ASTM D5495-03(2007)
(Practice)Standard Practice for Sampling With a Composite Liquid Waste Sampler (COLIWASA)
Standard Practice for Sampling With a Composite Liquid Waste Sampler (COLIWASA)
SIGNIFICANCE AND USE
This practice is applicable to sampling liquid wastes and other stratified liquids. The COLIWASA is used to obtain a vertical column of liquid representing an accurate cross-section of the sampled material. To obtain a representative sample of stratified liquids, the COLIWASA should be open at both ends so that material flows through it as it is slowly lowered to the desired sampling depth. The COLIWASA must not be lowered with the stopper in place. Opening the stopper after the tube is submerged will cause material to flow in from the bottom layer only, resulting in gross over-representation of that layer.
This practice is to be used by personnel acquiring samples.
This practice should be used in conjunction with Guide D4687 which covers sampling plans, safety, QA, preservation, decontamination, labeling and chain-of-custody procedures; Practice D5088 which covers decontamination of field equipment used at waste sites; Practice D5283 which covers project specifications and practices for environmental field operations, and Practice D5743 which covers drum sampling..
SCOPE
1.1 This practice describes the procedure for sampling liquids with the composite liquid waste sampler, or “COLIWASA.” The COLIWASA is an appropriate device for obtaining a representative sample from stratified or unstratified liquids. Its most common use is for sampling containerized liquids, such as tanks, barrels, and drums. It may also be used for pools and other open bodies of stagnant liquid.
Note 1—A limitation of the COLIWASA is that the stopper mechanism may not allow collection of approximately the bottom inch of material, depending on construction of the stopper.
1.2 The COLIWASA should not be used to sample flowing or moving liquids.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D5495–03 (Reapproved 2007)
Standard Practice for
Sampling With a Composite Liquid Waste Sampler
(COLIWASA)
This standard is issued under the fixed designation D5495; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Practice
1.1 This practice describes the procedure for sampling 3.1 A clean device is slowly lowered into the liquid to be
liquids with the composite liquid waste sampler, or “COLI- sampled.After it has filled, the bottom of the sampling tube is
WASA.” The COLIWASAis an appropriate device for obtain- closed and the device is retrieved. The contents are subse-
ing a representative sample from stratified or unstratified quently discharged into a sample container.
liquids. Its most common use is for sampling containerized
4. Significance and Use
liquids, such as tanks, barrels, and drums. It may also be used
for pools and other open bodies of stagnant liquid. 4.1 Thispracticeisapplicabletosamplingliquidwastesand
other stratified liquids. The COLIWASA is used to obtain a
NOTE 1—AlimitationoftheCOLIWASAisthatthestoppermechanism
verticalcolumnofliquidrepresentinganaccuratecross-section
may not allow collection of approximately the bottom inch of material,
of the sampled material. To obtain a representative sample of
depending on construction of the stopper.
stratified liquids, the COLIWASAshould be open at both ends
1.2 The COLIWASA should not be used to sample flowing
so that material flows through it as it is slowly lowered to the
or moving liquids.
desired sampling depth. The COLIWASAmust not be lowered
1.3 This standard does not purport to address all of the
with the stopper in place. Opening the stopper after the tube is
safety problems, if any, associated with its use. It is the
submerged will cause material to flow in from the bottom layer
responsibility of the user of this standard to establish appro-
only, resulting in gross over-representation of that layer.
priate safety and health practices and determine the applica-
4.2 This practice is to be used by personnel acquiring
bility of regulatory limitations prior to use.
samples.
4.3 This practice should be used in conjunction with Guide
2. Referenced Documents
D4687 which covers sampling plans, safety, QA, preservation,
2.1 ASTM Standards:
decontamination, labeling and chain-of-custody procedures;
D4687 Guide for General Planning of Waste Sampling
Practice D5088 which covers decontamination of field equip-
D5088 Practice for Decontamination of Field Equipment
ment used at waste sites; Practice D5283D5283 which covers
Used at Waste Sites
project specifications and practices for environmental field
D5283 Practice for Generation of Environmental Data Re-
operations, and Practice D5743 which covers drum sampling.
lated to Waste Management Activities: Quality Assurance
and Quality Control Planning and Implementation
5. Sampling Equipment
D5743 Practice for Sampling Single or Multilayered Liq-
5.1 COLIWASAs are available commercially with different
uids, With or Without Solids, in Drums or Similar Con-
types of stoppers and locking mechanisms, but they all operate
tainers
using the same principle. They can also be constructed from
D6232 Guide for Selection of Sampling Equipment for
materials such as polyvinylchloride (PVC), glass, metal, or
Waste and Contaminated Media Data CollectionActivities
polytetrafluoroethylene (PTFE). A traditional model of the
,
3 4
COLIWASAisshowninFig.1[deVeraetal.] ;however,the
design can be modified or adapted, or both, to meet the needs
This practice is under the jurisdiction of ASTM Committee D34 on Waste
Management and is the direct responsibility of Subcommittee D34.01.03 on
Sampling Equipment.
Current edition approved Oct. 1, 2007. Published October 2007. Originally
approved in 1994. Last previous edition approved in 2003 as D5495-03. DOI: de Vera, E. R., Simmons, B. P., Stephens, R. C., and Storm, D. L., “Samplers
10.1520/D5495-03R07. and Sampling Procedures for Hazardous Waste Streams,” EPA-600/2-80-018,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or January 1980.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Ford, P. J., Turina, P. J., and Seeley, D. E., “Characterization of Hazardous
Standards volume information, refer to the standard’s Document Summary page on WasteSites—AMethodsManual:VolumeII,”AvailableSamplingMethods,Second
the ASTM website. Edition, EPA-600/4-84-076, December 1984.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D5495–03 (2007)
FIG. 1 Composite Liquid Waste Sampler (COLIWASA) (Typical)
of the sampler. COLIWASAs must be selected that are con- about the
...
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