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04/14/2005 13:56 FAX 209 9480 Z002 <br /> .� California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair Arnold Schwarzenegger <br /> Alan C.Lloyd Ph.D. <br /> Secretaryfor Sacramento Main Office Governor <br /> Em'YronmemnlPro(eCllors interne[Address: hnp://www-swreb.oa.gov/—rwgcb5 <br /> 11020 Sun Center Drive,1200,Rancho Cordova,CA 95670-6114 <br /> Phone(916)464-3291•FAX(916)464-4780 <br /> 12 January 2005 ReCEIVED <br /> JAN 18 2005 <br /> Cary Keaten Glenn Gebhardt KLEWFELDER, INC. <br /> City of Lathrop Califia LLC <br /> 16775 Howland Road 73 W. Stewart Road <br /> Lathrop, CA 95330 Lathrop, CA 95330 <br /> CONDITIONAL APPROVAL, MONITORING WELL ABANDONMENT PROCEDURES, <br /> M0SSDALEARE,4, LATHROP,SAN JOAQUIN COUNTY <br /> I have reviewed the Monitoring Well Abandonment Procedures, Mossdale Area,prepared by <br /> Kleinfelder, Inc., dated.20 December 2004. The plan describes plans to destroy eight wells that are <br /> considered damaged beyond use. The wells were installed to investigate groundwater conditions in the <br /> Mossdale Village development and they were apparently damaged during construction activities. <br /> The wells identified for destruction are: T V-1, TMW-7, TMW-9, TMW-10, LMW-2,LMW-3, <br /> LMW-5, LMW-6,P-7, and P-8. All the wells were identified as "destroyed" in the December 2004 <br /> Report of Waste Discharge,Appendix Vol. 2,Table 1. Staff has identified an additional well that <br /> requires investigation and possibly destruction. Table 1 identifies Well LW-4 as being "Located in <br /> Discharge Pond." The status of Well LMW-4 must be investigated, and if determined to be located in a <br /> recycled water storage pond, must be located and properly destroyed. <br /> The workplan states, "To the furthest extent possible the wells will be located and the PVC well casing <br /> will be removed from the borehole." It is unclear if the wells were surveyed because well installation <br /> reports were never submitted to the Regional Board. If needed,well survey data shall be used to locate <br /> the wells. <br /> The workplan is approved on the condition that the above comments are addressed in an addendum letter <br /> to be submitted prior to well destruction activities. By 12 April 005,please submit a Well Destruction <br /> Report that describes the results of the well destruction pro If you have any questions on this <br /> conditional approval,please telephone me at(916)464-4616. <br /> ~ /ate i .W 1/.i✓" �✓�'f='l,:b'y N, �1"�'�� (" �f �� <br /> TIMOTHY <br /> 'BRIEN eat tCv`�S <br /> Waste Discharge to Land Unit <br /> cc: Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Joe Zillis,Kleinfelder,Inc., Stockton <br /> California Environmental Protection Agency <br /> 0 Rerycled Paper <br />