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KIRTLAND AIR FORCE BASE ALBUQUERQUE, NEW MEXICO ...

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APPENDIX B<br />

SOP B7.1<br />

Approved Background Concentrations for Kirtland AFB<br />

This SOP provides the NMED-approved background values for soil and groundwater that should be used<br />

to evaluate the potential for contamination at sites across Kirtland AFB. Tables B7.1-1 through B7.1-5<br />

present the background values approved by NMED and presented in communication from the NMED-<br />

HWB in 1997 (NMED 1997). The Naval Facilities Engineering Command Guidance for Environmental<br />

Background Analysis, Volume I: Soil, April 2002 is available as a reference for the evaluation of<br />

background data. Background values are used for comparative purposes to assess the levels of inorganic<br />

and radiological parameters that naturally occur in soil and groundwater. Background values are used to<br />

screen chemicals of concern in human health and ecological risk assessments. Concentrations of<br />

inorganic and radiological parameters that exceed NMED-approved background values may indicate<br />

contamination at a site due to a previous release.<br />

Some parameters may not be accounted for in the list of NMED-approved background values. In cases<br />

where NMED-approved background values are not available, background values from literature may be<br />

used with approval from Kirtland AFB Environmental Management in concurrence with NMED.<br />

Literature values are often referenced from sources such as Element Concentrations in Soils and Other<br />

Surficial Materials of the Conterminous United States (Shacklette and Boerngen 1984). NMED has<br />

indicated that the Shacklette and Boerngen reference is suitable for use on Kirtland AFB projects in<br />

instances where background values are not available from NMED.<br />

References<br />

NMED, 1997. Letter from Robert S. Dinwiddie, Hazardous Waste Bureau (formerly Hazardous and<br />

Radioactive Materials Bureau [HRMB]), to Michael Zamorski, Acting Area Manager of the<br />

Kirtland Area Office for the Department of Energy. RE: Request for Supplemental Information:<br />

Background Concentrations Report, SNL/KAFB. September 24, 1997.<br />

Shacklette, H.T. and J.G. Boerngen, 1984. Element Concentrations in Soils and Other Surficial<br />

Materials of the Conterminous United States. U.S. Geological Survey, Professional Paper 1270.<br />

Kirtland AFB<br />

SOPs for Field Investigations B-161 April 2004

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