1、Designation:D669916Standard Practice forSampling Liquids Using Bailers1This standard is issued under the fixed designation D6699;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indica
2、tes the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the procedure for sampling strati-fied or un-stratified waters and liquid waste using bailers.1.2 Three specific bailers are discussed in this pra
3、ctice.Thebailers are the single and double check valve and differentialpressure.1.3 This standard does not cover all of the bailing devicesavailable to the user.The bailers chosen for this practice aretypical of those commercially available.1.4 This practice should be used in conjunction with GuideD
4、4687,Practice D5088,and Practice D5283.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limi
5、tations prior to use.2.Referenced Documents2.1 ASTM Standards:2D4448 Guide for Sampling Ground-Water Monitoring WellsD4687 Guide for General Planning of Waste SamplingD5088 Practice for Decontamination of Field EquipmentUsed at Waste SitesD5283 Practice for Generation of Environmental Data Re-lated
6、to Waste Management Activities:Quality Assuranceand Quality Control Planning and ImplementationD5681 Terminology for Waste and Waste ManagementD5792 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Development ofData Quality ObjectivesD6051 Guide for Composite Sa
7、mpling and Field Subsam-pling for Environmental Waste Management ActivitiesD6232 Guide for Selection of Sampling Equipment forWaste and Contaminated Media Data CollectionActivitiesD6517 Guide for Field Preservation of GroundwaterSamplesD6564 Guide for Field Filtration of Groundwater SamplesD6634 Gui
8、de for Selection of Purging and Sampling De-vices for Groundwater Monitoring WellsD6771 Practice for Low-Flow Purging and Sampling forWells and Devices Used for Ground-Water Quality Inves-tigations(Withdrawn 2011)3D7929 Guide for Selection of Passive Techniques for Sam-pling Groundwater Monitoring W
9、ells2.2 EPA Standard:EPA SW 846 Test Methods for Evaluating Solid Waste:Physical/Chemical Methods3.Terminology3.1 See Terminology D5681.4.Summary of Practice4.1 A clean bailer is lowered into the liquid to be sampledusing a suspension line(see Fig.1).The bailer chamber isallowed to fill with the sam
10、ple.The check valve or valves onbailers close when the bailer stops.The bailer is raised to thesurface where the sample is discharged into a clean samplecontainer.5.Significance and Use5.1 A bailer is a device for obtaining a sample fromstratified or un-stratified waters and liquid wastes.The mostco
11、mmon use of a bailer is for sampling ground water fromsingle-screened wells(Fig.1)and well clusters(see GuideD4448).5.2 This practice is applicable to sampling water and liquidwastes.The sampling procedure will depend on sampling planand the data quality objectives(DQOs)(Practice D5792).5.3 Bailers
12、may be used to sample waters and liquid wastesin underground and above ground tanks and surface impound-ments.However,the design of the unit and associated pipingshould be well understood so that the bailer can access the1This practice is under the jurisdiction of ASTM Committee D34 on WasteManageme
13、nt and is the direct responsibility of Subcommittee D34.01.03 onSampling Equipment.Current edition approved Sept.1,2016.Published October 2016.Originallyapproved in 2001.Last previous edition approved in 2010 as D6699 01(2010).DOI:10.1520/D6699-16.2For referenced ASTM standards,visit the ASTM websit
14、e,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 B
15、arr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 desired compartment and depth.Any stratification of the liquidshould be identified prior to sampling.NOTE1Viscous liquids and suspended solids may interfere with abailers designed operation.5.4 Bailers do not subject the sam
16、ple to pressure extremes.Bailing does disturb the water column and may cause changesto the parameters to be measured(for example,turbidity,gases,etc.).5.5 The use of bailers in low flow wells for purging canresult in increased agitation and turbidity in the sample and canintroduce errors into the sample if the water surface level isdrawn down below the top of the screen.In such cases,alternate methods of sampling such as Passive Sampling(Guide D7929)or Low Flow Sampling(Practice D6771)should be
