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Stockton Service Station February 29, 1988 <br /> Quote No. 661OG Page <br /> i <br /> Exceltech proposes to <br /> determine the surface elevations of the well casings. <br /> survey the monitoring wells and add the results to the existing plot plan. The <br /> �-- survey will be conducted using modern surveying equipment and methods so that <br /> _ ined and the plots will be of sufficient scale to <br /> adequate accuracy can be mainta <br /> portray the, data in a useful manner. <br /> Task 2.7 r <br /> The laboratory analysis of the collected samples will be conducted fallowing <br /> T RWQCB guidelines. <br /> If required by the SJLHD, three (3) selected soil samples (compcsited from <br /> once of total volatile <br /> borehole samples) will be analyzed for the pres oto! xylenes (BTX) us ng modified <br /> 'k hydrocarbons (TVH), benzene, toluene, and t Y <br /> BPA Methods 8015 and 8020, and total lead. <br /> Three (3) ground;water samples will be tested for totel volatile hydrocarbons <br /> (TVH), benzene, toluene and total xylenes (BTX) using modified EPA Method 602, <br /> `✓` and total lead. <br /> The samples will be tested on a norma! 15 day laboratory turnaround unless <br /> r� rush charges are requested (rush charge is 3 times the normal rate). <br /> Task 2.8 <br /> Exceltec � -hall prepare a brief Site Investigation Report summarizing the field <br /> ~ and laboratory methods used, the data obtained, conclusions, and <br /> recommendations based on our. findings. The report will contain boring logs for <br /> each exploration boring drilled, logs and construction details of each monitoring <br /> led, results of all laboratory testing, <br /> well instalsite maps showing features <br /> relevant to <br /> the investigation, maps showing ground water contamination and <br /> -sections illustrating the subsurface geology. <br /> groundwater flaw, and cross <br /> F� <br />