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Ben Hall 2 21 October 2010 <br /> Musco Family Olive <br /> 3. The report presents groundwater ion balances but does not interpret or evaluate the <br /> results. <br /> 4. The report concludes that TDS and chloride concentrations are either decreasing or <br /> stable when compared to past year's average value. However, TDS in well MW-22 <br /> increased 9%, indicating an increase over time. Furthermore, sodium concentrations <br /> increased in both wells MW-1 OR and MW-22, by 12% and 13% respectively. The <br /> report indicates these increased concentrations are related to laboratory error but <br /> provides no explanation of the error. <br /> Future monitoring reports must include the following: <br /> • A separate transmittal letter that is signed by an authorized representative that <br /> includes the required certification statement. The transmittal letter must discuss <br /> whether violations have occurred, and if so, describe actions taken or planned <br /> for correcting those violations. <br /> • Field data sheets for all wells, whether dry or not. Dry wells must monitored in <br /> accordance with WDRs Order R5-2005-0024 and the Standard Provisions and <br /> Reporting Requirements. <br /> • An interpretation of groundwater ion balance. <br /> • An interpretation of the net year changes and whether the temporal trends are a <br /> result of a release from the surface impoundments or other source within the <br /> facility boundary. <br /> Please contact me at 916-464-4737 if you have any questions. <br /> TODD A. D L FRATE, P.G. <br /> Engineering Geologist <br /> Compliance and Enforcement <br /> cc: Donna Heran, San Joaquin County Environmental Health Department, Stockton <br /> Dennis Leikam, Musco Family Olive Company, Tracy <br /> Michael Campos, Stoel Rives, Sacramento <br /> Gary Carlton, Kennedy/Jenks, Rancho Cordova <br /> Meredith Durant, Kennedy/Jenks, San Francisco <br /> Paul Harpainter, Tracy <br />