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Q°" - -- SANsd0A0UiN COU NTY- cq�i�P� Greatness grows here. July 7, 2020 Mike Torell II T2 Construction 2475 Dunn Rd Merced, CA 95340 Environmental Health Department ORIGINAL Wayne Fox, REHS, Interim Director PROGRAM COORDINATORS Robert McClellon, REHS Jeff Carruesco, REHS, RDI Willy Ng, REHS Muniappa Naidu, REHS Michael Kith, REHS Melissa Nissim, REHS RE: Engineer Plan Check for Wastewater System Design (Holding Tank) response letter Joe Grindstone Association 13550 Highway 12, Lodi APN 055-020-02, SR0081813 The San Joaquin County Environmental Health Department (EHD) has reviewed the letter (the Letter) dated May 29, 2020 prepared by Kjeldsen Sinnock Neudeck, Inc. (KSN) regarding the proposed wastewater system design to install a 5,000 -gallon waste -water holding tank (the tank) at the above -referenced location (the site). EHD has the following comments for your consideration: The proposed location of the tank does not meet minimum setback requirement of 100 feet to per Table 1.5 of Section 1.5 of the San Joaquin County Onsite Waste Treatment System (OWTS) Standards. KSN stated in the Letter that the location meets 50 -foot set back as an "Existing, Non - Conforming OWTS". The parcel is not a non -conforming lot, as the property is listed as a 12 -acre parcel. Please submit revision / addendum for the location of the tank that meets minimum of 100 feet setback to waterways per OWTS Standards. 2. EHD accepts the revised calculations based on the attendee record of the 2019 calendar year provided in the letter. - Average 13 attendees per day for Peak Week use (average is based on maximum attendee of 90 attendees per day over a 3 consecutive day period according to 2019 attendee records); - Overnight Water Use of 40 gallons/capita/day at assumed 25% of total, - Camp Day Use of 20 gallons/capita/day at assumed 75% of total; The peak 7 -day required capacity is 2,275 gallons. 3. EHD accepts the proposed 5,000 -gallon holding tank which meets the 2,275 gallon peak 7 -day capacity plus 100% reserve. 4. EHD accepts the revised Service Agreement with Advanced Septic Service, LLC dated May 29, 2020 which scheduled pumping frequency quarterly (April 1, June 1, August 1, October 1) or as needed, with the following condition: - In addition to the quarterly pumping, pumping must be conducted between "time -to -pump" alarm which is set at tank being 80% full, and "exceeding reserve storage level" alarm which is set at 95% full (see below). EHD recommends scheduling pumping with the contractor as soon as the "time -to - pump" level has been reached in order to prevent any accidental overfill and release of wastewater to the environment. 5. EHD accepts the audible and visual alarm setting of "time -to -pump" alarm which is set at tank being 80% full, and "exceeding reserve storage level" alarm which is set at 95% full. Ensure that the 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjgov.org/ehd