ML21271A200

License Amendment Request (LAR) 21-01, Chapter 3 14 Backfill Attachment Final CAC 2

ML21271A200
Person / Time
Site:	Fort Calhoun
Issue date:	08/03/2021
From:	Omaha Public Power District
To:	Office of Nuclear Reactor Regulation
Shared Package
ML21271A178	List: LIC-20-0013, License Amendment Request (LAR) 21-01, Response Re Revised Post-Shutdown Decommissioning Activities Report, Chapter 8 2 Updated Environmental Report, File No. 127690-003 (LIC-20-0013, ML 20202A654) LIC-21-0005, License Amendment Request (LAR) 21-01, Chapter 8, 15, Omaha Public Power District, Avian Protection Plan CAC ML21271A143 ML21271A144 ML21271A145 ML21271A148 ML21271A149 ML21271A150 ML21271A151 ML21271A152 ML21271A153 ML21271A172 ML21271A173 ML21271A174 ML21271A175 ML21271A176 ML21271A177 ML21271A180 ML21271A182 ML21271A183 ML21271A184 ML21271A185 ML21271A192 ML21271A193 ML21271A194 ML21271A196 ML21271A197 ML21271A198 ML21271A199 ML21271A200 ML21271A206 ML21271A207 ML21271A208 ML21271A209 ML21271A210 ML21271A211 ML21271A212 ML21271A213 ML21271A214 ML21271A215 ML21271A219 ML21271A258 ML21271A259 ML21271A260 ML21271A261 ML21271A262 ML21271A265 ML21271A266 ML21271A267 ML21271A268 ... further results
References
LIC-21-0005
Download: ML21271A200 (1)

Text

Attachment 01 Page1of1

Fort Calhoun Station Backfill Requirements

1. General Following the demolition of Buildings and Structures to three (3) feet below grade and the removal of underground utilities, the Contractor shall perform backfill activities to bring the site back to elevation 1004. The Customer is responsible for the procurement of the backfill material, however it is the Contractors responsibility to coordinate the transportation and proper placement of the fill per the guidelines detailed in this attachment. Backfill activities will be coordinated with Final Status Surveys (FSS) performed by the Customer that are required prior to backfill activities commencing.

2. Backfill Material Source Customer has identified a borrow source for backfill material. The contractor will utilize the backfill material identified by Customer.

Contractor will excavate and transport the previously identified backfill material from the stock pile location or borrow source to Fort Calhoun Station (FCS) Protected Area (PA) for placement in the structures to remain or excavations.

3. Backfill/ Fill and Compaction Requirements Fill material shall contain no rocks or stones larger than three (3) inches and shall be free of frozen lumps, organic matter, trash, snow, ice contamination or other deleterious material.

Contractor will place the earthen materials in lifts not to exceed twelve (12) inches of loose material. Fill material shall be uniformly compacted in accordance with the following density and moisture content requirements.

Fill shall be compacted to at least 85% of the maximum Modified Proctor in accordance with ASTM D1557, or 90% of the maximum Standard Proctor density in accordance with ASTM D698.

The moisture content of the material being placed shall be compacted within plus or minus 3% of the optimum moisture content in accordance with the applicable ASTM D1557 or ASTM D698 standards.