ASTM D7204 - 07

    Standard Practice for Sampling Waste Streams on Conveyors

    Active Standard ASTM D7204 | Developed by Subcommittee: D34.01.02

    Book of Standards Volume: 11.04


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    Significance and Use

    This practice can be used in sampling ash from a kiln or incinerator, soils, and process waste from conveying systems, such as, a conveyer and vertical lifts. Some slurries, such as the bottom solids, can be sampled from the quench waters at the end of a kiln.

    This practice can be used to determine material balances for burner efficiency studies and compliance studies.

    This practice can be used on lifts, sloping, and horizontal conveyor systems. The type of conveyor and the amount and type of sample required will dictate the type of sampling equipment required to get a representative sample.

    The sample is taken directly from the conveyor before emptying into the waste container or pile for disposal or recycling using a scoop, dipper, or shovel depending upon the sample requirements (see Practice D 5633). The sample is then put into the sample container for analysis.

    The place, quantity, frequency, and time of sampling is dependent upon the conveying system equipment, DQOs (Practice D 5792), work or sampling plan (See Practice D 5283 and Guide D 4687), and analysis to be run.

    4.5.1 Large particles can be mechanically excluded on a belt system. Large particles may accumulate at the bottom of an inclined/sloped belt system. Therefore, steps, if possible, need to be taken so that particles of all sizes have equal chances of being sampled.

    4.5.2 The number of samples and sample time is dependent upon the system, the precision required, the decisions that are to be made, the cost, and the degree of heterogeneity of the material (see Guide D 5956, Practice D 6250, and Guide D 6311).

    4.5.3 In general, the ideal sampling location is nearest to the point of generation since temperature, oxidation, and air movement may change some samples with time.

    The practice does not address issues related to the heterogeneity of the sample.

    1. Scope

    1.1 This practice describes standard procedures for sampling waste on open and closed conveying systems and is applicable to any waste material that can be conveyed to a waste pile or container. The conveyor system can be a vertical (vertical lifts), sloped or horizontal type.

    1.2 This practice is intended for particles and slurries, which can be sampled using scoop, dipper or shovel type samplers.

    1.3 The practice is not intended for large size sample constituents, such as boulders, large rocks, and debris.

    1.4 This standard does not purport to address all of the safety concerns, 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D4547 Guide for Sampling Waste and Soils for Volatile Organic Compounds

    D4687 Guide for General Planning of Waste Sampling

    D4916 Practice for Mechanical Auger Sampling

    D5088 Practice for Decontamination of Field Equipment Used at Waste Sites

    D5283 Practice for Generation of Environmental Data Related to Waste Management Activities: Quality Assurance and Quality Control Planning and Implementation

    D5633 Practice for Sampling with a Scoop

    D5658 Practice for Sampling Unconsolidated Waste From Trucks

    D5680 Practice for Sampling Unconsolidated Solids in Drums or Similar Containers

    D5681 Terminology for Waste and Waste Management

    D5792 Practice for Generation of Environmental Data Related to Waste Management Activities: Development of Data Quality Objectives

    D5956 Guide for Sampling Strategies for Heterogeneous Wastes

    D6009 Guide for Sampling Waste Piles

    D6051 Guide for Composite Sampling and Field Subsampling for Environmental Waste Management Activities

    D6232 Guide for Selection of Sampling Equipment for Waste and Contaminated Media Data Collection Activities

    D6250 Practice for Derivation of Decision Point and Confidence Limit for Statistical Testing of Mean Concentration in Waste Management Decisions

    D6311 Guide for Generation of Environmental Data Related to Waste Management Activities: Selection and Optimization of Sampling Design


    ICS Code

    ICS Number Code 13.030.40 (Installations and equipment for waste disposal and treatment)

    UNSPSC Code

    UNSPSC Code 24101700(Conveyors and accessories); 77100000(Environmental management)


    DOI: 10.1520/D7204-07

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