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Title: Excavation/Fill/Soil Disturbance, Self-Study #31419

  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Country of Publication:
United States

Citation Formats

Grogin, Phillip W. Excavation/Fill/Soil Disturbance, Self-Study #31419. United States: N. p., 2018. Web. doi:10.2172/1422894.
Grogin, Phillip W. Excavation/Fill/Soil Disturbance, Self-Study #31419. United States. doi:10.2172/1422894.
Grogin, Phillip W. 2018. "Excavation/Fill/Soil Disturbance, Self-Study #31419". United States. doi:10.2172/1422894.
title = {Excavation/Fill/Soil Disturbance, Self-Study #31419},
author = {Grogin, Phillip W.},
abstractNote = {},
doi = {10.2172/1422894},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2018,
month = 2

Technical Report:

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  • Second-year results are presented from three separate studies concerned with reclamation of borrow pits using specific mycorrhizal fungi and various soil amendments. Study I demonstrates that container grown loblolly pine (Pinus taeda) seedlings inoculated with certain ectomycorrhizal fungi respond to soil amended with sewage sludge, but not to inorganic fertilizer applied at a rate of 500 lbs/acre of 10-10-10. In Study II, the average volume of nursery produced loblolly pine seedlings is greater on plots amended with sewage sludge than plots amended with fertilizer and lime. Other amendments, i.e., bark, flys ash, and various combinations of these materials, had nomore » effect. Up to 1/2 inch of ash did not slow tree growth, however, indicating the possibility of utilizing this waste product as a soil amendment. Study III indicates that endomycorrhizae inoculated sweetgum (Liquidambar styraciflua) seedlings will continue to grow on plots amended with more than 1/4 inch of sewage sludge. On all study plots, biomass yield of fescue grass was significantly greater on sludge amended plots. Third-year field data will be collected during December 1978.« less
  • Analysis of the air impacts associated with cleaning up Superfund sites is frequently required prior to actual cleanup. Such analyses depend on estimates rather than on field measurements. This report provides procedures for estimating the emissions of volatile organic compounds (VOC) and the ambient air concentrations associated with the excavation of contaminated soil. Excavation is an integral part of any Superfund site remediation that involves removal or ex-situ treatment such as incineration, thermal desorption, bioremediation, or solidification/stabilization. The report contains procedures to evaluate the effect of the concentration of the contaminants in the soil and the excavation rate on themore » emission rates and on the ambient air concentrations at selected distances from the excavation site. Health-based ambient air action levels are also provided for comparison to the estimated ambient concentrations.« less
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  • The isolation of nuclear wastes in deep, mined repositories will require the sealing of all penetrations such as shafts, tunnels, or boreholes, into or nearby the repository. An important consideration in penetration sealing is the disturbed zone, or zone of increased permeability, which may be created in the rock mass adjacent to the penetration as a result of excavation. Disturbed zone characteristics for shafts, tunnels, and boreholes are evaluated by analysis and by review of previous laboratory and field tests. Consideration is given also to test methods for characterizing the disturbed zone in situ, and to methods for treating themore » disturbed zone in seal construction. Laboratory tests indicate that the disturbed zone associated with small-diameter boreholes is probably insignificant. In contrast, the disturbed zone is potentially a significant pathway for flow through seals placed in shafts and tunnels. Because a major mechanism for disturbance is believed to be stress relief acting across fractures, much of the disturbance occurs regardless of the excavation method used. Various test methods are proposed for disturbed zone characterization in shafts and tunnels, with seismic refraction identified as a promising index test. A proposed method for treating the disturbed zone uses cutoffs constructed as a series of overlapping boreholes. Each hole is filled with concrete which is allowed to cure before the adjacent holes are drilled.« less
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