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Drill seeding is the preferred method for revegetation. If broadcast seeding is necessary on moist <br />soils, steep slopes, or in excessively rocky areas, success can be encouraged by broadcasting <br />onto growth medium that is very loose. If the seed is broadcast in those circumstances, then the <br />seeded area will be dragged to help bury the seed. <br />Wildlife <br />Current wildlife conditions and potential impacts are described in Exhibit H, Wildlife <br />Information. <br />Water — General Requirement <br />To minimize the effect on the prevailing hydrologic balance, the operator shall: <br />a. Comply with all applicable Colorado water laws. <br />b. Comply with all applicable Federal and State water quality laws and regulations. <br />c. Comply with all Federal and State requirements for dredge and fill. <br />d. Perform all work to minimize erosion and sediment transport. <br />Current water resource conditions and potential surface water and groundwater impacts are <br />described in Exhibit G, Water Information. <br />Groundwater — Specific Requirements <br />The proposed amendment area includes four groundwater ponds with a combined surface area of <br />approximately 75 acres. The pond cavities were excavated in the Cache la Poudre alluvium <br />during previous mining activities. During mining, alluvial groundwater was pumped from the <br />pits to facilitate sand and gravel excavation and processing. Following the completion of mining <br />and removal of the dewatering pumps, alluvial groundwater filled the pits to create the existing <br />ponds. The ponds currently impact the Cache la Poudre River in the form of depletions due to <br />evaporation. In an agreement with Flatiron, the City of Greeley has assumed the long -term <br />augmentation responsibility for the Greeley West Pit and proposed amendment area. A <br />Substitute Water Supply Plan (SWSP) for the replacement of stream depletions associated with <br />mining and reclamation operations will be obtained from the Colorado State Engineer's Office <br />(SEO). Additionally, a well permit (Permit No. 59809 -F) for exposed groundwater in the <br />proposed amendment area has already been obtained. Potential impacts from continued mining <br />in the proposed amendment area are described in Exhibit G, Water Resources. <br />The mining and reclamation operation will not affect groundwater quality on or off the site. The <br />operation will comply with State groundwater quality standards. Due to the absence of <br />significant sources of potential pollutants, groundwater quality monitoring is not required in this <br />operation. <br />Buildings and Structures <br />There are no buildings or structures in the proposed amendment area. <br />Greeley 25 Avenue Site <br />DRMS 112 Permit Amendment Applrcatzon Page 15 <br />