QA Hand

SO2 Validation Template 

1) Requirement (SO2) 2) Frequency 3) Acceptance Criteria Inform

CRITICAL CRITERIA- SO2

One Point QC CheckSingle analyzer 1/ 2 weeks < +10% (percent difference) 

1 and 2) 40 CFR Part 58 3) Recommendation baseApp A Sec 2.3.1.2 QC Check Conc range 0.Relative to routine conce

Zero/span check 1/ 2 weeks Zero drift < + 1.5 ppb Span drift < + 10 % 1 and 2) QA Handbook V

3) Recommendation and 

OPERATIONAL CRITERIA- SO2

Shelter Temperature Range Daily (hourly values) 

20 to 30o C. (Hourly avg) 

or 

per manufacturers specifications if designated 

to a wider temperature range 

1, 2 and 3) QA HandbooGenerally the 20-30 o C rrestrictive operable range shelter may also be used found on AMTIC provideinstrument.FRM/FEM m30 o C range per 40 CFR 

Shelter Temperature Control Daily (hourly values) < + 2o C SD over 24 hours 1, 2 and 3) QA Handbook Shelter Temperature Device Check 1/6 mo + 2o C of standard 1, 2 and 3) QA Handbook 

Annual Performance 

Evaluation Single Analyzer

Every site 1/year 25 % of sites quarterly Percent difference of audit levels 3-10 < +15% 

Audit levels 1&2 + 1.5 ppb difference or +15%

1 and 2) 40 CFR Part 58 3) Recommendation - 3 aincluding zero. AMTIC http://www.epa.gov/ttn/a

Federal Audits (NPAP) 1/year at selected sites 20% of sites audited Audit levels 1&2 + 1.5 ppb difference all other levels percent difference + 15% 1) 40 CFR Part 58 App A 

2) NPAP adequacy requ3) NPAP QAPP/SOP 

Verification/Calibration

Upon receipt/adjustment/repair/ 

installation/moving 

1/6 months if manual zero/span 

performed biweekly 

1/year if continuous zero/span 

performed daily 

All points within + 2 % of calibration range of 

best-fit straight line 

1) 40 CFR Part 50 App A2 and 3) RecommendatioMulti-point calibration (0 

Gaseous Standards All gas cylinders NIST Traceable (e.g., EPA Protocol Gas) 

1) 40 CFR Part 50 App A2) NA Green book3) 40 CFR Part 50 App F Producers must participatVerification Program 40 

Zero Air/ Zero Air Check 1/year Concentrations below LDL < 0.1 ppm aromatic hydrocarbons 1) 40 CFR Part 50 App A

2) Recommendation 
QA Hand

1) Requirement (SO2) 2) Frequency 3) Acceptance Criteria Inform

3) Recommendation and Section 4.1.6.2 

Gas Dilution Systems 1/year or after failure of 1 point QC check or performance evaluation Accuracy + 2 % 1) 40 CFR Part 50 App A

2) Recommendation 3) 40 CFR Part 50 App A

Detection (FEM/FRMs)  Noise NA 0.001 ppm (standard range) 0.0005 ppm (lower range) 1) 40 CFR Part 53.23 (b) 

2) NA 3) ) 40 CFR Part 53.20 T

 Lower detectable level 1/year 0.002 ppm (standard range) 0.001 ppm (lower range) 1) 40 CFR Part 53.23 (c) 

2) Recommendation 3) 40 CFR Part 53.20 Tab

SYSTEMATIC CRITERIA- SO2

Sampler/Monitor NA Meets requirements listed in FRM/FEM designation 1) 40 CFR Part 58 App C 

3) 40 CFR Part 53 & FRM

Standard Reporting Units All data ppb (final units in AQS) 1, 2 and 3) 40 CFR Part Rounding convention for data reported to AQS All data 1 place after decimal with digits to right truncated 1, 2 and 3) 40 CFR Part Completeness 1 hour standard 

Hour – 75% of hour 

Day- 75% hourly Conc 

Quarter- 75% complete days 

Years- 4 complete quarters 

5-min value reported only for valid hours 

1, 2 and 3) 40 CFR Part 5More details in CFR on a5-min values or 5-min mavalid portion of the hour incomplete no 5-min or 5

Sample Residence Time Verification 1/year < 20 seconds

1) 40 CFR Part 58 App E2) Recommendation 3) 40 CFR Part 58 App E

Sample Probe, Inlet, Sampling train All sites Borosilicate glass (e.g., Pyrex®) or Teflon®

1, 2 and 3) 40 CFR Part 5FEP and PFA have been to Teflon. Replacement o1/year and more frequencontamination dictate 

Siting 1/year Meets siting criteria or waiver documented 

1) 40 CFR Part 58 App E2) Recommendation 3) 40 CFR Part 58 App E

Precision(using 1-point QC checks) 

Calculated annually and as appropriate 

for design value estimates 90% CL CV < 10%

1) 40 CFR Part 58 App A 2) 40 CFR Part 58 App A 3) 40 CFR Part 58 App A 

Bias (using 1-point QC checks) Calculated annually and as appropriate for design value estimates 95% CL < + 10% 1) 40 CFR Part 58 App A 

2) 40 CFR Part 58 App A 3) 40 CFR Part 58 App A 

Annual PE Primary QA Organization (PQAO) Evaluation 

1/year

95% of audit percent differences fall within the 

one point QC check 95% probability intervals 

at PQAO level of aggregation

1) 40 CFR Part 58 App A 2) Recommendation 3) 40 CFR Part 58 App A