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HomeMy WebLinkAbout06120001 Large Plan for Old Meridian Place, Sec. 1 pg. 06EROSION CONTROL MEASURE INSTALLATION SEQUENCE MAINTENANCE STONE ENTRANCE PRIOR TO CLEANING AND GRADING INSPECT ENTRANCE PAD AND SEDIMENT DISPOSAL AREA WEEKLY AND AFTER STORM EVENTS OR HEAVY USE. RESHAPE PAD AS NEEDED FOR DRAINAGE AND RUNOFF CONTROL. TOPDRESS WITH CLEAN STONE AS NEEDED. IMMEDIATELY REMOVE MUD AND SEDIMENT TRACKED OR WASHED ONTO PUBLIC ROADS BY BRUSHING OR SWEEPING. FLUSHING SHOULD ONLY BE USED IF THE WATER IS CONVEYED INTO A SEDIMENT TRAP OR BASIN. REPAIR ANY BROKEN ROAD PAVEMENT IMMEDIATELY. SILT FENCE PRIOR TO CLEANING AND GRADING INSPECT THE SILT FENCE PERIODICALLY AND AFTER EACH STORM EVENT. IF FENCE FABRIC TEARS, STARTS TO DECOMPOSE, OR IN ANY WAY BECOMES INEFFECTIVE, REPLACE THE AFFECTED PORTION IMMEDIATELY. REMOVE DEPOSITED SEDIMENT WHEN IT REACHES HALF THE HEIGHT OF THE FENCE AT ITS LOWEST POINT OR IS CAUSNG THE FABRIC TO BULGE. TAKE CARE TO AVOID UNDERMINING THE FENCE DURING CLEANOUT. AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE THE FENCE AND SEDIMENT DEPOSITS, BRING THE DISTURBED AREA TO GRADE, AND STABIUZE. TOPSOIL STOCKPILE PRIOR TO CLEANING AND GRADING DETERMINE DEPTH AND SUITABILITY OF TOPSOIL AT THE SITE. (FOR HELP, CONTACT YOUR LOCAL SWCD OFFICE TO OBTAIN A COUNTY SOIL SURVEY REPORT OR CONSULT WITH A SOIL SCIENTIST.) PRIOR TO STRIPPING TOPSOIL, INSTALL ANY SITE-SPECIFIC DOWNSLOPE PRACTICES NEEDED TO CONTROL RUNOFF AND SEDIMENTATION. REMOVE THE SOIL MATERIAL NO DEEPER THAN WHAT THE COUNTY SOIL SURVEY DESCRIBES AS "SURFACE SOIL!' (I.E., A OR AP HORIZON). STOCKPILE THE MATERIAL IN ACCESSIBLE LOCATIONS THAT NEITHER INTERFERE WITH OTHER CONSTRUCTION ACTIVITIES NOR BLOCK NATURAL DRAINAGE; AND INSTALL SILT FENCES, STRAW BALES, OR OTHER BARRIERS TO TRAP SEDIMENT (SEE EXHIBIT 3.02-B). (SEVERAL SMALL PILES AROUND THE CONSTRUCTION SITE ARE USUALLY MORE EFFICIENT AND EASIER TO CONTAIN THAN ONE LARGE PILE.) IF SOIL IS STOCKPILED FOR MORE THAN 6 MO., IT SHOULD BE TEMPORARILY SEEDED OR COVERED WITH A TARP OR SURROUNDED BY A SEDIMENT BARRIER. TEMPORARY DIVERSIONS AFTER ROUGH GRADING INSPECT WEEKLY AND FOLLOWING EACH STORM EVENT. REMOVE SEDIMENT FROM THE CHANNEL AND REINFORCE THE RIDGE AS NEEDED. CHECK THE OUTLETS AND MAKE NECESSARY REPAIRS IMMEDIATELY. REMOVE SEDIMENT FROM TRAPS WHEN THEY ARE 50% FULL. WHEN THE WORK AREA HAS BEEN STABILIZED, REMOVE THE RIDGE, FILL THE CHANNEL TO BLEND WITH THE NATURAL GROUND, REMOVE TEMPORARY SLOPE DRAINS, AND STABILIZE ALL DISTURBED AREAS. ROCK DAM AFTER ROUGH GRADING INSPECT THE ROCK DAM AND BASIN FOLLOWING EACH STORM EVENT. REMOVE SEDIMENT WHEN IT ACCUMULATES TO HALF THE DESIGN VOLUME (MARKED BY STAKE) CHECK THE DAM AND ABUTMENTS FOR EROSION, PIPING, AND ROCK DISPLACEMENT, AND REPAIR IMMEDIATELY IF THE BASIN DOES NOT DRAIN BETWEEN STORMS, REPLACE THE STONE ON THE UPSTREAM FACE OF DAM IF THE BASIN DRAINS TO RAPIDLY FOLLOWING A STORMAESS THAN 6 HRS.), ADD INDOT CA NO. 5 GRAVEL ON THE UPSTREAM FACE OF THE DAM. ONCE THE CONTRIBUTING DRAINAGE AREA HAS BEEN PERMANENTLY STABILIZED, a. REMOVE WATER AND SEDIMENT FROM THE BASIN. b. REMOVE THE DAM, DISPOSING OF THE ROCK IN DESIGNATED DISPOSAL AREAS. C. SMOOTH THE SITE TO BLEND THE SURROUNDING AREA. d. STABILIZE TEMPORARY SEEDING AFTER ROUGH GRADING INSPECT PERIODICALLY AFTER PLANTING TO SEE THAT VEGETATIVE STANDS ARE ADEQUATELY ESTABLISHED; RE- SEED IF NECESSARY. CHECK FOR EROSION DAMAGE AFTER STORM EVENTS AND REPAIR; RESEED AND MULCH IF NECESSARY. TOPDRESS FALL SEEDED WHEAT OR RYE SEEDINGS WITH 50 LBS./ACRE OF NITROGEN IN FEBRUARY OR MARCH IF NITROGEN DEFICIENCY IS APPARENT. (EXHIBIT 3.11-B SHOWS ONLY WHEAT/RYE FALL SEEDED.) PERMANENT SEEDING AFTER FINISH GRADING INSPECT PERIODICALLY, ESPECIALLY STORM EVENTS, UNTIL THE STAND IS SUCCESSFULLY ESTABLISHED. (a-IARACTERISTICS OF A SUCCESSFUL STAND INCLUDE: VIGOROUS DARK GREEN OR BLUISH-GREEN SEEDLINGS; UNIFORM DENSITY 'MTH NURSE PLANTS, LEGUMES, AND GRASSES WELL INTERMIXED; GREEN LEAVES; AND THE PERENNIALS REMAINING GREEN THROUGHOUT THE SUMMER, AT LEAST AT THE PLANT BASE.) PLAN TO ADD FER11LIZER THE FOLLOWING SEASON ACCORDING TO SOIL TEST RECOMMENDATIONS. REPAIR DAMAGED, BARE, OR SPARSE OR PATCHY, BY FILLING ANY GULLIES, RE-FERTILIZING, OVER OR RE- SEEDING AND MULCHING AFTER RE-PREPARING THE SEEDBED. IF VEGETATION FAILS TO GROW, CONSIDER SOIL TESTING TO DETERMINE ACIDITY OR NUTRIENT DEFICIENCY PROBLEMS. (CONTACT YOUR SWCD OR COOPERATIVE EXTENSION OFFICE FOR ASSISTANCE.) IF ADDITIONAL FERTILIZATION IS NEEDED TO GET A SATISFACTORY STAND, DO SO ACCORDING TO SOIL TEST RECOMMENDATIONS. EROSION CONTROL MATTING AFTER FINISH GRADING DURING VEGETATIVE ESTABLISHMENT, INSPECT AFTER STORM EVENTS FOR ANY EROSION BELOW THE BLANKET. IF ANY AREA SHOWS EROSION, PULL BACK THAT PORTION OF THE BLANKET COVERING IT, ADD SOIL, RE-SEED THE AREA, AND RE-LAY AND STAPLE THE BLANKET. AFTER VEGETATIVE ESTABLISHMENT, CHECK THE TREATED AREA PERIODICALLY. STRAW BALES AFTER FINISH GRADING INSPECT THE DROP INLET PROTECTION AFTER EACH STORM EVENT, AND MAKE NEEDED REPAIRS IMMEDIATELY. REMOVE SEDIMENT FROM THE POOL AREA TO ENSURE ADEQUATE RUNOFF STORAGE FOR THE NEXT RAIN, TAKING CARE TO NOT DAMAGE OR UNDERCUT THE BALES. WHEN THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE ALL BALES, CONSTRUCTION MATERIAL, AND SEDIMENT AND DISPOSE OF PROPERLY, GRADE THE DISTURBED AREA TO THE ELEVATION OF THE TOP OF THE INLET AND STABILIZE. INLET PROTECTION AFTER EACH INLET IN PLACED INSPECT FREQUENTLY FOR DAMAGE BY VEHICULAR TRAFFIC, AND REPAIR IF NEEDED. INSPECT AFTER EACH STORM EVENT. REMOVE SEDIMENT (BUT NOT BY FLUSHING) WHEN IT REACHES HALF THE HEIGHT OF THE BARRIER. DEPOSIT REMOVED SEDIMENT WHERE IT YALL NOT ENTER STORM DRAINS. REMOVAL OF STRAW BALES AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED N/A REMOVAL OF INLET PROTECTION AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED N/A REMOVAL OF SILT FENCE AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED N/A Ili 2 EACH DUMP STRAPS Illiir EXPANSION RESTRA/NT (1/4" NYLON ROPE, vb.. lr If 2" FLAT WASHERS) A INSTALLATION DETAIL ,z==:.--„ BAG DETAIL DUMP STRAP 1" REBAR BAG REMOVAL F FOR ROM INLET e SILT LENGTH= L. :7• 1) CP-r, 4 DUMP STRAP 0 WIDTH= DEPTH= QUANTITY= DETAIL OF INLET SEDIMENT CONTROL DEVICE PROJECT: CITY: DR. BY: STATE: DATE: DR. NO: THIS SHEET TO BE USED FOR EROSION CONTROL ONLY. STABILIZATION PRACTICE PERMANENT SEEDING DORMANT SEEDING SEEDING SODDING MULCHING JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEPT. OCT. NOV. DEC. F** Seedbed Preparation for Permanent Seeding SEASONAL SOIL PROTECTION CHART A /////8/ 1. Test soil to determine pH and nutrient levels. (Contact you county SWCD or Cooperative Extension office for assistance and soils information, including available testing services.) 2. If soil pH is unsuitable for the species to be seeded, apply lime according to test recommendations. 3. Fertilize as recommended by the soil test. If testing was not done, consider applying 400-600 lbs./acre of 12-12-12 analysis, or equivalent, fertilizer. 4. Till the soil to obtain a uniform seedbed, working the fertilizer and lime into the soil 2-4 in. deep with a disk or rake operated across the slope. KENTUCKY BLUE GRASS 40 lbs./AC.: CREEPING RED FESCUE 40 lbs./AC.: PLUS 2 TONS STRAW MULCH/AC. OR ADD ANNUAL RYEGRASS 20Ibs>/AC. B KENTUCKY BLUE GRASS 60 lbs./AC.: CREEPING RED FESCUE 60 lbs./AC.: PLUS 2 TONS STRAW MULCH/AC. OR ADD ANNUAL RYEGRASS 30Ibs>/AC. C SPRING OATS 3 BUSHEL/ACRE D WHEAT OR RYE 2 BUSHEL/ACRE E ANNUAL RYEGRASS 40 lbs./AC. (1 lb./1000 sq. ft.) F SOD G STRAW MULCH 2 TONS/ACRE-ANCHOR ALL MULCH BY CRIMPING OR TACKIFYING IRRIGATION NEEDED DURING JUNE, JULY, AND/OR SEPT. IRRIGATION NEEDED FOR 2 TO 3 WEEKS AFTER APPLYING SOD Rule 5 requires all disturbed areas likely to be idle for 15 day shall have surface stabilization applied. When weather conditions prevent rapid germination of grass, then 2t/ac mulch will be used to ensure ground stabilization requirements are met. Drop Inlet Protection Basket It is the intent of this device to detain water for the purpose of allowing suspended solids in the water to settle out before the water enters the storm structure. Some filtering will occur as water passes through the device. The bottom of this device is to seal against the flat outer part of the casting. The overall dimension of the basket shall be no smaller than the water inlet perforations in the casting and no larger than the outer din of the casting. The height shall be 15" The basket frame shall be welded wire mesh rolled or bunt and welded to itself to fit the casting_ The wire size shall he no smaller than .149" dia and openings no larger than 18 sq in. It is important that the bottom of the wire frame he smooth so as not to allow any leakage betw een the basket and casting. The top of the basket shall be open to prevent flooding during heavy storm events. Fabric shall be woven polypropylene allowing 15-25ga1lmin/sq in. If non-woven fabric is used, the maintenance intervals should be increased to replace silt laden fabric. The fabric shall be attached to the frame and tblded under the bottom to help seal against the casting. This device should be used in conjunction with other Best Ntanagemaint Practices to maximize the efficiency of the erosion control plan. Suppliers for this product include: Lakeside Supply Inc 317) 281-2661, Turfgrass Inc (317) 894-3276. OLD MERIDIAN SECTION ONE A part of the Southeast Quarter of Section 26, Township 18 North, Range 3 East, Hamilton County, Indiana, more particularly described as follows: Commencing at the Northeast corner of said Quarter Section being marked by a xxxxxxxx; thence South 89 degrees 08 minutes 21 seconds West along the North line of said Quarter Section, 1,351.75 feet; thence South 00 degrees 18 minutes 29 seconds East 422.17 feet to the POINT OF BEGINNING of this description; thence South 89 degrees 45 minutes 27 seconds East 436.11 feet to a point on a curve concave southerly, the radius point of said curve being South 00 degrees 01 minutes 06 seconds West 172.85 feet from said point; thence easterly along said curve 106.68 feet to the point of tangency of said curve, said point being North 35 degrees 22 minutes 44 seconds East 172.85 feet from the radius point of said curve; thence South 54 degrees 50 minutes 42 seconds East 285.44 feet; thence North 80 degrees 24 minutes 17 seconds East 35.51 feet; thence North 35 degrees 39 minutes 16 seconds East 1.59 feet; thence South 54 degrees 50 minutes 42 seconds East 60.00 feet; thence South 35 degrees 39 minutes 16 seconds West 713.43 feet; thence North 54 degrees 20 minutes 44 seconds West 60.00 feet; thence North 09 degrees 20 minutes 44 seconds West 49.50 feet; thence North 54 degrees 20 minutes 44 seconds West 39.02 feet to the point of curvature of a curve concave northeasterly, the radius point of said curve being North 35 degrees 39 minutes 16 seconds East 225.00 feet from said point; thence northwesterly along said curve 77.23 feet to the point of tangency of said curve, said point being South 55 degrees 19 minutes 15 seconds West 225.00 feet from the radius point of said curve, said point also being the point of curvature of a curve concave southerly, the radius point of said curve being South 55 degrees 19 minutes 15 seconds West 25.00 feet from said point; thence westerly along said curve 31.54 feet to the point of tangency of said curve, said point being North 16 degrees 57 minutes 52 seconds West 25.00 feet from the radius point of said curve to a point on a curve concave northerly, the radius point of said curve being North 16 degrees 55 minutes 32 seconds West 175.81 feet from said point; thence westerly along said curve 50.71 feet to the point of tangency of said curve, said point being South 00 degrees 23 minutes 56 seconds East 175.81 feet from the radius point of said curve; thence South 89 degrees 38 minutes 23 seconds West 294.34 feet to the point of curvature of a curve concave southerly, the radius point of said curve being South 00 degrees 21 minutes 37 seconds East 125.00 feet from said point; thence westerly along said curve 47.15 feet to the point of tangency of said curve, said point being North 21 degrees 58 minutes 14 seconds West 125.00 feet from the radius point of said curve; thence South 68 degrees 01 minutes 46 seconds West 35.95 feet; thence North 21 degrees 58 minutes 14 seconds West 50.00 feet; thence North 68 degrees 01 minutes 46 seconds East 17.02 feet to a point on a curve concave westerly, the radius point of said curve being North 80 degrees 18 minutes 08 seconds West 20.00 feet from said point; thence northerly along said curve 11.48 feet to the point of tangency of said curve, said point being North 66 degrees 48 minutes 41 seconds East 20.00 feet from the radius point of said curve; thence North 23 degrees 11 minutes 20 seconds West 12.49 feet to the point of curvature of a curve concave easterly, the radius point of said curve being North 66 degrees 48 minutes 40 seconds East 162.00 feet from said point; thence northerly along said curve 40.89 feet to the point of tangency of said curve, said point being South 81 degrees 16 minutes 20 seconds West 162.00 feet from the radius point of said curve; thence North 08 degrees 43 minutes 39 seconds West 129.11 feet; thence North 81 degrees 16 minutes 21 seconds East 24.00 feet; thence North 89 degrees 38 minutes 23 seconds East 151.64 feet to a point on a curve concave northeasterly, the radius point of said curve being North 00 degrees 21 minutes 37 seconds West 70.00 feet from said point; thence northwesterly along said curve 110.04 feet to the point of tangency of said curve, said point being South 89 degrees 42 minutes 34 seconds West 70.00 feet from the radius point of said curve; thence North 00 degrees 17 minutes 27 seconds West 46.60 feet to the point of curvature of a curve concave southeasterly, the radius point of said curve being North 89 degrees 42 minutes 33 seconds East 70.00 feet from said point; thence northeasterly along said curve 110.60 feet to the point of tangency of said curve, said point being North 00 degrees 14 minutes 21 seconds East 70.00 feet from the radius point of said curve; thence North 89 degrees 45 minutes 38 seconds West 153.92 feet; thence North 00 degrees 14 minutes 33 seconds East 32.87 feet; thence North 89 degrees 04 minutes 09 seconds East 1175.04 feet; thence North 00 degrees 18 minutes 29 seconds West 196.26 feet to the place of beginning, containing 12.004 acres, more or less. FENCE POST (2x2 HARDWOOD POST) SILT FENCE MATERIAL FENCE POST SHOULD BE BURIED 1' BELOW GROUND SURFACE. Phr teal property Fill aring efficiency Tensile strength at 20% elongation: Standard strength Extra strengt h Slurry flow rate Water flow rate UV resistance 6'-8" GROUND SURFACE I_ SILT FENCE MATERIAL SHOULD BE BURIED 6" BELOW GROUND SURFACE. SILT FENCE DETAIL NOT-TO-SCALE Exhlblt 3.74-0. SpocificatIona minonums for 511t Fence Fain ie. Woven fabric 30 lbs./linear in. lbs./lineat 0.3 gal./min./suit. '15 gal,/mio./sq,ft. 70% Non-woven fabric 85% 50 lbs./linear in. 70 lbs./linear in. 4.5 gal./rnin./sq.ft. *27.0 g41./min,/sySl. R5% --K 3' A 1 STAPLE PER SQ. YD. 300 275 250 225 200 I- 175 (0 Li) 150 IA 125 75 50 25 FT. 2"-3" WASHED STONE (INDOT CA. #2) PARK PLACE AT THE PRAIRIES A2 11" x 17" PLAT This drawing is attached in the 0 M Manual. A7 HYDROLOGIC UNIT CODE (HUC) 005120201090030 A8 STATE AND FEDERAL WATER QUALITY PERMITS None are required for this project. A15 ADJACENT LAND USE Upstream watershed: Currently grassy weeds Site is zoned P.U.D. North: Residential East: Commercial South: Residential/Commercial West: Residential A22 EXISTING SITE TOPOGRAPHY Refer to Sheets C100. A23 PROPOSED FINAL SITE TOPOGRAPHY Refer to Sheets C200. STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN GREEN EROSION CONTROL BLANKETS. STAPLE PATTERNS WILL VARY DEPENDING UPON SLOPE LENGTH, SLOPE GRADE, SOIL TYPE AND AVERAGE ANNUAL RAINFALL. 4:1 3:1 1-1/2 STAPLES PER SO. YD. 2:1 A4 VICINITY MAP A copy of the vicinity map is shown on the Title Sheet. 1:1 SLOPE GRADIENT NOT-TO-SCALE LOW MED/HIGH FLOW FLOW CHANNEL CHANNEL AND SHORELINE 2 STAPLES PER SQ. YD. EROSION CONTROL BLANKET STAPLE PATTERN GUIDE NOT- TO-SCALE 2C-0" MIN. WIDTH CONSTRUCTION ENTRANCE DETAIL SITE NAME The area scheduled for construction is known as "Old Meridian Place, Section One" (hereinafter referred to as the "Project"). PROJECT LOCATION The property is located on the South side 131st Street and along the West Side of Old Meridian Latitude: 39• 58' 35" N Longitude: 86° 08' 58" W OWNER'S INFORMATION Name: Centex Homes Address: 8440 Allison Pointe Boulevard, Suite 200, Indianapolis, Indiana 46250 Representative: Tim McMahon Title: President Telephone: (317) 915-2200 Facsimile: (317) 849-3486 OPERATOR'S INFORMATION Name: Centex Homes Address: 8440 Allison Pointe Boulevard, Suite 200, Indianapolis, Indiana 46250 Representative: Todd Schaefer Title: Land Development Operations Manager Telephone: (317) 806-2920 Ex. 249 Facsimile: (317) 849-3486 NOTICE OF INTENT All parties defined as owners or operators must submit a Notice of Intent (N01) at least 48 hours prior to commencement of on-site construction activities. Submittal of late NOI's is not prohibited; however, authorization under the construction general permit is only for discharges that occur after permit coverage is graned. Unpermitted discharges may be subject to enforcement actions by the EPA. For the purposes of this permit, an operator is defined as any party meeting either of the following requirements: a) The party has operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications. b) The party has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other permit conditions. A3 PROJECT NARRATIVE This project includes the construction of 49 Lots in Old Meridian Place, Section One, and consists of approximately 12.004 acres. Construction will include pad grades for the buildings, associated roadways, landscaping, and drainage infrastructure. A5 LEGAL DESCRIPTION OF PROJECT SITE The site is a part of the following tract of land as described on the Title Sheet. 3.5 STAPLES PER SQ. YD. A6 LOCATION OF ALL LOTS AND PROPOSED SITE IMPROVEMENTS The site will be subdivided as shown on the Site Plans. Please refer to sheet C200 for detail. A9 SPECIFIC POINT WHERE STORMWATER DISCHARGE WILL LEAVE THE SITE Stormwater discharge will leave the site at the Northeast side of the site. This will discharge into existing lakes and piping systems that eventually will discharge into the W.R. Fertig Regulated Drain. A10 LOCATION AND NAME OF ALL WETLANDS. LAKES. AND WATERCOURSES ON AND ADJACENT TO THE SITE There are no wetlands on the site. All IDENTIFICATION OF ALL RECEIVING WATERS The W.R. Fertig Regulated Drain is the main receiving water for the project area. Al2 IDENTIFICATION OF ALL POTENTIAL DISCHARGES TO GROUND WATER Potential discharges into the groundwater may have occurred in the underground storage systems. A13 100-YEAR FLOODPLAINS. FLOODWAYS, AND FLOODWAY FRINGES The site does not lie within any floodplain, floodway, or floodway fringe. The information was obtained from Flood Insurance Rate Map Panel 18057CO207F for Hamilton County, Indiana. A14 PRE-CONSTRUCTION AND POST-CONSTRUCTION ESTIMATE OF PEAK DISCHARGE Allowable 2-year discharge: 14.99 cfs Post-construction 10-year discharge: 14.00 cfs. 10-year discharge: 31.84 cfs 100-year discharge: 18.96 cfs. A16 LOCATIONS AND APPROXIMATE BOUNDARIES OF ALL DISTURBED AREAS Approximate boundaries of disturbed areas are as identified on Sheets C200. A17 IDENTIFICATION OF EXISTING VEGETATIVE COVER As the site is mainly farmland, the existing vegetative cover consists mostly of grass weeds. A18 SOILS MAP INCLUDING SOIL DESCRIPTIONS AND LIMITATIONS Soil information from the Hamilton County Soil Survey is shown on Sheet C302. Sheet C302 includes a copy of the soil map, descriptions of the soils. A19 LOCATIONS, SIZE. AND DIMENSIONS OF PORPOSED STORMWATER SYSTEMS Locations of stormwater systems: Sheets C200 and C600-C601. Size of storm sewers: Sheet C600-C601. Details of storm inlets and manholes: Sheets C600-C601 and C801. A20 PLANS FOR ANY OFF-SITE CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PROJECT There are no offsite Drainage construction activities associated with the project. A21 LOCATIONS OF PROPOSED SOIL STOCKPILES AND/OR BORROW/DISPOSAL AREAS There is not a soil stockpile area located on this site. 20' CONSTRUCTION SEQUENCE FOR BUILDING SITE EROSION CONTROL PRACTICES SUBSOIL CD STOCKPILE AREA TO BE TOP- SOILED, SEEDED, AND MULCHED BY OWNER AT COMPLETION OF CONSTRUCTION. PALIMAR IS TO BE USED IF GRASS GROWTH IS NOT POSSIBLE. SIDE YARD DRAINAGE SWALE SIDE- WALK 1. Structural fill 2. Road base 3. Concrete drainage pipe 4. Concrete culverts 5. Precast concrete manholes DROP INLET PROTECTION BASKET 0 >0 0 0 CD HOUSE re STREET TO BE CLEANED AT END OF EVERY WORKING DAY CURB INLET PROTECTION REAR YARD DRAINAGE SWALE GARAGE 0 0 0 PINMEN1111/12111111••••1111111111.11•11111111/ III•111111101'S WSW, NOP ■■••191111111111=111 111.EqS NOTES: 1. EROSION/ SEDIMENT CONTROL MEASURES MUST BE FUNCTIONAL AND BE MAINTAINED THROUGHOUT CONSTRUCTION. 2. MAINTAIN POSITIVE DRAINAGE AWAY FROM THE STRUCTURE. 3. CONTRACTOR TO CLEAN STREETS WHEN DIRT AND CONSTRUCTION DEBRIS IS EVIDENT. 4. PERIMETER PROTECTION SHOULD BE INSTALLED BEFORE EXCAVATION OF BASEMENT/FOUNDATION HAS BEGUN. PERIMETER PROTECTION ON LOTS SHALL REMAIN IN PLACE UNTIL THE LOT IS STABILIZED WITH AT LEAST 70% COVER. ALL TRASH AND CONSTRUCTION DEBRIS SHALL BE DISPOSED PROPERLY INTO AN ENCLOSED WASTE RECEPTACLE. STORM WATER POLLUTION PREVENTION NOTES: (A) All storm water quality measures, including erosion and sediment control, necessary to comply with this rule must be implemented in accordance with the plan and sufficient to satisfy subsection (B) Provisions for erosion and sediment control on individual building lots regulated under the original permit of a project site owner must include the following requirements: (1) The individual lot operator, whether owning the property or acting as the agent of the property owner, shall be responsible for erosion and sediment control requirements associated with activities on individual lots. (2) Installation and maintenance of a stable construction site access. (3) Installation and maintenance of appropriate perimeter erosion and sediment control measures prior to land disturbance. (4) Sediment discharge and tracking from each lot must be minimized throughout the land disturbing activities on the lot until permanent stabilization has been achieved. (5) Clean-up of sediment must be redistributed or disposed of in a manner that is in compliance with all applicable statutes and rules. (6) Adjacent lots disturbed by and individual lot operator must be repaired and stabilized with temporary or permanent surface stabilization. (7) For individual residential lots, final stabilization meeting the criteria in section 7(b)(20) or this rule will be achieved when the individual lot operator: (A) completes final stabilization; or (B) has installed appropriate erosion and sediment control measures for an individual lot prior to occupation of the home by the homeowner and has informed the homeowner of the requirement for, and benefits of, final stabilization. 7(b)(20) Final stabilization of a project site is achieved when: (A) all land disturbing activities have been completed and a uniform (for example, evenly distributed, without large bare areas) perennial vegetative cover with a density of seventy percent (70%) has been established on all unpaved areas and areas not covered by permanent structures, or equivalent permanent stabilization measures have been employed; and (B) construction projects on land used for agricultural purposes are returned to its preconstruction agricultural use or disturbed areas, not previously used for agricultural production, such as filter strips and areas that are not being returned to their preconstruction agricultural use, meet the final stabilization requirements in clause (A). INDIVIDUAL LOT STORM WATER POLLUTION PREVENTION DETAIL NOT-TO-SCALE 81 DESCRIPTION OF POTENTIAL POLLUTANT SOURCES ASSOCIATED WITH CONSTRUCTION ACTIVITIES The following potential pollutant sources may be associated with construction activities on site: 1. Material storage areas (more specifically described below) 2. Construction waste material 3. Fuel storage areas and fueling stations 4. Exposed soils 5. Leaking vehicles and equipment 6. Sanitary waste from temporary toilet facilities 7. Litter 8. Windblown dust 9. Soil tracking off site from construction equipment The following construction materials will be staged or stored on site at various points during development of the site. 82 SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION RELATIVE TO LAND-DISTURBING ACTIVITIES The following is a list in sequence of construction activities to control soil erosion: 1. Construction on the site being started. Contractor and/or Developer to notify IDEM and City of Carmel The contractor shall schedule a Pre-construction meeting with the City of Carmel prior to any 48 hours prior to construction beginning. 2. The construction entrance installed. 3. Maintenance and Refueling area constructed 4. Concrete washout area constructed 5. Posting information area shall be constructed. All items, as outlined in the in the O&M manual for Post Constuction water quality measures shall be placed in this area. 6. Perimeter Silt fencing to be installed. 7. Grade the site (sides of swales, mounds and ponds to be stabilized with erosion control blankets and to be seeded and mulched immediately upon completion). If the site remains inactive for a period of 15 days, stabilization is required to take place in the form of temporary seeding, mulch or spray on palimar. For temporary seeding, the contractor shall utilize a fast growing seed of either oats, annual ryegrass, wheat or rye depending on time of year. Disturbed areas should be kept to a minimum at all times. 8. Storm inlets are to be protected immediately after installation with Drop Inlet Protection. 9. Contractor shall control mud accumulation on all streets surrounding project by installing stone surface at all locations where construction traffic leaves the site. Dust shall be kept to a minimum by utilizing sprinkling, Calcium Chloride, Vegetative cover, spray on adhesives or other approved methods. 10. Maintain all filters and traps for inlets during constructio to prevent any blockages from accumulated sediment. Additional seeding and straw bales may be required during construction as specific by Engineer or City of Carmel. Payment for additional straw bales shall be at the contractor's expense. 11. Contractor shall install all sanitary sewers, storm sewers, subsurface drains, curbs, pavement and water mains. Disturbed areas will be stabilized after the storm and sanitary are installed. Disturbed areas will be stabilized after curbs, SSD and pavement are completed unless utilities are starting construction within 15 days of completing the curbs. Stabilize disturbed areas after the utilities are installed. 12. Complete Landscaping and sedding all remaining disturbed areas and remove all BMP's when areas are stabilized. B3 STABLE CONSTRUCTION ENTRANCE LOCATIONS AND SPECIFICATIONS Construction entrances will be in place prior to this phase of construction. Entrances are shown for reference on Sheets C300-C302. B4 SEDIMENT CONTROL MEASURES FOR SHEET FLOW AREAS Sheet flow areas will be protected by seed and mulch or hydroseeding. Erosion control blankets will be installed on sloped areas where the slope exceeds 6:1 (horizontal to vertical). Silt fencing will be utilized to minimize runoff from construction areas as identified on Sheets C300-C302. Refer to Sheet C302 for details. B5 SEDIMENT CONTROL MEASURES FOR CONCENTRATED FLOW AREAS Concentrated flow in diversion swales will be protected by rock check dams. None are needed on this site. B8 STORMWATER OUTLET PROTECTION SPECIFICATIONS Riprap revetment will be used at each of the stormwater outlets where not connecting into existing manholes. See sheets C300-C302 for additional information. 511 TEMPORARY SURFACE STABILIZATION METHODS APPROPRIATE FOR EACH SEASON Refer to Sheet C302, within the Seasonal Soil Protection Chart. 512 PERMANENT SURFACE STABILIZATION SPECIFICATIONS Refer to Sheet C302, within the Seasonal Soil Protection Chart. I313 MATERIAI HAND1IN_G__AMI-SPIJ L PREVENTION PLAN 5olid Waste Disposal No solid material, including building materials, is permitted to be discharged to surface waters or buried on site. All solid waste materials, including disposable materials incidental to the construction activity, must be collected in containers or closed dumpsters. The collection containers must be emptied periodically and the collected material hauled to a landfill permitted by the State and/or appropriate local municipality to accept the waste for disposal. Dumpsters and port-o-lets are not to be placed in the street. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper solid waste procedures. 0 TOPSOIL STOCKPILE EXISTING CURB AND GUTTER 86 STORM SEWER INLET PROTECTION MEASURE LOCATIONS AND SPECIFICATIONS The contractor has the option to use one of several storm sewer inlet protection methods, depending on the inlet location and the stage of construction. Refer to Sheet C300-C301 for locations and refer to Sheet C302 for details. Manufactured products such as the Dandy Bag or Catch-All products may also be used at the contractor's discretion. Manufactured products shall be installed in accordance with the manufacturer's specifications. Straw bales or filter fabric on, under, or around inlet grates will not be allowed as inlet protection measures. Coconut fiber logs are recommended. B7 RUNOFF CONTROL MEASURES Silt fence will be installed along portions of this project to prevent run off. see sheets C300-C302 for location. B9 GRADE STABILIZATION STRUCTURE LOCATIONS AND SPECIFICATIONS Erosion control blankets will be utilized as grade-stabilization structures. Refer to Sheets C300-C302 for additional information. 010 LOCATION. DIMENSIONS. SPECIFICATIONS. AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE Existing detention pond shall be used to extend detention times to achieve stormwater quality. All other stormwater quality measures can be found on Sheets C300-C302. CONSTRUCTION ENTRANCE/ EXIT Hazardous Waste EROSION CONTROL PLAN LEGEND 1 1 PROPERTY LINE/ DRAINAGE SWALE EXISTING DRAINAGE FINISHED DRAINAGE TREE CONSERVATION SILT FENCING GRAVEL ENTRANCE/ EXIT PAD CURB INLET PROTECTION DROP INLET PROTECTION SOIL SALVAGE AND UTILIZATION PERMANENT SEEDING A18. E Juni. Due. mien RES 1 usAwa, Whenever possible, minimize the use of hazardous materials and generation of hazardous wastes. All hazardous waste materials will be disposed in the manner specified by federal, state, or local regulations or by the manufacturer. Use containment berms in fueling and maintenance areas and where potential for spills is high. A foreman or supervisor should be designated in writing to oversee, enforce and instruct construction workers on proper hazardous waste procedures. The location of any hazardous waste storage areas should be indicated on the stormwater pollution prevention plan by the operator following on-site location of the facility. Dust Control/Off-site Vehicle Tracking During construction, water trucks should be used, as needed, by each contractor or subcontractor to reduce dust. After construction, the site should be stabilized to reduce dust. Construction traffic should enter and exit the site at a Construction Entrance with a rock pad or equivalent device. The purpose of the rock pad is to minimize the amount of soil and mud that is tracked into existing streets. If sediment escapes the construction site, off-site accumulations of sediment must be removed at a frequency sufficient to minimize offsite impacts. Sanitarv/Septic Contractors and subcontractors must comply with all state and local sanitary sewer, portable toilet, or septic system regulations. Sanitary facilities shall be provided at the site by each contractor or subcontractor throughout construction activities. The sanitary facilities should be utilized by all construction personnel and be serviced regularly. All expenses associated with providing sanitary facilities are the responsibility of the contractors and subcontractors. The location of any sanitary facilities should be indicated on the stormwater pollution prevention plan by the operator following on-site location of said facilities. Water Source Water used to establish and maintain grass, to control dust, and for other construction purposes must originate from a public water supply or private well approved by the State or local health department. Equipment Fueling. and Storage Areas Equipment fueling, maintenance, and cleaning should only be completed in protected areas (i.e., bermed area). Leaking equipment and maintenance fluids will be collected and not allowed to discharge into soil where they may be washed away during a rain event. SMILE Equipment wash down (except for wheel washes) should take place within an area surrounded by a berm. The use of detergents is prohibited. Hazardous Material Storage Chemicals, points, solvents, fertilizers, and other toxic or hazardous materials should be stored in their original containers (if original container is not resealoble, store the products in clearly labeled, waterproof containers). Except during application, the containers should be kept in trucks or in bermed areas within covered storage facilities. Runoff containing such materials shall be collected, removed from the site, and disposed of in accordance with the federal, state, and local regulations. As may be required by federal, state, or local regulations, the Contractor should have a Hazardous Materials Management Plan and/or Hazardous Materials Spill Prevention Program in place. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper hazardous materials storage and handling procedures. The location of any hazardous material storage areas should be indicated on the stormwater pollution prevention plan by the operator following on-site location of the storage areas. Spill Response Directions In the event of small spills, please contact the construction supervisor. In the event of spills that require removal of soils or other materials, please contact the construction supervisor, developer, County Surveyor's Office and the Local Fire Department. In the event of spills that have potential groundwater or surface water contamination, please contact the construction supervisor, developer, County Surveyor's Office, Local Fire Department, IDEM, and the City of Carmel Utility Department. See 0 M Manual for all Emergency Number. B14 MONITORING AND MAINTENANCE GUIDELINES FOR EACH PROPOSED STORMWATER QUALITY MEASURE Inspection Schedule/Reoorting All impacted areas, as well as all erosion and sediment control devices, will be inspected every seven (7) calendar days and within 24 hours after a rainfall of 0.5 inch or greater until a NOT is issued. Inspection reports after rain events are to be submitted to the City of Carmel Engineering Department One, Civic Square, attention Storm Water Administrator. Inspections shall be conducted and a written report prepared, by a designated and qualified person familiar with the USEPA NPDES Storm Water General Permit, and the Project. Inspection reports shall be completed including scope of the inspection, name(s) and qualifications of personnel making the inspection, the date of the inspection, observations relating to the implementation of the SWPPP, and any actions taken as a result of incidents of noncompliance noted during the inspection. The inspection report should state whether the site was in compliance or identify any incidents of noncompliance. The contractor shall keep a copy of the inspection reports on site and permanently for a period of two years following construction. The on-site reports may be requested by inspections conducted by the local MS-4. Construction Entrance Locations where vehicles exit the site shall be inspected for evidence of off-site sediment tracking. Each contractor and subcontractor shall be responsible for maintaining the Construction Entrance and other controls. Material Storage Inspections Inspectors must evaluate areas used for storage of materials that are exposed to precipitation. The purpose is to ensure that materials are protected and/or impounded so that pollutants cannot discharge from storage areas. Off-site material storage areas used solely by the subject project are considered to be part of the project and must be included in the erosion control plans and the site inspection reports. Soil Stabilization Inspections Seeded areas will be inspected to confirm that a healthy stand of vegetation is maintained. The site has achieved final stabilization once all areas are covered with pavement of have a stand of vegetation with at least 70% of the background vegetation density. The density of 70% or greater must be maintained to be considered as stabilized. The operator or their representative will water, fertilize, and reseed disturbed areas as needed to achieve this goal. Erosion and Sediment Control Inspections All controls should be inspected at least once every seven (7) calendar days and following any storm event of 0.5 inch or greater. The following is a list of inspection/maintenance practices that will be used for specific controls: 1. Geotextiles/Erosion Control Mats: Missing or loose matting must be replaced or re-anchored. 2. Curb Inlet Protection shall be cleaned at least once per week and after every 0.5 inch rainfall event. 3. Mulching: Inspected for thin or bare spots caused by natural decomposition or weather-related events. Mulch in high traffic area should be replaced on a regular basis to maintain uniform protection. 4. Sediment Trap: Accumulated silt shall be removed and the basin shall be regarded to its original dimensions at such point that the capacity of the impoundment has been reduced to one-half of its original storage capacity. The removed sediment shall be stockpiled or redistributed in areas that are protected from erosion. 5. Sediment Basin: Inspect frequently to check for damage and to ensure obstructions are not diminishing the effectiveness of the structures. Sediment shall be removed and the basin shall be regarded to its original dimensions at such point that the capacity of the impoundment has been reduced to 20% of its original storage capacity. The removed sediment shall be stockpiled or redistributed in areas that are protected from erosion. 6. Silt Fence: Removal of built-up sediment will occur when the sediment reaches one-third the height of the fence. 7. Stabilized Construction Entrance: Periodic regarding and top dressing with additional stones. 8. Vegetation: Protect newly seeded areas from excessive runoff and traffic until vegetation is established. Establish a watering and fertilizing schedule. 9. Good Housekeeping: Litter, construction debris, and construction chemicals exposed to stormwater shall be prevented from becoming a pollutant source for stormwater discharges through screening of outfalls and daily pickup of litter. In the event that sediment escapes the construction site, off-site accumulations of sediment must be removed at a frequency sufficient to minimize adverse impacts. An example of this may be the situation where sediment has washed into the street and could be carried into the storm sewers by the next rainfall and/or pose a safety hazard to users of public streets. Material Handling and Spill Prevention Discharge of hazardous substances or oil into stormwater is subject to reporting requirements. In the event of a spill of a hazardous substance, the operator is required to notify the National Response Center (1-800-424-8802) to properly report the spill. In addition, the operator shall submit a written description of the release (including the type and amount of material released, the date of the release, the circumstances of the release, and the steps to be taken to prevent future spills) to the local MS-4. 1ST In 11111111EIN V Ae4/1747 ■•■•■■■,•7407 .mii //7 VAStfe 1 r V A ri" SOILS MAP Br Brookston silty clay loam- this soil is dark colored, silty in texture and on depressional uplands. It is deep and very poorly drained with moderate permeability. It has high available water for plant growth and high organic matter content. It has compact till starting at a depth of 40 to 60 inches. The main soil features that affect the urban development uses are seasonal high water table, high potential frost action, moderate shrink-swell potential, moderate permeability and ponded surface water. Because of these engineering limitations this site will be constructed as follows. Weston Pointe, being a multifamily development within the jurisdiction of The City of Carmel and Hamilton County will have to abide by the current Subdivision Control Ordinance. This ordinance requires that we have an artificially drained site and that the buildings within this development be well above the 100yr elevation of the proposed detention basins and therefore be protected from flooding. All buildings will be of large slab type construction. In cases where a high water table is present special footings shall be constructed. All roads will have adequate sub-base. All sanitary sewers shall be public and therefore no septic systems shall be allowed Crosby silt loam, 0-3 percent slopes- this soil is light colored, silty in texture and on sloping uplands. It is deep and somewhat CrA poorly drained with slow permeability. It has high available water for plant growth and medium organic matter content. The soil has compact till starting at a depth between 20 -40 inches. The main soil features that affect urban development uses are seasonal high water table, moderate shrink-swell potential, high potential frost action and slow permeability. Because of these engineering limitations this site will be constructed as follows. Weston Pointe, being a multifamily development within the jurisdiction of The City of Carmel and Hamilton County will have to abide by the current Subdivision Control Ordinance. This ordinance requires that we have an artificially drained site and that the buildings within this development be well above the 100yr elevation of the proposed detention basins and therefore be protected from flooding. All buildings will be of large slab type construction. In cases where a high water table is present special footings shall be constructed. All roads will have adequate sub-base. All sanitary sewers shall be public and therefore no septic systems shall be allowed Because of these engineering limitations this site will be constructed as follows. The foundations and footings used in this development shall be designed to include foundation drain tiles as to help prevent structural damage from shrinking and swelling and low strength. There will be no septic fields in this development. All roads will have adequate sub-base. Grading and Drainage Landscaping Typical Stormwater-Quality 1. Fill geotextile bags approximately half full with 2 to 3 inch stone or mulch. 2. At a position downslope of the lot and upslope of the inlet, lay bags tightly in a row curving upslope from curb and away from inlet. 3. Overlap bogs onto the curb and extend a min- imum of 3 feet into the street. 4. For additional layers, overlap bags with the row beneath, and leave a one-bag gap in the middle of the top row to serve as a spillway. 5. Place bags in an arc around curb inlets that are in a sump position. 6. Set up safety/traffic barriers to keep vehicles from hitting bags, causing possible injury. 7. Inspect and repair as needed, and remove any accumulated sediments after every storm. Design Considerations Relative to Stormwater Quality NOT-TO-SCALE Runoff Bags overlap onto the curb Gap between bags acts as a spillway CURB INLET PROTEC110N DETAIL Compliance of the site with the General Construction Permit remains the responsibility of all operators that have submitted an NOI until such time as th have submitted a Notice of Termination (NOT). The permittee's authorization to discharge under the General Construction Permit terminates at midnight of the day the NOT is signed. All permittees must submit an NOT within thirty (30) days after one or more of the following conditions have been met: 1. Final stabilization has been achieved on all portions of the site for which the permittee was responsible. 2. Another operator/permittee has assumed control over all areas of the site that hove not been finally stabilized. 3. In residential construction operations, temporary stabilization has been completed and the residence has been transferred to the homeowner. 815 EROSION AND SEDIMENT CONTROL SPECIFICATIONS FOR INDIVIDUAL BUILDING LOTS See sheet C302 for details. Pollutant Source: Passenger vehicles, delivery vehicles, and trucks Type of Pollutant: Oil, gasoline, diesel fuel, any hydrocarbon associated with vehicular fuels and lubricants, grease, antifreeze, windshield cleaner solution, broke fluid, brake dust, rubber, glass, metal and plastic fragments, grit, road de-icing materials Pollutant Source: Residence Type of Pollutant: Cleaning solutions or solvents, leaks from HVAC equipment, grit from roof drainage, aggregate or rubber fragments from roofing system Pollutant Source: Roadway Type of Pollutant: Any pollutant associated with vehicular sources, grit from asphalt wearing surface, bituminous compounds from periodic maintenance (sealing, resurfacing and patching), pavement de-icing materials, paint fragments from parking stall stripes, concrete fragments, wind-blown litter from off-site sources, and elevated water temperatures from contact with impervious surfaces Pollutant Source: Trash dumpster Type of Pollutant: Cleaning solutions or solvents, litter (paper, plastic, general refuse associated with distributions operations), uneaten food products, bacteria S. Cl DESCRIPTION OF POLLUTANTS AND THEIR SOURCES ASSOCIATED WITH THE PROPOSED LAND USE The proposed land use will consist of single family residential houses. The pollutants and sources of each pollutant normally expected from these types of land uses are listed below: Pollutant Source: Lawn and landscape areas Type of Pollutant: Fertilizers, soil, organic material (leaves, mulch, grass clippings) and pesticides The anticipated pollution sources are the vehicles that will use these future facilities, including both truck and passenger vehicle traffic. Possible pollutants include oil, gasoline, anti-freeze and other pollutants associated with vehicular traffic. C2 SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION Stormwater quality will be handled with two different measures. The first measure will be the swales, catch basin storm sewer inlets draining to the proposed pond. The final stormwater quality measure will be the installation of trees, shrubs and grasses with the landscaping phase of the project. These landscaping items will help to reduce sediment runoff from the site. Please see "Approved" landscape plan for locations and types of trees and shrubs used. C3 DESCRIPTION OF PROPOSED POST-CONSTRUCTION STORMWATER QUALITY MEASURES All paved areas are collected by a storm sewer system to prevent the possibility of erosion in proposed swales. Additionally, paved areas are graded between 0.50-percent to 2.5-percent slope to reduce velocity. The roof drains from future buildings will be directed by underground piping to storm sewers. This will eliminate concentrated flow from downspouts that could erode lawn areas adjacent to the building. Topsoil will be placed in lawn areas and then seeded with grass and graded at the flattest slope possible to minimize overland flow velocity. In no cases will lawn areas exceed 3:1 slope. A extensive landscape plan has been put together in the greenspace on-site. Additionally, the grassy areas will provide additional areas for stormwater to infiltrate. The use of proposed trees will also provide additional cover on site. This project does contain plans for installation of post-construction stormwater quality Best Management Practices (BMP) as indicated above. A description of some additional storm water quality BMP's that may be incorporated into the project in the future are as follows. The feasibility of applying any of these practices to a particular project is a complicated decision-making process that involves input from the owner and regulatory agencies. In addition, each local authority will dictate design criteria and practices that may vary widely from one jurisdiction to the next. Therefore, the use of any of BMP's in the list is speculative. The fact that a BMP is listed should not be understood to mean that the BMP could have been installed at this site; rather, its inclusion in the list means only that it might have been installed at this project or that it should be considered for a similar project in the future. Furthermore, the lack of any of the following stormwater quality measures in this plan is not an admission of errors, omissions, or negligence on the part of the engineer or owner. BMP's are methods to reduce stormwater pollutants Stormwater Ponds. The measures incorporated into this design are catch basins as required by the City of Carmel. Good Housekeeping measures Good Housekeeping measures such as regular street sweeping, installation of trash receptacles, and reduction in fertilizer overspray can be incorporated by the owner and/or occupant. C4 LOCATION, DIMENSIONS, SPECIFICATIONS, AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE The following items are stormwater quality measures that will remain in place after constrtuction is completed and are considered to serve as post-construction stormwater quality BMP's. Landscaping A landscape plan that includes extensive plantings and greenspace will be forthcoming in the next phase of the project. C5 DESCRIPTION OF MAINTENANCE GUIDELINES FOR POST-CONSTRUCTION STORMWATER QUALITY MEASURES Maintenance requirements for the post-construction stormwater quality measures are described below: Lanc_p_gi ir EROSION CONTROL NOTES 3:1 5: \Legal \PlatinumSWPPP.doc LINE WITH GEOTEXTILE WOVEN FABRIC #53 STONE ■1111■ 4110 c7apc= `:7'41.7116:.....1111■dno•r .0.. 11. FUELING VEHICLE MAINTENANCE AREA SECTION "Z"- NOT-TO-SCALE 6' MIN. 6" EXCAVATED KEYWAY 6 EXCAVATED KEYWAY 6" MULCH BOTTOM OVER GEOTEXTILE pi cocREN WASHOUT DETAL WOVEN FABRIC NOT-TO-SCALE Landscaping shall be fertilized at the time of installation with pellets buried near the root ball. Subsequent tree fertilizations shall not be surface applied. Tree spikes or similar measure shall be used. For the first two years after installation, the landscaping shall be watered the equivalent of 1" of rainfall once per week if adequate rainfall was not received. After two years, water as necessary in dry season. Lawn shall be mowed at a height of not less than 3" to increase root mass. Lawn shall not be fertilized more that twice per year and shall be immediately watered into the soil after application. uJ 0 DRAWN BY: BAH 0 SHEET NO. v- ro 0 Li a) 0 S Sc A JOB NO 52605CTX 0 ON OC) U_ F- CHECKED BY: EEF LLJ C3O2 CC D A A B B THIS SHEET TO BE USED FOR EROSION CONTROL ONLY. STABILIZATION PRACTICE PERMANENT SEEDING DORMANT SEEDING SEEDING SODDING MULCHING JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEPT. OCT. NOV. DEC. F** Seedbed Preparation for Permanent Seeding SEASONAL SOIL PROTECTION CHART A /////8/ 1. Test soil to determine pH and nutrient levels. (Contact you county SWCD or Cooperative Extension office for assistance and soils information, including available testing services.) 2. If soil pH is unsuitable for the species to be seeded, apply lime according to test recommendations. 3. Fertilize as recommended by the soil test. If testing was not done, consider applying 400-600 lbs./acre of 12-12-12 analysis, or equivalent, fertilizer. 4. Till the soil to obtain a uniform seedbed, working the fertilizer and lime into the soil 2-4 in. deep with a disk or rake operated across the slope. KENTUCKY BLUE GRASS 40 lbs./AC.: CREEPING RED FESCUE 40 lbs./AC.: PLUS 2 TONS STRAW MULCH/AC. OR ADD ANNUAL RYEGRASS 20Ibs>/AC. B KENTUCKY BLUE GRASS 60 lbs./AC.: CREEPING RED FESCUE 60 lbs./AC.: PLUS 2 TONS STRAW MULCH/AC. OR ADD ANNUAL RYEGRASS 30Ibs>/AC. C SPRING OATS 3 BUSHEL/ACRE D WHEAT OR RYE 2 BUSHEL/ACRE E ANNUAL RYEGRASS 40 lbs./AC. (1 lb./1000 sq. ft.) F SOD G STRAW MULCH 2 TONS/ACRE-ANCHOR ALL MULCH BY CRIMPING OR TACKIFYING IRRIGATION NEEDED DURING JUNE, JULY, AND/OR SEPT. IRRIGATION NEEDED FOR 2 TO 3 WEEKS AFTER APPLYING SOD Rule 5 requires all disturbed areas likely to be idle for 15 day shall have surface stabilization applied. When weather conditions prevent rapid germination of grass, then 2t/ac mulch will be used to ensure ground stabilization requirements are met. Drop Inlet Protection Basket It is the intent of this device to detain water for the purpose of allowing suspended solids in the water to settle out before the water enters the storm structure. Some filtering will occur as water passes through the device. The bottom of this device is to seal against the flat outer part of the casting. The overall dimension of the basket shall be no smaller than the water inlet perforations in the casting and no larger than the outer din of the casting. The height shall be 15" The basket frame shall be welded wire mesh rolled or bunt and welded to itself to fit the casting_ The wire size shall he no smaller than .149" dia and openings no larger than 18 sq in. It is important that the bottom of the wire frame he smooth so as not to allow any leakage betw een the basket and casting. The top of the basket shall be open to prevent flooding during heavy storm events. Fabric shall be woven polypropylene allowing 15-25ga1lmin/sq in. If non-woven fabric is used, the maintenance intervals should be increased to replace silt laden fabric. The fabric shall be attached to the frame and tblded under the bottom to help seal against the casting. This device should be used in conjunction with other Best Ntanagemaint Practices to maximize the efficiency of the erosion control plan. Suppliers for this product include: Lakeside Supply Inc 317) 281-2661, Turfgrass Inc (317) 894-3276. OLD MERIDIAN SECTION ONE A part of the Southeast Quarter of Section 26, Township 18 North, Range 3 East, Hamilton County, Indiana, more particularly described as follows: Commencing at the Northeast corner of said Quarter Section being marked by a xxxxxxxx; thence South 89 degrees 08 minutes 21 seconds West along the North line of said Quarter Section, 1,351.75 feet; thence South 00 degrees 18 minutes 29 seconds East 422.17 feet to the POINT OF BEGINNING of this description; thence South 89 degrees 45 minutes 27 seconds East 436.11 feet to a point on a curve concave southerly, the radius point of said curve being South 00 degrees 01 minutes 06 seconds West 172.85 feet from said point; thence easterly along said curve 106.68 feet to the point of tangency of said curve, said point being North 35 degrees 22 minutes 44 seconds East 172.85 feet from the radius point of said curve; thence South 54 degrees 50 minutes 42 seconds East 285.44 feet; thence North 80 degrees 24 minutes 17 seconds East 35.51 feet; thence North 35 degrees 39 minutes 16 seconds East 1.59 feet; thence South 54 degrees 50 minutes 42 seconds East 60.00 feet; thence South 35 degrees 39 minutes 16 seconds West 713.43 feet; thence North 54 degrees 20 minutes 44 seconds West 60.00 feet; thence North 09 degrees 20 minutes 44 seconds West 49.50 feet; thence North 54 degrees 20 minutes 44 seconds West 39.02 feet to the point of curvature of a curve concave northeasterly, the radius point of said curve being North 35 degrees 39 minutes 16 seconds East 225.00 feet from said point; thence northwesterly along said curve 77.23 feet to the point of tangency of said curve, said point being South 55 degrees 19 minutes 15 seconds West 225.00 feet from the radius point of said curve, said point also being the point of curvature of a curve concave southerly, the radius point of said curve being South 55 degrees 19 minutes 15 seconds West 25.00 feet from said point; thence westerly along said curve 31.54 feet to the point of tangency of said curve, said point being North 16 degrees 57 minutes 52 seconds West 25.00 feet from the radius point of said curve to a point on a curve concave northerly, the radius point of said curve being North 16 degrees 55 minutes 32 seconds West 175.81 feet from said point; thence westerly along said curve 50.71 feet to the point of tangency of said curve, said point being South 00 degrees 23 minutes 56 seconds East 175.81 feet from the radius point of said curve; thence South 89 degrees 38 minutes 23 seconds West 294.34 feet to the point of curvature of a curve concave southerly, the radius point of said curve being South 00 degrees 21 minutes 37 seconds East 125.00 feet from said point; thence westerly along said curve 47.15 feet to the point of tangency of said curve, said point being North 21 degrees 58 minutes 14 seconds West 125.00 feet from the radius point of said curve; thence South 68 degrees 01 minutes 46 seconds West 35.95 feet; thence North 21 degrees 58 minutes 14 seconds West 50.00 feet; thence North 68 degrees 01 minutes 46 seconds East 17.02 feet to a point on a curve concave westerly, the radius point of said curve being North 80 degrees 18 minutes 08 seconds West 20.00 feet from said point; thence northerly along said curve 11.48 feet to the point of tangency of said curve, said point being North 66 degrees 48 minutes 41 seconds East 20.00 feet from the radius point of said curve; thence North 23 degrees 11 minutes 20 seconds West 12.49 feet to the point of curvature of a curve concave easterly, the radius point of said curve being North 66 degrees 48 minutes 40 seconds East 162.00 feet from said point; thence northerly along said curve 40.89 feet to the point of tangency of said curve, said point being South 81 degrees 16 minutes 20 seconds West 162.00 feet from the radius point of said curve; thence North 08 degrees 43 minutes 39 seconds West 129.11 feet; thence North 81 degrees 16 minutes 21 seconds East 24.00 feet; thence North 89 degrees 38 minutes 23 seconds East 151.64 feet to a point on a curve concave northeasterly, the radius point of said curve being North 00 degrees 21 minutes 37 seconds West 70.00 feet from said point; thence northwesterly along said curve 110.04 feet to the point of tangency of said curve, said point being South 89 degrees 42 minutes 34 seconds West 70.00 feet from the radius point of said curve; thence North 00 degrees 17 minutes 27 seconds West 46.60 feet to the point of curvature of a curve concave southeasterly, the radius point of said curve being North 89 degrees 42 minutes 33 seconds East 70.00 feet from said point; thence northeasterly along said curve 110.60 feet to the point of tangency of said curve, said point being North 00 degrees 14 minutes 21 seconds East 70.00 feet from the radius point of said curve; thence North 89 degrees 45 minutes 38 seconds West 153.92 feet; thence North 00 degrees 14 minutes 33 seconds East 32.87 feet; thence North 89 degrees 04 minutes 09 seconds East 1175.04 feet; thence North 00 degrees 18 minutes 29 seconds West 196.26 feet to the place of beginning, containing 12.004 acres, more or less. FENCE POST (2x2 HARDWOOD POST) SILT FENCE MATERIAL FENCE POST SHOULD BE BURIED 1' BELOW GROUND SURFACE. Phr teal property Fill aring efficiency Tensile strength at 20% elongation: Standard strength Extra strengt h Slurry flow rate Water flow rate UV resistance 6'-8" GROUND SURFACE I_ SILT FENCE MATERIAL SHOULD BE BURIED 6" BELOW GROUND SURFACE. SILT FENCE DETAIL NOT-TO-SCALE Exhlblt 3.74-0. SpocificatIona minonums for 511t Fence Fain ie. Woven fabric 30 lbs./linear in. lbs./lineat 0.3 gal./min./suit. '15 gal,/mio./sq,ft. 70% Non-woven fabric 85% 50 lbs./linear in. 70 lbs./linear in. 4.5 gal./rnin./sq.ft. *27.0 g41./min,/sySl. R5% --K 3' A 1 STAPLE PER SQ. YD. 300 275 250 225 200 I- 175 (0 Li) 150 IA 125 75 50 25 FT. 2"-3" WASHED STONE (INDOT CA. #2) PARK PLACE AT THE PRAIRIES A2 11" x 17" PLAT This drawing is attached in the 0 M Manual. A7 HYDROLOGIC UNIT CODE (HUC) 005120201090030 A8 STATE AND FEDERAL WATER QUALITY PERMITS None are required for this project. A15 ADJACENT LAND USE Upstream watershed: Currently grassy weeds Site is zoned P.U.D. North: Residential East: Commercial South: Residential/Commercial West: Residential A22 EXISTING SITE TOPOGRAPHY Refer to Sheets C100. A23 PROPOSED FINAL SITE TOPOGRAPHY Refer to Sheets C200. STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN GREEN EROSION CONTROL BLANKETS. STAPLE PATTERNS WILL VARY DEPENDING UPON SLOPE LENGTH, SLOPE GRADE, SOIL TYPE AND AVERAGE ANNUAL RAINFALL. 4:1 3:1 1-1/2 STAPLES PER SO. YD. 2:1 A4 VICINITY MAP A copy of the vicinity map is shown on the Title Sheet. 1:1 SLOPE GRADIENT NOT-TO-SCALE LOW MED/HIGH FLOW FLOW CHANNEL CHANNEL AND SHORELINE 2 STAPLES PER SQ. YD. EROSION CONTROL BLANKET STAPLE PATTERN GUIDE NOT- TO-SCALE 2C-0" MIN. WIDTH CONSTRUCTION ENTRANCE DETAIL SITE NAME The area scheduled for construction is known as "Old Meridian Place, Section One" (hereinafter referred to as the "Project"). PROJECT LOCATION The property is located on the South side 131st Street and along the West Side of Old Meridian Latitude: 39• 58' 35" N Longitude: 86° 08' 58" W OWNER'S INFORMATION Name: Centex Homes Address: 8440 Allison Pointe Boulevard, Suite 200, Indianapolis, Indiana 46250 Representative: Tim McMahon Title: President Telephone: (317) 915-2200 Facsimile: (317) 849-3486 OPERATOR'S INFORMATION Name: Centex Homes Address: 8440 Allison Pointe Boulevard, Suite 200, Indianapolis, Indiana 46250 Representative: Todd Schaefer Title: Land Development Operations Manager Telephone: (317) 806-2920 Ex. 249 Facsimile: (317) 849-3486 NOTICE OF INTENT All parties defined as owners or operators must submit a Notice of Intent (N01) at least 48 hours prior to commencement of on-site construction activities. Submittal of late NOI's is not prohibited; however, authorization under the construction general permit is only for discharges that occur after permit coverage is graned. Unpermitted discharges may be subject to enforcement actions by the EPA. For the purposes of this permit, an operator is defined as any party meeting either of the following requirements: a) The party has operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications. b) The party has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other permit conditions. A3 PROJECT NARRATIVE This project includes the construction of 49 Lots in Old Meridian Place, Section One, and consists of approximately 12.004 acres. Construction will include pad grades for the buildings, associated roadways, landscaping, and drainage infrastructure. A5 LEGAL DESCRIPTION OF PROJECT SITE The site is a part of the following tract of land as described on the Title Sheet. 3.5 STAPLES PER SQ. YD. A6 LOCATION OF ALL LOTS AND PROPOSED SITE IMPROVEMENTS The site will be subdivided as shown on the Site Plans. Please refer to sheet C200 for detail. A9 SPECIFIC POINT WHERE STORMWATER DISCHARGE WILL LEAVE THE SITE Stormwater discharge will leave the site at the Northeast side of the site. This will discharge into existing lakes and piping systems that eventually will discharge into the W.R. Fertig Regulated Drain. A10 LOCATION AND NAME OF ALL WETLANDS. LAKES. AND WATERCOURSES ON AND ADJACENT TO THE SITE There are no wetlands on the site. All IDENTIFICATION OF ALL RECEIVING WATERS The W.R. Fertig Regulated Drain is the main receiving water for the project area. Al2 IDENTIFICATION OF ALL POTENTIAL DISCHARGES TO GROUND WATER Potential discharges into the groundwater may have occurred in the underground storage systems. A13 100-YEAR FLOODPLAINS. FLOODWAYS, AND FLOODWAY FRINGES The site does not lie within any floodplain, floodway, or floodway fringe. The information was obtained from Flood Insurance Rate Map Panel 18057CO207F for Hamilton County, Indiana. A14 PRE-CONSTRUCTION AND POST-CONSTRUCTION ESTIMATE OF PEAK DISCHARGE Allowable 2-year discharge: 14.99 cfs Post-construction 10-year discharge: 14.00 cfs. 10-year discharge: 31.84 cfs 100-year discharge: 18.96 cfs. A16 LOCATIONS AND APPROXIMATE BOUNDARIES OF ALL DISTURBED AREAS Approximate boundaries of disturbed areas are as identified on Sheets C200. A17 IDENTIFICATION OF EXISTING VEGETATIVE COVER As the site is mainly farmland, the existing vegetative cover consists mostly of grass weeds. A18 SOILS MAP INCLUDING SOIL DESCRIPTIONS AND LIMITATIONS Soil information from the Hamilton County Soil Survey is shown on Sheet C302. Sheet C302 includes a copy of the soil map, descriptions of the soils. A19 LOCATIONS, SIZE. AND DIMENSIONS OF PORPOSED STORMWATER SYSTEMS Locations of stormwater systems: Sheets C200 and C600-C601. Size of storm sewers: Sheet C600-C601. Details of storm inlets and manholes: Sheets C600-C601 and C801. A20 PLANS FOR ANY OFF-SITE CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PROJECT There are no offsite Drainage construction activities associated with the project. A21 LOCATIONS OF PROPOSED SOIL STOCKPILES AND/OR BORROW/DISPOSAL AREAS There is not a soil stockpile area located on this site. 20' CONSTRUCTION SEQUENCE FOR BUILDING SITE EROSION CONTROL PRACTICES SUBSOIL CD STOCKPILE AREA TO BE TOP- SOILED, SEEDED, AND MULCHED BY OWNER AT COMPLETION OF CONSTRUCTION. PALIMAR IS TO BE USED IF GRASS GROWTH IS NOT POSSIBLE. SIDE YARD DRAINAGE SWALE SIDE- WALK 1. Structural fill 2. Road base 3. Concrete drainage pipe 4. Concrete culverts 5. Precast concrete manholes DROP INLET PROTECTION BASKET 0 >0 0 0 CD HOUSE re STREET TO BE CLEANED AT END OF EVERY WORKING DAY CURB INLET PROTECTION REAR YARD DRAINAGE SWALE GARAGE 0 0 0 PINMEN1111/12111111••••1111111111.11•11111111/ III•111111101'S WSW, NOP ■■••191111111111=111 111.EqS NOTES: 1. EROSION/ SEDIMENT CONTROL MEASURES MUST BE FUNCTIONAL AND BE MAINTAINED THROUGHOUT CONSTRUCTION. 2. MAINTAIN POSITIVE DRAINAGE AWAY FROM THE STRUCTURE. 3. CONTRACTOR TO CLEAN STREETS WHEN DIRT AND CONSTRUCTION DEBRIS IS EVIDENT. 4. PERIMETER PROTECTION SHOULD BE INSTALLED BEFORE EXCAVATION OF BASEMENT/FOUNDATION HAS BEGUN. PERIMETER PROTECTION ON LOTS SHALL REMAIN IN PLACE UNTIL THE LOT IS STABILIZED WITH AT LEAST 70% COVER. ALL TRASH AND CONSTRUCTION DEBRIS SHALL BE DISPOSED PROPERLY INTO AN ENCLOSED WASTE RECEPTACLE. STORM WATER POLLUTION PREVENTION NOTES: (A) All storm water quality measures, including erosion and sediment control, necessary to comply with this rule must be implemented in accordance with the plan and sufficient to satisfy subsection (B) Provisions for erosion and sediment control on individual building lots regulated under the original permit of a project site owner must include the following requirements: (1) The individual lot operator, whether owning the property or acting as the agent of the property owner, shall be responsible for erosion and sediment control requirements associated with activities on individual lots. (2) Installation and maintenance of a stable construction site access. (3) Installation and maintenance of appropriate perimeter erosion and sediment control measures prior to land disturbance. (4) Sediment discharge and tracking from each lot must be minimized throughout the land disturbing activities on the lot until permanent stabilization has been achieved. (5) Clean-up of sediment must be redistributed or disposed of in a manner that is in compliance with all applicable statutes and rules. (6) Adjacent lots disturbed by and individual lot operator must be repaired and stabilized with temporary or permanent surface stabilization. (7) For individual residential lots, final stabilization meeting the criteria in section 7(b)(20) or this rule will be achieved when the individual lot operator: (A) completes final stabilization; or (B) has installed appropriate erosion and sediment control measures for an individual lot prior to occupation of the home by the homeowner and has informed the homeowner of the requirement for, and benefits of, final stabilization. 7(b)(20) Final stabilization of a project site is achieved when: (A) all land disturbing activities have been completed and a uniform (for example, evenly distributed, without large bare areas) perennial vegetative cover with a density of seventy percent (70%) has been established on all unpaved areas and areas not covered by permanent structures, or equivalent permanent stabilization measures have been employed; and (B) construction projects on land used for agricultural purposes are returned to its preconstruction agricultural use or disturbed areas, not previously used for agricultural production, such as filter strips and areas that are not being returned to their preconstruction agricultural use, meet the final stabilization requirements in clause (A). INDIVIDUAL LOT STORM WATER POLLUTION PREVENTION DETAIL NOT-TO-SCALE 81 DESCRIPTION OF POTENTIAL POLLUTANT SOURCES ASSOCIATED WITH CONSTRUCTION ACTIVITIES The following potential pollutant sources may be associated with construction activities on site: 1. Material storage areas (more specifically described below) 2. Construction waste material 3. Fuel storage areas and fueling stations 4. Exposed soils 5. Leaking vehicles and equipment 6. Sanitary waste from temporary toilet facilities 7. Litter 8. Windblown dust 9. Soil tracking off site from construction equipment The following construction materials will be staged or stored on site at various points during development of the site. 82 SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION RELATIVE TO LAND-DISTURBING ACTIVITIES The following is a list in sequence of construction activities to control soil erosion: 1. Construction on the site being started. Contractor and/or Developer to notify IDEM and City of Carmel The contractor shall schedule a Pre-construction meeting with the City of Carmel prior to any 48 hours prior to construction beginning. 2. The construction entrance installed. 3. Maintenance and Refueling area constructed 4. Concrete washout area constructed 5. Posting information area shall be constructed. All items, as outlined in the in the O&M manual for Post Constuction water quality measures shall be placed in this area. 6. Perimeter Silt fencing to be installed. 7. Grade the site (sides of swales, mounds and ponds to be stabilized with erosion control blankets and to be seeded and mulched immediately upon completion). If the site remains inactive for a period of 15 days, stabilization is required to take place in the form of temporary seeding, mulch or spray on palimar. For temporary seeding, the contractor shall utilize a fast growing seed of either oats, annual ryegrass, wheat or rye depending on time of year. Disturbed areas should be kept to a minimum at all times. 8. Storm inlets are to be protected immediately after installation with Drop Inlet Protection. 9. Contractor shall control mud accumulation on all streets surrounding project by installing stone surface at all locations where construction traffic leaves the site. Dust shall be kept to a minimum by utilizing sprinkling, Calcium Chloride, Vegetative cover, spray on adhesives or other approved methods. 10. Maintain all filters and traps for inlets during constructio to prevent any blockages from accumulated sediment. Additional seeding and straw bales may be required during construction as specific by Engineer or City of Carmel. Payment for additional straw bales shall be at the contractor's expense. 11. Contractor shall install all sanitary sewers, storm sewers, subsurface drains, curbs, pavement and water mains. Disturbed areas will be stabilized after the storm and sanitary are installed. Disturbed areas will be stabilized after curbs, SSD and pavement are completed unless utilities are starting construction within 15 days of completing the curbs. Stabilize disturbed areas after the utilities are installed. 12. Complete Landscaping and sedding all remaining disturbed areas and remove all BMP's when areas are stabilized. B3 STABLE CONSTRUCTION ENTRANCE LOCATIONS AND SPECIFICATIONS Construction entrances will be in place prior to this phase of construction. Entrances are shown for reference on Sheets C300-C302. B4 SEDIMENT CONTROL MEASURES FOR SHEET FLOW AREAS Sheet flow areas will be protected by seed and mulch or hydroseeding. Erosion control blankets will be installed on sloped areas where the slope exceeds 6:1 (horizontal to vertical). Silt fencing will be utilized to minimize runoff from construction areas as identified on Sheets C300-C302. Refer to Sheet C302 for details. B5 SEDIMENT CONTROL MEASURES FOR CONCENTRATED FLOW AREAS Concentrated flow in diversion swales will be protected by rock check dams. None are needed on this site. B8 STORMWATER OUTLET PROTECTION SPECIFICATIONS Riprap revetment will be used at each of the stormwater outlets where not connecting into existing manholes. See sheets C300-C302 for additional information. 511 TEMPORARY SURFACE STABILIZATION METHODS APPROPRIATE FOR EACH SEASON Refer to Sheet C302, within the Seasonal Soil Protection Chart. 512 PERMANENT SURFACE STABILIZATION SPECIFICATIONS Refer to Sheet C302, within the Seasonal Soil Protection Chart. I313 MATERIAI HAND1IN_G__AMI-SPIJ L PREVENTION PLAN 5olid Waste Disposal No solid material, including building materials, is permitted to be discharged to surface waters or buried on site. All solid waste materials, including disposable materials incidental to the construction activity, must be collected in containers or closed dumpsters. The collection containers must be emptied periodically and the collected material hauled to a landfill permitted by the State and/or appropriate local municipality to accept the waste for disposal. Dumpsters and port-o-lets are not to be placed in the street. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper solid waste procedures. 0 TOPSOIL STOCKPILE EXISTING CURB AND GUTTER 86 STORM SEWER INLET PROTECTION MEASURE LOCATIONS AND SPECIFICATIONS The contractor has the option to use one of several storm sewer inlet protection methods, depending on the inlet location and the stage of construction. Refer to Sheet C300-C301 for locations and refer to Sheet C302 for details. Manufactured products such as the Dandy Bag or Catch-All products may also be used at the contractor's discretion. Manufactured products shall be installed in accordance with the manufacturer's specifications. Straw bales or filter fabric on, under, or around inlet grates will not be allowed as inlet protection measures. Coconut fiber logs are recommended. B7 RUNOFF CONTROL MEASURES Silt fence will be installed along portions of this project to prevent run off. see sheets C300-C302 for location. B9 GRADE STABILIZATION STRUCTURE LOCATIONS AND SPECIFICATIONS Erosion control blankets will be utilized as grade-stabilization structures. Refer to Sheets C300-C302 for additional information. 010 LOCATION. DIMENSIONS. SPECIFICATIONS. AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE Existing detention pond shall be used to extend detention times to achieve stormwater quality. All other stormwater quality measures can be found on Sheets C300-C302. CONSTRUCTION ENTRANCE/ EXIT Hazardous Waste EROSION CONTROL PLAN LEGEND 1 1 PROPERTY LINE/ DRAINAGE SWALE EXISTING DRAINAGE FINISHED DRAINAGE TREE CONSERVATION SILT FENCING GRAVEL ENTRANCE/ EXIT PAD CURB INLET PROTECTION DROP INLET PROTECTION SOIL SALVAGE AND UTILIZATION PERMANENT SEEDING A18. E Juni. Due. mien RES 1 usAwa, Whenever possible, minimize the use of hazardous materials and generation of hazardous wastes. All hazardous waste materials will be disposed in the manner specified by federal, state, or local regulations or by the manufacturer. Use containment berms in fueling and maintenance areas and where potential for spills is high. A foreman or supervisor should be designated in writing to oversee, enforce and instruct construction workers on proper hazardous waste procedures. The location of any hazardous waste storage areas should be indicated on the stormwater pollution prevention plan by the operator following on-site location of the facility. Dust Control/Off-site Vehicle Tracking During construction, water trucks should be used, as needed, by each contractor or subcontractor to reduce dust. After construction, the site should be stabilized to reduce dust. Construction traffic should enter and exit the site at a Construction Entrance with a rock pad or equivalent device. The purpose of the rock pad is to minimize the amount of soil and mud that is tracked into existing streets. If sediment escapes the construction site, off-site accumulations of sediment must be removed at a frequency sufficient to minimize offsite impacts. Sanitarv/Septic Contractors and subcontractors must comply with all state and local sanitary sewer, portable toilet, or septic system regulations. Sanitary facilities shall be provided at the site by each contractor or subcontractor throughout construction activities. The sanitary facilities should be utilized by all construction personnel and be serviced regularly. All expenses associated with providing sanitary facilities are the responsibility of the contractors and subcontractors. The location of any sanitary facilities should be indicated on the stormwater pollution prevention plan by the operator following on-site location of said facilities. Water Source Water used to establish and maintain grass, to control dust, and for other construction purposes must originate from a public water supply or private well approved by the State or local health department. Equipment Fueling. and Storage Areas Equipment fueling, maintenance, and cleaning should only be completed in protected areas (i.e., bermed area). Leaking equipment and maintenance fluids will be collected and not allowed to discharge into soil where they may be washed away during a rain event. SMILE Equipment wash down (except for wheel washes) should take place within an area surrounded by a berm. The use of detergents is prohibited. Hazardous Material Storage Chemicals, points, solvents, fertilizers, and other toxic or hazardous materials should be stored in their original containers (if original container is not resealoble, store the products in clearly labeled, waterproof containers). Except during application, the containers should be kept in trucks or in bermed areas within covered storage facilities. Runoff containing such materials shall be collected, removed from the site, and disposed of in accordance with the federal, state, and local regulations. As may be required by federal, state, or local regulations, the Contractor should have a Hazardous Materials Management Plan and/or Hazardous Materials Spill Prevention Program in place. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper hazardous materials storage and handling procedures. The location of any hazardous material storage areas should be indicated on the stormwater pollution prevention plan by the operator following on-site location of the storage areas. Spill Response Directions In the event of small spills, please contact the construction supervisor. In the event of spills that require removal of soils or other materials, please contact the construction supervisor, developer, County Surveyor's Office and the Local Fire Department. In the event of spills that have potential groundwater or surface water contamination, please contact the construction supervisor, developer, County Surveyor's Office, Local Fire Department, IDEM, and the City of Carmel Utility Department. See 0 M Manual for all Emergency Number. B14 MONITORING AND MAINTENANCE GUIDELINES FOR EACH PROPOSED STORMWATER QUALITY MEASURE Inspection Schedule/Reoorting All impacted areas, as well as all erosion and sediment control devices, will be inspected every seven (7) calendar days and within 24 hours after a rainfall of 0.5 inch or greater until a NOT is issued. Inspection reports after rain events are to be submitted to the City of Carmel Engineering Department One, Civic Square, attention Storm Water Administrator. Inspections shall be conducted and a written report prepared, by a designated and qualified person familiar with the USEPA NPDES Storm Water General Permit, and the Project. Inspection reports shall be completed including scope of the inspection, name(s) and qualifications of personnel making the inspection, the date of the inspection, observations relating to the implementation of the SWPPP, and any actions taken as a result of incidents of noncompliance noted during the inspection. The inspection report should state whether the site was in compliance or identify any incidents of noncompliance. The contractor shall keep a copy of the inspection reports on site and permanently for a period of two years following construction. The on-site reports may be requested by inspections conducted by the local MS-4. Construction Entrance Locations where vehicles exit the site shall be inspected for evidence of off-site sediment tracking. Each contractor and subcontractor shall be responsible for maintaining the Construction Entrance and other controls. Material Storage Inspections Inspectors must evaluate areas used for storage of materials that are exposed to precipitation. The purpose is to ensure that materials are protected and/or impounded so that pollutants cannot discharge from storage areas. Off-site material storage areas used solely by the subject project are considered to be part of the project and must be included in the erosion control plans and the site inspection reports. Soil Stabilization Inspections Seeded areas will be inspected to confirm that a healthy stand of vegetation is maintained. The site has achieved final stabilization once all areas are covered with pavement of have a stand of vegetation with at least 70% of the background vegetation density. The density of 70% or greater must be maintained to be considered as stabilized. The operator or their representative will water, fertilize, and reseed disturbed areas as needed to achieve this goal. Erosion and Sediment Control Inspections All controls should be inspected at least once every seven (7) calendar days and following any storm event of 0.5 inch or greater. The following is a list of inspection/maintenance practices that will be used for specific controls: 1. Geotextiles/Erosion Control Mats: Missing or loose matting must be replaced or re-anchored. 2. Curb Inlet Protection shall be cleaned at least once per week and after every 0.5 inch rainfall event. 3. Mulching: Inspected for thin or bare spots caused by natural decomposition or weather-related events. Mulch in high traffic area should be replaced on a regular basis to maintain uniform protection. 4. Sediment Trap: Accumulated silt shall be removed and the basin shall be regarded to its original dimensions at such point that the capacity of the impoundment has been reduced to one-half of its original storage capacity. The removed sediment shall be stockpiled or redistributed in areas that are protected from erosion. 5. Sediment Basin: Inspect frequently to check for damage and to ensure obstructions are not diminishing the effectiveness of the structures. Sediment shall be removed and the basin shall be regarded to its original dimensions at such point that the capacity of the impoundment has been reduced to 20% of its original storage capacity. The removed sediment shall be stockpiled or redistributed in areas that are protected from erosion. 6. Silt Fence: Removal of built-up sediment will occur when the sediment reaches one-third the height of the fence. 7. Stabilized Construction Entrance: Periodic regarding and top dressing with additional stones. 8. Vegetation: Protect newly seeded areas from excessive runoff and traffic until vegetation is established. Establish a watering and fertilizing schedule. 9. Good Housekeeping: Litter, construction debris, and construction chemicals exposed to stormwater shall be prevented from becoming a pollutant source for stormwater discharges through screening of outfalls and daily pickup of litter. In the event that sediment escapes the construction site, off-site accumulations of sediment must be removed at a frequency sufficient to minimize adverse impacts. An example of this may be the situation where sediment has washed into the street and could be carried into the storm sewers by the next rainfall and/or pose a safety hazard to users of public streets. Material Handling and Spill Prevention Discharge of hazardous substances or oil into stormwater is subject to reporting requirements. In the event of a spill of a hazardous substance, the operator is required to notify the National Response Center (1-800-424-8802) to properly report the spill. In addition, the operator shall submit a written description of the release (including the type and amount of material released, the date of the release, the circumstances of the release, and the steps to be taken to prevent future spills) to the local MS-4. 1ST In 11111111EIN V Ae4/1747 ■•■•■■■,•7407 .mii //7 VAStfe 1 r V A ri" SOILS MAP Br Brookston silty clay loam- this soil is dark colored, silty in texture and on depressional uplands. It is deep and very poorly drained with moderate permeability. It has high available water for plant growth and high organic matter content. It has compact till starting at a depth of 40 to 60 inches. The main soil features that affect the urban development uses are seasonal high water table, high potential frost action, moderate shrink-swell potential, moderate permeability and ponded surface water. Because of these engineering limitations this site will be constructed as follows. Weston Pointe, being a multifamily development within the jurisdiction of The City of Carmel and Hamilton County will have to abide by the current Subdivision Control Ordinance. This ordinance requires that we have an artificially drained site and that the buildings within this development be well above the 100yr elevation of the proposed detention basins and therefore be protected from flooding. All buildings will be of large slab type construction. In cases where a high water table is present special footings shall be constructed. All roads will have adequate sub-base. All sanitary sewers shall be public and therefore no septic systems shall be allowed Crosby silt loam, 0-3 percent slopes- this soil is light colored, silty in texture and on sloping uplands. It is deep and somewhat CrA poorly drained with slow permeability. It has high available water for plant growth and medium organic matter content. The soil has compact till starting at a depth between 20 -40 inches. The main soil features that affect urban development uses are seasonal high water table, moderate shrink-swell potential, high potential frost action and slow permeability. Because of these engineering limitations this site will be constructed as follows. Weston Pointe, being a multifamily development within the jurisdiction of The City of Carmel and Hamilton County will have to abide by the current Subdivision Control Ordinance. This ordinance requires that we have an artificially drained site and that the buildings within this development be well above the 100yr elevation of the proposed detention basins and therefore be protected from flooding. All buildings will be of large slab type construction. In cases where a high water table is present special footings shall be constructed. All roads will have adequate sub-base. All sanitary sewers shall be public and therefore no septic systems shall be allowed Because of these engineering limitations this site will be constructed as follows. The foundations and footings used in this development shall be designed to include foundation drain tiles as to help prevent structural damage from shrinking and swelling and low strength. There will be no septic fields in this development. All roads will have adequate sub-base. Grading and Drainage Landscaping Typical Stormwater-Quality 1. Fill geotextile bags approximately half full with 2 to 3 inch stone or mulch. 2. At a position downslope of the lot and upslope of the inlet, lay bags tightly in a row curving upslope from curb and away from inlet. 3. Overlap bogs onto the curb and extend a min- imum of 3 feet into the street. 4. For additional layers, overlap bags with the row beneath, and leave a one-bag gap in the middle of the top row to serve as a spillway. 5. Place bags in an arc around curb inlets that are in a sump position. 6. Set up safety/traffic barriers to keep vehicles from hitting bags, causing possible injury. 7. Inspect and repair as needed, and remove any accumulated sediments after every storm. Design Considerations Relative to Stormwater Quality NOT-TO-SCALE Runoff Bags overlap onto the curb Gap between bags acts as a spillway CURB INLET PROTEC110N DETAIL Compliance of the site with the General Construction Permit remains the responsibility of all operators that have submitted an NOI until such time as th have submitted a Notice of Termination (NOT). The permittee's authorization to discharge under the General Construction Permit terminates at midnight of the day the NOT is signed. All permittees must submit an NOT within thirty (30) days after one or more of the following conditions have been met: 1. Final stabilization has been achieved on all portions of the site for which the permittee was responsible. 2. Another operator/permittee has assumed control over all areas of the site that hove not been finally stabilized. 3. In residential construction operations, temporary stabilization has been completed and the residence has been transferred to the homeowner. 815 EROSION AND SEDIMENT CONTROL SPECIFICATIONS FOR INDIVIDUAL BUILDING LOTS See sheet C302 for details. Pollutant Source: Passenger vehicles, delivery vehicles, and trucks Type of Pollutant: Oil, gasoline, diesel fuel, any hydrocarbon associated with vehicular fuels and lubricants, grease, antifreeze, windshield cleaner solution, broke fluid, brake dust, rubber, glass, metal and plastic fragments, grit, road de-icing materials Pollutant Source: Residence Type of Pollutant: Cleaning solutions or solvents, leaks from HVAC equipment, grit from roof drainage, aggregate or rubber fragments from roofing system Pollutant Source: Roadway Type of Pollutant: Any pollutant associated with vehicular sources, grit from asphalt wearing surface, bituminous compounds from periodic maintenance (sealing, resurfacing and patching), pavement de-icing materials, paint fragments from parking stall stripes, concrete fragments, wind-blown litter from off-site sources, and elevated water temperatures from contact with impervious surfaces Pollutant Source: Trash dumpster Type of Pollutant: Cleaning solutions or solvents, litter (paper, plastic, general refuse associated with distributions operations), uneaten food products, bacteria S. Cl DESCRIPTION OF POLLUTANTS AND THEIR SOURCES ASSOCIATED WITH THE PROPOSED LAND USE The proposed land use will consist of single family residential houses. The pollutants and sources of each pollutant normally expected from these types of land uses are listed below: Pollutant Source: Lawn and landscape areas Type of Pollutant: Fertilizers, soil, organic material (leaves, mulch, grass clippings) and pesticides The anticipated pollution sources are the vehicles that will use these future facilities, including both truck and passenger vehicle traffic. Possible pollutants include oil, gasoline, anti-freeze and other pollutants associated with vehicular traffic. C2 SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION Stormwater quality will be handled with two different measures. The first measure will be the swales, catch basin storm sewer inlets draining to the proposed pond. The final stormwater quality measure will be the installation of trees, shrubs and grasses with the landscaping phase of the project. These landscaping items will help to reduce sediment runoff from the site. Please see "Approved" landscape plan for locations and types of trees and shrubs used. C3 DESCRIPTION OF PROPOSED POST-CONSTRUCTION STORMWATER QUALITY MEASURES All paved areas are collected by a storm sewer system to prevent the possibility of erosion in proposed swales. Additionally, paved areas are graded between 0.50-percent to 2.5-percent slope to reduce velocity. The roof drains from future buildings will be directed by underground piping to storm sewers. This will eliminate concentrated flow from downspouts that could erode lawn areas adjacent to the building. Topsoil will be placed in lawn areas and then seeded with grass and graded at the flattest slope possible to minimize overland flow velocity. In no cases will lawn areas exceed 3:1 slope. A extensive landscape plan has been put together in the greenspace on-site. Additionally, the grassy areas will provide additional areas for stormwater to infiltrate. The use of proposed trees will also provide additional cover on site. This project does contain plans for installation of post-construction stormwater quality Best Management Practices (BMP) as indicated above. A description of some additional storm water quality BMP's that may be incorporated into the project in the future are as follows. The feasibility of applying any of these practices to a particular project is a complicated decision-making process that involves input from the owner and regulatory agencies. In addition, each local authority will dictate design criteria and practices that may vary widely from one jurisdiction to the next. Therefore, the use of any of BMP's in the list is speculative. The fact that a BMP is listed should not be understood to mean that the BMP could have been installed at this site; rather, its inclusion in the list means only that it might have been installed at this project or that it should be considered for a similar project in the future. Furthermore, the lack of any of the following stormwater quality measures in this plan is not an admission of errors, omissions, or negligence on the part of the engineer or owner. BMP's are methods to reduce stormwater pollutants Stormwater Ponds. The measures incorporated into this design are catch basins as required by the City of Carmel. Good Housekeeping measures Good Housekeeping measures such as regular street sweeping, installation of trash receptacles, and reduction in fertilizer overspray can be incorporated by the owner and/or occupant. C4 LOCATION, DIMENSIONS, SPECIFICATIONS, AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE The following items are stormwater quality measures that will remain in place after constrtuction is completed and are considered to serve as post-construction stormwater quality BMP's. Landscaping A landscape plan that includes extensive plantings and greenspace will be forthcoming in the next phase of the project. C5 DESCRIPTION OF MAINTENANCE GUIDELINES FOR POST-CONSTRUCTION STORMWATER QUALITY MEASURES Maintenance requirements for the post-construction stormwater quality measures are described below: Lanc_p_gi ir EROSION CONTROL NOTES 3:1 5: \Legal \PlatinumSWPPP.doc LINE WITH GEOTEXTILE WOVEN FABRIC #53 STONE ■1111■ 4110 c7apc= `:7'41.7116:.....1111■dno•r .0.. 11. FUELING VEHICLE MAINTENANCE AREA SECTION "Z"- NOT-TO-SCALE 6' MIN. 6" EXCAVATED KEYWAY 6 EXCAVATED KEYWAY 6" MULCH BOTTOM OVER GEOTEXTILE pi cocREN WASHOUT DETAL WOVEN FABRIC NOT-TO-SCALE Landscaping shall be fertilized at the time of installation with pellets buried near the root ball. Subsequent tree fertilizations shall not be surface applied. Tree spikes or similar measure shall be used. For the first two years after installation, the landscaping shall be watered the equivalent of 1" of rainfall once per week if adequate rainfall was not received. After two years, water as necessary in dry season. Lawn shall be mowed at a height of not less than 3" to increase root mass. Lawn shall not be fertilized more that twice per year and shall be immediately watered into the soil after application. uJ 0 DRAWN BY: BAH 0 SHEET NO. v- ro 0 Li a) 0 S Sc A JOB NO 52605CTX 0 ON OC) U_ F- CHECKED BY: EEF LLJ C3O2