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MONITORING AND REPORTING PROGRAM FOR CITY OF STOCKTON AUSTIN ROAD LANDFILL FACILITY CLASS III LANDFILL SAN JOAQUIN COUNTY Ij -,0110 X01 0 U413MUZU-1 �' The Water Quality Protection Standard (Standard) consists of the following elements: Constituents of Concern; Concentration Limits; Monitoring Points; Points of Compliance; and Compliance Period. Each of these is described as follows: 1. Constituents of Concern The'COC list' (fist of Constituents of Concern required under 23 CCR 2550.3) shall include all constituents listed in Tables 1, 11, and IR (above), the Waste Discharge Requirements Order No. 96-175 and all constituents fisted in Attachment D. The Constituents of Concern shall be for water -bearing media (i.e., ground water and surface water). The Discharger shall monitor all COCs every five years under the detection monitoring program, or more frequently as required under corrective action monitoring. For each monitoring period, the Discharger shall determine whether there is statistically significant evidence of a release from the landfill and whether the landfill is in compliance with the Water Quality Protection Standard using procedures specified in Section 2550.7 of Chapter 15. 2. Concentration Limits The Concentration Limit for any given Constituent of Concern or Monitoring Parameter in a given monitored medium (i.e., the uppermost aquifer) at a landfill shall be as follows, and shall be used as the basis of comparison with data from the Monitoring Points in that monitored medium: a. The background value established in the Monitoring and Reporting Program for that constituent and medium; b. The constituent's background value, established anew during each Reporting Period using only data from all samples collected during that Reporting Period from the Background Monitoring Points for that monitored medium. Either: