Cleanup Verification Package for the 300-18 Waste Site Page: 3 of 58
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CVP-2005-00004
Rev. 0
Table ES-1. Summary of Cleanup Verification Results for the
300-18 Waste Site - Industrial Land Use.
Remedial
Requrement Remedial Action Goals Results Obectives
Attained?
Direct Exposure - Attain 15 mrem/yr dose rate above No radionuclide COCs were detected
Radionuclides background over 1,000 years. Attain above background levels.
the CERCLA risk range of 10~ to
10.6.
Direct Exposure - Attain individual COC RAGs. All individual COC concentrations are Yes
Nonradionuclides below the RAGs.
Meet Hazard quotient of <1 for Hazard quotients were not calculated
Nonradionuclide Risk noncarcinogens. because all nonradionuclide COCs
Requirements Cumulative hazard quotient of <1 for (arsenic, barium, beryllium, cadmium,
noncarcinogens. chromium, and lead) were detected
below statistical background levels.
Yes
Excess cancer risk of <1 x 10" for Excess cancer risks were not
individual carcinogens. calculated because all nonradionuclide
Attain a total excess cancer risk of carcinogenic COCs (arsenic, beryllium,
<1 x 105 for carcinogens. and cadmium) were detected below
statistical background levels.
Groundwater/River Attain single-COC groundwater and All single-COC groundwater and river
Protection - river protection RAGs. RAGs have been attained.
Radionuclides Attain National Primary Drinking No beta/gamma-emitting COCs were
Water Standards: 4 mrem/yr identified for this site.
(beta/gamma) dose rate to target
receptor/organs.
Meet drinking water standards for No beta/gamma-emitting COCs were Yes
nonuranium alpha emitters: the more identified for this site.
stringent of the 15 pCi/L MCL
or 1/25'h of the derived concentration
guide per DOE Order 5400.5.
Meet total uranium standard of Uranium statistical values are below
21.2 pCi/L.a background for this site.
Groundwater/River Attain individual nonradionuclide All the groundwater and river RAGs
Protection - groundwater and river cleanup have been attained. Yes
Nonradionuclides requirements.
Supporting Cleanup verification 95% UCL Calculation (Appendix C).b
Information Cleanup verification sample location design (Appendix C).C
a Based on the isotopic distribution of uranium in the Hanford Site background, the 30 pg/L MCL (65 Federal Register 76708)
corresponds to 21.2 pCi/L. Concentration-to-activity calculations are documented in Calculation of Total Uranium Activity
Corresponding to a Maximum Contaminant Level for Total Uranium of 30 Micrograms per Liter in Groundwater,
0100X-CA-V0038 (BHI 2001).
b 300-18 Cleanup Verification 95% UCL Calculation, 0300X-CA-V0053, Rev. 0, Bechtel Hanford, Inc., Richland, Washington.
300-18 Site Shallow Zone Sampling Plan, 0300X-CA-V0054, Rev. 0, Bechtel Hanford, Inc., Richland, Washington.
CERCLA = Comprehensive Environmental Response, Compensation, and Liability Act of 1980
COC = contaminant of concern
MCL = maximum contaminant level (drinking water standard)
RAG = remedial action goalES-2
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Capron, J. M. Cleanup Verification Package for the 300-18 Waste Site, report, August 26, 2005; United States. (https://digital.library.unt.edu/ark:/67531/metadc897202/m1/3/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.