COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

Geosyntec consultants 3. SAMPLE HANDLING AND CUSTODY REQUIREMENTS Collection of environmental samples of high integrity is important to the quality of chemical data to be generated. To this end, strict field procedures have been developed that will be employed at various locations during phases of the field investigation. Detailed field activities for collecting and analyzing samples are described in the Work Plan. Project field procedures to be used during these activities are provided in the Work Plan. A summary of criteria to be met during the sample collection process to ensure that a representative sample is properly collected and transported to the laboratory, such as sample container types,preservation,and holding time requirements, is provided in Table C-1. General sample identification, labeling, handling,and custody requirements are provided in the Work Plan. COC procedures will be strictly adhered to during sample collection, transportation, and laboratory handling to assure the integrity of the samples. Improper sample and data handling and inadequate COC procedures affect the credibility and acceptability of analytical results, regardless of their accuracy or precision. COC documentation will document the processing of the sample from the time of collection to the time of analysis. Samples will be contained and preserved in accordance with the instructions provided in Table C-1. 3.1 Sample Packaging and Handling As samples are collected in the field, they will be handled and placed into containers as specified by the laboratory. Each sample label will specify the analyses to be completed for that particular container(i.e. volatile organic analysis [VOA] vials to be analyzed for VOCs by U. S. EPA Method 82606 will be labeled as such, etc.). A list of appropriate analyses for each sample will be included on a completed sample COC form for the laboratory. The COCs will include the sample identification, location, date and time of the sampling, number and type of containers, and a list of analyses to be performed. Sample documentation will be completed in the field, and the COCs will accompany the samples through the transportation and analysis. Special care will be taken to pack containers to minimize breakage. Quality Assurance Project Plan 4 7 December 2020