Relative percent difference epa
[DOC File]This form can be used for reporting analyses of volatile ...
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EPA Methods analyzed in series (e.g., EPA 8015 (modified) may be listed on the same results page. For hydrocarbons which cannot be positively identified as a specific product, indicate the type of hydrocarbons detected (e.g., hydrocarbons in the range of C23-C32). ... RPD: Relative percent difference between MS and MSD. MS/MSD. LIMIT ...
[DOC File]Semiannual Compliance Status Notification Report - US EPA
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If the total duration of excess emissions or process or control system parameter exceedances for the reporting period is less than 1 percent of the total operating time for the reporting period, and CMS downtime for the reporting period is less than 5 percent of the total operating time for the reporting period, only the summary report shall be ...
[DOC File]1 - Maine
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Precision is expressed in terms of Relative Percent Difference (RPD) using the following equation: RPD = [(C1-C2) /(C1+C2)/2)] x 100. where: C1 = The larger of the two concentrations. ... U.S. Environmental Protection Agency (USEPA), Region 1, 1996. “Region 1, USEPA – SOP No. GW 0001, Low Flow Purging and Sampling Procedure for Collection ...
[DOC File]Quality Assurance Project Plan
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Relative Percent Difference Equation: Absolute value (Sample 1(S1) – Sample 2(S2)) / ((S1 + S2)/2) * 100 = RPD. A 5% collection of a field duplicate are required for chemical parameters, which is a minimum of 1 duplicate per 20 samples or 1 sample per sampling event if less than 20 samples.
[DOC File]Homepage - TCEQ .gov
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for organic analytes, percent recoveries between 60% and 140%, but not less than 10%, and relative percent differences within 40% are acceptable, and. for inorganic analytes, percent recoveries between 70% and 130%, but not less than 30%, and relative percent differences within 30% are acceptable.
[DOC File]PM2 - US EPA
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Percent difference of audit levels 3-10 < +15% . Audit levels 1&2 + 1.5 ppb difference or +15% 3 consecutive audit concentration not including zero. 40 CFR …
[DOC File]1 - US EPA
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Ten percent of the samples in each study/project should be examined by a qualified co-worker. The grids chosen and tray used for sorting and any organisms missed by the picker should be examined. If more than 10% of the subsample (ie. for a subsample count of 300, 30 organisms) is found in remaining grids that have been “picked” training ...
[DOC File]PART 75 CEMS FIELD AUDIT MANUAL: - US EPA
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Relative Accuracy Equations A-28. Appendix D Inspection Sheet A-29. ... Download from the EPA mainframe (if you have access rights) or you can request a copy of the feedback from your CAMD contact. ... Difference between the calibration gas value and response should be within 2% of the span for the linearity test. Otherwise the test is repeated ...
[DOC File]United States Environmental Protection Agency | US EPA
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Criteria/Action Required: The relative percent difference (RPD) between field duplicate sample results must be 30% for results >5 x DL. If the both results are >5 x DL and the criteria are exceeded, the positive detects for the two samples will be qualified as estimated (flagged “J”).
[DOC File]NC DENR/DWQ LABORATORY CERTIFICATION
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Jan 31, 2020 · ANSWER: The relative percent difference for duplicates shall meet the acceptance criteria in Table . 1. HEM recovery: 78-114%. HEM RPD: 18%. SGT-HEM recovery: 64-132%. SGT-HEM RPD: 34% 75 If an MSD is performed (optional), what is the acceptance criteria?? [EPA Method 1664, Rev. B, Section 9.3.6]
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