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HYDRO-SEARCH . INC . TEL : 1-916-8b6-18bU Sep 1'J- 'JD 10 •vo MU . il. r .U� <br /> July 24, 1995 <br /> califonia water Quality control Board <br /> Central valley Region <br /> 3443 Routler Road, Suite A <br /> Sacramento, Callfbrnia 95827-3448 <br /> Atln: Mr. Patrick Morris <br /> WRC Pxtglneer <br /> Subject: Second Quern Ground Water SwWing Report and Rtypor re to Regional Water <br /> CWuty tlunttnl B+Wd - Cgnttret Valley Region Canunents to Leprino Foods <br /> Rwrt &d Actlon Plop. San Joaquin Cowrty (Coen No. 3327). <br /> Dear Mr. Morris: <br /> We have received your comments >reprding the Remedial Action Plan (RAP) for the Tracy, <br /> California site in your lets dated July 14, 1995- 716 Ragland Water Quality Control Board - <br /> Central Vatiey Region (CV-RWQCB) stated the the RAP is acceptable provided certain <br /> comnneants am responded to. These comments, along with our responses, are provkled below. <br /> In addition, the report summarizini; the results of the June 28, 1945 gmund water sampling <br /> event is also enclosed for your review. <br /> CV-RWQCB Coorsrxmtt The RAY irrdleates up to ter recovery Mega will be installed at <br /> the downgradlent edge of the fi+ WFVdoct ph=. The plan <br /> htdksttes bdtWLv three wells wW be b utallsd and tested shot <br /> two before three additional wells , if nooessaey, are bu alled. <br /> Which three recovery webs arra being selected tar tate abort <br /> tors test? <br /> Leprine Response: The three wells which will be initially installed and tested included <br /> RW-1, RW-3, and RW-5 (See Figure 5-1 in the RAP). <br /> CV-1!tWQCB Comments What Is the anticipated radins of lnflnence of the extraction <br /> Wella? <br /> Uprino Response: An 8-hour pumping tent was caeducted ren EW-1 in May 1993. <br /> Rased on pre-testing of the well, the pumping tate for the test was <br /> determined to be 3 gallons per minute (gpm). At this pumping <br /> rate , drawdown was observed in MW-d, located 118 fed. from <br /> EW-1. It should be noted; however, OW BW-1 was an extremely <br /> ineJlident well (8.696). We believe that properly Installed <br /> extraction wells will be more efficient, provide greater pumping <br /> rates, and provide gtrater areata of inilwAm during operation. <br /> Start-term teats will be conducted on RW-1, RW-3 and RW-5 to <br /> verify this assumption. <br />