ENFORCE35313 - Laserfiche WebLink

Home Browse Search

February 19, 1993 Page 2 NOV C-93-006 gTEP 2: A report format for the subsidenoe Monitoring Reports Heads to bs designed for the six-month and year-and report, in order to fulfill this abatement step. Referencing stipulation 17, "This report format should recognize the importance of continual update oP subsidence data interpretation, monitoring of ground water levels and spring flows, monitoring oP mina inflow, and subaurfnae ground conditions which could ba correlated to subsidence prediction.". (In earlier correspondence between the Division and MCC, during the 1991 (9a) Permit Renewal, the Division determined that this stipulation could be terminated beeause it had been incorporated into the permit application. IIpan further ravinw by the Division, it was noted that this stipulation contained two parts. The first part, which required MCC to submit reports of its eubeidenc• monitoring program on a semi-annual basis has bean complied with ns stated previously; however, the second part requires submittal of a revised report Format, which has not been oomplied with. 81nca, the second part has not been complied with, the stipulation was not terminated.} Corresponding with Stipulation 17, MCC should conaidar, at least, providing the information required in STEP 3, below, as part o! MCC~e year-end submittal. The mid-year submittal could inoluda a portion of this information. ~: Aa mentioned previously, the Division did receive a Subaidonae Monitoring Report on January 19, 1996. since it hoe been ono-and-a-halt years since the Division hoe had the opportunity to review MCC~s subsidence data, the following information must be submitted in order to abate BTEP 3: 1. A summary o! surveying techniques and monitoring schedule. Z. The elevation difference between the current survey and the last survey. 3. A comparison of predictions versus actual data. a. A topography map with the subsidence monuments far tho F-aoam and B-seam olearly identified, as well as the bench mark monuments !or each subsidence monitoring network. 5. Amine plan map which shows where mining hoe occurred since the last survey and where mining will occur until the next survey is completed. This map should ba the acme scale as the map requested in }4 above, ao that the two mops can be superimposed. 6. A summary of the subsidence results to date.