environmental assessment for the hog lake road improvement project

Ramona Hog Lake Road Improvement Project August 2011
disturbance to allow rapid closure when weather conditions deteriorate. Do not leave
project areas for the winter with remedial measures incomplete.
Construction of Stable Embankments (Fills) (PRACTICE: 2-10) - To minimize fill
failures, design and construct the roadway as a stable and durable earthwork
structure with adequate strength to support the treadway, shoulders, subgrade and
the roads traffic loads.
Control of Sidecast Material During Construction and Maintenance
(PRACTICE: 2-11) - Sidecasting is an unacceptable construction alternative in areas
where it can adversely impact water quality. Prior to the start of construction, or
maintenance activities, waste areas must be located where excess material can be
deposited and stabilized. During road maintenance operations, potential sidecast
and other waste material will be utilized on the road surface or removed to
designated disposal sites.
Servicing and Refueling of Equipment (PRACTICE: 2-12) - During servicing and
refueling of road construction equipment, any spilled pollutants can be transported
by runoff to surface waters. If the volume of fuel exceeds 660 gallons in a single
container, or if total storage at a site exceeds 1,320 gallons, project Spill Prevention,
Containment and Counter Measures (SPCC) plans are required.
Control of Construction and Maintenance Activities Adjacent to SMZs
(PRACTICE: 2-13) - To protect water quality by controlling construction and
maintenance actions within and adjacent to any streamside management zone so
that the following SMZ functions are not impaired:
1) Acting as an effective filter for sediment generated by erosion from bare surfaces,
road fills, dust drift, and oil traces;
2) Maintaining shade, riparian habitat (aquatic and terrestrial), and channel
stabilizing effects;
3) Keeping the floodplain surface in a resistant, undisturbed condition to slow water
velocities and limit erosion by flood flows.
Controlling In-Channel Excavation (PRACTICE: 2-14) - Excavation during the
installation of instream structures must follow all of the following minimum water
quality protection requirements.
1) Unless otherwise approved, no excavation will be made outside of caissons, cribs,
cofferdams, or sheet piling.
2) The natural streambed or lake bottom adjacent to the structure will not be
disturbed without prior approval of the ER or COR.
3) If any excavation, or dredging is made at the site of the structure before caissons,
cribs, or cofferdams are sunk in place, all such excavations will be restored to the
original surface and the streambed or lake bottom must be protected with suitable
stable material.
4) Material deposited within the steam or lake area from foundation, or other
excavation will not be discharged directly into live streams or lakes, but will be put
Frank Springer & Associates, Inc. Page 65 of 79 Environmental Assessment