Attachment 13 - Revised Development PlansATTACHMENT 13
Construction Best Management Practices (BMPs)
Construction projects are required to implement year-round stormwater BMPs.
Non-Hazardous Materials
Berm and cover stockpiles of sand, dirt or other construction material
with tarps when rain is forecast or when they are not in use.
Use (but don’t overuse) reclaimed water for dust control.
Ensure dust control water doesn’t leave site or discharge to storm
drains.
Hazardous Materials
Label all hazardous materials and hazardous wastes (such as
pesticides, paints, thinners, solvents, fuel, oil, and antifreeze) in
accordance with City, County, State and Federal regulations.
Store hazardous materials and wastes in water tight containers, store
in appropriate secondary containment, and cover them at the end of
every work day or during wet weather or when rain is forecast.
Follow manufacturer’s application instructions for hazardous
materials and do not use more than necessary. Do not apply
chemicals outdoors when rain is forecast within 24 hours.
Arrange for appropriate disposal of all hazardous wastes.
Waste Management
Cover and maintain dumpsters. Check frequently for leaks. Place
dumpsters under roofs or cover with tarps or plastic sheeting secured
around the outside of the dumpster. A plastic liner is recommended to
prevent leaks. Never clean out a dumpster by hosing it down on the
construction site.
Place portable toilets away from storm drains. Make sure they are in
good working order. Check frequently for leaks.
Dispose of all wastes and demolition debris properly. Recycle
materials and wastes that can be recycled, including solvents, water-
based paints, vehicle fluids, broken asphalt and concrete, wood, and
cleared vegetation.
Dispose of liquid residues from paints, thinners, solvents, glues, and
cleaning fluids as hazardous waste.
Keep site free of litter (e.g. lunch items, cigarette butts).
Prevent litter from uncovered loads by covering loads that are being
transported to and from site.
Construction Entrances and Perimeter
Establish and maintain effective perimeter controls and stabilize all
construction entrances and exits to sufficiently control erosion and
sediment discharges from site and tracking off site.
Sweep or vacuum any street tracking immediately and secure
sediment source to prevent further tracking. Never hose down streets
to clean up tracking.
Materials & Waste Management Equipment Management &
Spill Control
Maintenance and Parking
Designate an area of the construction site, well away
from streams or storm drain inlets and fitted with
appropriate BMPs, for auto and equipment parking,
and storage.
Perform major maintenance, repair jobs, and vehicle
and equipment washing off site.
If refueling or vehicle maintenance must be done
onsite, work in a bermed area away from storm drains
and over a drip pan or drop cloths big enough to collect
fluids. Recycle or dispose of fluids as hazardous waste.
If vehicle or equipment cleaning must be done onsite,
clean with water only in a bermed area that will not
allow rinse water to run into gutters, streets, storm
drains, or surface waters.
Do not clean vehicle or equipment onsite using soaps,
solvents, degreasers, or steam cleaning equipment, and
do not use diesel oil to lubricate equipment or parts
onsite.
Spill Prevention and Control
Keep spill cleanup materials (e.g., rags, absorbents and
cat litter) available at the construction site at all times.
Maintain all vehicles and heavy equipment. Inspect
frequently for and repair leaks. Use drip pans to catch
leaks until repairs are made.
Clean up leaks, drips and other spills immediately and
dispose of cleanup materials properly.
Use dry cleanup methods whenever possible
(absorbent materials, cat litter and/or rags).
Sweep up spilled dry materials immediately. Never
attempt to “wash them away” with water, or bury
them.
Clean up spills on dirt areas by digging up and
properly disposing of contaminated soil.
Report significant spills to the appropriate local spill
response agencies immediately. If the spill poses a
significant hazrd to human health and safety, property
or the environment, you must report it to the State
Office of Emergency Services. (800) 852-7550 (24
hours).
Earthmoving
Grading and Earthwork
Schedule grading and excavation work
during dry weather.
Stabilize all denuded areas, install and
maintain temporary erosion controls (such
as erosion control fabric or bonded fiber
matrix) until vegetation is established.
Remove existing vegetation only when
absolutely necessary, plant temporary
vegetation for erosion control on slopes
or where construction is not immediately
planned.
Prevent sediment from migrating offsite
and protect storm drain inlets, drainage
courses and streams by installing and
maintaining appropriate BMPs (i.e. silt
fences, gravel bags, fiber rolls, temporary
swales, etc.).
Keep excavated soil on site and transfer it
to dump trucks on site, not in the streets.
Contaminated Soils
If any of the following conditions are
observed, test for contamination and
contact the Regional Water Quality
Control Board:
Unusual soil conditions, discoloration, -
or odor.
Abandoned underground tanks. -
Abandoned wells -
Buried barrels, debris, or trash. -
If the above conditions are observed,
document any signs of potential
contamination and clearly mark them so
they are not distrurbed by construction
activities.
Landscaping
Protect stockpiled landscaping materials
from wind and rain by storing them under
tarps all year-round.
Stack bagged material on pallets and
under cover.
Discontinue application of any erodible
landscape material within 2 days before a
forecast rain event or during wet weather.
Paving
Avoid paving and seal coating in wet
weather or when rain is forecast, to
prevent materials that have not cured
from contacting stormwater runoff.
Cover storm drain inlets and manholes
when applying seal coat, slurry seal, fog
seal, or similar materials.
Collect and recycle or properly dispose of
excess abrasive gravel or sand. Do NOT
sweep or wash it into gutters.
Sawcutting & Asphalt/Concrete Removal
Protect storm drain inlets during saw
cutting.
If saw cut slurry enters a catch basin,
clean it up immediately.
Shovel or vacuum saw cut slurry deposits
and remove from the site. When making
saw cuts, use as little water as possible.
Sweep up, and properly dispose of all
residues.
Concrete Management
Store both dry and wet materials under
cover, protected from rainfall and runoff and
away from storm drains or waterways. Store
materials off the ground, on pallets. Protect
dry materials from wind.
Wash down exposed aggregate concrete
only when the wash water can (1) flow onto
a dirt area; (2) drain onto a bermed surface
from which it can be pumped and disposed
of properly; or (3) block any storm drain
inlets and vacuum washwater from the
gutter. If possible, sweep first.
Wash out concrete equipment/trucks offsite
or in a designated washout area onsite,
where the water will flow into a temporary
waste pit, and make sure wash water does
not leach into the underlying soil. (See
CASQA Construction BMP Handbook for
properly designed concrete washouts.)
Dewatering
Discharges of groundwater or captured
runoff from dewatering operations must
be properly managed and disposed. When
possible, send dewatering discharge to
landscaped area or sanitary sewer. If
discharging to the sanitary sewer, call your
local wastewater treatment plant.
Divert run-on water from offsite away from
all disturbed areas.
When dewatering, notify and obtain
approval from the local municipality before
discharging water to a street gutter or storm
drain. Filtration or diversion through a basin,
tank, or sediment trap may be required.
In areas of known or suspected
contamination, call your local agency to
determine whether the ground water must be
tested. Pumped groundwater may need to be
collected and hauled off-site for treatment
and proper disposal.
Painting Cleanup and Removal
Never clean brushes or rinse paint
containers into a street, gutter, storm
drain, or stream.
For water-based paints, paint out brushes
to the extent possible, and rinse into a
drain that goes to the sanitary sewer.
Never pour paint down a storm drain.
For oil-based paints, paint out brushes to
the extent possible and clean with thinner
or solvent in a proper container. Filter and
reuse thinners and solvents. Dispose of
excess liquids as hazardous waste.
Sweep up or collect paint chips and dust
from non-hazardous dry stripping and
sand blasting into plastic drop cloths and
dispose of as trash.
Chemical paint stripping residue and chips
and dust from marine paints or paints
containing lead, mercury, or tributyltin
must be disposed of as hazardous waste.
Lead based paint removal requires a state-
certified contractor.
Painting & Paint RemovalConcrete Management
and Dewatering
Paving/Asphalt Work
Storm drain polluters may be liable for fines of up to $10,000 per day!
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