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STATE OF CALIFORNIA-Environmental Protec agency PETE WILSON,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD 6065- ;As,�,,, <br /> CENTRAL VALLEY REGION 344'Routier Road, Suite A <br /> Sacramento,CA 95827-3098 <br /> PHONE: (916)255.3000 <br /> FAX (916)255.3015 r <br /> 11 January 1993 EfVVI <br /> Mr. Jeff Grussing Mr. Nick Nickerson <br /> PureGro Unocal Corporation <br /> 1276 Halyard Drive 2000 Crow Canyon Place, Suite 450 <br /> West Sacramento, CA 95691 San Ramon, CA 94583 <br /> PUREGRO STOCKTON FEE© FACILITY (CURRENTLY 'OWNED BY PN AG PRODUCTS) <br /> Thank you for submitting the workplan entitled "Soil Sampling Plan - PM Ag <br /> Products" for your former facility on .Washington Street in the Port of <br /> Stockton. I have reviewed the workplan, and have a few comments. <br /> As we discussed last week, the workplan is not very detailed as far as where <br /> the laboratory samples will be collected, and at what depth they will be <br /> collected from. I understand your desire to be able to make decisions in the <br /> field, based on the results of the Hach tests and nitrate test strips. This <br /> is fine, as long as you keep in mind that the purpose of the investigation is <br /> to determine the lateral and vertical extent of nitrogen contamination <br /> (expressed as both TKN and NO3) . <br /> We also discussed my concern about whether samples would be collected from the <br /> west side of the tank farm, and you assured me that this area would also be <br /> addressed. <br /> With the above comments, the workplan is approved. Please begin the <br /> investigation as soon as your consultant's work schedule and the weather <br /> allows. Also, please let me know when you plan to begin the field work, in <br /> case I wish to schedule an inspection at that time. <br /> If you have any questions, I can be reached at (916) 255-3104. <br /> WE WYE S <br /> 1 <br /> Ag Regulatory Unit <br /> cc: Mr. Michael Infurna, San Joaquin County Health Department, Stockton <br /> Mr. Bill Withrow, PM Ag Products, Illinois <br /> Mr. John Rapp, Sierra-Pacific Consultants, E1 Dorado Hills <br />