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WASTE DISCHARGE REQUIREMENTS ORDER R5-2013-0028 -10- DELICATO VINEYARDS, INC. DELICATO FAMILY VINEYARDS SAN JOAQUIN COUNTY Constituent Analytical Result (mg/L, except as noted) Chloride 14 Nitrate as NO3 52.2 Specific Conductance Z 502 Total Dissolved Solids 320 'pmhos/cm 35. Supplemental irrigation water is provided by the South San Joaquin Irrigation District (SSJID), as needed. Two samples of supplemental irrigation water from the SSJID were collected on 20 August 2012. The analytical results are summarized below for the two different sampling locations. Analytical Result(mg/L) Constituent Sample No. 1 Sample No. 2 Fixed Dissolved Solids (FDS) 20 20 Total Dissolved Solids (TDS) 60 40 Total Suspended Solids (TSS) 5.0 5.0 36. Wastewater will be applied to the LAAs year-round as needed to support vineyard and seasonal crops. As shown on Attachment C, water will be released from the aeration ponds and from supplemental irrigation water storage basins through separate pipes to the various LAAs. Blending of wastewater and supplemental irrigation will typically occur in the discharge pipe. Application rates and frequencies will vary during the year depending on weather and crop conditions. 37. Cutback irrigation will be used to apply wastewater and SSJID supplemental irrigation water to the cropped LAAs using a series of narrow checks. Cutback irrigation is a variant of flood irrigation that minimizes runoff and potential ponding by matching the inflow rate with the average infiltration capacity of the soil. Cutback irrigation is similar to tailwater recovery systems where irrigation efficiency is improved by reducing runoff losses. 38. Vineyard LAAs will receive wastewater and supplemental irrigation water through a combination of furrow and drip irrigation. Some vineyard LAAs may alternatively receive irrigation water from the on-site agricultural supply well via drip irrigation. 39. Furrows and checks will be used to promote the even application of wastewater within the LAAs. Elevations of the new LAAs are lower than the surrounding access roads, which will prevent off-site runoff. Regular inspections of the LAAs will be performed to identify areas that need to be regraded or requiring maintenance.