Remaining Sites Verification Package for the 120-B-1, 105-B Battery Acid Sump, Waste Site Reclassification Form 2006-057 Page: 1 of 41
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Waste Site Reclassification Form
Date Submitted: Operable Unit(s): 100-BC-1 Control Number: 2006-057
Originator: Waste Site ID: 120-B-1 Lead Agency: EPA
L. M. Dittmer
Type of Reclassification Action:
Closed Out Q
Interim Closed Out 0
No Action Q
This form documents agreement among the parties listed below authorizing classification of the subject unit as
rejected, closed out, interim closed out, or no action and authorizing backfill of the site, if appropriate. Final
removal from the National Priorities List (NPL) of no action, interim closed-out, or closed-out sites will occur at a
Description of current waste site condition:
The 120-B-1 waste site, located in the 100-BC-1 Operable Unit of the Hanford Site, consisted of a concrete
battery acid sump that was used from 1944 to 1969 to neutralize the spent sulfuric acid from lead cell batteries of
emergency power packs and the emergency lighting system. The battery acid sump was associated with the
105-B Reactor Building and was located adjacent to the building's northwest corner. Confirmatory evaluation,
remediation, and verification sampling of this site have been performed in accordance with remedial action
objectives and goals established by the Interim Action Record of Decision for the 100-BC-1, 100-BC-2,
100-DR-1, 100-DR-2, 100-FR-1, 100-FR-2, 100-HR-1, 100-HR-2, 100-KR-1, 100-KR-2, 100-IU-2, 100-IU-6, and
200-CW-3 Operable Units, Hanford Site, Benton County, Washington (Remaining Sites ROD),
U.S. Environmental Protection Agency, Region 10, Seattle, Washington. The selected action involved
(1) evaluating the site using available process information and confirmatory sample data, (2) remediating the site,
(3) demonstrating through verification sampling that cleanup goals have been met, and (4) proposing the site for
classification as interim closed out.
Basis for reclassification:
The 120-B-1 waste site has been remediated to meet the remedial action objectives specified in the Remaining
Sites ROD. The results of verification sampling demonstrated that residual contaminant concentrations do not
preclude any future uses (as bounded by the rural-residential scenario) and allow for unrestricted use of shallow
zone soils (i.e., surface to 4.6 m [15 ft] deep). The results also showed that residual contaminant concentrations
are protective of groundwater and the Columbia River. This site does not have a deep zone; therefore, no deep
zone institutional controls are required. The basis for reclassification is described in detail in the Remaining Sites
Verification Package for the 120-B-1, 105-B Battery Acid S p ched).
D. C. Smith /,_____
DOE-RL Project Manager ign Date
Ecology Project Manager Sig ture Date
D. A. Faulk
EPA Project Manager nat re ate
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Dittmer, L. M. Remaining Sites Verification Package for the 120-B-1, 105-B Battery Acid Sump, Waste Site Reclassification Form 2006-057, report, September 25, 2006; United States. (https://digital.library.unt.edu/ark:/67531/metadc900471/m1/1/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.