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• Each hole was sampled at nine inch intervals. Each pair of holes was lggged as drilling proceeded. Visual and physical characteristics including color, apparent moisture content, and grain size changes were noted (see Appendix A). The collected sample from each nine-inch interval was placed in an individual repealable, air tight sample bag. The top, unfilled portion of the bag was purged of excess air, and the bag was sealed. Each sample bag was labelled with the hole number, nine-inch sample interval, the date collected, and the sampler's initials. The sample bag was placed in a second repealable air-tight bag. The samples were placed in covered storage buckets for protection from ultraviolet fight and immediately frozen. Samples were then hand delivered to either Core ll.abotatories or Steffen Robertson and Kirsten (SRK) for testing. Holes were terminated when the tailings material became too saturated to be retrieved in the sampling equipment. In all cases, the auger holes were terminated before reaching the five-foot zone outlined for cessation of auguring activities. 2.2.2 Tailings Pore Water Monitoring During a meeting with the Division to discuss the test program being conducted to determine changes in tailings constituents, the Division requested that BMRI attempt to collect a sample of water entrained in the tailings material. BMRI began a tailings water sampling program in March, 1993. A Groundwater Sampling Kit manufactured by BAT was used to sample the entrained water in the deposited tailings. The Kit is described in the following idiscussion. A porous cup one inch in diameter and 2.5 inches in length was mounted on a on$-inch diameter threaded pipe. The unit was then driven by hand and rubber mallet to a depth lof 20 feet into the deposited tailings in the lower impoundment between sample holes 8 and 9 (labeled as hole 8.5 on Figure 2.2). At this depth, the unit would have penetrated 7 to 8 feet into the AVR- treated tailings. 9