Using UCS as a surrogate performance standard at the NCSU NPL site


Journal Article

Treated hazardous material at the North Carolina State University (NCSU) Lot 86 National Priorities List (NPL) Site was evaluated using unconfined compressive strength (UCS) as a surrogate performance standard for the toxicity characteristic leaching procedure (TCLP). During a preconstruction treatability study, UCS test results were related to the TCLP performance standards as stipulated in the record of decision. During construction, 113 UCS samples were obtained and test results indicated that over 8,410 m3 (11,000 yd3) of pre-RCRA (Resource Conservation and Recovery Act) chemical waste generated from the University's educational and research laboratories had been successfully stabilized. Using a crane-mounted mixing unit for a portion of the stabilization operations, and a trackhoe unit for the remainder of the construction, 2.03 Gg (2,240 t) of cement and 2.81 ML (743,000 gal.) of water were mixed with impacted soil and waste material resulting in a 3 m (10ft) thick encapsulated monolith half the size of a football field. © 2006 ASCE.

Full Text

Duke Authors

Cited Authors

  • Schaad, DE; Halley, JM; Wilson, SA

Published Date

  • October 1, 2006

Published In

Volume / Issue

  • 132 / 10

Start / End Page

  • 1355 - 1365

International Standard Serial Number (ISSN)

  • 0733-9372

Digital Object Identifier (DOI)

  • 10.1061/(ASCE)0733-9372(2006)132:10(1355)

Citation Source

  • Scopus