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Rally's Stockton Work Plan 7 Project No. 91349.A the bore, proceed with the excavation to confirm the presence of ground water. SOP 8 The best method to get undisturbed, representative soil samples is using the slide-hammer core sampler. Count the number of blows required to drive the sampler 6 inches and record the count on the soil log. However, in some rocky situations, that won't be possible. An alternative method of collecting samples is to sample from a backhoe bucket. With the bucket outside of the excavation, use a trowel to scrape off 3 or 4 inches of soil from the surface and either push a brass tube into the soil by (gloved) hand, or pound the tube into the soil with a rubber, brass or wooden mallet. Before capping the tube, make sure that the tube is full of soil and that there is no air space in the tube. When the tube is observed full, cover both ends of the tube with teflon, cap both ends with the red polyethylene caps, and seal the caps onto the tube with duct tape. Do not use electrician's tape because the glue used on this tape contains Toluene. Also, mark the end of the tube to be tested with an "T". The end to be tested is usually the end which was in the bottom of the hole (the tip of the core sample). Label the samples, record all pertinent information on the sample and on the chain-of-custody form, place the tube into a zip-lock bag and immediately place the sample in a cooler containing block or crushed ice. SOP 9 Clean the core sampler, auger and bit extensions between samples and holes to preclude cross-contamination. If a steam-cleaner is not available, use a soap (alkanox) wash followed by a tap-water rinse, followed by a de- ionized water rinse. Allow tools to air-dry or wipe with a paper towel. Use DOT 55-H drums to contain all rinsing fluids and solid waste on the site. SOP 10 Generally, arrangements should be made to abandon drill holes with a cement/bentonite slurry. However, if there appears to be little or no contamination problem, the inspector may permit the original soil to be returned---Nb to the excavation the same day that the sample is pulled. If the excavation is to be left open, the perimeter should be well marked and protected with safety cones, yellow flagging and fencing to prevent accidents. If fencing is not practical, securely cover the excavation and tape off your safety zone. SOP 11 Before the contaminated soil can be transported off-site, a properly completed manifest may need to be signed by the property owner, generator and transporter. Check the manifest carefully to make sure it has been completed and signed correctly. vt n.�