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a.. ' §eolo icaf?echnics inc. � � �.� Page 2 <br /> Soil Boring and Monitoring Well Installation Work Plan <br /> Artie Ice(D St.) <br /> Project No. 691.2 <br /> November 20, 1998 <br /> 2.1 Soil Sampling Procedure <br /> A drill permit will be secured as necessary and the subsurface will be cleared of underground <br /> utilities by notifying Underground Service Alert. <br /> V&W Drilling of Rio Vista, license no. (C57 # 720904), using a hollow stem auger drill rig <br /> will drill the boreholes. <br /> +— Soil samples will be collected for geological and analytical evaluation at five-foot intervals. <br /> A boring log providing sediment description using the USCS and field observations will be <br /> maintained by a professional geologist working under the supervision of a registered <br /> L,, geologist. Soil samples will be collected in 6.0-inch brass liners using a 2.0 inch modified <br /> California split spoon sampler. All soil samples will be sealed with Teflon, capped with <br /> plastic end caps, labeled and placed in a cooler at 4° Celsius for transport to the laboratory <br /> following Chain of Custody protocol. <br /> Because every soil sample collected will not be submitted for laboratory analysis, a screening <br /> process will be used to gather additional information. The field observation will note the <br /> La following: <br /> • sediment type, especially grain size and clay content <br /> • moisture content <br /> ,r • visible evidence of contamination, i.e., color change due to reduction of iron or <br /> discoloration from hydrocarbons and other pollutants <br /> • readings above background on a organic vapor meter(OVM) <br /> 'r The OVM is a portable photo ionization detector that uses a 10.0 eV lamp to detect <br /> compounds with ionization potential below 10.0 eV (hydrocarbon range). <br /> �., 2.1.2 Soil Laboratory Analyses <br /> Based on field screening observations up to four soil samples from each borehole will be <br /> submitted to Sherwood Laboratories of Hilmar (State Certified Laboratory 41400). Samples <br /> will be tested of diesel range petroleum hydrocarbons (Total Extractable Petroleum <br /> Hydrocarbons (TEPH) - Diesel) by EPA method 3540/8015m. The detection limits for these <br /> compounds are listed below. A Chain of Custody will be completed for all samples collected <br /> �- and tracked to ensure sample integrity. <br /> zmits:[:n0eyiCon <br /> g <br /> 3.0 SCHEDULE & REPORTING <br /> Geological Technics Inc. has tentatively scheduled this drilling work for Dec 1, 1998. This <br /> schedule may have to be modified depending on the inspector's schedule. <br /> The information gathered during this phase of work will be presented in a report, which will <br /> include a summary of the geology as well as the results of sample analyses. Dr. Ray <br /> Kablanow, a registered professional geologist, will supervise the project. Copies of the <br /> V <br /> LO <br />