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<br />3.0 DATA ANALYSIS PLAN <br />Data wllected under this monitoring plan will be managed and analyzed in accordance with <br />standard Dames & Moore quality control procedures. Data management, analysis, and <br />reporting procedures aze described in the following sections. <br />3.1 DATA MANAGEMENT <br />All data generated by the sampling plan will be managed in both hard copy and electronic <br />format by qualified data management specialists. Site location, date and time of sampling, <br />sample processing procedures and requested analysis, and field measurements will be <br />documented on sampling forms in the field at the time of data collection. Instrument <br />calibrations will be documented in a bound field notebook. All field data will be entered into <br />a computer database following the sampling episode. Data entry will be checked and <br />documented on a Dames & Moore QA/QC Cover Sheet for each sampling round. <br />A computer database will be developed to manage both field and sample analytical results for <br />the data collected under the sampling plan. All laboratory data will be transferred <br />electronically and imported directly into the database with no manual data entry. A <br />standardized ASCII data file will be developed to transfer data through correspondence with <br />the laboratory. Electronic data transfer will ensure accurate and expedient data management <br />for the project. Quality assurance checks will be performed for each data transfer to validate <br />all data. Hard copies of all field notes and laboratory data reports will also be kept on file for <br />the program. <br />3.2 DATA ANALYSIS <br />Data trend analysis will be performed to assess seasonal water quality and flow changes at each <br />monitored location. Contiguous stations will be evaluated with respect to longitudinal changes <br />in both water quality and flow. A hydrologic water balance will be developed for the pipeline <br />between the mine and the pond to assess the integrity of the water collection and conveyance <br />system. Differences in water chemistry between the pond influent stream, the Outfa11001 and <br />002, and the pond outlet works will be evaluated to assess the effects of residence time on <br />pond water quality. Point discharges within the system will be evaluated with respect to pond <br />capacity and evaporation rates to develop conservative storage estimates and evaluate feasible <br />water management strategies for the system. <br />18 <br />