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Sanguinetti Investments,Circle K Project Number: LGS080546 December 17, 2008 Total Pit Volume(gals) = 2.5^2 *3.14 *25 *7.48 *8 *0.15 Total Pit-261uine(gals)"=4,404(total pit storage) Surge Tank Volume = 2,845 gals(4,000 gals-1,155 gals) Total Available Surge Volume =%155ga1s-+-:4,404 gals Total-AvailibleMSurge'Volume— 5559 gals The seepage pits will provide additional capacity in the event of periods of high use not anticipated by the design. TK6.surge�capacity grid`seepage'pits_should;.prevent the b-ed from over saturating'duringilimited periods'of-high'-low: Please refer to the attached plans for additional septic tank details and layout. Pressure Dosing System and Passive Venting within the Graceless Chambers 'Pressure dosing is proposed with inYa drain-field chamber for uniform application. The chamber i also promotes passive Venting which prov'ides'abbridarii oxygen which enhances nitrification. The chamber-and carbon flter,vents will,promote-an aerobic environment for nitrification of the dosed effluent "Within the bottom of the trench, anaerobic processes, supplemented by cellulose,"will enhance denitrification. The=fine=grained soils will slow the percolation of the effluent allowing-some.moisture-to accumulate on.the bottom of.the_trench.As indicated, we are also recommending four (4) inches-of loose compost soil-be placed on-the bottom of the four (4) trenchevThe wood additive should,be evenly mixed within the sand at a,ratio of about 20 percent by volume. Together, the compost and wood additive, along with naturally occurring carbon.inthe wastewater flow will provide an ample carbon source for denitrification. A`duplex pumping systerhJs required by the EHD for commercial septic systems. We recommend an Orenco P3005 (30 gpm) pump package with time dosing panel. Please refer to the drawing for additional details and the pump curve attachment for the pump selection information. Monitoring The'San Joaquin County:EHD requires initial monitoring on all commercial engineered septic systems for nitrate reduction. This system will require twelve (12) monitoring visits which may occur.Aover.one year. Several monitoring parameters will be required: - Note the water meter reading. - Inspect the overall septic system condition. - Measure fluid level in all four (4) 2-inch dia. monitoring ports - Draw fluid in four monitoring ports for trenches 1 to 4 to make one (1) composite and test for nitrate and ammonia. - Extract effluent from one (1) lysimeter port and test for nitrate and ammonia. - Extract effluent from septic tank clear water compartment and test for total nitrogen and alkalinity. - Prepare update letter every 6 visits followed by a final report with recommendations after 12 visits to be submitted to the EHD. 902 Industrial Way•Lodi,CA 95240-209.367.3 701•Fax 209.369.4228 50 Goldenland Cr.,Suite 100 •Sacramento,CA 95834.916.928.4690•Fax 916.928.4697 "04 1190 Burnett Ave.,Suite A•Concord,CA 94520.925.609.7224•Fax 925.609.6324 80 N. West Street•Fernley,NV 89408.775.575.6511•Fax 775.575.2652 02007 Neil O.Anderson&Associates,Inc.