WORK PLANS - Laserfiche WebLink

Home Browse Search

personnel will note the condition of the well upon arrival and inspection.If the well casing is damaged and there are anomalies in the calculated water level at the well, then the casing damage may indicate compromised sample quality. Field documentation includes completed calibration records, low flow sampling data sheets, daily field logs and other field notes deemed relevant. Low flow data and calibration forms are provided with this SOP. The attached field sheets include the following information: • Job, site, date and sampler; • Well identification and description; • Reference elevation and depth to water; • Casing volume calculation; • Depth of pump intake during purging and sampling; • Check list of items for pre-sampling well condition inspection; • Equipment used(field probes, tubing, model and serial numbers); • Purge rate, field parameters (temperature, conductivity, DO, ORP, pH, and, if specified,turbidity) and depth to water recorded every 5 minutes; • Sampling parameters; • Stabilized field parameters; • Identification, time, container types, preservatives, and analytical methods for samples; and, • Space for comments. Chain-of-Custody (COC)Records COC records will be used to document sample collection and shipment to the laboratory for analysis.A COC record will accompany each sample shipment in order to identify the contents of each shipment and maintain the custodial integrity of the samples. A sample will be considered to be in someone's custody if it is either in someone's physical possession, in someone's view, locked up, or kept in a secured area that is restricted to authorized personnel. Until receipt by the laboratory, the custody of the samples will be the responsibility of the sample collector or courier. After placement of each sample in its protective plastic bag, the bag will be sealed.