Document: NUREG-1555
Document ID: a61e4980-ac86-4217-a0a1-30f6cb00c240
Document Type: esrp
Title: HYDROLOGIC ALTERATIONS
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 4
Section ID: 4.2.1
CFR Part: 
CFR Title: 

Content:
the alterations by associating the previously identified activities with changes in (1) water quantity and availability, (2) hydrological geometries (especially within the floodplain or wetland), flow and circulation patterns, and mixing processes, and (3) erosion, deposition, and sediment transport. The reviewer should take the following steps: (1) Analyze the water quantity and availability by analyzing the construction activities that can alter the quantities of water physically available in nearby hydrologic systems and determine the alterations. (a) Consider all water used during construction: ` the sources of the water ` points of discharge ` all water diversions that change the quantities of water in various parts of water systems (e.g., construction dewatering). (b) For the hydrologic systems where alterations in water quantities due to construction have been identified, determine the physical effects (e.g., altered well yields, water levels relative to intake pipes) likely to have impacts on other water users. (2) Analyze the hydrologic geometry, flow and circulation patterns, and mixing processes by evaluating the construction activities that can alter hydrologic geometries, flow and circulation patterns, and mixing processes, and determining the alterations. (a) Consider all construction activities within water bodies and diversions of water during construction. (b) Give particular attention to construction and related activities located in the floodplains or wetlands. (c) Identify any Federal, State, regional, local, or Native American tribal floodplain or wetland protection standards and analyze proposed project construction and construction-related activities with respect to these standards. (3) Analyze the erosion, deposition, and sediment transport by evaluating the construction activities that can alter erosional, depositional, and sediment transport characteristics and determine the alterations. (a) Consider all construction activities within water