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California Reional Water Quality Wntrol Board <br /> Central Valley Region W <br /> Winston H.Hickor. Steven T.Butler,Acting Chair Gray Davis <br /> Secreta or - <br /> Enwronmental Sacramento Main Office Governor <br /> Protection Intemel Address: http://w .sw b.ca.gov/- gcb5 <br /> 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 9 March 1999 <br /> Mr. Jon Weiss <br /> Libbey-Owens-Ford Co. <br /> P. O. Box 128 <br /> Lathrop, CA 95330 <br /> REVISED WORK PLAN ADDENDUM FOR THE DIESEL LINE SPILL, LIBBEY-OWENS- <br /> FORD COMPANY, SAN JOAQUIN COUNTY <br /> I have reviewed the 23 February 1999 revised addendum to the 23 June 1997 Work Plan for the Standby <br /> Generator Diesel Supply Line Product Recovery System Installation and Monitoring Well Installation <br /> for the Libbey-Owens-Ford (LOF) in Lathrop. This letter addresses the portion of the addendum on <br /> monitoring well installation. I will address the product recovery system in a separate letter. The <br /> addendum proposes to install another monitoring well in addition to the three monitoring wells proposed <br /> in the original work plan. <br /> The monitoring well installation aspect of the work plan is hereby approved provided that soil and <br /> groundwater samples are analyzed for polynuclear aromatic hydrocarbons using US EPA Method 8270 <br /> SHVIM. By 14 June 1999, I request that you submit a well installation report. Please let me know at <br /> least 72 hours prior to initiation of field work so that I may be present to observe or split samples. <br /> If you have any questions,you may call me at(916) 255-3081. <br /> PHIL SORENA � <br /> Associate Engineer <br /> cc: San Joaquin County Environmental Health Division, Stockton <br /> Mr. Robert Job, Condor Earth Technologies, Inc., Sonora <br /> California Environmental Protection Agency <br /> p%Recycled Paper <br />