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nEIRINEIL O. ANL,�tSON & ASSOCIATES, INC. <br /> GEOTECHNICAL•ENVIRONMENTAL•GROUNDWATER•INSPECTIONS-TESTING-LABORATORY SERVWES <br /> CORPORATE OFFICE SACRAMENTO OflCE <br /> 22 Houston Lane 4229 Notthgate Boulev;d,Suite 3 <br /> 91-63D4 a odi,California 95240 Sacramento,California 9M34 <br /> srocKTON (209)472-1091 (209)367-3701 (916)929-9267 <br /> `s S O c` RANCHO CORDOVA (916)631-4455 FAX:(209)333-8303 FAX:(916)929-9269 <br /> July 18, 2001 <br /> Our Job No. LG00-426 c-n <br /> Diana Speare <br /> 859 Vanstom Court <br /> Galt, CA 95632-3419 <br /> f <br /> Subject: Report Addendum <br /> Soil Suitability 1 Nitrate Loading Study <br /> Proposed Minor Subdivision (MS-00-33) <br /> 11021 N. Golfview Road,Lodi, CA <br /> Dear Diana, <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. This work was performed for your project. <br /> A second dwelling unit can be constructed on a given site in the county and can be up to <br /> 1500 sq-ft, consisting of three(3)bedrooms. This letter is an addendum to the soil suitability- <br /> nitrate loading report dated March 7, 2001,that provides the additional calculation and <br /> recommendation required by Mr. Huggins. <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(4)bedroom residence,the typical occupancy of the main residence would probably <br /> range between two to five(5)persons resulting in a daily waste water flow between 100 to 250 <br /> gallons per day (see Table 1). The potential impact of a legally permitted second dwelling unit <br /> containing three (3)bedrooms is estimated to include an occupancy of three(3) additional people <br /> to the property. <br /> The average nitrate concentration of the typical residential septic waste is normally <br /> considered to be 45 mg/L-N.' Table 1 presents the quantity of effluent associated with a four(4) <br /> bedroom residence with the addition of a second dwelling unit. <br /> ' Otis,R.J.,Boyle,W.C., 1980,Design manual,onsite wastewater treatment and disposal systems:U.S. <br /> Environmental Protection Agency,EPA 62511-80-012. (See page 100,table 6-1). <br />