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T. - <br /> y Manteca Unified School District �+ <br /> Subsurface Soil&Groundwater Investigation <br /> Soil samples will be collected at five foot intervals for geological interpretation and <br /> laboratory analysis (2 laboratory soil samples per boring). All soil samples will be <br /> delivered, under chain of custody, to an analytical laboratory licensed by the State <br /> of California for hazardous materials work. The samples shall be analyzed for Total <br /> Petroleum Hydrocarbons (diesel) by 3550 Luft. BTX&E (Benzene, Toluene, <br /> Xylene, and Ethyl Benzene) by method 8020. The minimum detection limits used <br /> for each analyte will be .005 mg/kg for BTX&E and 1.0 mg/Kg for diesel. <br /> Analyses are to be conducted by GeoAnalytical Laboratories, Inc., in Modesto, <br /> California. <br /> All rinse water will be removed by the driller, V&W Drilling, Inc. Drill cuttings <br /> are not produced by this method. <br /> 2.3 Groundwater Sampling <br /> A travel blank, provided by the laboratory, will accompany the sample vials from <br /> the time they are picked up from the lab to the time they are delivered to the lab. <br /> This travel blank will be listed on the Chain of Custody, but will be analyzed only if <br /> all samples contained the same contaminants. <br /> All sampling equipment, including the stainless steel Geoprobe® screen point, used <br /> by sampling personnel, will be disassembled and steam cleaned prior to <br /> commencement of sampling. These procedures will also be followed between each <br /> boring. <br /> The groundwater samples will be analyzed or extracted within 14 days according to <br /> their EPA methods. The samples shall be analyzed for Total Petroleum <br /> Hydrocarbons (diesel) and BTX&E (Benzene, Toluene, Xylene, and Ethyl <br /> Benzene). The minimum detection limits used for each analyte will be .0005 mg/1 <br /> for BTX&E and 0.05 mg/1 for diesel. Analysis will be conducted by GeoAnalytical <br /> Laboratories, Inc. in Modesto, California. <br /> Prepared By: p,ED 66,9 <br /> �g G�RTIF/F� 00 <br /> Lu ROBERT FOURT <br /> No.-1 0 e <br /> Exp � <br /> Robert Fourt, CHG NgJ��0 GErn% <br /> Certified Hydrogeologist #180 FOF�gL�FO <br /> Ape� <br /> Michael J. Kloberdanz, , REHS �4� �,S•%L <br /> California Registered Environmental Assessor#02157 �� <br /> California Registered Environmental Health Specialist #4783 � <br /> No.02157 <br /> Expites: <br /> 5 <br />