HomeMy WebLinkAbout09050022 C5.3 Stormwater Pollution Prevention Plan0
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SITE NAME
The area scheduled for construction is known as "Indiana Spine Group" (hereinafter referred to as the
"Project
PROJECT LOCATION
The property is located along a private road, from 131st St. South of U.S. 31 in, Carmel, Indiana, at a latitude
of 39 58'48.79" and a longitude of 86 09'17.18
1. HYDROLOGIC UNIT CODE (HUC)
05120201090060 (Williams Creek)
2. IDENTIFICATION OF ALL RECEIVING WATERS
The ultimate receiving water is JR Collins Regulated Drain.
3. PRE CONSTRUCTION AND POST CONSTRUCTION ESTIMATE OF PEAK DISCHARGE
Pre construction 10 -year discharge: *7 cfs
Post construction 10 -year discharge: *0.34 cfs
4. SPECIFIC POINT WHERE STORMWATER DISCHARGE WILL LEAVE THE SITE
Stormwater drainage from the site will be conveyed by a proposed storm sewer to a proposed detention pond located
along the North side of the site. The ultimate receiving waters for the detention pond is JR Collins Regulated Drain.
5. IDENTIFICATION OF ALL POTENTIAL DISCHARGES TO GROUND WATER
The detention ponds (designed by others) are designed to infiltrate some storm water before discharge.
6. SOILS MAP INCLUDING SOIL DESCRIPTION AND LIMITATIONS
Soil information from the Hamilton County Soil Survey is on Sheet C5.1.This site has Crosby silt loam.
The suitability of the soils for pavement (local roads and streets) is listed in Table 8 as very limited. The on -site soil will
be treated as recommended by the geotechnical engineer if the conditions are unsuitable for the pavement
system. Remedial treatments may include, but are not limited to, removal of unsuitable soil and backfilling with
engineered material, installation of a geofabric within or under the pavement system, or treatment of the subgrade
with lime.
The limitations of the soils for small commercial buildings as listed in Table 8 as very limited. The foundations of the
building will be designed by the structural engineer to accommodate the actual bearing capacity of the soil. The on-
site soil will be treated as recommended by the geotechnical engineer if the conditions are unsuitable for the
foundation system. Remedial treatment may include, but is not limited to, removal of the suitable soil and
backfilling with engineered material
Other suitability or limitations of the soil for the other classifications of use listed in the table are not applicable
to this project.
7. 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:
1. Structural fill
2. Road Base
3. Plastic drainage pipe
4. Water main pipe and appurtenances
5. Concrete drainage pipe
6. Concrete culverts
7. Precast concrete manholes
8. Rock rip -rap
8. TEMPORARY AND PERMANENT STORM WATER QUALITY MEASURES
STATE AND FEDERAL WATER QUALITY PERMITS
None are required for this project.
LOCATION, DIMENSIONS, SPECIFICATIONS, AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE
A Catch -AII will be used a a sediment barrier during construction.
Temporary sediment basins will be constructed during the inital earthwork on site.
The detention pond will provide a sediment removal function in addition to the primary function of
controlling peak discharges from the northern portion of the site. A Vortsentry will be installed
upstream of the detention pond to protect the stormwater. The southern portion of the site that
discharges into the roadway stormwater is treated by both Vortsentry and infiltration basin per the
development master plan. Temporary or permanent surface stabilization required for thin or bare area
that is inactive for 15 days or more.
STABLE CONSTRUCTION ENTRANCE LOCATIONS AND SPECIFICATIONS
Refer to Sheet C5.1 for location and C5.3 for details.
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 5:1 (horizontal to vertical). Silt Fence will be installed to prevent
sedimentation from leaving the site.
Because lengths and heights of the slopes are small, more aggressive erosion control measures
were not considered.
Refer to Sheet C5.3 for details.
SEDIMENT CONTROL MEASURES FOR CONCENTRATED FLOW AREAS
There are no proposed concentrated flow areas on -site.
Straw bales and silt fences will not be allowed as concentrated flow protection measures.
STORM SEWER INLET PROTECTION MEASURE LOCATIONS AND SPECIFICATIONS
The contractor shall install sand bags around each inlet in paved areas and silt fence around inlets in grass
areas during construction. A Catch -All will be used as a sediment barrier during construction. Refer to Sheet
C5.2 for locations and refer to Sheet C5.4 for details.
Straw bales will not be allowed as inlet protection measures.
RUNOFF CONTROL MEASURES
Not applicable.
STORMWATER OUTLET PROTECTION SPECIFICATIONS
Rip rap will be utilized for the outfall protection, refer to sheet C5.1.
GRADE STABILIZATION STRUCTURE LOCATIONS AND SPECIFICATIONS
Rip rap aprons at inlets will be utilized to prevent grade dlestabilization. Refer to sheets C5.1.
SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION
The stormwater detention pond will remain in place as permanent features after construction is completed.
Although the purpose of the pond is to restrict stormwater discharges, it wil also provide sediment removal
removal function.
Oils, grease, brake fluid and gasoline spilled on -site shall be immediately absorbed with products such as
perlite vermiculite, sand or polypropylene and disposed of in accordance with local regulations.
MONITORING AND MAINTENANCE GUIDELINES FOR EACH PROPOSED STORMWATER QUALITY MEASURE
Inspection Schedule /Reporting
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. Where sites have been final or
temporarily stabilized or on sites where runoff is unlikely due to winter conditions (e.g., site is covered with
snow, ice, or frozen ground exists), such inspections shall be conducted at least once every month.
Inspections shall be conducted and a written report prepared, by a designated and qualified person familiar with
the USEPA NPDES Storm Water General Permit, this SWPPP, 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 City of Carmel.
The existing adjoining parking lot and all perimeter city streets shall be monitored daily to prevent sediment from
leaving the construction site.
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
as described in this SWPPP.
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 or have a stand of vegetation with at least
70% of the background vegetation density. The density of 7 0% 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. Inlet Protection: Sediment should be removed when it reaches approximately one -half the height of the
fence. If a sump is used, sediment should be removed when the volume of the basin is reduced by 50
3. Mulching: Inspect 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 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.
5. Silt Fence: Removal of built -up sediment will occur when the sediment reaches one -third the height of the
fence.
6. Stabilized Construction Entrance: Periodic regarding and top dressing with additional stones.
7. Vegetation: Protect newly seeded areas from excessive runoff and traffic until vegetation is established.
8. Establish a watering and fertilizing schedule.
g. 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.
10. Catch -AII The filter of the device should be cleared or changed when sediment or debris clog 75% of
the filter area.
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.
Modifications /Revisions to SWPPP
Based on inspection results, any necessary modification to this SWPPP shall be implemented within seven
calendar days of the inspection. A modification is necessary if a control measure or operational procedure does
not provide adequate pollutant control. All revisions shall be recorded on a Record of Revisions within seven
calendar days of the inspection.
It is the responsibility of the operator to maintain effective pollutant discharge controls. Physical site conditions
or contractor /subcontractor practices could make it necessary to install more controls than were originally
planned. For example, localized concentrations of surface runoff or unusually steep areas could require additional
silt barrier or other structural controls. Assessing the need for and installing additional controls will be a
continuing contractor /subcontractor responsibility until final stabilization is achieved. Contractors and
subcontractors implementing this SWPPP must remain alert to the need to periodically refine and update this
SWPPP in order to accomplish the intended goals.
Notice of Termination
Compliance of the site with the General Construction Permit remains the responsibility of all operators that have
submitted an NOl until such time as they 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 have not been finally
stabilized.
3. In residential construction operations, temporary stabilization has been completed and the residence has
been transferred to the homeowner.
DESCRIPTION OF PROPOSED POST CONSTRUCTION STORMWATER QUALITY MEASURES
Grading and Drainage
Top soil will be placed in Iawnareas and seeded with grass and graded; not to exceed 3:1 slopes. proposed landscape
trees and shrubs will also be added. These Bio areas will act as a natural filter strip to help improve storm water
quality. The vegetated areas will slow the velocities of storm water runoff, reduce sediment runoff, and reduce
problems associated with mud or dust from bare soils.
Detention Pond
There is a proposed dry detention pond North of the site. All of the site drainage will be directed through the detention
system prior to discharge. Plantings and a small outfall orifice will provide water quality treatment.
The dry detention pond with plantings encourages sediment removal by providing more time for settling and
infiltration to occur.
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.
LOCATION, DIMENSIONS, SPECIFICATIONS, AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE
See sheets C2.1, C4.1
DESCRIPTION OF MAINTENANCE GUIDELINES FOR POST CONSTRUCTION STORMWATER QUALITY MEASURES
Maintenance requirements for the detention pond and swales which will remain in place after
construction is completed, are described below.
The patented Vortsentry provides a highly effective means for removal of sediment, floating debris and free -oil.
Swirl technology, or vortex separation, is a proven form of treatment utilized in the stormwater industry to
accelerate gravitational separation. Each Vortsentry is constructed of High- Density Polyethylene (HDPE), and is
therefore modular, lightweight and durable, eliminating the need for heavy lifting equipment during installation.
The Vortsentry provides full treatment for the most contaminated "first flush," while the cleaner peak storm flow
is diverted and channeled through the main conveyance pipe.
Post construction maintenance requirements for inlets vegetated areas are to include periodic inspection as needed
or at least every six months. Sediment shall be disposed of off site in accordance with all applicable laws. Areas that
show signs of erosion shall be stabilized with erosion control blanket and /or seed as necessary.
9. SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION RELATIVE TO LAND DISTURBING ACTIVITIES
1. A pre construction meeting should be scheduled with the City of Carmel Engineering Department at least 48
hours prior to construction commencement.
2. Install construction entrance.
3. Utilize the gravel construction entrance for installation of the perimeter silt fence. Add stone if needed. Post
the NOI at the entrance. Add protection measures to existing inlets.
4. Install staging area, fueling station, material storage area and concrete truck washout.
5. Construct sediment basins as shown on sheet C5.1.
6. Strip the top soil and grade.
7. Complete the cut and fills on the site. Final grade and seed the pond slopes. Install check dams or stabilize
the slopes with erosion control blankets.
8. Areas left dormant for more than 15 days, must be temporarily seeded.
9. Install storm sewer and other utilities. Provide inlet protection immediately upon completion of the inlets.
Final grade and stabilize slopes when inlets are functioning.
10. Seed the perimeter of the site.
11. Start Building Construction.
12. Complete utility installation, curbs, o paving and b construction.
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13. install landscaping plant material and stabilize all disturbed areas.
14. Remove all erosion and sediment control practices when areas have a uniform grass cover.
15. After completion of construction, inspect and clean the dry detention area every 6 months.
10. LOCATIONS OF PROPOSED SOIL STOCKPILES AND /OR BORROW /DISPOSAL
Excess soil shall be immediately stockpiled and seeded and /or removed from the construction site in
accordance with all applicable laws.
11. TEMPORARY SURFACE STABILIZATION METHODS APPROPRIATE FOR EACH SEASON
Mulch should be applied with all seed.
Refer to Sheet C5.3, within the Seasonal Soil Protection Chart.
PERMANENT SURFACE STABILIZATION SPECIFICATIONS
A. Loosen lawn area to a minimum depth of 6 inches. Mix soil amendments and fertilizers with topsoil at rates
specified. Organic soil amendments such as peat, compost or manure shall be applied at 2" depth evenly over
soil and incorporated into the top 6" of topsoil. Provide fertilizer with percentage of nitrogen required to
provide not less than 1 pound of actual nitrogen per 1,000 sq. ft. of lawn area and not less than 4 percent
phosphoric acid and 2 percent potassium. At least 50 percent of nitrogen to be organic form. Delay mixing
of fertilizer if planting will not follow placing of planting soil within a few days.
B. Fertilizer for lawns: provide a fast release fertilizer with a composition of 1 lb per
1,000 sq. ft. of actual nitrogen, 4 percent phosphorous, and 2 percent potassium by
weight.
C. Slow release fertilizer for trees and shrubs: granular fertilizer consisting of 50
percent water insoluble nitrogen, phosphorous and potassium made up of a composition
by weight of 5 percent
D. Grade lawn and grass areas to a smooth, even surface with loose, uniformly fine texture. Limit fine grading
to areas that can be planted within immediate future. Remove trash, debris, stones larger than 1 inch
diameter, and other objects that may interfere with planting or maintenance operations.
E. Sow seed using a spreader or seeding machine. Do not seed when wind velocity exceeds 5 miles per hour.
Distribute seed evenly over entire area by sowing equal quantity in 2 directions at right angles to each other.
F. Rake seed lightly into top 1/8 inch of soil, roll lightly, and water with a fine spray.
G. Install erosion control blankets as indicated on the plan.
H. Protect seeded areas against erosion by spreading clean, seed -free straw mulch after completion of seeding
operations. Spread uniformly to form a continuous blanket not less than 1 -1/2 inches loose measurements
over seeded areas.
I. Water newly planted lawn areas and keep moist until new grass is established. Immediately repair any lawn
areas disturbed by construction activities including tree and shrub installation.
J. Refer to Sheet C5.1, within the Seasonal Soil Protection Chart for timing of temporary and permanent
seeding and grass seed specifications.
12. LOCATION OF ALL LOTS AND PROPOSED SITE IMPROVEMENTS
The site will not be subdivided; therefore, there are no individual lots on the property. The overall site plan, Sheet
C2.1, shows the proposed site improvements.
EROSION AND SEDIMENT CONTROL SPECIFICATIONS FOR INDIVIDUAL BUILDING LOTS
Since the entire site is under a single ownership, there are not any individual building lots.
DESCRIPTION OF POLLUTANTS AND THEIR SOURCES ASSOCIATED WITH THE PROPOSED LAND USE
The proposed land use is a medical facility. The pollutants and sources of each pollutant normally expected
from this type of land use are listed below:
Pollutant Source: Passenger vehicles, delivery vehicles.
Type of Pollutant: Oil, gasoline, diesel fuel, any hydrocarbon associated with vehicular fuels and lubricants,
grease, antifreeze, windshield cleaner solution, brake fluid, brake dust, rubber, glass, metal and plastic
fragments, grit, road de -icing materials
Pollutant Source: Office building
Type of Pollutant: Cleaning solutions or solvents, leaks from HVAC equipment, grit from roof drainage,
aggregate or rubber fragments from roofing system.
Pollutant Source: Trash dumpster
Type of Pollutant: Cleaning solutions or solvents, litter (paper, plastic, general refuse associated with
distribution operations), uneaten food products, bacteria.
Pollutant Source: Parking lot
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, elevated water temperatures from contact with impervious surfaces
Pollutant Source: Lawn and landscape areas
Type of Pollutant: Fertilizers, soil, organic material (leaves, mulch, grass clippings)
The anticipated pollution sources are the vehicles that will use facility, including both delivery trucks and
passenger vehicle traffic. Possible pollutants include oil, gasoline, anti freeze and other pollutants
associated with vehicular traffic.
13. MATERIAL HANDLING AND SPILL PREVENTION PLAN
Solid 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.
A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers
on proper solid waste procedures.
Hazardous Waste
Whenever ossible, 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 onto existing
streets. If sediment escapes the construction site, off -site accumulations of sediment must be removed at a
frequency sufficient to minimize offsite impacts.
Sanitary /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 roviding 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 onto soil where they
may be washed away during a rain event.
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, aints, solvents, fertilizers, and other toxic or hazardous materials should be stored in their original
containers (iif original container is not resealable, 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 and 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.
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 Soil and Water Conservation District. The
SWPPP must be revised within 14 calendar days after the release to reflect the release, ys a e e ease o e ease, stating the information
above along with modifications to minimize the possibility of future occurrences. Each contractor and
subcontractor is responsible for complying with these reporting requirements.
Concrete Washout
All concrete trucks waste material shall be completely contained and disposed in accordance with all local, state,
and federal regulations. A pit or container is required when cleaning concrete chutes.
Spill Response Plan
The project supervisor should be notified of all spills. If a spill has the potential for groundwater or surface water
pollution, the Carmel Fire Department (317- 571 -2600) and the owner (317- 844 -6000) should be contacted. If a
spill does ollute the surface or ground water, the IDEM Spill Response Center (888 -233 -7745) and the County
Surveyor (317-776-8495) need to be contacted. (The Surveyor is a contact only if the drainage system
discharged into a Regulated Drain.)
All possible measures such as diking or calling a spill clean -up specialist shall be used to minimize any impacts.
Clean up materials shall be stocked on the construction site at all times.
14. OWNER'S INFORMATION
Name: BROWNING INVESTMENTS INC.
Address: 6100 W. 96TH STREET
Representative:
Title:
Telephone: (317) 635 -5030
Facsimile: (317) 634 -5409
OPERATOR'S INFORMATION
Name: Not available
Address:
Representative:
Title:
Telephone:
Facsimile:
Post Construction SINPPP
1. Description of Potential Pollutant sources associated with the proposed land use:
Pollutant Source: Passenger vehicles, delivery vehicles.
Type of Pollutant: Oil, gasoline, diesel fuel, any hydrocarbon associated with vehicular fuels and lubricants
grease, antifreeze, windshield cleaner solution, brake fluid, brake dust, rubber, glass, metal and plastic
fragments, grit, road de -icing materials
Pollutant Source: Trash dumpster
Type of Pollutant: Cleaning solutions or solvents, litter (paper, plastic, generd refuse associated with
distribution operations), uneaten food products, bacteria.
Pollutant Source: Lawn and landscape areas
Type of Pollutant: Fertilizers, soil, organic material (leaves, mulch, grass clippings)
2. Post Construction Stormwater quality measures:
a. Location Refer to sheet C4.1
b. Dimensions Refer to sheet C4.1
c. Sizing calculations Refer to drainage report for this project
d. Detailed specifications Refer to drainage report for this project
e. Construction Details Refer to sheets C4.1 and C8.1.
3. Sequence describing stormwater quality measure implementation:
The dry detention basin will be installed at the time of the grading of the site.
After final grading of this area is achieved, the vegetation show on the planting plan
will be installed.
4. Storrnwater quality measures to be implemented to prevent or minimize adverse impacts to stream and
riparian habitats.
The dry detention /infilltration basin will be used to slow the flow of runoff from the site.
In -line Aquaswirl will be installed at pond outlet down stream.
5. An Operation and Maintenance Manual for all post construction stormwater quality measures:
Please see the supplemental 0&fvl for all required information.
111111 STRUCTUREPOINT
7260 SHADELAND STATION
INDIANAPOLIS, IN 46256 -3957
TEL 317.547.5580 FAX 317.543.0270
www.structurepoint.com
BROWNING INVESTMENTS INC.
6100 W. 96TH STREET
SUITE 250
INDIANAPOLIS, iN 46278
INDIANA SPINE GROUP
MERIDIAN MAIN
CARMEL, INDIANA
CONSULTANTS
DATE'
DRAWN BY'
CHECKED BY"
ISSUED FOR.
1
ADLS STAFF REVIEW
PROJECT 1' 02009.00531
0522.09
EEM
TMJ
DATE
07/03/09
STORM WATER
POLLUTION
PREVENTION PLAN
C5.3