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REVISED MONITORING AND REP 'ING PROGRAM ORDER NO. R5-2008-P"C -4- <br />HJ BAKER & BRO. INC., MARTIN C,. tATING PARTNERSHIP, THE PORT 0. DCKTON, <br />AND METROPOLITAN STEVEDORE <br />MOLTEN SULFUR PROCESSING PLANTS <br />SAN JOAQUIN COUNTY <br />The Port's Facility—Specific Monitoring <br />The Port owns a tunnel, now out of service, beneath Baker's prill stockpile area (see Attachment <br />A for the tunnel location). Formerly, the tunnel included a conveyor belt for moving sulfur prill <br />from Baker's stockpile area to a wharf. The Port cleaned the tunnel system prior to taking it out <br />of service. Historically, water has seeped into the tunnel. The Port shall monitor its tunnel water <br />for the parameters shown in Table 3. Tunnel water samples must be collected at a point along <br />the tunnel where any standing water is deepest along the extent of the tunnel. Tunnel water <br />analytical results must be reported semiannually for the parameters and frequencies shown <br />Table 3, below. <br />Table 3 <br />The Port Tunnel Water Monitoring <br />Field Parameters Units Monitoring Frequency <br />Temperature Semiannually <br />Specific Conductance umhos/cm <br />pH SU <br />Monitoring Parameters <br />Sulfur, total (EPA 200.7) mg/L <br />Total Dissolved Solids (EPA 160.1) mg/L <br />Sulfate (EPA 300 Series) mg/L <br />Major Anions (See Table 6) mg/L <br />Major Cations (See Table 6) mg/L <br />Once during the rainy season <br />during a storm event. <br />Discharger's Groundwater Monitoring <br />Sulfur operations have impacted groundwater. Therefore, the Discharger must continue to <br />operate and maintain its groundwater monitoring system in accordance with this revised MRP <br />as approved by the Executive Officer. Monitoring must be reported semiannually and annually. <br />The Discharger shall collect, preserve, and transport groundwater samples in accordance with <br />the approved Sample Collection and Analysis Plan and this revised MRP. The groundwater <br />monitoring wells include MW-1s, MW-2s, MW-3s, MW-4p, MW-5, MW-6, MW-7, MW-8, MW-9, <br />MW-10, MW-11, MW-12, MW-13p, MW-13s, MW-14, and any additional wells installed <br />thereafter. <br />The groundwater gradient and flow direction shall be determined quarterly and reported <br />semiannually. Groundwater samples must be collected, analyzed, and reported for the <br />monitoring parameters in accordance with the methods and frequency specified in Table 4.