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4.4. Sampling Procedure <br /> The following protocol will be used for the collection and testing of water samples by field <br /> personnel. This procedure was developed using the SESCPROC-301-R3: Groundwater <br /> Sampling Operating Procedure published by the United States Environmental Protection <br /> Agency (EPA). <br /> General Precautions <br /> 1) Proper safety precautions must be observed when collecting groundwater sampling. <br /> This procedure should be enacted in tandem with the judgement of a competent and <br /> experienced professional. Proper Personal Protective Equipment (PPE) should be worn <br /> depending on the conditions of the site and materials/chemicals being handled. Potential <br /> hazards of the site should be identified prior to sampling, particularly when sampling is <br /> occurring on an active mine site. All chemicals will be provided with Material Safety Data <br /> Sheets. <br /> Prior to Sampling <br /> 1) Laboratory Selection & Bottle Procurement: Specific bottles will be ordered from an <br /> appropriate and certified analytical laboratory which will be used for collecting water <br /> samples. The bottles are retrieved from the lab cleaned and preconditioned. The bottles <br /> will either already be prepared with the preservative(s), or the preservatives will be <br /> provided from the laboratory. <br /> 2) Decontamination: Field sampling equipment will be cleaned and calibrated prior to <br /> sampling. This is important to get accurate data and prevent contamination of samples. <br /> The calibration of the equipment will be performed as described in the equipment <br /> manual. Decontamination of equipment will be achieved in accordance with the <br /> SESDPROC-205 Field Equipment Cleaning and Decontamination procedure published <br /> by the EPA. The procedures for the equipment to be used are as follows: <br /> a. Well Sounder or Tape: <br /> i. Wash with Liquinox or other appropriate equipment detergent and tap <br /> water. <br /> ii. Rinse with tap water. <br /> iii. Rinse with deionized water. <br /> b. Pump and Wetted Portion of Tubing or Hose: <br /> i. Disconnect power and wash exterior of pump and hose with Liquinox or <br /> other appropriate equipment detergent and tap water. <br /> ii. Rinse with tap water. <br /> iii. Rinse with deionized water. <br /> iv. Keep clean between uses. <br /> North Hangs Mine GW Monitoring <br /> Plan 10 U Lewicki& Associates <br /> December 2024 <br />