2002-11-25_REVISION - M1977344 (2)

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Date: November 25, 2002 To: Bill Guillermo, Holcimr ~1J~~j From: Larry D. Oehler !lJ V ~ Re: File No. M-1977-0344, Adequacy Review, AM-1, Portland Limestone Quarry GENERAL 1. In accordance with Rule 6 Section 2.1(2)(d), show the proposed permit boundazy on the Exhibit C fig. C-4 and C-6 maps. Exhibit C -Pre-Mining and Mining Plan Maps of Affected Lands 2. On an Exhibit C map, provide an Affected Lands Boundazy to satisfy the requirement of Rule 6 Section 4.3(c). This boundary.is separate in this situation from the Permit Bouadazy. The Affected Land boundazy delineates the ]and within the permit [hat is proposed to be affected from land that will not be affected (see Rule 1 Section 1(3) for the definition of affected land). Your Exhibit C Maps indicate that there aze azeas within the permit boundary that will not be disturbed by a training activity. An affected land boundazy sepazates those azeas from azeas that aze or will be affected. Permit boundazy lines should be used to delineate azeas previously released from reclamation responsibility. However, if previously released azeas aze [o be re-affected a permiUaffected land boundary should be used to bring such azeas back into the permit. An example of [his is the area that will be affected by the diversion of Bear Creek across land mazked as "released from bond 1990", on the Fig. F-1 map. If the azea marked as "released from bond 1987" has or will be re-disturbed, it should treated the same way. The affected land boundary should at a minimum be placed on the Fig. C-2 and Fig. F-lmaps. It would be desirable to include the boundazy on all Exhibit C maps. 3. Please show the location of all active and proposed ground watez monitoring wells. (see Rule 6 Section 4.3(f) ) 4. Please explain [he green boundary line on the Fig. C-6 map. What does the line represent? If it is a portion of the permit boundazy, show it as such with a map symbol in a legend. If it is a permit boundary line, why does it include land in the northwest corner not included on other Exhibit C maps? 5. Your reclamation plan map in the area where Beaz Creek leaves the affected land area (shown by extraction "cu[" boundary lines) shows contour lines outside that boundazy differing from the existing topography. This topographic change indicates that the land will be disturbed. The mining plan map does not show that the land is proposed to be affected. Please explain this discrepancy. Change your mining plan and or reclamation plan maps as necessazy. Exhibit D -Mining Plan 6. Your Exhibit D includes three identical statements of "CONFIDENTIAL INFORMATION provided under sepazate cover." This information was never received. Please provide that information so that it can be included in the amendment review. The Division reminds Holcim that according to RuIel Section 1.3(3) an operator may only mazk as confidential information disclosing the location, size or nature of the deposit or depth and thickness of the deposit and thickness and type of overburden to be removed. All other information required by Lhe regulations can no[ be kept confidential. 7. During [hepre-operation inspection conducted on October 10, 2002, the need for sediment control in the Beaz Creek mining azea was discussed. The Division suggested that a sediment retention dam (pond) could be constructed on or near the lower reach of the creek within the permit azea to prevent silt from being deposited on land outside the affected land boundazy or from degrading water quality downstream of your operation. Please provide a sediment control plan including designs for any structure/s, for the Bear Creek drainage / mining azea.