1998 Particulate Monitoring Network Description
This page last reviewed August 26, 2003
The 1998 California Particulate Matter Monitoring Network Description described the particulate matter monitoring strategy for California through July 1999 (by which time the 1999 update was completed). The 1998 Network Description was approved by the Regional Administrator of the U.S. EPA Region 9.
The 1998 California Particulate Matter Monitoring Network Description consisted of a statewide summary and 17 appendices. The statewide summary, assembled by the ARB, addresses major elements of the PM2.5 network. Separate appendices describe the proposed network for each Monitoring Planning Area (MPA) (except that the Coachella Valley MPA network description is included with the South Coast MPA network description.
The following map shows the agency responsible for developing the PM2.5 monitoring network plan for each MPA.

The statewide summary and MPA plans are available and can be downloaded from the list below.
| Plan | Text * | Acrobat |
| 1998 California Particulate Matter Monitoring Network Description (Statewide summary) | 131K (WP) | 88K |
| Attachment 1: Existing Particulate Matter Monitoring Network in California (1998 and 1999) | 426K (WP) | 125K |
| Attachment 2: Proposed PM2.5 Monitoring Network in California (1998 and 1999) | 57K (Ex) | 19K |
| Attachment 3: PM2.5 Monitoring Sites to be funded in 1998 in California | 52K (Ex) | 16K |
| Attachment 4: Proposed PM2.5 Sampling Frequency for Monitoring Sites to be Funded in 1998 in California | 44K (Ex) | 16K |
| Attachment 5. Maps of Monitoring Planning Areas and Proposed PM2.5 Sites | Request from: aqdweb@arb.ca.gov |
|
| Bay Area AQMD MPA | 197K (Wd) | 151K |
| Great Basin Unified APCD MPA | 42K (WP) | 33K |
| Imperial County APCD MPA | 64K (WP) | 45K |
| Lake County Air Basin MPA | 57K (WP) | 38K |
| Lake Tahoe Air Basin MPA | 65K (WP) | 46K |
| Mojave Desert Air Basin MPA | 78K (WP) | 52K |
| Monterey Bay Unified APCD MPA | 97K (WP) | 46K |
| Mountain Counties Air Basin MPA | 91K (WP) | 52K |
| North Coast Air Basin MPA | 76K (WP) | 47K |
| Northeast Plateau Air Basin MPA | 63K (WP) | 42K |
| Sacramento Valley Air Basin MPA | 97K (WP) | 60K |
| San Diego County APCD MPA | 3132K (Wd) | 2043K |
| San Joaquin Valley Unified APCD MPA | 91K (Wd) | 72K |
| San Luis Obispo County APCD MPA | 42K (WP) | 43K |
| Santa Barbara County APCD MPA | 63K (WP) | 44K |
| South Coast Air Basin & Coachella Valley MPAs | 1597K | |
| Ventura County APCD MPA | 90K (Wd) | 80K |
| * WordPerfect 6.1 (WP), Word 97 (Wd), or Excel 97 (Ex) | ||
Please send questions or comments to ARB's Air Quality Data Program.


