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`� op4tu rN., c 9�/FORS MICHAEL SELLING DEPUTY DIRECTOR STEVEN WINKLER DEPUTY DIRECTOR THOMAS M. GAU INTERIM DIRECTOR ROGER JANES BUSINESS ADMINISTRATOR Woir kin g for YOU 0 P. O. BOX 1810 -1810 E. HAZELTON AVENUE STOCKTON, CALIFORNIA 95201 (209) 468-3000 FAX (209) 468-2999 www.sjgov.org/pubworks s ■ � April 20, 2011 OMRONMENTAL HEALTH PERMrr/SM%ACF Mr. Kyriakos Tsakopoulos, President AKT Development 7700 College Town Drive Sacramento, California 95826-2303 SUBJECT: PERMANENT MONITORING WELLS IN AKT-OWNED PROPERTIES; PARCELS NUMBERS 253-030-14 AND 253-030-15 NEAR THE CLOSED CORRAL HOLLOW SANITARY LANDFILL Dear Mr. Tsakopoulos: We reluctantly send this letter asking for your permission to install two (2) permanent groundwater monitoring wells, one in each of the two AKT properties adjacent to the Corral Hollow Sanitary Landfill (Figure 1). These wells are required by the Regional Water Quality Control Board staff to address a situation at our landfill. I apologize for any inconvenience this may cause, and thank you in advance for your cooperation. Presently we monitor the shallow aquifer (no more than 60 feet deep) beneath our landfill property with four groundwater monitoring wells. Sampling at two of these wells indicates the presence of small amounts (below 10 parts -per -billion) of volatile organic compounds which apparently originate in the landfill. Please be assured that no impact is seen in the deep aquifer, which is the source of drinking water. The primary regulatory agency with jurisdiction over this situation is the Regional Water Quality Control Board (RWQCB). Their staff is requiring additional investigation to further determine the extent of shallow aquifer impact. Unfortunately, we have exhausted our options for such investigations within our own property, and therefore must contact you to discuss alternatives. Further investigation is best accomplished by installing a minimum of two (2) permanent groundwater monitoring wells, one in each of the properties adjacent to the landfill, located to coordinate with the existing wells on our property. The locations are near the CalTrans right-of- way, and we propose to locate the wells as close to that right-of-way as possible to minimize potential future interference with the development on your properties. Each well will require approximately one and one-half days for installation. The finished well would occupy an area approximately six feet by six feet, including protective bollards, similar to the photograph below. Once installed, the wells would be visited quarterly by our ground water sampling contractor. Monitoring would continue indefinitely which, by law, requires us to obtain a permanent easement. Also by law, you have the right to compensation for granting this easement.