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MONITORING AND REPORTING PROGRAM NO. R5-2014-0006 <br />FORWARD INC. AND REPUBLIC SERVICES INC. <br />FORWARD CLASS II LANDFILL <br />SAN JOAQUIN COUNTY <br />19 <br />2. Monitoring Parameters <br /> <br />Monitoring parameters are a select group of constituents that are monitored <br />during each monitoring event that are the waste constituents, reaction products, <br />hazardous constituents, and physical parameters that provide a reliable <br />indication of a release from a waste management unit. The monitoring <br />parameters for all waste management units are those listed in Tables I through <br />V for the specified monitored medium. <br /> <br /> <br />3. Constituents of Concern (COCs) <br /> <br /> The COCs include a larger group of waste constituents, their reaction products, <br />and hazardous constituents that are reasonably expected to be in or derived <br />from waste contained in the waste management unit, and are required to be <br />monitored every five years [Title 27, sections 20395 and 20420(g)]. The COCs <br />for all waste management units at the facility are those listed in Tables I <br />through IV for the specified monitored medium, and Table VI. The Discharger <br />shall monitor all COCs every five years, or more frequently as required in <br />accordance with a Corrective Action Program. The last 5-year COC report was <br />submitted to the Central Valley Water Board in the 2008, Third Quarter <br />Monitoring Report and 5-year COCs are due to be monitored again in the 2013 <br />First Quarter Monitoring Report. <br /> <br />4. Concentration Limits <br /> <br /> For a naturally occurring constituent of concern, the concentration limit for each <br />constituent of concern shall be determined as follows: <br /> <br /> a. By calculation in accordance with a statistical method pursuant to <br />Title 27, section 20415(e)(8); or <br /> <br /> b. By an alternate statistical method meeting the requirements of Title 27, <br />section 20415(e)(8)(E). <br /> <br /> The methods for calculating concentration limits were included in the 2011 <br />Concentration Limit Update Report. The approved method for groundwater <br />wells uses intra-well tolerance limits and the method for surface water samples <br />uses inter-station tolerance limits. All tolerance limits are calculated at 95% <br />confidence and a Type I error rate of alpha – 0.01 is proposed for surface water <br />samples. <br /> <br /> <br /> <br />