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?,W,, CITV-OF STOCKTON DEPARTMENT OF MUNICIPAL UTILITIES 2500 NAVY DRIVE STOCKTON, CA 95206-1191 DEC 3.12001 (209)937-B750 FAX(209)937-6706 ENVIf,,;,,;;w_ PERMIT/SERVICES LTH December 27, 2001 Public Health Services San Joaquin County Environmental Health Division 304 E. Weber Avenue Stockton, CA 95202 WELL PERMIT APPLICATIONS FOR 743 AND 819 W. ANDERSON STREET, STOCKTON In response to your letter dated December 10, 2001, staff from the Municipal Utilities Department has reviewed the information provided regarding the well permits for 743 and 819 W. Anderson Street, Stockton. In general, the City of Stockton's interest is to ensure the protection of the groundwater aquifers that are used to provide potable water supply to the urban area of Stockton. In reviewing the data provided in your letter, it appears that the applicant will be required to drill the perspective wells substantially deeper than 200 feet due to the sanitary seal requirement under consideration. This would place the well casing perforations at aquifer levels that are used for potable water supply by the water utilities serving the general population. As you are aware, the City of Stockton is located over a groundwater basin that has been classified as "critically overdrafted" by the state Department of Water Resources. The immediate threat to the water supply aquifers principally used by the water utilities within the Stockton urban area is saline intrusion. In our view, the approval of these permits could exacerbate the problem by accelerating the movement of saline water in an easterly direction and further degrade the aquifers providing potable water. Therefore, it is our request that the County, as lead agency with approval authority, provide an environmental review of this project, to determine the hydrological impacts of these wells on the potable aquifers in this overdrafted groundwater basin. Any impacts should be mitigated to a less than significant level. Thank you for the opportunity to review and comment on these well permit applications. MORRIS L. ALLEN DIRECTOR OF MUNICIPAL UTILITIES MLA:EF:as cc: Ed Formosa, Deputy Director of Municipal Utilities, Water/Collections Mark Madison, Senior Civil EngirStocktongov.00m "STOCKTON...CALIFORNIA'S SUNRISE SEAPORT"