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K fr KJELOSEN Stephen K. Sinnock, RE S S I N N O C K Christopher H. Neudeck. P.E. Neal T. Colwell, P.E. N N E U O E C K Barry O'Regan, P.E. inn. CIVIL ENGINEERS & LAND SURVEYORS July 8, 2020 Mr. Jeffery Wong Jwongka,sj og v_org Senior Registered Environmental Health Specialist Environmental Health Department San Joaquin County 1868 East Hazelton Avenue Stockton, CA 95205 2414-0010 08-300 Re: Grindstone Joe's Engineer Plan Check for Wastewater System Design (Holding Tank) Dear Mr. Wong, Thank you for your comments on the revised Grindstone Joe Association (Association) wastewater holding tank design submittal package and for having a discussion with us to clarify the policy and the County's stance on these items. In response to your July 7`", 2020 comments, the only outstanding item to be addressed is the setback distances of the tank. Please see our response below and the attached exhibit in response to this issue. Your review comments are included below, with our responses indicated in bold italics. 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. The physical location of the site does not allow for 100 foot setbacks from all waterways. The site is located on an island/peninsula that is surrounded by water andlor a lagoon. At its widest point, the island is only approx. 150 feet across and is approximately 130 feet wide at the proposed tank location. The proposed tank location exceeds the setback requirement of 100 feet from the existing water well. The proposed location of the tank is close to the existing restroom and at a location strategically placed to allow access for pumping. Please see the attached exhibit that shows the location of the existing well, the 100 ft setback distance from the well, the location of the proposed holding tank, and the setbacks from waterbodies at this location.. Based on this we request a variance of the setback requirement be granted for this project. Corporate Office: 711 N Pershing Avenue I Stockton, CA 95203 1 209-946-0268 1 www.ksninc.com West Sacramento: 1550 Harbor Boulevard. Suite 212 1 West Sacramento CA 95691 916-403-5900