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California Regional Water Quality Control Board ; Central Valley Region Robert Schneider,Chair Gray Davis Winston H.Hickox < Governor Secretaryfor Sacramento Main Office / Environmental Internet Address: http://www.swrcb.ca.gov/—mgcb5 / Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 A . Phone(916)255-3000•FAX(916)255-3015 9 July�Q 2 �s Mr. Benjamin Hall Mr. Nick Musco Musco Family Olive Company Studley Corporation 17950 Via Nicolo 17950 Via Nicolo Tracy, CA 95376 Tracy, CA 95376 INCOMPLETE REPORT, EVALUATION OF GROUNDWATER MONITORING WELL MW-9, MUSCO OLIVE PRODUCTS, TRACY, SAN JOA QUIN COUNTY I have reviewed the 2 July 2002 report titled, "Groundwater Monitoring Well MW-9,"prepared by Kleinfelder, Inc. for Musco Family Olive Company. The report was submitted to the Regional Board on 8 July 2002 in response to Requirement No. 14 of the revised California Water Code Section 13308 Time Schedule Order No. R5-2002-0014-ROI, which required evaluation of Well MW-9 to determine if the well could be used consistently as a groundwater monitoring point. I have the following comments on the report: • The report failed to describe the present condition of the well. There was no discussion of a depth to groundwater measurement as part of the evaluation. Well MW-9 reportedly dewatered during the well development and had not recovered by the time the well was sampled on 5 April 2002. Field measurements should have been made to determine whether the well eventually recovered or not. • It is understood that groundwater elevations fluctuate over time,however, the well was installed recently and the report does not evaluate the potential groundwater elevation fluctuation in other site wells. • Use of the other site monitoring wells described in the report as surrogate monitoring wells is not acceptable because they are too far away. As submitted, the report is incomplete, and therefore I conclude the well cannot be used consistently as a groundwater monitoring point. Musco Olive Products shall submit a workplan and schedule for installation of a replacement well by 9 August 2002. The workplan shall be consistent with the attached guidance document. If you have any questions about the comments provided,please telephone me at (916) 255-3116. TIMOT R. O'BRIEN Waste Discharge to Land Unit Lower San Joaquin River Watershed cc/enc: see attached list California Environmental Protection Agency 0a Recycled Paper The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://w .swrcb.ca.gov/mgcb5