Laserfiche WebLink
• ~ Results of this monitoring will be included in the annual subsidence report. New <br />structures such as buildings constructed over previously mined areas will be <br />photographed during the next regular subsidence inspection. Follow-up inspections <br />will only be done at the request of the owner or other indication of damage. These <br />new structures will be included in the regular inspection schedule if new mining is <br />projected under the structure. <br />TransColorado Gas Transmission Company (TGTC) installed a gas transmission <br />line across a portion of the permit area, within the South Portals mine area. A July <br />10, 1998 agreement between PCC and TGTC included the commitment for PCC to <br />notify TGTC 6 months prior to undermining the pipeline. This agreement is <br />presented in Appendix 20-9. <br />Until mining resumes in the south portal, no subsidence protection zone or plan for <br />the gas line will be necessary. Should mining via the South Portal be reactivated, <br />the Operator will obtain DMG approval for a subsidence survey or control and <br />mitigation plan. The plan will be designed so no damage will occur to the pipeline <br />and the plan must be approved by the TGTC. The plan must be in place prior to <br />mining within the subsidence angle of draw of the gas line. <br />• <br />20-10 (Rev. 01 /01) <br />