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f <br /> LIVE OAK GEOENVIRONMENTAL, INC. <br /> 407 W.Oak St., Lodi, CA 952404- (209)369-0375 o iogeiodi.com <br /> September 20y 2010 ra gC��VE D <br /> Transmitted b U.S. Mail and Fax: 464-0138 �]v]] <br /> Project Number: 1013 SEP 2 2 1010 <br /> Mr. Mike Escotto ENVIRUNIVIEN t HEALTH <br /> San Joaquin County Environmental Health Department PERMIT/SERVICES <br /> 600 E. Main Street <br /> Stockton, CA 95202 <br /> ---m _'Regarding: ­ Addendum to Soil Suitability/Nitrate Loading-Study- <br /> &Calculation of Septic Tank Capacity <br /> PONDL Winery <br /> 665 W. Turner Rd, Lodi, CA <br /> PA-1000051 (SA) <br /> Dear Mr. Escotto, <br /> You have brought it to our attention that there was a procedural error in the tank size <br /> calculation included in our August 5, 2010 addendum to this report. The required tank size is <br /> recalculated below. <br /> The calculations to determine septic tank volumes are provided in the Disposal Standards. For <br /> an average daily flow (ADF) of 1,500 gallons or less, the base tank capacity(BTC) is 1,200 <br /> gallons. <br /> The ADF is calculated as follows: <br /> ADF= Average Daily Flow from anticipated use of the facility <br /> Two employees per day <br /> (Dayworkers = 30 gallons per day per person) <br /> - Up to 20 customers per day 7- <br /> ,(Bar &Cocktail Lounges = 20 gallons.per day per person) <br /> ADF =(2 *30) f (20 *20) = 460 gallons <br /> The use levels indicated above are probably not the average use but represent the peak use at <br /> the facility. During the off-season months, use levels at the winery will most likely be much <br /> lower. <br /> Because the ADF is less than 1,500 gallons, the required BTC is 1,200 gallons. However, to <br /> lessen the nitrate load to the immediate area, we still recommend using a 2,000 gallon tank. <br /> This size would accommodate the required BTC and allow an extra 800 gallons of volume , <br /> (about 67 percent) over what is required. The extra volume of the tank will increase the septic <br /> Environmental o Engineering Geology 4, Geophysics <br />