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| Quality
Assurance/Quality Control Measures |
In regards to quality assurance procedures, the
datasets were checked for both duplicates as well as inaccurate data
in both its raw data file form and the converted file form. The changes
and problems found are detailed under each source category.
In each dataset, there should be a unique record for every specific
combination of certain parameters.
Area Source: FIPSST,
FIPSCNTY, SCC, EMISSTYPE, PLLTCODE
Point Source: FIPSST,
FIPSCNTY, SCC, EMISSTYPE, PLLTCODE, PLANTID, POINTID, SEGMENTID
Nonroad Source: FIPSST,
FIPSCNTY, SCC, EMISSTYPE
Highway Source: FIPSST,
FIPSCNTY, SCC, EMISSTYPE
To verify that no duplicate records existed in
the tables, "find duplicate queries" were generated and
then the duplicate records were removed.
- 1997 Point
Source Maps
Quality Assurance/Quality Control Measures
- There were over 2,000 duplicate
records from the states of West Virginia, New Jersey,
and Pennsylvania that were removed.
- New York failed to submit 1997 summer
and annual data. All New York Data is from 1996.
- There were 48
unknown pollutant ID codes from Delaware that were removed. It is thought that numeric pollutant codes are CAS Numbers for Hazardous Air Pollutants.
- 1997 Area Source
Maps
Quality Assurance/Quality Control Measures
- There were no duplicate records.
- New York failed to submit 1997 summer
and annual data. All New York Data is from 1996.
- Maine and North Carolina only provided
1997 ozone season daily emissions. No annual emissions were
provided. Their annual data is from 1996.
- Maine grouped Architectural Coatings,
Auto Refinishing, and other surface categories into a single
category. (SCC 24-01-999-000)
- Maine and Maryland did not submit dry-cleaning
data because they do not consider those dry-cleaning emissions
to be technically VOC.
- Significant portions of New York were
missing from the 1996 EPA data for both summer and annual
emissions for Gas Marketing - Stage II.
- New Jersey and New York did not submit
open burning data because of their open burning prohibition
laws.
- New Jersey used the incorrect code for
cigarette smoke (SCC 28-10-600-000). For all New Jersey counties,
the SCC code was replaced with SCC 28-10-003-000.
- 1997 Non-Road
Source Maps
Quality Assurance/Quality Control Measures
- There were no duplicate records.
- New York failed to submit 1997 summer
and annual data. All New York Data is from 1996.
- 1996 Highway
Mobile Source Maps
Quality Assurance/Quality Control Measures
- There were six
duplicate records removed.
- New York failed to submit 1997 summer
and annual data. All New York Data is from 1996.
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