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Soil Investigations for Data Collection in the Delta Initial Study/Proposed Mitigated Negative Declaration xx b. Absorbent materials will be available on-site. Any accidental leaks or spills will be immediately cleaned up per the procedures identified in the contractors Spill Prevention and Response Plan, and the equipment will not be able to return to the project area until it has been repaired sufficiently to prevent further leaks or spills. c. For overwater soil investigations positive barriers consisting of hay waddles and/or other suitable type of spill-stoppage materials will be placed around the work area on the barge and ship decks. d. Discarded soil samples, cuttings, and excess drilling fluids will be kept in a closed system, to prevent spillage of the drilling fluid and will be disposed of off-site at an appropriate landfill. e. All over-water work will include the use of conductor casings to confine the drill fluid and cuttings to the drill hole and the operating deck of the barge or drill ship and prevent any inadvertent spillage into the water. Soil samples will be collected from within the conductor casing. The casing will remain in place until the bore hole is complete and has been filled in, to minimize sediment disturbance of the slough or river bottom. f. During overwater soil investigations a qualified environmental monitor will watch for colored plumes (an indication that drilling fluid or other material is entering the water and may affect water quality). If found, activities will cease until appropriate corrective measures have been completed or it has been determined that the environment will not be harmed. MM NOI-1: All equipment will be properly tuned and shall utilize appropriate mufflers. MM PUB-1: a. A Plan(s) (often Contractor’s safety plan) with a section on Fire Protection and Prevention will be submitted to DWR for review and approval which incorporates fire safety measures on all equipment with the potential to create a fire hazard. b. The contractor will prepare a Safety Plan in accordance with the DWR protocols. MM TRANS-1: a. Where it is necessary, traffic controls (e.g. flaggers) will be put in place. Lanes may be closed off by traffic cones with flaggers posted to ensure the flow of traffic continues while maintaining safety measures for the crew. Traffic controls and lane closures will consider access for emergency services and be coordinated through the encroachment permit processes implemented by Caltrans and counties, with CHP coordination as required.