ARCHIVED REPORTS XR0011355 - Laserfiche WebLink

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r ` . have the caps replaced loosely after each measurement, so that they are open to the surface atmosphere This action will enhance the monitoring wells stabilization prior to measuring the depth to water within the casing The wells will be sounded for depth to water to establish groundwater gradient and total depth to calculate the standing water r,olumn A three to five well volume purge will be completed The purging activities will be completed with a Grundfos submersible pump, centrifugal pump or ISCO peristaltic pump and the pH, Temperature, Conductivity and Visual Turbidity will be monitored with calibrated field instruments to establish that the well is producing representative water during it's recharge for a accurate sampling event Next, the well will be sampled with a clean teflon or stainless steel bailer Prior to sampling, a bailer blank sample will be collected by pouring distilled water into the bailer and collecting one V O A for Quality Control measures Then two V O A 's will be collected for fi om the well with this same bailer by lowering the bailer slowly into the well Upon retrieving the bailer the sample of water will be decanted into the V O A 's smoothly and with particular attention as to not agitate or oxygenate the sample in any manner All samples will be labeled and entered into a sample Cham-of-Custody immediately upon collection The samples will be placed into a ice chest with ice or blue ice to maintain a level of 4 degrees celsius while in transit to the laboratory Samples submitted to the laboratory under the (COC) will be analyzed for total petroleum hydrocarbon products (in the gasoline range) by modified EPA Method 8015, minimum detection limit 1 mg/kg and Benzene, Toluene, Ethyl Benzene, Total Xylene EPA Method 8020, minimum detection limit 3 ug/kg All development and purge water will be contained on site in D O T 17 drums for containment and determination of proper disposal Surveying of the new monitoring wells will be completed by a licensed surveyor, to the top notched northern edge of the well casing, relative to a arbitrary datum point It will be the goal of this soil boring and monitoring well routine to fully define the extent of the soil & water contamination It is also our intent to determine the geology of the area where the borings are placed to further define the most appropriate means of remediating the contamination from these zones 6