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M <br /> Working to Restore Nature <br /> FIELD PROCEDURES <br /> -e_Safety Plan <br /> This plan describes the safety requirements for field work performed at the site The site <br /> safety plan is applicable to personnel of RESNA Industries who perform the field work A <br /> copy of the site safety plan is available for reference by appropriate parties during the work <br /> The onsite representative of RESNA Industries acts as the Site Safety Officer <br /> Groundwater Samnlin1 <br /> The static water level in each well was measured to the nearest 0 01 foot with a Solinst <br /> electric water-level sounder cleaned with a laboratory-grade detergent and deionized water <br /> before use in each well A clean bailer was used to obtain a sample from the surface of the <br /> water in the well for subjective analysis of hydrocarbons The sample was retrieved and <br /> examined for floating product, sheen, color, and clarity <br /> Approximately 3 well volumes (approximately 50 gallons) were purged from each well with <br /> a stainless-steel electrical submersible pump to allow sampling of representative formation <br /> water The pump, cables, and hoses were cleaned with a laboratory-grade detergent and <br /> t� water before use 1n each well The wells were purged until pH, temperature, and electrical <br /> conductivity of the water stabilized, as measured by portable meters calibrated to a standard <br /> buffer and conductivity standard The water level was allowed to recover to at least 80 <br /> percent of the initial water level A sample of the formation water then was collected from <br /> the surface of the water :n each of the wells with the Teflon bailer and slowly transferred <br /> to laboratory-cleaned sample containers The recovered fluids from sampling in each well <br /> were directed into type 17-E, steel, 55-gallon liquid waste drums approved for this use by <br /> the Department of Transportation. <br /> Hydrochloric acid (or other appropriate chemical) was added to the sample vials as a <br /> preservative A sample of the formation water then was collected from the surface of the <br /> water in each of the wells with disposable clean Teflon bailer and slowly transferred to <br /> laboratory-cleaned sample containers <br /> Sample Labeling and_Dandling. <br /> 1 Water samples were preserved in laboratory-cleaned, 40-milliliter glass vials that contained <br /> concentrated hydrochloric acid as a preservative The water samples were sealed with <br /> Teflon-lined lids to eliminate air bubbles The sample containers were labeled in the field <br /> with the site identification, monitoring well number and depth, and date, and promptly <br /> placed in iced storage for transport to the laboratory The technician or geologist initiated <br /> 1 <br /> 02011gol/123020-1 <br /> 1 <br />