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MONITORING AND REPORTING PROGRAM WASTE MANAGEMENT OF NORTH AMERICA INCORPORATED - 4 -FOOTHILL SANITARY LANDFILL INCORPORATED FOOTHILL SANITARY LANDFILL FACILITY CLASS III.LANDFILL SAN JOAQUIN COUNTY Quarterly samples shall be taken from .these wells for one year and analyzed for each of the parameters and constituents listed under "Ground Water Monitoring" above. Analyses shall account for measurement errors in sampling and analysis. The 'one year' of .sampling shall begin the first quarter after the monitoring wells are installed. The data from these analyses shall be reported to the Board 13.months after the sampling begins. The data will be used by the Board in determining water -quality protection standards for ground water at the site. If subsequent sampling of "background" monitoring wells indicates significant water quality changes due to either seasonal fluctuations or other reasons unrelated to waste management activities at the site, the Discharger may request modification of the water quality protection, standards. Statistical Procedures for Determining Significant Increases The significance of increases in indicator parameters and waste constituents over water quality protection' standards shall be established through the use of a Board approved statistical procedure. � r In reporting the.moni.toring data, the Discharger shall arrange the data in tabular form so thai.the date, the constituents, the concentrations, and the units are readily discernible. The data shall be summarized in such a manner so as to illustrate clearl.y..the compliance with waste discharge requirements. Monthly monitoring reorts shall be submitted to the Board by the 15th day of the month following the month in which the samples were taken. Quarterly, semiannual, and annual monitoring reports shall be submitted to the Board by the 15th day of the month following the calendar quarter in which the samples were taken. The results of any monitoring done more frequently than required at the locations specified herein shall be reported to the Board. A report shall be. submitted to the Board. by 30 January of each.year containing both tabular and graphical summaries of the monitoring data obtained -during the previous year. The report shall include a discussion of compliance with the waste discharge requirements.