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MONITORING AND REPORTING PROGRAM ORDER NO. R5-2009-0049 -8- SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS HARNEY LANE LANDFILL SAN JOAQUIN COUNTY Corrective Action Monitorin Table E.3.c. Cor g Schedule Parameter Units Frequency Data Analysis Field Parameters Elevation Feet MSL Quarterly --- pH pH units Semiannually Statistical Temperature 0C, OF Semiannually --- Turbidity NTU Semiannually --- Dissolved Oxygen (DO) % Semiannually --- Redox potential millivolts Semiannually --- Specific Conductance pMhos/cm Semiannually Statistical Monitoring Parameters VOCs' lag/L Semiannually Nonstatistical General Minerals.- Chloride inerals:Chloride mg/L Semiannually . Statistical TDS mg/L Semiannually Statistical Total Alkalinity mg/L Semiannually Statistical Total Hardness mg/L Semiannually Statistical Chemical Oxygen mg/L Semiannually Statistical Demand (COD) Major Anions' mg/L Annually Statistical Major Cations' mg/L Annually Statistical COCs1.2 See Table C Every 5 years3 Statistical/Nonstatistical 1. See Tables G.1 and G.2 for full list of constituents and EPA test methods. 2. COC monitoring under this Order shall be conducted by 15 December 2009 and at least every five years thereafter. 3. More frequent monitoring may be required if concentration limits not yet developed. See Section E.2.c. d. Data Evaluation Corrective Action monitoring data evaluation shall include the following: i. Background Data - Developing/updating CLs for monitoring parameters and COCs, as appropriate. il. Nature and Extent of Release - Comparing monitoring data with CLs to characterize the release or identify a new release. - Water chemistry analysis by iomb-alance a-nd an-appropTrate graphical methods (e.g., Piper diagram, Trilinear plot, Stiff diagram)