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KIRTLAND AIR FORCE BASE ALBUQUERQUE, NEW MEXICO ...

KIRTLAND AIR FORCE BASE ALBUQUERQUE, NEW MEXICO ...

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APPENDIX B<br />

SOP B2.3<br />

Subsurface Soil Sampling<br />

The following elements regarding soil borings should be considered when developing project-specific<br />

plans:<br />

All drilling will conform to state and local regulations. Permits, applications, and other<br />

documents required by state and local authorities will be obtained.<br />

The location of all borings will be approved in writing by the base before drilling<br />

commences.<br />

The drill rig will be decontaminated in accordance with SOP B1.10. Use of disposable<br />

equipment is preferred. If disposable equipment is unavailable, use of decontaminated<br />

equipment is allowed. Equipment shall be decontaminated per the requirements of SOP<br />

B1.10. All sampling equipment which may not be decontaminated should be disposed of in<br />

accordance with the project-specific addenda to the WMP (Appendix E of the BWP).<br />

The drill rig will not leak any fluids that may enter the hole or contaminate equipment that is<br />

placed in the hole. The use of rags or diapers to absorb leaking fluids is unacceptable. All<br />

leaking fluids will be caught in a proper container until the leak is repaired. If sample<br />

integrity could be comprised by leaking drill rig fluids, then sample operation may be shut<br />

down until the leak is repaired.<br />

No fluids will be used to advance soil borings.<br />

A standard penetration test will be performed each time a split spoon sample is taken. The<br />

test will be performed in accordance with ASTM D-1586. Sampling for lithologic logging<br />

should be continuous especially near ground surface in the area of potential contamination<br />

sources. The depth to which continuous lithologic sampling is completed will be determined<br />

on a site-by-site basis after review of site specific stratigraphic data collected during previous<br />

investigations. In most cases, the collection of continuous lithologic samples should begin at<br />

the ground surface and continue until the water table is encountered.<br />

NOTE: If soil samples are being collected for VOC or total organic carbon (TOC) analysis,<br />

those samples should be collected from the sampler prior to lithologic logging and any<br />

disturbance to the sample core.<br />

The method of continuous sample collection is dependent on the drilling method used.<br />

Common sampling methods include split-spoon samplers, thin-walled samplers, and core<br />

barrels. All of these sampling devices can be used with minimal disturbance of the sample.<br />

Sample collection for VOC and TOC analyses will be in accordance with U.S. EPA SW-846<br />

Method 5035 and NMED requirements. Samples will be collected using EnCore ® (or<br />

similar) samplers. If conditions exist that make the use of this type of sampler impractical<br />

(collection of samples from soil cuttings or dry or gravelly conditions), another method may<br />

be used and should be addressed in the project-specific work plan. If another method is used,<br />

such as a discrete grab sample collected in a 4-ounce jar, the sample should be collected prior<br />

to homogenization with as little disturbance as possible.<br />

Surface water and extraneous materials will not enter the boring.<br />

Kirtland AFB<br />

SOPs for Field Investigations B-83 April 2004

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