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samples from representative wood pilings, and exact locations will be documented in the field log book. A flat-bottomed boat capable of-holding a minimum of 2 people, including sampling equipment and supplies will be used to ;enter the area below the parking lot. Flashlights or other illumination devices will be required during sampling. Sampling will take place during low tide, such that:portions of the wood piers typically submerged may be sampled. A minimum of one sample from above the high water line (if feasible) and one sample from above the zone of tidal fluctuation will be sampled provided that both locations can be safely sampled from the boat at low tide. Four random piling samples will be collected using a hand saw, drill, or a coring device such as a hand held bracer bit. An adequate amount of wood (preferably shavings) shall be collected within the specific piling The' shavings from the piling will, be placed in the appropriate containers. The wood submitted will be pulverized to the extent possible. The containers will . be packaged and shipped to the laboratory for'semivolatile organic compound analysis. 6.5 Groundwater Sampling rr As discussed in Section 6.2, the PDiedrich probe will be used for soil and groundwater sampling. Water samples will be collected by inserting a slotted rod in place of the soil sampler. Both the inner and outer rods are driven to the desired depth. The outer rod is then withdrawn exposing the inner rod to the saturated zone. The groundwater is then collected using a peristaltic pump fitted with new tubing lowered to the depth to water.. A small portion of water may be purged prior to sampling in order to remove some of fine-grained sediments that may have become dislodged during installation of probe. One grab groundwater samples will be collected at sample locations WB-GW1 to WB-GW4 and analyzed for volatile organic compounds plus MTBE, semivolatile organic compounds;pesticides, metals, and TPH for gasoline. Groundwater samples will be collected first for VOC analysis to prevent VOC loss. No headspace or air bubbles will be allowed in the container. if an air bubble is noted, the sample will be discarded and another sample collected. The samples!will be decanted from peristaltic pump tubing.directly into the appropriate pre-preserved sample container. No filters will be.used for metals analysis. The samples will be stored on ice and processed for shipment:to the laboratory. After the groundwater sample has been collected, the probe rods will be removed by installing / a pull capon the probe rod and pulled upward using-the hydraulics of the drill rig. Probe holes I' 4 Y will be filled with either neat cement or bentonite grout. The probe holes will be backfilled by 'k pulling the probe rod and grouting t e open o e. t ere is a possibility for the probe hole to collapse, the grout may be pumped into the outer rod and withdrawn to insure a proper seal of the probe hole. p nA362IM98SAPlwebsap2.wp5 WEBER BLOCK (Area 9) Sampling and Analysis Plan Page 14 F 1