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Mr. Benjamin Hall • - 2 - • 15 May 2000 <br /> attached document titled, "Items to be included in a Monitoring Well Installation Workplan and <br /> a Monitoring Well Installation Report of Results." The workplan and well installation report <br /> shall be prepared under the supervision of a registered geologist or engineer. <br /> By 11 August 2000, Musco shall submit a technical report prepared by a Certified Crop Advisor <br /> evaluating the effect of applying wastewater to the land application areas. The report shall <br /> evaluate the present application of approximately 500,000 gpd, and the requested 850,000 gpd <br /> application rate. The evaluation shall include a description of the irrigation schedule, sprinkler <br /> moving intervals, and evidence of wastewater runoff. The report shall also address the brown <br /> areas observed during the 10 May 2000 aerial inspection, crop problems identified upon close <br /> field inspection, water usage of existing and recommended crops, planting/harvesting schedules, <br /> and the long term impact to soil and plant quality of the wastewater application. <br /> The report shall also address percolation, evaporation, and evapotranspiration capacity of the <br /> land, as well as conductivity, TDS, sodium, chloride, BOD, and nitrogen loading. Salt <br /> accumulation in soil and potential groundwater impacts must be addressed. The report must also <br /> provide a technical evaluation of your requested increase in the daily maximum loading rate of <br /> dissolved inorganic solids. <br /> Musco's 31 March 2000 response to the request for information on storage facilities was <br /> insufficient. By 11 August 2000, Musco shall submit a technical report prepared by a Registered <br /> Engineer that addresses storage facility improvements which will allow storage of wastewater <br /> during wet periods. The report shall include a full description of the wastewater storage and an <br /> application plan which will prevent surface runoff, and a description of improvements that will <br /> allow storage of wastewater during wet periods at both the current flow rate and the requested <br /> higher flow rate without an NPDES permit. The report shall include a proposed schedule for site <br /> improvements to meet this requirement. The report must also address an improved tailwater <br /> collection system. Musco is prohibited from using natural drainage ways to control surface water <br /> runoff. <br /> A standard requirement for storage ponds requires the pond to have sufficient capacity to <br /> accommodate allowable wastewater flow, design seasonal precipitation, seasonal ancillary <br /> inflow, and infiltration during the wet season. Design seasonal precipitation shall be based on <br /> total annual precipitation using a return of 100 years, distributed monthly in accordance with <br /> historical rainfall patterns. <br /> The report shall include a description of all the sources of wastewater generation, including <br /> stormwater that falls on the tank farm and the disposal criteria and alternatives for each <br /> wastestream. The description shall include the approximate flow rate, the chemical <br /> concentration of contaminants, and the present disposal method. Improvements to the brine <br /> tank-farm stormwater system is required to prevent contaminated stormwater from discharging to <br /> the natural drainage. The report shall address the disposal of stormwater, and opportunities to <br /> prevent contamination of stormwater. Treatment alternatives to reduce the concentrations of <br /> inorganic salts in wastewater being applied to the land application areas is required. Specific, <br /> measurable criteria to determine the disposal option (class II impoundments or land application) <br /> shall be presented. <br /> C?pm,en FiloSnnNlwtm&n,:uMNIIxJrc <br />