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California RegiSnal Water Quality CotIs rol Board <br /> Central Valley Region <br /> Wimton H.Hicko� Steven T.Butler,Chair Gray Davis <br /> Secrerarr jar Sacramento Main ice Commor <br /> Enrimnmental Internet Address: http://www.swrcb.m.gkiv/-mgcb5 <br /> Protection 3443 Rougier Road,Suite A,Sacramento..California 95827-3003 t <br /> Phone(91 G)255-3000•FAX(97 G)255-3015 <br /> 11 May 2000 MAY 12 ZOOO ` <br /> ENVIR0i,4mr,4i,_ -,,LTH <br /> PERMIT/SERVICES <br /> Mr. Jon Weiss <br /> Libbey-Owens-Ford Co. <br /> P. O. Box 128 <br /> Lathrop, CA 95330 <br /> PRODUCT RECOVERY SYSTEM FOR THE DIESEL LINE SPILL, LIBBEY-OWENS-FORD <br /> COMPANY, SAN JOAQUIN COUNTY <br /> I have reviewed the 13 October 1999 quarterly groundwat--r monitoring report for the standby generator <br /> diesel supply line product recovery system and monitoring wells for the Libbey-Owens-Ford(LOF) <br /> facility in Lathrop. The report provides results of field observations and/or testing of groundwater <br /> monitoring and diesel product recovery wells. The report also recommends cessation of product recovery <br /> due to the absence of recoverable product, continued quarterly groundwater monitoring of monitoring <br /> wells (MWs) 1-3 and basement sumps 1 and 2, and quarterly monitoring for intrinsic bioremediation <br /> parameters at MW 3 and recovery well (RW) 1. 1 apologize for the delay in my review. My comments on <br /> the report are presented below. <br /> 1. MWs 1 and 3 are upgradient and MW 2 is cross gradient of the spill area,Therefore, downgradient <br /> wells are needed unless RWs 1, 2, and 6 are used as NM s. <br /> 2. The report states that the cost of$1,300 to remove a gallon of diesel is not cost effective. The report <br /> should compare this cost with other removal methods_ such as groundwater extraction and treatment. <br /> 3. 1 concur with the proposal to sample the basement sumps. A map with convenient scale should show <br /> the locations of the sumps in relation to the spill area,MWs, and RWs. <br /> 4. The report proposes to monitor MW 3 and RW 1 for natural attenuation (NA) parameters. In <br /> addition to these wells, the NA monitoring program also should include MW 2, RW 2, and RW 6 <br /> because they are boundary wells. <br /> 5. LOF should explain the fate of both the separate phase and dissolved diesel. <br /> California Environmental Protection Agency <br /> C4 Recycled Papr- <br />