| Abstract: | The design, construction, and performance analyses of a 6.1 ha evapotranspiration (ET) landfill cover at the semiarid U.S. Army Fort Carson site, near Colorado Springs, Colo. are presented. Initial water-balance model simulations, using literature reported soil hydraulic data, aided selection of borrow-source soil type(s) that resulted in predictions of negligible annual drainage (???1 mm/year). Final construction design was based on refined water-balance simulations using laboratory determined soil hydraulic values from borrow area natural soil horizons that were described with USDA soil classification methods. Cover design components included a 122 cm thick clay loam (USDA), compaction ???80% of the standard Proctor maximum dry density (dry bulk density ???1.3 Mg/m3), erosion control measures, top soil amended with biosolids, and seeding with native grasses. Favorable hydrologic performance for a 5 year period was documented by lysimeter-measured and Richards‘-based calculations of annual drainage that were all <0.4 mm/year. Water potential data suggest that ET removed water that infiltrated the cover and contributed to a persistent driving force for upward flow and removal of water from below the base of the cover. ?? 2009 ASCE. |
| Genre: | Article |
| ProdID: | 70032457 |
| Citation Author: | McGuire, P. E.; Andraski, B. J.; Archibald, R. E. |
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| Citation End Page: | 332 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geotechnical and Geoenvironmental Engineering |
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| Citation Number Of Pages: | 17 |
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| Citation Search Results Text: | Case study of a full-scale evapotranspiration cover; 2009; Article; Journal; Journal of Geotechnical and Geoenvironmental Engineering; McGuire, P. E.; Andraski, B. J.; Archibald, R. E. |
| Citation Start Page: | 316 |
| Citation Volume: | 135 |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Case study of a full-scale evapotranspiration cover; 2009; Article; Journal; Journal of Geotechnical and Geoenvironmental Engineering; McGuire, P. E.; Andraski, B. J.; Archibald, R. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1061/(ASCE)1090-0241(2009)135:3( |
| Date Other: | Thu, 1 Jan 2009 00:00 -0600 |
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