1、Designation:D735207(Reapproved 2012)Standard Practice forDirect Push Technology for Volatile Contaminant Loggingwith the Membrane Interface Probe(MIP)1,2This standard is issued under the fixed designation D7352;the number immediately following the designation indicates the year oforiginal adoption o
2、r,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This standard practice describes a method for rapiddelineation of volatile organic co
3、ntaminants(VOC)in thesubsurface using a membrane interface probe.Logging withthe membrane interface probe is usually performed with directpush equipment.1.2 This standard practice describes how to obtain a realtime vertical log of volatile organic contaminants with depth.The data obtained is indicat
4、ive of the total volatile organiccontaminant concentration in the subsurface at depth.1.3 Other sensors,such as electrical conductivity,fluores-cence detectors,and cone penetration tools may be included toprovide additional information.The use of a lithologic loggingtool is highly recommended to def
5、ine hydrostratigraphicconditions,such as migration pathways,and to guide confir-mation sampling.1.4 LimitationsThe MIP system does not provide speci-ficity of analytes.This tool is to be used as a total volatileorganic contaminant-screening tool.Soil and/or water sam-pling(Guides D6001,D6282,D6724,a
6、nd Practice D6725)must be performed to identify specific analytes and exactconcentrations.Only VOCs are detected by the MIP system inthe subsurface.Detection limits are subject to the selectivity ofthe gas phase detector applied and characteristics of theformation being penetrated(for example,clay a
7、nd organiccarbon content).1.5 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunctionwith professional judgment.Not all aspects of this practice maybe applicable in all circumstance
8、s.This ASTM standard is notintended to represent or replace the standard of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without the considerationof a projects many unique aspects.The word“standard”in thetitle means that the document ha
9、s been approved through theASTM consensus process.1.6 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 regu
10、latory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3D653 Terminology Relating to Soil,Rock,and ContainedFluidsD5299 Guide for Decommissioning of Groundwater Wells,Vadose Zone Monitoring Devices,Boreholes,and OtherDevices for Environmental ActivitiesD6001 Guide for Direct-Push G
11、roundwater Sampling forEnvironmental Site CharacterizationD6282 Guide for Direct Push Soil Sampling for Environ-mental Site CharacterizationsD6724 Guide for Installation of Direct Push GroundwaterMonitoring WellsD6725 Practice for Direct Push Installation of PrepackedScreen Monitoring Wells in Uncon
12、solidated AquifersE355 Practice for Gas Chromatography Terms and Relation-ships3.Terminology3.1 Terminology used within this practice is in accordancewith Terminology D653 with the addition of the following:3.2 Definitions:3.2.1 carry overretention of contaminant in the membraneand trunkline which m
13、ay result in false positive results or anincreased detector baseline at subsequent depth intervals.1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition appro
14、ved Oct.15,2012.Published November 2012.Originallyapproved in 2007.Last previous edition approved in 2007 as D735207.DOI:10.1520/D7352-07R12.2The Membrane Interface Probe is covered by a patent.Interested parties areinvited to submit information regarding the identification of an alternative(s)to th
15、ispatented item to the ASTM Headquarters.Your comments will receive carefulconsideration at a meeting of the responsible technical committee,which you mayattend.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of AS
16、TMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.2 closed couple flowgas flow in the MIP system whena probe is detached and the gas lines are coupled together.Theflow is then measured with a gas flow meter on the returntubing before entering the gas phase detectors.Used to verifycontinuity of gas flow in the MIP system.3.2.3 gas dryera se
