Code of Massachusetts Regulations
310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION
Title 310 CMR 40.0000 - Massachusetts Contingency Plan
Subpart C - NOTIFICATION OF RELEASES AND THREATS OF RELEASE OF OIL AND HAZARDOUS MATERIAL; IDENTIFICATION AND LISTING OF OIL AND HAZARDOUS MATERIAL
Section 40.0362 - Reportable Concentrations of Oil and Hazardous Material in Groundwater
Universal Citation: 310 CMR 40.0000 MA Code of Regs 40.0362
Current through Register 1531, September 27, 2024
(1) For the purpose of determining whether a notification obligation exists under 310 CMR 40.0315, measured dissolved concentrations of any oil or hazardous material listed at 310 CMR 40.1600 shall be compared to the Reportable Concentration value in the reporting category that best characterizes the site under evaluation, as described below:
(a)
Reporting Category
RCGW-1. Reporting category RCGW-1 shall be applied to all
groundwater samples obtained:
1. within a
Current Drinking Water Source Area; or
2. within a Potential Drinking Water Source
Area.
(b)
Reporting Category RCGW-2. Reporting category RCGW-2
shall be applied to all groundwater samples that are not obtained from category
RCGW-1 areas.
(2) Reporting category RCGW-1 shall be selected whenever and wherever reasonable doubts exist over the selection of the appropriate groundwater Reportable Concentration category.
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