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Aquifer Model results: <br /> - Maximum drawdown at the proposed Ag pumping well is estimated to be approximately 15 feet at peak <br /> pumping rates and a radius of influence with less than a foot of drawdown (unconfined conditions) is estimated <br /> to be approximately 1,000 feet for short term/intermittent peak pumping rates. <br /> - The predicted maximum drawdown 1,200 feet from the proposed AG well is four to 4.5 feet during sustained <br /> seasonal pumping with recovery expected during the off/wet season.The conservative case (confined aquifer <br /> model) predicts up to 7 feet of drawdown as a result of long-term, sustained pumping at the maximum pumping <br /> rate of 800 GPM, and less than one foot of drawdown at the annualized pumping rate of 95 GPM. The most <br /> conservative projections are within the range of seasonal water level fluctuations recorded for the area and <br /> should not adversely impact existing off-site wells or contribute to significant water level declines. <br /> 20 <br /> Aquifer Dist. Pumping rate 7 days 1 month 1 year 5 years <br /> years <br /> Conf 1200 ft Drawdown Peak Pumping 3.01 3.55 4.46 5.11 5.56 <br /> 1200 ft Annualized pumping rate 0.36 0.42 0.53 0.6 0.66 <br /> Unconf 1200 ft Drawdown Peak Pumping 0.36 1.4 3.78 5.41 6.82 <br /> 1200 ft Annualized pumping rate 0 0.17 0.45 0.64 0.81 <br /> Let me know if you have questions or need to see all the assumptions for this evaluation. <br /> Thanks, <br /> Casey <br /> Casey Kipf, P.G., CHG <br /> Senior Geologist <br /> CONDOR EARTH <br /> Direct:(209)-938-1045 <br /> Mobile:(209)-969-2034 <br /> Email ckipf@condorearth.com <br /> Company Website:www.condorearth.com <br /> From: Ruvalcaba, Cesar [EHD] <cruva Ica ba @sjgov.org> <br /> Sent: Wednesday,June 22, 2022 12:53 PM <br /> To:Casey Kipf<ckipf@condorearth.com> <br /> Cc:John Lane<jlane@condorearth.com>; Robert Job<rjob@condorearth.com>; Kang,Jasjit [EHD] <jkang@sjgov.org>; <br /> Naidu, Muniappa [EHD] <Mnaidu@sjgov.org>; Ruvalcaba, Cesar [EHD] <cruvalcaba@sjgov.org>; Sangalang, Scott [EHD] <br /> <ssangalang@sjgov.org>; Shih, Steven [EHD] <sshih@sjgov.org>; csonsdrilling@gmail.com <br /> Subject: San Joaquin County Well Permit Application -20229 Ripon Rd, Ripon <br /> Good afternoon Mr. Kipf, <br /> Please see attached well permit application for San Joaquin County. I also cc'ed the driller, Canepa <br /> and Sons Inc., at csonsdrilling(c-D_gmail.com any questions. <br /> Please feel free to contact me for any questions. <br /> Thank you, <br /> Cesar Ruvalcaba <br /> San Joaquin County Environmental Health Department <br /> Lead Senior Registered Environmental Health Specialist <br /> 1868 East Hazelton Ave <br /> Stockton, CA 95205 <br /> 2 <br /> 3 <br />