2024-01-31_REVISION - M1977344 ‎(3)‎

• Permit No: M1977344
• IBM Index Class Name: Revision
• Doc Date: 1/31/2024
• Doc Name Note: 1.0 Introduction and TOC
• Doc Name: Adequacy Review - Preliminary
• From: Holcim
• To: DRMS
• Type & Sequence: AM2
• Email Name: TC1
• Email Name: MAC
• Media Type: D
• Archive: No

Portland Limestone Quarries (M-1977-344) Permit Amendment-02
iv
Revised pursuant to preliminary adequacy review November 20, 2023

List of Figures
Figure 2.1-1 Parcel Configuration and Use ................................................................................................... 9
Figure 2.4.1.3-1 Fremont County Land Use Zoning Map ........................................................................... 68
Figure 2.4.1.3-2 Pueblo County Land Use Zoning Map ............................................................................. 68
Figure 2.4.2-1: Generalized stratigraphic section of the Bear Creek and Red Creek quarries .................. 69
Figure 2.4.3-1 Mine Plan Blocks ................................................................................................................. 72
Figure 2.4.5-2 Limestone bench mining cross section ............................................................................... 74
Figure 2.4.8-1: Example schematic of an infiltration gallery……………………………………………….…..75
Figure 2.4.4.1-1 MTAC Crossing Plan ………………………………………………………………………… 76
Figure 2.4.4.1-2 MTAC Crossing Minnequa Canal Plan ………..……………………………………………. 77
Figure 2.4.4.1-3 MTAC Cross Section and Plan View …………………………………………………………78
Figure 2.4.4.2-1 Quarry Office and Maintenance Shop Drawings A1 of 5………………………………….. 79
Figure 2.4.4.2-2 Quarry Office and Maintenance Shop Drawings A2 of 5………………………………….. 80
Figure 2.4.4.2-3 Quarry Office and Maintenance Shop Drawings A3 of 5………………………………….. 81
Figure 2.4.4.2-4 Quarry Office and Maintenance Shop Drawings A4 of 5………………………………….. 82
Figure 2.4.4.2-5 Quarry Office and Maintenance Shop Drawings A5 of 5………………………………….. 83
Figure 2.5.1-1 Cross-section of benched highwall and final reclamation slope 3H:1V .............................. 85
Figure 2.7.2-1: 2019 Site Reconnaissance Map ......................................................................................... 92
Figure 2.7.3-1: Groundwater Well Location Map…………………………………………………………….....93
Figure 2.7.4.2-1: Approximate location of the future POC well……………………………..…………………98

List of Tables
Table 2.4.3-1 Acres Affected Per 10 Years ................................................................................................ 70
Table 2.5.1-1 NRCS Reclamation Seed Mix ............................................................................................... 85
Table 2.7.1-1: Regulation 32 Water Quality Standards for COARUA14a……………………………………90
Table 2.7.1.4-1 Surface Water Analyte Lists .............................................................................................. 96
Table 2.7.4.1-2 Groundwater Analyte Lists…………………………………………………….………………..97
Table 2.10-1 Soils and Vegetation Data ................................................................................................... 151