silo 3 - U.S. Department of Energy

Silo 3 Environmental Control Plan
40430-PL-0005, ___ Rev. C
-JacobTPSject-NGKberL35H 1 9605
September 23, 2003
The type and location of erosion control features will be subject to adjustment depending
on field conditions. The Contractor will routinely inspect and evaluate (in accordance with
Section 3.2) the effectiveness of, and need for maintenance of, the control measures that
are in place.
3.2 RUN-ON/RUNOFF CONTROL STRUCTURAL PRACTICES
Process design and operation will minimize the potential for generation of contaminated
stormwater, including any run-on and runoff. A description of the construction,
inspection, and maintenance of the run-onhunoff control features is presented in this
section. These features may include, but will not be limited to:
0 Drainage channels and swales,
0 Riprap check dams,
Culverts,
Silt fences, and
0 Diversions.
Details of silt fences, check dams, and diversions can be seen in Appendix A. Any repairs
to the erosion and stormwater control measures will be performed within 24 hours of a
problem being discovered. Areas of excavation and all erosion control measures will be
inspected to verify that they are installed in accordance with the Silo 3 specifications and
are still functioning properly. An inspection checklist will be developed in support of the
inspection schedule. Disturbed areas will also be inspected for evidence of excessive
erosion or siltation. These inspections will occur, at a minimum, at the following
frequency:
0 Weekly for general inspections;
Daily after each rain event exceeding 0.5 inches; and
At least once per day during prolonged rainfall events.
Inspections will be documented in the daily reports at the Silo 3 Project site. These
records will be made available for review upon request. This inspection frequency is in
addition to any specific requirements identified in the Inspection and Maintenance
requirements for each control measure below.
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