Laserfiche WebLink
<br />1) geologic logs for each location <br />2) well construction diagrams (TDH format) <br /> <br />3) well construction specifications and construction <br />summary <br /> <br />4) copy of Water Well Drillers' report sent to TDH <br /> <br />5) well development records <br /> <br />6) survey data <br /> <br />TASK 2 - Ground-Water Samplinq.and Analvsis <br /> <br />Samples will be collected from the three new wells and three <br />existing wells containing water in accordance with Texas <br />Department of Health and EPA protocols. Field measurements of <br />pH, specific conductance and temperature will be performed and <br />samples will be analyzed in a laboratory for general chemistry <br />parameters required by the Texas Department of Health and <br />Priority Pollutant volatile organic compounds. Detailed lists <br />of parameters and EPA-approved analytical methods are presented <br />in this section. <br /> <br />The procedures for collecting, handling and analyzing ground- <br />water samples are described below. Deviations from these <br />procedures may be required during the program. Such deviations <br />will first be approved by the Project Manager. <br /> <br />Decontamination <br /> <br />All equipment used to measure water levels or to purge and <br />sample wells will be decontaminated before each use. Water <br />level indicators will be rinsed with distilled water. Bailers, <br />Teflon ropes and wire cables will be decontaminated in the <br />following manner: <br /> <br />1) <br />2) <br />3) <br /> <br />Scrub with non-phosphate detergent solution. <br />Rinse with distilled water. <br />Wrap in plastic until needed. <br /> <br />If non-Teflon ropes are used to lower bailers, they will be <br />discarded between locations. <br /> <br />Headspace. water level and immiscible laver measurements <br /> <br />After opening the well, and prior to any water level <br />measurements, purging or water sampling, the air in the wellhead <br />(headspace) will be sampled by inserting the probe of an organic <br />vapor meter several inches into the well and recording the <br /> <br />5 <br />