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GeosyntecO <br /> consultants <br /> 3. SAMPLE HANDLING AND CUSTODY REQUIREMENTS <br /> Collection of environmental samples of high integrity is important to the quality of <br /> chemical data to be generated. To this end, strict field procedures have been developed <br /> that will be employed for the project. Detailed field activities for collecting and analyzing <br /> samples are described in the Work Plan. Project field procedures to be used during these <br /> activities are provided in the Sampling and Analysis Plan section of the Work Plan. A <br /> summary of criteria to be met during the sample collection process to ensure that a <br /> representative sample is properly collected and transported to the laboratory, including <br /> sample containers, field preservation and holding times is provided in Table E-1. <br /> Chain of custody procedures will be strictly adhered to during sample collection, <br /> transportation, and laboratory handling to assure the integrity of the samples. Improper <br /> sample and data handling and inadequate chain of custody procedures affect the <br /> credibility and acceptability of analytical results,regardless of their accuracy or precision. <br /> Chain of custody documentation will document the processing of the sample from the <br /> time of collection to the time of analysis. Samples will be contained and preserved in <br /> accordance with the instructions provided in Table E-1. <br /> 3.1 Sample Nomenclature <br /> This section describes the sample nomenclature for groundwater collected during the field <br /> activities described in the Work Plan. These protocols are to be used on samples labels <br /> and chain of custody forms. <br /> Samples will be labeled using unique sample designations based on the sampling location <br /> code and the date collected. Groundwater samples will be labeled with the well number <br /> followed by the date collected in a YYYYMMDD(Year,Month,Day)format. Examples <br /> of the sample nomenclature to be utilized during this investigation are provided below. <br /> Example (Primary Groundwater Sample): <br /> • A groundwater sample collected from groundwater monitoring well W-001 on a <br /> given sampling day (using 15 September 2025) would be labeled as follows: <br /> W-001-20250915. <br /> Quality control samples collected during this investigation will include duplicate <br /> groundwater samples, equipment blanks, and trip blanks. <br /> Quality Assurance Project Plan 5 30 April 2025 <br />