Document: NUREG-0800
Document ID: cbcf5b42-aac8-43cf-a267-4f72f2392f37
Document Type: srp
Title: HYDROLOGIC DESCRIPTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070100646.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.1
CFR Part: 
CFR Title: 

Content:
rol, storage, or conveyance structures such as canals, dikes, levees, etc. vii. Locations of surface and ground water users viii. Maps of soil types and subsurface characteristics identifying aquifers and ground water pathways ix. Detailed topographic and bathymetric maps of the site area x. Aerial photographs xii. Geologic maps B. Temporal data i. Observed streamflow records near the site, both upstream and downstream ii. Observed streamflow records in neighboring basins if only limited streamflow data are available for the basin where the site is located iii. Observed meteorological (air temperature, dewpoint, and rainfall) records near the site iv. Historical records of hurricanes, surges, seiches, and tsunamis v. Any relevant pre-historical records, e.g., paleo-tsunami evidence vi. Lake-water surface elevation and downstream discharge, if applicable vii. Historical records of sedimentation, littoral drift, hillslope failure, ice jams, ice-sheet formation on water bodies, channel diversions, etc., where applicable 5. Alternate Conceptual Models: The staff reviews a variety of alternate conceptual models of the site, each based on the geological and hydrological characteristics of the site. These conceptual models need to be envisioned as part of the complete understanding of the surface and subsurface water movement. The most adverse of these conceptual models, in terms of contaminant movement, should be used to derive a conservative bounding estimate of travel time. Consideration should be given to surface and ground water pathways, preferential flow in the subsurface, chemistry of the subsurface media, and other relevant physiographic conditions to evaluate the most severe impact on people and the environment. 6. Consideration of Other Site-Related Evaluation Criteria: The staff reviews the applicant’s assertions regarding the potential effects of site-related proximity and of seismic and non-seismic information as they relate to the hydrologic description of