APPENDIX C: SPOILS SAMPLE COLLECTION, STORAGE,
AND SHIPMENT SOP
Sample collection
Collection point: Spoils line, approximately 12 m upstream from crest of retention
pond berm.
Sampling access: 13-mm pitless adapter on side of spoils line. Ball valve shutoff.
Sample strategy: Composite sample method. Samples are taken at 15-minute inter-
vals by directing a stream of spoils from the spoils line through the
pitless adapter, valve and 1 m of Tygon tubing into a 19-L PE bucket.
After four samples have been taken, the volume is stirred and a
500-ml composite sample taken using a PE ladle. The sample con-
tainer is a clear, wide-mouth 500-ml glass sample jar, level 2A clean
(Eagle-Pitcher P/N 232-16C). Time, date and approximate dredge
location are noted. The bucket is then emptied and rinsed twice
with distilled water for reuse.
Sample storage
Temperature is not to exceed 15 C.
Temperature:
Location:
Samples are not to be stored in direct sunlight. Whenever possible,
they will be stored in a cooler.
Documentation: All samples are to be labeled. Documentation will reside with
samples whenever practicable. A duplicate set of documentation
will be retained by the P.I. or sampler.
Sample shipment
Samples are to be shipped overnight or second-day air, whichever
method is most practicable. Samples are to be shipped to ensure
temperature does not exceed 15 C. Adequate packing to ensure
sample integrity will be used. Containers are to be sealed with a
chain of custody document attached.
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