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111 Illlllllllllllll <br />~.. <br />INTEROFFICE h1EMORANDUM <br />-1 <br />TO: BO i. CARTIR <br />FROM: JANET BIIYNS ' <br />SUBJECT: SANBORN EK M ~ , TR-32 COtvII'LETENESS REVIEW <br />DATE: l 1/13/98 <br />CC: DAN I-IFRNANDEZ, BYRON WALKER <br />I have reviewed Oxbow Mining Inc.'s application for a Technical Revision, TR-32, to the <br />Sanborn Creek Mine. <br />I reviewed the application for completeness with the following regulations: <br />2.04.9- Insufficient data is presented in the application regarding the topsoil suitability, <br />(particle size description, soil fertility, % organic matter), and available quantity for <br />salvage in proposed disturbance area for the Division to evaluate. <br />2.04.10 - Application is complete <br />2.04.11 -Application is complete <br />2.05.4 -Application is complete <br />2.0.5 -Application is complete <br />2.05.6(2)- Application is complete <br />2.10.1- Appropriate maps in regazds to topography have been provided. Maps relating to <br />vegetative communities and topsoil units are contained in the permit. <br />3.02.2- Oxbow Mining Inc. did not provide reclamation costs. The application is <br />deficient in detail of specific design for portions of the proposed facilities. <br />a) No information was provided on the dimensions of the proposed conveyor, <br />nor on the size and number of footers that would be constructed.. <br />b) Please provide dimensions of the ventilation fans, ductwork, fan housing and <br />concrete slab. <br />c) Please provide detail on sealing of the vent fans. How far below grade would <br />the cap (concrete or steal beam and steel plate) be installed, and where would <br />fill material covering the cap be hauled from? <br />