Laserfiche WebLink
1 ka.�a aann <br /> IIEAI.Ih d 916.02e.aioo rargurtz <br /> VICE ,. rd <br /> 9M,928asu <br /> the '.I 12: 52 <br /> / OlIP r o meo m <br /> Project 80302626 <br /> Mr. Marty Hartzell <br /> Califomia Regional Water Quality Conrol Board <br /> Central Valley Region <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3003 <br /> Re: Off-site Groundwater Monitoring Well Insulation Workpiwo <br /> Framer Vintage Car Wash <br /> 601 East Miner Avenue <br /> Stedman, California <br /> Dear Mr. Harrell: <br /> On behalfafthe California Department of General Services, Real Estate Services Division <br /> (DOS-RESD), IT Corporation (n) has papared this workplau fro the installation Of six <br /> groundwatermonitodu wdlsatthefnner Vintage Car Washin Sto oRCalif ia. Ton <br /> work was requested by the Califmmia Regional Water Quality Control Bound (RWQCB) in <br /> then letter dated lure z], 2001. <br /> The objective of this investigation is to define the bound and vertical Word Ofdiswlvd <br /> pdmleum hydrocarbons and methyl-tertiary butyl ether (MTBE) in groundwater between <br /> monitoring wells MW-3 and MW-5, and cross gradient of the site (Figure 1). <br /> SCOPE OF WORK <br /> IT conducted an investigation using cone penehomder testing (CPT) equipment m define tire <br /> site stiafigraphy downgradient and cross-gradient of the site, and to identify higher <br /> permeability zones that may be pmfrrential pathways fro contaminate migratiay. Discrete <br /> groundwater samples were collected, from tbese hipper permeability zones, using a <br /> HydruPuncbo groundwater sampler, for analyfi"I testing Results of the CPT investigation <br /> vicludd in lT's Of ite Groundunrerinvesrigation Regin dated Apri116, 2Wl. Based <br /> on the data collected during the CPT and HydroPuneh investigation IT recommended <br /> installation of intermediate and deep interval well pairs in the vicinity of CPT-I, CPT-2 and <br /> CPT-3 forverificalion monimringoftbese intervals. Intermediate and deep interval <br /> onitoringwells with relatively short screens placed across the HydroPunch sample intervals <br /> willbeused m evaluatepotenfial mig,ation oftM ddeeld wntamirunts laterelly and <br /> vertically. <br /> aa <br /> 10 ` ol �eommonwiw ..��Nimmw�eao�ozfxomi. <br /> Namo <br />