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Reporting Limit <br /> Analyte /ma <br /> 2.2 <br /> TPH-G 0.020 <br /> Benzene 1.0 <br /> Toluene 0.20 <br /> Eth 1 benzene 2.0 <br /> X lenes 1.0 <br /> Meth 1 tert-bu 1 ether MTBE 2 0 <br /> Tert-bu 1 alcohol TBA 1.0 <br /> Di—iso to 1 ether IPE 1 0 <br /> Eth 1 tert-bu 1 ether TBE 1.0 <br /> Tert-am 1 meth I ether TAME <br /> 2,$ SOIL SAMPLING AND ANALYSIS <br /> Winzler&Kelly proposes to collect soil samples from the in wells at n impoot intervals. Soil <br /> samples may also be retained at changes in lithology, zones of obvious hydrocarbon impact, and from <br /> the vadose zone. Soil sampling and handling will be completed in accordance with the Winzler& <br /> Kelly's SOP for Soil and Water Sampling from a Boring with VOCs(Appendix A). <br /> A maximum of two (2)soil samples for chemical analyses will be retained from each of the three(3) <br /> monitoring wells.The soil samples will be submitted to Analytical Sciences Laboratory,Petaluma <br /> California,(a State-certified laboratory)under proper chain-of-custody procedure for the following <br /> analysis: <br /> • TPH-G by EPA Test Method 8015M/8260B; MTBE, <br /> • BTEX, 1,2-dihloroethane(1,2-DCA),ethylene dibromide (EDB), and 5-oxygenates: <br /> TAME,TBA,DIPS,and ETBE by EPA Test Method 826013; <br /> • TPH-D with silica gel cleanup by EPA Test Method 8015M; <br /> Total recoverable hydrocarbons(TRPH)by SM 5520F/Silica Gel;and <br /> • Total lead by EPA Test Method 6010. <br /> 2.6 MONITORING WELL DEVELOPMENT <br /> The new groundwater monitoring wells will be developed in accordance with Winzler&Kelly's <br /> SOP for Soil Boring and Monitoring Well Installation and Development(Appendix A). Well <br /> development occurs to remove fine-grained sediment from the well casing and filter pack.The well <br /> will be alternately surged and bailed,and then pumped with a 1.5-inch electric pump,until extracted <br /> water becomes mostly clear or a minimum of 10 well volumes have been purged.The total volume of <br /> water removed during well development will be recorded on the field forms,along with the field <br /> parameters of dissolved oxygen,pH,temperature,and conductivity. <br /> 2.7 GROUNDWATER MONITORING WELL SURVEY <br /> The top of casing elevation for each of the proposed monitoring wells will be surveyed by a <br /> licensed land surveyor to within 0.01-foot vertical elevation relative to mean sea level, and will be <br /> referenced to a permanent datum. The well casing elevations, and new well horizontal locations will <br /> be surveyed in accordance with State requirements for electronic data submittal, and survey data <br /> will be submitted to the State GeoTracker database once the stamped surveyors report is received. <br /> 4 W INZLER&KELLY <br /> 03009-10017-37020 August 2011 <br />