Laserfiche WebLink
''Y"��''" 5- ��� "N e9(' ,�,.' ��t � �� dr_ :'Y� � � � '�"_ � ry��`�•�"'- rtiS. rv•-` 3: � y��? J �n�'�'� A <br /> u <br /> 3,y <br /> i <br /> FIELD PROCEDURES <br /> Site Safetv Plan <br /> This plan describes the safety requirements for purging and sampling ground-water <br /> monitoring wells. The site safety plan is applicable to personnel of RESNA Industries who <br /> perform work at the site. A copy of the site safety plan is available for reference by <br /> appropriate parties during tite work. The onsite representative of RESNA Industries acts <br /> as the Site Safety Officer. <br /> Ground-Water Samplin <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, tion-phosphatic detergent and <br /> deionized water before use in each well. A clean bailer .vas used to obtain a sample from <br /> the surface of the water in the well for subjeciive analysis of hydrocarbons. The sample was <br /> retrieved and visually examined for floating product, sheen, color, and clarity. <br /> Approximately 3 well volumes of ground water were purged from the wells using a stainless- <br /> steel electrical submersible pump. The pump, cables, and hoses were cleaned with a <br /> laboratory-grade, non-phosphatic detergent and water before use in each well. The wells <br /> were purged until withdrawal was of sufficient duration to result in stabilized pH, <br /> temperature, and electrical conductivity of the water, as measured by portable meters <br /> calibrated to a standard buffer and conductivity standard. The wells recovered to more than <br /> 90 percent of the static water level within 5 minutes of turning off the pump. The ground <br /> water purged from the weils was temporarily stored in 17-E, steel. 55-gallon liquid waste <br /> drums approved for this use by the Department of Transportation. <br /> Before collecting each groundwater sample,the geologist cleaned the Teflon bailer with a <br /> laboratory-grade detergent and rinsed it with tap water and deionized water. Hydrochloric <br /> acid was added to the sample vials as a preservative. A sample of the formation water then <br /> was collected from the surface of the water in each of the wells with the Teflon bailer and <br /> slowly transferred to laboratory-cleaned sample containers. <br /> Reporting Results of Analvses <br /> Hydrocarbon constituents in groundwater samples are reported by the laboratory in units <br /> of parts per billion (ppb). The maximum contaminant levels listed in Title 22 of the <br /> California Code of Regulations for benzene, ethylbenzene, and total xylene isomers in <br /> drinking water are 1.0.6$0,and 1,750 ppb, respectively. The action level established by the <br /> California Department of Health Services for toluene is 100 ppb. To conform with the <br /> laboratory reports, we report ground-water chemical data in units of ppb. <br /> 0$30rsis <br />