Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter.
Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.
OCR for page 204
APPENDIX B
NATIONAL AMBIENT AIR QUALITY STANDARDS
TABLE B-1
Current National Ambient Air Qualitv Standards
Pollutant Concentration
Sulfur dioxide 80 ng/m3 (0.03 ppm)
(SO2) 365 1lg/m3 (0.14 ppm)
Total suspended 75 ug/m3
particulates 260 ug/m3
(TSP)
,a
Comments
Annual arithmetic mean
Maximum 24-hour concentration
not to be exceeded more than
once per year
Annual geometric mean
Maximum 24-hour
concentration not to be
exceeded more than once per
year
Carbon monoxide 10 mg/m3 (9 ppm) Maximum 8-hour
(CO) concentration not to be
exceeded more than once per
year
40 mg/m3 (35 ppm) Maximum 1-hour concentration
not to be exceeded more than
once per year
Ozone 235 1lg/m3 (0.12 ppm) Not more than one day
(O3) per calendar year with
maximum hourly average
concentrations above 235
ug/m3
Nitrogen dioxide 100 ug/m3 (0.05 ppm) Annual arithmetic
(NO2) mean (generally monitored
continuously)
Lead 1.5 ug/m3 Maximum arithmetic mean
averaged over a calendar
quarter (frequently
monitored weekly)
aReprinted from Code of Federal Regulations, Title 40, Part 50, 1984.
204
Representative terms from entire chapter:
ambient air
