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National Engineering Manual - Illinois Supplement AMENDMENT IL31 (Parts 501 [Sub

Date: September 12, 2011

AMENDMENT IL31 (Parts 501 [Subpart A] & 503 [Subparts B and E] )

SUBJECT: ENG – Updates to Illinois Supplements to the National Engineering Manual

Purpose: To announce updated supplements to the NEM on job approval authority and Non-NRCS engineering.

Effective Date: This supplement is effective upon receipt.

Explanation: NEM Supplement IL31 updates Illinois policy for engineering job approval authority, located in Part 501. Language was added specifying how job approval authority is obtained for state office employees and employees that work in more than one area. The Illinois Engineering Job Approval Authority form (IL-ENG-35) was also updated.

NEM Supplement IL31 also clarifies Illinois policy on non-NRCS engineering in Part 505.

The Illinois NRCS engineering website will be updated to include the new Illinois supplement at These supplements will also be posted to the NRCS eDirectives website at

Supplement IL31 cancels and replaces the part of Amendment IL30 dated December 2010 related to Part 505, and Amendment IL29 dated May 2010.

Filing Instructions

If a hardcopy of Illinois supplements to NEM is maintained, holders should:

  • discard existing pages IL501-3(1) through IL 501-3(3);
  • discard existing pages IL501-12(1) through IL 501-12(3);
  • discard existing pages IL 505-1 through IL 505-16;
  • print the attached amendments on green paper;
  • insert page IL501-A.1 through IL501-A.7 in front of Part 501 of the NEM;
  • insert pages IL505-B.1 through IL505-B.5 and IL505-E.1 through IL505-E.11 in front of Part 505 of the NEM.

Ivan Dozier signature

Ivan Dozier
State Conservationist

DIST: NRCS Employees
          District Employees


The following document is available in Adobe Acrobat format.
Adobe Acrobat Icon IL501subpartA-Authorization.pdf (PDF, 43kb)

Adobe Acrobat Icon IL31Part 505-Non-NRCS Engineering Services.pdf (PDF, 51kb)