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Home My WebLink About20240214_LQS LAND QUALITY SECTION REGIONAL OFFICE MINING PERMIT APPLICATION REVIEW CHECKLIST APPLICATION/PERMIT NO.: 55-01 1 ACTION: New Modification Transfer Release APPLICANT NAME: BV Hedrick Gravel and Sand Company ❑ ❑X ❑ ❑ MINE NAME: Lake Norman Quarry COUNTY: Lincoln • Yes No Explain A. Is the site currently under NOV? X B. Is an NPDES permit needed? 0 Not for the proposed modification. C. Is an NPDES permitting existing? ❑X D. Is an O & M Plan needed? Field Issues Yes No A. Are potential wetlands and watercourses properly indicated on the Mine Map? ❑X B. Are the proposed buffer zones adequate? ❑X See attached comments. C. Do all occupied dwellings within 300 feet of the mine excavation appear to be indicated? D. Do all water supply wells within 500 feet of the mine excavation appear to be indicated? ❑X Not shown on drawings, but stated in the application. E. Is visual screening needed? ❑X It is provided. F. Are the proposed erosion and sedimentation control measures properly located to prevent offsite sedimentation? See comments. G. Is the proposed revegetation/reclamation plan acceptable? X No reclamation drawings were provided. * Date Inspected: Erosion and Sedimentation Control Plan Review It is the responsibility of the Regional Office staff to verify the adequacy of the E&SC measures. Please provide any concerns or comments: "M-1-7 • was the application rout- • Date Division of Air Quality: Melinda Wolanin 02/05/2024 Division of Water Resources (Surface Water Protection Section): Other: Inspector/Reviewer's Name: Shannon Leonard/Ian Callaway/Jerry Eplin 02/14/2024 Rev: Sept 2020 r0 Mine Comments for 55-01 Lake Norman Quarry 2/14/2024 • The Legend colors, being used to identify areas, do not identify the correct areas. For example, the pit areas and stockpile areas do not appear to be correct. In addition, a color on the mine map is being used, which has not been identified in the Legend Table. All colors need to be identified on plans and Legend (e.g. orange color along NW side of mine map). Symbols in Legend Table do not match symbols being used on the mine map (e.g. Rock Dam in Legend is stone outlet in silt fence). All symbols need to match. • Acreage for the stream restoration listed total LOD as 34.7 while the application has only listed an acreage of 26.60. The mine map needs to clearly show the areas being added to the permit, including providing the acreage for that area. • Mine map and stream restoration plan contours do not match. The mine map plan and the stream restoration plans need to show accurate existing and/or proposed topo contours. • Mine map shows silt fence with stone outlets and diversion ditches along the South side of Stockpile/Berm area (along North side of Forney Creek relocation). These measures are not sufficient for the drainage area to the proposed measures. In addition, silt fence typically has a life span of 6-9 months. It appears adequate measures will be needed in this area for much longer. Therefore, the proposed measures need to be sufficient for the length of time necessary to conduct the proposed disturbance activities. Note: past aerial photos appear to show sediment traps were installed in these areas. It is unclear why the plans do not show the actual measures that were installed. Also, it should be noted that sediment traps are not rock dams. It is unclear why a different measure was installed if rock dams were supposed to be installed. It is unclear why the stream plans do not show these same measures. The measures on the mine map do not match the stream plans. The stream plans need to have a construction sequence showing how proposed work is to be conducted and when to install proposed measures. The construction sequence needs to clearly show how new stream will be constructed and stabilized prior to redirecting stream flow from old channel to the new channel. • Mine map shows silt fence with stone outlets and diversion ditches along the West side of Stockpile area, located East of the tailings pond. These measures are not sufficient for the drainage area to the proposed measures. In addition, silt fence typically has a life span of 6-9 months. It appears adequate measures will be needed in this area for much longer. Therefore, the proposed measures need to be sufficient for the length of time necessary to conduct the proposed disturbance activities. • Mine map should provide existing topo contours and proposed topo contours for the stream relocation. • The mine map does not show the re-establishment of the stream buffer along the new relocated stream channel. Adequate buffers must be provided along the stream channel. Provide a legend to denote stream buffer. • Proposed topo contours need to be provided for basins. In addition, drainage area maps and basin design calculations need to be provided. Also, stage storage data should be provided to show where surface area has been obtained. • Clearly show all existing and proposed stream crossings for access roads on the mine map. Provide the size of culverts on the plans if culverts will be installed and/or show how access across the stream crossing will be obtained on a permanent basis. • It appears a perimeter berm may be installed, however, the mine plans do not clearly indicate where the berm will be constructed. In addition, the mine map does not show any proposed topo contours for a perimeter berm. • Need to provide a new and updated reclamation plan and map to represent the modification to current site conditions. • Need to provide a map that will show where the new 100 year and 500-year flood plains will be according to FEMA after stream relocation. • Mine plans need to show the proposed topo contours for the stockpile areas. • Ensure mine map clearly shows existing storm drainage systems and/or culverts in streams, including culvert sizes. • The mine map and the stream restoration plans do not show adequate erosion control measures throughout all phases of construction. It appears a more detailed mine map and erosion control plan will be necessary. In addition, a detailed construction sequence needs to be provided on the erosion control plans. Ensure the plans clearly show the acreage to be disturbed. Significant revisions will be needed to provide adequate erosion control measures. Ensure all measures are sized for the proper storm event. Provide all necessary construction details for measures used on the plans. • The Permitted Area Use Map (Fig. 1-2) shows approximately 4.5 acres of wetlands, however, the mine map do not show any wetlands. Ensure wetlands are clearly identified on the mine map. In addition, the proposed borrow waste area on the stream plans does not appear to be located within the Overburden Storage & Berm area. Please clarify. • On the mine map, it appears the 50' mine perimeter buffer has been removed from the NW side of the site. Need to show buffer and/or clarify intent. • Provide adequate temporary and permanent seeding specifications, including riparian seeding specifications and nurse crops. • The 1" = 100' scale on the stream plans does not show overland relief sufficiently. Provide a smaller plan scale which shows topo relief to conduct a sufficient plan review. In addition, provide one standard size plan and one half-size plan. • It appears wetlands may be disturbed with the proposed excavation located South of STA 3+00 of the relocated Forney Creek. In addition, there are no erosion control measures being proposed to prevent sediment damage to the existing stream. Adequate measures must be provided between the disturbed area and live stream at all times. These measures must be shown on the plans and designed for the entire drainage area in which the measures will receive. • Provide topo labels on the plans to identify existing elevations and proposed elevations. • The new constructed stream relocation needs to be constructed completely off-line of the existing stream. Once adequate vegetation and stabilization has been provided for the new stream channel, then the channel can be tied into the existing stream channel to allow rerouting of the stream flow. Revise construction sequence notes and plans accordingly.