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kq KLEINFELDER TASK 4.0 FINAL PHASE I REPORT OF FINDINGS 4.1 Provide a final report of findings. The report of findings will include an evaluation of the information obtained from the Phase I ESA. The report will include illustrations, color photographs, and pertinent regulatory agency documentation regarding the site. The report will discuss findings and recommendations. LIMITED PHASE II ASSESSMENT TASK 1.0 BORING PERMIT AND PRE-MOBILIZATION PREPARATION Kleinfelder will submit a boring/well permit to the San Joaquin County Environmental Health Department (EHD). The permit(s) will be forwarded to EHD at least 48 hours prior to conducting fieldwork. Please note that EHD may bill The DeSilva Group directly for oversight time on the project. The proposed boring location areas will be marked in white paint and Underground Services Alert will be notified at least 48 hours prior to boring activities. TASK 2.0 SOIL AND GROUNDWATER SAMPLING, DAIRY WASTE POND AND CORRALS Kleinfelder proposes to collect soil and groundwater samples from eight (8) push probe borings throughout the property using a Geoprobe 5410 sampling rig. The purpose of the sampling is to assess potential dairy operation impacts to subsurface soil and groundwater at the subject site. Based on a recent Geotechnical Investigation conducted by Kleinfelder approximately 300 feet west of the Crom Property, depth to groundwater is estimated at approximately 16 to 18 feet below ground surface (bgs). Groundwater depth may be variable. The borings will be advanced, logged, and sampled following the protocol described in Attachment B. Eight (8) soil borings B-1 through B-8 will be advanced to a total depth of approximately 20 feet and will be advanced in the cattle pen areas and dairy ponds (dry). Soil samples will be collected at the surface and at 4-foot intervals to first encountered groundwater. One grab groundwater sample will be collected from each of the eight borings. Pushprobes will be advanced using a pneumatically driven steel probe. Soil samples will be obtained by inserting a sample barrel, lined with acetate liners, into the probe. The sample barrel will be lowered to the desired sampling depth and driven into the soil. The sample tubes will be removed and sealed with Teflon and plastic fitting end caps. Soil samples will be collected continuously during the advancement of the pushprobes to the proposed maximum depths of 20 feet bgs. During the advancement of the borings, soil samples will be collected for lithologic classification based on the Unified Soil Classification System (USCS). At this time, we propose to collect a total of 24 soil samples, three from each soil probe location. The soil samples will be collected at approximately depths ranging from surface to 15 feet bgs 02001 PROP.ENV/ST04P222/DGD:ss Page 5 of 10 Copyright 2004,Kleinfelder,Inc. May 26,2004