2022-05-10_GENERAL DOCUMENTS - M1993041

• Permit No: M1993041
• IBM Index Class Name: General Documents
• Doc Date: 5/10/2022
• Doc Name: Special Use Permit
• From: Boulder County
• To: DRMS
• Email Name: JPL
• Email Name: JLE
• Media Type: D
• Archive: No

Do we Flats Quarry Soils and Geology Report
Table of Contents
1 Introduction............................................................................................................................. 1
2 Soils......................................................................................................................................... 1
2.1 Soil Classification & Descriptions................................................................................... 1
2.1.1 Main Soil Types of the Permit Area......................................................................... 1
2.1.1.1 Manvel Soils...................................................................................................... 1
2.1.1.2 LaPorte Soils...................................................................................................... 1
2.1.1.3 Gaynor Soils...................................................................................................... 2
2.1.2 Other Soils of the Permit Area.................................................................................. 2
2.2 Soil Salvage and Suitability............................................................................................. 2
2.3 Soil Impacts and Mitigation............................................................................................. 3
3 Geology................................................................................................................................... 3
3.1 Regional Geologic Setting ............................................................................................... 4
3.1.1 Regional Stratigraphy............................................................................................... 4
3.1.2 Regional Geologic Structure..................................................................................... 4
3.2 Dowe Flats Site Geology.................................................................................................. 4
3.2.1 Local Stratigraphy..................................................................................................... 4
3.2.1.1 Dakota Group .................................................................................................... 5
3.2.1.2 Benton Formation.............................................................................................. 5
3.2.1.3 Niobrara Formation ........................................................................................... 5
3.2.1.4 Pierre Shale........................................................................................................ 6
3.2.2 Local Structure.......................................................................................................... 6
4 References............................................................................................................................... 7
Appendices
AppendixA: Map Unit Descriptions.............................................................................................. 9
i May 2, 2022