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TABLE 1 <br /> First Semiannual 2014 Leachate Field Measurements <br /> North County Recycling Center and Sanitary Landfill <br /> Volume Pumped Average Flow Rate <br /> Area I E.C. hos/cm) I <br /> January 6.26 3,817 48 <br /> February 6.54 4,181 965 31 <br /> March 6.47 3,677 17,405 497 <br /> April 6.63 3,279 8,870 370 <br /> May 6.26 4,107 6,550 273 <br /> June 6.37 3,763 9,070 221 <br /> Average leachate collection rate: 232 <br /> Volume Pumped Average Flow Rate <br /> Area 3 pH E.C. (pmhos/cm.)...............__..._._(g#Ions)_ (gal/day) <br /> January 6.57 2,970 113 5 <br /> February 6.55 2,408 3,610 116 <br /> March 6.71 2,153 9,590 274 <br /> April 6.87 2,039 9,525 397 <br /> ................_­.............—.— <br /> ...... May 6.87 2,267 24.0___.......... 10 <br /> June 6.84 2,425 10,263 250 <br /> ........... .............**"** <br /> Average leachate collection rate: 175 <br /> 1 --_ _-_ .................. ..................... <br /> __ <br /> Volume Pumped Average Flow Rate <br /> Area 4__.._.__.__pH E.C. (pmhos/cm) <br /> --January 6.84. 2,642 2,137 97 <br /> ........... <br /> February 6.62 2,693 7,501 242 <br /> March 6.63 2,033 6,988 200 <br /> April 6.92 2,278 255 11 <br /> May 6.92 2,278 0 (no pumping due to 0 (no pumping due to <br /> sensor failures__—._ sensor failure) <br /> June 6.11 2,318 9,442 230 <br /> Average leachate collection rate: 156 <br /> All leachate was successfully returned to the refuse at least 40 feet above the LCRS, allowing dryer <br /> refuse to absorb the leachate. <br /> A comparison of the leachate monitoring data to groundwater monitoring data shows that leachate <br /> generally contains significantly higher TDS, Electrical Conductivity, and Chloride than groundwater. <br /> Leachate is also slightly more acidic than groundwater. <br /> North County RC&SL Public Works/Solid Waste <br /> 151 Semiannual 2014 Groundwater Monitoring 7 County of San Joaquin—July 31,2014 <br />