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United States Department of Agriculture
Natural Resources Conservation Service

2118 W. Park Court, Champaign, IL 61821
Phone: 217/353-6600 Fax: 217/353-6676 Website:

DATE: March 25, 2010

SUBJECT:  National Engineering Handbook Part 645, Engineering Technical Materials

Purpose:  To distribute revised and new IL-ENG standard drawings

Expiration Date:  Upon receipt.

Explanation: This notice distributes 121 revised and 15 new standard engineering drawings. Major highlights of this drawing release include:

  • Addition of perimeter drain details on concrete tank facilities
  • Addition of reinforcement bar details on settling basins
  • Standardization of overlap notes on drawings containing geotextile
  • Standardization of expansion joint details on concrete structures
  • Standardization of base course materials for concrete structures
  • Winter feeding station updates (downspout protection, removal of water stops)

A summary of all updates is included on the attached distribution list.

The Illinois NRCS engineering website will be revised to reflect the updated drawings: Copies of the drawings are not included as attachments to this distribution, due to file size. The drawings may be downloaded from the website as needed.

Filing Instructions:

All holders of Illinois Engineering Drawing binders should:

  1. Replace Numerical Index dated 1/15/2010 with the new Numerical Index (attached), dated 3/1/2010.
  2. Replace Category Index dated 1/15/2010 with the new Category Index (attached), dated 3/1/2010.
  3. Follow instructions on attached distribution listing of new drawings, filing in IL-ENG Drawing binder.

Any questions regarding this submittal should be directed to the Area Engineer.

Ruth Book Signature
State Conservation Engineer

DIST: Partners
          All NRCS Employees
          All SWCD Employees


This attachment requires  Adobe Acrobat Reader to view: 
EFH_Notice_46Signed.pdf  [PDF, 59kb]

Category Drawing Index
March 2010_CatDwgIndex.pdf (PDF, 47kb)

Drawing Distribution List
March2010_DwgDistribList.pdf (PDF, 33kb)

Numerical Drawing Index
March2010_NumericalDwgIndex.pdf (PDF, 41kb)

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