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C. LEACHLINE SIZING CALCULATIONS Taking the example used above for the 2,000 gallon septic tank and using the 770 gallons ADF for the entire winery facility, the following calculations apply to the 4 - 100 ft LL: Base Tank Capacity(BTC)= 1,200 gal. Leachline Equivalent Requirement= 1,200 gallons BTC+770 ADF x 0.200 Soil Factor(Sandy Loam SF)=394 lineal feet of leachline (LFLL)required. Four hundred LFLL were installed. Taking an application rate of 0.7 gallons/sf/day based upon the average of the two perc tests correlated with the soil-effluent surface area of 4 sf/ft of LL, we find: 4 sf x(4x100 ft LL=400)= 1,600 sf soil-effluent surface area. 1,600 sf x 0.7 gallons/sf/day= 1,120-gallons/day. Therefore, based on the premise that these 4 - 100 ft leachlines can manage the calculated 770 gallons ADF of wastewater for the entire winery, all other leachlines can be considered sufficiently sized. V. CONCLUSIONS NLS§ 4.1. The nitrate loading calculations show the effluent from the winery facility exclusively will theoretically possess a nitrate-nitrogen concentration of 1.70 mg/L NO3-N,well below the Federal nitrate Maximum Contaminant Level (MCL) of 10 ppm NO3-N. Although the entire winery property totals 89.18 acres,this acreage was reduced to only take into consideration the 48.4 acres of the actual winery facility. Consequently,the contribution of nitrogen from human wastewater generation distributed over this acreage significantly lowers the concentration contribution. Nitrate loading emanating from the single family residential structure at the north end of the winery was not factored into the total nitrogen loading from the actual facility because it is evident that nitrogen contributions from this structure would be a minuscule contribution to the subject winery area of 48.4 acres. All winery process wastewater, laboratory originated wastewater, and facility stormwater all flows into three lined holding ponds. This water is managed by the engineering firm of Kennedy/Jenks under Waste Discharge Requirements(WDR)promulgated by the Regional Water Quality Control Board. After pre-treatment by the ponds,the water is discharged to fields with a grass- type crop, south of the lined ponds. The nitrogen septic tank effluent analytical test results were determined to be exceedingly high and unrealistic based on an initial analyses by FGL Laboratories. Subsequent analyses of the same septic tank effluent by A&L Laboratories found the nitrogen concentrations more realistic, although still higher than what would be expected. It is theorized that due to a low number of fixtures (toilets and urinals) in the restroom that is used by most of the employees, a fresh water dilution effect from a greater number of fixtures is not lowering the nitrogen concentration. Page -10- Chesney Consulting