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HomeMy WebLinkAboutTechnical Information Report STORMWATER DRAINAGE TECHNICAL REPORT FOR Cross Development Old Meridian Apartments 12865 Old Meridian St. Carmel, IN 46032 Prepared by: JPS Consulting Engineers 9365 Counselors Row Suite 116 Indianapolis, IN 46240 23 August 2022 Certified by: TABLE OF CONTENTS I.Foreword II.Site Location III.Existing Conditions IV.Storm Sewer Design V.Site Run-Off VI.Stormwater Detention VII.Stormwater Quality VIII.Summary Appendix A Vicinity & Location Map Appendix B Soil and Floodplain Map Appendix C Storm Sewer Calculations Appendix D Inlet Capacity Calculations Appendix E Site Runoff Calculations Appendix F BMP Sizing Calculations Appendix G Underground Detention Calculations Appendix H Underground Detention Calculations- 6” Orifice STORMWATER DRAINAGE TECHNICAL REPORT I. Foreword The proposed project consists of three new buildings. A new multi story multifamily and commercial mixed use building, a parking garage, and a multifamily building. All the buildings will be part of the same development. The project is located south of Main St on the east side of Old Meridian St. Construction will take place on a vacant lot that is currently undeveloped and wooded. The lot elevation drops off the further east away from the road. A new underground detention system will be constructed to control water quantity and a new structural BMP will serve as the stormwater quality measure. An additional BMP will be realized by employing extended detention time within the underground detention system. The volume of the underground detention basin has been increased from the minimum volume needed to meet the Carmel ordinance to allow for the extended detention time. Bentley PondPack was used for all hydrologic modeling for the overall site project run-off. Hydraflow Storm Sewers computer program was used to verify the capacity of the proposed storm sewers. All input and calculation reports are included in the various appendixes and discussed in more detail in the following sections. This report contains information on the stormwater management for the project including proposed stormwater conveyance/pipe design, stormwater quantity, and stormwater quality for the project. The proposed stormwater management is intended to meet the City of Carmel Stormwater Technical Standards Manual. II. Site Location The project is located 12865 Old Meridian St, south of Main Street. The project will clear the existing trees and plantings and construct two new buildings and a parking garage. The project site is bordered by Old Meridian St to the west, Carmel Middle School to the east, a commercial property to the north and a hotel to the south. Land use for the bordering parcels is summarized below: A site location and vicinity maps and a zoning map are included in Appendix A for reference. III. Existing Conditions The existing property is a currently undeveloped property with trees and vegetation. Existing drainage is to the southeast corner of the property. Due to the severe slope of the site to the southwest, the site surface drains off the property and into property that is owned by Carmel School. There is also stormwater flow that enters the site through a culvert that runs under Old Meridian St. This run-off leaves the Direction Land Use Carmel Zoning North BRU Carmel RE Commercial UC South Home2 Suites by Hilton Hotel UC West Avant Multifamily Development PUD East Carmel Middle School R-1 detention pond from the neighboring development. This run-off flows through the site and drains with the surface run-off to the southeast. Per the FEMA FIRM Map there are no special flood hazards present at this site. The existing soils on site are Urban land- Brookston complex, UbaA and Urban land– Crosby silt loam complex, UcfA & YclA. Soil and the FEMA FIRM flood map for the site are included in Appendix B. IV. Storm Sewer Design The storm sewer system for the new addition has been modeled for gravity flow with the Hydraflow Storm Sewers software using the Rational Method and a 10-year frequency design storm. The new storm system drains the roadway and fire lane that loops the new development and drains the roof drains of the new buildings and the courtyards and routes the run-off into the new underground detention basin. Runoff coefficients were determined by land use and adjusted to the next least pervious soil classification per Camel Stormwater Technical Standards Manual. The system has been modeled to the underground detention system. The off-site run-off that enters the site from the adjacent detention pond, will be piped around the development and dishcharged to grade south of our property line. This discharge point of the off-site water represents the location where the run-off leaves the site currently due to the natural topography of the site. The off-site storm system is separate from the storm system that is being installed to drain the new development and is not modeled and is not detained. Design storm values are per the Carmel Stormwater Technical Standards Manual. The storm sewer calculations are included in Appendix C. In addition, inlets have been sized to calculate the gutter spread to ensure that each existing inlet can accommodate the drainage watershed without being inundated. Per the Carmel Stormwater Technical Standards, each inlet was analyzed at 50% clogged. All of the inlets were able to handle the flows from their respective watersheds without flooding the roadway and allowing a 10ft travel lane. Inlet capacity calculations are included in Appendix D. V. Site Run-Off As a result of this project, run-off leaving the site will be increased. The limits of hard surface around the building are reduced and the building area is also reduced. The existing soil infiltrating groups are already at the lowest soil Hydrologic Group. Per the soils map, the existing soil hydrologic group values are as follows: Per the Carmel Stormwater Technical Standards Manual, the soil groups are to be changed to the next less infiltrating group for the purpose of determining the post construction run-off. Since the existing soils were in the D, hydrologic group, the soil properties for the D hydrologic group were used. The Soil Symbol Soil Name Soil Hydrologic Group Impervious Cn Value Pervious Cn Value UbaA Urban Land- Brookston complex D 98 80 UcfA & YclA Urban Land- Crosby Silt loam D 98 80 characteristics of the proposed soil is summarized in the following table: The pre and post construction run-off leaving the site and flowing into the drainage pond is summarized below: These values represent the run-off generated by the existing conditions and as a result of this project. The actual run-off will be significantly less as a stormwater detention facility will be constructed as part of the project. The Cn values were calculated using the following formula: 𝐶𝑁= (𝐶𝑁𝑖𝑚𝑜𝑒𝑟𝑢𝑖𝑜𝑢𝑟× 𝑖𝑙𝑜𝑒𝑟𝑟𝑖𝑜𝑟𝑟𝑎𝑟𝑒𝑎)× (𝐶𝑁𝑜𝑒𝑟𝑢𝑖𝑜𝑢𝑟× 𝑜𝑒𝑟𝑟𝑖𝑜𝑟𝑟𝑎𝑟𝑒𝑎) 𝑇𝑜𝑟𝑎𝑙 𝐴𝑟𝑒𝑎 For the pre developed condition the values was calculated as follows: 𝐶𝑁= (98 × 0.00)+(80 × 4.43) 4.43 =80 For the post- developed condition the values were calculated as follows: 𝐶𝑁= (98 × 4.21)+(80 × 0.22) 4.43 =97 Run-off calculations are provided in Appendix E. VI. Stormwater Detention Stormwater Detention will be provided by a new underground detention system. As was calculated in the previous section, this project is increasing the run-off leaving the site as a result of the development. Per the City of Carmel Stormwater Technical Standards Manual, the limiting flow rate for detention is determined by multiplying the project area by a factor based on the storm event. The calculation and allowable run-off rate for this project are summarized below along with the actual detained run-off rate: Soil Hydrologic Group Impervious Cn Value Pervious Cn Value Group D 98 80 Pervious Area Impervious Area Cn Value 2 Year Run-off 10 Year Run-off 100 Year Run-off Pre- Developed 4.43ac 0.0ac 80 1.62 cfs 2.53 cfs 3.69 cfs Post- Developed 0.22ac 4.21ac 97 17.22 cfs 25.30 cfs 35.11 cfs Storm Event Multiplication Factor per TSM Project Acreage Allowable Run-Off Rate Actual Detained Run-Off Rate 0-10yr 0.1cfs 4.43ac 0.44 cfs 0.44 cfs 11-100yr 0.3cfs 4.43ac 1.33 cfs 1.14 cfs Detention for the project is provided by StormTrap Single Trap underground detention system. The outlet control structure was designed with a 3” orifice to allow for staging in the detention system and to meet the required flow rate. Per Carmel standards, a 6” orifice will be constructed. The detention calculations are included in Appendix G. Calculations for the 6” orifice are included in Appendix H. VII. Stormwater Quality Post construction stormwater quality treatment for the site will be provided by quality measures installed with this project. Per the City of Carmel Stormwater Manual, two stormwater quality measures are required for this project. The first BMP will be a Contech Cascade Separator CS-8 unit which will be installed directly upstream of the underground detention basin. The secondary BMP will be extended detention time within the detention system. The water quality flow through structural BMP was calculated as outlined in Chapter 700 of the Carmel Stormwater Manual. The water quality flow rate is summarized below: The water quality curve number was determined using the Percent Impervious and Exhibit 701-1. Based on the Indianapolis Approved BMP list and maximum treatment flows, an Contech Cascade CS-8 BMP will be used. Refer to Appendix F for calculations on sizing the BMP. The Operation & Maintenance Manual for this new BMP will be provided under separate cover. VIII. Summary The Old Meridian Apartment project will include the construction of three new buildings, one mixed use building, one multifamily building, and one parking garage. The project will also construct a new underground stormwater detention basin and new BMP measures. All drainage for the project is designed per the City of Carmel Stormwater Technical Manual. The new storm sewers have been checked to verify they will convey the 10-year design storm run-off rates. Run-off from the site will decrease in the post developed condition due to the underground detention system. The run-off that currently enters the site from an adjacent detention pond will be routed around the site. The detention rates and BMP sizing and performances meet the Carmel requirements. Total Treatment Area Percent Impervious Water Quality Curve Number Water Quality Treatment Rate 4.48ac 95% 99 5.33cfs APPENDIX A: LOCATION & VICINITY MAPS LOCATION MAP PROJECT LOCATION VICINITY MAP NEW BUILDING W MAIN STREET EDWARD ROSE DEVELOPMENT ZONING: PUD LAND USE: OFFICE BUILDING ZONING:UC LAND USE: APARTMENTS OLD MERIDIAN STREETZONING: UC LAND USE: COMMERCIAL ZONING: R-1 LAND USE: CARMEL MIDDLE SCHOOL APPENDIX B: SOIL AND FLOODPLAIN MAPS Soil Map—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 11/15/2021 Page 1 of 3442531044253304425350442537044253904425410442543044254504425470442531044253304425350442537044253904425410442543044254504425470572710572730572750572770572790572810572830572850572870572890572910572930572950572970 572710 572730 572750 572770 572790 572810 572830 572850 572870 572890 572910 572930 572950 572970 39° 58' 34'' N 86° 8' 55'' W39° 58' 34'' N86° 8' 43'' W39° 58' 28'' N 86° 8' 55'' W39° 58' 28'' N 86° 8' 43'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 16N WGS84 0 50 100 200 300 Feet 0 15 30 60 90 Meters Map Scale: 1:1,270 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:15,800. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Hamilton County, Indiana Survey Area Data: Version 22, Sep 9, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 1, 2018—Sep 30, 2018 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Soil Map—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 11/15/2021 Page 2 of 3 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI UbaA Urban land-Brookston complex, 0 to 2 percent slopes 1.7 32.2% UcfA Urban land-Crosby silt loam complex, fine-loamy subsoil, 0 to 2 percent slopes 1.7 32.0% YclA Crosby silt loam, fine-loamy subsoil-Urban land complex, 0 to 2 percent slopes 1.9 35.8% Totals for Area of Interest 5.2 100.0% Soil Map—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 11/15/2021 Page 3 of 3 National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOOD HAZARD AREAS Without Base Flood Elevation (BFE) Zone A, V, A99 With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREEN Area of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 11/15/2021 at 2:40 PM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. 1:6,000 86°9'8"W 39°58'44"N 86°8'30"W 39°58'17"N Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020 APPENDIX C: STORM SEWER CALCULATIONS NO ENTRYADADADADADADSTR-1TOT-0.05acPER- 0.01acIMP- 0.04acSTR-2TOT-0.07acPER- 0.01acIMP- 0.06acSTR-3TOT-0.05acPER- 0.00acIMP- 0.05acSTR-4TOT-0.07acPER- 0.01acIMP- 0.06acSTR-5TOT-0.04acPER- 0.01acIMP- 0.03acSTR-6TOT- 0.05acPER- 0.02acIMP- 0.03acSTR-7TOT-0.05acPER- 0.03acIMP- 0.02acSTR-8TOT- 0.04acPER- 0.02acIMP- 0.02acSTR-9TOT-0.07acPER- 0.01acIMP- 0.06acSTR-10TOT- 0.05acPER- 0.03acIMP- 0.02acSTR-11TOT-0.07acPER- 0.03acIMP- 0.04acSTR-12TOT-0.07PER- 0.03acIMP- 0.04acSTR-22TOT-0.03acPER- 0.01acIMP- 0.02acSTR-21TOT-0.03acPER- 0.01acIMP- 0.02acSTR-20TOT-0.07acPER- 0.02acIMP- 0.05acSTR-19TOT-0.14acPER- 0.02acIMP- 0.12acSTR-18TOT-0.09acPER- 0.02acIMP- 0.07acSTR-17TOT-0.08acPER- 0.02acIMP- 0.06acSTR-16TOT-0.08acPER- 0.01acIMP- 0.07acSTR-15TOT-0.04acPER- 0.00acIMP- 0.04acSTR-13TOT- 0.03PER- 0.01acIMP- 0.02acCOURT-1TOT- 0.18acPER- 0.0acIMP- 0.18acROOF ATOT-1.12acPER- 0.0acIMP- 1.12acP-GARAGETOT-0.67acPER- 0.0acIMP- 0.67acCOURT-2TOT- 0.22acPER- 0.0acIMP- 0.16acROOF-BTOT-0.91acPER- 0.0acIMP- 0.91acSTR-23TOT-0.06acPER- 0.03acIMP- 0.03acSTR-24TOT-0.03acPER- 0.01acIMP- 0.02acAD-1TOT-0.02acPER-0.0acIMP- 0.02acAD-2TOT-0.01acPER- 0.0acIMP-0.01acAD-3TOT-0.01acPER- 0.0acIMP- 0.01acAD-4TOT-0.01acPER-0.0acIMP- 0.01acAD-5TOT-0.02acPER-0.0acIMP- 0.02acAD-6TOT- 0.04acPER- 0.01acIMP- 0.03acJPS Consulting Engineers - K:\Civil Projects\21JPSC79 Old Meridian Street Apartments\Drawings\basin map.dwg August 24, 2022 - 2:03 PM MCima STORM BASINMAPNO SCALECLMNBVNBVSTORMTAC SUBMITTAL17 NOV 202121JPSC79 APPENDIX D: INLET CAPACITY CALCULATIONS Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.76 I =6.12 in/hr T.C. =5.0 min A =0.05 ac 0.2 Actual Inlet Flow = 0.2 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.80 I =6.12 in/hr T.C. =5.0 min A =0.07 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3405 Perimeter (ft):7.90 Open Area (sf):1.50 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((2.6+4.6)/2) x .80 = 2.6 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =2.6 cfs allowable Qi =Use Orifice Flow Equation 2.6 2.6 4.60 Allowable Inlet Flow = 2.6 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.90 I =6.12 in/hr T.C. =5.0 min A =0.05 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3405 Perimeter (ft):7.90 Open Area (sf):1.50 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((2.6+4.6)/2) x .80 = 2.6 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =2.6 cfs allowable Qi =Use Orifice Flow Equation 2.6 2.6 4.60 Allowable Inlet Flow = 2.6 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.80 I =6.12 in/hr T.C. =5.0 min A =0.07 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3405 Perimeter (ft):7.90 Open Area (sf):1.50 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((2.6+4.6)/2) x .80 = 2.6 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =2.6 cfs allowable Qi =Use Orifice Flow Equation 2.6 2.6 4.60 Allowable Inlet Flow = 2.6 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.72 I =6.12 in/hr T.C. =5.0 min A =0.04 ac 0.2 Actual Inlet Flow = 0.2 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3405 Perimeter (ft):7.90 Open Area (sf):1.50 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((2.6+4.6)/2) x .80 = 2.6 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =2.6 cfs allowable Qi =Use Orifice Flow Equation 2.6 2.6 4.60 Allowable Inlet Flow = 2.6 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.62 I =6.12 in/hr T.C. =5.0 min A =0.05 ac 0.2 Actual Inlet Flow = 0.2 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3405 Perimeter (ft):7.90 Open Area (sf):1.50 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((2.6+4.6)/2) x .80 = 2.6 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =2.6 cfs allowable Qi =Use Orifice Flow Equation 2.6 2.6 4.60 Allowable Inlet Flow = 2.6 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.48 I =6.12 in/hr T.C. =5.0 min A =0.05 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.55 I =6.12 in/hr T.C. =5.0 min A =0.04 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-d Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.80 I =6.12 in/hr T.C. =5.0 min A =0.07 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-d Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.48 I =6.12 in/hr T.C. =5.0 min A =0.05 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.60 I =6.12 in/hr T.C. =5.0 min A =0.07 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.60 I =6.12 in/hr T.C. =5.0 min A =0.07 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.67 I =6.12 in/hr T.C. =5.0 min A =0.03 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.90 I =6.12 in/hr T.C. =5.0 min A =0.04 ac 0.2 Actual Inlet Flow = 0.2 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.81 I =6.12 in/hr T.C. =5.0 min A =0.08 ac 0.4 Actual Inlet Flow = 0.4 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.72 I =6.12 in/hr T.C. =5.0 min A =0.08 ac 0.4 Actual Inlet Flow = 0.4 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.74 I =6.12 in/hr T.C. =5.0 min A =0.09 ac 0.4 Actual Inlet Flow = 0.4 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:3286-8 Perimeter (ft):4.40 Open Area (sf):0.70 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.2+2.6)/2) x .80 = 1.2 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.2 cfs allowable Qi =Use Orifice Flow Equation 1.2 1.2 2.60 Allowable Inlet Flow = 1.2 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.80 I =6.12 in/hr T.C. =5.0 min A =0.14 ac 0.7 Actual Inlet Flow = 0.7 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.70 I =6.12 in/hr T.C. =5.0 min A =0.07 ac 0.3 Actual Inlet Flow = 0.3 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.67 I =6.12 in/hr T.C. =5.0 min A =0.03 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.67 I =6.12 in/hr T.C. =5.0 min A =0.03 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.55 I =6.12 in/hr T.C. =5.0 min A =0.06 ac 0.2 Actual Inlet Flow = 0.2 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 Project Name:Structure: Job Number:21JPSC79 Date: Design Depth of Water Over Grate (ft.):0.50 % Plugged:50%0.50 Casting:2560-D Perimeter (ft):5.10 Open Area (sf):1.00 Solve For Qi Allowable: Note: Formulas Obtained From Neenah Foundry Company Inlet Capacity Worksheets Transitional Flow Eqn: Qi = ((QOrifice + QWeir)/2) x .80 = ((1.7+3)/2) x .80 = 1.7 cfs Orifice Flow Eqn:Weir Flow Eqn: Qi =[( 0.6)(A)(Pp)] x [(2)(g)(h)]1/2 Qi =3.3(P)(Pp)(dw)1.5 Where:Where: Qi = Inlet Capacity (CFS)Qi = Inlet Capacity (CFS) A = Fee open area of grate (sf)P = Perimeter of Grate Opening (ft) g = 32.2 (ft per sec/sec)dw = Depth Of Water Above Grate h = Head (ft) (Water Depth)Pp = Percent Plugged Pp = Percent Plugged Qi =1.7 cfs allowable Qi =Use Orifice Flow Equation 1.7 1.7 3.00 Allowable Inlet Flow = 1.7 cfs Solve For Q Actual: Rational Formula:Q10 = C x I x A Where: Q10 = Flow from 10 year storm event C = Runoff Coefficient (unitless) I = Rainfall intensity (in/hr) A = Watershed area (ac) C =0.67 I =6.12 in/hr T.C. =5.0 min A =0.03 ac 0.1 Actual Inlet Flow = 0.1 cfs Q Comparison Result:Casting Is Sufficient Note: At this depth, transitional flow is anticipated. The allowable inlet flow shown is 80% of the average of the weir and orifice flow due to vortex action. This adjustment value obtained from Neenah Foundry technical division. Discharge vs. Depth on Grate Calculation For Inlets In Sag Conditions Old Meridian Apartments STR-1 23-Aug-22 APPENDIX E: SITE RUNOFF CALCULATIONS JPS Consulting Engineers - K:\Civil Projects\21JPSC79 Old Meridian Street Apartments\Drawings\basin map.dwg June 17, 2022 - 4:19 PM Nvergatos PRE DEVELOPEDBASIN MAPNO SCALECLMNBVNBVPRETECHNICALINFORMATIONREPORT23 AUG 202221JPSC79TOTAL- 4.43acIMP- 0acPER- 4.43acC-VALUE- 0.20 NO ENTRYBUILDING AFFE: 861.45BUILDING BFFE: 856.45PARKING GARAGEFFE: 861.45LOWER FFE: 856.45ADADADADADADJPS Consulting Engineers - K:\Civil Projects\21JPSC79 Old Meridian Street Apartments\Drawings\basin map.dwg June 17, 2022 - 4:19 PM Nvergatos POST DEVELOPEDBASIN MAPNO SCALECLMNBVNBVPOSTTECHNICALINFORMATIONREPORT23 AUG 202221JPSC79TOTAL- 4.43acIMP- 4.21acPER- 0.22acC-VALUE- 0.82 EXISTING CONDITIONS: Old Meridian Apartments Using Rational Method, Q=CiA Basin Area, A (ac) = 4.43 Land Use Area x Coefficient =CA Pavement 0.00 0.85 0.00 Grass 4.43 0.20 0.89 Roof 0.00 0.90 0.00 4.430 acres Cavg =0.20 Time of Concentration, T Overland Flow n = 0.8 L (ft) = 100 S (ft/ft) = 0.040 Tt =31.14 minutes 9 0.8 Shallow Concentrated Flow S (ft/ft) =0.030 1 V (fps) = 16.1315 x S^0.5 = 2.79 2.79 L (ft) =494 Tt =2.95 Ttotal =34.09 minutes IDF Equation Values a b N 2yr 32.852 7 0.778 i2y =1.82 10yr 56.974 9 0.7953 i10yr =2.86 100yr 92.718 11 0.8145 i100yr =4.17 Q=CiA C I A Q Q2yr =0.20 1.82 4.43 1.62 cfs Q10yr =0.20 2.86 4.43 2.53 cfs Q100yr =0.20 4.17 4.43 3.69 cfs Runoff, Q Runoff Coefficient, C Rainfall Intensity, I (in/hr) x x x 60xS )nL(0043.0T 4.0 8.0 t = V60 LTt= N)bt( ai+= = = = x x x x =x Surface Type Unpaved Paved PROPOSED CONDITIONS: Old Meridian Apartments Using Rational Method, Q=CiA Basin Area, A (ac) = 4.43 Land Use Area x Coefficient =CA Pavement 4.21 0.85 3.58 Grass 0.22 0.20 0.04 Roof 0.00 0.90 0.00 4.430 acres Cavg =0.82 Time of Concentration, T Overland Flow n = 0.011 L (ft) = 25 S (ft/ft) = 0.015 Tt =0.49 minutes 1 0.011 Shallow Concentrated Flow S (ft/ft) = 2 0 L (ft) = Tt =0.00 Ttotal =5.00 minutes IDF Equation Values a b N 2yr 32.852 7 0.778 i2y =4.75 10yr 56.974 9 0.7953 i10yr =6.98 100yr 92.718 11 0.8145 i100yr =9.69 Q=CiA C I A Q Q2yr =0.82 4.75 4.43 17.22 cfs Q10yr =0.82 6.98 4.43 25.30 cfs Q100yr =0.82 9.69 4.43 35.11 cfs Change in Runoff Increasing or Qpre - Qpost = Decreasing Runoff? Q2yr =17.22 1.62 15.60 cfs Increasing Q10yr =25.30 2.53 22.77 cfs Increasing Q100yr =35.11 3.69 31.42 cfs Increasing 013390.00 Runoff, Q Runoff Coefficient, C Rainfall Intensity, I (in/hr) 60xS )nL(0043.0T 4.0 8.0 t = V60 LTt= x x x = = = x x x x =x - - - = = = V60 LTt= Unpaved Paved N)bt( ai+= APPENDIX F: BMP SIZING CALCULATIONS NO ENTRYADADADADADADJPS Consulting Engineers - K:\Civil Projects\21JPSC79 Old Meridian Street Apartments\Drawings\basin map.dwg June 17, 2022 - 4:19 PM Nvergatos BMP BASINMAPNO SCALECLMNBVNBVBMPTAC SUBMITTAL17 NOV 202121JPSC79BMP BASINTOTAL- 4.43acIMP- 4.21acPER- 0.22acWQ CN-VALUE- 99 Table of Contents 7Addition Summary, 10 years (BMP Calc)BMP Flow 4Unit Hydrograph (Hydrograph Table), 10 years (BMP Calc) 2Unit Hydrograph Summary, 10 years (BMP Calc) BMP Basin 1Master Network Summary Old Meridian Apartments Subsection: Master Network Summary Catchments Summary Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel 5.5211.9000.32810BMP CalcBMP Basin Node Summary Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel 5.5211.9000.32810BMP CalcBMP Flow Page 1 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: BMP Calc Storm Event: BMP StormLabel: BMP Basin Return Event: 10 yearsSubsection: Unit Hydrograph Summary BMP StormStorm Event years10Return Event hours24.000Duration in1.0Depth hours0.083Time of Concentration (Composite) acres4.430Area (User Defined) hours0.011Computational Time Increment hours11.922Time to Peak (Computed) ft³/s5.62Flow (Peak, Computed) hours0.050Output Increment hours11.900Time to Flow (Peak Interpolated Output) ft³/s5.52Flow (Peak Interpolated Output) Drainage Area 99.000SCS CN (Composite) acres4.430Area (User Defined) in0.1Maximum Retention (Pervious) in0.0Maximum Retention (Pervious, 20 percent) Cumulative Runoff in0.9Cumulative Runoff Depth (Pervious) ac-ft0.328Runoff Volume (Pervious) Hydrograph Volume (Area under Hydrograph curve) ac-ft0.328Volume SCS Unit Hydrograph Parameters hours0.083Time of Concentration (Composite) hours0.011Computational Time Increment 483.432Unit Hydrograph Shape Factor 0.749K Factor 1.670Receding/Rising, Tr/Tp Page 2 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: BMP Calc Storm Event: BMP StormLabel: BMP Basin Return Event: 10 yearsSubsection: Unit Hydrograph Summary SCS Unit Hydrograph Parameters ft³/s60.23Unit peak, qp hours0.056Unit peak time, Tp hours0.222Unit receding limb, Tr hours0.278Total unit time, Tb Page 3 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: BMP Calc Storm Event: BMP StormLabel: BMP Basin Return Event: 10 yearsSubsection: Unit Hydrograph (Hydrograph Table) BMP StormStorm Event years10Return Event hours24.000Duration in1.0Depth hours0.083Time of Concentration (Composite) acres4.430Area (User Defined) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.950 0.010.010.000.000.002.200 0.010.010.010.010.012.450 0.010.010.010.010.012.700 0.010.010.010.010.012.950 0.020.020.020.020.013.200 0.020.020.020.020.023.450 0.020.020.020.020.023.700 0.030.020.020.020.023.950 0.030.030.030.030.034.200 0.030.030.030.030.034.450 0.030.030.030.030.034.700 0.040.040.040.040.034.950 0.040.040.040.040.045.200 0.040.040.040.040.045.450 0.050.050.050.040.045.700 0.050.050.050.050.055.950 0.050.050.050.050.056.200 0.060.060.050.050.056.450 0.060.060.060.060.066.700 0.060.060.060.060.066.950 0.070.060.060.060.067.200 0.070.070.070.070.077.450 0.070.070.070.070.077.700 0.080.070.070.070.077.950 0.090.080.080.080.088.200 0.100.090.090.090.098.450 0.110.110.100.100.108.700 0.120.110.110.110.118.950 0.120.120.120.120.129.200 0.120.120.120.120.129.450 0.140.140.130.130.139.700 0.160.160.150.150.149.950 Page 4 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: BMP Calc Storm Event: BMP StormLabel: BMP Basin Return Event: 10 yearsSubsection: Unit Hydrograph (Hydrograph Table) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.190.180.180.170.1710.200 0.220.210.200.200.1910.450 0.260.250.240.230.2310.700 0.320.300.290.280.2710.950 0.430.400.380.360.3411.200 1.340.910.660.470.4511.450 5.524.213.062.431.8411.700 0.911.352.984.415.1811.950 0.550.600.650.700.7712.200 0.360.380.410.450.5012.450 0.310.320.330.340.3512.700 0.260.270.270.280.3012.950 0.230.230.240.250.2513.200 0.200.200.210.220.2213.450 0.180.180.190.190.2013.700 0.160.160.170.170.1713.950 0.150.150.160.160.1614.200 0.150.150.150.150.1514.450 0.140.140.140.140.1414.700 0.130.130.130.130.1414.950 0.120.120.130.130.1315.200 0.110.120.120.120.1215.450 0.110.110.110.110.1115.700 0.100.100.100.100.1115.950 0.100.100.100.100.1016.200 0.100.100.100.100.1016.450 0.090.090.090.090.0916.700 0.090.090.090.090.0916.950 0.090.090.090.090.0917.200 0.080.080.090.090.0917.450 0.080.080.080.080.0817.700 0.080.080.080.080.0817.950 0.080.080.080.080.0818.200 0.070.070.070.070.0818.450 0.070.070.070.070.0718.700 0.070.070.070.070.0718.950 0.060.070.070.070.0719.200 0.060.060.060.060.0619.450 0.060.060.060.060.0619.700 0.060.060.060.060.0619.950 0.060.060.060.060.0620.200 0.060.060.060.060.0620.450 Page 5 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: BMP Calc Storm Event: BMP StormLabel: BMP Basin Return Event: 10 yearsSubsection: Unit Hydrograph (Hydrograph Table) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.060.060.060.060.0620.700 0.060.060.060.060.0620.950 0.050.050.050.050.0521.200 0.050.050.050.050.0521.450 0.050.050.050.050.0521.700 0.050.050.050.050.0521.950 0.050.050.050.050.0522.200 0.050.050.050.050.0522.450 0.050.050.050.050.0522.700 0.050.050.050.050.0522.950 0.050.050.050.050.0523.200 0.050.050.050.050.0523.450 0.050.050.050.050.0523.700 (N/A)(N/A)(N/A)0.050.0523.950 Page 6 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: BMP Calc Storm Event: BMP StormLabel: BMP Flow Return Event: 10 yearsSubsection: Addition Summary Summary for Hydrograph Addition at 'BMP Flow' Upstream NodeUpstream Link BMP Basin<Catchment to Outflow Node> Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 5.5211.9000.328BMP BasinFlow (From) 5.5211.9000.328BMP FlowFlow (In) Page 7 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Index Master Network Summary...1 M BMP Flow (Addition Summary, 10 years (BMP Calc))...7 BMP Basin (Unit Hydrograph Summary, 10 years (BMP Calc))...2, 3 BMP Basin (Unit Hydrograph (Hydrograph Table), 10 years (BMP Calc))...4, 5, 6 B Page 8 of 827 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/15/2021 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Pg. 2 04/27/2021 Version 19 Manufactured SQU SQU System Model Max Treatment Flow (cfs) Max 10-yr On-Line Flow Rate (cfs) Cleanout Depth (Inches) 7-ft 4.60 9.94 9 8-ft 6.00 12.96 9 HS-3 0.50 1.00 6 HS-4 0.88 1.76 6 HS-5 1.37 2.74 6 HS-6 1.98 3.96 6 HS-7 2.69 5.38 6 HS-8 3.52 7.04 6 HS-9 4.45 8.9 6 HS-10 5.49 10.98 6 HS-11 6.65 13.3 6 HydroStorm by Hydroworks, LLC HS-12 7.91 15.82 6 XC-2 0.57 1.16 6 XC-3 1.13 2.30 6 XC-4 1.86 3.79 6 XC-5 2.78 5.66 6 XC-6 3.88 7.90 6 XC-7 5.17 10.52 6 XC-8 6.64 13.51 6 XC-9 8.29 16.87 6 XC-10 10.13 20.62 6 XC-11 12.15 24.73 6 XC-12 14.35 29.20 6 AquaShield Aqua-Swirl Xcelerator1 XC-13 15.53 31.60 6 CS-3 1.02 2.27 9 CS-4 1.80 4.03 9 CS-5 2.81 6.29 9 CS-6 4.05 9.07 9 CS-8 7.20 16.1 9 CS-10 11.3 25.3 9 Contech Cascade Separator CS-12 16.2 36.3 9 APPENDIX G: UNDERGROUND DETENTION CALCULATIONS 69Pond Inflow Summary, 100 years (Post-Development 100 year) 68Pond Inflow Summary, 10 years (Post-Development 10 year) PO-1 (IN) 65Pond Routed Hydrograph (total out), 100 years (Post- Development 100 year) 62Pond Routed Hydrograph (total out), 10 years (Post- Development 10 year) PO-1 (OUT) 61Level Pool Pond Routing Summary, 100 years (Post- Development 100 year) 60Level Pool Pond Routing Summary, 10 years (Post- Development 10 year) PO-1 (IN) 59Elevation-Volume-Flow Table (Pond), 100 years (Post- Development 100 year) 58Elevation-Volume-Flow Table (Pond), 10 years (Post- Development 10 year) PO-1 55Diverted Hydrograph, 100 years (Post-Development 100 year) 52Diverted Hydrograph, 10 years (Post-Development 10 year) Outlet-2 50Composite Rating Curve, 100 years (Post-Development 100 year) 41Individual Outlet Curves, 100 years (Post-Development 100 year) 37Outlet Input Data, 100 years (Post-Development 100 year) 35Composite Rating Curve, 10 years (Post-Development 10 year) 26Individual Outlet Curves, 10 years (Post-Development 10 year) 22Outlet Input Data, 10 years (Post-Development 10 year) Composite Outlet Structure - 1 21Elevation-Area Volume Curve, 100 years (Post-Development 100 year) 20Elevation-Area Volume Curve, 10 years (Post-Development 10 year) PO-1 17Time vs. Volume, 100 years (Post-Development 100 year) 14Time vs. Volume, 10 years (Post-Development 10 year) PO-1 11Time vs. Elevation, 100 years (Post-Development 100 year) 8Time vs. Elevation, 10 years (Post-Development 10 year) PO-1 (OUT) 7Addition Summary, 100 years (Post-Development 100 year) 6Addition Summary, 10 years (Post-Development 10 year) O-3 4Unit Hydrograph Summary, 100 years (Post-Development 100 year) 2Unit Hydrograph Summary, 10 years (Post-Development 10 year) CM-1 1Master Network Summary Table of Contents Table of Contents 69Pond Inflow Summary, 100 years (Post-Development 100 year) 68Pond Inflow Summary, 10 years (Post-Development 10 year) PO-1 (IN) 65Pond Routed Hydrograph (total out), 100 years (Post- Development 100 year) 62Pond Routed Hydrograph (total out), 10 years (Post- Development 10 year) PO-1 (OUT) 61Level Pool Pond Routing Summary, 100 years (Post- Development 100 year) 60Level Pool Pond Routing Summary, 10 years (Post- Development 10 year) PO-1 (IN) 59Elevation-Volume-Flow Table (Pond), 100 years (Post- Development 100 year) 58Elevation-Volume-Flow Table (Pond), 10 years (Post-Development 10 year)PO-1 55Diverted Hydrograph, 100 years (Post-Development 100 year)52Diverted Hydrograph, 10 years (Post-Development 10 year)Outlet-2 50Composite Rating Curve, 100 years (Post-Development 100year)41Individual Outlet Curves, 100 years (Post-Development 100year)37Outlet Input Data, 100 years (Post-Development 100 year)35Composite Rating Curve, 10 years (Post-Development 10 year)26Individual Outlet Curves, 10 years (Post-Development 10 year)22Outlet Input Data, 10 years (Post-Development 10 year)Composite Outlet Structure - 1 21Elevation-Area Volume Curve, 100 years (Post-Development100 year)20Elevation-Area Volume Curve, 10 years (Post-Development 10year)PO-1 17Time vs. Volume, 100 years (Post-Development 100 year)14Time vs. Volume, 10 years (Post-Development 10 year)PO-1 11Time vs. Elevation, 100 years (Post-Development 100 year)8Time vs. Elevation, 10 years (Post-Development 10 year)PO-1 (OUT)7Addition Summary, 100 years (Post-Development 100 year)6Addition Summary, 10 years (Post-Development 10 year)O-3 4Unit Hydrograph Summary, 100 years (Post-Development 100year)2Unit Hydrograph Summary, 10 years (Post-Development 10year)CM-1 1Master Network Summary Old Meridian Apartments Subsection: Master Network Summary Catchments Summary Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel 14.5511.9000.8562Post-Development 2 year CM-1 21.3711.9001.28510Post-Development 10 year CM-1 36.5411.9002.251100Post-Development 100 year CM-1 Node Summary Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel 0.3515.0500.3742Post-Development 2 year O-3 0.4415.6500.48910Post-Development 10 year O-3 1.1413.9500.912100Post-Development 100 year O-3 Pond Summary Maximum Pond Storage (ac-ft) Maximum Water Surface Elevation (ft) Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel (N/A)(N/A)14.5511.9000.8562Post- Development 2 year PO-1 (IN) 0.589849.040.3515.0500.3742Post- Development 2 year PO-1 (OUT) (N/A)(N/A)21.3711.9001.28510Post- Development 10 year PO-1 (IN) 0.909850.310.4415.6500.48910Post- Development 10 year PO-1 (OUT) (N/A)(N/A)36.5411.9002.251100Post- Development 100 year PO-1 (IN) 1.546852.831.1413.9500.912100Post- Development 100 year PO-1 (OUT) Page 1 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: CM-1 Return Event: 10 yearsSubsection: Unit Hydrograph Summary 10 year stormStorm Event years10Return Event hours24.000Duration in3.8Depth hours0.083Time of Concentration (Composite) acres4.430Area (User Defined) hours0.011Computational Time Increment hours11.922Time to Peak (Computed) ft³/s21.74Flow (Peak, Computed) hours0.050Output Increment hours11.900Time to Flow (Peak Interpolated Output) ft³/s21.37Flow (Peak Interpolated Output) Drainage Area 97.000SCS CN (Composite) acres4.430Area (User Defined) in0.3Maximum Retention (Pervious) in0.1Maximum Retention (Pervious, 20 percent) Cumulative Runoff in3.5Cumulative Runoff Depth (Pervious) ac-ft1.286Runoff Volume (Pervious) Hydrograph Volume (Area under Hydrograph curve) ac-ft1.285Volume SCS Unit Hydrograph Parameters hours0.083Time of Concentration (Composite) hours0.011Computational Time Increment 483.432Unit Hydrograph Shape Factor 0.749K Factor 1.670Receding/Rising, Tr/Tp Page 2 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: CM-1 Return Event: 10 yearsSubsection: Unit Hydrograph Summary SCS Unit Hydrograph Parameters ft³/s60.23Unit peak, qp hours0.056Unit peak time, Tp hours0.222Unit receding limb, Tr hours0.278Total unit time, Tb Page 3 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: CM-1 Return Event: 100 yearsSubsection: Unit Hydrograph Summary 100 year stormStorm Event years100Return Event hours24.000Duration in6.5Depth hours0.083Time of Concentration (Composite) acres4.430Area (User Defined) hours0.011Computational Time Increment hours11.922Time to Peak (Computed) ft³/s37.13Flow (Peak, Computed) hours0.050Output Increment hours11.900Time to Flow (Peak Interpolated Output) ft³/s36.54Flow (Peak Interpolated Output) Drainage Area 97.000SCS CN (Composite) acres4.430Area (User Defined) in0.3Maximum Retention (Pervious) in0.1Maximum Retention (Pervious, 20 percent) Cumulative Runoff in6.1Cumulative Runoff Depth (Pervious) ac-ft2.253Runoff Volume (Pervious) Hydrograph Volume (Area under Hydrograph curve) ac-ft2.251Volume SCS Unit Hydrograph Parameters hours0.083Time of Concentration (Composite) hours0.011Computational Time Increment 483.432Unit Hydrograph Shape Factor 0.749K Factor 1.670Receding/Rising, Tr/Tp Page 4 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: CM-1 Return Event: 100 yearsSubsection: Unit Hydrograph Summary SCS Unit Hydrograph Parameters ft³/s60.23Unit peak, qp hours0.056Unit peak time, Tp hours0.222Unit receding limb, Tr hours0.278Total unit time, Tb Page 5 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: O-3 Return Event: 10 yearsSubsection: Addition Summary Summary for Hydrograph Addition at 'O-3' Upstream NodeUpstream Link PO-1Outlet-2 Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 0.4415.6500.489Outlet-2Flow (From) 0.4415.6500.489O-3Flow (In) Page 6 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: O-3 Return Event: 100 yearsSubsection: Addition Summary Summary for Hydrograph Addition at 'O-3' Upstream NodeUpstream Link PO-1Outlet-2 Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 1.1413.9500.912Outlet-2Flow (From) 1.1413.9500.912O-3Flow (In) Page 7 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 846.70846.70846.70846.70846.700.000 846.70846.70846.70846.70846.700.250 846.70846.70846.70846.70846.700.500 846.70846.70846.70846.70846.700.750 846.70846.70846.70846.70846.701.000 846.70846.70846.70846.70846.701.250 846.70846.70846.70846.70846.701.500 846.70846.70846.70846.70846.701.750 846.70846.70846.70846.70846.702.000 846.71846.71846.71846.70846.702.250 846.71846.71846.71846.71846.712.500 846.72846.71846.71846.71846.712.750 846.72846.72846.72846.72846.723.000 846.73846.73846.73846.72846.723.250 846.73846.73846.73846.73846.733.500 846.74846.74846.74846.74846.743.750 846.75846.75846.75846.75846.744.000 846.76846.76846.76846.75846.754.250 846.77846.77846.77846.76846.764.500 846.78846.78846.78846.77846.774.750 846.79846.79846.79846.79846.785.000 846.80846.80846.80846.80846.805.250 846.82846.82846.81846.81846.815.500 846.83846.83846.83846.82846.825.750 846.85846.84846.84846.84846.836.000 846.86846.86846.85846.85846.856.250 846.88846.87846.87846.87846.866.500 846.89846.89846.88846.88846.886.750 846.91846.90846.90846.90846.897.000 846.93846.92846.92846.91846.917.250 846.94846.94846.94846.93846.937.500 846.96846.96846.95846.95846.957.750 846.98846.98846.97846.97846.968.000 847.00847.00846.99846.99846.988.250 847.03847.02847.02847.01847.018.500 847.05847.05847.04847.04847.038.750 847.08847.08847.07847.06847.069.000 847.11847.11847.10847.09847.099.250 847.14847.14847.13847.12847.129.500 847.18847.17847.16847.15847.159.750 Page 8 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 847.21847.21847.20847.19847.1810.000 847.26847.25847.24847.23847.2210.250 847.32847.30847.29847.28847.2710.500 847.38847.37847.35847.34847.3310.750 847.46847.45847.43847.41847.4011.000 847.58847.55847.53847.51847.4811.250 847.85847.75847.68847.64847.6011.500 849.02848.68848.38848.15847.9811.750 849.78849.74849.67849.54849.3212.000 849.95849.92849.89849.86849.8212.250 850.04850.03850.01849.99849.9712.500 850.11850.10850.08850.07850.0612.750 850.16850.15850.14850.13850.1213.000 850.20850.19850.18850.18850.1713.250 850.23850.22850.22850.21850.2113.500 850.25850.25850.24850.24850.2313.750 850.27850.26850.26850.26850.2514.000 850.28850.28850.28850.27850.2714.250 850.29850.29850.29850.28850.2814.500 850.30850.30850.30850.29850.2914.750 850.30850.30850.30850.30850.3015.000 850.31850.31850.31850.31850.3115.250 850.31850.31850.31850.31850.3115.500 850.31850.31850.31850.31850.3115.750 850.30850.30850.30850.31850.3116.000 850.30850.30850.30850.30850.3016.250 850.29850.29850.29850.30850.3016.500 850.29850.29850.29850.29850.2916.750 850.28850.28850.28850.28850.2817.000 850.27850.27850.27850.27850.2817.250 850.26850.26850.26850.27850.2717.500 850.25850.25850.25850.26850.2617.750 850.24850.24850.24850.25850.2518.000 850.23850.23850.23850.23850.2418.250 850.22850.22850.22850.22850.2318.500 850.20850.21850.21850.21850.2118.750 850.19850.19850.19850.20850.2019.000 850.17850.18850.18850.18850.1919.250 850.16850.16850.16850.17850.1719.500 850.14850.14850.15850.15850.1519.750 850.12850.13850.13850.13850.1420.000 Page 9 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 850.11850.11850.11850.12850.1220.250 850.09850.09850.10850.10850.1020.500 850.07850.08850.08850.08850.0920.750 850.06850.06850.06850.07850.0721.000 850.04850.04850.04850.05850.0521.250 850.02850.02850.03850.03850.0321.500 850.00850.01850.01850.01850.0221.750 849.98849.99849.99850.00850.0022.000 849.97849.97849.97849.98849.9822.250 849.95849.95849.96849.96849.9622.500 849.93849.93849.94849.94849.9522.750 849.91849.92849.92849.92849.9323.000 849.90849.90849.90849.91849.9123.250 849.88849.88849.88849.89849.8923.500 849.86849.86849.87849.87849.8723.750 (N/A)(N/A)(N/A)(N/A)849.8624.000 Page 10 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 846.70846.70846.70846.70846.700.000 846.70846.70846.70846.70846.700.250 846.70846.70846.70846.70846.700.500 846.70846.70846.70846.70846.700.750 846.70846.70846.70846.70846.701.000 846.70846.70846.70846.70846.701.250 846.71846.71846.71846.71846.711.500 846.72846.72846.72846.71846.711.750 846.73846.73846.72846.72846.722.000 846.74846.74846.74846.73846.732.250 846.75846.75846.75846.75846.742.500 846.77846.77846.76846.76846.762.750 846.78846.78846.78846.77846.773.000 846.80846.80846.79846.79846.793.250 846.82846.82846.81846.81846.803.500 846.84846.83846.83846.83846.823.750 846.86846.85846.85846.84846.844.000 846.88846.87846.87846.86846.864.250 846.90846.89846.89846.89846.884.500 846.92846.92846.91846.91846.904.750 846.95846.94846.94846.93846.935.000 846.97846.97846.96846.96846.955.250 847.00846.99846.99846.98846.985.500 847.02847.02847.01847.01847.005.750 847.05847.05847.04847.03847.036.000 847.08847.07847.07847.06847.066.250 847.11847.10847.10847.09847.096.500 847.14847.13847.13847.12847.126.750 847.17847.16847.16847.15847.157.000 847.20847.20847.19847.18847.187.250 847.23847.23847.22847.21847.217.500 847.27847.26847.25847.25847.247.750 847.30847.30847.29847.28847.278.000 847.34847.33847.33847.32847.318.250 847.39847.38847.37847.36847.358.500 847.44847.43847.42847.41847.408.750 847.49847.48847.47847.46847.459.000 847.55847.54847.53847.52847.509.250 847.60847.59847.58847.57847.569.500 847.67847.66847.64847.63847.629.750 Page 11 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 847.74847.73847.71847.70847.6810.000 847.83847.81847.79847.77847.7610.250 847.93847.91847.89847.87847.8510.500 848.05848.02848.00847.97847.9510.750 848.20848.17848.13848.11848.0811.000 848.40848.35848.31848.27848.2311.250 848.88848.71848.59848.50848.4511.500 850.89850.32849.80849.41849.1111.750 852.21852.13852.01851.79851.4012.000 852.49852.44852.39852.34852.2812.250 852.63852.61852.58852.55852.5212.500 852.72852.70852.69852.67852.6512.750 852.78852.77852.76852.74852.7313.000 852.81852.80852.80852.79852.7813.250 852.83852.83852.82852.82852.8213.500 852.83852.83852.83852.83852.8313.750 852.83852.83852.83852.83852.8314.000 852.82852.82852.82852.82852.8314.250 852.80852.81852.81852.81852.8214.500 852.79852.79852.79852.80852.8014.750 852.77852.77852.78852.78852.7815.000 852.74852.75852.75852.76852.7615.250 852.72852.72852.73852.74852.7415.500 852.69852.70852.70852.71852.7115.750 852.66852.67852.67852.68852.6916.000 852.63852.64852.65852.65852.6616.250 852.61852.61852.62852.62852.6316.500 852.58852.58852.59852.60852.6016.750 852.55852.56852.56852.57852.5717.000 852.53852.53852.54852.54852.5517.250 852.50852.51852.51852.52852.5217.500 852.48852.48852.49852.49852.5017.750 852.45852.46852.46852.47852.4718.000 852.43852.43852.44852.44852.4518.250 852.41852.41852.42852.42852.4218.500 852.38852.39852.39852.40852.4018.750 852.36852.37852.37852.37852.3819.000 852.34852.34852.35852.35852.3619.250 852.32852.32852.33852.33852.3319.500 852.30852.30852.30852.31852.3119.750 852.27852.28852.28852.29852.2920.000 Page 12 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 852.25852.26852.26852.27852.2720.250 852.24852.24852.24852.25852.2520.500 852.22852.22852.23852.23852.2320.750 852.20852.21852.21852.21852.2221.000 852.19852.19852.19852.20852.2021.250 852.17852.17852.18852.18852.1821.500 852.15852.16852.16852.16852.1721.750 852.14852.14852.15852.15852.1522.000 852.12852.13852.13852.13852.1422.250 852.11852.11852.11852.12852.1222.500 852.09852.09852.09852.10852.1022.750 852.07852.07852.08852.08852.0823.000 852.05852.06852.06852.06852.0723.250 852.04852.04852.04852.05852.0523.500 852.02852.02852.02852.03852.0323.750 (N/A)(N/A)(N/A)(N/A)852.0124.000 Page 13 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.0000.0000.0000.0000.0000.000 0.0000.0000.0000.0000.0000.250 0.0000.0000.0000.0000.0000.500 0.0000.0000.0000.0000.0000.750 0.0000.0000.0000.0000.0001.000 0.0000.0000.0000.0000.0001.250 0.0000.0000.0000.0000.0001.500 0.0000.0000.0000.0000.0001.750 0.0010.0010.0010.0010.0002.000 0.0020.0010.0010.0010.0012.250 0.0030.0020.0020.0020.0022.500 0.0040.0040.0030.0030.0032.750 0.0050.0050.0050.0040.0043.000 0.0070.0070.0060.0060.0063.250 0.0090.0080.0080.0080.0073.500 0.0110.0100.0100.0100.0093.750 0.0130.0120.0120.0120.0114.000 0.0150.0150.0140.0140.0134.250 0.0180.0170.0170.0160.0164.500 0.0200.0200.0190.0190.0184.750 0.0230.0230.0220.0220.0215.000 0.0260.0260.0250.0250.0245.250 0.0300.0290.0280.0280.0275.500 0.0330.0320.0320.0310.0305.750 0.0370.0360.0350.0340.0346.000 0.0400.0400.0390.0380.0376.250 0.0440.0430.0430.0420.0416.500 0.0480.0470.0470.0460.0456.750 0.0520.0520.0510.0500.0497.000 0.0570.0560.0550.0540.0537.250 0.0610.0600.0590.0580.0587.500 0.0660.0650.0640.0630.0627.750 0.0710.0700.0690.0680.0678.000 0.0760.0750.0740.0730.0728.250 0.0820.0810.0790.0780.0778.500 0.0890.0870.0860.0850.0838.750 0.0960.0950.0930.0920.0909.000 0.1040.1020.1010.0990.0989.250 0.1110.1100.1080.1070.1059.500 0.1200.1180.1160.1140.1139.750 Page 14 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.1300.1280.1250.1240.12210.000 0.1410.1390.1360.1340.13210.250 0.1550.1520.1490.1460.14410.500 0.1720.1680.1650.1610.15810.750 0.1930.1880.1840.1790.17611.000 0.2210.2140.2090.2030.19811.250 0.2900.2650.2480.2360.22711.500 0.5840.5000.4230.3660.32311.750 0.7770.7660.7490.7160.65912.000 0.8190.8120.8050.7960.78712.250 0.8420.8380.8340.8300.82412.500 0.8590.8560.8530.8500.84612.750 0.8720.8700.8670.8650.86213.000 0.8820.8800.8780.8760.87413.250 0.8890.8880.8870.8850.88313.500 0.8950.8940.8930.8920.89113.750 0.8990.8980.8970.8970.89614.000 0.9020.9020.9010.9000.90014.250 0.9050.9040.9040.9030.90314.500 0.9070.9070.9060.9060.90514.750 0.9080.9080.9080.9080.90715.000 0.9090.9090.9090.9090.90915.250 0.9090.9090.9090.9090.90915.500 0.9090.9090.9090.9090.90915.750 0.9080.9080.9080.9080.90916.000 0.9070.9070.9070.9070.90816.250 0.9050.9050.9060.9060.90616.500 0.9030.9040.9040.9040.90516.750 0.9020.9020.9020.9030.90317.000 0.8990.9000.9000.9010.90117.250 0.8970.8980.8980.8990.89917.500 0.8950.8950.8960.8960.89717.750 0.8920.8920.8930.8940.89418.000 0.8890.8900.8900.8910.89118.250 0.8860.8870.8870.8880.88818.500 0.8830.8830.8840.8850.88518.750 0.8790.8800.8800.8810.88219.000 0.8750.8760.8770.8780.87819.250 0.8710.8720.8730.8740.87519.500 0.8670.8680.8690.8700.87119.750 0.8630.8640.8650.8660.86620.000 Page 15 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.8590.8600.8600.8610.86220.250 0.8540.8550.8560.8570.85820.500 0.8500.8510.8520.8530.85320.750 0.8460.8460.8470.8480.84921.000 0.8410.8420.8430.8440.84521.250 0.8370.8380.8380.8390.84021.500 0.8320.8330.8340.8350.83621.750 0.8280.8290.8300.8300.83122.000 0.8230.8240.8250.8260.82722.250 0.8190.8200.8210.8220.82222.500 0.8140.8150.8160.8170.81822.750 0.8100.8110.8120.8120.81323.000 0.8050.8060.8070.8080.80923.250 0.8010.8020.8020.8030.80423.500 0.7960.7970.7980.7990.80023.750 (N/A)(N/A)(N/A)(N/A)0.79524.000 Page 16 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.0000.0000.0000.0000.0000.000 0.0000.0000.0000.0000.0000.250 0.0000.0000.0000.0000.0000.500 0.0000.0000.0000.0000.0000.750 0.0000.0000.0000.0000.0001.000 0.0010.0010.0010.0010.0001.250 0.0030.0020.0020.0020.0011.500 0.0050.0040.0040.0030.0031.750 0.0070.0070.0060.0060.0052.000 0.0100.0100.0090.0080.0082.250 0.0140.0130.0120.0120.0112.500 0.0170.0160.0160.0150.0142.750 0.0210.0200.0200.0190.0183.000 0.0250.0250.0240.0230.0223.250 0.0300.0290.0280.0270.0263.500 0.0350.0340.0330.0320.0313.750 0.0400.0390.0380.0370.0364.000 0.0450.0440.0430.0420.0414.250 0.0500.0490.0480.0470.0464.500 0.0560.0550.0540.0530.0514.750 0.0620.0610.0600.0580.0575.000 0.0680.0670.0660.0650.0635.250 0.0750.0740.0720.0710.0705.500 0.0820.0800.0790.0780.0765.750 0.0890.0870.0860.0840.0836.000 0.0960.0940.0930.0910.0906.250 0.1030.1020.1000.0990.0976.500 0.1110.1090.1080.1060.1056.750 0.1190.1170.1150.1140.1127.000 0.1260.1250.1230.1220.1207.250 0.1350.1330.1310.1300.1287.500 0.1430.1410.1400.1380.1367.750 0.1520.1500.1480.1470.1458.000 0.1620.1600.1580.1560.1548.250 0.1730.1710.1690.1660.1648.500 0.1860.1830.1810.1780.1768.750 0.2000.1970.1940.1920.1899.000 0.2140.2110.2080.2050.2039.250 0.2280.2250.2220.2190.2179.500 0.2440.2410.2370.2340.2319.750 Page 17 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.2630.2590.2550.2510.24810.000 0.2840.2800.2750.2710.26710.250 0.3100.3040.2990.2940.28910.500 0.3400.3340.3270.3210.31510.750 0.3780.3690.3620.3540.34711.000 0.4280.4170.4060.3960.38711.250 0.5490.5060.4760.4550.44011.500 1.0560.9120.7800.6820.60711.750 1.3881.3681.3391.2831.18512.000 1.4581.4471.4351.4211.40512.250 1.4941.4881.4821.4751.46712.500 1.5171.5131.5091.5041.49912.750 1.5311.5291.5261.5231.52013.000 1.5401.5381.5371.5351.53313.250 1.5441.5441.5431.5421.54113.500 1.5461.5461.5451.5451.54513.750 1.5441.5451.5451.5451.54614.000 1.5421.5421.5431.5431.54414.250 1.5381.5391.5401.5401.54114.500 1.5341.5351.5361.5371.53714.750 1.5291.5301.5311.5321.53315.000 1.5231.5251.5261.5271.52815.250 1.5171.5181.5201.5211.52215.500 1.5101.5111.5131.5141.51615.750 1.5031.5041.5061.5071.50816.000 1.4951.4971.4981.5001.50116.250 1.4881.4901.4911.4921.49416.500 1.4811.4831.4841.4861.48716.750 1.4751.4761.4771.4791.48017.000 1.4681.4701.4711.4721.47417.250 1.4621.4631.4651.4661.46717.500 1.4561.4571.4581.4601.46117.750 1.4501.4511.4521.4531.45518.000 1.4441.4451.4461.4471.44918.250 1.4381.4391.4401.4411.44318.500 1.4321.4331.4341.4361.43718.750 1.4271.4281.4291.4301.43119.000 1.4211.4221.4231.4241.42519.250 1.4151.4171.4181.4191.42019.500 1.4101.4111.4121.4131.41419.750 1.4051.4061.4071.4081.40920.000 Page 18 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 1.4001.4011.4021.4031.40420.250 1.3951.3961.3971.3981.39920.500 1.3911.3921.3921.3931.39420.750 1.3871.3871.3881.3891.39021.000 1.3831.3831.3841.3851.38621.250 1.3791.3791.3801.3811.38221.500 1.3751.3751.3761.3771.37821.750 1.3711.3711.3721.3731.37422.000 1.3661.3671.3681.3691.37022.250 1.3621.3631.3641.3651.36522.500 1.3581.3591.3601.3601.36122.750 1.3531.3541.3551.3561.35723.000 1.3491.3501.3511.3521.35323.250 1.3451.3451.3461.3471.34823.500 1.3401.3411.3421.3431.34423.750 (N/A)(N/A)(N/A)(N/A)1.33924.000 Page 19 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Elevation-Area Volume Curve Volume (Total) (ac-ft) Volume (ac-ft) A1+A2+sqr(A1*A 2) (acres) Area (acres) Planimeter (ft²) Elevation (ft) 0.0000.0000.0000.2520.0846.70 1.7641.7640.7560.2520.0853.70 Page 20 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Elevation-Area Volume Curve Volume (Total) (ac-ft) Volume (ac-ft) A1+A2+sqr(A1*A 2) (acres) Area (acres) Planimeter (ft²) Elevation (ft) 0.0000.0000.0000.2520.0846.70 1.7641.7640.7560.2520.0853.70 Page 21 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Outlet Input Data Requested Pond Water Surface Elevations ft846.70Minimum (Headwater) ft0.50Increment (Headwater) ft853.70Maximum (Headwater) Outlet Connectivity E2 (ft) E1 (ft) OutfallDirectionOutlet IDStructure Type 853.70846.70Culvert - 1ForwardOrifice - 1Orifice-Circular 853.70852.20Culvert - 1ForwardOrifice - 2Orifice-Circular 853.70853.20Culvert - 1ForwardOrifice - 3Orifice-Circular 853.70853.20Culvert - 1ForwardWeir - 1Rectangular Weir 853.70100.00TWForwardCulvert - 1Culvert-Circular (N/A)(N/A)TailwaterTailwater Settings Page 22 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Outlet Input Data Structure ID: Culvert - 1 Structure Type: Culvert-Circular 1Number of Barrels in12.0Diameter ft20.00Length ft20.01Length (Computed Barrel) ft/ft0.025Slope (Computed) Outlet Control Data 0.013Manning's n 0.500Ke 0.031Kb 0.500Kr ft0.00Convergence Tolerance Inlet Control Data Form 1Equation Form 0.0018K 2.0000M 0.0292C 0.7400Y 0.000T1 ratio (HW/D) 1.195T2 ratio (HW/D) -0.500Slope Correction Factor Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... ft100.00T1 Elevation ft³/s2.75T1 Flow ft101.19T2 Elevation ft³/s3.14T2 Flow Page 23 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Outlet Input Data Structure ID: Orifice - 1 Structure Type: Orifice-Circular 1Number of Openings ft846.70Elevation in3.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Weir - 1 Structure Type: Rectangular Weir 1Number of Openings ft853.20Elevation ft4.00Weir Length (ft^0.5)/s3.00Weir Coefficient Structure ID: Orifice - 2 Structure Type: Orifice-Circular 1Number of Openings ft852.20Elevation in6.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Orifice - 3 Structure Type: Orifice-Circular 1Number of Openings ft853.20Elevation in8.0Orifice Diameter 0.600Orifice Coefficient Structure ID: TW Structure Type: TW Setup, DS Channel Free OutfallTailwater Type Convergence Tolerances 30Maximum Iterations ft0.01Tailwater Tolerance (Minimum) ft0.50Tailwater Tolerance (Maximum) ft0.01Headwater Tolerance (Minimum) ft0.50Headwater Tolerance (Maximum) ft³/s0.001Flow Tolerance (Minimum) Page 24 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Outlet Input Data Convergence Tolerances ft³/s10.000Flow Tolerance (Maximum) Page 25 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Culvert - 1 (Culvert-Circular) --------------------------------------- Mannings open channel maximum capacity: 6.06 ft³/s Upstream ID = Orifice - 1, Orifice - 2, Orifice - 3, Weir - 1 Downstream ID = Tailwater (Pond Outfall) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.00Free Outfall0.000.000.00846.70 0.00(N/A)0.000.00Free OutfallFree Outfall100.240.14847.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.290.22847.70 0.00(N/A)0.000.00Free OutfallFree Outfall100.330.28848.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.360.32848.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.77849.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.400.40849.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.80850.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.430.46850.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.84851.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.460.52851.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.87852.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.671.05852.70 0.00(N/A)0.000.00Free OutfallFree Outfall100.801.42853.20 0.00(N/A)0.000.00Free OutfallFree Outfall102.746.50853.70 Message WS below an invert; no flow. CRIT.DEPTH CONTROL Vh= .054ft Dcr= .155ft CRIT.DEPTH Hev= .00ft CRIT.DEPTH CONTROL Vh= .067ft Dcr= .193ft CRIT.DEPTH Hev= .00ft FLOW PRECEDENCE SET TO UPSTREAM CONTROLLING STRUCTURE CRIT.DEPTH CONTROL Vh= .083ft Dcr= .234ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=20.01ft Vh=43.956ft HL=93.437ft Hev= .00ft Page 26 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Culvert - 1 (Culvert-Circular) --------------------------------------- Mannings open channel maximum capacity: 6.06 ft³/s Upstream ID = Orifice - 1, Orifice - 2, Orifice - 3, Weir - 1 Downstream ID = Tailwater (Pond Outfall) Message FLOW PRECEDENCE SET TO UPSTREAM CONTROLLING STRUCTURE FULL FLOW...Lfull=20.01ft Vh=44.028ft HL=93.589ft Hev= .00ft CRIT.DEPTH CONTROL Vh= .101ft Dcr= .283ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=20.01ft Vh=44.097ft HL=93.737ft Hev= .00ft CRIT.DEPTH CONTROL Vh= .108ft Dcr= .300ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=20.01ft Vh=44.166ft HL=93.881ft Hev= .00ft FLOW PRECEDENCE SET TO UPSTREAM CONTROLLING STRUCTURE CRIT.DEPTH CONTROL Vh= .198ft Dcr= .504ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=17.91ft Vh=1.063ft HL=2.190ft Hev= .00ft Page 27 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 1 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.24Free Outfall847.200.14847.20 0.00(N/A)0.000.00100.29Free Outfall847.700.22847.70 0.00(N/A)0.000.00100.33Free Outfall848.200.28848.20 0.00(N/A)0.000.00100.36Free Outfall848.700.32848.70 0.00(N/A)0.000.000.00Free Outfall849.200.36849.20 0.00(N/A)0.000.00100.40Free Outfall849.700.40849.70 0.00(N/A)0.000.000.00Free Outfall850.200.43850.20 0.00(N/A)0.000.00100.43Free Outfall850.700.47850.70 0.00(N/A)0.000.000.00Free Outfall851.200.49851.20 0.00(N/A)0.000.00100.46Free Outfall851.700.52851.70 0.00(N/A)0.000.000.00Free Outfall852.200.55852.20 0.00(N/A)0.000.00100.67Free Outfall852.700.57852.70 0.00(N/A)0.000.00100.80Free Outfall853.200.60853.20 0.00(N/A)0.000.00102.74Free Outfall853.700.62853.70 Message WS below an invert; no flow. H =.38 H =.88 H =1.38 H =1.88 H =2.38 H =2.88 H =3.38 H =3.88 H =4.38 H =4.88 H =5.38 H =5.88 H =6.38 H =6.88 Page 28 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Weir - 1 (Rectangular Weir) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.240.000.000.00847.20 0.00(N/A)0.000.00100.290.000.000.00847.70 0.00(N/A)0.000.00100.330.000.000.00848.20 0.00(N/A)0.000.00100.360.000.000.00848.70 0.00(N/A)0.000.000.000.000.000.00849.20 0.00(N/A)0.000.00100.400.000.000.00849.70 0.00(N/A)0.000.000.000.000.000.00850.20 0.00(N/A)0.000.00100.430.000.000.00850.70 0.00(N/A)0.000.000.000.000.000.00851.20 0.00(N/A)0.000.00100.460.000.000.00851.70 0.00(N/A)0.000.000.000.000.000.00852.20 0.00(N/A)0.000.00100.670.000.000.00852.70 0.00(N/A)0.000.00100.800.000.000.00853.20 0.00(N/A)0.000.00102.74Free Outfall853.704.24853.70 Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. Page 29 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Weir - 1 (Rectangular Weir) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. H=.50; Htw=.00; Qfree=4.24; Page 30 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 2 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.240.000.000.00847.20 0.00(N/A)0.000.00100.290.000.000.00847.70 0.00(N/A)0.000.00100.330.000.000.00848.20 0.00(N/A)0.000.00100.360.000.000.00848.70 0.00(N/A)0.000.000.000.000.000.00849.20 0.00(N/A)0.000.00100.400.000.000.00849.70 0.00(N/A)0.000.000.000.000.000.00850.20 0.00(N/A)0.000.00100.430.000.000.00850.70 0.00(N/A)0.000.000.000.000.000.00851.20 0.00(N/A)0.000.00100.460.000.000.00851.70 0.00(N/A)0.000.000.000.000.000.00852.20 0.00(N/A)0.000.00100.67Free Outfall852.700.47852.70 0.00(N/A)0.000.00100.80Free Outfall853.200.82853.20 0.00(N/A)0.000.00102.74Free Outfall853.701.06853.70 Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. Page 31 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 2 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Message WS below an invert; no flow. WS below an invert; no flow. H =.25 H =.75 H =1.25 Page 32 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 3 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.240.000.000.00847.20 0.00(N/A)0.000.00100.290.000.000.00847.70 0.00(N/A)0.000.00100.330.000.000.00848.20 0.00(N/A)0.000.00100.360.000.000.00848.70 0.00(N/A)0.000.000.000.000.000.00849.20 0.00(N/A)0.000.00100.400.000.000.00849.70 0.00(N/A)0.000.000.000.000.000.00850.20 0.00(N/A)0.000.00100.430.000.000.00850.70 0.00(N/A)0.000.000.000.000.000.00851.20 0.00(N/A)0.000.00100.460.000.000.00851.70 0.00(N/A)0.000.000.000.000.000.00852.20 0.00(N/A)0.000.00100.670.000.000.00852.70 0.00(N/A)0.000.00100.800.000.000.00853.20 0.00(N/A)0.000.00102.74Free Outfall853.700.58853.70 Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. Page 33 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 3 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. CRIT.DEPTH CONTROL Vh= .143ft Dcr= .357ft CRIT.DEPTH Hev= .00ft Page 34 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Composite Rating Curve Composite Outflow Summary Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.00846.70 0.00(N/A)0.14847.20 0.00(N/A)0.22847.70 0.00(N/A)0.28848.20 0.00(N/A)0.32848.70 0.00(N/A)0.36849.20 0.00(N/A)0.40849.70 0.00(N/A)0.43850.20 0.00(N/A)0.46850.70 0.00(N/A)0.49851.20 0.00(N/A)0.52851.70 0.00(N/A)0.55852.20 0.00(N/A)1.05852.70 0.00(N/A)1.42853.20 0.00(N/A)6.50853.70 Contributing Structures (no Q: Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Page 35 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Composite Outlet Structure - 1 Return Event: 10 yearsSubsection: Composite Rating Curve Composite Outflow Summary Contributing Structures Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1 Page 36 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Outlet Input Data Requested Pond Water Surface Elevations ft846.70Minimum (Headwater) ft0.50Increment (Headwater) ft853.70Maximum (Headwater) Outlet Connectivity E2 (ft) E1 (ft) OutfallDirectionOutlet IDStructure Type 853.70846.70Culvert - 1ForwardOrifice - 1Orifice-Circular 853.70852.20Culvert - 1ForwardOrifice - 2Orifice-Circular 853.70853.20Culvert - 1ForwardOrifice - 3Orifice-Circular 853.70853.20Culvert - 1ForwardWeir - 1Rectangular Weir 853.70100.00TWForwardCulvert - 1Culvert-Circular (N/A)(N/A)TailwaterTailwater Settings Page 37 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Outlet Input Data Structure ID: Culvert - 1 Structure Type: Culvert-Circular 1Number of Barrels in12.0Diameter ft20.00Length ft20.01Length (Computed Barrel) ft/ft0.025Slope (Computed) Outlet Control Data 0.013Manning's n 0.500Ke 0.031Kb 0.500Kr ft0.00Convergence Tolerance Inlet Control Data Form 1Equation Form 0.0018K 2.0000M 0.0292C 0.7400Y 0.000T1 ratio (HW/D) 1.195T2 ratio (HW/D) -0.500Slope Correction Factor Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... ft100.00T1 Elevation ft³/s2.75T1 Flow ft101.19T2 Elevation ft³/s3.14T2 Flow Page 38 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Outlet Input Data Structure ID: Orifice - 1 Structure Type: Orifice-Circular 1Number of Openings ft846.70Elevation in3.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Weir - 1 Structure Type: Rectangular Weir 1Number of Openings ft853.20Elevation ft4.00Weir Length (ft^0.5)/s3.00Weir Coefficient Structure ID: Orifice - 2 Structure Type: Orifice-Circular 1Number of Openings ft852.20Elevation in6.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Orifice - 3 Structure Type: Orifice-Circular 1Number of Openings ft853.20Elevation in8.0Orifice Diameter 0.600Orifice Coefficient Structure ID: TW Structure Type: TW Setup, DS Channel Free OutfallTailwater Type Convergence Tolerances 30Maximum Iterations ft0.01Tailwater Tolerance (Minimum) ft0.50Tailwater Tolerance (Maximum) ft0.01Headwater Tolerance (Minimum) ft0.50Headwater Tolerance (Maximum) ft³/s0.001Flow Tolerance (Minimum) Page 39 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Outlet Input Data Convergence Tolerances ft³/s10.000Flow Tolerance (Maximum) Page 40 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Culvert - 1 (Culvert-Circular) --------------------------------------- Mannings open channel maximum capacity: 6.06 ft³/s Upstream ID = Orifice - 1, Orifice - 2, Orifice - 3, Weir - 1 Downstream ID = Tailwater (Pond Outfall) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.00Free Outfall0.000.000.00846.70 0.00(N/A)0.000.00Free OutfallFree Outfall100.240.14847.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.290.22847.70 0.00(N/A)0.000.00Free OutfallFree Outfall100.330.28848.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.360.32848.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.77849.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.400.40849.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.80850.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.430.46850.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.84851.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.460.52851.70 0.00(N/A)0.000.00Free OutfallFree Outfall0.0041.87852.20 0.00(N/A)0.000.00Free OutfallFree Outfall100.671.05852.70 0.00(N/A)0.000.00Free OutfallFree Outfall100.801.42853.20 0.00(N/A)0.000.00Free OutfallFree Outfall102.746.50853.70 Message WS below an invert; no flow. CRIT.DEPTH CONTROL Vh= .054ft Dcr= .155ft CRIT.DEPTH Hev= .00ft CRIT.DEPTH CONTROL Vh= .067ft Dcr= .193ft CRIT.DEPTH Hev= .00ft FLOW PRECEDENCE SET TO UPSTREAM CONTROLLING STRUCTURE CRIT.DEPTH CONTROL Vh= .083ft Dcr= .234ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=20.01ft Vh=43.956ft HL=93.437ft Hev= .00ft Page 41 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Culvert - 1 (Culvert-Circular) --------------------------------------- Mannings open channel maximum capacity: 6.06 ft³/s Upstream ID = Orifice - 1, Orifice - 2, Orifice - 3, Weir - 1 Downstream ID = Tailwater (Pond Outfall) Message FLOW PRECEDENCE SET TO UPSTREAM CONTROLLING STRUCTURE FULL FLOW...Lfull=20.01ft Vh=44.028ft HL=93.589ft Hev= .00ft CRIT.DEPTH CONTROL Vh= .101ft Dcr= .283ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=20.01ft Vh=44.097ft HL=93.737ft Hev= .00ft CRIT.DEPTH CONTROL Vh= .108ft Dcr= .300ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=20.01ft Vh=44.166ft HL=93.881ft Hev= .00ft FLOW PRECEDENCE SET TO UPSTREAM CONTROLLING STRUCTURE CRIT.DEPTH CONTROL Vh= .198ft Dcr= .504ft CRIT.DEPTH Hev= .00ft FULL FLOW...Lfull=17.91ft Vh=1.063ft HL=2.190ft Hev= .00ft Page 42 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 1 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.24Free Outfall847.200.14847.20 0.00(N/A)0.000.00100.29Free Outfall847.700.22847.70 0.00(N/A)0.000.00100.33Free Outfall848.200.28848.20 0.00(N/A)0.000.00100.36Free Outfall848.700.32848.70 0.00(N/A)0.000.000.00Free Outfall849.200.36849.20 0.00(N/A)0.000.00100.40Free Outfall849.700.40849.70 0.00(N/A)0.000.000.00Free Outfall850.200.43850.20 0.00(N/A)0.000.00100.43Free Outfall850.700.47850.70 0.00(N/A)0.000.000.00Free Outfall851.200.49851.20 0.00(N/A)0.000.00100.46Free Outfall851.700.52851.70 0.00(N/A)0.000.000.00Free Outfall852.200.55852.20 0.00(N/A)0.000.00100.67Free Outfall852.700.57852.70 0.00(N/A)0.000.00100.80Free Outfall853.200.60853.20 0.00(N/A)0.000.00102.74Free Outfall853.700.62853.70 Message WS below an invert; no flow. H =.38 H =.88 H =1.38 H =1.88 H =2.38 H =2.88 H =3.38 H =3.88 H =4.38 H =4.88 H =5.38 H =5.88 H =6.38 H =6.88 Page 43 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Weir - 1 (Rectangular Weir) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.240.000.000.00847.20 0.00(N/A)0.000.00100.290.000.000.00847.70 0.00(N/A)0.000.00100.330.000.000.00848.20 0.00(N/A)0.000.00100.360.000.000.00848.70 0.00(N/A)0.000.000.000.000.000.00849.20 0.00(N/A)0.000.00100.400.000.000.00849.70 0.00(N/A)0.000.000.000.000.000.00850.20 0.00(N/A)0.000.00100.430.000.000.00850.70 0.00(N/A)0.000.000.000.000.000.00851.20 0.00(N/A)0.000.00100.460.000.000.00851.70 0.00(N/A)0.000.000.000.000.000.00852.20 0.00(N/A)0.000.00100.670.000.000.00852.70 0.00(N/A)0.000.00100.800.000.000.00853.20 0.00(N/A)0.000.00102.74Free Outfall853.704.24853.70 Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. Page 44 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Weir - 1 (Rectangular Weir) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. H=.50; Htw=.00; Qfree=4.24; Page 45 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 2 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.240.000.000.00847.20 0.00(N/A)0.000.00100.290.000.000.00847.70 0.00(N/A)0.000.00100.330.000.000.00848.20 0.00(N/A)0.000.00100.360.000.000.00848.70 0.00(N/A)0.000.000.000.000.000.00849.20 0.00(N/A)0.000.00100.400.000.000.00849.70 0.00(N/A)0.000.000.000.000.000.00850.20 0.00(N/A)0.000.00100.430.000.000.00850.70 0.00(N/A)0.000.000.000.000.000.00851.20 0.00(N/A)0.000.00100.460.000.000.00851.70 0.00(N/A)0.000.000.000.000.000.00852.20 0.00(N/A)0.000.00100.67Free Outfall852.700.47852.70 0.00(N/A)0.000.00100.80Free Outfall853.200.82853.20 0.00(N/A)0.000.00102.74Free Outfall853.701.06853.70 Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. Page 46 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 2 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Message WS below an invert; no flow. WS below an invert; no flow. H =.25 H =.75 H =1.25 Page 47 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 3 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Tailwater Error (ft) Downstream Channel Tailwater (ft) Convergence Error (ft³/s) Downstream Hydraulic Grade Line Error (ft) Next Downstream Hydraulic Grade Line (ft) Converge Downstream Hydraulic Grade Line (ft) (into) Headwater Hydraulic Grade Line (ft) Device Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.000.000.000.000.000.00846.70 0.00(N/A)0.000.00100.240.000.000.00847.20 0.00(N/A)0.000.00100.290.000.000.00847.70 0.00(N/A)0.000.00100.330.000.000.00848.20 0.00(N/A)0.000.00100.360.000.000.00848.70 0.00(N/A)0.000.000.000.000.000.00849.20 0.00(N/A)0.000.00100.400.000.000.00849.70 0.00(N/A)0.000.000.000.000.000.00850.20 0.00(N/A)0.000.00100.430.000.000.00850.70 0.00(N/A)0.000.000.000.000.000.00851.20 0.00(N/A)0.000.00100.460.000.000.00851.70 0.00(N/A)0.000.000.000.000.000.00852.20 0.00(N/A)0.000.00100.670.000.000.00852.70 0.00(N/A)0.000.00100.800.000.000.00853.20 0.00(N/A)0.000.00102.74Free Outfall853.700.58853.70 Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. Page 48 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = Orifice - 3 (Orifice-Circular) --------------------------------------- Upstream ID = (Pond Water Surface) Downstream ID = Culvert - 1 (Culvert-Circular) Message WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. CRIT.DEPTH CONTROL Vh= .143ft Dcr= .357ft CRIT.DEPTH Hev= .00ft Page 49 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Composite Rating Curve Composite Outflow Summary Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.00846.70 0.00(N/A)0.14847.20 0.00(N/A)0.22847.70 0.00(N/A)0.28848.20 0.00(N/A)0.32848.70 0.00(N/A)0.36849.20 0.00(N/A)0.40849.70 0.00(N/A)0.43850.20 0.00(N/A)0.46850.70 0.00(N/A)0.49851.20 0.00(N/A)0.52851.70 0.00(N/A)0.55852.20 0.00(N/A)1.05852.70 0.00(N/A)1.42853.20 0.00(N/A)6.50853.70 Contributing Structures (no Q: Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Page 50 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Composite Outlet Structure - 1 Return Event: 100 yearsSubsection: Composite Rating Curve Composite Outflow Summary Contributing Structures Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1 Page 51 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Outlet-2 Return Event: 10 yearsSubsection: Diverted Hydrograph ft³/s0.44Peak Discharge hours15.650Time to Peak ac-ft0.489Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.002.200 0.000.000.000.000.002.450 0.000.000.000.000.002.700 0.010.010.010.000.002.950 0.010.010.010.010.013.200 0.010.010.010.010.013.450 0.010.010.010.010.013.700 0.010.010.010.010.013.950 0.020.020.020.020.014.200 0.020.020.020.020.024.450 0.020.020.020.020.024.700 0.030.030.020.020.024.950 0.030.030.030.030.035.200 0.030.030.030.030.035.450 0.040.040.040.030.035.700 0.040.040.040.040.045.950 0.050.040.040.040.046.200 0.050.050.050.050.056.450 0.050.050.050.050.056.700 0.060.060.060.060.066.950 0.060.060.060.060.067.200 0.070.070.070.070.067.450 0.070.070.070.070.077.700 0.080.080.080.080.087.950 0.090.080.080.080.088.200 0.090.090.090.090.098.450 0.100.100.100.100.098.700 0.110.110.100.100.108.950 0.120.120.110.110.119.200 0.130.120.120.120.129.450 0.130.130.130.130.139.700 0.140.140.140.140.149.950 0.150.150.150.150.1510.200 0.160.160.160.150.1510.450 0.170.170.170.160.1610.700 0.180.180.180.170.1710.950 0.200.190.190.190.1811.200 Page 52 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Outlet-2 Return Event: 10 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.230.220.210.210.2011.450 0.320.290.270.250.2411.700 0.400.400.390.370.3511.950 0.420.410.410.410.4112.200 0.420.420.420.420.4212.450 0.430.430.430.420.4212.700 0.430.430.430.430.4312.950 0.430.430.430.430.4313.200 0.440.440.430.430.4313.450 0.440.440.440.440.4413.700 0.440.440.440.440.4413.950 0.440.440.440.440.4414.200 0.440.440.440.440.4414.450 0.440.440.440.440.4414.700 0.440.440.440.440.4414.950 0.440.440.440.440.4415.200 0.440.440.440.440.4415.450 0.440.440.440.440.4415.700 0.440.440.440.440.4415.950 0.440.440.440.440.4416.200 0.440.440.440.440.4416.450 0.440.440.440.440.4416.700 0.440.440.440.440.4416.950 0.440.440.440.440.4417.200 0.440.440.440.440.4417.450 0.440.440.440.440.4417.700 0.440.440.440.440.4417.950 0.440.440.440.440.4418.200 0.440.440.440.440.4418.450 0.430.430.430.430.4318.700 0.430.430.430.430.4318.950 0.430.430.430.430.4319.200 0.430.430.430.430.4319.450 0.430.430.430.430.4319.700 0.430.430.430.430.4319.950 0.430.430.430.430.4320.200 0.430.430.430.430.4320.450 0.430.430.430.430.4320.700 0.420.420.430.430.4320.950 0.420.420.420.420.4221.200 0.420.420.420.420.4221.450 0.420.420.420.420.4221.700 Page 53 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Outlet-2 Return Event: 10 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.420.420.420.420.4221.950 0.420.420.420.420.4222.200 0.420.420.420.420.4222.450 0.420.420.420.420.4222.700 0.420.420.420.420.4222.950 0.410.410.410.410.4123.200 0.410.410.410.410.4123.450 0.410.410.410.410.4123.700 (N/A)(N/A)(N/A)0.410.4123.950 Page 54 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Outlet-2 Return Event: 100 yearsSubsection: Diverted Hydrograph ft³/s1.14Peak Discharge hours13.950Time to Peak ac-ft0.912Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.350 0.000.000.000.000.001.600 0.010.010.010.000.001.850 0.010.010.010.010.012.100 0.010.010.010.010.012.350 0.020.020.020.010.012.600 0.020.020.020.020.022.850 0.030.030.020.020.023.100 0.030.030.030.030.033.350 0.040.040.030.030.033.600 0.040.040.040.040.043.850 0.050.050.050.040.044.100 0.050.050.050.050.054.350 0.060.060.060.060.054.600 0.070.070.060.060.064.850 0.070.070.070.070.075.100 0.080.080.080.080.085.350 0.090.090.090.080.085.600 0.100.090.090.090.095.850 0.100.100.100.100.106.100 0.110.110.110.110.116.350 0.120.120.120.120.116.600 0.130.130.130.120.126.850 0.140.140.140.130.137.100 0.150.150.140.140.147.350 0.150.150.150.150.157.600 0.160.160.150.150.157.850 0.160.160.160.160.168.100 0.170.170.170.160.168.350 0.180.170.170.170.178.600 0.180.180.180.180.188.850 0.190.190.190.190.199.100 0.200.200.200.200.199.350 0.210.210.210.200.209.600 0.220.220.220.210.219.850 0.230.230.230.220.2210.100 0.240.240.240.230.2310.350 Page 55 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Outlet-2 Return Event: 100 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.250.250.250.240.2410.600 0.270.260.260.260.2510.850 0.280.280.280.270.2711.100 0.300.300.300.290.2911.350 0.380.360.340.320.3111.600 0.530.510.480.440.4111.850 0.690.620.560.540.5412.100 0.900.870.830.790.7412.350 1.011.000.970.950.9312.600 1.081.071.061.051.0312.850 1.111.111.101.091.0913.100 1.131.131.131.121.1213.350 1.141.141.141.141.1413.600 1.141.141.141.141.1413.850 1.141.141.141.141.1414.100 1.131.131.131.131.1414.350 1.121.121.121.121.1314.600 1.101.111.111.111.1214.850 1.091.091.101.101.1015.100 1.071.071.081.081.0915.350 1.051.061.061.061.0715.600 1.031.031.041.041.0515.850 1.001.001.011.011.0216.100 0.970.970.980.990.9916.350 0.940.950.950.960.9616.600 0.910.920.920.930.9416.850 0.890.890.900.900.9117.100 0.860.870.870.880.8817.350 0.840.840.850.850.8617.600 0.810.820.820.830.8317.850 0.790.790.800.800.8118.100 0.770.770.780.780.7918.350 0.740.750.750.760.7618.600 0.720.730.730.730.7418.850 0.700.700.710.710.7219.100 0.680.680.690.690.6919.350 0.660.660.660.670.6719.600 0.630.640.640.650.6519.850 0.610.620.620.630.6320.100 0.590.600.600.610.6120.350 0.580.580.580.590.5920.600 0.560.560.570.570.5720.850 Page 56 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Outlet-2 Return Event: 100 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.550.550.550.550.5621.100 0.550.550.550.550.5521.350 0.550.550.550.550.5521.600 0.550.550.550.550.5521.850 0.540.540.540.540.5422.100 0.540.540.540.540.5422.350 0.540.540.540.540.5422.600 0.540.540.540.540.5422.850 0.540.540.540.540.5423.100 0.540.540.540.540.5423.350 0.540.540.540.540.5423.600 (N/A)0.540.540.540.5423.850 Page 57 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Elevation-Volume-Flow Table (Pond) Infiltration No InfiltrationInfiltration Method (Computed) Initial Conditions ft846.70Elevation (Water Surface, Initial) ac-ft0.000Volume (Initial) ft³/s0.00Flow (Initial Outlet) ft³/s0.00Flow (Initial Infiltration) ft³/s0.00Flow (Initial, Total) hours0.050Time Increment 2S/t + O (ft³/s) Flow (Total) (ft³/s) Infiltration (ft³/s) Area (acres) Storage (ac-ft) Outflow (ft³/s) Elevation (ft) 0.000.000.000.2520.0000.00846.70 61.130.140.000.2520.1260.14847.20 122.190.220.000.2520.2520.22847.70 183.230.280.000.2520.3780.28848.20 244.260.320.000.2520.5040.32848.70 305.280.360.000.2520.6300.36849.20 366.300.400.000.2520.7560.40849.70 427.320.430.000.2520.8820.43850.20 488.340.460.000.2521.0080.46850.70 549.350.490.000.2521.1340.49851.20 610.360.520.000.2521.2600.52851.70 671.370.550.000.2521.3860.55852.20 732.851.050.000.2521.5121.05852.70 794.211.420.000.2521.6381.42853.20 860.276.500.000.2521.7646.50853.70 Page 58 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Elevation-Volume-Flow Table (Pond) Infiltration No InfiltrationInfiltration Method (Computed) Initial Conditions ft846.70Elevation (Water Surface, Initial) ac-ft0.000Volume (Initial) ft³/s0.00Flow (Initial Outlet) ft³/s0.00Flow (Initial Infiltration) ft³/s0.00Flow (Initial, Total) hours0.050Time Increment 2S/t + O (ft³/s) Flow (Total) (ft³/s) Infiltration (ft³/s) Area (acres) Storage (ac-ft) Outflow (ft³/s) Elevation (ft) 0.000.000.000.2520.0000.00846.70 61.130.140.000.2520.1260.14847.20 122.190.220.000.2520.2520.22847.70 183.230.280.000.2520.3780.28848.20 244.260.320.000.2520.5040.32848.70 305.280.360.000.2520.6300.36849.20 366.300.400.000.2520.7560.40849.70 427.320.430.000.2520.8820.43850.20 488.340.460.000.2521.0080.46850.70 549.350.490.000.2521.1340.49851.20 610.360.520.000.2521.2600.52851.70 671.370.550.000.2521.3860.55852.20 732.851.050.000.2521.5121.05852.70 794.211.420.000.2521.6381.42853.20 860.276.500.000.2521.7646.50853.70 Page 59 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (IN) Return Event: 10 yearsSubsection: Level Pool Pond Routing Summary Infiltration No InfiltrationInfiltration Method (Computed) Initial Conditions ft846.70Elevation (Water Surface, Initial) ac-ft0.000Volume (Initial) ft³/s0.00Flow (Initial Outlet) ft³/s0.00Flow (Initial Infiltration) ft³/s0.00Flow (Initial, Total) hours0.050Time Increment Inflow/Outflow Hydrograph Summary ft³/s21.37Flow (Peak In)hours11.900Time to Peak (Flow, In) ft³/s0.44Flow (Peak Outlet)hours15.650Time to Peak (Flow, Outlet) ft850.31Elevation (Water Surface, Peak) ac-ft0.909Volume (Peak) Mass Balance (ac-ft) ac-ft0.000Volume (Initial) ac-ft1.285Volume (Total Inflow) ac-ft0.000Volume (Total Infiltration) ac-ft0.489Volume (Total Outlet Outflow) ac-ft0.793Volume (Retained) ac-ft-0.002Volume (Unrouted) %0.1Error (Mass Balance) Page 60 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (IN) Return Event: 100 yearsSubsection: Level Pool Pond Routing Summary Infiltration No InfiltrationInfiltration Method (Computed) Initial Conditions ft846.70Elevation (Water Surface, Initial) ac-ft0.000Volume (Initial) ft³/s0.00Flow (Initial Outlet) ft³/s0.00Flow (Initial Infiltration) ft³/s0.00Flow (Initial, Total) hours0.050Time Increment Inflow/Outflow Hydrograph Summary ft³/s36.54Flow (Peak In)hours11.900Time to Peak (Flow, In) ft³/s1.14Flow (Peak Outlet)hours13.950Time to Peak (Flow, Outlet) ft852.83Elevation (Water Surface, Peak) ac-ft1.546Volume (Peak) Mass Balance (ac-ft) ac-ft0.000Volume (Initial) ac-ft2.251Volume (Total Inflow) ac-ft0.000Volume (Total Infiltration) ac-ft0.912Volume (Total Outlet Outflow) ac-ft1.337Volume (Retained) ac-ft-0.002Volume (Unrouted) %0.1Error (Mass Balance) Page 61 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Pond Routed Hydrograph (total out) ft³/s0.44Peak Discharge hours15.650Time to Peak ac-ft0.489Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.002.200 0.000.000.000.000.002.450 0.000.000.000.000.002.700 0.010.010.010.000.002.950 0.010.010.010.010.013.200 0.010.010.010.010.013.450 0.010.010.010.010.013.700 0.010.010.010.010.013.950 0.020.020.020.020.014.200 0.020.020.020.020.024.450 0.020.020.020.020.024.700 0.030.030.020.020.024.950 0.030.030.030.030.035.200 0.030.030.030.030.035.450 0.040.040.040.030.035.700 0.040.040.040.040.045.950 0.050.040.040.040.046.200 0.050.050.050.050.056.450 0.050.050.050.050.056.700 0.060.060.060.060.066.950 0.060.060.060.060.067.200 0.070.070.070.070.067.450 0.070.070.070.070.077.700 0.080.080.080.080.087.950 0.090.080.080.080.088.200 0.090.090.090.090.098.450 0.100.100.100.100.098.700 0.110.110.100.100.108.950 0.120.120.110.110.119.200 0.130.120.120.120.129.450 0.130.130.130.130.139.700 0.140.140.140.140.149.950 0.150.150.150.150.1510.200 0.160.160.160.150.1510.450 0.170.170.170.160.1610.700 0.180.180.180.170.1710.950 0.200.190.190.190.1811.200 Page 62 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.230.220.210.210.2011.450 0.320.290.270.250.2411.700 0.400.400.390.370.3511.950 0.420.410.410.410.4112.200 0.420.420.420.420.4212.450 0.430.430.430.420.4212.700 0.430.430.430.430.4312.950 0.430.430.430.430.4313.200 0.440.440.430.430.4313.450 0.440.440.440.440.4413.700 0.440.440.440.440.4413.950 0.440.440.440.440.4414.200 0.440.440.440.440.4414.450 0.440.440.440.440.4414.700 0.440.440.440.440.4414.950 0.440.440.440.440.4415.200 0.440.440.440.440.4415.450 0.440.440.440.440.4415.700 0.440.440.440.440.4415.950 0.440.440.440.440.4416.200 0.440.440.440.440.4416.450 0.440.440.440.440.4416.700 0.440.440.440.440.4416.950 0.440.440.440.440.4417.200 0.440.440.440.440.4417.450 0.440.440.440.440.4417.700 0.440.440.440.440.4417.950 0.440.440.440.440.4418.200 0.440.440.440.440.4418.450 0.430.430.430.430.4318.700 0.430.430.430.430.4318.950 0.430.430.430.430.4319.200 0.430.430.430.430.4319.450 0.430.430.430.430.4319.700 0.430.430.430.430.4319.950 0.430.430.430.430.4320.200 0.430.430.430.430.4320.450 0.430.430.430.430.4320.700 0.420.420.430.430.4320.950 0.420.420.420.420.4221.200 0.420.420.420.420.4221.450 0.420.420.420.420.4221.700 Page 63 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.420.420.420.420.4221.950 0.420.420.420.420.4222.200 0.420.420.420.420.4222.450 0.420.420.420.420.4222.700 0.420.420.420.420.4222.950 0.410.410.410.410.4123.200 0.410.410.410.410.4123.450 0.410.410.410.410.4123.700 (N/A)(N/A)(N/A)0.410.4123.950 Page 64 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Pond Routed Hydrograph (total out) ft³/s1.14Peak Discharge hours13.950Time to Peak ac-ft0.912Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.350 0.000.000.000.000.001.600 0.010.010.010.000.001.850 0.010.010.010.010.012.100 0.010.010.010.010.012.350 0.020.020.020.010.012.600 0.020.020.020.020.022.850 0.030.030.020.020.023.100 0.030.030.030.030.033.350 0.040.040.030.030.033.600 0.040.040.040.040.043.850 0.050.050.050.040.044.100 0.050.050.050.050.054.350 0.060.060.060.060.054.600 0.070.070.060.060.064.850 0.070.070.070.070.075.100 0.080.080.080.080.085.350 0.090.090.090.080.085.600 0.100.090.090.090.095.850 0.100.100.100.100.106.100 0.110.110.110.110.116.350 0.120.120.120.120.116.600 0.130.130.130.120.126.850 0.140.140.140.130.137.100 0.150.150.140.140.147.350 0.150.150.150.150.157.600 0.160.160.150.150.157.850 0.160.160.160.160.168.100 0.170.170.170.160.168.350 0.180.170.170.170.178.600 0.180.180.180.180.188.850 0.190.190.190.190.199.100 0.200.200.200.200.199.350 0.210.210.210.200.209.600 0.220.220.220.210.219.850 0.230.230.230.220.2210.100 0.240.240.240.230.2310.350 Page 65 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.250.250.250.240.2410.600 0.270.260.260.260.2510.850 0.280.280.280.270.2711.100 0.300.300.300.290.2911.350 0.380.360.340.320.3111.600 0.530.510.480.440.4111.850 0.690.620.560.540.5412.100 0.900.870.830.790.7412.350 1.011.000.970.950.9312.600 1.081.071.061.051.0312.850 1.111.111.101.091.0913.100 1.131.131.131.121.1213.350 1.141.141.141.141.1413.600 1.141.141.141.141.1413.850 1.141.141.141.141.1414.100 1.131.131.131.131.1414.350 1.121.121.121.121.1314.600 1.101.111.111.111.1214.850 1.091.091.101.101.1015.100 1.071.071.081.081.0915.350 1.051.061.061.061.0715.600 1.031.031.041.041.0515.850 1.001.001.011.011.0216.100 0.970.970.980.990.9916.350 0.940.950.950.960.9616.600 0.910.920.920.930.9416.850 0.890.890.900.900.9117.100 0.860.870.870.880.8817.350 0.840.840.850.850.8617.600 0.810.820.820.830.8317.850 0.790.790.800.800.8118.100 0.770.770.780.780.7918.350 0.740.750.750.760.7618.600 0.720.730.730.730.7418.850 0.700.700.710.710.7219.100 0.680.680.690.690.6919.350 0.660.660.660.670.6719.600 0.630.640.640.650.6519.850 0.610.620.620.630.6320.100 0.590.600.600.610.6120.350 0.580.580.580.590.5920.600 0.560.560.570.570.5720.850 Page 66 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.550.550.550.550.5621.100 0.550.550.550.550.5521.350 0.550.550.550.550.5521.600 0.550.550.550.550.5521.850 0.540.540.540.540.5422.100 0.540.540.540.540.5422.350 0.540.540.540.540.5422.600 0.540.540.540.540.5422.850 0.540.540.540.540.5423.100 0.540.540.540.540.5423.350 0.540.540.540.540.5423.600 (N/A)0.540.540.540.5423.850 Page 67 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (IN) Return Event: 10 yearsSubsection: Pond Inflow Summary Summary for Hydrograph Addition at 'PO-1' Upstream NodeUpstream Link CM-1<Catchment to Outflow Node> Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 21.3711.9001.285CM-1Flow (From) 21.3711.9001.285PO-1Flow (In) Page 68 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (IN) Return Event: 100 yearsSubsection: Pond Inflow Summary Summary for Hydrograph Addition at 'PO-1' Upstream NodeUpstream Link CM-1<Catchment to Outflow Node> Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 36.5411.9002.251CM-1Flow (From) 36.5411.9002.251PO-1Flow (In) Page 69 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc PO-1 (Time vs. Volume, 100 years (Post-Development 100 year))...17, 18, 19 PO-1 (Time vs. Volume, 10 years (Post-Development 10 year))...14, 15, 16 PO-1 (OUT) (Time vs. Elevation, 100 years (Post-Development 100 year))...11, 12, 13 PO-1 (OUT) (Time vs. Elevation, 10 years (Post-Development 10 year))...8, 9, 10 PO-1 (OUT) (Pond Routed Hydrograph (total out), 100 years (Post-Development 100 year))...65, 66, 67 PO-1 (OUT) (Pond Routed Hydrograph (total out), 10 years (Post-Development 10 year))...62, 63, 64 PO-1 (IN) (Pond Inflow Summary, 100 years (Post-Development 100 year))...69 PO-1 (IN) (Pond Inflow Summary, 10 years (Post-Development 10 year))...68 PO-1 (IN) (Level Pool Pond Routing Summary, 100 years (Post-Development 100 year))...61 PO-1 (IN) (Level Pool Pond Routing Summary, 10 years (Post-Development 10 year))...60 PO-1 (Elevation-Volume-Flow Table (Pond), 100 years (Post-Development 100 year))...59 PO-1 (Elevation-Volume-Flow Table (Pond), 10 years (Post-Development 10 year))...58 PO-1 (Elevation-Area Volume Curve, 100 years (Post-Development 100 year))...21 PO-1 (Elevation-Area Volume Curve, 10 years (Post-Development 10 year))...20 P Outlet-2 (Diverted Hydrograph, 100 years (Post-Development 100 year))...55, 56, 57 Outlet-2 (Diverted Hydrograph, 10 years (Post-Development 10 year))...52, 53, 54 O-3 (Addition Summary, 100 years (Post-Development 100 year))...7 O-3 (Addition Summary, 10 years (Post-Development 10 year))...6 O Master Network Summary...1 M Composite Outlet Structure - 1 (Outlet Input Data, 100 years (Post-Development 100 year))...37, 38, 39, 40 Composite Outlet Structure - 1 (Outlet Input Data, 10 years (Post-Development 10 year))...22, 23, 24, 25 Composite Outlet Structure - 1 (Individual Outlet Curves, 100 years (Post- Development 100 year))...41, 42, 43, 44, 45, 46, 47, 48, 49 Composite Outlet Structure - 1 (Individual Outlet Curves, 10 years (Post- Development 10 year))...26, 27, 28, 29, 30, 31, 32, 33, 34 Composite Outlet Structure - 1 (Composite Rating Curve, 100 years (Post- Development 100 year))...50, 51 Composite Outlet Structure - 1 (Composite Rating Curve, 10 years (Post- Development 10 year))...35, 36 CM-1 (Unit Hydrograph Summary, 100 years (Post-Development 100 year))...4, 5 CM-1 (Unit Hydrograph Summary, 10 years (Post-Development 10 year))...2, 3 C Old Meridian Apartments Index Page 70 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments PO-1 (Time vs. Volume, 100 years (Post-Development 100 year))...17, 18, 19 PO-1 (Time vs. Volume, 10 years (Post-Development 10 year))...14, 15, 16 PO-1 (OUT) (Time vs. Elevation, 100 years (Post-Development 100 year))...11, 12, 13 PO-1 (OUT) (Time vs. Elevation, 10 years (Post-Development 10 year))...8, 9, 10 PO-1 (OUT) (Pond Routed Hydrograph (total out), 100 years (Post-Development 100 year))...65, 66, 67 PO-1 (OUT) (Pond Routed Hydrograph (total out), 10 years (Post-Development 10 year))...62, 63, 64 PO-1 (IN) (Pond Inflow Summary, 100 years (Post-Development 100 year))...69 PO-1 (IN) (Pond Inflow Summary, 10 years (Post-Development 10 year))...68PO-1 (IN) (Level Pool Pond Routing Summary, 100 years (Post-Development 100year))...61PO-1 (IN) (Level Pool Pond Routing Summary, 10 years (Post-Development 10year))...60PO-1 (Elevation-Volume-Flow Table (Pond), 100 years (Post-Development 100year))...59PO-1 (Elevation-Volume-Flow Table (Pond), 10 years (Post-Development 10year))...58PO-1 (Elevation-Area Volume Curve, 100 years (Post-Development 100 year))...21PO-1 (Elevation-Area Volume Curve, 10 years (Post-Development 10 year))...20POutlet-2 (Diverted Hydrograph, 100 years (Post-Development 100 year))...55, 56,57Outlet-2 (Diverted Hydrograph, 10 years (Post-Development 10 year))...52, 53, 54O-3 (Addition Summary, 100 years (Post-Development 100 year))...7O-3 (Addition Summary, 10 years (Post-Development 10 year))...6OMaster Network Summary...1MComposite Outlet Structure - 1 (Outlet Input Data, 100 years (Post-Development100 year))...37, 38, 39, 40Composite Outlet Structure - 1 (Outlet Input Data, 10 years (Post-Development 10year))...22, 23, 24, 25Composite Outlet Structure - 1 (Individual Outlet Curves, 100 years (Post-Development 100 year))...41, 42, 43, 44, 45, 46, 47, 48, 49Composite Outlet Structure - 1 (Individual Outlet Curves, 10 years (Post-Development 10 year))...26, 27, 28, 29, 30, 31, 32, 33, 34Composite Outlet Structure - 1 (Composite Rating Curve, 100 years (Post-Development 100 year))...50, 51Composite Outlet Structure - 1 (Composite Rating Curve, 10 years (Post-Development 10 year))...35, 36CM-1 (Unit Hydrograph Summary, 100 years (Post-Development 100 year))...4, 5CM-1 (Unit Hydrograph Summary, 10 years (Post-Development 10 year))...2, 3C Page 71 of 7127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc APPENDIX H: UNDERGROUND DETENTION CALCULATIONS- 6” ORIFICE 59Pond Inflow Summary, 100 years (Post-Development 100 year) 58Pond Inflow Summary, 10 years (Post-Development 10 year) PO-1 (IN) 55Pond Routed Hydrograph (total out), 100 years (Post- Development 100 year) 52Pond Routed Hydrograph (total out), 10 years (Post- Development 10 year) PO-1 (OUT) 51Level Pool Pond Routing Summary, 100 years (Post- Development 100 year) 50Level Pool Pond Routing Summary, 10 years (Post- Development 10 year) PO-1 (IN) 47Diverted Hydrograph, 100 years (Post-Development 100 year) 44Diverted Hydrograph, 10 years (Post-Development 10 year) Outlet-2 42Composite Rating Curve, 100 years (Post-Development 100 year) 37Individual Outlet Curves, 100 years (Post-Development 100 year) 33Outlet Input Data, 100 years (Post-Development 100 year) 31Composite Rating Curve, 10 years (Post-Development 10 year) 26Individual Outlet Curves, 10 years (Post-Development 10 year) 22Outlet Input Data, 10 years (Post-Development 10 year) 6" Orifice 21Elevation-Area Volume Curve, 100 years (Post-Development 100 year) 20Elevation-Area Volume Curve, 10 years (Post-Development 10 year) PO-1 17Time vs. Volume, 100 years (Post-Development 100 year) 14Time vs. Volume, 10 years (Post-Development 10 year) PO-1 11Time vs. Elevation, 100 years (Post-Development 100 year) 8Time vs. Elevation, 10 years (Post-Development 10 year) PO-1 (OUT) 7Addition Summary, 100 years (Post-Development 100 year) 6Addition Summary, 10 years (Post-Development 10 year) O-3 4Unit Hydrograph Summary, 100 years (Post-Development 100 year) 2Unit Hydrograph Summary, 10 years (Post-Development 10 year) CM-1 1Master Network Summary Table of Contents Table of Contents 59Pond Inflow Summary, 100 years (Post-Development 100 year) 58Pond Inflow Summary, 10 years (Post-Development 10 year) PO-1 (IN) 55Pond Routed Hydrograph (total out), 100 years (Post- Development 100 year) 52Pond Routed Hydrograph (total out), 10 years (Post- Development 10 year) PO-1 (OUT) 51Level Pool Pond Routing Summary, 100 years (Post- Development 100 year) 50Level Pool Pond Routing Summary, 10 years (Post-Development 10 year)PO-1 (IN)47Diverted Hydrograph, 100 years (Post-Development 100 year)44Diverted Hydrograph, 10 years (Post-Development 10 year)Outlet-2 42Composite Rating Curve, 100 years (Post-Development 100year)37Individual Outlet Curves, 100 years (Post-Development 100year)33Outlet Input Data, 100 years (Post-Development 100 year)31Composite Rating Curve, 10 years (Post-Development 10 year)26Individual Outlet Curves, 10 years (Post-Development 10 year)22Outlet Input Data, 10 years (Post-Development 10 year)6" Orifice 21Elevation-Area Volume Curve, 100 years (Post-Development100 year)20Elevation-Area Volume Curve, 10 years (Post-Development 10year)PO-1 17Time vs. Volume, 100 years (Post-Development 100 year)14Time vs. Volume, 10 years (Post-Development 10 year)PO-1 11Time vs. Elevation, 100 years (Post-Development 100 year)8Time vs. Elevation, 10 years (Post-Development 10 year)PO-1 (OUT)7Addition Summary, 100 years (Post-Development 100 year)6Addition Summary, 10 years (Post-Development 10 year)O-3 4Unit Hydrograph Summary, 100 years (Post-Development 100year)2Unit Hydrograph Summary, 10 years (Post-Development 10year)CM-1 1Master Network Summary Old Meridian Apartments Subsection: Master Network Summary Catchments Summary Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel 21.3711.9001.28510Post-Development 10 year CM-1 36.5411.9002.251100Post-Development 100 year CM-1 Node Summary Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel 1.3612.7001.09710Post-Development 10 year O-3 1.9312.9501.789100Post-Development 100 year O-3 Pond Summary Maximum Pond Storage (ac-ft) Maximum Water Surface Elevation (ft) Peak Flow (ft³/s) Time to Peak (hours) Hydrograph Volume (ac-ft) Return Event (years) ScenarioLabel (N/A)(N/A)21.3711.9001.28510Post- Development 10 year PO-1 (IN) 0.719849.551.3612.7001.09710Post- Development 10 year PO-1 (OUT) (N/A)(N/A)36.5411.9002.251100Post- Development 100 year PO-1 (IN) 1.289851.811.9312.9501.789100Post- Development 100 year PO-1 (OUT) Page 1 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: CM-1 Return Event: 10 yearsSubsection: Unit Hydrograph Summary 10 year stormStorm Event years10Return Event hours24.000Duration in3.8Depth hours0.083Time of Concentration (Composite) acres4.430Area (User Defined) hours0.011Computational Time Increment hours11.922Time to Peak (Computed) ft³/s21.74Flow (Peak, Computed) hours0.050Output Increment hours11.900Time to Flow (Peak Interpolated Output) ft³/s21.37Flow (Peak Interpolated Output) Drainage Area 97.000SCS CN (Composite) acres4.430Area (User Defined) in0.3Maximum Retention (Pervious) in0.1Maximum Retention (Pervious, 20 percent) Cumulative Runoff in3.5Cumulative Runoff Depth (Pervious) ac-ft1.286Runoff Volume (Pervious) Hydrograph Volume (Area under Hydrograph curve) ac-ft1.285Volume SCS Unit Hydrograph Parameters hours0.083Time of Concentration (Composite) hours0.011Computational Time Increment 483.432Unit Hydrograph Shape Factor 0.749K Factor 1.670Receding/Rising, Tr/Tp Page 2 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: CM-1 Return Event: 10 yearsSubsection: Unit Hydrograph Summary SCS Unit Hydrograph Parameters ft³/s60.23Unit peak, qp hours0.056Unit peak time, Tp hours0.222Unit receding limb, Tr hours0.278Total unit time, Tb Page 3 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: CM-1 Return Event: 100 yearsSubsection: Unit Hydrograph Summary 100 year stormStorm Event years100Return Event hours24.000Duration in6.5Depth hours0.083Time of Concentration (Composite) acres4.430Area (User Defined) hours0.011Computational Time Increment hours11.922Time to Peak (Computed) ft³/s37.13Flow (Peak, Computed) hours0.050Output Increment hours11.900Time to Flow (Peak Interpolated Output) ft³/s36.54Flow (Peak Interpolated Output) Drainage Area 97.000SCS CN (Composite) acres4.430Area (User Defined) in0.3Maximum Retention (Pervious) in0.1Maximum Retention (Pervious, 20 percent) Cumulative Runoff in6.1Cumulative Runoff Depth (Pervious) ac-ft2.253Runoff Volume (Pervious) Hydrograph Volume (Area under Hydrograph curve) ac-ft2.251Volume SCS Unit Hydrograph Parameters hours0.083Time of Concentration (Composite) hours0.011Computational Time Increment 483.432Unit Hydrograph Shape Factor 0.749K Factor 1.670Receding/Rising, Tr/Tp Page 4 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: CM-1 Return Event: 100 yearsSubsection: Unit Hydrograph Summary SCS Unit Hydrograph Parameters ft³/s60.23Unit peak, qp hours0.056Unit peak time, Tp hours0.222Unit receding limb, Tr hours0.278Total unit time, Tb Page 5 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: O-3 Return Event: 10 yearsSubsection: Addition Summary Summary for Hydrograph Addition at 'O-3' Upstream NodeUpstream Link PO-1Outlet-2 Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 1.3612.7001.097Outlet-2Flow (From) 1.3612.7001.097O-3Flow (In) Page 6 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: O-3 Return Event: 100 yearsSubsection: Addition Summary Summary for Hydrograph Addition at 'O-3' Upstream NodeUpstream Link PO-1Outlet-2 Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 1.9312.9501.789Outlet-2Flow (From) 1.9312.9501.789O-3Flow (In) Page 7 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 846.70846.70846.70846.70846.700.000 846.70846.70846.70846.70846.700.250 846.70846.70846.70846.70846.700.500 846.70846.70846.70846.70846.700.750 846.70846.70846.70846.70846.701.000 846.70846.70846.70846.70846.701.250 846.70846.70846.70846.70846.701.500 846.70846.70846.70846.70846.701.750 846.70846.70846.70846.70846.702.000 846.71846.71846.71846.70846.702.250 846.71846.71846.71846.71846.712.500 846.71846.71846.71846.71846.712.750 846.72846.72846.72846.72846.723.000 846.73846.72846.72846.72846.723.250 846.73846.73846.73846.73846.733.500 846.74846.74846.74846.73846.733.750 846.75846.74846.74846.74846.744.000 846.75846.75846.75846.75846.754.250 846.76846.76846.76846.76846.764.500 846.77846.77846.77846.77846.764.750 846.78846.78846.78846.77846.775.000 846.79846.79846.79846.78846.785.250 846.80846.80846.80846.79846.795.500 846.81846.81846.81846.80846.805.750 846.82846.82846.82846.81846.816.000 846.83846.83846.83846.83846.826.250 846.84846.84846.84846.84846.836.500 846.86846.85846.85846.85846.856.750 846.87846.87846.86846.86846.867.000 846.88846.88846.88846.87846.877.250 846.89846.89846.89846.89846.887.500 846.91846.90846.90846.90846.907.750 846.92846.92846.91846.91846.918.000 846.94846.93846.93846.93846.928.250 846.95846.95846.95846.94846.948.500 846.97846.97846.96846.96846.968.750 847.00846.99846.99846.98846.989.000 847.02847.01847.01847.00847.009.250 847.04847.03847.03847.03847.029.500 847.06847.06847.05847.05847.049.750 Page 8 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 847.09847.09847.08847.07847.0710.000 847.13847.12847.11847.11847.1010.250 847.17847.16847.15847.14847.1410.500 847.22847.21847.20847.19847.1810.750 847.29847.27847.26847.25847.2411.000 847.38847.36847.34847.32847.3111.250 847.63847.54847.48847.43847.4011.500 848.76848.43848.14847.92847.7611.750 849.45849.42849.37849.25849.0412.000 849.54849.53849.51849.50849.4712.250 849.55849.55849.55849.55849.5512.500 849.55849.55849.55849.55849.5512.750 849.52849.53849.53849.54849.5413.000 849.48849.49849.50849.51849.5113.250 849.44849.45849.46849.47849.4813.500 849.39849.40849.41849.42849.4313.750 849.34849.35849.36849.37849.3814.000 849.28849.29849.30849.31849.3214.250 849.22849.23849.25849.26849.2714.500 849.16849.18849.19849.20849.2114.750 849.10849.12849.13849.14849.1515.000 849.04849.06849.07849.08849.0915.250 848.98849.00849.01849.02849.0315.500 848.92848.93848.95848.96848.9715.750 848.86848.87848.88848.90848.9116.000 848.80848.81848.82848.84848.8516.250 848.74848.75848.76848.77848.7916.500 848.68848.69848.70848.71848.7316.750 848.62848.63848.64848.65848.6717.000 848.56848.57848.58848.60848.6117.250 848.51848.52848.53848.54848.5517.500 848.45848.46848.47848.48848.4917.750 848.39848.40848.42848.43848.4418.000 848.34848.35848.36848.37848.3818.250 848.29848.30848.31848.32848.3318.500 848.23848.24848.25848.27848.2818.750 848.18848.19848.20848.21848.2219.000 848.13848.14848.15848.16848.1719.250 848.08848.09848.10848.11848.1219.500 848.03848.04848.05848.06848.0719.750 847.99848.00848.00848.01848.0220.000 Page 9 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 847.94847.95847.96847.97847.9820.250 847.90847.90847.91847.92847.9320.500 847.85847.86847.87847.88847.8920.750 847.81847.82847.83847.84847.8421.000 847.77847.78847.79847.80847.8021.250 847.73847.74847.75847.76847.7621.500 847.70847.70847.71847.72847.7321.750 847.66847.67847.67847.68847.6922.000 847.63847.63847.64847.65847.6522.250 847.59847.60847.61847.61847.6222.500 847.56847.57847.57847.58847.5922.750 847.53847.54847.54847.55847.5623.000 847.50847.51847.51847.52847.5323.250 847.48847.48847.49847.49847.5023.500 847.45847.46847.46847.47847.4723.750 (N/A)(N/A)(N/A)(N/A)847.4524.000 Page 10 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 846.70846.70846.70846.70846.700.000 846.70846.70846.70846.70846.700.250 846.70846.70846.70846.70846.700.500 846.70846.70846.70846.70846.700.750 846.70846.70846.70846.70846.701.000 846.70846.70846.70846.70846.701.250 846.71846.71846.71846.71846.711.500 846.72846.72846.71846.71846.711.750 846.73846.73846.72846.72846.722.000 846.74846.74846.73846.73846.732.250 846.75846.75846.75846.74846.742.500 846.76846.76846.76846.75846.752.750 846.78846.77846.77846.77846.773.000 846.79846.79846.78846.78846.783.250 846.81846.80846.80846.80846.793.500 846.82846.82846.81846.81846.813.750 846.84846.83846.83846.83846.824.000 846.85846.85846.85846.84846.844.250 846.87846.87846.86846.86846.864.500 846.89846.88846.88846.88846.874.750 846.91846.90846.90846.90846.895.000 846.93846.92846.92846.91846.915.250 846.94846.94846.94846.93846.935.500 846.96846.96846.96846.95846.955.750 846.98846.98846.98846.97846.976.000 847.01847.00847.00846.99846.996.250 847.03847.02847.02847.01847.016.500 847.05847.04847.04847.03847.036.750 847.07847.06847.06847.06847.057.000 847.09847.09847.08847.08847.077.250 847.11847.11847.10847.10847.107.500 847.13847.13847.13847.12847.127.750 847.16847.15847.15847.14847.148.000 847.18847.18847.17847.17847.168.250 847.22847.21847.20847.20847.198.500 847.25847.24847.24847.23847.228.750 847.29847.28847.27847.27847.269.000 847.33847.32847.31847.30847.309.250 847.36847.36847.35847.34847.339.500 847.41847.40847.39847.38847.379.750 Page 11 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 847.46847.45847.44847.43847.4210.000 847.52847.51847.49847.48847.4710.250 847.59847.58847.56847.55847.5310.500 847.69847.67847.65847.63847.6110.750 847.80847.78847.75847.73847.7111.000 847.97847.93847.89847.86847.8311.250 848.40848.24848.13848.05848.0011.500 850.34849.79849.28848.90848.6211.750 851.56851.50851.41851.20850.8412.000 851.74851.71851.68851.65851.6112.250 851.80851.79851.78851.77851.7612.500 851.81851.81851.81851.81851.8012.750 851.80851.81851.81851.81851.8113.000 851.77851.78851.79851.79851.8013.250 851.73851.74851.75851.75851.7613.500 851.67851.68851.69851.70851.7213.750 851.60851.62851.63851.64851.6614.000 851.53851.55851.56851.57851.5914.250 851.46851.47851.49851.50851.5214.500 851.38851.40851.41851.43851.4414.750 851.30851.32851.34851.35851.3715.000 851.22851.24851.26851.27851.2915.250 851.14851.16851.17851.19851.2115.500 851.05851.07851.09851.10851.1215.750 850.96850.98851.00851.02851.0316.000 850.88850.89850.91850.93850.9516.250 850.79850.81850.82850.84850.8616.500 850.70850.72850.74850.75850.7716.750 850.61850.63850.65850.66850.6817.000 850.53850.54850.56850.58850.5917.250 850.44850.46850.47850.49850.5117.500 850.35850.37850.39850.40850.4217.750 850.27850.28850.30850.32850.3318.000 850.18850.20850.21850.23850.2518.250 850.09850.11850.13850.15850.1618.500 850.01850.03850.04850.06850.0818.750 849.92849.94849.96849.98849.9919.000 849.84849.86849.87849.89849.9119.250 849.76849.77849.79849.81849.8219.500 849.67849.69849.71849.72849.7419.750 849.59849.61849.62849.64849.6620.000 Page 12 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Time vs. Elevation Time vs. Elevation (ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Elevation (ft) Time (hours) 849.51849.53849.54849.56849.5720.250 849.43849.45849.46849.48849.4920.500 849.35849.37849.38849.40849.4220.750 849.28849.29849.31849.32849.3421.000 849.20849.22849.23849.25849.2621.250 849.13849.14849.16849.17849.1921.500 849.06849.07849.09849.10849.1221.750 848.99849.00849.02849.03849.0422.000 848.92848.93848.95848.96848.9822.250 848.85848.87848.88848.89848.9122.500 848.79848.80848.82848.83848.8422.750 848.73848.74848.75848.76848.7823.000 848.66848.68848.69848.70848.7123.250 848.60848.62848.63848.64848.6523.500 848.55848.56848.57848.58848.5923.750 (N/A)(N/A)(N/A)(N/A)848.5324.000 Page 13 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.0000.0000.0000.0000.0000.000 0.0000.0000.0000.0000.0000.250 0.0000.0000.0000.0000.0000.500 0.0000.0000.0000.0000.0000.750 0.0000.0000.0000.0000.0001.000 0.0000.0000.0000.0000.0001.250 0.0000.0000.0000.0000.0001.500 0.0000.0000.0000.0000.0001.750 0.0010.0010.0010.0010.0002.000 0.0020.0010.0010.0010.0012.250 0.0030.0020.0020.0020.0022.500 0.0040.0030.0030.0030.0032.750 0.0050.0050.0040.0040.0043.000 0.0060.0060.0060.0060.0053.250 0.0080.0080.0070.0070.0073.500 0.0100.0090.0090.0090.0083.750 0.0120.0110.0110.0100.0104.000 0.0140.0130.0130.0120.0124.250 0.0160.0150.0150.0140.0144.500 0.0180.0170.0170.0170.0164.750 0.0200.0200.0190.0190.0185.000 0.0230.0220.0220.0210.0215.250 0.0250.0250.0240.0240.0235.500 0.0280.0270.0270.0260.0265.750 0.0310.0300.0290.0290.0286.000 0.0330.0330.0320.0320.0316.250 0.0360.0360.0350.0350.0346.500 0.0390.0390.0380.0380.0376.750 0.0420.0420.0410.0410.0407.000 0.0460.0450.0440.0440.0437.250 0.0490.0480.0470.0470.0467.500 0.0520.0510.0510.0500.0497.750 0.0550.0550.0540.0530.0538.000 0.0590.0580.0580.0570.0568.250 0.0640.0630.0620.0610.0608.500 0.0690.0680.0670.0660.0658.750 0.0740.0730.0720.0710.0709.000 0.0800.0790.0780.0770.0769.250 0.0850.0840.0830.0820.0819.500 0.0920.0900.0890.0880.0879.750 Page 14 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.0990.0970.0960.0940.09310.000 0.1080.1060.1040.1020.10110.250 0.1190.1160.1140.1120.11010.500 0.1320.1290.1260.1240.12110.750 0.1490.1450.1410.1380.13511.000 0.1720.1670.1620.1570.15311.250 0.2350.2110.1950.1850.17711.500 0.5180.4370.3630.3080.26611.750 0.6930.6850.6730.6430.59012.000 0.7150.7120.7090.7040.69912.250 0.7190.7190.7190.7180.71712.500 0.7170.7180.7190.7190.71912.750 0.7110.7120.7140.7150.71613.000 0.7020.7040.7060.7070.70913.250 0.6910.6930.6950.6980.70013.500 0.6780.6810.6830.6860.68813.750 0.6640.6670.6700.6730.67514.000 0.6500.6530.6560.6590.66114.250 0.6360.6390.6410.6440.64714.500 0.6210.6240.6270.6300.63314.750 0.6060.6090.6120.6150.61815.000 0.5910.5940.5970.6000.60315.250 0.5760.5790.5820.5850.58815.500 0.5600.5630.5660.5690.57215.750 0.5440.5470.5510.5540.55716.000 0.5290.5320.5350.5380.54116.250 0.5140.5170.5200.5230.52616.500 0.4990.5020.5050.5080.51116.750 0.4840.4870.4900.4930.49617.000 0.4690.4720.4750.4780.48117.250 0.4550.4580.4610.4630.46617.500 0.4410.4440.4460.4490.45217.750 0.4270.4300.4320.4350.43818.000 0.4130.4160.4190.4210.42418.250 0.4000.4020.4050.4080.41118.500 0.3870.3890.3920.3940.39718.750 0.3740.3760.3790.3810.38419.000 0.3610.3630.3660.3680.37119.250 0.3480.3510.3530.3560.35819.500 0.3360.3380.3410.3430.34619.750 0.3240.3260.3290.3310.33420.000 Page 15 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.3120.3150.3170.3190.32220.250 0.3010.3030.3060.3080.31020.500 0.2900.2930.2950.2970.29920.750 0.2800.2820.2840.2860.28821.000 0.2700.2720.2740.2760.27821.250 0.2600.2620.2640.2660.26821.500 0.2510.2530.2550.2560.25821.750 0.2420.2440.2450.2470.24922.000 0.2330.2350.2370.2380.24022.250 0.2250.2270.2280.2300.23222.500 0.2170.2190.2200.2220.22322.750 0.2100.2110.2130.2140.21623.000 0.2020.2040.2050.2070.20823.250 0.1960.1970.1980.2000.20123.500 0.1890.1900.1920.1930.19423.750 (N/A)(N/A)(N/A)(N/A)0.18824.000 Page 16 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.0000.0000.0000.0000.0000.000 0.0000.0000.0000.0000.0000.250 0.0000.0000.0000.0000.0000.500 0.0000.0000.0000.0000.0000.750 0.0000.0000.0000.0000.0001.000 0.0010.0010.0010.0010.0001.250 0.0030.0020.0020.0020.0011.500 0.0050.0040.0040.0030.0031.750 0.0070.0060.0060.0050.0052.000 0.0100.0090.0080.0080.0072.250 0.0130.0120.0110.0110.0102.500 0.0160.0150.0140.0140.0132.750 0.0190.0190.0180.0170.0163.000 0.0230.0220.0210.0210.0203.250 0.0270.0260.0250.0240.0243.500 0.0300.0300.0290.0280.0273.750 0.0340.0340.0330.0320.0314.000 0.0390.0380.0370.0360.0354.250 0.0430.0420.0410.0400.0394.500 0.0470.0460.0460.0450.0444.750 0.0520.0510.0500.0490.0485.000 0.0570.0560.0550.0540.0535.250 0.0620.0610.0600.0590.0585.500 0.0670.0660.0650.0640.0635.750 0.0720.0710.0700.0690.0686.000 0.0770.0760.0750.0740.0736.250 0.0820.0810.0800.0790.0786.500 0.0880.0870.0850.0840.0836.750 0.0930.0920.0910.0900.0897.000 0.0980.0970.0960.0950.0947.250 0.1040.1030.1020.1010.1007.500 0.1100.1080.1070.1060.1057.750 0.1150.1140.1130.1120.1118.000 0.1220.1210.1190.1180.1178.250 0.1300.1280.1270.1250.1248.500 0.1390.1370.1350.1330.1328.750 0.1480.1470.1450.1430.1419.000 0.1580.1560.1540.1520.1509.250 0.1670.1650.1630.1620.1609.500 0.1780.1760.1740.1720.1699.750 Page 17 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.1910.1880.1860.1830.18110.000 0.2070.2030.2000.1970.19410.250 0.2250.2210.2180.2140.21010.500 0.2490.2440.2390.2340.23010.750 0.2780.2710.2650.2590.25411.000 0.3190.3100.3010.2930.28511.250 0.4290.3880.3600.3410.32911.500 0.9180.7790.6510.5560.48411.750 1.2241.2091.1861.1351.04212.000 1.2701.2631.2561.2471.23612.250 1.2851.2831.2811.2781.27512.500 1.2891.2891.2881.2881.28612.750 1.2861.2871.2881.2881.28913.000 1.2781.2801.2821.2831.28513.250 1.2661.2691.2711.2741.27613.500 1.2521.2551.2581.2611.26413.750 1.2351.2391.2421.2461.24914.000 1.2181.2211.2251.2281.23214.250 1.1991.2031.2071.2101.21414.500 1.1801.1841.1881.1921.19514.750 1.1601.1641.1681.1721.17615.000 1.1401.1441.1481.1521.15615.250 1.1191.1231.1271.1311.13615.500 1.0971.1011.1061.1101.11415.750 1.0751.0791.0841.0881.09216.000 1.0521.0571.0611.0661.07016.250 1.0301.0351.0391.0431.04816.500 1.0081.0121.0171.0211.02616.750 0.9860.9900.9950.9991.00417.000 0.9640.9680.9730.9770.98117.250 0.9420.9460.9510.9550.96017.500 0.9200.9250.9290.9330.93817.750 0.8990.9030.9070.9120.91618.000 0.8770.8810.8860.8900.89418.250 0.8550.8600.8640.8680.87318.500 0.8340.8380.8430.8470.85118.750 0.8130.8170.8210.8250.83019.000 0.7910.7960.8000.8040.80819.250 0.7700.7750.7790.7830.78719.500 0.7490.7540.7580.7620.76619.750 0.7290.7330.7370.7410.74520.000 Page 18 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Time vs. Volume Time vs. Volume (ac-ft) Output Time increment = 0.050 hours Time on left represents time for first value in each row. Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Volume (ac-ft) Time (hours) 0.7080.7120.7160.7200.72420.250 0.6880.6920.6960.7000.70420.500 0.6690.6720.6760.6800.68420.750 0.6490.6530.6570.6610.66521.000 0.6310.6340.6380.6420.64621.250 0.6120.6160.6200.6230.62721.500 0.5940.5980.6010.6050.60921.750 0.5770.5800.5840.5870.59122.000 0.5600.5630.5660.5700.57322.250 0.5430.5460.5500.5530.55622.500 0.5270.5300.5330.5360.54022.750 0.5110.5140.5170.5200.52323.000 0.4950.4980.5010.5040.50723.250 0.4800.4830.4860.4890.49223.500 0.4650.4680.4710.4740.47723.750 (N/A)(N/A)(N/A)(N/A)0.46224.000 Page 19 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 Return Event: 10 yearsSubsection: Elevation-Area Volume Curve Volume (Total) (ac-ft) Volume (ac-ft) A1+A2+sqr(A1*A 2) (acres) Area (acres) Planimeter (ft²) Elevation (ft) 0.0000.0000.0000.2520.0846.70 1.7641.7640.7560.2520.0853.70 Page 20 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 Return Event: 100 yearsSubsection: Elevation-Area Volume Curve Volume (Total) (ac-ft) Volume (ac-ft) A1+A2+sqr(A1*A 2) (acres) Area (acres) Planimeter (ft²) Elevation (ft) 0.0000.0000.0000.2520.0846.70 1.7641.7640.7560.2520.0853.70 Page 21 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Outlet Input Data Requested Pond Water Surface Elevations ft846.70Minimum (Headwater) ft0.50Increment (Headwater) ft853.70Maximum (Headwater) Outlet Connectivity E2 (ft) E1 (ft) OutfallDirectionOutlet IDStructure Type 853.70846.70Culvert - 1ForwardOrifice - 1Orifice-Circular 853.70852.20Culvert - 1ForwardOrifice - 2Orifice-Circular 853.70853.20Culvert - 1ForwardOrifice - 3Orifice-Circular 853.70853.20Culvert - 1ForwardWeir - 1Rectangular Weir 853.70846.70TWForwardCulvert - 1Culvert-Circular (N/A)(N/A)TailwaterTailwater Settings Page 22 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Outlet Input Data Structure ID: Culvert - 1 Structure Type: Culvert-Circular 1Number of Barrels in12.0Diameter ft20.00Length ft20.00Length (Computed Barrel) ft/ft0.003Slope (Computed) Outlet Control Data 0.013Manning's n 0.500Ke 0.031Kb 0.500Kr ft0.00Convergence Tolerance Inlet Control Data Form 1Equation Form 0.0018K 2.0000M 0.0292C 0.7400Y 1.061T1 ratio (HW/D) 1.206T2 ratio (HW/D) -0.500Slope Correction Factor Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... ft847.76T1 Elevation ft³/s2.75T1 Flow ft847.91T2 Elevation ft³/s3.14T2 Flow Page 23 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Outlet Input Data Structure ID: Orifice - 1 Structure Type: Orifice-Circular 1Number of Openings ft846.70Elevation in6.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Weir - 1 Structure Type: Rectangular Weir 1Number of Openings ft853.20Elevation ft4.00Weir Length (ft^0.5)/s3.00Weir Coefficient Structure ID: Orifice - 2 Structure Type: Orifice-Circular 1Number of Openings ft852.20Elevation in6.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Orifice - 3 Structure Type: Orifice-Circular 1Number of Openings ft853.20Elevation in8.0Orifice Diameter 0.600Orifice Coefficient Structure ID: TW Structure Type: TW Setup, DS Channel Free OutfallTailwater Type Convergence Tolerances 30Maximum Iterations ft0.01Tailwater Tolerance (Minimum) ft0.50Tailwater Tolerance (Maximum) ft0.01Headwater Tolerance (Minimum) ft0.50Headwater Tolerance (Maximum) ft³/s0.001Flow Tolerance (Minimum) Page 24 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Outlet Input Data Convergence Tolerances ft³/s10.000Flow Tolerance (Maximum) Page 25 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 26 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 27 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 28 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 29 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 30 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Composite Rating Curve Composite Outflow Summary Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.00846.70 0.00(N/A)0.34847.20 0.00(N/A)0.65847.70 0.00(N/A)0.89848.20 0.00(N/A)1.08848.70 0.00(N/A)1.25849.20 0.00(N/A)1.40849.70 0.00(N/A)1.54850.20 0.00(N/A)1.67850.70 0.00(N/A)1.79851.20 0.00(N/A)1.90851.70 0.00(N/A)2.01852.20 0.00(N/A)2.55852.70 0.00(N/A)2.98853.20 0.00(N/A)7.52853.70 Contributing Structures (no Q: Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Page 31 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: 6" Orifice Return Event: 10 yearsSubsection: Composite Rating Curve Composite Outflow Summary Contributing Structures Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1 Page 32 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Outlet Input Data Requested Pond Water Surface Elevations ft846.70Minimum (Headwater) ft0.50Increment (Headwater) ft853.70Maximum (Headwater) Outlet Connectivity E2 (ft) E1 (ft) OutfallDirectionOutlet IDStructure Type 853.70846.70Culvert - 1ForwardOrifice - 1Orifice-Circular 853.70852.20Culvert - 1ForwardOrifice - 2Orifice-Circular 853.70853.20Culvert - 1ForwardOrifice - 3Orifice-Circular 853.70853.20Culvert - 1ForwardWeir - 1Rectangular Weir 853.70846.70TWForwardCulvert - 1Culvert-Circular (N/A)(N/A)TailwaterTailwater Settings Page 33 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Outlet Input Data Structure ID: Culvert - 1 Structure Type: Culvert-Circular 1Number of Barrels in12.0Diameter ft20.00Length ft20.00Length (Computed Barrel) ft/ft0.003Slope (Computed) Outlet Control Data 0.013Manning's n 0.500Ke 0.031Kb 0.500Kr ft0.00Convergence Tolerance Inlet Control Data Form 1Equation Form 0.0018K 2.0000M 0.0292C 0.7400Y 1.061T1 ratio (HW/D) 1.206T2 ratio (HW/D) -0.500Slope Correction Factor Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... ft847.76T1 Elevation ft³/s2.75T1 Flow ft847.91T2 Elevation ft³/s3.14T2 Flow Page 34 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Outlet Input Data Structure ID: Orifice - 1 Structure Type: Orifice-Circular 1Number of Openings ft846.70Elevation in6.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Weir - 1 Structure Type: Rectangular Weir 1Number of Openings ft853.20Elevation ft4.00Weir Length (ft^0.5)/s3.00Weir Coefficient Structure ID: Orifice - 2 Structure Type: Orifice-Circular 1Number of Openings ft852.20Elevation in6.0Orifice Diameter 0.600Orifice Coefficient Structure ID: Orifice - 3 Structure Type: Orifice-Circular 1Number of Openings ft853.20Elevation in8.0Orifice Diameter 0.600Orifice Coefficient Structure ID: TW Structure Type: TW Setup, DS Channel Free OutfallTailwater Type Convergence Tolerances 30Maximum Iterations ft0.01Tailwater Tolerance (Minimum) ft0.50Tailwater Tolerance (Maximum) ft0.01Headwater Tolerance (Minimum) ft0.50Headwater Tolerance (Maximum) ft³/s0.001Flow Tolerance (Minimum) Page 35 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Outlet Input Data Convergence Tolerances ft³/s10.000Flow Tolerance (Maximum) Page 36 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 37 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 38 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 39 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 40 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Individual Outlet Curves RATING TABLE FOR ONE OUTLET TYPE Structure ID = () --------------------------------------- Upstream ID = Downstream ID = Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) Contributing Structures Page 41 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Composite Rating Curve Composite Outflow Summary Convergence Error (ft) Tailwater Elevation (ft) Flow (ft³/s) Water Surface Elevation (ft) 0.00(N/A)0.00846.70 0.00(N/A)0.34847.20 0.00(N/A)0.65847.70 0.00(N/A)0.89848.20 0.00(N/A)1.08848.70 0.00(N/A)1.25849.20 0.00(N/A)1.40849.70 0.00(N/A)1.54850.20 0.00(N/A)1.67850.70 0.00(N/A)1.79851.20 0.00(N/A)1.90851.70 0.00(N/A)2.01852.20 0.00(N/A)2.55852.70 0.00(N/A)2.98853.20 0.00(N/A)7.52853.70 Contributing Structures (no Q: Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Page 42 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: 6" Orifice Return Event: 100 yearsSubsection: Composite Rating Curve Composite Outflow Summary Contributing Structures Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Culvert - 1 (no Q: Orifice - 2,Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Culvert - 1 (no Q: Orifice - 3,Weir - 1) Orifice - 1,Orifice - 2,Orifice - 3,Weir - 1,Culvert - 1 Page 43 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Outlet-2 Return Event: 10 yearsSubsection: Diverted Hydrograph ft³/s1.36Peak Discharge hours12.700Time to Peak ac-ft1.097Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.950 0.000.000.000.000.002.200 0.010.010.010.000.002.450 0.010.010.010.010.012.700 0.010.010.010.010.012.950 0.020.020.020.010.013.200 0.020.020.020.020.023.450 0.030.020.020.020.023.700 0.030.030.030.030.033.950 0.040.030.030.030.034.200 0.040.040.040.040.044.450 0.050.050.040.040.044.700 0.050.050.050.050.054.950 0.060.060.060.060.055.200 0.070.070.060.060.065.450 0.070.070.070.070.075.700 0.080.080.080.080.085.950 0.090.090.090.080.086.200 0.100.100.090.090.096.450 0.110.100.100.100.106.700 0.110.110.110.110.116.950 0.120.120.120.120.127.200 0.130.130.130.130.127.450 0.140.140.140.130.137.700 0.150.150.140.140.147.950 0.160.160.150.150.158.200 0.170.170.170.160.168.450 0.180.180.180.180.178.700 0.200.200.190.190.198.950 0.210.210.210.210.209.200 0.230.230.220.220.229.450 0.250.240.240.240.239.700 0.260.260.260.250.259.950 0.290.280.280.270.2710.200 0.320.310.300.300.2910.450 0.350.340.340.330.3210.700 0.390.380.370.360.3610.950 Page 44 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Outlet-2 Return Event: 10 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.440.430.420.410.4011.200 0.550.510.490.470.4611.450 0.980.860.760.680.6111.700 1.321.301.271.201.1011.950 1.351.351.341.341.3312.200 1.361.361.361.361.3612.450 1.361.361.361.361.3612.700 1.351.351.351.361.3612.950 1.341.341.351.351.3513.200 1.331.331.331.341.3413.450 1.311.321.321.321.3313.700 1.301.301.301.311.3113.950 1.281.281.291.291.2914.200 1.261.271.271.271.2814.450 1.241.251.251.261.2614.700 1.221.231.231.241.2414.950 1.201.211.211.221.2215.200 1.181.191.191.201.2015.450 1.161.171.171.181.1815.700 1.141.151.151.161.1615.950 1.121.131.131.131.1416.200 1.101.111.111.111.1216.450 1.081.091.091.091.1016.700 1.061.061.071.071.0816.950 1.041.041.041.051.0517.200 1.011.021.021.031.0317.450 0.991.001.001.001.0117.700 0.970.970.980.980.9917.950 0.950.950.960.960.9718.200 0.930.930.940.940.9518.450 0.910.910.920.920.9218.700 0.890.890.900.900.9018.950 0.860.870.870.880.8819.200 0.840.840.850.850.8619.450 0.820.820.830.830.8419.700 0.790.800.800.810.8119.950 0.770.780.780.790.7920.200 0.750.760.760.760.7720.450 0.730.730.740.740.7520.700 0.710.720.720.720.7320.950 0.690.700.700.700.7121.200 0.670.680.680.680.6921.450 Page 45 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: Outlet-2 Return Event: 10 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.660.660.660.670.6721.700 0.630.640.640.650.6521.950 0.610.620.620.630.6322.200 0.590.600.600.600.6122.450 0.570.580.580.580.5922.700 0.550.560.560.560.5722.950 0.540.540.540.550.5523.200 0.520.520.530.530.5323.450 0.500.510.510.510.5123.700 (N/A)(N/A)(N/A)0.500.5023.950 Page 46 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Outlet-2 Return Event: 100 yearsSubsection: Diverted Hydrograph ft³/s1.93Peak Discharge hours12.950Time to Peak ac-ft1.789Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.200 0.010.010.000.000.001.450 0.010.010.010.010.011.700 0.020.020.010.010.011.950 0.020.020.020.020.022.200 0.030.030.030.030.032.450 0.040.040.040.040.032.700 0.050.050.050.040.042.950 0.060.060.060.050.053.200 0.070.070.070.060.063.450 0.080.080.080.070.073.700 0.090.090.090.080.083.950 0.100.100.100.100.094.200 0.110.110.110.110.104.450 0.130.120.120.120.124.700 0.140.140.130.130.134.950 0.150.150.150.140.145.200 0.160.160.160.160.155.450 0.180.180.170.170.175.700 0.190.190.190.180.185.950 0.210.200.200.200.206.200 0.220.220.210.210.216.450 0.240.230.230.230.226.700 0.250.250.240.240.246.950 0.260.260.260.260.257.200 0.280.280.270.270.277.450 0.290.290.290.290.287.700 0.310.310.300.300.307.950 0.330.320.320.320.318.200 0.350.340.340.340.338.450 0.370.370.360.360.358.700 0.390.390.380.380.378.950 0.420.410.410.400.409.200 0.440.440.430.430.429.450 0.470.460.460.450.449.700 0.500.490.480.480.479.950 0.530.530.520.510.5010.200 Page 47 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Outlet-2 Return Event: 100 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.580.570.560.550.5410.450 0.630.620.610.600.5910.700 0.690.680.670.660.6510.950 0.760.750.730.720.7011.200 0.910.860.820.800.7811.450 1.431.281.151.050.9711.700 1.861.831.791.701.5811.950 1.901.901.891.881.8712.200 1.921.921.921.911.9112.450 1.931.931.931.921.9212.700 1.921.931.931.931.9312.950 1.921.921.921.921.9213.200 1.911.911.911.921.9213.450 1.901.901.901.901.9113.700 1.881.891.891.891.8913.950 1.871.871.871.881.8814.200 1.851.851.861.861.8614.450 1.831.841.841.841.8514.700 1.811.821.821.831.8314.950 1.801.801.801.811.8115.200 1.781.781.781.791.7915.450 1.761.761.761.771.7715.700 1.741.741.741.751.7515.950 1.711.721.721.731.7316.200 1.691.701.701.711.7116.450 1.671.681.681.691.6916.700 1.651.661.661.661.6716.950 1.631.631.641.641.6517.200 1.611.611.611.621.6217.450 1.581.591.591.601.6017.700 1.561.571.571.571.5817.950 1.541.541.551.551.5618.200 1.521.521.531.531.5318.450 1.491.501.501.511.5118.700 1.471.471.481.481.4918.950 1.451.451.461.461.4719.200 1.421.431.431.441.4419.450 1.401.411.411.421.4219.700 1.381.381.391.391.4019.950 1.351.361.361.371.3720.200 1.331.331.341.341.3520.450 1.301.311.311.321.3220.700 Page 48 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: Outlet-2 Return Event: 100 yearsSubsection: Diverted Hydrograph HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 1.281.291.291.291.3020.950 1.261.261.271.271.2821.200 1.231.241.241.251.2521.450 1.211.211.221.221.2321.700 1.191.191.201.201.2121.950 1.161.171.171.181.1822.200 1.141.151.151.151.1622.450 1.121.121.131.131.1422.700 1.101.101.111.111.1122.950 1.081.081.091.091.0923.200 1.051.061.061.071.0723.450 1.031.031.041.041.0523.700 (N/A)(N/A)(N/A)1.021.0223.950 Page 49 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (IN) Return Event: 10 yearsSubsection: Level Pool Pond Routing Summary Infiltration No InfiltrationInfiltration Method (Computed) Initial Conditions ft846.70Elevation (Water Surface, Initial) ac-ft0.000Volume (Initial) ft³/s0.00Flow (Initial Outlet) ft³/s0.00Flow (Initial Infiltration) ft³/s0.00Flow (Initial, Total) hours0.050Time Increment Inflow/Outflow Hydrograph Summary ft³/s21.37Flow (Peak In)hours11.900Time to Peak (Flow, In) ft³/s1.36Flow (Peak Outlet)hours12.700Time to Peak (Flow, Outlet) ft849.55Elevation (Water Surface, Peak) ac-ft0.719Volume (Peak) Mass Balance (ac-ft) ac-ft0.000Volume (Initial) ac-ft1.285Volume (Total Inflow) ac-ft0.000Volume (Total Infiltration) ac-ft1.097Volume (Total Outlet Outflow) ac-ft0.186Volume (Retained) ac-ft-0.002Volume (Unrouted) %0.2Error (Mass Balance) Page 50 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (IN) Return Event: 100 yearsSubsection: Level Pool Pond Routing Summary Infiltration No InfiltrationInfiltration Method (Computed) Initial Conditions ft846.70Elevation (Water Surface, Initial) ac-ft0.000Volume (Initial) ft³/s0.00Flow (Initial Outlet) ft³/s0.00Flow (Initial Infiltration) ft³/s0.00Flow (Initial, Total) hours0.050Time Increment Inflow/Outflow Hydrograph Summary ft³/s36.54Flow (Peak In)hours11.900Time to Peak (Flow, In) ft³/s1.93Flow (Peak Outlet)hours12.950Time to Peak (Flow, Outlet) ft851.81Elevation (Water Surface, Peak) ac-ft1.289Volume (Peak) Mass Balance (ac-ft) ac-ft0.000Volume (Initial) ac-ft2.251Volume (Total Inflow) ac-ft0.000Volume (Total Infiltration) ac-ft1.789Volume (Total Outlet Outflow) ac-ft0.458Volume (Retained) ac-ft-0.004Volume (Unrouted) %0.2Error (Mass Balance) Page 51 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Pond Routed Hydrograph (total out) ft³/s1.36Peak Discharge hours12.700Time to Peak ac-ft1.097Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.950 0.000.000.000.000.002.200 0.010.010.010.000.002.450 0.010.010.010.010.012.700 0.010.010.010.010.012.950 0.020.020.020.010.013.200 0.020.020.020.020.023.450 0.030.020.020.020.023.700 0.030.030.030.030.033.950 0.040.030.030.030.034.200 0.040.040.040.040.044.450 0.050.050.040.040.044.700 0.050.050.050.050.054.950 0.060.060.060.060.055.200 0.070.070.060.060.065.450 0.070.070.070.070.075.700 0.080.080.080.080.085.950 0.090.090.090.080.086.200 0.100.100.090.090.096.450 0.110.100.100.100.106.700 0.110.110.110.110.116.950 0.120.120.120.120.127.200 0.130.130.130.130.127.450 0.140.140.140.130.137.700 0.150.150.140.140.147.950 0.160.160.150.150.158.200 0.170.170.170.160.168.450 0.180.180.180.180.178.700 0.200.200.190.190.198.950 0.210.210.210.210.209.200 0.230.230.220.220.229.450 0.250.240.240.240.239.700 0.260.260.260.250.259.950 0.290.280.280.270.2710.200 0.320.310.300.300.2910.450 0.350.340.340.330.3210.700 0.390.380.370.360.3610.950 Page 52 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.440.430.420.410.4011.200 0.550.510.490.470.4611.450 0.980.860.760.680.6111.700 1.321.301.271.201.1011.950 1.351.351.341.341.3312.200 1.361.361.361.361.3612.450 1.361.361.361.361.3612.700 1.351.351.351.361.3612.950 1.341.341.351.351.3513.200 1.331.331.331.341.3413.450 1.311.321.321.321.3313.700 1.301.301.301.311.3113.950 1.281.281.291.291.2914.200 1.261.271.271.271.2814.450 1.241.251.251.261.2614.700 1.221.231.231.241.2414.950 1.201.211.211.221.2215.200 1.181.191.191.201.2015.450 1.161.171.171.181.1815.700 1.141.151.151.161.1615.950 1.121.131.131.131.1416.200 1.101.111.111.111.1216.450 1.081.091.091.091.1016.700 1.061.061.071.071.0816.950 1.041.041.041.051.0517.200 1.011.021.021.031.0317.450 0.991.001.001.001.0117.700 0.970.970.980.980.9917.950 0.950.950.960.960.9718.200 0.930.930.940.940.9518.450 0.910.910.920.920.9218.700 0.890.890.900.900.9018.950 0.860.870.870.880.8819.200 0.840.840.850.850.8619.450 0.820.820.830.830.8419.700 0.790.800.800.810.8119.950 0.770.780.780.790.7920.200 0.750.760.760.760.7720.450 0.730.730.740.740.7520.700 0.710.720.720.720.7320.950 0.690.700.700.700.7121.200 0.670.680.680.680.6921.450 Page 53 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (OUT) Return Event: 10 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.660.660.660.670.6721.700 0.630.640.640.650.6521.950 0.610.620.620.630.6322.200 0.590.600.600.600.6122.450 0.570.580.580.580.5922.700 0.550.560.560.560.5722.950 0.540.540.540.550.5523.200 0.520.520.530.530.5323.450 0.500.510.510.510.5123.700 (N/A)(N/A)(N/A)0.500.5023.950 Page 54 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Pond Routed Hydrograph (total out) ft³/s1.93Peak Discharge hours12.950Time to Peak ac-ft1.789Hydrograph Volume HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.000.000.000.000.001.200 0.010.010.000.000.001.450 0.010.010.010.010.011.700 0.020.020.010.010.011.950 0.020.020.020.020.022.200 0.030.030.030.030.032.450 0.040.040.040.040.032.700 0.050.050.050.040.042.950 0.060.060.060.050.053.200 0.070.070.070.060.063.450 0.080.080.080.070.073.700 0.090.090.090.080.083.950 0.100.100.100.100.094.200 0.110.110.110.110.104.450 0.130.120.120.120.124.700 0.140.140.130.130.134.950 0.150.150.150.140.145.200 0.160.160.160.160.155.450 0.180.180.170.170.175.700 0.190.190.190.180.185.950 0.210.200.200.200.206.200 0.220.220.210.210.216.450 0.240.230.230.230.226.700 0.250.250.240.240.246.950 0.260.260.260.260.257.200 0.280.280.270.270.277.450 0.290.290.290.290.287.700 0.310.310.300.300.307.950 0.330.320.320.320.318.200 0.350.340.340.340.338.450 0.370.370.360.360.358.700 0.390.390.380.380.378.950 0.420.410.410.400.409.200 0.440.440.430.430.429.450 0.470.460.460.450.449.700 0.500.490.480.480.479.950 0.530.530.520.510.5010.200 Page 55 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 0.580.570.560.550.5410.450 0.630.620.610.600.5910.700 0.690.680.670.660.6510.950 0.760.750.730.720.7011.200 0.910.860.820.800.7811.450 1.431.281.151.050.9711.700 1.861.831.791.701.5811.950 1.901.901.891.881.8712.200 1.921.921.921.911.9112.450 1.931.931.931.921.9212.700 1.921.931.931.931.9312.950 1.921.921.921.921.9213.200 1.911.911.911.921.9213.450 1.901.901.901.901.9113.700 1.881.891.891.891.8913.950 1.871.871.871.881.8814.200 1.851.851.861.861.8614.450 1.831.841.841.841.8514.700 1.811.821.821.831.8314.950 1.801.801.801.811.8115.200 1.781.781.781.791.7915.450 1.761.761.761.771.7715.700 1.741.741.741.751.7515.950 1.711.721.721.731.7316.200 1.691.701.701.711.7116.450 1.671.681.681.691.6916.700 1.651.661.661.661.6716.950 1.631.631.641.641.6517.200 1.611.611.611.621.6217.450 1.581.591.591.601.6017.700 1.561.571.571.571.5817.950 1.541.541.551.551.5618.200 1.521.521.531.531.5318.450 1.491.501.501.511.5118.700 1.471.471.481.481.4918.950 1.451.451.461.461.4719.200 1.421.431.431.441.4419.450 1.401.411.411.421.4219.700 1.381.381.391.391.4019.950 1.351.361.361.371.3720.200 1.331.331.341.341.3520.450 1.301.311.311.321.3220.700 Page 56 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (OUT) Return Event: 100 yearsSubsection: Pond Routed Hydrograph (total out) HYDROGRAPH ORDINATES (ft³/s) Output Time Increment = 0.050 hours Time on left represents time for first value in each row. Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Flow (ft³/s) Time (hours) 1.281.291.291.291.3020.950 1.261.261.271.271.2821.200 1.231.241.241.251.2521.450 1.211.211.221.221.2321.700 1.191.191.201.201.2121.950 1.161.171.171.181.1822.200 1.141.151.151.151.1622.450 1.121.121.131.131.1422.700 1.101.101.111.111.1122.950 1.081.081.091.091.0923.200 1.051.061.061.071.0723.450 1.031.031.041.041.0523.700 (N/A)(N/A)(N/A)1.021.0223.950 Page 57 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 10 year Storm Event: 10 year stormLabel: PO-1 (IN) Return Event: 10 yearsSubsection: Pond Inflow Summary Summary for Hydrograph Addition at 'PO-1' Upstream NodeUpstream Link CM-1<Catchment to Outflow Node> Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 21.3711.9001.285CM-1Flow (From) 21.3711.9001.285PO-1Flow (In) Page 58 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments Scenario: Post-Development 100 year Storm Event: 100 year stormLabel: PO-1 (IN) Return Event: 100 yearsSubsection: Pond Inflow Summary Summary for Hydrograph Addition at 'PO-1' Upstream NodeUpstream Link CM-1<Catchment to Outflow Node> Node Inflows Flow (Peak) (ft³/s) Time to Peak (hours) Volume (ac-ft) ElementInflow Type 36.5411.9002.251CM-1Flow (From) 36.5411.9002.251PO-1Flow (In) Page 59 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc PO-1 (Time vs. Volume, 100 years (Post-Development 100 year))...17, 18, 19 PO-1 (Time vs. Volume, 10 years (Post-Development 10 year))...14, 15, 16 PO-1 (OUT) (Time vs. Elevation, 100 years (Post-Development 100 year))...11, 12, 13 PO-1 (OUT) (Time vs. Elevation, 10 years (Post-Development 10 year))...8, 9, 10 PO-1 (OUT) (Pond Routed Hydrograph (total out), 100 years (Post-Development 100 year))...55, 56, 57 PO-1 (OUT) (Pond Routed Hydrograph (total out), 10 years (Post-Development 10 year))...52, 53, 54 PO-1 (IN) (Pond Inflow Summary, 100 years (Post-Development 100 year))...59 PO-1 (IN) (Pond Inflow Summary, 10 years (Post-Development 10 year))...58 PO-1 (IN) (Level Pool Pond Routing Summary, 100 years (Post-Development 100 year))...51 PO-1 (IN) (Level Pool Pond Routing Summary, 10 years (Post-Development 10 year))...50 PO-1 (Elevation-Area Volume Curve, 100 years (Post-Development 100 year))...21 PO-1 (Elevation-Area Volume Curve, 10 years (Post-Development 10 year))...20 P Outlet-2 (Diverted Hydrograph, 100 years (Post-Development 100 year))...47, 48, 49 Outlet-2 (Diverted Hydrograph, 10 years (Post-Development 10 year))...44, 45, 46 O-3 (Addition Summary, 100 years (Post-Development 100 year))...7 O-3 (Addition Summary, 10 years (Post-Development 10 year))...6 O Master Network Summary...1 M CM-1 (Unit Hydrograph Summary, 100 years (Post-Development 100 year))...4, 5 CM-1 (Unit Hydrograph Summary, 10 years (Post-Development 10 year))...2, 3 C 6" Orifice (Outlet Input Data, 100 years (Post-Development 100 year))...33, 34, 35, 36 6" Orifice (Outlet Input Data, 10 years (Post-Development 10 year))...22, 23, 24, 25 6" Orifice (Individual Outlet Curves, 100 years (Post-Development 100 year))...37, 38, 39, 40, 41 6" Orifice (Individual Outlet Curves, 10 years (Post-Development 10 year))...26, 27, 28, 29, 30 6" Orifice (Composite Rating Curve, 100 years (Post-Development 100 year))...42, 43 6" Orifice (Composite Rating Curve, 10 years (Post-Development 10 year))...31, 32 6 Old Meridian Apartments Index Page 60 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc Old Meridian Apartments PO-1 (Time vs. Volume, 100 years (Post-Development 100 year))...17, 18, 19 PO-1 (Time vs. Volume, 10 years (Post-Development 10 year))...14, 15, 16 PO-1 (OUT) (Time vs. Elevation, 100 years (Post-Development 100 year))...11, 12, 13 PO-1 (OUT) (Time vs. Elevation, 10 years (Post-Development 10 year))...8, 9, 10 PO-1 (OUT) (Pond Routed Hydrograph (total out), 100 years (Post-Development 100 year))...55, 56, 57 PO-1 (OUT) (Pond Routed Hydrograph (total out), 10 years (Post-Development 10 year))...52, 53, 54 PO-1 (IN) (Pond Inflow Summary, 100 years (Post-Development 100 year))...59PO-1 (IN) (Pond Inflow Summary, 10 years (Post-Development 10 year))...58PO-1 (IN) (Level Pool Pond Routing Summary, 100 years (Post-Development 100year))...51PO-1 (IN) (Level Pool Pond Routing Summary, 10 years (Post-Development 10year))...50PO-1 (Elevation-Area Volume Curve, 100 years (Post-Development 100 year))...21PO-1 (Elevation-Area Volume Curve, 10 years (Post-Development 10 year))...20POutlet-2 (Diverted Hydrograph, 100 years (Post-Development 100 year))...47, 48,49Outlet-2 (Diverted Hydrograph, 10 years (Post-Development 10 year))...44, 45, 46O-3 (Addition Summary, 100 years (Post-Development 100 year))...7O-3 (Addition Summary, 10 years (Post-Development 10 year))...6OMaster Network Summary...1MCM-1 (Unit Hydrograph Summary, 100 years (Post-Development 100 year))...4, 5CM-1 (Unit Hydrograph Summary, 10 years (Post-Development 10 year))...2, 3C6" Orifice (Outlet Input Data, 100 years (Post-Development 100 year))...33, 34,35, 366" Orifice (Outlet Input Data, 10 years (Post-Development 10 year))...22, 23, 24,256" Orifice (Individual Outlet Curves, 100 years (Post-Development 100 year))...37,38, 39, 40, 416" Orifice (Individual Outlet Curves, 10 years (Post-Development 10 year))...26,27, 28, 29, 306" Orifice (Composite Rating Curve, 100 years (Post-Development 100 year))...42,436" Orifice (Composite Rating Curve, 10 years (Post-Development 10 year))...31,326 Page 61 of 6127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 8/23/2022 PondPack CONNECT Edition [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterOld Meridian Apartments- Run-Off.ppc