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HomeMy WebLinkAboutReview of Supplemental Information - 7/23/1993State of North Carolina Department of Environment, Health and Natural Resources Division of Land Resources James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary Charles Gardner, P.G_ P.E. Director and State Geologist July 23, 1993 Mr. Bill H. Cecile, President Radford Quarries of Boone, Inc. P.O. Box 1114 North Wilkesboro, North Carolina 28659 F== F=1 RE: Supplemental Information for Application for a Mining Permit Bamboo Road Quarry Watauga County Dear Mr. Cecile: This office has completed its review of the supplemental information your attorney, Mr. Randal Marsh, submitted to this office on your behalf dated July 7, 1993, -which was received by the Land Quality Section on July 13, 1993. Although many of the issues raised by this office in its letter to you dated May 14, 1993 have now been addressed, there are several issues that still need clarification before this office can continue its review of your application. These remaining items are as follows: ,/1) Although an overall mining permit boundary has been indicated on the mine maps, said boundary still does not clearly include all existing and proposed land disturbing activities. The permit boundary, as indicated on the revised mine map, runs down the centerline of the access roads around and above the quarry' excavation. In addition, the highwall barriers have been indicated outside of the permit boundary. Please note that all aspects of the mining operation must be located inside the proposed permit boundary. The reason for this is to ensure that these areas, which will be used for the mining operation, are covered by the mining permit which will require proper installation, maintenance and reclamation of these areas under the mining Act. Therefore, please adjust the mining permit boundary to encompass all access roads and highwall barriers to be utilized around the pit area. In addition, the proposed limits of the mine excavation and corresponding buffer ----..---,-zone widths between the mining limits and the --permit Geological Survey Section Land Quality Section Geodetic Survey Section (919) 733-2423 (919) 733-4574 (919) 733-3836 FAX: (919) 733-0900 FAX: 733-2876 FAX: 733-4407 P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone 919-733-3833 FAX919-733-4407 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper Mr. Cecile Page 2 boundary must also be clearly labelled on the mine map. In addition, if this adjustment results in a significant change in the acreage to be permitted (currently proposed as 13.96 acres), a revised acreage must be provided for the overall permit area. ,v/2) Please note that this office has not received the additional application processing fee of $750.00 for the additional acreage that was added to the permit application. The required fee for a quarry with a permitted acreage of 10 but less than 25 acres is a total of $1,000.00. To date, this office has only received the initial check in the amount of $250.00. Please note that a decision on your mining permit application cannot be made until this remaining fee ($750.00) is paid. -/3) Although the sediment basin has been removed from its previous location on the map adjacent to the riverbank, perimeter dike symbols (indicated as 11PD11 and drawn by v1 Municipal Engineering) are still indicated on the map to convey runoff to the basin's previous location. This is Also true on the east side of SR 1514 in f ront of the scales and primary crusher. As these items are no longer applicable, please delete these symbols from the mine map. In addition, no reference has been made on the revised mine maps as to how and when the area between the permit -/boundary and the riverbank will be permanently revegetated with native and wildlife species and remain undisturbed. Will it be revegetated in place or will the fill area be removed then the subsequent area revegetated? Lastly, Mr. Marsh, at our June 7, 1993 meeting in Raleigh, agreed to f orward to this of f ice copies of ./supporting documentation and calculations compiled by the engineer who certified the flood elevations on the map. To date, this office has not received such documentation to verify these elevations. ,/4) As noted in my May 14, 1993 letter, a revised construction detail is needed for the perimeter dike proposed to divert all surface water runoff from the Processing 'Center - to * Sediment' -Basin No. 1. -- -The dike detail must clearly indicate that an excavated channel will be installed at the inside toe of the dike to 1, Mr. Cecile Page 3 sufficiently carry the runoff to the basin without breaching or overtopping the berm. Design calculations are also needed for the perimeter dike/channel system to support the size and proper stabilization of the channel. v/5 This office's review of the storage capacity of Sediment Basin No. 1 noted that the proposed dimensions must be increased or the basin, as proposed, must be cleaned out every six months and after every significant rainfall to prevent failure of the structure. In addition, the Silt Basin Schedule on the second sheet still indicates the elevations of the initial basin proposed adjacent to the riverbank. This schedule must be revised to clarify the frequency of cleanout and the correct elevations for the basin bottom, spillway and berm sections. ,/6) Although "landscaping" has been proposed in various areas at the Processing Center, information has not been provided as to the type and size of the plantings to be utilized. Will the "landscaping" be flowers, shrubs and/or trees? What types do you propose to plant and when? It appears that plantings for visual screening can be safely provided between SR 1514 and the road that runs parallel and directly in front of the shop. These plantings will be far enough back away from the road's connection with SR 1514 to allow proper visibility. In addition, as the Surplus Material Storage has been relocated outside of the proposed visual screening, V/ plantings must be provided between it and SR 1514 to screen it from public view.' As stated earlier, this revised screening should provide a direct visual screen for these aspects of the operation while providing a recessed screen that will not interfere with sight distance on SR 1514. Locations and details for this revised screening,' or other similar alternative, must be provided on the mine maps. As noted earlier, all access roads to be utilized to access any stripping and mine areas on the east side of SR 1514 must be located within the mining permit boundary and must have properly designed and constructed erosion and sedimentation control measures to prevent offsite sedimentation. As you are aware, runoff down the access road located -at the -northern end of the existing pit has caused failure and offsite sedimentation at the curve in the road. As a result, you had constructed a rock dam in the wash area to prevent further erosion and sedimentation problems. Please locate this rock dam, and Mr. Cecile Page 4 any other structures that exist or are needed to control runoff on these access roads, on the mine map. Locations, design calculations and construction details are needed for each structure to ensure that their proposed dimensions will be sufficient. At our meeting on June 7, 1993, it was indicated that you would install a water bar across the access road that exits onto the east side of SR 1514 to slow runoff and prevent stone from the road from washing onto SR 1514. However, this issue was not addressed on your revised mine map. Therefore, please provide a construction detail of the water bar and indicate its location on the mine map. ,/10) Although you have indicated the locations of the discharge pump and its corresponding pipe on the mine map, it appears that the pipe will end at the upstream end of the culvert. If so, please provide details of how the outlet point of the discharge pipe will be stabilized to prevent erosion and offsite sedimentation. A rip -rap lined sediment basin/pool may be necessary to prevent scour at the discharge point prior to the water entering the culvert under SR 1514. This issue must be clarified on the mine map. J11) Although a typical cross-section of the pit has been provided on the second sheet of the mine maps, several items have not been provided on the cross-section as previously requested. The cross-section must clearly indicate the permit boundary, buffer zone width, highwall barrier and corresponding safety ledge in addition to the 2 horizontal to 1 vertical or flatter overburden slope, the minimum 20 foot wide safety bench at the toe of said slope, and the quarry face that you provided. Again, please be sure to clearly label on the mine maps v/the width of the undisturbed buffer zone that will be maintained between the top of the mine excavation and the permit boundary on all sides of the site. /12) Clarification is still needed regarding notification of adjoining landowners as outlined in my letter to you dated April 29, 1993 and May 14, 1993. This office still has not received copies of all return receipt cards for all persons notified of this application. In addition, the Castiblancos and the Austins have not been located on the adjoining landowners map. Which adjoining landowners on the map have now been replaced/conveyed their properties to the persons noted above? Mr. Cecile Page 5 J13) The size and boundaries of the Surplus Material Storage area containing all scrap metal, junk equipment and parts, and other refuse has not been clearly indicated on the mine maps. In addition, how will it be accessed now that it has been relocated behind the perimeter dike leading to the sediment basin? How and when will this material be removed from the site and properly disposed of offsite? Again, how do you propose to visually screen this area from SR 1514? Please clarify these issues. PLEASE BE ADVISED THAT THIS OFFICE CANNOT CONTINUE ITS REVIEW OF YOUR APPLICATION UNTIL ALL OF THE ABOVE ITEMS HAVE BEEN ADEQUATELY ADDRESSED. Although significant progress has been made in clarifying the issues raised in my previous letter, the remaining issues noted above must be addressed before a decision can be made on your application. It is strongly recommended by this office that you solicit assistance from an experienced surveyor or engineer regarding the technical issues addressed in this letter. In addition, this office has been advised that you have not, to date, received an air quality permit nor a water quality discharge permit for this site. Even if your application for a mining permit is approved, please be advised that no crushing or mine dewatering can be conducted at this site without first obtaining appropriate air quality and water quality permits for these activities, respectively. Lastly, if the Director determines that your mining permit application can be approved, the final mining permit cannot be issued for this site until this office has received a reclamation bond in the name of "Radford Quarries of Boone, Inc." in the amount of $12,500.00, to cover 10 to 25 acres of affected area at the site. The Department's standard procedure is to, once the application is approved, forward a "draft" permit to the applicant along with various bond forms for securing the required bond. Once the required bond is received by this office, the final mining permit is then forwarded to the Director, Division of Land Resources, for his final consideration and decision. I am advising you of this matter now so that you may begin work on securing the required bond. In order to continue processing your application, please forward three (3) copies of the requested information to my attention at the following address: Mr. Cecile Page 6 Land Quality Section P.O. Box 27687 Raleigh, North Carolina 27611 If you should have any questions on the above or would like to contact me to discuss the contents of this letter, please contact me at (919) 733-4574. Si, ,)64erely, �/ajcy Dav�is, E.I.T. State Mining Specialist Land Quality Section TED/td cc: Mr. Charles Gardner Mr. Mell Nevils Mr. Doug Miller Ms. Sueanna Sumpter Mr. Randal Marsh Mr. Joe Napoleon Mr. Dave Paletta