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WASTE DISCHARGE REQUIREMENTS ORDER R5-2012-0103 - 4 - CONSTELLATION WINES U.S., INC. dba WOODBRIDGE WINERY WOODBRIDGE WINERY SAN JOAQUIN COUNTY 3. Off-site disposal of all solid waste streams. Describe the disposal method (e.g. animal feed, land application, off-site composting, landfill, etc.), the amount disposed (tons), and the name of the hauling company. GROUNDWATER MONITORING Prior to construction and/or sampling of any groundwater monitoring wells, the Discharger shall submit plans and specifications to the Board for approval. Once installed, all new wells shall be added to the compliance monitoring network. The following table provides a list of all existing compliance monitoring wells, with two exceptions as noted: MW -1 MW -4 MW -7 MW -10 MW -13 MW -2 MW -5 MW -8 MW -11 MW -14 1 MW -3 MW -6 MW -9 MW -12 1 1 Indicates background well not used for compliance monitoring. All samples shall be collected using approved EPA methods. Groundwater elevations shall be calculated to determine groundwater gradient and downgradient directions. Prior to sampling, the groundwater elevations shall be measured and the wells shall be purged of at least three well volumes until temperature, pH, and electrical conductivity have stabilized. No purge sampling methods are acceptable, if described in an approved Sampling and Analysis Plan. Samples shall be filtered using a 0.45-micron filter prior to preservation or digestion as appropriate. Depth to groundwater shall be measured to the nearest 0.01 feet. Groundwater monitoring shall include, at a minimum, the following: Constituent Units Type of Sample Sampling Frequency Reporting Frequency Depth to Groundwater 1 ±0.01 feet Measurement Quarterly Quarterly Groundwater Elevation 1 ±0.01 feet Calculated Quarterly Quarterly Gradient feet/feet Calculated Quarterly Quarterly Gradient Direction Degrees Calculated Quarterly Quarterly pH pH units Grab Quarterly Quarterly Chloride mg/L Grab Quarterly Quarterly Sodium mg/L Grab Quarterly Quarterly Potassium mg/L Grab Quarterly Quarterly Nitrate as Nitrogen mg/L Grab Quarterly Quarterly Total Dissolved Solids mg/L Grab Quarterly Quarterly Electrical Conductivity umhos/cm Grab Quarterly Quarterly Metals/Inorganics 2, 3 mg/L Grab Annually Annually 1 Groundwater elevation shall be determined based on depth-to-water measurements from a surveyed measuring point elevation on the well. 2 Samples shall be field filtered with a 0.45-micron filter prior to preservation or digestion, as appropriate.