00017964 - Exhibit 7-2_Acceptable Quality Levels~4.pdf
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- Solicitation number
- S-73000-00017964
- Issued by
- Jackson County, Oregon
About this file
This document is an Acceptable Quality Levels exhibit for the Oregon Department of Transportation's Interstate 5 MP 38-39 Clear Zone Tree Removal project. The exhibit establishes quality standards and inspection criteria for tree removal and vegetation management work along the specified highway corridor. The project involves clearing trees and limbs to improve sight distance through trimming and removing brush, small trees, and marked trees, including work in clear zones for signage and along highway areas. Quality acceptance is measured against specific defect thresholds across multiple categories, with zero allowable major defects for most work elements and varying minor defect tolerances per mile of roadway treated.
The acceptable quality levels define performance standards across eight primary defect categories: tree damage (0 major defects allowed, 10 minor defects per mile), horizontal clearance (0 major, 5 minor per mile), vertical clearance (0 major, 5 minor per mile), height above ground surface (0 major, 5 minor per mile), drainage (0 major, 2 minor per mile), oversized material (0 allowable for both major and minor defects), work area management concentrations (0 major and minor defects), and safety plan compliance (0 major and minor defects with work suspension as the required action for non-compliance). Required actions include removal, treatment, or rework of deficient areas, with rework triggered when minor defect thresholds are exceeded. The document establishes that all major defect categories require immediate corrective action and that failure to follow approved safety plans results in work suspension until compliance is achieved.
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Text version
Acceptable Quality Levels
Description Major Minor Allowable Defects Required Action
Defect Defect Major Minor Major Minor Tree damage Damage to more than
30% of the tree bole Damage to 30% or less of the tree bole
0 per mile 10 per mile Remove or Treat Remove or Treat
Horizontal Clearance More than 20% not cleared to limits
20% or less not cleared to limits
0 5 per mile Rework Rework if greater than 5 minor defects *
Vertical Clearance More than 20% not cleared to limits
20% or less not cleared to limits
0 5 per mile Rework Rework if greater than 5 minor defects *
Height above ground surface
More than 20% not cleared to limits
20% or less not cleared to limits
0 5 per mile Rework Rework if greater than 5 minor defects *
Drainage Impeded flow or water diverted out of drainage structures.
20% or less impeded, but water will stay in the channel.
0 2 per mile Rework Rework if greater than 2 minor defects *
Oversized Material Material greater than 3" diameter remaining on the road surface
Material 1” – 3” in diameter remaining on the road surface
0 0 Rework Rework
Material greater than 3" diameter and 36" in length remaining on the roadway drainages or has the potential to move into drainages.
Material 1” - 3" in diameter and greater 36" in length remaining on the roadway slopes and drainages or has the potential to move into drainages.
0 0 Rework Rework if greater than 0 minor defects *
Description Major Minor Allowable Defects Required Action Defect Defect Major Minor Major Minor
Concentrations
Work Area Management
Any concentrations that affect sight distance
N/A 0 0 Rework N/A
Not following approved safety plan which may include signs, flaggers, and other temporary traffic control measures
Not following approved safety plan which may include signs, flaggers, and other temporary traffic control measures
0 0 Suspend work until in compliance
Suspend work until in compliance
File details come from the government source that posted it. Updated .