ASTM C1893-24 PDF
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
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 6
- Дата публикации:
- 1 марта 2024 г.
- Издание:
- C1893
- ICS:
- 13.060.10
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.
Abstract
Overview
ASTM C1893-24 is the Standard Practice for Laboratory Performance Verification of Hydrodynamic Separators for the Treatment of Stormwater Runoff. Developed by ASTM International, this standard provides comprehensive criteria for the laboratory testing, verification, and performance evaluation of hydrodynamic separators (HDS) specifically regarding the removal of suspended solids from stormwater runoff. The document is essential for certifying the effectiveness of HDS devices as stormwater control measures and streamlining regulatory acceptance by various authorities having jurisdiction (AHJs).
Key Topics
- Laboratory Verification for Sediment Removal: Focuses on verifying HDS performance in removing suspended solids, particularly silica particles, under controlled laboratory conditions. Silica is used as a surrogate for broader stormwater solids, ensuring results are relevant for field applications.
- Certification and Regulatory Support: Provides data requirements and reporting protocols for HDS devices to support certification by regulatory entities (AHJs). Ensures uniformity when submitting devices for recognition across multiple jurisdictions.
- Performance Testing Criteria:
- Full-scale, commercially available HDS units must be tested.
- Assessments include system hydraulics, sediment removal efficiency, and scour susceptibility over a range of flows.
- Verification requires the presence of an independent, qualified third-party observer and the use of accredited laboratories for all analytical testing.
- Scaling guidance for application to different HDS unit sizes, ensuring results are transferable when devices are geometrically proportional.
- Reporting and Documentation: Specifies detailed reporting requirements, including significant digits, verification of data by independent parties, and mandatory performance claims.
- Units of Measure: Clear conventions for reporting area, flow rate, sediment concentration, velocity, and volume with both inch-pound and SI units allowed.
Applications
ASTM C1893-24 serves several critical applications in stormwater management:
- Stormwater Treatment Design: Enables engineers, manufacturers, and designers to validate that HDS units effectively remove suspended sediments before installation along storm drain pipelines, both as offline and online solutions.
- Regulatory Compliance: Provides a recognized laboratory protocol supporting device certification processes, such as those used by the New Jersey Department of Environmental Protection (NJDEP), and can be referenced by municipalities or state agencies adopting or adapting similar regulatory frameworks.
- Technology Certification: Streamlines data submission for manufacturers seeking certification or approval within various jurisdictions, supporting consistent assessment of manufactured treatment devices (MTDs).
- Product Development and Quality Assurance: Assures stakeholders that HDS devices have undergone rigorous, standardized testing overseen by independent, qualified personnel following precise protocols for sampling, analysis, and reporting.
Related Standards
Several ASTM standards and external protocols are referenced to ensure robust laboratory testing and consistent evaluations:
- ASTM C1745/C1745M - Measurement of Hydraulic Characteristics of Hydrodynamic Stormwater Separators
- ASTM C1746/C1746M - Measurement of Suspended Sediment Removal Efficiency
- ASTM D3977 - Determining Sediment Concentration in Water Samples
- ASTM D4959 - Determination of Water Content of Soil by Direct Heating
- ASTM D6913/D6913M / D7928 - Particle-Size Distribution of Soils
- ASTM E29 - Use of Significant Digits in Test Data
- ASTM E3317 - Specification for Silica-Based Sediments in Evaluation of Stormwater Treatment Devices
- ASTM E3373 - Test Method for Scour in Hydrodynamic Separators
- ASTM E3318 - Terminology for Stormwater Control Measures
- NJDEP Laboratory Protocols and Verification Procedures (for state-specific certification processes)
Practical Value
Implementing ASTM C1893-24 provides assurance of hydrodynamic separator performance, streamlines certification, and supports best practices in environmental engineering for stormwater quality improvement. Adhering to this standard allows for regulatory acceptance, improved product reliability, and scientifically sound data supporting the deployment of effective stormwater control measures.
Технические детали
- Технический комитет
- E64 - Stormwater Control Measures
- SKU
- ASTM C1893-24
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