GAMA: Groundwater Ambient Monitoring & Assessment Program
CHEMICALS OF CONCERN (COC) - GROUNDWATER INFORMATION SHEETS
The Groundwater Special Studies Unit has compiled technical information on some higher profile Chemicals of Concern (COCs) that may pose a threat to groundwater quality in the State. Groundwater Information Sheets for each COC and are intended as a resource for SWRCB and RWQCB staff and are periodically updated to reflect current knowledge and technology.
The types of information about a COC that can be found on a Groundwater Information Sheet include:
- Chemical formula, aliases, and identification numbers
- Regulatory and water quality levels
- Summary information pertaining to detection in California's groundwater
- Analytical test methods, regulatory testing requirements, and known analytical limitations
- Discussion of anthropogenic and natural sources
- Environmental fate and transport characteristics
- History of occurrence
- Remediation / treatment technologies
- Adverse health effects
- Key references
The COCs that currently have a completed Groundwater Information Sheet include:
- Arsenic
- Bacteria Indicators
- Dibromo-3-chloropropane (DBCP)
- Hexavalent Chromium (Cr 6)
- Methyl tert-Butyl Ether (MTBE)
- Nitrate
- N-nitrosodimethylamine (NDMA)
- Perchlorate
- Radionuclides
- Tetrachloroethylene (PCE)
- Trichloroethylene (TCE)
- 1,2,3-Trichloropropane (TCP)
- 1,4 Dioxane