2,4,5-TP (Silvex)
Marine Corps Air Station Cherry Point
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
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 |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-10 | 92189322001SOC | ND |
| 2014-05-07 | 92200409002SOC | ND |
| 2014-08-05 | 92212162001SOC | ND |
| 2014-11-06 | C414813-01 | ND |
| 2015-02-03 | ND | |
| 2015-05-05 | ND | |
| 2015-08-18 | ND | |
| 2015-11-05 | ND | |
| 2016-02-04 | 37729_16-03632 | ND |
| 2017-02-16 | 37729_17-05463 | ND |
| 2017-08-17 | 37729_17-29446 | ND |
| 2018-02-08 | 37729_18-05213 | ND |
| 2019-02-20 | 37729_19-07217 | ND |