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� 1 <br /> California Aegional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair r <br /> Alan C.Lloyd Ph.D. � Arnold Schwazenegger <br /> Agency Secretary Sacramento Main Office Governor <br /> Internet Address: http://w .swrcb.mgov/—mgcb5 'n <br /> 11020 Sun Center Drive,#200,Rancho Cordova,C,0067ftftived......13..J1. .,. �.0 1^n � <br /> `^' <br /> Phone(916)464.3291 •FAX(916)464'?KL.T. L.Approved......................................... <br /> J.S.Approved............................................ <br /> 15 June 2005 RSCEpVED Routed to: ........................Date................. <br /> John Scherer JUL — 6 2005 <br /> TCN Properties, L.P. EN""ONMENT HEALTH <br /> 1481 Manila Road QERMITISEHW,ES <br /> P.O. Box 317 <br /> Lathrop, CA 95330 <br /> CONDITIONAL APPROVAL, WORKPLANFOR GROUNDWATER STUDY,NORTHLATHROP <br /> PROPERTIES,LATHROP,SAN JOA QUINCOUNTY <br /> I have reviewed the Workplan for Groundwater Study,prepared by ENGEO, dated 20 May 2005. The <br /> plan was prepared as part of an investigation to characterize groundwater quality for possible wastewater <br /> application areas. The Workplan seeks comment on the investigation but because the land application <br /> areas are not clearly identified, staff cannot comment on the adequacy of the investigation at this time. <br /> We understand the proposed investigation will be supplemented with additional investigations in the <br /> future. <br /> Figure 2 of the Workplan identifies the five wells proposed for installation. There are an additional six <br /> wells also shown on Figure 2. Recently, the existence of groundwater monitoring wells installed without <br /> permits from the San Joaquin County Environmental Health Department has been discovered. Therefore <br /> I would like a summary of the permit status of the existing groundwater monitoring wells shown on the <br /> Figure. If boring logs and/or well construction details are available,please submit that information with L <br /> the well installation report. <br /> Upon receipt of information on the existing groundwater monitoring wells' permit status,I will provide <br /> approval of the groundwater investigation techniques described in the Workplan. The workplan is <br /> approved on the condition that the above comments are addressed in an addendum letter to be submitted <br /> prior to installation of the wells. If you have any questions on this conditional approval,please <br /> telephone me at(916) 464-4616. <br /> TIMOTHY . O'BRI� <br /> Waste Discharge to Land Unit <br /> cc: Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Dennis Nakamoto,ENGEO Inc., San Ramon <br /> California Environmental Protection Agency <br /> aZ Recycled Paper <br /> W\4.y1�pbienT$N kapWOW[IU,naDMS[tlnv IS lure US.tloc <br />