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Sow <br /> Date May 13.2011 <br /> PALJSADES GAS AND WARN STATION NO.U5 <br /> SEME+�AI�MrNlAL GROUNDWATER MONITORING REPORT <br /> Fad*No: An Address: 2705 Country Club Boulevard,Stockton,CailifbmW <br /> Palisades Gas Project Supervisor: Charlos Miller <br /> Corsa A ft Co./Contac t Person: Stratus Environmental, Inc./Soott Bittinger, P.G. <br /> Consultant Project No. 2007-0835.01 <br /> Primary Agency/Regulatory ID No: Mkt J. Irrfume, Jr., San Joaquin County Environmental Health <br /> _ Department(SJCEHD1l Site No. 1072, RO No 1504 <br /> WORK PERFOIED THIS PERIOD(First and Eaft 8e00nd Quarter 2011): <br /> 1. At the request of SJCEND, Stratus collected depth to groundwater msasununents and groundwster <br /> samples from ssieot wells situated within dte uppermost water bearing Interval at the site. Stratus <br /> mm*Onad W wndW*tsr elevations in wells MW-1 t Mjgh MW-11, MW-14 through MW-17, MW-20, <br /> VEW-1, and VEW-3 on April 5, 2011. Samples were ooliecosd from wells MW-1, MW-3, MW-4, <br /> MWA MW-11,MW-15 through MW-17, MW-20,VEW-1 and VEW-3. <br /> 2. Select groundwater semplas were analyzed at a obdo oertNfed analytical laboratory for gasoline <br /> range organics(GRO) by EPA Method SWW1561DHS LUFT Manual, and for meft tertiary butyl <br /> ether(MTBE)and tertiary butyl ether(TBA)by EPA Method SW8260B. <br /> WORK PROP08E0 FOR NEXT 8EMWWNUAL PlIRIOD(Left Second,Third,and Fourth Qwrfs► <br /> 20111): <br /> 1. Stratw/fti M will oondnue to work In conjunction with SJCEND personnel In order to complete the <br /> necessary activities needed to manage the environmental cake at the site towonxis closure. <br /> Current Phis of Project 0194n51vwter 1AonM MNW/Cies Closure ConsiderNion <br /> Frequency of Groundwater Ssmpift: Select shallow swooned wells sampled semis n usily; <br /> ssmpMrp of ncxWAW@&Ad shallow screened wells ad <br /> deslaN <br /> swooned walls tentrtively discontinued <br /> Frequancy of Groundwater Mon WrV: Swftk vw*(**Now screened wells);monitoring of <br /> dsela-scM!aW_web tertolively dscontinusd <br /> Groundweter Somping Date: Apel 5,2011 <br /> Is Free Product(FP)Presort on Site: No <br /> Approz DOM to Groundwater(Upper): 4.72 to 7.64 fed below to of weN asinp <br /> Approx Depth to Groundwater(Lower): Not nw sured drrtrrn 111 <br /> GroundwW r Flow Direction(Upper): predominately <br /> GrounEMistet Gradient(Upper): 0.003 tuft <br /> Groundwater Flow Direction(Lower): Not evaluated <br /> Groundwater Gradient(Lower): Not evaluated <br /> K\USA Ciawii"335 QwFkrWMI ISA_833 2Q11.DM $fMTUS <br />