Construction Site Erosion and Sediment Controls

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Construction Site Erosion and Sediment Controls
Section 6. Maintenance and Inspection
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Maintenance

• Two categories of maintenance activities
• Repair and replacement of erosion control devices
• Removal and disposal of sediment from the devices

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Maintenance Trigger Points

• Remove sediment from basins and ditch checks when
  1/2 full
• Remove sediment from silt fence when 1/3 full
• Other trigger points may be specified by the
  Engineer (see Section 621.03 (l) of the
  Specifications)

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Maintenance Trigger Points
Sediment is too high behind this baled straw
ditch check maintenance is needed to prevent
water from continuing to flow around check
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Sediment Removal and Disposal

• Sediment removed shall be deposited and
  stabilized as described in Sections 110 and 201
  or as directed by the Engineer
• In some cases sediment controls may be allowed to
  silt in and never be removed or cleaned out

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Winterizing

• A pre-winterizing meeting will be scheduled with
  the Contractor to determine what is needed before
  shutting down for the winter
• Plans should be made to maintain erosion and
  sediment control while work is shut down

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Inspection Duties

• Be familiar with Plans and Specifications
• Be familiar with SWPPP
• Check SWPPP for errors and problems prior to
  start of construction
• Discuss details of SWPPP with Contractors
  personnel at Pre-construction Conference

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Inspection Duties

• Ensure that all BMPs are installed in accordance
  with the Plans and Specifications
• Ensure compliance with Section 110 of
  Specifications
• Ensure that wash water from concrete trucks is
  disposed of properly
• Conduct SWPPP inspections and document status of
  BMPs as well as any instructions to Contractor

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SWPPP Inspection Reports

• Completed a minimum of every 7 days and within 24
  hours of any ½-inch rainfall
• Copy should be sent to Contractor as soon as
  possible for corrective actions
• Document Contractor compliance in job diary
• Once the RE has received a copy of the NOT,
  reports may cease for the project

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Construction Wastes

• Section 110.07 of the Specifications describes
  the Contractors responsibilities for pollution
  prevention
• Inspect Contractors materials, stockpiles, and
  other pollutant sources on the R/W and make sure
  they are properly safeguarded
• Inspect Contractors housekeeping procedures

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SWPPP Inspection Reports

• Critical points for inspection
• all disturbed areas of the site,
• erosion and sediment BMPs,
• vehicle entrances and exits, and,
• material storage areas

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SWPPP Inspection Reports
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SWPPP Inspection Reports
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Documentation Requirements

• NOI must be filed with ADEQ, the Central Office
  will include the NOI in the Contract
• Copy of all Change Orders regarding the SWPPP
  must be on file
• Copy of the Pre-construction Conference minutes
  regarding discussions of the SWPPP must be on file

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Documentation Requirements

• Public Notice must be posted on bulletin board
• Copy of all documentation regarding SWPPP should
  be kept in the REs Office and shall be readily
  available to all State and Federal inspectors
• When deficiencies are noted in the SWPPP report,
  a copy must be given to the Contractor

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Final Stabilization

• Final stabilization as defined by Federal
  regulation is achieved when a uniform perennial
  vegetative cover of at least 70 of the native
  background cover for the area has been
  established
• Notice of Termination (NOT) is submitted once
  final stabilization is established

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Questions?