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INFORMATION SHEET FOR ORDER NO. -3- LINNE ESTATES,LLC LINNE ESTATES WASTEWATER TREATMENT SYSTEM SAN JOAQUIN COUNTY MW-1 20 326 1280 275 1805 ND (2) ND (2) MW-2 13.2 335 1195 230 1755 ND (2) ND (2) MW-3 14 319.5 1180 310 1730 ND (2) ND (2) NO3 as N denotes nitrate as nitrogen. TDS denotes Total Dissolved Solids. VDS denotes Volatile Dissolved Solids. SC denotes Specific Conductance. TCO denotes Total Coliform Organisms. FCO denotes Fecal Coliform Organisms. Although two groundwater sampling events have been performed, sufficient quarterly groundwater monitoring has not been conducted to establish the most appropriate groundwater limits. Reasonable time is necessary to gather specific information about the WWTF and the site to make informed, appropriate, long-term decisions. This proposed Order, therefore, establishes interim groundwater limitations at a concentration protective of the beneficial uses of groundwater of the State pending the Discharger's completion of certain tasks and provides time schedules to complete specified tasks. The Discharger is expected to identify, implement, and adhere to BPTC as individual practices are reviewed and upgraded in this process. During this period, degradation may occur from certain constituents, but is not authorized to exceed the interim groundwater limitations. Water quality objectives define the least stringent limits that could apply as water quality limitations for groundwater at this location, except where natural background quality exceeds the objective. The values below are concentrations directly from the Basin Plan, or derived indirectly using Basin Plan procedures for implementation of narrative water quality objectives, and must be met to maintain specific beneficial uses of groundwater. They are based on numeric and narrative water quality objectives. Consistent with the Policy for Application of Water Quality Objectives in the Basin Plan, criteria of appropriate agencies have been used to implement narrative water quality objectives. Unless natural background for a constituent proves higher, the interim groundwater quality limitations established in the proposed Order are the most stringent of the values listed for the listed constituents. Constituent Units Value Beneficial Criteria or Justification Use Ammonia mg/L 1.5 MUN 1 Taste and Odor Z Boron mg/L 0.7 AGR' Boron Sensitivity 4 mg/L 1.0 MUNI Calif. Drinking Water Action Level'' Chloride mg/L 106 AGR' Chloride sensitivity on certain crops irrigated via sprinklers 4 142 AGR' Chloride sensitivity on certain crops 4 250 MUNI Recommended Secondary MCL ' MU 500 MUNI Upper Secondary MCL 5 Iron mg/L 0.3 N Secondary MCL 6 Manganese mg/L 0.05 MUNI Secondary MCL 6 Nitrate as N mg/L 10 MUNI Primary MCL Nitrite as N mg/L 1 MUNI Primary MCL Sodium mg/L 69 AGR 3 Sodium sensitivity on certain crops 4 Total Dissolved Solids mg/L 4508 AGR 3 Salt sensitivity 4 500 MUN 1 Recommended Secondary MCL 5 1,000 MUN 1 Recommended Upper MCL 5 Total Coliform MPN/100 <2.2 MUN 1 Basin Plan Organisms ml