ETL 1110-1-158
28 Feb 95
The project chemist must specify preservatives and holding times
that will be contractually required for the treatability study.
A table should be prepared for insertion into the SOW clearly
outlining each analytical protocol with this information. The
Contractor must summarize this information in the SAP. The
Contractor should be made aware that violation of either sample
preservation protocol or holding times may result in liability
for resampling, since either condition may result in samples
which are not representative of field conditions. The work plan
should discuss sample storage during the treatability study.
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2.5.5
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This section of the SOW should state the specific QA/QC
requirements for chemical testing. To assure data will be of
suitable accuracy to meet the project objectives, the QA/QC
requirements should be based on input from the project chemist,
design engineer, geologist, and technical manager. The SOW
should provide this information in a tabular form. The
Contractor must include this information in the SAP.
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2.5.5.1
QA Laboratory.
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In this section, the project chemist should specify which USACE
laboratory will be the QA laboratory for the project. If a QA
laboratory is deemed unnecessary by the chemist, delete this
section. If using external QA, state that the Contractor is
responsible for sending field generated QA samples to the
specified laboratory. The project chemist should generate a
table summarizing the number of QA samples to be sent to the QA
laboratory. The Contractor should include this in the SAP. The
project chemist should also summarize any requirements on
notifying the QA laboratory prior to shipment of samples.
Typically, the QA laboratory should be notified at least 2 days
in advance of shipping.
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2.5.5.2
QC Samples.
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This section should contain specifications as to the type and
number of QC samples to be generated. The Contractor should
include this information in the SAP.
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B-9
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