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FIELD PROCEDURES SOIL SAMPLING AT TANK REMOVALS Site Safety Plan The Site Safety Plan describes the basic safety requirements for field activities at the site. The Site Safety Plan is applicable to personnel of Ground Zero Analysis, Inc. (Ground Zero) and to subcontractors of Ground Zero. Personnel scheduled to work at the site will be briefed on the contents of the Site Safety Plan before work begins. A copy of the Site Safety Plan will be kept at the work site and will be available for reference by appropriate parties during work at the site. The onsite representative of Ground Zero will be designated the Site Safety Officer. Sample Collection during Tank Removal Soil samples will be collected as soon as possible after removal of the tank. Where feasible, all preparations for soil sampling will be made prior to tank removal. Soil samples collected from a backhoe bucket or directly from the excavation floor will be collected in a thin-walled stainless steel or brass cylinder at least three inches long by one inch in diameter. From 3 to 24 inches of soil will be removed from the immediate surface area where the sample is to be taken and the cylinder then pounded into the soil with a wooden mallet, bulk density driver, or other decontaminated driving device. No head space will be present in the cylinder once the sample is collected. Care will be taken to avoid contamination of both the inside and outside of tfte cylinder as well as its contents. During sampling, latex gloves will be worn to prevent cross contamination with other samples. One pair of disposable gloves will be dedicated to each sample collected. Sampling from Soil Piles or Shallow Soil Pits Soil samples will be collected and transported from excavated material in the manner described in the previous section, however, a backhoe will not be utilized. If composite samples are collected, four brass cylinders will be collected for every 50 cubic yards of material to be sampled unless otherwise specified by the lead regulatory agency. The samples will be composited by the state certified analytical laboratory personnel prior to testing. Sample Labeling and Handling Soil samples selected for laboratory analysis are removed from the sampler and quickly sealed in their brass sleeves with Teflon sheets and plastic caps. The respective sample containers are labeled in the field with the job number, sample location, depth if applicable, and date, and promptly placed in iced storage for transport to the laboratory. Chain of Custody Records are initiated in the field by the geologist and accompany the samples to a laboratory certified by the State of California to perform the analyses requested. groundu\gagc\fl dtank.doc Page 1 of 2 B-1