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,. Memo/Gregg Squire - 2 - July 3, 1986 Those parameters that can be eliminated are as follows: 1. NH3 2. C03 3. Zn 4. Mo 5. Total P 6. K 7. Hardness CaC03 8. C1 9, F Additionally, the adjusted full-suite parameter list for Well TP-W1 monitoring requirements can be reduced from quarterly sample collection to bi-annually sample collection. However, a regular monthly monitoring program for both the wells should remain for the field parameter list. This list should consist of the following: pH Specific Conductance Temperature Water Level Also, I would like to see the addition of an alluvial (colluvial) well on the north side of the property below the coal stockpile and the pond in Lewis Gulch. This well could be hand dug, if necessary, and penetrate the full thickness of the alluvium down to bedrock (with PVC slotted casing, maximum depth of 15 feet). If alluvial (colluvial) ground water is encountered in this well on a regular basis, then the previously mentioned adjusted full-suite parameter list should also be applied to this well on a bi-annual basis. Additionally, monthly field parameters should be tested for. If, however, it appears that the well will remain dry for any length of time, then it should be examined for water inflow on a monthly basis; and, if found to contain water, then tested as per above procedure. The reason for this additional well is because analysis of the ground water conditions at and near the mine site indicate a north to northeast alluvial (shallow ground water in colluvium?) flow component in Lewis Gulch. However, bedrock ground water flow may be directionally different (up to 90°, + or -, south and east) from the alluvial (colluvial) flow direction, even if there is some interconnection between the two lithotypes. The presence of the coal stockpile and Lewis Gulch sediment pond, as well as the bench pond in Lewis Gulch, requires a monitoring point in the alluvial (colluvial) system. /dlm 1997