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Recently Promulgated Regulations - Parts 50, 53, 58

Files identified as "ZIP" files must be de-archived using 'PKUNZIP.' Downloading instructions, archivers, and de-archivers are available through "File Compression Utilities".

From the listing below, find the file you would like to download. The available file formats are represented by icons on the right side of the listing. Click on the icon that represents the file format you wish to receive. For an explanation of file formats and their icons, see our TTNWeb File Types.


Description Date Bytes Type
Federal Register copy of EPA's 01/12/99 "Ambient Air Quality Surveillance for Lead-Final Rule" 01-20-99 76013 pdf icon
Copy of EPA's 01/12/99 "Ambient Air Quality Surveillance for Lead-Final Rule" 01-14-99 63617 pdf icon
Final Ozone NAAQS 07-18-97 242616 pdf icon
Final Particulate Matter NAAQS 07-18-97 1373408 pdf icon
Particulate Matter Monitoring Requirements 07-18-97 782724 pdf icon
10/6/95 Promulgated 40 CFR Part 58 Revisions - for Open Path Ambient Air Monitoring (Zipped Wordperfect 5.1 file) 07-08-96 28073 Zip file icon


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