| Change History |
| 4/27/2006 | | C1 Module pump replaced |
| 9/22/2005 | | A1 B1 C1 D1 Modules Flow Calibration |
| 9/22/2005 | | Routine annual maintenance |
| 7/14/2005 | | B1 Module pump replaced |
| 7/12/2005 | | Forest fires both local and regional |
| 6/21/2005 | | Prescribed fire in the area |
| 4/5/2005 | | B1 Module pump replaced |
| 2/8/2005 | | B1 Module pump replaced |
| 7/24/2004 | | A1 Module Flow Calibration |
| 7/24/2004 | | B1 Module Flow Calibration |
| 7/24/2004 | | C1 Module Flow Calibration |
| 7/24/2004 | | D1 Module Flow Calibration |
| 7/24/2004 | | Photos Taken |
| 7/24/2004 | | Routine annual maintenance |
| 7/8/2004 | | A1 Module Electronic Box replaced |
| 5/7/2004 | | A1 Module Electronic Box replaced |
| 5/4/2004 | | B1 Module electronic box replaced |
| 4/2/2004 | | A1 Module pump Replaced |
| 2/14/2004 | | Ice on Module D1 filter cartridge, used heat gun to free up |
| 2/11/2004 | | Ice on Module D1 filter cartridge, used heat gun to free up |
| 12/19/2003 | | Sampler controller replaced |
| 8/29/2003 | | A1 Module Flow Calibration |
| 8/29/2003 | | B1 Module Flow Calibration |
| 8/29/2003 | | C1 Module Flow Calibration |
| 8/29/2003 | | C1 Module pumps replaced |
| 8/29/2003 | | D1 Module Flow Calibration |
| 8/29/2003 | | D1 Module pumps replaced |
| 8/29/2003 | | Photos Taken |
| 8/29/2003 | | Routine annual maintenance |
| 9/11/2002 | | A1 Module Flow Calibration |
| 9/11/2002 | | A1 Module pump replaced |
| 9/11/2002 | | B1 Module Flow Calibration |
| 9/11/2002 | | B1 Module pumps replaced |
| 9/11/2002 | | C1 Module Flow Calibration |
| 9/11/2002 | | D1 Module Flow Calibration |
| 9/11/2002 | | Photos Taken |
| 9/11/2002 | | Routine annual maintenance |
| 8/1/2002 | | D1 Module pump Replaced |
| 5/17/2002 | | D1 Module pump Replaced |
| 4/11/2002 | | Fires and construction 25 miles from the shelter |
| 3/5/2002 | | B1 Module electronic box and cyclone replaced |
| 10/4/2001 | | Fires 7 miles SW of site |
| 9/30/2001 | | A1 Module Flow Calibration |
| 9/30/2001 | | B1 Module Flow Calibration |
| 9/30/2001 | | C1 Module Flow Calibration |
| 9/30/2001 | | D1 Module Flow Calibration |
| 9/30/2001 | | Photos Taken |
| 9/30/2001 | | Routine annual maintenance |
| 5/14/2001 | | Sampler controller replaced |
| 10/26/2000 | | B1 Module electronics box replaced |
| 9/20/2000 | | A1 Module Flow Calibration |
| 9/20/2000 | | B1 Module Flow Calibration |
| 9/20/2000 | | C1 Module Flow Calibration |
| 9/20/2000 | | D1 Module Flow Calibration |
| 7/15/2000 | | Painting around the sampler occurred |
| 5/23/2000 | | C1 Module Flow Calibration |
| 5/23/2000 | | D1 Module Flow Calibration |
| 5/23/2000 | | Version 2 sampler installed |
| 5/23/2000 | | A1 Module Flow Calibration |
| 5/23/2000 | | B1 Module Flow Calibration |
| 5/23/2000 | | Version 2 IMPROVE sampler installed |
| 1/1/2000 | | Many visitors in park |
| 9/1/1999 | | D1 Module Flow Calibration |
| 6/23/1999 | | Some painting done around shed |
| 10/29/1998 | | ACAD1 built new shelter on original site |
| 10/16/1998 | | B1 Module Flow Calibration |
| 10/16/1998 | | C1 Module Flow Calibration |
| 10/16/1998 | | D1 Module Flow Calibration |
| 10/16/1998 | | Routine annual maintenance |
| 10/16/1998 | | A1 Module Flow Calibration |
| 5/13/1998 | | Shelter painted |
| 4/22/1998 | | Road work within 25 feet of shelter |
| 10/7/1997 | | A1 Module Flow Calibration |
| 10/7/1997 | | B1 Module Flow Calibration |
| 10/7/1997 | | C1 Module Flow Calibration |
| 10/7/1997 | | D1 Module Flow Calibration |
| 10/7/1997 | | Routine annual maintenance |
| 6/10/1997 | | Smoke from fires in area |
| 8/26/1996 | | B1 Module Flow Calibration |
| 8/26/1996 | | C1 Module Flow Calibration |
| 8/26/1996 | | D1 Module Flow Calibration |
| 8/26/1996 | | Routine annual maintenance |
| 8/26/1996 | | A1 Module Flow Calibration |
| 8/24/1995 | | A1 Module Flow Calibration |
| 8/24/1995 | | B1 Module Flow Calibration |
| 8/24/1995 | | C1 Module Flow Calibration |
| 8/24/1995 | | D1 Module Flow Calibration |
| 8/24/1995 | | Routine annual maintenance |
| 8/23/1995 | | Smoke from fires in area |
| 4/26/1995 | | A1 Module area increased from 2.20 to 3.53 sq cm |
| 8/18/1994 | | A1 Module Flow Calibration |
| 8/18/1994 | | A1 Module pump replaced |
| 8/18/1994 | | B1 Module Flow Calibration |
| 8/18/1994 | | B1 Module pump replaced |
| 8/18/1994 | | C1 Module Flow Calibration |
| 8/18/1994 | | C1 Module pump replaced |
| 8/18/1994 | | D1 Module Flow Calibration |
| 8/18/1994 | | D1 Module pump replaced |
| 8/18/1994 | | Routine annual maintenance |
| 8/18/1994 | | Site moved inside about 150 yards from old stand |
| 8/18/1994 | | Moved ACAD1 from outdoors to indoors 150 yards |
| 4/15/1993 | | Routine annual maintenance |