The MCP GW-3 groundwater standards (310 CMR 40.0974(2)) apply to all groundwater in the Commonwealth. These standards are intended to address the adverse ecological effects that could result from discharge of oil or hazardous material to surface water.

Documentation for the GW-3 Standards

List of Current Method 1 GW-3 Standards - 310 CMR 40.0974(2)

Discussion Document for GW-3 Benchmark values pdf format of    Discussion Document for GW-3 Benchmark values  doc format of Discussion Document for GW-3 Benchmark values