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e r <br /> � kk <br /> t <br /> The groundwater from the School's well is slightly alkaline at pH 7.3. pH measures the hydrogen <br /> concentration and is important in the formation of nitrate. If the pH is below 7.0, the ammonium <br /> ion (NH4) predominates and nitrate formation can readily take place. If the pH is above 7.0, <br /> ammonia (NH3)predominates, thus impeding nitrate formation. <br /> Regarding surface water, there are no bodies of water in the proximity of the proposed Kingdom <br /> Hall, other than designated stormwater detention basins. The subject site is outside the 100-year <br /> flood zone. <br /> V. PROPOSED SEPTIC SYSTEM LOADING AND OPERATIONAL DESIGN <br /> ' The following calculations are based upon information provided too our <br /> firm in addition to San <br /> Joaquin County Environmental Health Department requirements. It is our understanding the <br /> Kingdom Hall will conduct meetings under the following tentative scheduling: <br /> g <br /> t <br /> SUNDAYS: <br /> 150 Parishioners in each of two Auditoriums = 300 people @ ea. meeting <br /> Three sets of meetings: 9am-12pm, 12pm-3pm and 3pm-6pm; therefore, total of 900 people/Sunday <br /> TUESDAY, WEDNESDAY AND THURSDAY EVENINGS: <br /> 7pm-9pm total of 300 people each evening <br /> NO MEETINGS FRIDAY, SATURDAY AND MONDAY <br /> i <br /> There will also be husband and wife caretakers on-site in the evenings and all day on Mondays. <br /> This apartment will include a kitchenette without a garbage disposal. There will be no kitchen for <br /> the Auditoriums. <br /> 4 <br /> The total anticipated daily wastewater flow will be: 900 Parishioners x 5 gals/person x one day/wk= <br /> I�-- 4,500 gallons + 300 Parishioners x 5 gals/person x 3 days/wk= 4500 + Two people/day x 50 <br /> 1 <br /> gals/person x 7 days/wk= 700: 4500 + 4500 + 700 = 9700 gals/wk_7 days/wk= 1400 gals/day. <br /> (1400 gals=Average Daily Flow-ADF). The Calculated Tank Capacity (CTC) is as follows: Base <br /> Tank Capacity (BTC) =2000 gals+ 1400 gals ADF =3400 gals CTC. Therefore, two- 2000 gallon <br /> septic tanks in series must be used. This will ensure 24 hour detention times for most of the sewage <br /> r after every Sunday's flow. <br /> Leachline requirements are as follows: 3400 gals CTC x 0.250 soil factor = 850 lineal feet of <br /> leachline required. There will be four, five-foot diameter seepage pits, 25 feet deep. These four pits <br /> are equivalent to 440 feet of leachline ( one - 60" dia. pit= 110 ft leachline). <br /> 4 <br />�. Vaffey Ag P4searck <br />