QA - Annual Performance Evaluation

40 CFR Part 58 Appendix A section 3.2.2 requires the PQAO, each calendar quarter (during which monitors are operated), evaluate at least 25 percent of the SLAMS monitors for SO2, NO2, O3, or CO such that each monitor is evaluated at least once per year. The evaluation is made by challenging the monitor with audit gas standards of known concentration from at least three of ten audit levels. The audit levels selected should represent or bracket 80 percent of ambient concentrations measured by the monitor being evaluated.

Each audit level has a minimum and maximum concentration range, with the lowest range defined as audit level 1. For the criteria gases, 10 audit level ranges are currently defined.

AQS evaluates each reported assessment concentration on the transaction with its reported level number. If the concentration is not within the level’s concentration range, then AQS will produce a warning message when processing the transaction. The concentration values and reported level number will be stored in the database and a warning will be issued on the error report produced by the batch load process.

The maximum and minimum allowable reported values defined for the parameter would also apply, and produce rejections if exceeded.

Examples:

QA - Annual PE transaction in default mode
QA|I|Annual PE|0145|06|067|0010|44201|1|20200708|1|087|007|||0.0133|0.0138|0.0276|0.0286|0.0518|0.0532|0.0752|0.0778|||0.1215|0.1271||||||
QA - Annual PE transaction in Tribal mode
QA|I|Annual PE|1296|TT|905|9009|42101|1|20200923|1|593|007|||0.074|0.077|0.235|0.24||||||||||||||

Format

QA - Annual PE transaction format

Seq.

Name

Description

Formatting Rules

Required

Key

1

Transaction Type

Quality Assurance transaction identifier.

Must = QA

Always

2

Action Indicator

Indicator for Insert, Update, or Delete action.

Must = I, U, or D

Always

3

Assessment Type

Indicates the specific QA assessment associated with the transaction.

Must = Annual PE

Always

Y

4

Performing Agency

Agency Code of organization performing assessment.

Must exist in AGENCIES reference table.

Optional; defaults to user agency

5

State Code / Tribal Indicator

The FIPS state code of the monitor, or “TT” to indicate that the next field on the transaction is a Tribal code.

Must exist in STATES Reference Table or be ‘TT’ for Tribal Site

Always

Y

6

County Code / Tribal Code

The FIPS County Code of the site. If the previous field on the transaction contains “TT”, then the Tribal Code of the site.

Must exist in COUNTIES (for state) or TRIBAL_AREAS Reference table

Always

Y

7

Site Number

Four digit number to uniquely identify site in county and/or tribe.

Must exist in SITES table with {State Code, county Code} or Tribal Code

Always

Y

8

Parameter Code

The AQS parameter code assigned to the monitor in AQS.

Must exist in PARAMETERS reference table.

Always

Y

9

POC

Parameter Occurrence Code: One or two digit number identifying a specific monitor for a parameter at the site.

Must exist in MONITOR table for non-Insert actions.

Always

Y

10

Assessment Date

Date that the assessment was performed

YYYYMMDD.

Always

Y

11

Assessment Number

A unique number associated with an assessment performed at a site on a given day. Value should be “1” unless additional same assessments are performed.

Integer.

Always

Y

12

Monitor Method Code

The sampling methodology of the monitor being assessed.

Must exist in SAMPLING METHODOLOGIES reference table.

Insert

13

Reported Unit

Units associated with the assessment concentrations (Monitor Concentration and Check Standard Concentration).

Must exist in UNITS reference table, and unit code must be for Concentration units type.

Unless Delete

14

Level 1 Monitor Concentration

The concentration value provided by the monitor being assessed at level 1.

Decimal.

Insert

15

Level 1 Assessment Concentration

The value of the known gas standard concentration in Audit Level 1.

Decimal.

Insert

16

Level 2 Monitor Concentration

The concentration value provided by the monitor being assessed at level 2.

Decimal.

Insert

17

Level 2 Assessment Concentration

The value of the known gas standard concentration in Audit Level 2.

Decimal.

Insert

18

Level 3 Monitor Concentration

The concentration value provided by the monitor being assessed at level 3.

Decimal.

Insert

19

Level 3 Assessment Concentration

The value of the known gas standard concentration in Audit Level 3.

Decimal.

Insert

20

Level 4 Monitor Concentration

The concentration value provided by the monitor being assessed at level 4.

Decimal.

Insert

21

Level 4 Assessment Concentration

The value of the known gas standard concentration in Audit Level 4.

Decimal.

Insert

22

Level 5 Monitor Concentration

The concentration value provided by the monitor being assessed at level 5.

Decimal.

Insert

23

Level 5 Assessment Concentration

The value of the known gas standard concentration in Audit Level 5.

Decimal.

Insert

24

Level 6 Monitor Concentration

The concentration value provided by the monitor being assessed at level 6.

Decimal.

Insert

25

Level 6 Assessment Concentration

The value of the known gas standard concentration in Audit Level 6.

Decimal.

Insert

26

Level 7 Monitor Concentration

The concentration value provided by the monitor being assessed at level 7.

Decimal.

Insert

27

Level 7 Assessment Concentration

The value of the known gas standard concentration in Audit Level 7.

Decimal.

Insert

28

Level 8 Monitor Concentration

The concentration value provided by the monitor being assessed at level 8.

Decimal.

Insert

29

Level 8 Assessment Concentration

The value of the known gas standard concentration in Audit Level 8.

Decimal.

Insert

30

Level 9 Monitor Concentration

The concentration value provided by the monitor being assessed at level 9.

Decimal.

Insert

31

Level 9 Assessment Concentration

The value of the known gas standard concentration in Audit Level 9.

Decimal.

Insert

32

Level 10 Monitor Concentration

The concentration value provided by the monitor being assessed at level 10.

Decimal.

Insert

33

Level 10 Assessment Concentration

The value of the known gas standard concentration in Audit Level 10.

Decimal.

Insert