Faculty Mentor
Richard Orndorff
Presentation Type
Poster
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 back to its native habitat. The land is currently leased as a no till annual wheat field. The soil lies atop Pleistocene loess from the Cordilleran Ice Sheet and glaciofluvial deposits from the Great Missoula Floods. There were 9 different soil samples collected from the Palouse prairie restoration project area. Group 7 analyzed soil sample PP-7 collected at 47.492747°N, -117.593442°W, on September 21st, 2023, and over 10 weeks, tested the specific gravity (ASTM D854), particle size distribution (ASTM D422, D7928), soil plasticity (ASTM D4318), soil compaction (ASTM D698), unconfined compressive strength (ASTM D2166), and determined the Unified Soil Classification System (USCS) designation. These soils were tested to determine what areas could hold certain infrastructure as EWU plans on building a welcome center and a trail system throughout the project area of interest in the next couple of years. The characteristics of sample PP-7 conclude poor quality soil pertaining to infrastructure due to its low liquid limit according to USCS.
Recommended Citation
Lawrence, Jessica M.; Fergen, Sydney; Valentine, Kai L.; and Smith, Annika, "Geotechnical Analysis of Soil Sample PP-7 from the EWU Palouse Prairie Restoration Site, Cheney, WA" (2024). 2024 Symposium. 10.
https://dc.ewu.edu/srcw_2024/works_2024/works_2024/10
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Included in
Geotechnical Analysis of Soil Sample PP-7 from the EWU Palouse Prairie Restoration Site, Cheney, WA
The Eastern Washington University Palouse Prairie Restoration Project is a program set to restore 120 acres of Palouse prairie back to its native habitat. The land is currently leased as a no till annual wheat field. The soil lies atop Pleistocene loess from the Cordilleran Ice Sheet and glaciofluvial deposits from the Great Missoula Floods. There were 9 different soil samples collected from the Palouse prairie restoration project area. Group 7 analyzed soil sample PP-7 collected at 47.492747°N, -117.593442°W, on September 21st, 2023, and over 10 weeks, tested the specific gravity (ASTM D854), particle size distribution (ASTM D422, D7928), soil plasticity (ASTM D4318), soil compaction (ASTM D698), unconfined compressive strength (ASTM D2166), and determined the Unified Soil Classification System (USCS) designation. These soils were tested to determine what areas could hold certain infrastructure as EWU plans on building a welcome center and a trail system throughout the project area of interest in the next couple of years. The characteristics of sample PP-7 conclude poor quality soil pertaining to infrastructure due to its low liquid limit according to USCS.
