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California Reg f nal Water Quality CaILItrol Board <br /> Central Valley Region <br /> Steven T.Butler,Chair <br /> Winston I{. I ickox Gray Davis <br /> Secrelar 1-for Sacramento blain Office Governor <br /> Environmental Intemet Address: http:/h%%%w.swrcb.ca.gov/—nvgcb5 <br /> Protection 3413 Routicr Road,Suite A,Sacramento,Califomia 95527-3003 <br /> I'hone(910)255-3000•FAx(916)255-3015 <br /> 3 May 2000 <br /> Mr. Ken Price <br /> Gletm Springs Holdings, Inc. <br /> 2480 Fortune Dr., Suite 300 <br /> Lexington, KY 40509 <br /> SUPPLEMENTAL SOIL AND GROUNDWATER SAMPLING WORKPLAN, <br /> OCCIDENTAL CHEMICAL AGRICULTURAL PRODUCTS, INC. (OxyCheni), SAN <br /> JOAQUIN COUNTY, Case #4397 <br /> We have reviewed the Supplemental Soil and Groundwater Sampling Work Plan prepared-by <br /> The Source Group, Inc., dated 28 April 2000. We concur with the objectives in the scope of <br /> work to collect additional soil and groundwater data as described in the document, but ha-,--- <br /> comments regarding the analytical methods proposed as follows: <br /> Table 2 and Table 3,Analytical Methods for Soil and Groundwater, respectively, show that <br /> sulfolane is a pesticide and recommends using USEPA Method 8080 as an analytical method. <br /> Firstly, sulfolane is not a pesticide but a solvent used as a carrier for the pesticides EDB and <br /> DBCP. Secondly, EPA Method 8080 has been deleted from SW 846 and replaced with the <br /> updated EPA Method 8081A (see attached SW-846 Status Tables). Because sulfolane is a <br /> solvent, OxyChem should use EPA Method 8015 with a detection limit of 20 ppb (µg/1). <br /> Furthermore, OxyChem proposes using EPA Method 504.1 for soil and groundwater anal�'sis for <br /> EDB and DBCP. Again, this method is an older method. OxyChem should use EPA Method <br /> 8021B with a detection limit of 0.01 ppb (µg/1). <br /> In order for the project to go forward in a timely manner, we find the report acceptable with the <br /> condition OxyChem ensures that updated methods shall be used in the analysis of samples_ <br /> Please submit replacement pages for Table 2 and Table 3 showing these updates to confi= this <br /> condition. <br /> In addition to the SW-846 Status Tables enclosed, please be aware of information availablz- on <br /> the internet at http•//wv<�v epa Qov/epaoswer/hazwaste/test/sw846.htm. <br /> California Environmental Protection Agency <br /> r"Recycled Paper <br /> '�o <br />