2007-08 Certified Chemical Test Operators
| DATE ISSUED: | SUPPLEMENT : |
| 05-30-2008 | Eighth Supplement to July 1, 2007 |
| 03-12-2008 | Seventh Supplement to July 1, 2007 |
| 02-22-2008 | Sixth Supplement to July 1, 2007 |
| 02-06-2008 | Fifth Supplement to July 1, 2007 |
| 12-07-2007 | Fourth Supplement to July 1, 2007 |
| 11-07-2007 | Third Supplement to July 1, 2007 |
| 10-04-2007 | Second Supplement to July 1, 2007 |
| 08-24-2007 | First Supplement to July 1, 2007 |
| 07-01-2007 Revised | |
| 07-01-2007 |