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i <br /> I <br /> STANDARD OPERATING PROCEDURE FOR <br /> GROUNDWATER MONITORING WELL SAMPLING <br /> PURPOSE <br /> The purpose of this standard operating procedure is to delineate protocols for the collection of l <br /> groundwater samples from monitoring wells using normal and slow purging technique. <br /> FIELD SUPPLIES <br /> • Specific Conductivity meter-or YSI 3800 <br /> • Thermometer(optional)-'or YSI 3800 <br /> • pH meter or YSI 3800 <br /> • Flow-through-cell,if dissolved oxygen (DO) and oxidation reduction potential(ORP) <br /> measurements are needed. <br /> • Water-level indicator <br /> • Peristaltic,bladder, or submersible positive-displacement pump with adjustable discharge <br /> rate <br /> Sample bottles,labels,sample cooler,ice,chain-of-custody forms <br /> • Logbook or Field Investigation Daily Forms and Groundwater Sampling Forms <br /> • Teflon or teflon-lined polyethylene tubing and T fittings, hose clamps <br /> • Photoionization Detector(PID)Organic.Vapor Analyzer <br /> • PPE <br /> • Graduated cylinders <br /> • Generator <br /> • - Laboratory contact name and number <br /> • List of wells with historic COC concentrations. <br /> • Decontamination equipment (buckets,non-phosphate detergent,and distilled water) <br /> • Calibration fluids <br /> i <br /> gw sampling.SOP . Page l of 5 February 2005 f <br /> I <br />