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Monitoring Frequency <br /> Groundwater will be monitored on a quarterly basis with one sample from each <br /> monitoring location being collected and analyzed once per calendar quarter. An <br /> attempt will be made to sample during anticipated high water table conditions (spring) <br /> and low water table conditions (late summer) during the year. Quarterly sampling is <br /> proposed for one year (four quarters) after which it will be reduced to semi-annual <br /> sampling, once during spring and once during autumn. Sampling during these time <br /> frames (spring and autumn) should provide information on the highest concentration of <br /> constituents in the groundwater (autumn low flow, low solvent volume) as well as <br /> lowest concentration on constituents in the groundwater (spring high flow, greatest <br /> solvent volume). <br /> Sampling Parameters <br /> The following parameters will be sampled and analyzed for each groundwater sample <br /> during the first year: <br /> PH Electrical Conductivity Total Dissolved Solids <br /> Major cations Alkalinity WAD CN <br /> Major anions Hardness Nitrate <br /> SOq Chloride Nitrite <br /> Ammonia Aluminum Arsenic <br /> Barium Boron Cadmium <br /> Chromium Iron Lead <br /> Manganese Mercury Molybdenum <br /> Nickel Selenium Silver <br /> Sodium Zinc <br /> After completion of the first four quarters of sampling, the chemical analysis list will <br /> be modified to best reflect those constituents that characterize the source and movement <br /> of contaminants attributable to the mill. <br /> Analysis will be undertaken by a competent laboratory which is familiar with analysis <br /> for the above constituents. Analysis methods and detection limits will be in accordance <br /> with industry and regulatory agency standards. <br /> Monitoring Site Locations <br /> The surface water and groundwater monitoring site locations are illustrated on Figure <br /> 1. <br /> -4- <br />