Dichlorodifluoromethane
City of Petaluma
Dichlorodifluoromethane (Freon-12) is a refrigerant, solvent and aerosol propellant banned in 2000 under the Montreal Protocol because of its ozone-depleting properties. Freons can cause heart, nervous system and liver damage.
13
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-19 | 1610-057-1400 | ND |
| 2015-06-18 | 1610-009-0915 | ND |
| 2016-03-09 | 1610-026-1045 | ND |
| 2016-03-09 | 1610-029-0930 | ND |
| 2016-09-22 | 1610-031-1015 | ND |
| 2016-09-22 | 1610-051-1120 | ND |
| 2017-02-23 | 1610-028-1100 | ND |
| 2018-06-06 | 1610-009-0830 | ND |
| 2018-06-06 | 1610-010-0845 | ND |
| 2018-06-06 | 1610-030-1150 | ND |
| 2018-09-13 | 1610-032-1130 | ND |
| 2019-03-13 | 1610-051-1058 | ND |
| 2019-10-16 | 1610-027-0845 | ND |