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' CGeo' icalTechnics Inc. • • Page 3 Fonzia SGWI Report Project No.: 774.2 April 1, 1999 ' providing sediment description using the USCS and field observations, were maintained by Ray Kablanow, a registered geologist. The boring logs are included in Appendix C. 1.2 Groundwater Sample Collection Upon reaching the capillary fringe a hydropunch type sampling tool was advanced into the groundwater and a groundwater sample was collected from each borehole. The samples were collected by use of a watera type sampling tube and gently transferred into 1-liter amber glass bottles. The bottles were capped, inverted, tapped, and checked for headspace bubbles. The bottles were then labeled and placed in a cooler at 4° Celsius for transport to the laboratory following Chain of Custody protocol. Clean surgical gloves are worn at all times in handling of the sample and sampling ' equipment. The bailer was washed in an Alconox solution and rinsed with clean water between used. 1.3 Laboratory Analyses ' Soil Two to four soil samples from each borehole were submitted to Sherwood Laboratories of ' Hilmar (State Certified Laboratory #1400). They were analyzed for the following: • Total extractable petroleum hydrocarbons as diesel, kerosene, motor and dielectric oils (TEPH-D, MO, DEO) by EPA method 3540/8015 (m). The detection limits for these compounds are listed below. etection imrts: I EPH-D, T , of mg Kg ' Water One groundwater sample from each borehole was submitted to Sherwood Laboratories of ' Hilmar (State Certified Laboratory #1400). They were analyzed for: • Total extractable petroleum hydrocarbons as diesel, kerosene, motor and dielectric oils (TEPH-D, MO, DEO) by EPA method 3510/8015 (m). The detection limits for these ' compounds are listed below. DetectionLim-its: TEPH-D, MO, DEO water µg 2.0 SITE GEOLOGY ' The soils beneath the site consisted of very dark brown, slightly plastic silty clay down to the capillary fringe, 6.5 to 7 feet bgs. The soil then became lighter brown very plastic clay down ' to approximately 11 feet bgs. In several of the boreholes, sandy clay was encountered from 11 to 12 feet bgs. Groundwater was encountered in the boreholes from between 6 and 8 feet bgs. The boring logs that summarize information and observations made in the field are included in Appendix C.