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a <br /> California Regional Water Quality Control Board <br /> 1 <br /> Central Valley Region u <br /> Linda S.Adams Karl E. Longley,ScD, P.E., Chair Arnold <br /> Secrnarylor <br /> Environmental Protection $chwger <br /> Sacramento Main Office Governorovemor <br /> 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 <br /> Phone(916)464-3291 •FAX(916)4644645 <br /> http://www.waterbouds.ca.gov/centralvalley <br /> 26 September 2007 <br /> Ben Hall, Director <br /> Environmental Services and Programs <br /> Musco Family Olive Company <br /> 17950 Via Nicolo <br /> Tracy, CA 95377-9767 <br /> CONDITIONAL APPROVAL, MILLION-GALLON POND SOIL CHARACTERIZATION <br /> WORKPLAN, MUSCO FAMILY OLIVE COMPANY, SAN JOAQUIN COUNTY, WASTE <br /> DISCHARGE REQUIREMENTS ORDER NO. R5-2002-0148 <br /> We have reviewed your Work Plan for Soil Characterization — One Million-Gallon Pond <br /> (Work Plan), dated 2 July 2007. The Work Plan proposed a soil sampling and analysis plan to <br /> characterize soil underlying the recently-emptied million-gallon pond. The million-gallon pond, <br /> which historically stored olive processing wastewater, was recently replaced with a <br /> 200,000-gallon, covered, above-ground surge tank. <br /> The Work Plan is acceptable, provided the following changes are made: <br /> 1. Add bicarbonate to list of parameters to be analyzed; <br /> 2. Use de-ionized waste extraction test (DI WET) method as described in §66700 of Title 22 <br /> of the California Code of Regulations for preparation of soil samples for analysis; <br /> 3. Remove obvious olive processing waste solids from the bottom of the million-gallon pond <br /> prior to commencement of soil sampling; and <br /> 4. Propose additional sampling depths below the bottom-most proposed depth of 6' if there is <br /> visual and/or analytical evidence that soil below this depth has been impacted. <br /> If you have any questions regarding this letter, please contact Melissa Hall at (916) 464-4757. <br /> STEVE E. ROSENBAUM <br /> Senior Engineering Geologist <br /> Land Disposal Unit <br /> Lower Sacramento River Watershed <br /> cc list next page <br /> California Environmental Protection Agency <br /> Qd Recycled Paper <br />