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Site Assessment Report <br /> 1022 Frontage Road <br /> C A M B R I A Ripon, California <br /> December 16, 2005 <br /> 24-inch geotechnical sampler Samples were collected in 2-inch diameter <br /> by 6-inch long brass sample tubes that lined the inside of the split spoon <br /> sampler Samples were sealed with teflon tape and plastic end caps, <br /> labeled, stored on crushed ice at or below 4°C, and transported under <br /> chain-of-custody to McCampbell Analytical Inc , a California certified <br /> laboratory Selected soil samples were submitted for analysis Soil <br /> samples that were not submitted to the laboratory were screened with a <br /> photo-ionization detector(PID) <br /> Soil Sample Analysis Select soil samples were analyzed for TPHg, BTEX, and MTBE by <br /> modified United States Environmental Protection Agency(EPA)Method <br /> SW8021B/8015Cm,for TPHd and TPHmo by EPA Method SW8015C, �l'2� i, <br /> and for fuel oxygenates by EPA Method SW8260B The soil analytical ' Jrr, <br /> results are summarized in Table 1 Copies of the laboratory analytical 111-7106 <br /> reports are included in Appendix E <br /> Hydropunch Sampling Three depth discrete groundwater samples were collected using the <br /> • Hydropunch sampling system in soil boring B-18 The Hydropunch <br /> sampler was driven into five foot intervals of undisturbed soils in boring <br /> B-18 between 25 and 30 ft bgs, 40 and 45 ft bgs, and 55 and 60 ft bgs <br /> Three feet of screen was exposed to collect the sample at 30 ft bgs and <br /> only one foot of screen was exposed to collect the samples at 45 and 60 ft <br /> bgs Samples were collected with disposable micro-bailers and decanted <br /> into appropriate containers <br /> tr,j3 <br /> et Ok <br /> Groundwater Analysis Samples were analyzed for TPHg, B TE X, and MTBE by modified EPA <br /> Method SW8021B/8015Cm, for TPHd and TPHmo by EPA Method <br /> SW8015C,for TPHd and TPHmo,by EPA Method SW8015C with silica <br /> gel cleanup, and for oxygenates by EPA Method SW8260B The <br /> groundwater analytical results are summarized in Table 2 Copies of the <br /> laboratory analytical reports are included in Appendix E <br /> Boring Depths Well AS-1 was advanced to 33 ft bgs Well MW-10 was advanced to 35 ft <br /> bgs Boring B-18 was advanced to the total explored depth of 60 ft bgs <br /> • <br /> 7 <br />