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-19- A11 of the sedimentary rock strata exposed over the mine area are members of the Raton Formation. This formation is 1,200 to 1,600 feet thick. The Maxwell seam is found near the middle of the Ratan Formation. The seam acts as a laterally extensive aquifer, but has limited permeability and poor water quality. Above the Maxwell seam, interbedded sandstone, siltstone, and shale rock units sustain localized perched aquifers. These aquifers are laterally and vertically discontinuous and have low permeabilities. These aquifers may supply discharge to wells, springs, and seeps which are used for domestic water supplies, for watering livestock, and by wildlife. The Vernejo Formation underlies the Raton Formation. The Vermejo Formation, like the Raton Formation, consists of interbedded and lenticular shales, siltstones, sandstones, and coals. Some of the sandstones and siltstones are very localized, discontinuous aquifers. These aquifers may supply discharge to localized wells, springs, and seeps which are used for domestic supplies, for watering livestock, and by wildlife. The Trinidad Sandstone Formation underlies the Vermejo Formation. The Trinidad Sandstone is a laterally extensive sandstone formation used as a key marker bed in the Raton Basin. This formation consists of massive and interbedded sandstones. The formation is a significant regional aquifer, because of its lateral extent and saturated thickness. However, the Trinidad Sandstone is not used as a water supply in the permit and adjacent areas, probably due to the availability of alluvial and surface water supplies, and the depth of drilling required to tap this aquifer. The applicant has not supplied sufficient information on the springs and seeps in the Maxwell Mine's permit and adjacent areas. The applicant has supplied preliminary unpublished data collected by Arthur Geldon of the U.S. Geologic Survey, Water Resource Division, Pueblo, Colorado. This preliminary data is presented in the applicant's August 20, 1982, response to the Oraft Findings document. The data submitted by the applicant covers an area north of the Purgatoire River and documents water quantity and quality in most, but not ail, of the wells, springs, and seeps which were identified in this area. The areas of the Maxwell Mine which have been mined, and those areas which will be mined upon resumption of mining operations, were not covered in the well, spring, and seep survey. These areas of the Maxwell Mine lie south of the Purgatoire River. In order to find the operator in compliance with Rules 2,04.7(1)(a)(iii), 2.04.7(1)(b), 2.04.7(2)(a), and 2.04.7{2)(b)(ii), the following stipulations are necessary. Stipulation No. 4 THE PERMITTEE SHALL CONDUCT A PRELIMINARY SPRING AND SEEP SURVEY USING AERIAL PHOTOGRAPHY OF THE PERMIT AND ADJACENT AREAS. THE PRELIMINARY SPRING SURVEY SHALL CONSIST OF A MAP OF THE PERMIT AND ADJACENT AREAS WHICH WILL SHOW THE LOCATION OF ALL POTENTIAL SPRING AND SEEPS IDENTIFIED ON THE AERIAL PHOTOGRAPHS. THE PRELIMINARY SPRING SURVEY SHALL BE SUBMITTED TO THE DIVISION WITHIN 30 DAYS OF THE PERMIT ISSUANCE AND BEFORE THE COMMENCEMENT Of MINING IN THE MAXWELL MINE.