FINAL SAMPLING AND ANALYSIS PLAN - Documents for Moffett Field
FINAL SAMPLING AND ANALYSIS PLAN - Documents for Moffett Field
FINAL SAMPLING AND ANALYSIS PLAN - Documents for Moffett Field
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4 Worksheet #15 - Reference<br />
Limits and Evaluation Table,<br />
Tables 15-1 and 15-4, Pages<br />
15-1 and 15-4<br />
5 Worksheet #15 - Reference<br />
Limits and Evaluation Table,<br />
Table 15-4, Page 15-4<br />
6 Worksheet #15 - Reference<br />
Limits and Evaluation Table,<br />
Table 15-7, Page 15-6<br />
7 Worksheet #15 - Reference<br />
Limits and Evaluation Table,<br />
Pages 15-1 through 15-3<br />
quantitation result by a second<br />
analysis of 10% of the analyzed<br />
samples).<br />
It is unclear if the PALs, QLs, and<br />
MDLs presented on this table are<br />
given on a dry weight or wet weight<br />
basis. Revise the SAP to clarify this<br />
in<strong>for</strong>mation.<br />
The acronym RSL stands <strong>for</strong><br />
"Regional" Screening Level.<br />
It is unclear if total Aroclors will be<br />
determined by adding individual<br />
Aroclor concentrations or if the area<br />
under the entire chromatogram will<br />
be quantified. If total Aroclor<br />
concentrations will be determined<br />
additively, it is unclear if and how<br />
non-detected results will be<br />
incorporated into the calculation<br />
(e.g., non-detects will be set at zero,<br />
the QL, or one half the QL, etc.).<br />
Revise this worksheet to describe<br />
how total Aroclor concentrations<br />
will be determined and how nondetected<br />
results will be<br />
incorporated.<br />
The project action limit listed <strong>for</strong><br />
asbestos, 1 %, is not considered<br />
health protective. In the event that<br />
fill will be imported, the Navy will<br />
have to work with the EPA to<br />
develop a more health protective<br />
process <strong>for</strong> screening asbestos in<br />
fill.<br />
Soil and sediment samples <strong>for</strong> this<br />
project will be reported on a dry<br />
weight basis. A footnote will be<br />
added to Table 15-1 and 15-4 to<br />
clarify this in<strong>for</strong>mation.<br />
Comment noted. The acronym will<br />
be revised.<br />
Total Aroclors will be determined<br />
by adding individual Aroclor<br />
concentrations. For this project,<br />
the laboratory will report detected<br />
concentration between method<br />
detection limit (MDL) and<br />
quantitation limit (QL) as<br />
estimated. If an Aroclor is not<br />
detected, the MDL value will be<br />
used to determine total Aroclor<br />
concentration.<br />
The project action limit <strong>for</strong><br />
asbestos will be revised to 0.25<br />
percent, as recommended by EPA.<br />
Response to Comments on Draft Sampling and Analysis Plan<br />
<strong>Moffett</strong> <strong>Field</strong>, Cali<strong>for</strong>nia<br />
DCN: AMEC-8816-0005-0040<br />
April 2010<br />
Page 9 of 10
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