Document: NRC Regulatory Guide
Document ID: 01fb3132-b05a-41a0-ab81-466a6fb6f4d3
Document Type: regulatory_guide
Title: Preparation of Environmental Reports for Nuclear Power Plant License Renewal Applications (Rev. 1)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0916/ML091620409.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.2S1
CFR Part: 
CFR Title: 

Content:
tions and refurbishment activities. This section should also identify prime farmland soils on or in the vicinity of the plant site. 3.5 Hydrology Surface Water The ER should describe the surface water resources at or near the site, as well as the river and stream flow, lake and reservoir volume, water level measurements, intake and discharge (outfall) specifications and operating parameters, and onsite ponds or other impoundment descriptions. The ER should also include local, State, and Federal permit information for enforcement of water use, NPDES- regulated discharges, and storm water runoff controls. The discussion of surface water resources should include surface water quality and both ambient conditions and monitoring results from site studies. Groundwater The ER should describe the site’s groundwater hydrology and identify the hydrostratigraphic units underlying the site. This discussion should link the previously described site geology with groundwater conditions. The ER should identify the number and location of onsite water supply wells and monitoring wells on an accompanying map. The ER should also describe a dewatering system, if appropriate, and include it on a site map, if practicable. 3.6 Ecology This section identifies information necessary for an NRC staff reviewer to describe the ecological resources potentially affected by current and future nuclear plant operations. Ecological resources include members and attributes of aquatic, terrestrial, riparian, and wetland plant and animal communities. Wetlands and riparian habitats are the interface between aquatic and terrestrial habitats and as defined by EPA in 1993 as follows: [Wetlands are] those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar