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`.r vftwoe <br /> Beginning with the 1997 packing season, both facilities started using the sodium hypochlorite. The aggregate <br /> volume of water discharged each day is approximately 12,000 gallons. With the gas chlorine system, chlorine <br /> levels ranged from 100 to 120 ppm and occasionally up to 160 ppm. With sodium hypochlorite, the chlorine <br /> levels are more easily monitored and carefully control at 60 to 70 ppms. This level significantly reduces the <br /> chlorine load, which the treatment plant must remove. In this regard, Triple E has progressively, in each <br /> packing season, implemented new and proven packing technologies to maintain our position of leadership in <br /> our industry. <br /> Annual Operating Days and Volume of Water Discharged <br /> For each of the years listed below, the number of operating days and the volume of water discharged is <br /> reported. <br /> Gallons Water Acre-feet to <br /> Year Season Season Days Discharged Dedicated Spray <br /> Start End Packing (million) (°) Field <br /> 1995 (a) (a) 95 1.14 3.49 <br /> 1996 June 22 November 16 105 1.26 3.86 <br /> 1997 June 21 November 16 105 1.26 38.6 <br /> 1998 July 11 November 28 77 0.924 2.83 <br /> (a) Triple E did not track days until 1996. Esfresh did not track until 1997. The Esfresh packing days <br /> essentially mirror Triple E's. <br /> (b) Estimated from overall average. <br /> (c) Discharge based on 12,000 gallons per packing day. Aggregate volume of Triple E and Esfresh. <br /> Overviewof of Water Treatment <br /> At the end of the packing day, the wash tanks are drained and cleaned. The water is piped to the treatment plant <br /> for air sparing and treatment with sodium bisulfite to reduce the initial chlorine load. The water is then filtered <br /> through 5-micron mesh bag filters to remove suspended solids, which are primarily particles of soil. The final <br /> treatment is additional air sparing followed by high-efficiency air stripping. <br /> Dedicated Spray Field Operation <br /> The soil of the spray field is predominately deep gravelly clay loam to gravelly loam with moderately slow <br /> permeability. The available water holding capacity is 0.1 to 0.15 inches/inch and the water intake rate when <br /> irrigated is 0.5 inches per hour. Under the design of the spray field the soil is seldom wetted to depth greater <br /> that 1.5 inches. <br /> The daily volume of treated water is discharged to a 1.4 acre dedicated spray field using low-volume, micro- <br /> sprinklers. The spray field is divided into 8 sets. Each set is sequenced by a controller to operate 45 minutes <br /> per day. The spray field operating time is 6 hours per day. The application not to exceed 12,240 gallons per <br /> day is equivalent to .032 inches per acre per day. <br /> Volatilization and evaporation at the soil surface are two operative processes. Evaporative loss is estimated to <br /> range from 0.55 inches per day in July to 0.14 inches per day in October. The mean evaporatative loss of the <br />