and the optional sentence in paragraph SUBMITTALS,
SD-07 Certificates will be used. See the
appropriate DM or consult the Materials Engineer to
select prequalified sources, (1) and (2), sealed
bins, (3) and (4), or both options, (1), (2), (3)
and (4). Selection of the sealed bin method,
subparagraphs (3) and (4), must be fully justified
in the appropriate DM.
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If cement or pozzolan is to be obtained from more than one source, the
initial notification shall state the estimated amount to be obtained from
each source and the proposed schedule of shipments.
[a. Prequalified Cement Sources - Cement shall be delivered and used
directly from a mill of a producer designated as a qualified source.
Samples of cement for check testing will be taken at the project site
or concrete-producing plant by a representative of the Contracting
Officer for testing at the expense of the Government. A list of
prequalified cement sources is available from Director, U.S. Army Corps
of Engineers, Engineer Research and Development Center - Structures
Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180-6199, ATTN:
CEERD-SC.]
[b. Prequalified Pozzolan Sources - Pozzolan shall be delivered and
used directly from a producer designated as a qualified source.
Samples of pozzolan for check testing will be taken at the project site
by a representative of the Contracting Officer for testing at the
expense of the Government. A list of prequalified pozzolan sources is
available from the Director, U.S. Army Corps of Engineers, Engineer
Research and Development Center - Structures Laboratory, 3909 Halls
Ferry Road, Vicksburg, MS 39180-6199, ATTN: CEERD-SC.]
[c. Nonprequalified Cement Sources - Cement, if not from a
prequalified source, will be sampled at the source and stored in sealed
bins pending completion of testing. Sampling, testing, and the
shipping inspection from the point of sampling, when the point is other
than at the site of the work, will be made by or under the supervision
of the Government and at its expense. No cement shall be used until
notice has been given by the Contracting Officer that test results are
satisfactory. In the event of failure, the cement may be resampled and
tested at the request of the Contractor, at his expense. When the
point of sampling is other than at the site of the work, the fill gates
of the sampled bin and conveyances used in shipment will be sealed
under Government supervision and kept sealed until shipment from the
bin has been completed. If tested cement is rehandled at transfer
points, the extra cost of inspection shall be at the Contractor's
expense. The cost of testing cement excess to project requirements
shall also be at the expense of the Contractor. The charges for
testing cement at the expense of the Contractor will be deducted from
the payments due the Contractor at a rate of [_____] dollars per ton
(metric) (2000 lb) of cement represented by the tests.]
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NOTE: To fill in the blank for cost of testing
excess cement contact the Structures Laboratory,
Concrete Division at WES.
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SECTION 03301A
Page 16
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