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WRRCSR No.1:10:83 Decontamination of Chromium Contaminated Soil and Water: Pearl Harbor Naval Shipyard, Pearl Harbor, Hawaii, Phase 2

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Title: WRRCSR No.1:10:83 Decontamination of Chromium Contaminated Soil and Water: Pearl Harbor Naval Shipyard, Pearl Harbor, Hawaii, Phase 2
Authors: Dugan, Gordon L.
Gee, Henry K.
Lau, L. Stephen
Keywords: chromium
soil contamination effects
soil treatment
Pearl Harbor Naval Shipyard
show 1 moreOahu
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LC Subject Headings: Chromium -- Environmental aspects.
Pearl Harbor (Hawaii)
Soil pollution -- Hawaii -- Oahu.
Soils -- Leaching.
Issue Date: Jan 1983
Publisher: Water Resources Research Center, University of Hawaii
Citation: Dugan GL, gee HK, Lau LS. 1983. Decontamination of chromium contaminated soil and water: Pearl Harbor Naval Shipyard, Pearl Harbor, Hawaii, phase 2. Honolulu (HI): Water Resources Research Center, University of Hawaii. WRRC special report, 1:10:83.
Series/Report no.: WRRC Special Reports
Abstract: Phase 2 of this project represents the analytical monitoring of an
estimated 64,800 ft^3 (1,835 m^3) of chromium-contaminated soil, classified
as a hazardous waste (>5 mg/l chromium extract concentration as measured by
the standard EP toxicity test), that was treated at the Pearl Harbor Naval
Shipyard during a two-month period in late 1982. Although the treatment
process details (wash-water-detention times, number of wash-water-flow through
times, and type and amount of chemicals) were the contractor's proprietary
information, the analytical monitoring treatment process essentially
followed the general treatment methods developed in Phase 1 (laboratory
and pilot plant studies). The treatment performed by Advanced Environmental
Consultants, Inc., of Pittsburgh, Pennsylvania consisted of utilizing
2 yd^3 (1.53 m^3) modified dumpsters as the soil receptacles, using upflow/
downflow washing to leach the chromium from the soil, adding a reducing
agent to chemically reduce chromium Cr+6 to Cr+3, raising the pH to approximately
8.5 to precipitate the chromium from solution and to dewater the
chromium laden sludge. Each processed soil batch (nearly all 2 yd^3 dumpster
units) were monitored for chromium extract. Only 35 of approximatley 1200
dumpster loads were above the 5-mg/l limit, and these were reprocessed.
Sponsor: U.S. Dept. of the Navy, Pac. Div. Naval Facilities Engrg. Command Pearl Harbor, Hawaii 96860 Grant/Contract No. N62742-82-C-0001
Pages/Duration: iv + 37 pages
Appears in Collections:WRRC Special Reports

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