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oaQuly o <br />•.oma <br />THOMAS M. GAU <br />DIRECTOR <br />�9�fFOR��P <br />FRITZ BUCHMAN <br />DEPUTY DIRECTOR <br />MICHAEL SELLING <br />DEPUTY DIRECTOR <br />JIM STONE <br />DEPUTY DIRECTOR <br />ROGERJANES <br />BUSINESS ADMINISTRATOR <br />=411? L�� <br />P. O. SOX 1810 - 1810 E. HAZELTON AVENUE <br />STOCKTON, CALIFORNIA 95201 <br />(209) 468-3000 FAX (209) 468-2999 <br />www.sjgov.org/pubworks <br />May 14, 2013 , <br />\�-r"-N <br />\`J <br />Mr. Todd Del Frate t- <br />California Regional Water Quality Control Board <br />Central Valley Region <br />11020 Sun Center Drive, ##200 <br />Rancho Cordova, California 95670 <br />SUBJECT: INSTALLATION OF REPLACEMENT GROUNDWATER MONITORING WELLS <br />NORTH COUNTY, HARNEY LANE, AND FOOTHILL SANITARY LANDFILLS <br />Dear Mr. Del Frate` <br />0 <br />As you are aware from the periodic Groundwater Monitoring Reports, the elevation of groundwater <br />at North County, Harney Lane, and Foothill Sanitary Landfills has been gradually declining these <br />past years such that collecting a sample from several monitoring wells has become difficult. In order <br />to continue to monitor the groundwater quality satisfactorily, we intend to install replacement wells <br />located very near the existing wells in question (Figures attached). The existing wells will be <br />retained and protected, but will no longer be monitored for now. <br />San Joaquin County Environmental Health Department has issued a permit for these wells. We plan <br />to install them in mid-June of this year under the supervision of CB&I (previously Shaw). <br />If you have any questions, please call Joyesh Chandra at (209) 468-3066. <br />Sincerely, <br />112 <br />W. MICHAEL CARROLL, PE <br />Senior Civil Engineer <br />WMC:kb <br />N:\Miscellaneous\Groundwater- All Sites\GW Wells 2013\TDelFrate01-NewWeIIS2.doc <br />Attachment <br />c: Robert McClellon, Environmental Health Department <br />LA 63107 <br />LA 11103C <br />LA 31109A <br />