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0 W'yp r f L. <br /> WASTE DISCHARGE REQUIREMENTS ORDER.NO., 3 <br /> EARNIE AND MARY SCHENONE <br /> SCHENONE SPECIALTY FOODS, INC. <br /> SAN JOAQUIN COUNTY <br /> 10. The design of the dispersal area is based on measured infiltration rates. Infiltration generally <br /> increases with the investigated depth (43 min/inch at 2.0 ft. depth, 25 min/inch at 3.5 ft. depth, 7.9 <br /> min/inch at 7.2 ft. depth, and 4.6 min/inch at 16.0 ft. depth). <br /> 11. The dispersal area is equipped with a manual distribution valve to allow switching flow to either of <br /> two subareas. The first area consists of a 1,800 sq. ft. gravel-less system leachbed; the second area <br /> consists of two 40-foot long leachlines each of which terminates in a 48-inch diameter, 16-foot <br /> deep seepage pit. The Discharger proposes to direct wastewater flow between the two systems by a <br /> manual valve; however, an automatic distribution valve is required to prevent pressure dosing the <br /> seepage pits and therefore discharging excess wastewater to the seepage . x <br /> 12. The leachbed will consist of one-inch inside diameter pipe installed in Infiltrator Chambers <br /> (gravelless trench system). Infiltrator Chambers will be spaced six-inches apart. The leachbed will <br /> occupy approximately 1,800 sq. ft. The 40 ft. long leachlines will be constructed of typical pipe <br /> and rock construction. <br /> 13. Monitoring of the wastewater depth in the disposal areas can aid in early detection of leachfield <br /> failure. The Discharger will install observation wells in the disposal trenches for this purpose. In <br /> addition, the groundwater monitoring wells are required to ensure that the discharge complies with <br /> State Board Resolution No. 68-16. <br /> 14. The design flow for the WWTF is approximately 2,000 gallons per da, which is greater that the <br /> maximum estimated flow of 1,500 gpd in the month of December. <br /> Site-Specific Conditions <br /> 15. The average annual rainfall at the site is approximately 17.4 inches per year; the one-hundred year <br /> return annual total rainfall amount is 32.3 inches per year. Average <br /> a eva otrans iration is <br /> approximately 52.1 inches per year. <br /> 16. .The RWD state the maximum monthly estimated value for percolation of wastewater(21.7 inches) <br /> is approximately one-half of the maximum allowable monthly percolation value (50.2 inches). The <br /> maximum allowable monthly percolation value is five-percent of the most restrictive permeability <br /> value. <br />€ 17. The topography of the site is relatively flat at an elevation of approximately 125 feet above mean <br /> sea level. <br /> 18. On-site soils consist of loam to sandy clay loam. According to the soil survey for San Joauqin <br /> County, surface soil is characterized as Tokay fine sandy loam with moderatly rapid permeability. <br /> 19. Based on San Joaugin County Flood Control and Water Conservation District maps, groundwater is <br /> believed to exist at a depth of 140 feet below ground surface. Groundwater flow direction is to the <br /> southwest but may vary based on operating groundwater extraction wells. <br /> �''.i5an Jwqun von15i5ta11106ncnT5nn lo:iquiiChxvlwlicsN+DR r2,Cac <br />