Geotechnical Analysis of Soil Sample PP-7 from EWU Palouse Prairie Restoration Site, Cheney, WA
Faculty Mentor
Richard Orndorff
Presentation Type
Poster
Start Date
5-8-2024 11:15 AM
End Date
5-8-2024 1:00 PM
Location
PUB NCR
Primary Discipline of Presentation
Geosciences
Abstract
The Eastern Washington University Palouse Prairie Restoration Project is a program set to restore 120 acres of Palouse Prairie to its native habitat, though currently leased as a no-till annual wheat field. The sand with silty fine soil lies atop 15,000-year-old Pleistocene loess and glaciofluvial deposits associated with the Channeled Scablands from the Great Missoula Floods. There were 9 different soil samples collected from the Palouse Prairie Restoration Project area. On Sept 21st, 2023, Group 7 collected soil sample PP-7 from 47.492747degreesN, -117.593442degreesW, and over 10 weeks, tested the specific gravity (ASTM D854), particle size distribution (ASTM D422, D7928), soil plasticity (ASTM D4318), soil compaction (ASTM D698), and unconfined compressive strength (ASTM D2166), to designate the Unified Soil Classification System (USCS). These soils were tested to determine what areas could maintain infrastructure related to restoration. Soil sample PP-7 displayed quantitative characteristics associated with poor soil stability, due to its low liquid limit according to the USCS.
Recommended Citation
Lawrence, Jessica M.; Valentine, Kai; Smith, Annika; and Fergen, Sydney, "Geotechnical Analysis of Soil Sample PP-7 from EWU Palouse Prairie Restoration Site, Cheney, WA" (2024). 2024 Symposium. 26.
https://dc.ewu.edu/srcw_2024/ps_2024/p2_2024/26
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Geotechnical Analysis of Soil Sample PP-7 from EWU Palouse Prairie Restoration Site, Cheney, WA
PUB NCR
The Eastern Washington University Palouse Prairie Restoration Project is a program set to restore 120 acres of Palouse Prairie to its native habitat, though currently leased as a no-till annual wheat field. The sand with silty fine soil lies atop 15,000-year-old Pleistocene loess and glaciofluvial deposits associated with the Channeled Scablands from the Great Missoula Floods. There were 9 different soil samples collected from the Palouse Prairie Restoration Project area. On Sept 21st, 2023, Group 7 collected soil sample PP-7 from 47.492747degreesN, -117.593442degreesW, and over 10 weeks, tested the specific gravity (ASTM D854), particle size distribution (ASTM D422, D7928), soil plasticity (ASTM D4318), soil compaction (ASTM D698), and unconfined compressive strength (ASTM D2166), to designate the Unified Soil Classification System (USCS). These soils were tested to determine what areas could maintain infrastructure related to restoration. Soil sample PP-7 displayed quantitative characteristics associated with poor soil stability, due to its low liquid limit according to the USCS.
