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Frequent Questions
Wastes - Frequent Questions
RCRA Test Methods (SW-846)
RCRA Test Methods (SW-846)
3000, 3500, and 3600 Series
In SW-846 Method 3620C Section 11.13.4, is 0.035 the correct elution amount for acetonitrile?
Meeting performance checks in SW-846 Method 3620B when using Florisil cartridges.
Is SW-846 Method 3050B appropriate for the digestion of coal ash?
What is the basis for the reduction from 10% to 1% weight loss value for discarding samples from SW-846 Methods 3015 and 3051 to Methods 3015A and 3051A?
Can SW-846 Method 3005A be used for mercury analysis by Method 6020A, Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)?
Is it acceptable to use SW-846 3535A for all aqueous samples that are destined to be run by 8270D?
See all 10 articles
8000 Series: Chromatographic Separation Methods
Difference in purge times for SW-846 Method 5030B when using Method 8260 vs. Method 8015.
What is meant by the relative retention time (RRT) window of 0.06 units for SW-846 Methods 8260 and 8270?
What column should be used as the confirmation column for SW-846 Method 8310?
Is there an official EPA definition of a volatile compound and a semivolatile compound for SW-846?
Where can I find wipe sampling methods in SW-846?
When using SW-846, are we required to use the internal standards listed in Method 8260 or may we select other internal standards?
See all 29 articles
9000 Series: Miscellaneous Test Methods
Is SW-846 Method 9045D (pH of solids) applicable to organic liquid waste matrices?
Is the use of weighted least squares regression appropriate for solid and hazardous waste measurements of cyanide and phenol instead of linear regression?
Can you provide more definitive guidance regarding the interpretation of “as soon as possible” in SW-846 Methods 9040 and 9045?
Can H3PO4 be used for preservation for SW-846 Method 9060A?
SW-846 Test Methods 9012B and 9010C and compliance with 40 CFR 268.40 footnote 7.
For SW-846 test methods, what is the recommended holding time for nitrate in soil?
See all 9 articles
Detection & Quantitation
Is the use of weighted least squares regression appropriate for solid and hazardous waste measurements of cyanide and phenol instead of linear regression?
Use of 2-tailed vs. 1-tailed t-values in SW-846 Chapter 9 formula for calculating confidence limits.
How should the lower limit of quantitation (LLOQ) for total Xylenes be reported for SW-846 test methods?
What is meant by the Lower Limit Of Quantitation (LLOQ) for SW-846 test methods?
Are Method Detection Limit (MDL) studies required for SW-846 test methods?
General
How can I find out which is the most recent version of an SW-846 method?
Where in SW-846 can I find a method for total organic carbon (TOC) in soil and other solid matrices?
What is the status of Update VI to SW-846?
What is the current process to promulgate SW-846 test methods?
Use of non-required test methods for compliance with the Resource Conservation and Recovery Act (RCRA) regulations in relation to the Methods Innovation Rule (MIR).
How can I find a list of current SW-846 test methods?
See all 32 articles
Hazardous Waste Characteristics
What test methods are approved for determining if a liquid is ignitable? Where can someone find the ASTM standards?
Should a used oil marketer use SW-846 Method 1311 (TCLP) to determine whether used oil meets the specification levels for arsenic, cadmium, chromium and lead?
What waste analysis procedures must a generator follow if they are treating their hazardous waste to comply with the land disposal restrictions (LDR)?
Does a waste derived from a hazardous waste listed solely for exhibiting a characteristic of ignitability, corrosivity, or reactivity remain hazardous when it no longer exhibits a characteristic?
Are alcoholic beverages regulated as hazardous waste when they exhibit the characteristic of ignitability?
Equation for the surface area of the stainless steel coupon in Section 4.5 of SW-846 Method 1110.
See all 45 articles
Holding Time & Preservation
For SW-846 Method 1311, what are the holding times for the samples before leaching, the leachates before extraction, and the extracts before analysis?
What are the preservation requirements for the leachates in Method 1311?
What is the suggested holding time for a sample before performing the SW-846 methods?
What is the current holding time for samples collected in the EnCore sampler and analyzed using SW-846 Method 5035?
Holding time and preservation requirements for volatile organics analysis (VOA).
Can H3PO4 be used for preservation for SW-846 Method 9060A?
See all 20 articles
Inorganic
Should a used oil marketer use SW-846 Method 1311 (TCLP) to determine whether used oil meets the specification levels for arsenic, cadmium, chromium and lead?
What EPA SW-846 test methods are available for use in detecting the presence of mercury?
Can digests from SW-846 Methods 3015A and 3051A be used directly on an automated mercury analyzer without any further sample treatment?
What is the holding time for soil samples analyzed for hexavalent chromium by SW-846 Method 7196A?
Is SW-846 Method 3050B appropriate for the digestion of coal ash?
What is the basis for the reduction from 10% to 1% weight loss value for discarding samples from SW-846 Methods 3015 and 3051 to Methods 3015A and 3051A?
See all 16 articles
Methods Innovations Rule (MIR) & Method Defined Parameters (MDPs)
What is the status of Update VI to SW-846?
What is the current process to promulgate SW-846 test methods?
Use of non-required test methods for compliance with the Resource Conservation and Recovery Act (RCRA) regulations in relation to the Methods Innovation Rule (MIR).
Does the Methods Innovation Rule (MIR) add any new requirements to the Resource Conservation and Recovery Act (RCRA) regulations?
Can you still use SW-846 when it is appropriate to do so in relation to the Methods Innovation Rule (MIR)?
Do the "flexible approach", performance based measurement system (PBMS), and/or Methods Innovation Rule (MIR) change the way prescriptive language is interpreted in SW-846 methods?
See all 10 articles
Performance-Based Measurement System (PBMS) & Flexible Approach
What is the current process to promulgate SW-846 test methods?
How can one determine when a non-required method is appropriate to use for compliance with RCRA in relation to the Methods Innovation Rule?
Do the "flexible approach", performance based measurement system (PBMS), and/or Methods Innovation Rule (MIR) change the way prescriptive language is interpreted in SW-846 methods?
What is the "flexible approach" for environmental measurement?
What is EPA doing to implement a Performance Based Measurement System (PBMS)?
What are the benefits of EPA's Performance Based Measurement System (PBMS)?
See all 8 articles
Quality Assurance (QA) - Quality Control (QC)
What is the purpose of analyzing the matrix spike (MS) sample versus analyzing the laboratory control sample (LCS) and why should we run both?
Why do many of the SW-846 quality control (QC) operations have to be run "once for every 20 samples?"
What is the procedure when matrix interference effects cause elevated TCLP Lower Limit of Quantitation (LLOQ) that are above the TCLP regulatory limits?
For SW-846 Method 5030 combined with Method 8260, is the Tune Batch equal to the Analytical Batch?
What is the SW-846 position concerning the use of accuracy measurements determined from the matrix spike in place of the laboratory control sample?
Can you clarify the quality control (QC) requirements for SW-846 Method 9060A, Total Organic Carbon (TOC)?
See all 11 articles
Sampling
What is the current holding time for samples collected in the EnCore sampler and analyzed using SW-846 Method 5035?
How are representative sampling, confidence levels, and statistical analysis used to determine if a waste is hazardous?
Which sampling method should a generator use to sample a waste for the purpose of hazardous waste identification?
Where can I find wipe sampling methods in SW-846?
Where can I find references regarding drum sampling?
Where can I find information on sampling groundwater?
See all 7 articles
