SITE INFORMATION AND CORRESPONDENCE

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� L SOIL SAMPLING BY HAND Sites that require shallow soil samples such as soil stockpiles, excavation sidewalls, backhoe buckets, surface contamination, shallow subsurface contamination etc., will be collected by hand. A relatively undisturbed sample shall be obtained 'in a clean brass liner. For shallow (generally"five feet or less) subsurface soil sampling use a steel core sampler equipped with a clean brass liner and advanced into the soil with a slide hammer. For soil stockpiles excavations and surface contamination, the outer surface of the soil is removed and a clean brass lir'er is immediately driven into the soil by hand or with a hammer. In deep excavations where safety factors preclude the direct sampling of the bottom or sidewall, soil js retrieved.by a backhoe bucket. I TOOL SELECTION AND OPERATION For soil stockpiles, backhoe buckets and surface contamination a shovel or trowel may be used to remove the surface of the soil. Dig or scrape away at least four inches of soil at the selected sample location. A brass liner should immediately be pushed into the soil by hand or if necessary driven with a hammer. To avoid damaging the liner hold a block of wood against the liner and hit the wood to drive the liner into the soil until full. i In cases where a deeper sample is required use a hand auger to dig to the required sample depth. Remove the hand auger and use a slide hammer sampler equipped with a clean brass liner to obtain the sample., The sampler .consists of a stainless steel shoe which holds the sample liner- Place a clean liner in the shoe and screw it tightly to the slide hammer. Place a chalk mark on the slide .hammer six inches above the ground surface and drive the sampler until the chalk mark is at the surface. Remove the sample by back-hitting the slide weight up against the handle of the slide hammer until the shoe is free. The hand auger and sampler shoe will be cleaned with water, then soap solution and then rinsed with distilled water between samples to minimize the possibility of cross contamination. I SAMPLE PRESERVATION After the liner is packed full with soil, the ends of the liner will be sealed with aluminum foil plastic caps and tape, labelled with pertinent sample information and stored in a chilled ice chest far',preservation in the field, logged on a chain-of- custody form, and transported to the,state-certified laboratory.