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Level <br />Standard Operating Procedure: <br />Water-Level Measurement <br />1. Scope and Application <br />SOP: Water <br />The objective of this Standard Operating Procedure (SOP) is to describe the procedure to measure and record <br />groundwater elevations. Water levels may be measured using an electronic water-level indicator or a pressure <br />transducer from established reference points (e.g, top of casing). Reference points will be surveyed to evaluate <br />their elevations relative to mean sea level (msl). This SOP describes the equipment, field procedures, materials, <br />and documentation procedures necessary to measure and record groundwater elevations using the <br />aforementioned equipment. <br />This SOP may be varied or changed, as required, depending on site conditions, equipment limitations, or <br />limitations imposed by the procedure. The ultimate procedure employed will be documented in the project <br />work plans or reports. <br />II. Personnel Qualifications <br />Field sampling personnel will have current health and safety training, including appropriate MSIIA training <br />under Public Law 95-164, site supervisor training, and site-specific training, as needed. In addition, field <br />sampling personnel will be versed in the relevant SOPS and possess the required skills and experience necessary <br />to successfully complete the desired Field work. <br />III. Equipment List <br />The following materials, as required, shall be available during water-level measurements: <br />• Appropriate personal protective equipment (PPE); <br />• Equipment decontamination supplies (see Field Sampling Equipment Decontamination SOP); <br />• Electronic water-level indicator; <br />• Non-phosphate laboratory soap (Alconox or equivalent); <br />• Deionized/distilled water; <br />• 150-foot measuring tape; <br />• Solvent (nitric acid) rinse; <br />• Portable containers; <br />• Hacksaw; <br />• Pliers; <br />• Monitoring well keys; <br />• Field logbook; and <br />• Indelible ink pen. <br />IV. Cautions <br />Aquifers stressed by intermittent pumping and aquifers recharged from confined or semi-confined aquifers may <br />demonstrate significant water-level fluctuations. <br />ti~sros <br />SOPo2-Water Level Measurement-Miriedm <br />