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2024-01-31_REVISION - M1977344 (18)
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2024-01-31_REVISION - M1977344 (18)
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Last modified
2/7/2024 8:24:25 AM
Creation date
2/6/2024 8:37:56 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977344
IBM Index Class Name
Revision
Doc Date
1/31/2024
Doc Name Note
2.4 Exhibit D - Mining Plan
Doc Name
Adequacy Review - Preliminary
From
Holcim
To
DRMS
Type & Sequence
AM2
Email Name
TC1
MAC
Media Type
D
Archive
No
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<br /> <br />Portland Limestone Quarries (M-1977-344) Permit Amendment-02 <br />Holcim US Inc, 3500 Highway 120, Florence, CO 81226 Revised pursuant to preliminary adequacy review November 20, 2023 <br />Phone (719) 288-1443 www.holcim.us 67 <br />2.4 Exhibit D: Mining Plan (Rule 6.4.4) <br />A limestone quarry and four (4) generations of cement plants have been operating east of Florence, CO <br />since the late 1890’s. The current plant facility (Plant No. 4) increased production in 2001. About <br />3,200,000 tons of limestone are required per year to supply the current plant. Sandstone is supplied from <br />a smaller quarry established into the floor of the limestone quarry and is extracted at an annual rate of <br />approximately 120,000 tons. Other raw materials are purchased. <br />The purpose of this amendment application is to increase the permit/affected area boundary to include a <br />new limestone resource to be known as Red Creek Quarry (RCQ). The current permit includes Bear <br />Creek Quarry and the Portland Plant Area. The mine plan and all supporting documents are provided in <br />the approved permit M-1977-344 Amendment 1. <br />2.4.1 Surface Description <br />2.4.1.1 Location <br />The mineral resource of RCQ is located on six (6) land sections. Two sections are in Fremont County <br />along with the MTAC. Four sections are in Pueblo County along with the Hwy 96 Access. RCQ is 6.35 <br />miles southeast of the Holcim plant. The proposed permit boundary and affected area boundary are the <br />same, encompassing an additional 4078.72 acres. <br />RCQ is located on Holcim property in Section 24 and 25, T.20.S and R.68.W in Fremont County and <br />Sections 19, 20, 29, and 30 in T.20.S and R.67.W in Pueblo County of the USGS Hobson Quadrangle, <br />Colorado (Figure 2.1-1). The quarry property consists of 6 USGS Sections totaling 3,851.05 Acres. A 250- <br />foot-wide access corridor connects the quarry property to the Portland plant site that includes 222.23 <br />acres. <br />2.4.1.2 Topography and Elevation <br />RCQ lies within vast ranch lands that stretch from the Wet Mountains east to the Pueblo Reservoir. The <br />mine area is south of the Arkansas River, along and south of Red Creek with its tributaries, and north of <br />Highway 96 (Section 2.2: Exhibit B). The area is characterized by high desert with moderate semi-arid <br />climate. Elevations range from about 5,116 to 5,310 feet above sea level. <br />2.4.1.3 Land Use and Existing Conditions <br />RCQ includes RP1 in Section 24 that was permitted for dimensional stone extraction. Much of the section <br />is undisturbed native grasses that are used for cattle ranching. Less than 10 acres of Section 24 is <br />disturbed with small piles of dimensional stone and a working face with a staging area. RP1 has no <br />existing structures. <br />Existing conditions and structures for RCQ are minimal. Access relies on interior ranch roads both north to <br />the plant and south to Hwy 96. The Minnequa Canal is located along the northeast corner, outside the <br />proposed permit boundary. Existing structures include barbed wire fences, electricity distribution lines and <br />cattle watering conveyance systems that deliver water to cattle troughs. <br />Fremont County zoning in the area is Agricultural Forestry (Figure 2.4.1.3 -1). This zone district is <br />described in the Fremont County Zoning Resolution as a “Non-urban area established primarily for the <br />purpose of efficiently using land to conserve forest resources, protect the natural environment and <br />preserve uninhabited areas and to allow for farming and ranching activities.” Mining is permitted as a <br />Conditional Use in Section 4.1 pg. 4-4.1.8 (Fremont County, Department of Planning and Zoning 2020). <br />Pueblo County zoning in the area is A-1 Agricultural (Figure 2.4.1.3-2). This zone district is described in <br />the Pueblo County Zoning Resolution as an area “designed to retain and promote the appropriate use of <br />dry range and irrigated lands and encourage open use of the land in keeping with its natural
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