| Appendix A. Analytical results for 1,4-dioxane from wells sampled during 2002–2009 in the vicinity of the Tucson International Airport Area Superfund Site, Arizona.   |                         |         |               |                                              |                                          |                                           |             |                                            |                                            |                  |                                                       |                                                                                            |  |  |  |  |  |  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------|---------|---------------|----------------------------------------------|------------------------------------------|-------------------------------------------|-------------|--------------------------------------------|--------------------------------------------|------------------|-------------------------------------------------------|--------------------------------------------------------------------------------------------|--|--|--|--|--|--|
| [-- or ND, no data]                                                                                                                                                    |                         |         |               |                                              |                                          |                                           |             |                                            |                                            |                  |                                                       |                                                                                            |  |  |  |  |  |  |
| Local Well identifier1                                                                                                                                                 | Agency well identifier2 | Agency3 | Well type4    | Completedwell depth(feet below land surface) | Well opening(s)(feet below land surface) | Source for well construction information5 | Sample date | 1,4-dioxane concentration plotted (μg/L)6  | 1,4-dioxane concentration reported (μg/L)  | Sampling agency7 | Reference8                                            | Remarks                                                                                    |  |  |  |  |  |  |
| B-103 A                                                                                                                                                                | 320837110585001         | USGS    | Former Supply | 522                                          | 65 - 150                                 | USGS                                      | 09/18/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 155 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 180 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 150 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 150 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 150 feet below well head. |  |  |  |  |  |  |
| C-064 A                                                                                                                                                                | 320828110575201         | USGS    | Former Supply | 189                                          | 75 - 165                                 | USGS                                      | 08/15/2007  | 1.7                                        | 1.7                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 114 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 1.7                                        | 1.7                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 120 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 1.4                                        | 1.4                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 120 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 1.5                                        | 1.5                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 120 feet below well head. |  |  |  |  |  |  |
| C-064 B                                                                                                                                                                | 320826110574801         | USGS    | Former Supply | 900                                          | 107 - 900                                | USGS                                      | 08/15/2007  | 1.6                                        | 1.6                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 118 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 1.7                                        | 1.7                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 120 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 1.5                                        | 1.5                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 120 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 2.0                                        | 2.0                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 120 feet below well head. |  |  |  |  |  |  |
| C-066 A                                                                                                                                                                | 320732110582601         | USGS    | Former Supply | 743                                          | 68 - 743                                 | USGS                                      | 08/15/2007  | 4                                          | 4                                          | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 84 feet below well head.  |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 3.6                                        | 3.6                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 100 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 2.7                                        | 2.7                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 100 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 1.9                                        | 1.9                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 100 feet below well head. |  |  |  |  |  |  |
| C-077 A                                                                                                                                                                | 320815110585201         | USGS    | Former Supply | 150                                          | 50 - 150                                 | Tucson Water                              | 09/18/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 90 feet below well head.  |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 75 feet below well head.  |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 0.77                                       | 0.77                                       | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 75 feet below well head.  |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 75 feet below well head.  |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 0.53                                       | 0.53                                       | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 75 feet below well head.  |  |  |  |  |  |  |
| C-078 A                                                                                                                                                                | 320810110585001         | USGS    | Former Supply | 229.6                                        | 31.8 - 229.6                             | USGS                                      | 09/18/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 175 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 170 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 0.61                                       | 0.61                                       | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 170 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 0.52                                       | 0.52                                       | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 170 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 0.58                                       | 0.58                                       | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 170 feet below well head. |  |  |  |  |  |  |
| C-081 A                                                                                                                                                                | 320713110583101         | USGS    | Former Supply | 520                                          | 79 - 520                                 | Tucson Water                              | 09/18/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 275 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 99 feet below well head.  |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 185 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 185 feet below well head. |  |  |  |  |  |  |
| D-7                                                                                                                                                                    | 55-569349               | ADWR    | Monitoring    | 139                                          | 129 - 139                                | ADEQ                                      | 03/01/2007  | 7.4                                        | 7.4                                        | TIAA             | Conestoga-Rovers & Associates, 2007               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2009  | 6.3                                        | 6.3                                        | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
| EPA 7                                                                                                                                                                  | 320750110574601         | USGS    | Monitoring    | 393                                          | 323 - 372                                | USGS                                      | 09/17/2006  | 5.8                                        | 5.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2007  | 4.8                                        | 4.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| EPA 10                                                                                                                                                                 | 320911110580601         | USGS    | Monitoring    | 235                                          | 167 - 215                                | USGS                                      | 06/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/16/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/16/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 0.76                                       | 0.76                                       | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2008  | 1.8                                        |                                            | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2008  | 1.3                                        |                                            | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2009  | 0.63                                       | 0.63                                       | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| EW-4                                                                                                                                                                   | 55-593190               | ADWR    | Monitoring    | 126                                          | 109 - 119                                | ADEQ                                      | 06/13/2007  | 2.1                                        | 2.1                                        | TIAA             | Conestoga-Rovers & Associates, 2007               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/05/2009  | 3.9                                        | 3.9                                        | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
| PK-010 A                                                                                                                                                               | 320837110584401         | USGS    | Former Supply | 250                                          | 92 - 250                                 | USGS                                      | 09/18/2006  | 2                                          | 2                                          | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 155 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 1.9                                        | 1.9                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 188 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 1.8                                        | 1.8                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 190 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 1.5                                        | 1.5                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 190 feet below well head. |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/28/2009  | 1.6                                        | 1.6                                        | USGS             | Tillman, 2009                                         | Well not purged prior to sample collection by bailer at depth of 190 feet below well head. |  |  |  |  |  |  |
| PW-003                                                                                                                                                                 | 55-637976               | ADWR    | Private       | unknown                                      | unknown                                  | PDEQ                                      | 02/26/2002  | 0.5                                        | ND                                         | ADEQ             | Pima County Department of Environmental Quality, 2009 | Date for 2002 sample not reported.  Plotted as occurring on 2/26/2002.                     |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2003  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2004  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/01/2005  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2007  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/04/2008  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2009  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
| PW-007                                                                                                                                                                 | 320853110575401         | ADWR    | Private       | 150                                          | unknown                                  | PDEQ                                      | 02/26/2002  | 0.5                                        | ND                                         | ADEQ             | Pima County Department of Environmental Quality, 2009 | Date for 2002 sample not reported.  Plotted as occurring on 2/26/2002.                     |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/28/2003  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2004  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/01/2005  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2009  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
| PW-011                                                                                                                                                                 | 320746110574101         | ADWR    | Private       | 223                                          | unknown                                  | PDEQ                                      | 04/21/2003  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/05/2004  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/01/2005  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2007  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/04/2008  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2009  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
| PW-012                                                                                                                                                                 | 55-640042               | ADWR    | Private       | 212                                          | unknown                                  | PDEQ                                      | 02/26/2002  | 0.5                                        | ND                                         | ADEQ             | Pima County Department of Environmental Quality, 2009 | Date for 2002 sample not reported.  Plotted as occurring on 2/26/2002.                     |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/28/2003  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2004  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2005  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2007  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/04/2008  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2009  | 0.5                                        | <1.0UJ                                  | PDEQ             | Pima County Department of Environmental Quality, 2009 | "UJ = Reporting limit is considered an estimated value"                                    |  |  |  |  |  |  |
| PW-013                                                                                                                                                                 | --                      | --      | Private       | unknown                                      | unknown                                  | PDEQ                                      | 02/26/2002  | 1.7                                        | 1.7                                        | ADEQ             | Pima County Department of Environmental Quality, 2009 | Date for 2002 sample not reported.  Plotted as occurring on 2/26/2002.                     |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/21/2003  | 1.8                                        | 1.8                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2004  | 1.5                                        | 1.5                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2005  | 1.9                                        | 1.9                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 1.7                                        | 1.7                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2007  | 2.3                                        | 2.3                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/05/2008  | 2                                          | 2                                          | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2009  | 0.5                                        | <1.0UJ                                  | PDEQ             | Pima County Department of Environmental Quality, 2009 | "UJ = Reporting limit is considered an estimated value"                                    |  |  |  |  |  |  |
| PW-014                                                                                                                                                                 | --                      | --      | Private       | unknown                                      | unknown                                  | PDEQ                                      | 02/26/2002  | 6.8                                        | 6.8                                        | ADEQ             | Pima County Department of Environmental Quality, 2009 | Date for 2002 sample not reported.  Plotted as occurring on 2/26/2002.                     |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2003  | 7.1                                        | 7.1                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2004  | 7.1                                        | 7.1                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2005  | 6.6                                        | 6.6                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 7                                          | 7                                          | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2007  | 6.8                                        | 6.8                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/05/2008  | 6.1                                        | 6.1                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2009  | 1.6                                        | 1.6                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
| PW-020                                                                                                                                                                 | 320755110583201         | USGS    | Private       | 140                                          | unknown                                  | PDEQ                                      | 02/26/2002  | 8.5                                        | 8.5                                        | ADEQ             | Pima County Department of Environmental Quality, 2009 | Date for 2002 sample not reported.  Plotted as occurring on 2/26/2002.                     |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/26/2003  | 10                                         | 10                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/02/2004  | 10                                         | 10                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2005  | 8                                          | 8                                          | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 7.2                                        | 7.2                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 09/11/2006  | 6.8                                        | 6.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2007  | 6.4                                        | 6.4                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 5.3                                        | 5.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/20/2008  | 4.3                                        | 4.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/05/2008  | 4.2                                        | 4.2                                        | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 3.8                                        | 3.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/29/2008  | 3.8                                        | 3.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2009  | 0.5                                        | ND                                         | PDEQ             | Pima County Department of Environmental Quality, 2009 |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 3.0                                        | 3.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| R-001 A                                                                                                                                                                | 320834110583301         | USGS    | Supply        | 165                                          | 110 - 150                                | USGS                                      | 04/08/2002  | 4.8                                        | 4.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 4.5                                        | 4.5                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 6.2                                        | 6.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 5.9                                        | 5.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 5.5                                        | 5.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/16/2005  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 6.4                                        | 6.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 7.5                                        | 7.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 7.8                                        | 7.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 5                                          | 5                                          | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 3.7                                        | 3.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 6.2                                        | 6.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 5.2                                        | 5.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 8.2                                        | 8.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 7.1                                        | 7.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 7.4                                        | 7.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 5.9                                        | 5.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 6.4                                        | 6.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| R-002 A                                                                                                                                                                | 320840110582701         | USGS    | Supply        | 171                                          | 110 - 150                                | USGS                                      | 04/08/2002  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 9.4                                        | 9.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 9.2                                        | 9.2                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 8.3                                        | 8.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 8                                          | 8                                          | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 8.6                                        | 8.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 9.4                                        | 9.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/16/2005  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 8.8                                        | 8.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 9.1                                        | 9.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 9.9                                        | 9.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 8.6                                        | 8.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 6.2                                        | 6.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 4.2                                        | 4.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 7.3                                        | 7.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 8.1                                        | 8.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 10.1                                       | 10.1                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 7.7                                        | 7.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 8.2                                        | 8.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 6.6                                        | 6.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| R-003 A                                                                                                                                                                | 320842110581901         | USGS    | Supply        | 169                                          | 120 - 155                                | USGS                                      | 04/08/2002  | 8.7                                        | 8.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 11.0                                       | 11.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 8.9                                        | 8.9                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 11.2                                       | 11.2                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2004  | 9.2                                        | 9.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 8.7                                        | 8.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 10.5                                       | 10.5                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 11.1                                       | 11.1                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 8.1                                        | 8.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 9.6                                        | 9.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 8.1                                        | 8.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 10.8                                       | 10.8                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 8.8                                        | 8.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 5.7                                        | 5.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 9.2                                        | 9.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 9.3                                        | 9.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 8.6                                        | 8.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 9.3                                        | 9.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 7.5                                        | 7.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| R-004 A                                                                                                                                                                | 320843110581301         | USGS    | Supply        | 175                                          | 125 - 160                                | USGS                                      | 04/08/2002  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 9.5                                        | 9.5                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 7.7                                        | 7.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 8.6                                        | 8.6                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 7.3                                        | 7.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 9.2                                        | 9.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 10.3                                       | 10.3                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 7.5                                        | 7.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 8.4                                        | 8.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/08/2006  | 9.1                                        | 9.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 7.3                                        | 7.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 9.2                                        | 9.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 3.9                                        | 3.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 7.0                                        | 7.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 10.4                                       | 10.4                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 6.2                                        | 6.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 8.1                                        | 8.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 8.3                                        | 8.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 8.4                                        | 8.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 7.3                                        | 7.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 8.1                                        | 8.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 7.1                                        | 7.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| R-005 A                                                                                                                                                                | 320844110580801         | USGS    | Supply        | 155                                          | 100 - 140                                | USGS                                      | 04/08/2002  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 7.3                                        | 7.3                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 6.3                                        | 6.3                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 6.4                                        | 6.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 6.0                                        | 6.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 7.5                                        | 7.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 8.2                                        | 8.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/16/2005  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/08/2006  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 6.0                                        | 6.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 7.5                                        | 7.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 4.1                                        | 4.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 8.9                                        | 8.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2008  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 6.7                                        | 6.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 5.7                                        | 5.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 7.4                                        | 7.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 6.3                                        | 6.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 6.2                                        | 6.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| R-006 A                                                                                                                                                                | 320957110585101         | USGS    | Supply        | 419                                          | 180 - 400                                | USGS                                      | 06/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/16/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/18/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/31/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/12/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/22/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/27/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/15/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 06/26/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/23/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 09/17/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/21/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| R-007 A                                                                                                                                                                | 320956110584901         | USGS    | Supply        | 424                                          | 178 - 398                                | USGS                                      | 06/07/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 1.0                                        | 1.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/18/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/08/2006  | 1.3                                        | 1.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/27/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/17/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/18/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/31/2007  | 1.1                                        | 1.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/12/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/22/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/27/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/15/2008  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 1.1                                        | 1.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 06/26/2008  | 1.3                                        | 1.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/23/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 1.5                                        | 1.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 09/17/2008  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/21/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| R-008 A                                                                                                                                                                | 320954110584201         | USGS    | Supply        | 426                                          | 180 - 400                                | USGS                                      | 06/06/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/18/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/08/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/18/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/31/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/12/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/22/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/27/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/15/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 06/26/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/23/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 09/17/2008  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/21/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| R-009 A                                                                                                                                                                | 320953110583501         | USGS    | Supply        | 425                                          | 175 - 395                                | USGS                                      | 06/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/18/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/25/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/16/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2005  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/08/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/13/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/13/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/18/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/12/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/22/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/27/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/15/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/14/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 06/26/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 07/23/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/25/2008  | 0.58                                       | 0.58                                       | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 09/17/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/21/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 12/30/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/13/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| S-26                                                                                                                                                                   | 55-553145               | ADWR    | Monitoring    | 126                                          | 108.1 - 123.1                            | ADEQ                                      | 03/09/2007  | 0.5                                        | <1.0                                    | TIAA             | Conestoga-Rovers & Associates, 2007               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 1.4                                        | 1.4                                        | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
| S-37                                                                                                                                                                   | 55-562570               | ADWR    | Monitoring    | 112                                          | 100.9 - 110.4                            | ADEQ                                      | 03/13/2007  | 4.4                                        | 4.4                                        | TIAA             | Conestoga-Rovers & Associates, 2007               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 8.2                                        | 8.2                                        | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 8.2                                        | 8.2                                        | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 6                                          | 6                                          | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
| S-39                                                                                                                                                                   | 55-569350               | ADWR    | Monitoring    | 131                                          | 126 - 129                                | ADEQ                                      | 03/08/2007  | 5.0                                        | 5.0                                        | TIAA             | Conestoga-Rovers & Associates, 2007               |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 5.5                                        | 5.5                                        | TIAA             | Conestoga-Rovers & Associates, 2009               |                                                                                            |  |  |  |  |  |  |
| SS-021 A                                                                                                                                                               | 320921110592001         | USGS    | Supply        | 320                                          | 120 - 300                                | USGS                                      | 09/03/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/09/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/17/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/20/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/20/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/12/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2009  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| SS-023 B                                                                                                                                                               | 320927110591001         | USGS    | Supply        | 420                                          | 260 - 400                                | USGS                                      | 06/06/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/09/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/17/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/19/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/20/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/20/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/15/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-055 B                                                                                                                                                               | 320803110572401         | USGS    | Monitoring    | 233                                          | 213 - 233                                | USGS                                      | 02/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/05/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/22/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-056 B                                                                                                                                                               | 320746110581101         | USGS    | Monitoring    | 178                                          | 158 - 178                                | USGS                                      | 02/04/2003  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2006  | 11                                         | 11                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2007  | 11                                         | 11                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/22/2008  | 8.3                                        | 8.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2009  | 7.6                                        | 7.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-056 C                                                                                                                                                               | 320746110581201         | USGS    | Monitoring    | 130                                          | 110 - 130                                | USGS                                      | 02/04/2003  | 12.0                                       | 12.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2007  | 9.4                                        | 9.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 8.6                                        | 8.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 8.6                                        | 8.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2009  | 7.6                                        | 7.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-057 A                                                                                                                                                               | 320801110580201         | USGS    | Monitoring    | 160                                          | 130 - 160                                | USGS                                      | 02/06/2003  | 12.0                                       | 12.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2006  | 11                                         | 11                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 8.5                                        | 8.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/31/2008  | 9.6                                        | 9.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 8.3                                        | 8.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-058 A                                                                                                                                                               | 320835110580501         | USGS    | Monitoring    | 400                                          | 360 - 400                                | USGS                                      | 02/12/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/31/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-058 B                                                                                                                                                               | 320834110580401         | USGS    | Monitoring    | 144.5                                        | 124.5 - 144.5                            | USGS                                      | 06/05/2002  | 6.4                                        | 6.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/04/2003  | 7.8                                        | 7.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 5.7                                        | 5.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/11/2004  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/11/2004  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/12/2004  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2005  | 6.4                                        | 6.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2005  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2006  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 7.6                                        | 7.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/28/2007  | 6.5                                        | 6.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/28/2007  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/31/2008  | 8.2                                        | 8.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/31/2008  | 7.5                                        | 7.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/21/2008  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/17/2008  | 2.2                                        | 2.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/18/2008  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2008  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2009  | 6.7                                        | 6.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-059 A                                                                                                                                                               | 320846110583801         | USGS    | Monitoring    | 401                                          | 361 - 401                                | USGS                                      | 08/14/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-059 B                                                                                                                                                               | 320845110583801         | USGS    | Monitoring    | 141                                          | 121 - 141                                | USGS                                      | 06/06/2002  | 6.9                                        | 6.9                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2003  | 8.2                                        | 8.2                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 8.5                                        | 8.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 7.6                                        | 7.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 7                                          | 7                                          | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 7.8                                        | 7.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2009  | 7.0                                        | 7.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-076 S                                                                                                                                                               | 320944110583901         | USGS    | Monitoring    | 400                                          | 300 - 400                                | USGS                                      | 02/04/2003  | 2.0                                        | 2.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/04/2003  | 2.2                                        | 2.2                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2004  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 1.1                                        | 1.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 1.2                                        | 1.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/16/2007  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 1.0                                        | 1.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2008  | 1.0                                        | 1.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 0.84                                       | 0.84                                       | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/27/2008  | 1.2                                        | 1.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/27/2008  | 1.8                                        | 1.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2009  | 1.1                                        | 1.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 1.3                                        | 1.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-077 S                                                                                                                                                               | 320737110581001         | USGS    | Monitoring    | 130                                          | 100 - 130                                | USGS                                      | 02/10/2003  | 12                                         | 12                                         | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2003  | 12                                         | 12                                         | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 9.3                                        | 9.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2007  | 8.9                                        | 8.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/22/2008  | 8.6                                        | 8.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2009  | 7.3                                        | 7.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-078 S                                                                                                                                                               | 320803110581701         | USGS    | Monitoring    | 160                                          | 110 - 160                                | USGS                                      | 02/06/2003  | 11.0                                       | 11.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2003  | 13.0                                       | 13.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2006  | 9.6                                        | 9.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/09/2007  | 8.6                                        | 8.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 9.8                                        | 9.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/26/2008  | 10                                         | 10                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2009  | 9.0                                        | 9.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-079 S                                                                                                                                                               | 320723110581701         | USGS    | Monitoring    | 145                                          | 95 - 145                                 | USGS                                      | 06/05/2002  | 10.0                                       | 10.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/05/2003  | 12.0                                       | 12.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2003  | 8.4                                        | 8.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 11.5                                       | 11.5                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 11.0                                       | 11.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2004  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/04/2004  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/27/2004  | 8.5                                        | 8.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/10/2004  | 9.5                                        | 9.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2005  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/01/2005  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2006  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2006  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/01/2006  | 6.2                                        | 6.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2006  | 6.9                                        | 6.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/08/2006  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2007  | 6.0                                        | 6.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2007  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/30/2007  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 6.2                                        | 6.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 5.2                                        | 5.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/22/2008  | 4.8                                        | 4.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/22/2008  | 4.3                                        | 4.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2008  | 4.5                                        | 4.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 3.3                                        | 3.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-080 S                                                                                                                                                               | 320821110580701         | USGS    | Monitoring    | 150                                          | 100 - 150                                | USGS                                      | 02/06/2003  | 7.2                                        | 7.2                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/05/2004  | 7.3                                        | 7.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/05/2004  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2005  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2005  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2005  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 7.8                                        | 7.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 7.1                                        | 7.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 7.4                                        | 7.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/01/2007  | 6.8                                        | 6.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/01/2007  | 6.4                                        | 6.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 6.2                                        | 6.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 5.5                                        | 5.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/31/2008  | 1.9                                        | 1.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/31/2008  | 6.8                                        | 6.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2008  | 6.0                                        | 6.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2008  | 5.5                                        | 5.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 6.2                                        | 6.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-081 S                                                                                                                                                               | 320819110583601         | USGS    | Monitoring    | 175                                          | 95 - 175                                 | USGS                                      | 06/06/2002  | 2.9                                        | 2.9                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/05/2003  | 3.4                                        | 3.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2003  | 2.6                                        | 2.6                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2004  | 3.1                                        | 3.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 09/01/2004  | 4.1                                        | 4.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2005  | 3.8                                        | 3.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2006  | 5.5                                        | 5.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 4.8                                        | 4.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/14/2006  | 5                                          | 5                                          | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/15/2007  | 5.8                                        | 5.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 5.3                                        | 5.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2007  | 5.1                                        | 5.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2008  | 5.8                                        | 5.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2008  | 5.5                                        | 5.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/29/2008  | 5.5                                        | 5.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/29/2008  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2008  | 4.9                                        | 4.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/18/2008  | 5.2                                        | 5.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 4.1                                        | 4.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-082 S                                                                                                                                                               | 320833110582701         | USGS    | Monitoring    | 158                                          | 108 - 158                                | USGS                                      | 06/06/2002  | 9.4                                        | 9.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2003  | 11.0                                       | 11.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2003  | 7.0                                        | 7.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/11/2004  | 7.0                                        | 7.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 9.3                                        | 9.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 8.4                                        | 8.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/16/2005  | 7.4                                        | 7.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 9.1                                        | 9.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2006  | 9.1                                        | 9.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2006  | 9                                          | 9                                          | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/28/2007  | 7.2                                        | 7.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/28/2007  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 8.8                                        | 8.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 8.6                                        | 8.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2008  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 7.2                                        | 7.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-084 S                                                                                                                                                               | 320858110580201         | USGS    | Monitoring    | 160                                          | 130 - 160                                | USGS                                      | 02/05/2003  | 1                                          | 1                                          | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2006  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/13/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/28/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-085 S                                                                                                                                                               | 320909110582101         | USGS    | Monitoring    | 190                                          | 110 - 190                                | USGS                                      | 06/05/2002  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/11/2003  | 7.7                                        | 7.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 5.0                                        | 5.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 7.0                                        | 7.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 4.9                                        | 4.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/05/2004  | 5.7                                        | 5.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/11/2004  | 4.5                                        | 4.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/09/2004  | 6.0                                        | 6.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2005  | 4.7                                        | 4.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2005  | 6.5                                        | 6.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/01/2005  | 6.1                                        | 6.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2006  | 7.7                                        | 7.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2006  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/01/2006  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2006  | 8.3                                        | 8.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2006  | 7.6                                        | 7.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/08/2006  | 7.6                                        | 7.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/08/2006  | 8.1                                        | 8.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/05/2007  | 4.8                                        | 4.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/31/2007  | 5.1                                        | 5.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 7.2                                        | 7.2                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 9.8                                        | 9.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 8.1                                        | 8.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2008  | 6.6                                        | 6.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 7.0                                        | 7.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-086 S                                                                                                                                                               | 320728110580101         | USGS    | Monitoring    | 140                                          | 100 - 140                                | USGS                                      | 06/05/2002  | 11.0                                       | 11.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2003  | 15.0                                       | 15.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2003  | 11.0                                       | 11.0                                       | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 8.6                                        | 8.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/17/2004  | 9.1                                        | 9.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/12/2004  | 9.4                                        | 9.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/12/2004  | 10.3                                       | 10.3                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/14/2005  | 8.3                                        | 8.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/14/2005  | 8.6                                        | 8.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/15/2005  | 7.9                                        | 7.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 9.9                                        | 9.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/06/2006  | 10.2                                       | 10.2                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 10.0                                       | 10.0                                       | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 8.6                                        | 8.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/14/2007  | 8.4                                        | 8.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 9.3                                        | 9.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/21/2008  | 7.8                                        | 7.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/21/2008  | 6.7                                        | 6.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/18/2008  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2008  | 8.0                                        | 8.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2009  | 7.7                                        | 7.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-087 S                                                                                                                                                               | 320927110590001         | USGS    | Monitoring    | 240                                          | 140 - 240                                | USGS                                      | 02/11/2003  | 1.6                                        | 1.6                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2006  | 1.4                                        | 1.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 2.6                                        | 2.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 1.4                                        | 1.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 1.9                                        | 1.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 1.8                                        | 1.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2008  | 1.6                                        | 1.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 1.6                                        | 1.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 1.5                                        | 1.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/16/2008  | 1.6                                        | 1.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 1.5                                        | 1.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| WR-089 S                                                                                                                                                               | 320933110583201         | USGS    | Monitoring    | 405                                          | 300 - 400                                | USGS                                      | 02/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 1                                          | 1                                          | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 2.1                                        | 2.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 2.1                                        | 2.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 2.5                                        | 2.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2009  | 2.6                                        | 2.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-090 S                                                                                                                                                               | 320933110583001         | ADWR    | Monitoring    | 215                                          | 115 - 215                                | ADWR                                      | 02/04/2003  | 3.8                                        | 3.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 3.2                                        | 3.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 3.4                                        | 3.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 5.7                                        | 5.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2008  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2008  | 4.6                                        | 4.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
| WR-091 S                                                                                                                                                               | 320907110582801         | USGS    | Monitoring    | 175                                          | 125 - 175                                | USGS                                      | 02/11/2003  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2006  | 4.8                                        | 4.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/13/2007  | 4.6                                        | 4.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/28/2008  | 5.1                                        | 5.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2009  | 4.1                                        | 4.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-163 A                                                                                                                                                               | 320902110583801         | USGS    | Monitoring    | 350                                          | 300 - 350                                | USGS                                      | 06/06/2002  | 4.3                                        | 4.3                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2003  | 4.7                                        | 4.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 4.4                                        | 4.4                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2004  | 4.3                                        | 4.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2004  | 4.3                                        | 4.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/16/2005  | 3.9                                        | 3.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/17/2005  | 3.6                                        | 3.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2006  | 3.2                                        | 3.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 3.2                                        | 3.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 3                                          | 3                                          | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/05/2007  | 1.7                                        | 1.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/05/2007  | 2.0                                        | 2.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 2.7                                        | 2.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 8.8                                        | 8.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 2.5                                        | 2.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 01/30/2008  | 2.6                                        | 2.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2008  | 2.0                                        | 2.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2008  | 2.0                                        | 2.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 2.0                                        | 2.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-165 A                                                                                                                                                               | 320934110584701         | USGS    | Monitoring    | 350                                          | 300 - 350                                | USGS                                      | 02/11/2003  | 6.0                                        | 6.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2003  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2003  | 4.8                                        | 4.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 4.9                                        | 4.9                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2004  | 4.1                                        | 4.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/05/2004  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2004  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2004  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/09/2004  | 5.5                                        | 5.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/11/2005  | 4.3                                        | 4.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/24/2005  | 4.7                                        | 4.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/01/2005  | 5.1                                        | 5.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2006  | 5.0                                        | 5.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/01/2006  | 4.3                                        | 4.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 4.9                                        | 4.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/08/2006  | 5.2                                        | 5.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/06/2007  | 4.5                                        | 4.5                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/06/2007  | 4.4                                        | 4.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/31/2007  | 4.4                                        | 4.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 6.1                                        | 6.1                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 4.4                                        | 4.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 5.9                                        | 5.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/27/2008  | 5.2                                        | 5.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2008  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 5.1                                        | 5.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/16/2008  | 5.3                                        | 5.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/27/2008  | 5.6                                        | 5.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2009  | 5.4                                        | 5.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/03/2009  | 5.6                                        | 5.6                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-236 A                                                                                                                                                               | 320946110591701         | USGS    | Monitoring    | 250                                          | 150 - 250                                | USGS                                      | 08/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/28/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2008  | 1.5                                        | 1.5                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2009  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2009  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2009  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-237 A                                                                                                                                                               | 320956110590101         | USGS    | Monitoring    | 400                                          | 150 - 400                                | USGS                                      | 08/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2003  | 1.0                                        | 1.0                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 04/16/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/13/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-238 A                                                                                                                                                               | 321000110585601         | USGS    | Monitoring    | 380                                          | 150 - 280                                | USGS                                      | 08/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/04/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/13/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-239 A                                                                                                                                                               | 320958110583301         | USGS    | Monitoring    | 400                                          | 150 - 400                                | USGS                                      | 08/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2002  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/03/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/03/2003  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 11/07/2006  | 0.5                                        | <1.0                                    | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/13/2007  | 0.5                                        | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/25/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/07/2008  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2009  | 0.25                                       | ND                                         | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-240 A                                                                                                                                                               | 320940110582501         | USGS    | Monitoring    | 400                                          | 150 - 400                                | USGS                                      | 02/11/2003  | 1.7                                        | 1.7                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/23/2006  | 1.7                                        | 1.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 2.8                                        | 2.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2007  | 3.2                                        | 3.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/17/2008  | 2.6                                        | 2.6                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/17/2008  | 2.2                                        | 2.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2008  | 3.1                                        | 3.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 2.4                                        | 2.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 2.8                                        | 2.8                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/16/2008  | 3.3                                        | 3.3                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2009  | 2.8                                        | 2.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2009  | 3.2                                        | 3.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2009  | 3.0                                        | 3.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-241 A                                                                                                                                                               | 320914110585201         | USGS    | Monitoring    | 402                                          | 152 - 402                                | USGS                                      | 02/11/2003  | 3.8                                        | 3.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/11/2003  | 3.3                                        | 3.3                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/05/2003  | 2.8                                        | 2.8                                        | Tucson Water     | Malcolm Pirnie, 2007                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2004  | 2.4                                        | 2.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 2.8                                        | 2.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/31/2004  | 2.8                                        | 2.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/10/2004  | 3.2                                        | 3.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/16/2005  | 2.7                                        | 2.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2005  | 2.9                                        | 2.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/09/2006  | 2.9                                        | 2.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2006  | 3.1                                        | 3.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/22/2006  | 2.9                                        | 2.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/06/2007  | 2.1                                        | 2.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 3.4                                        | 3.4                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/08/2007  | 3.0                                        | 3.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/21/2008  | 2.3                                        | 2.3                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/21/2008  | 2.1                                        | 2.1                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 03/18/2008  | 2.2                                        | 2.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 05/28/2008  | 2.4                                        | 2.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 1.9                                        | 1.9                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2008  | 1.9                                        | 1.9                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 10/16/2008  | 2.4                                        | 2.4                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 1.7                                        | 1.7                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/10/2009  | 1.8                                        | 1.8                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/06/2009  | 1.7                                        | 1.7                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
| WR-700 A                                                                                                                                                               | 320851114582301         | USGS    | Monitoring    | 177                                          | 100 - 170                                | USGS                                      | 08/05/2008  | 7.0                                        | 7.0                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 02/19/2009  | 5.2                                        | 5.2                                        | Tucson Water     | Malcolm Pirnie, 2009                                  |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           | 08/04/2009  | 6.0                                        | 6.0                                        | USGS             | Tillman, 2009                                         |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           |             |                                            |                                            |                  |                                                       |                                                                                            |  |  |  |  |  |  |
| see "footnotes" worksheet for table footnotes.                                                                                                                         |                         |         |               |                                              |                                          |                                           |             |                                            |                                            |                  |                                                       |                                                                                            |  |  |  |  |  |  |
|                                                                                                                                                                        |                         |         |               |                                              |                                          |                                           |             |                                            |                                            |                  |                                                       |                                                                                            |  |  |  |  |  |  |