HomeMy WebLinkAbout1.15 Geologic and Soil Hazards ReportO\LOLSSON
ASSOCIATES
Geological and Soil Hazards Report
Larry D. Knox
Juniper Hills Private Landing Strip
OAProject No. 012 -1776
760 Horizon Drive, Suite 102 j Grand Junction, CO 81506 1 TEL 970.263.78001 FAX 970.263.7456
OkOLSSON
A S S O C I A T E S
GEOLOGIC AND SOIL HAZARDS REPORT
Introduction
Larry D. Knox has proposed construction of the Juniper Hills Airstrip to be located south of
Parachute and southeast of 1 -70 and the Colorado River, between Spring Creek to the northeast
and Wallace Creek to the southwest in Garfield County Colorado. The proposed location is in
Section 2 and 3, Township 8 South, Range 96 West, of the Sixth Principal Meridian. The vicinity
of this proposed Airstrip Facility is shown on a map provided as an attachment to this document.
The Juniper Hills Airstrip project is located in the Piceance Basin near the flanks of Battlement
Mesa, and will occupy 40.372 acres. It lies adjacent to areas undergoing natural gas
development by Noble Energy Inc., and Laramie Energy 11, LLC.
Geology
The proposed Airstrip Site is underlain by bedrock of the Tertiary age Wasatch Formation,
including the lower Fort Union Equivalent at the base and the Ohio Creek Formation. Part of
the proposed Airstrip lies within the early Quaternary gravels and alluvium deposits of pre Bull
Lake age.
Surficial Geology
The location of the proposed facility is underlain by bedrock of the Tertiary age Wasatch
Formation, including the lower Fort Union Equivalent at the base and the Ohio Creek Formation.
The Wasatch Formation is divided into an upper section that ranges from 400 to 1,600 feet
thickness, a middle section that ranges from 0 to 400 feet thickness, and a lower section that
ranges from 400 to 900 feet thickness. The upper section consists of variegated shale and clay
and some lenticular sandstone, conglomerate, and limestone beds. The middle section consists
of massive gray to brown fine -to coarse - grained sandstone, in part conglomeratic, and forms
conspicuous ledges where exposed in outcrop. The lower section is composed of variegated
shale and clay and some lenticular beds of sandstone, conglomerate, and limestone.
Larry D. Knox, Owner
Juniper Hills Airstrip
October 2012
1
Olsson Associates
Grand Junction, CO
OA Project # 012 -1776
Sincerely,
Olsson Associates inc.
William Monroe
Associate Geologist
Attachments: Figure V -1 — Vicinity/ Map
Figure S - 1 — Soils Map
Figure SH- 1 — Surface Hazards
Figure G -1 — Geology
References
Grout, Marilyn A. and Verbeek, Earl R., 1992, U.S.G.S. Bulletin 1787 -Z, Fracture History of the
Divide Creek and Wolf Creek Anticlines and Its Relation to Laramide Basin- Margin
Tectonism, Southern Piceance Basin, Northwestern Colorado, 32 p.
Online References
Colorado Oil and Gas Conservation Commission http: / /cogcc.state.co.us/
Natural Resources Conservation Service - Soil Survey http: / /www.nres.usda.gov/
Garfield County, Colorado - GIS Department http: / /www.garfield- county.com/
Larry D. Knox, Owner
Juniper Hills Airstrip
October 2012
3
Olsson Associates
Grand Junction, CO
OA Project # 012 -1776