Laserfiche WebLink
preservative shall not be added in the field. All sample containers will be clearly labeled with the well <br />identification, date and time of sample collection, parameters to be analyzed, filtered or unfiltered, <br />preservatives, and the samplers' initials. Samples will be kept cool from the time of collection to receipt <br />by the analytical laboratory. Chain of custody forms and custody seals provided by the laboratory will be <br />used for all samples shipped to the laboratory. Samples will be stored on ice for shipment to the <br />laboratory via express carrier. <br />1.1.6 Groundwater Analytical Suite <br />Groundwater will be monitored for field parameters and samples will be sent to the laboratory for analysis <br />of laboratory parameters. Parameters to be measured in the field and recorded on the field sampling <br />record will include water level, temperature, pH, electrical conductivity, and dissolved oxygen (Table 2). <br />Laboratory parameters for groundwater samples include 37 analytes listed in Table 3. The analytical suite <br />for the project has been developed based on Colorado agricultural groundwater standards, and EPA <br />drinking water standards. The analytical suite will be reviewed annually, and may be modified to add or <br />exclude constituents, as necessary to meet the goals of the monitoring program. <br />It is anticipated that after five quarters of sampling, subsequent annual and semi - annual sampling will <br />select target analytes that represent mobile constituents that are directly related to uranium ore deposits. <br />This approach will reduce laboratory costs and still provide accurate indications of changes in water <br />quality due to mining activities. <br />Table 2: Field Parameters for Groundwater Monitoring <br />Parameter Precision/Units <br />Water Level 0.01 ft <br />Temperature 0.1 °C <br />pH 0.01 S.U. <br />Electrical Conductivity 1 µmhos /cm <br />Dissolved Oxygen 0.01 mg/L, 1% <br />