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WASTE DISCHARGE REQLIIRE1pIENTS ORDER NO. • -4- <br /> R. LAWSON ENTERPRISES DBA WILDROSE VINEYARDS <br /> SAN JOAQUIN COUNTY <br /> 16. The Discharger proposes to land-apply the winery wastewater. The application area consists of <br /> vineyard and cherry orchard cropland. The total cropland is approximately 9.2 acres and an <br /> additional 4.6 acres of fallow land can be made available for irrigation by planting a crop. <br /> 17. Because Discharge Specification B.2 prohibits application of winery wastewater during rain events <br /> or when the soil is saturated,the Discharger will install a 12,000 gallon aboveground storage tank <br /> to store winery wastewater until climatic conditions allow application. <br /> 18. The winery is served by a municipal water supply. The primary water production well is located <br /> approximately 500 feet north of the wastewater pond. A secondary(previously used)municipal <br /> water supply well is located approximately 150 feet northeast of the wastewater pond. The <br /> secondary well was replaced due to elevated concentrations of dibromochloropropane (DBCP). <br /> Samples from the primary well were collected for chemical analysis on 29 November 1999, and <br /> selected analyte results are presented below. <br /> Anal3je Units Concentrations <br /> Sulfate mg/1 ND (1.0) <br /> Nitrate (as Nitrate) mg/1 ND (0.4) <br /> Chloride mg/1 6 <br /> Total Alkalinity mg/l 80 <br /> Elec. Conductivity2 umhos/cm 177 <br /> Total Hardness mg/1 36 <br /> Calcium mg/l 6 <br /> Magnesium mg/1 5 <br /> Sodium mg/1 16 <br /> Potassium mg/1 8 <br /> s ND denotes Not Detected, detection limit shown in parenthesis. <br /> 2 Electrical Conductivity <br /> 19. Three groundwater monitoring wells exist around the wastewater evaporation/percolation pond. In <br /> 1999, groundwater elevations in the wells vaned from approximately 60 to 70 feet below ground <br /> surface. <br /> 20. Previous use of the wastewater pond by Dole Fruit, and present day use of the pond by CFP,may <br /> have impacted local groundwater quality. Groundwater quality at the wastewater pond is <br /> characterized by sample events performed from June 1993 to July 1999. Groundwater samples <br /> collected from Wells MW-2 and MW-3 are suspected of being impacted by prior wastewater <br /> discharge to the pond. Average concentrations in samples collected from the wells are presented <br /> below. <br /> Analyte Units MW-1 MW-2 MW-3 <br /> Sodium mg/1 35 106 120 <br /> Manganese mg/1 0.10 2.36 4.87 <br /> Iron mg/1 0.97 0.57 2.94 <br /> Sulfate mg/1 64 228 172 <br /> Chloride mg/l 37 177 254 <br /> C\Project FiWSR.Mld R.16W m dR WDR. <br />