New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 5 - PETROLEUM STORAGE TANKS
Part 119 - CORRECTIVE ACTION FOR STORAGE TANK SYSTEMS CONTAINING PETROLEUM PRODUCTS
Section 20.5.119.1910 - SECONDARY INVESTIGATION
Universal Citation: 20 NM Admin Code 20.5.119.1910
Current through Register Vol. 35, No. 6, March 26, 2024
A. Owners and operators shall perform a secondary investigation in accordance with a timeline approved by the department or the timeline set forth in Subsection E of 20.5.119.1900 NMAC when the department makes at least one of the following determinations about the site:
(1) the extent
and magnitude of contamination in all media has not been delimited by the
preliminary investigation; or
(2)
the release threatens public health, safety and welfare or the
environment.
B. The secondary investigation shall determine the following:
(1) the horizontal and vertical extent and
magnitude of soil contamination both on and off site;
(2) the horizontal extent and magnitude of
dissolved phase groundwater contamination both on and off site;
(3) the vertical extent and magnitude of
dissolved phase groundwater contamination, when site conditions
warrant;
(4) characteristics,
aerial extent, estimated volume and apparent thickness of NAPL in
wells;
(5) the elevation of
groundwater and surface water and the gradient, rate and direction of
groundwater and surface water flow;
(6) the rate and direction of contaminant
migration;
(7) the hydrologic
properties of the contaminated portion of the aquifer including hydraulic
conductivity, transmissivity and storativity; the department may require field
verification of estimates made from literature;
(8) whether the aquifer is perched;
(9) whether the aquifer is confined or
unconfined; and
(10) any other
technical information requested by the department which is reasonably necessary
to meet the requirements of this part.
Disclaimer: These regulations may not be the most recent version. New Mexico may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.