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-4- 29. Prior to placement of drainage culverts, the applicant shall submit to the regulatory authorities a revised design For pipes 10 and 11 incorpor- ating sufficient flow capacity to prevent ditch overtopping. The applicant shall also submit a plan and design drawings for road culvert trash racks to be installed on culverts of 30 inches diameter or less. OSM TER: Stipulation No. 35 (listed as "c" under Section 817.180), p. 190 7. Stipulation: UPON COMPLETION OF NEGOTIATIONS TO ACQUIRE TNAT RIGHT TO INSTALL RND USE A RAILROAD SIDING AND LOADOUT FACILITY, ARCO COAL MUST SUBMIT TO THE DIVISION A SEDIMENTATION CONTROL PLAN FOR THIS AREA BY SEPTEMBER 30, 1981. MLRD Findings Document: Stipulation No. 37, p. 45 OSM Findings Document: This stipulation has not been included in the OSM findings document. OSM TEA: Stipulation No. 36 (listed as "d" under Section 817.180), p. 190 8. Stipulation: DESCRIBE IN DETAIL THE METHOD OF CAPPING (OR FILLING) BORE HOLES FROM THE SURFACE IN ORDER TO PREVENT HAZARDS TO THE HYDROLOGIC BALANCE. THIS INFORMATION MUST BE SUBMITTED TO THE DIVISION BY SEPTEMBER 30, 1981. MLRD Findings Document: Stipulation No. 40, p. 45 OSM Findings Document: Stipulation No. 7, p. 5 as follows: 7. RRCO must describe in detail the method of capping (or filling) bore holes from the surface in order to prevent hazards to the hydrologic balance. This information must be submitted to the regulatory authority. The appli- cant must present plans showing how mine openings will be sealed to prevent mine inflows upon completion of mining. These plans shall be submitted to the regulatory prior to issuing the next 5-year permit. OSM TEA: Stipulation No. 3, p. 9 as follows: 3. Stipulation: ARCO COAL COMPANY shall provide to the regulatory authority within 30 days a detailed description of the method of abandoning bore holes from the surface in order to prevent commingling of waters between aquifers and/or of waters between the surface and aquifers. 9. Stipulation: ARCO COAL MUST SUBMIT TO THE DIVISION DETAILED PLANS FOR CAPPING OF WELLS NO LATER THAN SEPTEMBER 30, 1981. ARCO COAL MUST SUBMIT TO THE DIVISION DETAILED PLANS FOR THE SEALING OF PORTALS NO LATER THAN SIX (6) MONTHS AFTER COMPLETION OF THE THREE (3) PORTALS INITIALLY PROPOSED TO BE INSTALLED RND THEIR ASSOCIATED DEWATERING FACILITIES. MLRD Findings Document: Stipulation No. 38, p. 45 OSM Findings Document: This stipulation has not been included in the OSM findings document. OSM TEA: Stipulation No. 1, p. 8 as follows: 1. Stipulation: Submit detailed plans for sealing all mine openings and abandoning wells. 10. Stipulation: ARCO COAL MUST SUBMIT TO THE DIVISION PLANS AND SPECIFICATIONS IN ADEQUATE DETAIL, TO DEMONSTRATE THAT THE PROPOSED SEALING METHODS WILL NOT - t 1. ~ ~ ~