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010) NEIL O. AN- 'RSON & ASSOCIATES, INC.GEOTECHNICAL• vIRONMENTAL•GROUNDWATER•INSPECTIONS• TING•LABORATORY SERVICES <br /> CORPORATE OFFICE SACRAMENTO OFFICE <br /> 22 Houston Lane 4229 Nor t�gate Boulevard,Suite 3 <br /> CHICO (530)991.6304 Lodi,California 95240Sacramento,Califonva 95834 <br /> STOCKTON (209)472-1091 (209)367-3701 (9l6)929-9267 <br /> RANCHO CORDOVA (916)631-4455 FAX:(209)333-8303 FAX:(916)929-9269 <br /> July 17, 2001 <br /> Our Job No. LGO 1-191 <br /> Mr. Danny Burgess <br /> 2001 Oxford Way <br /> Stockton, CA 95204 <br /> Subject: Addendum Letter <br /> Soil Suitability-Nitrate Loading Study <br /> 3734 W. Country Club Blvd. <br /> Stockton, California <br /> Dear Mr. Burgess, <br /> Per the instructions of Mike Huggins, Supervising Environmental Health Specialist, San <br /> Joaquin County Public Health Services, Environmental Health Division, our office was directed <br /> on July 16, 2001 to include a calculation for a second dwelling unit for nitrate loading projects <br /> conducted in San Joaquin County. A second dwelling unit can be constructed on a given site in <br /> the county and can be up to 1500 sq-ft, consisting of 3-bedrooms. We understand that you have <br /> no plans to construct a second dwelling unit on the property however the analysis needs to be <br /> performed. This letter is an addendum to the our soil suitability-nitrate loading report dated July <br /> 13, 2001, that provides the additional calculation. <br /> Nitrate Loading Analysis <br /> The quantity of household waste water was estimated to be 50 gallons per person per day. <br /> In a four bedroom residence, the typical occupancy of the main residence would probably range <br /> between two to five persons resulting in a daily waste water flow between 100 to 250 gallons per <br /> day(see Table 1). The potential impact of a legally permitted second dwelling unit containing 3 <br /> bedrooms is estimated to include an additional 3 people to the property. The average nitrate <br /> concentration of the typical residential septic waste is normally considered to be 45 mg/L-N.' <br /> ' Otis,R.J.,Boyle,W.C., 1980,Design manual,onsite wastewater treatment and disposal systems:U.S. <br /> Environmental Protection Agency,EPA 625/1-80-012. (See page 100,table 6-1). <br />