2021-04-20_REVISION - M1983033 (20)

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Walstrum Spur Amendment, Exhibit D— Mining Plan April 2021 Explosives are currently used in the Existing Quarry and will continue to be used in the same manner in the Spur Amendment area. Explosives such as Ammonium Nitrate — Fuel Oil (ANFO) or an emulsion are used as the explosive agent. Explosives are delivered to the site as needed; no explosives are stored on-site. Precise quantities of the explosive agent are added to each drill hole to achieve a certain powder factor that varies based on the density of the rock being blasted and based on the intended rock product. Blasting is done with modern detonation methods to achieve millisecond delays between holes so as to minimize noise and vibration from the blast. 3.10 Haul Roads 6.4.4(j) Specify the dimensions of any existing or proposed roads that will be used for the mining operation. Describe any improvements necessary on existing roads and the specifications to be used in the construction of new roads. New or improved roads must be included as part of the affected lands and permitted acreage. Affected land sha/l not include off-site roads which existed prior to the date on which notice was given or permit application was made to the office and which were constructed for purposes unrelated to the proposed mining operation and which will not be substantially upgraded to support the mining operation. Describe any associated drainage and runoff conveyance structures to include sufficient information to evaluate structure sizing. There is an existing 100-foot wide haul road within the Existing Quarry as shown on Exhibit C-2. The existing haul road will be extended into the Spur Amendment area. The location of the Spur Amendment area haul road is presented in Exhibit C-3 but will vary based on operational considerations as the Spur Amendment develops. The Spur Amendment haul road will be 100 feet wide and will be constructed from available onsite materials. Discussion of drainage is presented in Exhibit G and Section 3.3 of this Exhibit. 3.11 Mining Map Cross-References 6.4.3. (a) all adjoining surface owners of record,� SEE MAP IN EXHIBIT C-2 PRE-MINING CONDITIONS 6.4.3. (b) the name and location of all creeks, roads, buildings, oil and gas wells and lines, and power and communication lines on the area of affected land and within two hundred (200) feet of all boundaries of such area; SEE MAP IN EXHIBIT C-2 PRE-MINING CONDITIONS 6.4.3. (c) the existing topography of the area with contour lines of sufficient detail to portray the direction and rate of slope of the affected land,� SEE MAPS IN EXHIBIT C-2 PRE-MINING CONDITIONS AND C-3 MINING MAP 6.4.3. (d) the total area to be involved in the operation, including the area to be mined and the area of affected lands (see definition of "Affected Land"); SEE MAP IN EXHIBIT C-3 MINING MAP AND ACREAGE TABLE SHOWN ON C-5 MINING DETAILS 6.4.3. (e) the fype of present vegetation covering the affected lands; and SEE FIGURE 1 BIOLOGICAL RESOURCES RPT (EXH. H, APP. H-1) AND EXHIBIT J VEGETATION 6.4.3.(� in conjunction with Exhibit G- Wafer Informafion, Rule 6.4.7, if required by the Office, further water resources information will be presented on a map in this section. SEE EXHIBIT G, FIGURE G-6 FIELD VERIFIED WELL LOCATIONS 6.4.3.(g) Show the owner's name, type of structures, and location of all significant, valuable, and permanent man- made structures contained on the area of affected land and within two hundred (200) feet of the affected land. SEE EXHIBIT C-1 COVER SHEET AND EXHIBIT C-4 EXISTING STRUCTURES 6.4.3.(h) In conjunction with Exhibit 1— Soils Information, Rule 6.4.9, soils information may be presented on a map in this section. SEE EXHIBIT I, APPENDIX I-1 FOR SOILS MAP QTETRA TEGH P a g e % I 9