Chlorodifluoromethane
San Gabriel County WD
Chlorodifluoromethane (Freon 22) 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.
10
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 |
|---|---|---|---|---|
| 2014 | 0.0790 ppb | 10 | 4 | ND - 0.250 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-24 | 4C24025-09A | 0.250 ppb |
| 2014-03-24 | 4C24025-07A | ND |
| 2014-03-24 | 4C24025-03A | ND |
| 2014-03-24 | 4C24025-01A | ND |
| 2014-03-24 | 4C24025-05A | 0.150 ppb |
| 2014-09-25 | 4I25045-07A | ND |
| 2014-09-25 | 4I25045-09A | 0.230 ppb |
| 2014-09-25 | 4I25045-01A | ND |
| 2014-09-25 | 4I25045-03A | ND |
| 2014-10-08 | 4J08065-01A | 0.160 ppb |