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January 7;2003 <br /> a Job-Number: LG02-026 <br /> Page 6 <br /> Table 2: <br /> Estimated-Average Daily Flow. <br /> Category= Use People Sum <br /> Office Staff(5 15 gpd/person 37 37 persons* 15 gpd/person* 5/7=396 gpd <br /> days/week) - <br /> Customers (5 days/week) 5 gpd/person 5 5 peisons *5'gpd/person* 5/7= 18 gpd <br /> ' 2 bedroom caretaker 70 gpd 1 1 person *70 gpd/person=70 gpd <br /> house(7 days/week)'- xU <br /> Average Daily Flow: 484 gpd <br /> —gpd is gallons per day. <br /> —the factor 5/7 converts the average daily flow to a 5 day work week. U <br /> 2 0 a <br /> The components of the septic system consist of a 1 G00 gallon and d0 tic tank used in <br /> gllon septic <br /> parallel. .The condition of the tanks are unknown. Jon Reed indicated there have not been any <br /> problems with the septic system.. <br /> According to a method presented in the San Joaquin County Septic Standards, a.calculation for a <br /> - filter bed septic system was.made to check whether-the existing filter bed-size is adequate. ,The <br /> following is the-formula presented by San Joaquin County.Septic Standard manual. <br /> Average Daily Flow(ADF) (Monday-Friday): 484 gpd ADF orn Table 2) <br /> Use soil factor($F)-for siltancla loam: 0.200 SF <br /> Base tank capacity (BTC): 1200 gals. ; <br /> Calculated Tank Capacity (CTT: 1200 gals. (BTC) + 484-gals. (ADF) = 1684 gal. (CTC) <br /> the existing 1,600 gallon and 2000 gallon tanks in parallel should be adequate <br /> r Equivalent leach.line (LL): 1684 gal. (CTC)x 0.200 (SF) =337 ft (LL) <br /> r Filter Bed Multiplication Factor,- <br /> --Filter <br /> actor:Filter Bed Area: 337 (LL)x3 (fdctar) = 1010 sf(required area) <br /> Existing Filter^Bed Area:2 beds, 6;5 ft x 80 ft.each, 1040 sf(existing area) <br /> According to the San Joaquin County Septic Standards Tnethod'of calculating filter bed size,'the <br /> existing filter bed septic system should be about the right size for the proposed use. However, <br /> the estimates presented do not allow.for any additional use beyond those stated. There appears to . <br /> be ample septic tank capacity. <br /> sCPO t 3z <br /> ! <br /> Fir x,. <br /> ,- � Oro - ate 7A9 � <br /> / tom <br />