Document: NRC Regulatory Guide
Document ID: 2654196f-c25a-40d1-8edc-e828353b6377
Document Type: regulatory_guide
Title: Standard Format and Content of Environmental Reports for Near-Surface Disposal of Radioactive Waste + HISTORY - HISTORY 04/1982 – Draft WM 013-4
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1218/ML12187A698.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.18
CFR Part: 
CFR Title: 

Content:
f collection. The surface and subsurface geohydrology and time-history characteristics of the site should be described in detail. Lithographic and geologic maps extending radially 8 km (5 mi) from the site boundary should be provided to show hydrologic, geologic, and stratigraphic characteristics of the site. Where applicable, reference the data provided in the license application in order to avoid unnecessary duplication. 2.4.1 Ground Water Describe the hydrology of the region that affects the local ground-water aquifers, formations, sources, and sinks. Describe the recharge potential of the immediate facility area. Sufficient site-specific data should be provided for the evaluation of the effects of construction and operation of the facility on established ground-water tables and usage. *A regulatory guide on site suitability and characterization is under development and, when issued, should provide additional guidance in this area. 7 Descriptions of the major aquifers in the area should include piezometric contour maps, hydraulic gradients, horizontal and vertical permeabilities for representative geologic features, total and effective porosities, bulk densities estimates, storage coefficients, dispersion and distribution (sorption) coeffi- cients, descriptions of pertinent geologic formations and soil types, including formation depth throughout the site and to the nearest downgradient well or water body, chemical and radiological properties (as required by EPA Water Quality Standards or by any existing State regulation), and time histories of ground-water fluctuations. In addition, the baseline water quality of bodies of water adjacent to the site should be provided. Provide data concerning any drawdown of ground water that may be caused by withdrawals from neighboring major industrial, agricultural, or municipal wells. 2.4.2 Surface Water Describe the location, size, shape, and other hydrologic characteristics of water bodies in the environs of the site.