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Petralogix Engineering, Inc. et ra I o �/� <br /> 26675 Bruella Road, Galt,Ca 95632 <br /> (T) 209-400-5729 <br /> dkramerPpetralogix.com <br /> www.petralogix.com <br /> May 19, 2020 <br /> Project No.2019-00072 <br /> Mr.Naseem Ahmed <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton,CA 95212 <br /> nahmed@sjgov.org <br /> (209)468-3436 r 1mcmm <br /> MAY 19 2020 <br /> Subject: Addendum-Nitrate Loading Stud X ENVIRuNMENTAL HEALTH <br /> Revised Nitrate Mass Balance Analysis DEPARTMENT <br /> 16475 Tide Road <br /> Ripon,San Joaquin County,California <br /> APN: 203-100-17 <br /> Dear Mr.Ahmed: <br /> Please find below the revised nitrate loading mass balance results based on input from the San <br /> Joaquin County Environmental Health requesting the proposed 4-bedroom,3-bath residence average <br /> daily flow be based on 100 gallons for the first bedroom and 50 gallons for each additional bedroom. <br /> Based on the revised guidelines, the proposed 4-bedroom residence will therefore contribute an <br /> average of 250 gallons per day. <br /> Revised Nitrate Loading Results <br /> A revised nitrate loading scenario was performed to determine the impact from the proposed project <br /> with the revised average daily flow of 250 gallons per day;all other variables presented below remain <br /> the same as previously calculated for the site which this letter is an addendum to'. The following <br /> table presents a summary of the revised nitrate loading calculation. The revised calculation is <br /> included as an attachment. <br /> ' Petralogix Engineering incorporated. Nitrate Loading Study for 16475 Tide Road, Ripon,California. Project No. 2019-00072. <br /> September 19,2019. <br /> www . petraIoQix . com <br />