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PROJECT : Ahern Road Fueling Station February 28, 2022 <br /> Job No : 20 -544 Ross P . Shoat Civil Engineer <br /> Location : 29700 Ahern Road , Tracy, CA A. P . N . 255 -020440 <br /> Advantek AX100 Onsite System for a Fueling Station on Ahern Road in San Joaquin County <br /> This system is being proposed for its Nitrate reduction capabilities to comply with the <br /> reduced Nitrate loading required for the area . A Nitrate study was performed by Live Oak Geo <br /> Environmental ; Inc . and it was found that the nitrate loading from a standard onsite system at <br /> that location could potentially result in a discharge up to 5 times higher than the allowable <br /> Nitrate Drinking Water MCL of 10 mg/ L . After treatment the effluent will be discharged by <br /> pressure dosing to a system of 27" deep gravel filled trenches . <br /> The design Load for this facility is being based on San Joaquin County flow standards and <br /> information from the owner . A preliminary calculation was provided by GSV Consulting . That <br /> load is broken down as follows : <br /> 1 . Projected flows for customers <br /> i . 630 Vehicles/day <br /> ii . 10 gallons/vehicle <br /> iii . 6, 300 total <br /> b . Employees <br /> i . 30 gallons/employee <br /> ii . 5 employees <br /> iii . 150 gallons/day <br /> 2 . The total estimated daily load this design is being based on a 6,450 gallons/day <br /> maximum load with a 3 , 225 gallons/day average load . It will consist mainly of <br /> domestic type water with a small amount incidental food prep waste . <br /> 3 . These flows correspond to the design loads and reported usage at a similar Truck Stop <br /> located at the intersection of State Highway 119 and State Highway 5 in Bakersfield . <br /> The size of the leach field is based on the average percolation rate of 3 tests performed within <br /> the disposal field area by Live Oak Geo Environmental ; Inc . . The average of the 3 - percolation <br /> tests is 10 . 13 mpi . That percolation rate when cross referenced with the application rate chart <br /> in the State OWTS manual allows an application rate between . 786 and . 8 gal/sf/day. The <br /> slower of the two rates will be used for design purposes . <br /> Page 3 Of 11 <br />