WELL DECOMMISSIONING/ABANDONMENT][left in place for future monitoring of
the well system].
1.8
GEOPHYSICAL LOGGING
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NOTE: The requirement to obtain borehole
geophysical surveys is optional. While it may not
be necessary to require a borehole geophysical
survey at a site where a great deal is known about
the subsurface, at another site, where very little,
or nothing is known, it may be prudent to require a
borehole geophysical survey. When it is deemed
necessary to require a borehole geophysical survey,
the specific type of survey should be specified.
This recommendation is made by the project
geologist. The project geologist should also
determine what geophysical logging may not be
allowed by state regulations, before specifying
them. See EM 1110-1-1802, Geophysical Exploration.
Guidance for planning and conducting borehole
geophysical logging may be found in ASTM D 5753.
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The total depth of each test hole drilled shall be geophysically logged.
Geophysical logging shall be documented in accordance with paragraph
Geophysical Logs. The Contractor shall run [one successful natural gamma
ray or gamma-gamma for the full depth, (top to bottom of test hole);] [one
successful neutron in the fluid filled portion of the hole, (top to bottom
of test hole);] [one successful (top to bottom of test hole) spontaneous
potential (self-potential);] [and,] [one successful (top to bottom of test
hole) resistivity log], for each test hole. Log analyses and
interpretations shall be made by a person qualified in accordance with
paragraph QUALIFICATIONS.
1.9
ABANDONMENT OF WELLS
If the Contractor fails to construct a well of the required capacity, or if
the well is abandoned because of loss of tools, or for any other cause, the
Contractor shall abandon the hole as specified in paragraph WELL
DECOMMISSIONING/ABANDONMENT.
1.10
NOTIFICATION
The [Installation Environmental Coordinator (IEC)] [_____] [and the]
Contracting Officer shall be notified [_____] days prior to drilling. The
[Contracting Officer] [Contractor] [Installation Environmental Coordinator
(IEC)] [_____] shall be responsible for contacting the [State of [_____]]
[USEPA] in accordance with the applicable reporting requirements. Before
beginning work, the local United States Geological Survey office (USGS)
[and the] [State Environmental Protection office] [State Geological Agency]
[state health department] [local health department] shall be notified of
the type and location of wells to be constructed, the method of
construction and anticipated schedule for construction of the wells.
1.11
DELIVERY, STORAGE, AND HANDLING
Well materials shall be stored and maintained in a clean, uncontaminated
condition throughout the course of the project. Filter pack material shall
SECTION 02521
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