ASTM C1893-24
(Practice)Standard Practice for Laboratory Performance Verification of Hydrodynamic Separators for the Treatment of Stormwater Runoff
Standard Practice for Laboratory Performance Verification of Hydrodynamic Separators for the Treatment of Stormwater Runoff
SIGNIFICANCE AND USE
4.1 This practice provides criteria for the verification of the silica sediment removal efficiency of hydrodynamic separators.
4.2 Verification can be used to support certification of the technology within different AHJs provided that:
4.2.1 HDS units are sized using the resulting performance data to treat the prescribed water quality flow rate or annual mass load requirement at the level of performance desired by the certifying entity.
4.2.2 Scaling of results to different MTD model sizes is in accordance with this standard.
4.2.3 The technology is designed consistently with the tested unit such that it operates within the specified limits determined by the verification as well as other restrictions placed by the certification entity.
SCOPE
1.1 This practice covers the criteria for the laboratory verification of Hydrodynamic Separators (HDS) as it relates to the removal of suspended solids in stormwater runoff.
1.2 HDS manufactured treatment devices are placed as offline or online treatment devices along storm drain pipe lines to remove suspended solids and associated pollutants from stormwater runoff. These devices may be used to target removal of other pollutants which are not covered in this standard. The criteria in this standard specifically relate to the removal of silica particles in controlled laboratory conditions, which is considered an appropriate surrogate for predicting the removal of stormwater solids from actual stormwater runoff.
1.3 This practice provides guidelines for independent regulatory entities, collectively referred to as Authority Having Jurisdictions (AHJs), to streamline data requirements for the certification of HDS devices within their jurisdiction. For any given AHJ, additional criteria may also apply.
1.4 Units—The values stated in inch-pound units are to be regarded as standard, except for methods to establish and report sediment concentration and particle size. It is convention to exclusively describe sediment concentration in mg/L and particle size in mm or μm, both of which are SI units. The SI units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard. Reporting of test results in units other than inch-pound units shall not be regarded as non-conformance with this test method.
1.5 Acceptance of test results attained according to this specification may be subject to specific requirements set by a Quality Assurance Project Plan (QAPP), a specific verification protocol, or AHJ. It is advised to review one or all of the above to ensure compliance.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This practice is also intended to ensure that the data resulting from completion of testing in accordance with the ASTM test methods referenced herein can be utilized to satisfy the requirements of the New Jersey Department of Environmental Protection’s manufactured treatment device (MTD) certification process.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1893 − 24
Standard Practice for
Laboratory Performance Verification of Hydrodynamic
1
Separators for the Treatment of Stormwater Runoff
This standard is issued under the fixed designation C1893; 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 responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.1 This practice covers the criteria for the laboratory
mine the applicability of regulatory limitations prior to use.
verification of Hydrodynamic Separators (HDS) as it relates to
the removal of suspended solids in stormwater runoff.
NOTE 1—This practice is also intended to ensure that the data resulting
from completion of testing in accordance with the ASTM test methods
1.2 HDS manufactured treatment devices are placed as
referenced herein can be utilized to satisfy the requirements of the New
offline or online treatment devices along storm drain pipe lines
Jersey Department of Environmental Protection’s manufactured treatment
to remove suspended solids and associated pollutants from device (MTD) certification process.
stormwater runoff. These devices may be used to target
1.7 This international standard was developed in accor-
removal of other pollutants which are not covered in this
dance with internationally recognized principles on standard-
standard. The criteria in this standard specifically relate to the
ization established in the Decision on Principles for the
removal of silica particles in controlled laboratory conditions,
Development of International Standards, Guides and Recom-
which is considered an appropriate surrogate for predicting the
mendations issued by the World Trade Organization Technical
removal of stormwater solids from actual stormwater runoff.
Barriers to Trade (TBT) Committee.
1.3 This practice provides guidelines for independent regu-
2. Referenced Documents
latory entities, collectively referred to as Authority Having
2
Jurisdictions (AHJs), to streamline data requirements for the 2.1 ASTM Standards:
C1745/C1745M Test Method for Measurement of Hydraulic
certification of HDS devices within their jurisdiction. For any
given AHJ, additional criteria may also apply. Characteristics of Hydrodynamic Stormwater Separators
and Underground Settling Devices
1.4 Units—The values stated in inch-pound units are to be
C1746/C1746M Test Method for Measurement of Sus-
regarded as standard, except for methods to establish and
pended Sediment Removal Efficiency of Hydrodynamic
report sediment concentration and particle size. It is convention
Stormwater Separators and Underground Settling Devices
to exclusively describe sediment concentration in mg/L and
D3977 Test Methods for Determining Sediment Concentra-
particle size in mm or μm, both of which are SI units. The SI
tion in Water Samples
units given in parentheses are mathematical conversions,
D4959 Test Method for Determination of Water Content of
which are provided for information purposes only and are not
Soil By Direct Heating
considered standard. Reporting of test results in units other
D6913/D6913M Test Methods for Particle-Size Distribution
than inch-pound units shall not be regarded as non-
(Gradation) of Soils Using Sieve Analysis
conformance with this test method.
D7928 Test Method for Particle-Size Distribution (Grada-
1.5 Acceptance of test results attained according to this
tion) of Fine-Grained Soils Using the Sedimentation
specification may be subject to specific requirements set by a
(Hydrometer) Analysis
Quality Assurance Project Plan (QAPP), a specific verification
E29 Practice for Using Significant Digits in Test Data to
protocol, or AHJ. It is advised to review one or all of the above
Determine Conformance with Specifications
to ensure compliance.
E3317 Specification for Silica-Based Sediments for the
1.6 This standard does not purport to address all of the Evaluation of Stormwater Treatment Devices
safety concerns, if any, associated with its use. It is the E3318 Terminology for Standards Relating to Stormwater
Control Measures
1
This practice is under the jurisdiction of ASTM Committee E64 on Stormwater
Control Measures and is the direct responsibility of Subcommittee E64.01 on Lab
2
Evaluation. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2024. Published March 2024. Originally contact ASTM Customer Service at service@astm.
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1893 − 23 C1893 − 24
Standard Practice for
Laboratory Performance Verification of Hydrodynamic
1
Separators for the Treatment of Stormwater Runoff
This standard is issued under the fixed designation C1893; 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
1.1 This practice covers the criteria for the laboratory verification of Hydrodynamic Separators (HDS) as it relates to the removal
of suspended solids in stormwater runoff.
1.2 HDS manufactured treatment devices are placed as offline or online treatment devices along storm drain pipe lines to remove
suspended solids and associated pollutants from stormwater runoff. These devices may be used to target removal of other pollutants
which are not covered in this standard. The criteria in this standard specifically relate to the removal of silica particles in controlled
laboratory conditions, which is considered an appropriate surrogate for predicting the removal of stormwater solids from actual
stormwater runoff.
1.3 This practice provides guidelines for independent regulatory entities, collectively referred to as Authority Having Jurisdictions
(AHJs), to streamline data requirements for the certification of HDS devices within their jurisdiction. For any given AHJ, additional
criteria may also apply.
1.4 Units—The values stated in inch-pound units are to be regarded as standard, except for methods to establish and report
sediment concentration and particle size. It is convention to exclusively describe sediment concentration in mg/L and particle size
in mm or μm, both of which are SI units. The SI units given in parentheses are mathematical conversions, which are provided for
information purposes only and are not considered standard. Reporting of test results in units other than inch-pound units shall not
be regarded as non-conformance with this test method.
1.5 Acceptance of test results attained according to this specification may be subject to specific requirements set by a Quality
Assurance Project Plan (QAPP), a specific verification protocol, or AHJ. It is advised to review one or all of the above to ensure
compliance.
1.6 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
NOTE 1—This practice is also intended to ensure that the data resulting from completion of testing in accordance with the ASTM test methods referenced
herein can be utilized to satisfy the requirements of the New Jersey Department of Environmental Protection’s manufactured treatment device (MTD)
certification process.
1
This practice is under the jurisdiction of ASTM Committee E64 on Stormwater Control Measures and is the direct responsibility of Subcommittee E64.01 on Lab
Evaluation.
Current edition approved April 15, 2023March 1, 2024. Published May 2023March 2024. Originally approved in 2023. Last previous edition approved in 2023 as
C1893 - 23. DOI: 10.1520/C1893-23.10.1520/C1893-24.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C1893 − 24
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
C1745/C1745M Test Method for Measurement of Hydraulic Characteristics of Hydrodynamic Stormwater Separators and
Underground Settling Devices
C1746/C1746M Test Method for Measurement of Suspended Sediment Removal Efficiency of Hydrodynamic Stormwater
Separators and Underground Settling Devices
D3977 Test Methods for Determining Sediment Concentration in Water Samples
D4959 Test Method for Determination of Water Content of Soil By Direct Heating
D6913/D6913M Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis
D7928 Test Method for Particle-Size Distribution (Gradation) of Fine-Grained Soil
...
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