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MONITORING AND REPORTING PROGRAM -5- <br /> SIMPSON INVESTMENT COMPANY <br /> AND SIMPSON PAPER COMPANY <br /> RIPON MILL <br /> SAN JOAQUIN COUNTY <br /> Ground water at each monitoring well shall be analyzed for pH, Electrical Conductivity, <br /> water level (above mean sea level), and turbidity in the field. <br /> Quarterly laboratory tests shall be made on samples from the following wells: OB-1 thru OB- <br /> 25, TH-1, TH-2, TH-4 thru TH-10, M 19c, and PW-4. Parameters to be tested are: Total <br /> Dissolved Solids (TDS), chloride, sulfate, nitrate and sodium. All laboratory parameters <br /> shall be reported in milligrams per liter. <br /> Annual laboratory tests shall be made on samples from the following wells: OB-1 thru 013- <br /> 25, TH-1, TH-2, TH-4 thru TH-10, M10C, and PW-4, PW-5, PW-6, and PW-7. <br /> Parameters to be tested are: electrical conductivity, pH, total dissolved solids, chloride, <br /> sulfate, nitrate, sodium, calcium, magnesium, potassium, bicarbonate, and carbonate. All <br /> laboratory analyses shall be reported in milligrams per liter. <br /> Field and laboratory tests shall be reported in the quarterly monitoring report. Electrical <br /> Conductivity results shall be submitted on a site contour map. All parameters shall be <br /> graphed so as to show historical trends at each well. <br /> Prior to construction, plans and specifications for additional ground water monitoring wells <br /> shall be submitted to Board staff for review and approval. <br /> The Discharger shall implement the above monitoring program as of the date of this Order. <br /> Ordered by W144:— <br /> WILLIAM H. CROOKS, Executive Officer <br /> 25 June 1993 <br /> (Date) <br /> RAE:Isb:7/01/93 <br />