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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 />

General Methodology<br />

The well will be narrower in diameter than the DPT borehole, leaving annular space around<br />

the casing<br />

The well will be installed between 2 and 5 ft into the water table<br />

New PVC casing and screen will be used, decontaminated with a stream cleaner and rinsed<br />

with copious quantities of deionized water<br />

Installation of well materials will occur with clean decontaminated gloves<br />

The well will be sampled and removed within 48 hours of installation<br />

If left unattended or overnight, locking well caps should be used, or a seal should be used<br />

that can indicate tampering<br />

One volume of the sampling device will be purged prior to sampling<br />

Verify that the subcontractor has the necessary drilling and sampling equipment, as well as<br />

proper decontamination supplies.<br />

Confirm that sampling locations are staked and that the clearances from all on-Base and off-<br />

Base utilities have been obtained. Do not begin the sampling until proper digging permits<br />

have been obtained and all of the utilities have been marked.<br />

Locate the sample location and position the DPT rig. If the sample point is on thick asphalt<br />

or concrete, the DPT subcontractor will use a hammer-drill or equivalent to drill a hole<br />

through the pavement.<br />

Verify that the sampling tip has been properly decontaminated, as specified in SOP B1.10<br />

before beginning penetration.<br />

Soil Sampling Methodology<br />

For soil sampling, hydraulically advance the sampler to above the target sample interval,<br />

unlock the piston point, and advance the sampling device through the sampling interval.<br />

― Pull the rods using the hydraulic apparatus and remove the sample insert or split spoon.<br />

― Log the soil and collect the required samples as specified in the project specific<br />

addendum.<br />

Continue sampling at additional depth intervals or abandon the borehole, as appropriate for<br />

the location<br />

Groundwater Sampling Methodology<br />

If groundwater sampling is necessary, advance the sampler into the water table and collect a<br />

sample with the sampling device as specified in SOP B4.1.<br />

Kirtland AFB<br />

SOPs for Field Investigations B-90 April 2004

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