FINAL SAMPLING AND ANALYSIS PLAN - Documents for Moffett Field

WORKSHEET #27: SAMPLE CUSTODY REQUIREMENTS
The integrity of data obtained for samples collected in the field and those created in the lab
for the bench test depends on adherence to proper procedures for sample management
involving both proper labeling and handling of samples.
27.1 Sample Name Assignment
Sample names will be unique alpha numeric codes assigned by AMEC, with a maximum
length of 40 characters. The following designations will be used for samples associated
with this project:
• Event-matrix-XXXX
“Event” refers to either the baseline/pre-construction (PC) or post-construction
confirmation (CO) stage of work; “matrix” refers to the matrix of the sample; and
“XXXX” refers to three-digit sequential integer number assignment for this project. For integers
less than ten, the first two characters will be “00”, and for less than one hundred, the first
character will be”0”. For example, the first soil sample collected from the pre-construction
event would be assigned the sample name “PC- SO-001.”
All coded sample names, will be recorded in the field on the “Sample Record Form”
(Appendix B).
27.2 Field Sample Collection
To limit sample contamination during sample collection and handling, field staff will wear
a clean new pair of disposable nitrile gloves each time a different sample is collected. Field
staff will not touch the inside of the sample container or lid during sample collection.
27.3 Field Sample Container Custody
All sample collection containers will be laboratory-supplied and pre-preserved (if required
by method). The sample jars will be delivered in sealed containers to the AMEC Project
Field Office at Moffett Field by laboratory personnel or by a common carrier (e.g. FedEx).
The laboratory will include a list of the containers shipped and the purpose of each
container.
27.4 Field Sample Identification Procedures
Samples will be identified with water-proof labels pre-printed with analytical methods,
project name, and project number. Field staff will add the sample name, sample date, and
sample time to the label in ink at the time the sample is collected. All coded sample names
Final Sampling and Analysis Plan
Installation Restoration Site 29, Hangar 1
Former Naval Air Station, Moffett Field, Moffett Field, California
DCN: AMEC-8816-0005-0039
April 2010
Page 27-1