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4-5 <br />Approximately two acres of disturbance will occur on the alluvial floor of East Salt Creek for <br />• the surface facilities of the McClave Canyon Mine. One-half an acre of disturbance occurred <br />when a ranch road was upgraded during exploration development. One acre of disturbance <br />exists at the sediment pond, topsoil stockpile and proposed rip-rap storage area. Approximately <br />one half acre of disturbance is associated with the office complex. <br />Potable water storage tanks and a waste water treatment system are associated with the <br />office area. Potable water will be delivered to the mine to be used at the offices and then added <br />to the groundwater system via the septic tank and leach field. This minimal addition will have no <br />effect upon the quantity of water available in the groundwater system when compared to the <br />amount of water in the system. <br />The quality of the groundwater will show no appreciable change from the existing quality. <br />The potable water delivered to the mine will be used for showers and sanitary facilities in the <br />mine bath house. Water added to the alluvial aquifer after use will probably be better quality than <br />the groundwater in the area. (See Appendix N) Because of this fact and the fact that the <br />quantities of water added will be negligible when compared to the total water available, Grand <br />• Valley does not propose additional groundwater monitoring designed specifically for this system. <br />Rather the existing monitoring wells will be used. (See Section 4.2.4) <br />• <br />M~ Volume 1 4 - 29 - 96 <br />