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Rim Schwab <br /> January 28, 1992 <br /> Page 8 <br /> Response: <br /> The text has been revised to indicate that quarterly ground water <br /> reports will be forwarded to the Board. <br /> Comment 25: <br /> "Section III-3 .3 . The operator is required to address monitoring <br /> of off-site structures for landfill gas, including method and <br /> frequency to ensure detection of the presence of landfill gas <br /> migrating beyond the landfill property boundary (14 CCR <br /> 17783 .3 (2) (C) & (D) ) . " <br /> Response: <br /> 14 CCR 17783 .3 (2) states that the monitoring network shall be <br /> designed to account for the following specific site <br /> characteristics, and potential migration pathways or barriers, <br /> including, but not limited to: <br /> (A) local soil and rock conditions; <br /> (B) hydrogeological conditions at the facility; <br /> (C) locations of buildings and structures relative to the waste <br /> deposit area; <br /> (D) adjacent land use, and inhabitable structures within 1000 feet <br /> of the landfill property boundary; <br /> (E) man-made pathways, such as underground construction; and <br /> (F) the nature and age of waste and its potential to generate <br /> landfill gas. <br /> The perimeter monitoring network has been designed to account for <br /> these factors and was approved by the California Integrated Waste <br /> Management Board prior to installation. The wells were spaced <br /> closer together on the west boundary by the labor camp to account <br /> for those structures and to ensure that landfill gas migration <br /> would be detected. <br /> Comment 26: <br /> "Sections III-5.5 and 5.6 of the plan must describe a program to <br /> inspect and maintain the gas and ground water monitoring networks <br /> to insure their optimum performance throughout the postclosure <br /> period (14 CCR 18264.3 (a) (3) (E) & (F) ) ." <br />