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' 3.0 PROCEDURES On October 19, 1994, groundwater samples were collected from the three monitoring wells at the site The following is a discussion of the sampling procedures used 31 Monitoring Well Sampling Prior to initiating the sample collection from each monitoring well, the depth ' to groundwater was measured to the nearest 0 01 foot with a Solinst water level ' meter As in previous monitoring events, no groundwater was present in MW-1 After collecting the depth to water measurements, the total required purge volume from each well was calculated A clear inert polyethylene disposable bailer was then submersed approximately one to two feet into the water-air interface in each ' well The retrieved water in the bailer was then inspected for visible free floating product or a thin oil sheen None of the wells showed any appearances of free visible floating product ' Following the inspection of the standing water surface, a 4 inch Grundfos submersible pump was used to purge the wells Between 33 and 51 gallons of water (minimum of 3 well volumes as calculated) were removed from each well prior to the collection of a water sample Inorganic data were collected using a Corning Instruments pH, conductivity, dissolved oxygen and temperature meter The inorganic data collected during the purge along with the standing water level ' data and purge volume calculations are shown on the well sampling data sheets contained in Appendix A The purge water from each well was placed in 55 gallon ' drums which were labeled as to the source of the contents and stored on-site for future disposal Following the well purge, a water sample was collected from each well using an inert polyethylene disposable bailer Each sample was collected in five 40 ml VOA vials, placed in an ice-chilled container and transported to a state ' 4