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STORMWATER POLLUTION PREVENTION PLAN INDEX
Al Plan Index provided below
A2 11"x17" Plot denoting lot numbers, boundaries and streets is provided separately.
A3 Project Type: 13 single family lots.
A4 Vicinity Map: Denoted on Sheet C100
A5 Legal Description of Project Site: See attached Secondary Plat and NOI Letter.
Latitude 39*58'17*N, Longitude 8612'06"W.
A6 Location of all lots and proposed site improvements: See Development Plan Sheet C101.
A7 14 Digit Hydrologic Unit Code: 05120201090060 & 05120201120080
A8 State or Federal water quality permits: None
A9 Specific points where stormwater discharge will leave the site: A portion the stormwater flows to
existing storm sewer built with Towne Road. It is then routed through a detention pond located in
Section 6002 of the Village of WestClay that dishcharges into the existing beehive located south of
126th Street. It is then routed through a detention pond in Laurel Lake Subdivision and then
discharges into the JW Brendle Drain. The JW Brendle Drain flows south and then southwesterly.
The remainder of the stormwater flows to existing inlets in Section 7501 of the Village of WestClay.
See Site Development Plan Sheet C101 for more detail.
A10 Location of all wetlands, lakes & water courses on and adjacent to site: There is a pond located
west of Towne Road within Section 6002 of the Village of WestClay. See Site Development Plan
Sheet C101 for more detail.
All Receiving Waters: JW Brendle Drain and Elliot Creek
-
Al2 Identification of potential discharges to groundwater: none.
A13 100 Year Floodplains, Floodways and Flood Fringes: none.
A14 Pre-Construction and Post Construction Peak Discharge:
10 year Pre-Construction Peak Discharge = 10 cfs
10 year Post Construction Peak Discharge = 10.9 cfs
A15 Adjacent Land Use:
North: Single Famile Residential - Village of WestClay Future Section 8501
South: Estate Lots / Agricultural
East: Single Family Residential - Village of WestClay Sections 7501-A, 7501-B & 7501-C
West: Towne Road / Single Family Residential - Village of WestClay Section 6002
A16 Locations and approximate boundaries of all disturbed areas: See Sheets C102-C103 for
locations.
A17 Identification of existing vegetative cover: See Stormwater Pollution Prevention Plan -
Sheets C102-C103.
A18 Soils Map including descriptions and limitations: See sheet C803 for soils map, description
and limitations.
A19 Locations, size and dimensions of proposed stormwater systems: See Site Development Plan
Sheet C101for proposed storm sewer system. Note that no additonal storm sewer structures
are proposed, however; additional drainage patterns and subsurface drain are proposed.
A20 Locations, size and dimensions of any proposed off-site construction activities associated with this
project: none.
A21 Locations of Soil Stockpiles: Stockpile areas shall be located as far away from ponds, existing
-
storm sewer inlets and existing swales as possible. Stockpiles shall not be located closer than 15
feet from property line. Stockpiles shall be immediately seeded and secured with silt fence.
A22 Existing site topography. See Site Development Plan Sheet C101 for existing site topography.
A23 Proposed final topography See Site Development Plan Sheet C101 for proposed site grading and
drainage patterns.
Ll Description of potential pollutants sources associated with the construction activities:Silt and
sediment from exposed soils, leaves, mulch, vehicular sources such as leaking fuel or oil, brake
fluid, brake dust, trash, debris, biological agents found in trash, fertilizers, herbicides, pesticides,
acid rain, lime dust and concrete washout.
82 Sequencing of stormwater quality implementation relative to land disturbance activities: This plan
has been created in an effort to eliminate sediment from leaving the Village of WestClay Section
8002 project and adjacent future sections of WestClay during construction protecting the adjoining
properties, JW Brendle Drain and Elliot Creek. The majority of the existing watershed sheet drains
to concentrated flow. The concentrated flow conveys runoff to existing storm networks that
eventually drain into the JW Brendle Drain and Elliot Creek.
PRECONSTRUCTION ACTIVITIES:
1. Call the Indiana Underground Plant Protection systems, Inc. (*Holey Moley") at
1-800-382-5544 to check the location of any existing utilities. They should be notified
two working days before construction takes place.
2. Contact the City Engineer of Carmel Engineering Department 48 hours prior to the start
of construction to schedule a pre-construction meeting.
3. A silt fence shall be installed at the edges of the project site where there is potential
for any stormwater runoff Potential areas are identified based on existing topography
along the perimeter of the overall site. See Sheets C102-C103 for locations.
4. Evaluate existing vegetation suitable for use as filter strips along the perimeter of the
overall site.
5. Evaluate, mark and protect important trees and associated root zones.
6. Inlet protection shall be placed at the existing beehive, and paved area inlets, and curb inlets
as shown on Sheet C102.
7. A construction entrance shall be placed per the plan location.
8. Establish construction staging area for equipment and vehicles as for from detention ponds
and swoles as possible.
9. Establish onsite location for owner/operator/contractor placement of approved plans and
Rule 5 NOI and Rule 5 inspection documentation.
CONSTRUCTION ACTIVITIES:
1. Once erosion and sediment control measures are in place, begin land clearing followed
immediately by rough grading. Do not leave large areas unprotected for more than 15
days. Rule 5 requires that all disturbed areas that potentially will be idle for 15 days or
more will be stabilized (seeded, mulched, etc..) immediately.
2. After completion of mass grading, final grade and seed landscape berms, common areas
and swales immediately after grading is completed.
3. Upon completion of mass grading, install sanitary laterals and storm sewers. Install curb
inlet protection as shown on Sheet C103 as soon as curb inlets are installed.
4. Upon completion of sewer installation proceed with street construction.
5. Liming of streets, if required, should be done prior to the installation of storm sewers to
prevent transmission of lime dust to ponds or receiving waters.
6. Once pavement and curbs are in place, verify that all curb inlet protective devices are
still intact.
7. Builder/Contractor shall sweep adjacent streets at least twice weekly. Curbs shall be cleaned
daily. In addition, streets and curb inlet protection should be cleared of all debris at the end
of each work day.
8. Final grade all areas. Reseed all disturbed areas.
9. Remove all temporary erosion and sediment control measures.
10. Install Snout Catch Basin manhole inserts.
11. Notify the City of Carmel with a Notice of Termination letter upon completion of the project and
stabilization of the site.
83 Stable construction entrance location(s) and specifications. See Stormwater Pollution Prevention
Plan Sheets C102-C103 for location and Sheet C803 for construction entrance details and
specifications.
L4 Sediment control measures for sheet flow areas: See Stormwater Pollution Prevention Plan Sheets
C102-C103 for locations of sediment control measures and Sheet C803 for construction details
and specifications.
K Sediment control measures for concentrated flow areas: See Stormwater Pollution Prevention Plan
Sheets C102-C103 for locations of sediment control measures and Sheet C803 for construction
details and specifications.
86 Strom sewer inlet protection measures, locations and specifications: See Stormwater Pollution
Prevention Plan Sheets C102-C103 for locations of inlet protection measures and Sheet C803 for
construction details and specifications.
01 Runoff control measures: See Stormwater Pollution Prevention Plan Sheets C102-C103 for
locations of runoff control measures and Sheet C803 for construction details and specifications.
K Stormwater outlet protection specifications: See Stormwater Pollution Prevention Plan Sheets
C102-C103 for locations of stormwater outlet control measures and Sheet C803 for construction
details and specifications.
01 Grade stabilization structure locations and specifications: See Stormwoter Pollution Prevention Pion
Sheets C102-C103 for locations of grade stabilization control measures and Sheet C803 for
construction details and specifications.
B10 Location, dimensions, specifications and construction details of each stormwater quality
measure: See Stormwater Pollution Prevention Pion Sheets C102-C103 for locations of various
stormwater quality measures and Sheet C803 for construction details and specifications.
Bll Temporary surface stabilization methods appropriate for each season: See Stormwater
Pollution Prevention Plan Sheets C102-C103 for locations of temporary surface stabilization
measures and Sheet C803 for construction details and specifications.
EU Permanent surface stabilization specifications: See Stormwater Pollution Prevention Plan
Sheets C102-C103 for locations of permanent surface stabilization measures and Sheet C803 for
construction details and specifications.
B13 Material handling and spill prevention plan:
Purpose:
The intention of this Spill Prevention, Control and Countermeasures (SPCC) is to establish the
procedures and equipment required to prevent the discharge of oil and hazardous substances in
quantities that violate applicable water quality standards, cause a sheen upon or discoloration of
the surface of navigable waters or adjoining shorelines, or cause sludge or emulsion to be
deposited beneath the surface of the water or adjoining shorelines. The Plan also establishes the
activities required to mitigate such discharges (i.e., countermeasures) should they occur.
Definitions:
Pollutant: means pollutant of any kind or in any form, including but not limited
to sediment, paint, cleaning agents, concrete washout, pesticides, nutrients,
trash, hydraulic fluids, fuel, oil, petroleum, fuel oil, sludge, oil refuse, and oil mixed with wastes
other than dredged soil.
Discharge:
Includes but is not limited to, any spilling, leaking, pumping, pouring, emitting,
emptying, or dumping.
Navigable Waters:
Means all waters of the United States that are connected with a navigable stream,
lake, or sea. [Note: This definition is usually interpreted to mean any wastewater (even normally
dry wash or storm sewer) that eventually drains into a navigable streaml
Plan Review and Amendements:
This Plan shall be reviewed and/or amended, if necessary, whenever there is a
change in the design of the site, construction, operation, or maintenance which
materially affects the site's potential for the discharge of regulated material.
Prediction of Potential Spills:
1. Nearest Navigable Water: JW Brendle Drain & Elliot Creek
2. Drainage System: All storm drainage leaves the development site by through closed storm
systems which eventually discharge into the JW Brendle Drain which flows southwesterly, or
Elliot Creek which flows southeasterly.
3. Possible Spill Sources (During and post construction): Vehicular sources such as
leaking fuel or oil, brake fluid, grease, antifreeze; construction trash and debris,
biological agents found in trash and debris, fertilizers, household items including
but not limited to cleaning agents, chemicals, paint, herbicides and pesticides.
4. Groundwater Contamination:
The facility maintains NO above ground or under ground storage tanks at this site.
Therefore, it is felt that there is little or no possibility of post construction groundwater
contamination. The facility does have city sanitary sewer and city water.
Alert Procedures for Spills:
1. Any personnel observing a spill will immediately instigate the following
procedure:
a.) Dialing V from any telephone.
b.) Notify the appropriate emergency personnel.
2. The Emergency Coordinator will then take the following actions:
a.) Barricade the area allowing no vehicles to enter or leave the
spill zone.
b.) Notify the Indiana Department of Environmental Management,
Office of Emergency Response by calling the appropriate
telephone number:
Office 317-233-7745
Toll Free 800-233-7745
Also the National Response Center at 800-424-8802
and provide the following information:
- Time of observation of the spill
- Location of the spill
- Identity of material spilled
- Probable source of the spill
- Probable time of the spill
- Volume of the spill and duration
- Present and anticipated movement of the spill
- Weather conditions
- Personnel at the scene
- Action initiated by personnel
c.) Notify the City of Carmel Fire Department Phone: 9-1-1
-1-1
d.) Notify the City of Carmel Police Department Phone: 9
e.) Notify waste recovery contractor, maintenance personnel or other
contractual personnel as necessary for cleanup.
f.) Coordinate and monitor cleanup until the situation has been
stabilized and all spills have been eliminated.
g.) Cooperate with the IDEM-OER on procedures and reports involved
with the event.
Cleanup Parameters:
1. The Developer / Homeowners Association shall be continually kept informed, maintain lists
of qualified contractors and available Vac-trucks, tank pumpers and other equipment
readily accessible for cleon-up operations. In addition, a continually updated list of
available absorbent materials and clean-up supplies should be kept on site.
2. All maintenance personnel will be made aware of techniques for prevention of spills. They
will be informed of the requirements and procedures outlined in this plan. They will be
kept abreast of current developments or new information on the prevention of spills
and / or necessary alterations to this plan.
3. When spills occur which could endanger human life and this becomes primary concern, the
discharge of the life saving protection function will be carried out by the local police
and fire departments.
4. Absorbent materials, which are used in cleaning up spilled materials, will be disposed of in
a manner subject to the approval of the Indiana Department of Environmental
Management.
5. flushing of spilled material with water will not be permitted unless so authorized by the
Indiana Department of Environmental Management.
B14 Monitoring and maintenance guidelines for pollution prevention measures:
Concrete Washout Facility Maintenance ReQuirements
1. The Concrete Washout Area shall be repaired and enlarged or cleaned out as necessary
to maintain capacity for wasted concrete..
2. The Concrete Washout Area shall be cleaned out when full and after each storm event.
3. At the eand of construction all concrete shall be removed from the site and disposed
of at an approved waste site.
Silt Fence Maintenance ReQuirements
1. Inspect the silt fence periodically and after each storm event.
2. If fence fabric tears, starts to decompose or in any way becomes ineffective, replace
the affected portion immediately.
3. Remove deposited sediment when it reaches half the height of the fence at it's lowest
point or is causing the fabric to bulge.
4. Take care to avoid undermining the fence during cleanout.
5. After the contributing drainage area has been stabilized, remove the fence and sediment
deposits, bring the disturbed area to grade and stabilize it.
Dandy Curb Sack Inlet Protection Maintenance Reguirements
1. Remove all sediment and debris from the surface and vicinity of the unit after each storm
event.
2. After storm event and at regular intervals, look into the Dandy Bag. If the containment
area is more than Y3 full of sediment, the unit must be emptied.
3. To empty unit, simply lift the unit out of the inlet using the lifting straps and remove the
grate.
4. If using optional oil absorbants, replace absorbant pillow when near saturation.
Erosion Control Blanket (Surface Applied) Maintenance ReQuirements.
1. During vegetative establishment, inspect after each storm event for any erosion below
the blanket.
2. If any orea(s) shows erosion, pull back that portion of the blanket covering it, re-
seed the area and relay and staple the blanket.
3. After vegetative establishment check the treated area periodically.
Temporary Gravel Construction Entrance Maintenance Requirements
1. Inspect entrance pad and sediment disposal area weekly and after storm events or
heavy use.
2. Reshape as needed for drainage and runoff control.
3. Topdress with clean stone as needed.
4. Immediately remove mud and sediment tracked or washed onto streets by brushing or
sweeping. Rushing should only be used if the water is conveyed into a sediment
trap or basin.
5. Repair any broken road pavement immediately..
B15 Erosion & sediment control specifications for individual building lots: See Sheet C803 for
Construction details and specifications for erosion & sediment control on individual building
lots.
Cl Description of pollutants and their sources associated with the proposed land use: Silt and
sediment from exposed soils, leaves, mulch, vehicular sources such as leaking fuel or oil, brake
fluid, brake dust, grease, antifreeze, metals, rubber fragments, road grit, salts and sands,
construction trash and debris, fertilizers, household items including but not limited to cleaning
agents, chemicals, paint, miscellaneous home improvement materials, toys, clothing and animal
waste, elevated storm runoff temperatures, acid rain pesticides and pathogens.
C2 Sequence describing stormwater quality measure implementation:
1. Post construction water quality BMP's are to be installed during normal construction
activies of this project defined within construction documents.
A. Inspect and maintain all erosion control measures as detailed in the
Stormwater Pollution Prevention Measures Maintenance Requirements beginning
immediately after installation and continuing until vegetation has been sufficiently
established and all construction activity is complete.
B. Remove all individual inlet protection and straw bale dams, silt fences, etc.
only after seeding and sufficient vegetative growth has been established in each
area to a point where sediment/pollutants will not enter the lakes or storm sewer
system.
C. Inspection and maintenance of all common areas and infrastructure
improvements is the responsibility of the owner/developer or his designee until
improvements are accepted for maintenance by homeowners association or local
agencies.
D. Inspection and maintenance of individual lots is the responsibility of the home
builder or his designee until the homeowner buys and thereby accepts
responsibility for the individual lot.
Q Description of proposed post construction stormwater quality measures: Site and facility
design for stormwater quality protection on this site employs a multi-level strategy consisting of:
1. Reducing or eliminating post-proji�ct runoff.
2. Controlling sources of pollutants.
3. Treating contaminated stormwater runoff before discharging it into the storm sewer
system or receiving waters.
Stormwater quality measures for reducing, eliminating or controlling pollutants (source
controls) include:
a. Dention/Retention - Detain stormwater runoff an extended period of time to allow
pollutants that are suspended to settle out. Runoff will pass through 4 large wet ponds
providing for a significant increase in travel time as well as very low velocities through
the overall Village of WestClay development prior to discharging into Elliot Creek as part
of the master drainage plan for the project. Sections 8002-A and 8002-B are part of the
overall Village of WestClay development.
b. Outlet protection & velocity dissipation devices - Prevent surface erosion resulting in
decreased suspended solids and preserving established downstream vegetative cover.
c. SNOUT Catch Basin Inserts - Insert in catch basins within parking lot to filter pollutants and debris.
It is the intent of this plan that the implementation of the above described storm water
quality measures be executed in accordance with the enclosed plans and details in order to
meet the requirements of Rule 5 storm water quality
C4 Location, dimensions, specifications and construction details of stormwater quality measures:
A series of wet ponds in conjunction with SNOUT BMP's will be utilized as post-construction BMP's.
See Stormwater Pollution Prevention Plan Sheets C102-C103 for locations of permanent
stormwater quality measures and Sheets C803-C804 construction details and specifications.
C5 Description of maintenance guidelines for proposed water quality measures: See attached
BMP Operations and Maintenance Manual.
ADDITIONAL STORMWATER POLLUTION PREVENTION
VEHICLE & EQUIPMENT MAINTENANCE
Description and Purpoae
Prevent or reduce the contamination of stormwater resulting from vehicle and equipment
maintenance by running a "dry and clean site". The best option would be to perform
maintenance activities at an offsite facility. If this option is not available then work should be
performed in designated areas only, while providing cover for materials stored outside,
checking for leaks and spills, and containing and cleaning up spills immediately.
Suitable Applications
These procedures are suitable on all construction projects where an onsite yard area is
necessary for storage and maintenance of heavy equipment and vehicles.
Limitations
Onsite vehicle and equipment maintenance should only be used where it is impractical to
send vehicles and equipment offsite for maintenance and repair. Sending vehicles/equipment
offsite should be done in conjunction with a Stabilized Construction Entrance/Exit. Outdoor
vehicle or equipment maintenance is a potentially significant source of stormwater pollution.
Activities that can contaminate stormwater include engine repair and service, changing or
replacement of fluids, and outdoor equipment storage and parking (engine fluid leaks).
Implementation
If maintenance must occur onsite, use designated areas, located away from drainage
courses. Dedicated maintenance areas should be protected from stormwater runon and
runoff, and should be located at least 50 ft from downstream drainage facilities and
watercourses.
Drip pans or absorbent pads should be used during vehicle and equipment maintenance
work that involves fluids, unless the maintenance work is performed over an
impermeable surface in a dedicated maintenance area.
Place a stockpile of spill cleanup materials where it will be readily accessible.
AlI fueling trucks and fueling areas are required to have spill kits and/or use other spill
protection devices.
Use adsorbent materials on small spills. Remove the absorbent materials promptly and
dispose of properly.
Inspect onsite vehicles and equipment daily at startup for leaks, and repair immediately.
Keep vehicles and equipment clean; do not allow excessive build-up of oil and grease.
Segregate and recycle wastes, such as greases, used oil or oil filters, antifreeze, cleaning
solutions, automotive batteries, hydraulic and transmission fluids. Provide secondary
containment and covers for these materials if stored onsite.
Train employees and subcontractors in proper maintenance and spill cleanup procedures.
Drip pans or plastic sheeting should be placed under all vehicles and equipment placed on
docks, barges, or other structures over water bodies when the vehicle or equipment is
planned to be idle for more than 1 hour.
Properly dispose of used oils, fluids, lubricants, and spill cleanup materials.
Do not place used oil in a dumpster or pour into a storm drain or watercourse.
Properly dispose of or recycle used batteries.
Do not bury used tires.
Repair leaks of fluids and oil immediately.
Listed below is further information if you must perform vehicle or equipment
maintenance onsite.
Inspection and Maintenance
Inspect and verify that BMPs are in place prior to the commencement of associated activities.
While activities associated with the BMP are under way, inspect weekly to verify continued OMP
implementation.
Keep ample supplies of spill cleanup materials onsite.
Maintain waste fluid containers in leak proof condition.
Vehicles and equipment should be inspected on each day of use. Leaks should be repaired
immediately or the problem vehicle(s) or equipment should be removed from the project site.
Inspect equipment for damaged hoses and leaky gaskets routinely. Repair or replace as
needed.
VEHICLE AND EQUIPMENT FUEUNG
Description and Purpose
Vehicle equipment fueling procedures and practices are designed to prevent fuel spills and
leaks, and reduce or eliminate contamination of stormwater. This can be accomplished by
using offsite facilities, fueling in designated areas only, enclosing or covering stored fuel,
implementing spill controls, and training employees and subcontractors in proper fueling
procedures.
Limitations
Onsite vehicle and equipment fueling should only be used where it is impractical to send
vehicles and equipment offsite for fueling. Sending vehicles and equipment offsite should
be done in conjunction with a Stabilized Construction Entrance/ Exit.
Implementation
Use offsite fueling stations as much as possible. These businesses are better equipped to
handle fuel and spills properly. Performing this work offsite can also be economical by
eliminating the need for a separate fueling area at a site.
Discourage "topping-off" of fuel tanks.
Absorbent spill cleanup materials and spill kits should be available in fueling areas and
on fueling trucks, and should be disposed of properly after use.
Drip pans or absorbent pods should be used during vehicle and equipment fueling, unless
the fueling is performed over an impermeable surface in a dedicated fueling area.
Use absorbent materials on small spills. Do not hose down or bury the spill. Remove the
adsorbent materials promptly and dispose of properly
Avoid mobile fueling of mobile construction equipment around the site; rother, transport
the equipment to designated fueling areas.
Train employees and subcontractors in proper fueling and cleanup procedures.
Dedicated fueling areas should be protected from stormwater runon and runoff, and should be
located at least 50 it away from downstream drainage facilities and watercourses. Fueling
must be performed on level-grade areas.
Protect fueling areas with berms and dikes to prevent runon, runoff, and to contain spills.
Nozzles used in vehicle and equipment fueling should be equipped with an automatic shutoff
to control drips. Fueling operations should not be left unattended.
Federal, state, and local requirements should be observed for any stationary above ground
storage tanks.
Inspection and Maintenance
Vehicles and equipment should be inspected each day of use for leaks. Leaks should be
repaired immediately or problem vehicles or equipment should be removed from the project
site.
Keep ample supplies of spill cleanup materials onsite.
Immediately clean up spills and properly dispose of contaminated soil and cleanup
materials.
LI
Description and Purpose
Solid waste management procedures and practices are designed to prevent or reduce the
discharge of pollutants to stormwater from solid or construction waste by providing
designated waste collection areas and containers, arranging for regular disposal, and training
employees and subcontractors.
Suitable Applications
This BMP is suitable for construction sites where the following wastes are generated or
stored:
Solid waste generated from trees and shrubs removed during land clearing, demolition of
existing structures (rubble), and building construction
Packaging materials including wood, paper, and plastic
Scrap or surplus building materials including scrap metals, rubber, plastic, glass pieces and
masonry products
Domestic wastes including food containers such as beverage cans, coffee cups, paper
bogs, plastic wrappers, and cigarettes
Construction wastes including brick, mortar, timber, steel and metal scraps, pipe and
electrical cuttings, nonhazardous equipment parts, styrofoom and other materials send
transport and package construction materials
Implementation
The following steps will help keep a clean site and reduce stormwater pollution:
Select designated waste collection areas onsite.
Inform trash-hauling contractors that you will accept only watertight dumpsters for onsite
use.
Inspect dumpsters for leaks and repair any dumpster that is not watertight.
Provide an adequate number of containers with lids or covers that can be placed over the
container to keep rain out or to prevent loss of wastes when it is windy.
Plan for additional containers and more frequent pickup during the demolition phase of
construction.
Collect site trash daily, especially during rainy and windy conditions.
Remove this solid waste promptly since erosion and sediment control devices tend to
collect litter.
Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids,
pesticides, additives, curing compounds) are not disposed of in dumpsters designated for
construction debris.
Do not hose out dumpsters on the construction site. Leave dumpster cleaning to the trash
hauling contractor.
Arrange for regular waste collection before containers overflow.
Clean up immediately if a container does spill.
Make sure that construction waste is collected, removed, and disposed of only at authorized
disposal areas.
Collection, Storage. and Disposal
Littering on the project site should be prohibited.
To prevent clogging of the storm drainage system, litter and debris removal from drainage
grates, trash racks, and ditch lines should be a priority.
Trash receptacles should be provided in the contractor's yard, field trailer areas, and at
locations where workers congregate for lunch and break periods.
Litter from work areas within the construction limits of the project site should be collected
and laced in watertight dumpsters at least weekly, regardless of whether the litter was
generated by he contractor, the public, or others. Collected litter and debris should not be
placed in or next to drain inlets, stormwater drainage systems, or watercourses.
Dumpsters of sufficient size and number should be provided to contain the solid waste
generated by the project.
Full dumpsters should be removed from the project site and the contents should be disposed
of by the trash hauling contractor.
Construction debris and waste should be removed from the site biweekly or more frequently
as needed.
Construction material visible to the public should be stored or stacked in an orderly manner.
Stormwater runon should be prevented from contacting stored solid waste through the use
of berms, dikes, or other temporary diversion structures or through the use of measures to
elevate waste from site surfaces.
Solid waste storage areas should be located at least 50 ft from drainage facilities and
watercourses and should not be located in areas prone to flooding or ponding.
Inspection and Maintenance
Inspect and verify that activity-bosed BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
to verify continued BMP implementation.
Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges
occur
Inspect construction waste area regularly
Arrange for regular waste collection.
CONCRETE WASHOUT
The following steps will help reduce stormwater pollution from concrete wastes:
Discuss the concrete management techniques described in this BMP (such as handling of
concrete waste and washout) with the ready-mix concrete supplier before any deliveries are
made.
Incorporate requirements for concrete waste management into material supplier and
subcontractor agreements.
Store dry and wet materials under cover, away from drainage areas.
Avoid mixing excess amounts of fresh concrete.
Perform washout of concrete trucks offsite or in designated areas only
Do not wash out concrete trucks into storm drains, open ditches, streets, or streams.
Do not allow excess concrete to be dumped onsite, except in designated areas.
For onsite washout:
- Locate washout area at least 50 feet from storm drains, open ditches, or
water bodies.
- Do not allow runoff from this area by constructing a temporary pit or
bermed area large enough for liquid and solid waste.
- Wash out wastes into the temporary pit where the concrete can set,
- be broken up, and then disposed properly
Avoid creating runoff by draining water to a bermed or level area when
- washing concrete to remove fine particies and expose the aggregate.
Do not wash sweepings from exposed aggregate concrete into the street
or storm drain. Collect and return sweepings to aggregate base stockpile
or dispose in the trash.
DIEWATERING AND PUMPING OPERATIONS
Description and Purpose
Dewatering operations are practices that manage the discharge
of pollutants when non-stormwater and accumulated precipitation
must be removed from a work location so that construction work
may be accomplished.
Suitable Applications
These practices are implemented for discharges of nonstormwater
from construction sites. Non-stormwaters include, but are not
limited to, groundwater, water from cofferdams, water diversions,
and waters used during construction activities that must be
removed from a work area. Practices identified in this section
are also appropriate for implementation when managing the
removal of accumulated precipitation (stormwater) from depressed
areas at a construction site.
Limitations
Site conditions will dictate design and use of dewatering
operations. The controls discussed in this best management
practice (BMP) address sediment only. The controls detailed in
this BMP only allow for minimal settling time for sediment
particles. Use only when site conditions restrict the use of the
other control methods. Dewatering operations will require, and
must comply with, applicable local permits.
Implementation
Dewatering discharges must not cause erosion at the discharge
point. A variety of methods can be used to treat water during
dewatering operations. Several devices are presented below and
provide options to achieve sediment removal. The size of
particles present in the sediment and Permit or receiving water
limitations on sediment are key considerations for selecting
sediment treatment option(s); in some cases, the use of multiple
devices may be appropriate.
Sediment Basin
Description:
A sediment basin is a temporary basin with a controlled release
structure that is formed by excavation or construction of on
embankment to detain sediment-laden runoff and allow sediment to
settle out before discharging. Sediment basins are generally larger than
Sediment Traps.
Appropriate Applications:
Effective for the removal of gravel, sand, silt, some metals that settle
out with the sediment, and trash.
Implementation:
Excavation and construction of related facilities is required.
Gravity Bag Filter
Description:
A gravity bag filter, also referred to as a dewatering bag, is a square or
rectangular bag made of non-woven geotextile fabric that collects sand,
silt, and fines.
Appropriate Applications:
Effective for the removal of sediments (gravel, sand, and silt). Some
metals are removed with the sediment.
Implementation:
Water is pumped into one side of the bag and seeps through the
bottom and sides of the bag.
A secondar barrier, such as a rock filter bed or straw/hay bale barrier,
Temporary sediment basins must be fenced if safety is a concern. y
is placed beneath and beyond the edges of the bog to capture
sediments that escape the bag.
Outlet protection is required to prevent erosion at the outfall location.
Maintenance:
Maintenance:
Inspection of the flow conditions, bag condition, bag capacity, and the
Maintenance is required for safety fencing, vegetation, embankment, inlet
secondary barrier is required.
nd outfall structures, as well as other features.
Removal of sediment is required when the storage volume is educed by
one-half.
Sediment Trap
Description:
A sediment trap is a temporary basin formed by excavation and/or
construction of an earthen embankment across a waterway or low
drainage area to detain sediment-laden runoff and allow sediment to
settle out before discharging. Sediment traps are generally smaller than
Sediment Basins.
Appropriate Applications:
Effective for the removal of large and medium sized particles (sand and
gravel) and some metals that settle out with the sediment.
Implementation:
Excavation and construction of related facilities is required.
Trap inlets should be located to maximize the travel distance to the
trap outlet.
Use rock or vegetation to protect the trap outlets against erosion.
Maintenance:
Maintenance is required for vegetation, embankment, inlet and outfall
structures, as well as other features.
Removal of sediment is required when the storage volume is reduced by
one-third.
Replace the bag when it no longer filters sediment or passes water at a
reasonable rate.The bag is disposed of offsite.
EVALUATION FOR CONSTRUCTION PROJECTS
A trained individual shall perform a written evaluation of the project site.
11
a. By the end of the next business day following each rainfall that exceeds 0.5
b. A minimum of one (1) time per week
Project Name:
Name of Trained Individual:
Is this l7voluation followino a rainfall
Yes
Date of Inspection:
No If ves. date the rain stomed:
Inches
No.
PROBLEM or CONCERN
YES
NO
N/A
1.
Is the site information posted at the entrance?
6
STORMWATER POLLUTION
2.
Are all necessary permits attained and special provisions being implemented?
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Is a construction entrance installed? Is it effective? Is it enough
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Public and private streets are clean?
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Are app opriate practices installed where stormwater leaves the site?
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Silt fence is entrenched into the ground?
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Silt fence is upright? Fabric and stakes meet specifications? Fabric is not to torn?
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Terminated to higher ground? Property joined at ends?
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Sediment basins and traps are installed according to the plan? The pipe or rock spillway is functional?
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1 The earthwork for erosion and sediment control practices is properly graded, seeded and/or mulched?
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10.
Diversions swales and/or waterbars are installed to plan and protected?
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Perimeter practices have adequate capacity and do not need to be cleaned out?
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Inlet protection is installed on all functional inlets? (not filter fabric under grate)
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Inlet protection is installed so water does not flow under it?
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14.
, The frame, cross-bracing and/or stakes are adequate and meet specifications?
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15.
The fabric, straw, mulch and/or stone is intact without holes or tears?
16.
Catch basin insert protection is installed where required?
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17.
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Sediment has been removed from the practice?
18.
Swales and ditches have been stabilized or protected?
19.
Stormwater outlets are adequately stabilized?
20.
Tempor ry stabilization of distributed ground has been addressed?
21.
Disturbed areas that will lie dormant for 15 days are planned to be protected?
22.
All protected dormant areas meet a minimum 70% coverage
23.
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Growing vegetation has sufficient water and/or nutrients to grow?
24.
Permanent stabilization of disturbed ground is progressing through the project?
25.
Final grading and stabilization is progressing on completed areas?
26.
roperly prepared for seeding?
27.
Hard or soft ormoring is installed where natural vegetation will erode?
Water pumping operations have a protected outlet and discharge water is clear?
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29.
A designated washout is established for concrete trucks?
30.
No sediment leaving washout area?
A dumpster is onsite for trash disposal?
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32.
Fuel tanks and other toxic materials are safely stored and protected?
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33.
Smaller construction sites not required to file a separate NOI are complying with the overall plan?
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ALL PROBLEMS OR CO DDRESSED WITH A CORRECTIVE ACTION
Identify the problem by number and/or provide additional explanation as needed.
Developer Representative contacted, name and date:
Contractor Representative contacted, name and date:
Report Submitted by:
Date:
Date:
Date:
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/ - / DATE/ 03/27/2013
THIS DRAWING AND THE IDEAS, DESIGNS AND
CONCEPTS CONTAINED HEREIN ARE THE EXCLUSIVE
INTELLECTUAL PROPERTY OF THE SCHNEIDER
CORPORATION, AND ARE NOT TO BE USED OR
REPRODUCED, IN WHOLE OR IN PART, WITHOUT
THE WRITTEN CONSENT OF THE SCHNEIDER
CORPORATION.
.1 @ COPYRIGHTED BY THE SCHNEIDER CORP. (2013J
11 1
Schneider
THE SCHNEIDER CORPORATION
Historic Fort Harrison
8901 Otis Avenue
Indianapolis, IN 46216-1037
Telephone: 317.826.7100
Fax: 317.826.7200
www.schneidercorp.com
Architecture
Civil Engineering
GIS * LIS
Home Builder Services
Interior Design
Land Surveying
Landscape Architecture
Transportation Engineering
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PROJECT NO.:
03/27/13
1238.8002A
DRAWN BY:
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DCC
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STORMWATER POLLUTION
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DATE:
PROJECT NO.:
03/27/13
1238.8002A
DRAWN BY:
CHECKED BY:
DCC
SHEET TITLE:
STORMWATER POLLUTION
PREVENTION DETAILS
DRAWING FILES:
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SHEETNO.:
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