NRCS FOTG Update: Notice WI-78

WISCONSIN FIELD OFFICE TECHNICAL GUIDE

450-11-TECHNICAL GUIDE

FOTG NOTICE WI-78

SUBJECT:  WISCONSIN FIELD OFFICE TECHNICAL GUIDE

Purpose.  Revisions to Wisconsin Conservation Practice Standards and Specifications

Explanation of Changes.

Section IV: Conservation Practice Standards and Specifications:

Access Control (Code 472) – Minor updates to bring the WI standard current.

 

Lighting System Improvement (Code 670) – Minor updates to bring the WI standard current.

 

Irrigation System, Microirrigation (Code 441) – Minor updates to bring the WI standard current.

 

Residue and Tillage Management, No Till (Code 329) – Minor updates to bring the WI standard current.

 

Roofs and Covers (Code 367) – The definition for the Roofs and Covers practice added agrichemical handling facilities to the waste management facilities specified. Criteria was added to include treated wood products and the type of associated fasteners and a table for geomembrane materials specified by cover purpose. Criteria was also added for appurtenant equipment associated with a cover over liquid manure storage facilities for the safe collection, conveyance, treatment or utilization of biogases.

 

Shallow Water Development and Management (Code 646) – Minor updates to bring the WI standard current.

 

Sprinkler System (Code 442) – Added “in absence of manufacturer’s recommendations for pressure regulator operation, ensure line pressure upstream of regulators is at least 5 psi above rated regulator pressure”. There are also some minor editing changes.

 

Surface Drain, Field Ditch (Code 607) – The agency changed the definition for clarity, along with a purpose and criteria added to allow use of this practice to collect irrigation tailwater for reuse.

 

Surface Drain, Main or Lateral (Code 608) – The agency removed the reference to the ambiguous phrase ‘water management system’ in the purpose to improve clarity. Criteria was added allowing the use of this practice as a component to collect irrigation tailwater, for use in a Tailwater Recovery System, (Code 447) along with a reference to the two-stage channel design process in NRCS National Engineering Handbook, Part 654.1005 in areas where increased channel stability is required.

 

Trails and Walkways (Code 575) – Minor updates to bring the WI standard current.

 

Concrete (WCS 4) – Embedded water stop material options and mixing material tolerance were added. The compression strength was increased to 4500 psi which matches the minimum cement content required. Several minor edits and clarifying additions were made.

 

The following revisions to the Wisconsin FOTG have been posted on the Wisconsin e-FOTG website:

Remove the following outdated Standards and Specifications from any printed copies of the WI FOTG:

  • Index
  • Access Control (Code 472)
  • Irrigation System, Microirrigation (Code 441)
  • Lighting System Improvement (Code 670)
  • Residue and Tillage Management, No Till (Code 329)
  • Roofs and Cover (Code 367)
  • Shallow Water Development and Management (Code 646)
  • Sprinkler System (Code 442)
  • Surface Drain, Field Ditch (Code 607)
  • Surface Drain, Main or Lateral (Code 608)
  • Trails and Walkways (Code 575)
  • Concrete (WCS 4)

 

Add the following Standards and Specifications to any printed copies of the WI FOTG:

  • Index
  • Access Control (Code 472)
  • Irrigation System, Microirrigation (Code 441)
  • Lighting System Improvement (Code 670)
  • Residue and Tillage Management, No Till (Code 329)
  • Roofs and Cover (Code 367)
  • Shallow Water Development and Management (Code 646)
  • Sprinkler System (Code 442)
  • Surface Drain, Field Ditch (Code 607)
  • Surface Drain, Main or Lateral (Code 608)
  • Trails and Walkways (Code 575)
  • Concrete (WCS 4)

 

A link to the Wisconsin FOTG is located on the Wisconsin NRCS website at:

http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/technical/fotg/

 

/S/

JIMMY BRAMBLETT

State Conservationist

 

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