Pennsylvania Code
Title 25 - ENVIRONMENTAL PROTECTION
Part I - Department of Environmental Protection
Subpart D - Environmental Health and Safety
Article V - Radiological Health
Chapter 236 - LOW-LEVEL RADIOACTIVE WASTE MANAGEMENT AND DISPOSAL
Subchapter B - REQUIREMENTS FOR SITING THE REGIONAL DISPOSAL FACILITY
PHASE I SCREENING REQUIREMENTS
Section 236.127 - Subsurface geology and hydrology
Universal Citation: 25 PA Code ยง 236.127
Current through Register Vol. 54, No. 44, November 2, 2024
(a) Disqualifying criteria. Potentially suitable sites may not be located in areas where there is limestone or other predominantly carbonate lithologic units which exhibit one of the following characteristics:
(1) Outcrop at the
surface.
(2) Occur within 50 feet
of the surface and are greater than 5 feet thick.
(3) Have been identified as areas with a
potential for subsidence.
(4)
Currently exhibit evidence of subsidence at the surface.
(b) Evaluation requirements.
(1) The geology at potentially suitable sites
shall be evaluated with respect to regional and local stratigraphy, lithologies
and potential impact on site stability. Descriptions, illustrations and
evaluations shall include characteristics such as local stratigraphic units and
their accepted names, relative ages, lithologic descriptions and genetic
relationships.
(2) Depths to local
and regional zones of permanent saturations including seasonal fluctuations,
shall be evaluated. The probability and extent of both permanent and seasonal
perched water tables potentially affected by a site shall be
evaluated.
(3) Local and
potentially affected aquifers shall be described, evaluated and illustrated
with respect to the following:
(i)
Characteristics, such as lateral extent and thickness.
(ii) Rates, directions and volumes of
groundwater flow.
(iii) Porosities
and permeabilities.
(iv) Recharge
areas and discharge areas.
(v)
Reported chemical properties.
(4) Site-specific and local soil conditions
shall be evaluated with respect to physical, chemical and mineralogical
properties. Characteristics to be evaluated include:
(i) Lateral extent and thickness of soil
horizons.
(ii) Classification
names.
(iii) Relative
ages.
(iv) Genetic
relationships.
(v) Porosities and
permeabilities.
(vi) Rates,
directions and conditions of surface and subsurface flow.
This section cited in 25 Pa. Code § 236.101 (relating to scope and applicability); 25 Pa. Code § 236.104 (relating to siting process); 25 Pa. Code § 236.108 (relating to site justification); and 25 Pa. Code § 236.121 (relating to general requirements).
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