NCS000494_Lewisville PP-GH SOP_20200722

TOWN OF
LEWISVILLE
Pollution Prevention and
Good Housekeeping for
Munliicl'Toal ODerations
Standard Operating Procedures

Town of Lewisville
Standard Operating Procedures
Contents
CatchBasin Cleaning.......................................................................................................................
3
CatchBasin Repair..........................................................................................................................
4
Erosionand Sediment Control.........................................................................................................
5
GarbageStorage.............................................................................................................................
6
General Facilities Housekeeping.....................................................................................................
7
Landscape Design and Management.....................................
........................................................ 8
Lawn Care: Fertilizer and Pesticide Storage and Disposal..............................................................
9
Lawn Care: Fertilizing and Turf Health.........................................................................................
10
Lawn Care: Mowing and Irrigation..................................................................................
.... 11
Lawn Care: Weed and Pest Control.............................................................................................. 12
OutfollRepair................................................................................................................................ 13
Painting......................................................................................................................................... 14
Petroleum and Chemical Handling............................................................................................... 15
Petroleum and Chemical Storage.................................................................................................
16
SpillClean Up................................................................................................................................
17
Storm water System Repair........................................................................................................... 18
StreetSweeping...........................................................................................................................
19
Vehicle and Equipment Fueling.....................................................................................................
20
Vehicle and EquipmentStorage....................................................................................................
21
Vehicle and Equipment Washing.................................................................................................. 22
1

Town of Lewisville
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Standard Operating Procedure for:
Catch Basin Cleaning
Purpose of SOP: To protect stormwater by maintaining the ability of catch
basins to trap sediments, organic matter, and litter. This reduces clogging in the
storm drain system as well as the transport of sediments and pollutants into
receiving water bodies.
Always:
• Inspect catch basins for structural integrity and evidence of illicit discharges
during cleaning.
• Conduct a chemical analysis if sediment is suspected of contamination to
determine if the recovered materials meet the EPA criteria for hazardous waste.
• Dispose of catch basin residues properly (Construction Demolition Debris Landfill
or secure solid waste or special waste landfill).
Whenever Possible:
• Inspect each catch basin as needed, and during required catch basin cleaning.
• Perform street sweeping on an appropriate schedule to reduce the amount of
sediment, debris and organic matter entering the catch basins, which in turn
reduces the frequency with which they will need to be cleaned.
3,1

Town of Lewisville �...`.�..`
Standard Operating Procedure for:
Catch Basin repair
Purpose of SOP. To protect storm water by inspecting, testing, and replacing or
repairing equipment on a regular basis to prevent a failure of stormwater
structures.
Always:
• Practice preventive maintenance and inspect on a regular schedule for cracks,
leaks, and other conditions that could cause breakdowns in the system (this can
be done during the cleaning process).
• Repair defective equipment or structures identified during an inspection as soon
as possible.
• Educate personnel on preventive maintenance inspections.
Whenever Possible:
• Research and implement new technology that will improve the overall
performance of the catch basin.
Never-,
s Never allow defective equipment or structures to go unrepaired.

Town of Lewisville
Standard Operating Procedure for:
Erosion and Sediment Control
Purpose of SOP: To protect stormwater from pollution by reducing or
eliminating pollutant loading from land disturbing activities.
Always:
• Use erosion control techniques or devices to stabilize disturbed areas.
• Use effective site planning to avoid sensitive areas.
• Keep land disturbance to a minimum.
• Inspect and maintain erosion control devices.
• Install erosion control devices properly.
• Install erosion control blankets when seeding drainage ways.
Whenever Possible:
• Protect disturbed areas from stormwater runoff by using stabilizers such as
mulch.
• Limit construction activities during months with higher runoff rates.
• Assign responsibility for maintaining erosion control devices.
• Reduce the velocity of stormwater runoff.
• Divert clean water away from the disturbed area during construction activities.
• Protect vegetative buffers or create new ones.
• Stabilize soils by mulching and/or seeding when soils are exposed for more than
one week during the dry season, and two days during the rainy season.
Never:
• Never divert runoff into a sensitive area.
5

Town of Lewisville
Standard Operating Procedure for:
Garbage Storage
Purpose of SOP: To protect stormwater from contamination by properly
storing garbage. Garbage and leach ate can be transported by
stormwater and enter the storm drain system and receiving water
bodies.
Always:
• Dispose of hazardous materials according to manufacturer's specifications and
applicable regulations.
• Cover rubbish bins to keep rubbish and leach ate in and wind and rain out.
Whenever Possible:
• Store garbage containers beneath a covered structure or inside to prevent
contact with stormwater.
• Install berms, curbing or vegetation strips around storage areas to control water
entering/leaving storage areas.
• Locate dumpsters on a flat, concrete surface that does not slope or drain directly
into the storm drain system.
• Locate dumpsters and trash cans in convenient, easily observable areas.
• Provide properly -labeled recycling bins to reduce the amount of garbage
disposed.
• Inspect garbage bins for leaks regularly, and have repairs made immediately by
responsible party.
• Keep bins free of improperly discarded trash.
• Provide training to employees to prevent improper disposal of general trash.
• Minimize waste by purchasing recyclable products that have minimal packaging.
• Request/use dumpsters without drain holes.
Never:
Never place hazardous wastes in a dumpster or trash bin.
6

Town of Lewisville �
Standard Operating Procedure for:
General Facilities Housekeeping
Purpose of SOP., To protect stormwater by maintaining a clean,
organized facility.
Always:
• Keep a tidy facility.
• Store hazardous materials as specified by the manufacturer.
Whenever Possible:
• Store materials and wastes inside or under cover if outside.
• Substitute less or non -toxic materials for toxic ones.
• Perform a routine clearing of the facility.
• Inspect facility (interiors, exterior, parking areas, etc.) for stains.
• Conduct regular employee training and public education to reinforce proper
housekeeping.
-
7
d

Town of Lewisville
Standard Operating Procedure for:
Landscape Design and Management
Purpose of SOP: To protect stormwater by designing and managing
landscaping in ways that minimizes polluted runoff.
Always:
• Design landscaping by taking into account soil types, light, drainage, desired
maintenance level and budget.
Whenever Possible:
• Minimize erosion prone steep slopes by using techniques such as terracing.
• Use native plants that are pest resistant. Plant the right plant in the right area.
• Manage water runoff by rerouting gutters away from storm drains and
maintaining groundcovers between developed areas and waterways (ditches,
swales, shorelines).
• Reduce or eliminate mown lawn in unused areas.
• Convert unused turf to meadow or forest.
• Establish set back distances from pavement, storm drains, and water bodies.
• Allow these areas to serve as buffers with disease -resistant plants and minimal
mowing.
Never:
• Never develop a landscape design without assessing its impact on water quality.

Town of Lewisville
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Standard Operating Procedure for:
Lawn Care: Fertilizer and Pesticide Storage and
Disposal
Purpose of SOP: To protect stormwater by properly storing and
disposing of fertilizers and pesticides. Because storm drain water is not
part of a wastewater treatment system, discharge of these chemicals
flow untreated into ponds, lakes, rivers, streams, estuaries and bays.
Always:
• Store fertilizers and pesticides in high, dry locations, according to manufacturer's
specifications and applicable regulations.
• Cleanup spills and leaks of pesticides and fertilizers to prevent the chemicals
from reaching the storm drain system.
• Clearly label secondary containers.
• Properly dispose of fertilizers and pesticides according to manufacturer's
specifications and applicable regulations.
• Regularly inspect fertilizer and pesticide storage areas for leaks or spills.
Whenever Possible:
• Store pesticides in enclosed areas or in covered impervious containment,
preferably in a locked cabinet.
• Order fertilizers and pesticides for delivery as close to time of use as possible to
reduce amount stored at facility.
• Order only the amount needed to minimize excess or obsolete materials
requiring storage and disposal.
• Use ALL herbicides or pesticides appropriately to minimize the amount of
chemicals requiring disposal.
• Dispose of old, unusable or "obsolete" pesticides as in accordance with
applicable regulations.
Never:
• Never dispose of fertilizers or pesticides in storm drains.
• Never leave unlabeled or unstable chemicals in uncontrolled locations.

Town of Lewisville "
Standard Operating Procedure for:
Lawn Fare: Fertilizing and Turf Health
Purpose of SOP: To protect stormwater by properly storing, applying,
and disposing of fertilizers and by maintaining turf health to reduce
diseases.
Always:
• Apply fertilizers based on a soil testing program, soil type, turf function, and
assessment by qualified personnel.
• Store, use, and dispose of all fertilizers and contaminated wastes according to
manufacturer's specifications and applicable regulations,
• Choose seed based on soil types, intended use of area, latest variety research,
and assessment of past site performance.
Whenever Possible:
• Avoid fertilizing during a drought or when the soil is dry.
• Apply fertilizers during periods of maximum plant uptake (usually fall and spring).
• Avoid combined products such as weed and feed, which do not necessarily
target specific problems at the appropriate time.
• Calibrate application equipment to ensure proper application.
• If phosphorus fertilizer is used when re -seeding, mix phosphorus into root zone.
• Use natural compost and organic fertilizers instead of synthetic fertilizers.
• Aerate grassed areas to improve drainage and bring more oxygen to the soil.
Never:
• Never fertilize before a heavy rainfall.
• Never apply phosphorus fertilizer on soil surface.
• Never deposit fertilizer in the water, onto the street or into storm drains.
• Never apply fertilizer to frozen ground.

Town of Lewisville
Standard Operating Procedure for:
Lawn Care: Mowing and Irrigation
Purpose of SOP: To protect stormwater by using proper mowing and
watering techniques. Proper mowing and irrigation techniques will
reduce organic matter and other pollutants from entering the storm
drain system and water bodies.
Always:
• Mow only as low as needed for the area's intended use.
• Vary mowing pattern.
• Base irrigation amounts on monitoring for moisture content.
• Water at appropriate times (when no rain is forecasted).
• Manage leaves, clippings, and compost so that runoff does not enter storm drain
system or water bodies.
Whenever Possible:
• Keep mower blades sharpened to avoid damaging grass leaf tissue.
• Mow when the grass is dry to prevent spread of turf diseases.
• Sweep or blow lawn clippings and debris instead of using water.
• Mulch grass clippings using a mulching mower.
• Fill gas tanks in a controlled location.
Never:
• Mow an area just because it always has been mowed.
• Irrigate based on time rslschedules instead of monitoring for moisture content.
• Never dump gas, wastes or contaminated water down storm drains.
• Never refuel or change the mower oil near storm drains.

Town of Lewisville:
Standard Operating Procedure for:
Lawn Care; Weed and Pest Control
Purpose of SOP: To protect stormwater by properly storing, applying
and disposing of herbicides and pesticides.
Always:
• Ensure that pesticides are only applied by personnel certified to do so.
• Use, store, and dispose of all chemicals and waste products according to
manufacturer's specifications, the Maine Pesticides Control Board and any local
requirements.
• Clean up any spilled chemicals.
• Store pesticide and herbicide -contaminated waste materials in a labeled,
designated, covered, and contained area.
• Use pesticides and herbicides only when necessary.
• Rinse equipment only when necessary and use rinse water to dilute next mix as
long as application rates are not exceeded.
Whenever Possible:
• Use alternative methods to control weeds and pests such as Integrated Pest
Management strategies, biological insecticides (natural soaps and oils) or other
biological controls.
• Mix/load pesticides in an area where spills can be contained.
• Pull weeds by hand or mechanically.
• Spot treat affected areas only instead of entire location.
• Apply pest control at the life stage when the pest is most vulnerable.
• Choose the least toxic pesticides and herbicides that still achieve results.
• Tolerate low levels of weeds.
• Allow grass to grow 2.5 to 3 inches high, reduce thatch build up and aerate soils.
• Reduce seed release of weeds by timing cutting at seed set.
• Establish setback distances from pavement, storm drains, and water bodies;
allow these areas to serve as buffers with disease -resistant plants and minimal
mowing.
Never:
• Never mix or prepare pesticides or herbicides near storm drains.
• Never apply controlled pesticides or herbicides unless certified to do so.
• Never apply herbicides or pesticides before a heavy rainfall.
• Never discharge rinse water or excess chemicals to storm drain, sewer, or
ground surface in excess of labeled rates.

Town of Lewisville
Standard Operating Procedure for:
Outfall Repair
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Purpose of SOP: To protect stormwater by inspecting, testing, and
replacing or repairing equipment on a regular basis to prevent a
failure of stormwater structures.
Always:
• Locate all outfalls in the municipality and create an inspection schedule.
• Practice preventive maintenance and inspect at least one time per year for
cracks, leaks, and other conditions that could cause breakdowns in the system.
• Repair defective structures or equipment identified during an inspection as soon
as possible.
• Educate personnel on preventive maintenance inspections.
Whenever Possible:
• Research and implement new technology that will improve the overall
performance of the outfall.
Never:
• Never allow defective equipment or structures to go unrepaired.
13
3

Town of Lewisville
Standard Operating Procedure for:
Painting
Purpose of SOP: To protect stormwater by properly storing, using and
disposing of paint and preparation materials.
Always:
• Store waste paints, solvent, and rags in covered containers.
• Perform abrasive blasting and spray painting in accordance with regulations.
• Properly clean, store, and dispose of paint and associated waste materials.
• Train employees on Best Management Practices concerning painting activities,
cleanup and disposal.
Whenever Possible:
• Use less toxic paints such as latex or water -based paints.
• Use drop cloths under any painting or preparation activity such as scraping or
sandblasting.
• Use techniques such as brushing and rolling to avoid overspray.
• Use vacuum sanders to collect paint dust.
• Perform abrasive blasting and spray painting in an enclosed or covered area that
is safe for personnel.
Never:
• Never dispose of paint or waste paint products into the storm drain system, a
water body, or onto the ground.

Town of Lewisville
Standard Operating Procedure for:
Petroleum and Chemical Handling
Purpose of SOP: To protect stormwater by properly managing
petroleum products and chemicals used by municipalities.
Always:
• Train employees in hazardous material handling, safety, spill cleanup and
reporting on an annual basis.
• Handle petroleum products and chemicals according to manufacturer's
specifications.
• Conduct oil changes indoors for equipment that fits indoors.
• Use proper protective equipment.
• Maintain Material Safety Data Sheets (MSDS) for all chemicals used.
• Make MSDS sheets available on materials that require special handling, storage
and/or disposal.
Whenever Possible:
• Assess hazardous material needs to minimize the amount and variety of
hazardous material in storage.
• Transfer materials from one container to another indoors in a well ventilated
area. Properly label containers.
• Train new employees within six months of hire.
Never:
• Never treat or dispose of hazardous materials unless licensed to do so.
• Never mix petroleum or chemicals unless directed by manufacturer's instructions.

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�`�� Town of Lewisville -
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Standard Operating Procedure for:
Petroleum and Chemical Storage
Purpose of SOP; To protect stormwater from petroleum and chemical
products due to improper disposal practices.
Always:
• Dispose of petroleum/chemicals according to manufacturer's specifications and
state and federal regulations.
• Store waste petroleum/chemical products in a designated area labeled as such.
• Label each waste container with its contents.
• Tram employees on proper disposal practices.
• Inspect waste storage areas for staining/leaks on a regular basis.
Whenever Possible:
• Minimize the number of solvents used to reduce the variety of waste generated
and to make recycling easier.
• Use safer alternatives.
Never:
• Never place hazardous waste in solid waste dumpsters.
• Never pour liquid waste down floor drains, sinks or outdoor storm drain inlets.
• Never mix petroleum waste and chemical waste.
• Never dispose of any gasoline -contaminated waste in the regular trash, Dispose
of it only as a hazardous waste.

Town of Lewisville
Standard Operating Procedure for:
Swill Clean Up
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Purpose of SOP: To protect stormwater by edLlcating employees on
proper spill cleanup procedures, state reporting requirements and
preventative actions.
Always:
• Stop the source of the spill.
• Contain any liquids.
• Contact the Public Works Director and Stormwater Administrator to report any
size spill.
• Cover the spill with absorbent material such as kitty litter, sawdust, or oil
absorbent pads. Do not use straw. Dispose of used absorbent material properly.
• Use water only when necessary and minimize use.
• Fit petroleum and chemical storage containers with secondary containment
structures.
• Keep a spill kit in areas where petroleum or hazardous materials are stored.
• Train employees in spill response procedures and equipment.
• Position mats to contain drips from equipment or vehicles until they can be
repaired.
Whenever Possible:
• Seal the floor with paint to prevent absorption of fluids into concrete.
• Install low-level or low-pressure alarms andlor cut-off systems on hydraulic
equipment.
Never:
• Never wash a spill into the storm drain or a water body.
• Never leave a spill without cleaning it up.
17

Town of Lewisville
Standard Operating Procedure for:
S ormwater System Repair
Purpose of SOP: To protect stormwater by inspecting, testing, and
replacing or repairing equipment on a regular basis to prevent a
failure of the storm drain system.
Always:
• Create an inspection and cleaning schedule for the municipal storm drain
system, including stormwater detention ponds, energy dissipaters and associated
structures.
• Practice preventive maintenance and inspect at least one time per year for
cracks, leaks, and other conditions that could cause breakdowns in the system.
• Repair defective structures or equipment identified during an inspection as soon
as possible.
• Dispose of collected materials according to state, regional and local regulations
to avoid negative environmental impacts.
• Use appropriate erosion and sediment control practices when performing repairs.
Whenever Possible:
• Research and implement new technology that will improve the overall
performance of the storm drain system.
• Perform street sweeping on a regular basis to reduce the amount of sediment,
debris and organic matter entering the storm drain system, which in turn reduces
the frequency with which the system will need to be cleaned.
Never:
Never allow defective equipment or structures to go unrepaired.

Town of Lewisville
Standard Operating Procedure for:
Street Sweeping
Purpose of SOP: To remove sediment, debris and other pollutants from
streets, parking areas, and paved surfaces through regular, properly
timed sweeping schedules.
Always:
• Dispose of sweeping residual properly.
• Sweep in a pattern that prevents materials from being pushed into storm
drains/catch basin inlets.
Whenever Possible;
• Perform additional sweeping on a seasonal schedule.
• Street sweep before a major rain event.
• Use dry vacuum assisted street sweepers (the most effective).
• Maintain street sweeping equipment for maximum effectiveness.
• Locate storage and disposal areas and manage street sweeping waste so that
wastes cannot be transported into storm drain systems, water bodies or
wetlands.
Never:
• Never store street sweeping residuals in areas where stormwater could transport
fines to the storm drain system or a water body,

Town of Lewisville
Standard Operating Procedure for:
Vehicle and Equipment Fueling
Nirpose of SOP. To prevent stormwater contamination originating from
vehicle and equipment fuels.
Always:
• Fuel carefully to minimize drips to the ground surface.
• Maintain clean fuel dispensing areas using dry cleanup methods.
• Utilize fueling safeguards. Clearly label and tag all valves to reduce human error.
• Train employees and subcontractors on proper fueling methods and spill cleanup
techniques.
• Maintain fuel storage tanks in accordance with local, state and federal laws.
• Have absorbent spill cleanup kits and materials available at fueling areas.
• Immediately clean up spills and properly dispose of contaminated soil and
cleanup materials.
Whenever Possible:
• Use designated fueling areas built upon a level impervious surface (hard cement
is best). If paved with asphalt, add a protective coating to create an impervious
surface.
• Design fueling areas to minimize stormwater exposure. Prevent run-on of water,
and use secondary containment systems.
• Protect storm drains from fueling areas using berms and dikes.
• Use drip pans or absorbent pads during fueling to collect leaks.
• Add automatic shutoff mechanisms and vapor recovery nozzles to fueling
equipment.
• Install protective guards around fueling equipment, tanks, and piping to prevent
collisions.
Never:
• "Top off' fuel tanks. Post signs to remind employees.
• Hose down or bury a fuel spill.

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Town of Lewisville
Standard Operating Procedure for:
Vehicle and Equipment Storage
Ptirpose of SOP: To protect stormwater from petroleum products that
may drip or leak from vehicles and equipment being stored or from dirt
and sediment that accumulate in the storage areas.
Always:
• Inspect parking areas for staining/leaks by the appropriate personnel.
• Use drip pans for vehicles that drip a lot (provide a labeled location to empty and
store drip pans).
• Address a known leak or drip as soon as possible.
Whenever Possible:
• Store vehicles and equipment inside.
• Store vehicles on paved areas if you can street sweep regularly to remove
drips/leaks/dirt.
• Perform street sweeping of paved areas on a schedule established by the
appropriate personnel, and dispose of street sweepings properly.
• Maintain vehicles to prevent leaks from occurring.
Never:
• Never store leaking vehicles over a storm drain.
2 1

Town of Lewisville
Standard Operating Procedure for.
Vehicle and Equipment Washing
Purpose of SOP: To protect stormwater using proper vehicle and
equipment washing techniques, proper washing locations, and proper
disposal of wash water.
Always:
• Wash vehicles and equipment in a designated area.
• Discharge all wash water containing degreasers, acids, bases, and/or metal
brighteners to an on -site treatment facility, the sanitary sewer in accordance with
the treatment plant standards, or an approved holding tank. If these are not
available, discharge to a vegetated buffer.
Whenever Possible:
• Use a biodegradable, phosphate free soap.
• Use a commercial car wash for light duty vehicles.
• Wash cars on gravel, grass, or other permeable surfaces.
• Educate personnel on proper washing practices.
• Maintain vehicles and equipment to prevent leaks/drips, which would more easily
enter wash water.
• Obtain and use drain guards (filter inserts) to catch sediments, petroleum
products, etc. that might enter the storm drains as a result of vehicle washing.
• Minimize water and soap use when rinsing or washing vehicles.
Never:
• Never perform engine washing outside or over a storm drain.
• Never wash vehicles over a storm drain or near drinking water wells.
22