2023-02-24_PERMIT FILE - M2022013

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AWES, LLC • Raise the bailer by grasping a section of cord, using each hand alternately. This bailer lift method will assure that the bailer cord will not come into contact with the ground or other potentially contaminated surfaces. Sampling Instructions for obtaining samples for parameters are reviewed with the laboratory coordinator to insure that proper preservation and filtering requirements are met. • Appropriate sample containers will be obtained from the contract laboratory. After samples are collected, they will be put on ice in coolers (4°C). Care will be taken to prevent breakage during transportation or shipment. • Samples collected by bailing will be poured directly into sample containers from bailers. The sample should be poured slowly to minimize air entrapment into the sample bottle. During collection, bailers will not be allowed to contact the sample containers. • Upon completion of sampling a chain-of-custody log will be initiated. Chain-of-custody records will include the following information: project name and number, shipped by, shipped sampling point, location, field ID number, date, time, sample type, number of containers, analysis required and sampler's signature. The samples and chain-of-custody will be delivered to the laboratory. Upon arrival at the laboratory the samples will be checked in by the appropriate laboratory personnel. Laboratory identification numbers will be noted on the chain-of-custody record. Upon completion of the laboratory analysis, the completed chain-of-custody record will be returned to the project manager. Field Cleaning Procedures For all equipment to be reused in the field,the following cleaning procedures must be followed: • Disassemble the equipment to the extent practical. • Wash the equipment with distilled water and laboratory-grade detergent. • Rinse with distilled water until all detergent is removed. • Rinse the equipment with isopropyl or methanol, making sure all surfaces, inside and out, are rinsed. • Triple rinse the equipment with distilled water. Laboratory Selection The project manager should consider the following factors when selecting a laboratory: • Capabilities (facilities, personnel, instrumentation), including: • Participation in interlaboratory studies (e.g., EPA or other Federal or State agency sponsored analytical programs); • Certifications (e.g., Federal or State); • References (e.g. other clients); Experience. • Turnaround time; and • Technical input(e.g., recommendations on analytical procedures).