Laserfiche WebLink
Each cooler will be taped shut with packing tape to ensure that it does not open during transit. The <br />shipping label will be clearly displayed on the outside of each cooler. A completed chain of custody <br />form will accompany each cooler, sealed in a plastic bag inside the cooler. Delivery of samples will <br />be coordinated with the analytical laboratory's work schedule to ensure that the samples can be <br />properly received, logged in, and analyzed within the specified holding times. <br />The analytical laboratory will receive samples in a designated control area of the laboratory. The <br />sample custodian will unpack the samples and check the shipping container to make sure that there <br />are no broken bottles and that the samples remained cool during shipping. The sample custodian <br />will verify the arrival of samples against the COC record. <br />In addition, the sample custodian will make sure that the proper containers and preservatives for the <br />parameters of interest have been used. The sample custodian will immediately notify the Brown and <br />Caldwell (or other DMG- approved outside consultant) project manager or his /her designate of any <br />problems that may affect the sample integrity or any discrepancies between the samples and the <br />COC record. <br />The laboratory will be instructed to retain samples until written authorization to discard them is given <br />by Brown and Caldwell (or other DMG - approved outside consultant). This allows for the opportunity <br />to reanalyze samples if initial results seem anomalous and holding times have not been exceeded. <br />5.5 Quality Assurance and Quality Control <br />QA /QC measures promote accuracy and precision of the collected data. Field QA /QC includes <br />cleaning of sampling equipment, using appropriate sample containers, and maintaining COC <br />procedures. QA /QC measures are also followed by the contracted laboratories and include equipment <br />blanks and spikes. QA /QC results will be provided by the laboratories. <br />5.5.1 Field Duplicates. Field duplicates of groundwater samples will be collected for analysis <br />at one station during each sampling event. Field duplicates will be labeled as separate samples to avoid <br />confusion and to provide an unbiased blind evaluation. Duplicate QC samples will be identified as D1, <br />D2, and so on, with the number designating the order in which duplicate samples were collected and <br />will not represent the sample site location (for example, D1 would not designate a duplicate sample <br />collected at site MW -001). Designation of the sampling location where the duplicate sample was taken <br />will be recorded in the bound field notebook for reference when reviewing sample results. Although <br />the laboratory will know the sample is a duplicate, it will not know what sample has been duplicated and <br />will have no basis upon which to modify results. <br />5.5.2 Data Evaluation Procedures. Data evaluation consists of reviewing the data package <br />received from the analytical laboratories to ensure the package is complete and consistent. The <br />following data review criteria will be completed by Brown and Caldwell (or other DMG- approved <br />outside consultant) for the groundwater samples: <br />Step 1 <br />1. Review the data set for completeness. Confirm that all sample sites and constituents <br />are reported or that there is an explanation for a missing data point. <br />P: \Dan \GEN \F- S -P -T\ 22421 \Permimng \Stipulation Response \Groundwater Sampling Plan \ Condition 1 Groundwater Sampling Plan 3_24_03.doc <br />11 <br />