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MONITORING AND REPORTING PROGRAM No. R5-2013-0122 MRP-4 GENERAL ORDER FOR EXISTING MILK COW DAIRIES Table 2. NUTRIENT MONITORING Soil Once every 5 years from each land application area (may be distributed over a 5-year period by sampling 20% of the land application areas annually): Laboratory analyses for soluble phosphorus The following soil tests are recommended but not required: Spring pre-plant for each crop: Laboratory analyses for: 0 to 1 foot depth: Nitrate-nitrogen and organic matter. 1 to 2 feet depth: Nitrate-nitrogen. Fall pre-plant for each crop: Laboratory analyses at depths below ground surface of: 0 to 1 foot: Electrical conductivity, nitrate-nitrogen, soluble phosphorus, potassium and organic matter. 1 to 2 feet: Nitrate-nitrogen. Irrigation Water Each irrigation event for each land application area: Record volume (gallons or acre-inches) and (well or canal) of irrigation water applied and dates applied. One irrigation event during each irrigation season during actual irrigation events: For each irrigation water source (well and canal): Electrical conductivity, total dissolved solids, and total nitrogen.3 Data collected to satisfy the groundwater monitoring requirements (below) can be used to satisfy this requirement. The Discharger shall monitor irrigation water(from each water well source and canal)that is used on all land application areas. 2 Initial volume measurements may be the total volume for all land application areas. 3 In lieu of sampling the irrigation water,the Discharger may provide equivalent data from the local irrigation district. Monitoring of Surface Runoff The Discharger shall monitor any discharges of manure and/or process wastewater, storm water, and tailwater from the production area and land application area for the constituents and at the frequencies specified in Table 3 below. Table 3. DISCHARGE MONITORING Discharges (Including Off-Property Discharges) of Manure or Process Wastewater, from the Production Area or Land Application Area Daily during each discharge: Record date, time, approximate volume (gallons) or weight(tons), duration, location, source, and ultimate destination of the discharge. Field measurements of the discharge for electrical conductivity, temperature, and pH.