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4. Impact Analysis A. Impacts of Alternative 1, Approval Without Conditions The description of the impacts of the proposed operation is contained in the Findings section of the State's Proposed Decision and Findings of Compliance (pages 9-64). No new surface disturbance is planned for this revision and coal production is expected to remain at present levels. Impacts assessed in the original approval of July, 1981, for socioeconomics, vegetation, wildlife, topography, land use, geology and air quality have not changed. OSM has reviewed the State's cumulative hydrologic impact assessment (CHIA) and concurs with the findings of that document. No significant impacts to the area's hydrologic balance are expected to result from this operation and other ongoing and proposed mining operations in this area. The Endangered Species Office of the U.S. Fish and N1ldlife Service has determined that the only threatened and endangered species to be potentially affected by this operation are the humpbacked chub and the Colorado squawfish. Potential impacts have been properly mitigated by a contribution from the applicant to the Conservation Fund for Endangered Fishes of the Upper Colorado River as approved by the U.S. fish and Wildlife Service. Under section 522(b) of SMCRA, the Secretary of the Interior must conduct a review of Federal lands to determine, pursuant to the standards set forth in sections 522(a)(2) and 522(a>(3> of SMCRA, whether there are areas on federal lands that are unsuitable for all or certain types of surface coal mining operations. The Federal lands within the permit area were reviewed by OSM and the results of that review are discussed below. Section 522(a>(2> of SMCRA requires that reclamation must be technologically and economically feasible. OSM (1) reviewed the operations and reclamation plan portion of the permit application, <2) reviewed and concurs with Colorado MLRD's finding that reclamation, as required by the State program approved pursuant to SMCRA, can be accomplished under the reclamation plan contained in the permit application, and (3> reviewed and concurs with Colorado MLRD's reclamation cost determined for bond requirement. As a result of this review, OSM determines that the reclamation as proposed in the PAP is technologically and economically feasible. Section 522<a)(3) of SMCRA states that "a surface area may be' .designated unsuitable for certain types of surface coal mining operations 1f such operations will: (A) be incompatible with existing State or local land use plans or programs; or