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MONITORING AND REPOR11eG PROGRAM -3- CITY OF STOCKTON AUSTIN ROAD LANDFILL CLASS III LANDFILLS SAN JOAQUIN COUNTY WATER QUALITY PROTECTION STANDARDS Standards for Surface Waters Monthly surface water samples shall be taken from the locations shown on Attachment B for one year and analyzed for each of the parameters and con- stituents listed under "SURFACE WATER MONITORING" above. Analyses shall account for measurement errors in sampling and analysis. Data from these analyses shall be reported to the Board within thirteen months of-the effective date of this Order for use by the Board in determining water quality protection standards for surface waters at the site. If subsequent upstream surface water sampling 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 modifica- tion of these water quality protection standards. Standards for Ground Water Monthly samples shall be taken from "background" monitoring wells for one year and analyzed for: Report in Parameter/Constituent Units of Specific Conductance (field) umhos/cm pH (field) pH Units Sulfate mg/l Chloride mg/l Nitrate (as N) mg/l Alkalinity mg/l Carbonate mq/l Bicarbonate mg/l Dissolved Iron mg/l Manganese mg/l Total Organic Carbon mg/l 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. Data from these analyses shall be reported to the Board within thirteen months of the effective date of this Order for use by the Board in determining water quality protection standards for ground water at the site.