10 CFR § 960.5-2-10 - Hydrology.

---
identifier: "/us/cfr/t10/s960.5-2-10"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 960.5-2-10 - Hydrology."
title_number: 10
title_name: "Energy"
section_number: "960.5-2-10"
section_name: "Hydrology."
chapter_name: "DEPARTMENT OF ENERGY"
part_number: "960"
part_name: "GENERAL GUIDELINES FOR THE PRELIMINARY SCREENING OF POTENTIAL SITES FOR A NUCLEAR WASTE REPOSITORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 2011  42 U.S.C. 7101  42 U.S.C. 10101"
regulatory_source: "49 FR 47752, Dec. 6, 1984, unless otherwise noted."
cfr_part: "960"
---


# 960.5-2-10 Hydrology.

(a) *Qualifying condition.* The site shall be located such that the geohydrologic setting of the site will (1) be compatible with the activities required for repository construction, operation, and closure; (2) not compromise the intended functions of the shaft liners and seals; and (3) permit the requirements specified in § 960.5-1(a)(3) to be met.

(b) *Favorable conditions.* (1) Absence of aquifers between the host rock and the land surface.

(2) Absence of surface-water systems that could potentially cause flooding of the repository.

(3) Availability of the water required for repository construction, operation, and closure.

(c) *Potentially adverse condition.* Ground-water conditions that could require complex engineering measures that are beyond reasonably available technology for repository construction, operation, and closure.

(d) *Disqualifying condition.* A site shall be disqualified if, based on expected ground-water conditions, it is likely that engineering measures that are beyond reasonably available technology will be required for exploratory-shaft construction or for repository construction, operation, or closure.