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r H ENVIRONMENTAL HEALTDEPARTMENT <br /> °"'" SAN JOAQUIN COUNTY <br /> (brit Supervisors <br /> Donna K.Heran.R.E.H.S. Carl Borgnian,R.E.H.S. <br /> y Dfrecvor 304 East Weber Avenl.le. Third Floor <br /> ` Mike Huggins.R.E.H.S.,R.D.[. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W. Wilson, R.E.H.S. <br /> • �'. Program akanager Telephone: (209) 468-3420 Margaret Lagorio, R.1 .H.5. <br /> kaFOR Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Al anagen Fa'C: (209) 464-01 38 Mark Barcellos, R.E.H.S. <br /> December 24, 2004 <br /> Vernon Vierra <br /> FILE COPY <br /> Delta Building Design <br /> 151 W.Taddei Road <br /> Acampo, CA 95220 <br /> Re: Soil Suitability/Nitrate Loading Study <br /> PA-03-487 — 3737 W. Eleventh St., Tracy <br /> The San Joaquin County Environmental Health Department (EHD) has completed the <br /> review of the Soil Suitability/Nitrate Loading Study, dated November 19, 2004, prepared <br /> by Neil O. Anderson and Associates, and has the following comments for your <br /> consideration. <br /> Prior to EHD approval of any building permits, a revised plot planmust be submitted for <br /> review. The revised plot plan must address the items noted below. <br /> • The current plot map shows the area reserved for the septic system to be 9000 <br /> square feet. The actual area is approximately 5400 square feet. The revised site <br /> map must show the correct area being reserved for the onsite system and the <br /> 100%replacement. <br /> • . Include a layout, drawn to scale, of the filter bed system to be installed and the <br /> 100% future repair area. State on the revised plans the number of residents, <br /> employees and customers the system is being designed for. Also show how the <br /> leach field will be barricaded so it cannot be driven over,parked on, or used as a <br /> r� storage area. t , <br /> • The report recommends the use of two 2000-gallon septic tanks for the project. <br /> Please indicate the septic tanks sizes on the revised plot map. <br /> • Show the location of all neighboring wells located within 100 feet of the project <br /> site on the revised plot plan. <br /> ► The results of the nitrate loading calculations indicate there will be a nitrate impact to <br /> groundwater from the wastewater discharge. As a mitigation measure,Neil O. Anderson <br /> & Associates recommends the installation of two inches of garden compost or peat below <br />