HomeMy WebLinkAboutTables 7 8 from Construction Program (2021 MS4 Permit)MS4 DISCHARGES WITHIN THE ORDER R4-2021-0105
LOS ANGELES REGION NPDES NO. CAS004004
PROVISIONS 63
implementation of an effective combination of erosion and sediment control BMPs
from Table 7 and/or Table 8 of this Order (where applicable) to prevent erosion and
sediment loss, and the discharge of construction wastes.
Table 7. Minimum Set of BMPs for All Construction Sites
Site Management Housekeeping
Erosion Controls
Scheduling
Preservation of Existing Vegetation
Wind erosion controls
Sediment Controls Perimeter controls (e.g. Silt Fence, Sandbag Barriers, etc.)
Stabilized Construction Site Entrance/Exit
Non-Stormwater
Management
Water Conservation Practices
Dewatering Operations
Waste Management
Material Delivery and Storage
Stockpile Management
Spill Prevention and Control
Solid Waste Management
Concrete Waste Management
Sanitary/Septic Waste Management
Table 8. Minimum Required BMPs for Roadway Paving or Repair Operation (For Private or
Public Projects)
1 Restrict paving and repaving activity to exclude periods of rainfall or predicted rainfall unless
required by emergency conditions.
2 Install gravel bags and filter fabric or other equivalent inlet protection at all susceptible storm
drain inlets and at manholes to prevent spills of paving products and tack coat.
3 Prevent the discharge of release agents including soybean oil, other oils, or diesel to the
stormwater drainage system or receiving waters.
4 Minimize non stormwater runoff from water use for the roller and for evaporative cooling of the
asphalt.
5 Clean equipment over absorbent pads, drip pans, plastic sheeting or other material to capture all
spillage and dispose of properly.
6 Collect liquid waste in a container, with a secure lid, for transport to a maintenance facility to be
reused, recycled or disposed of properly.
7 Collect solid waste by vacuuming or sweeping and securing in an appropriate container for
transport to a maintenance facility to be reused, recycled or disposed of properly.
8 Cover the "cold-mix" asphalt (i.e., pre-mixed aggregate and asphalt binder) with protective
sheeting during a rainstorm.
9 Cover loads with tarp before haul-off to a storage site, and do not overload trucks.
10 Minimize airborne dust by using water spray or other approved dust suppressant during
grinding.
11 Avoid stockpiling soil, sand, sediment, asphalt material and asphalt grindings materials or rubble
in or near stormwater drainage system or receiving waters.
12 Protect stockpiles with a cover or sediment barriers during a rain.
b. Construction Site Inspection. Inspect construction sites as needed based on the
evaluation of the factors that are a threat to water quality. In evaluating the threat to