RULES TO BE ENACTED TO THE EDUCATION AND CERTIFICATION REQUIREMENTS FOR PERSONS INVOLVED WITH LAND DISTURBANCE ACTIVITIES Stakeholder Advisory Board November 2004

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ELEMENTS OF AN EFFECTIVE SEDIMENT CONTROL
PLAN PLANNING APPROACH
Level II Introduction to Design Education and
Certification for Persons Involved in Land
Disturbing Activities
Issued May 2009
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TOOLS TO USE

• Site Survey
• County Topo Maps
• USGS Survey
• Soil Survey
• Soils Investigation
• Wetlands Maps
• Phase I Investigation
• Recorded Plats
• FEMA Flood Maps
• Blue Book GA Stormwater Manual
• Manual for Erosion and Sediment Control in GA

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http//www.gaswcc.org/docs.htm
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WHAT CAN BE DETERMINED FROM SOIL TYPES

• Available water capacity
• Depth to bed rock
• Depth to water table
• Drainage
• Erodibility
• Fertility
• Infiltration
• Percolation rate
• Permeability
• Slope
• Shrink-swell potential
• Susceptibility to flooding

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PROJECT CONSTRUCTION ISSUES

• Project Location
• Required Predesign Site Visit
• Phasing
• Project Size
• Project Type
• Project Schedule

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REQUIRED PREDESIGN SITE VISIT

• APPROVED RULE
• Plan preparer/design professional must certify
  that a site visit by the plan preparer (or their
  designee) has been conducted prior to creation of
  the plan

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SITE VISIT CERTIFICATION ON PLANS

• I certify under penalty of law that this plan
  was prepared after a site visit to the locations
  described herein by myself or my authorized
  agent, under my direct supervision.
• ____________________
• Design Professional
  Date

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SITE VISIT CHECKLIST

• THINGS TO LOOK FOR
• Existing vegetation specimen trees, etc.
• State waters potential
• US waters potential
• Flood plain
• Springs
• Soils conditions
• Topography
• Basin delineation/visual evaluation
• Offsite drainage
• Offsite/downstream conditions
• Wetlands
• Archaeological

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STATE WATERS

• Any and all rivers, streams, creeks, branches,
  lakes, reservoirs, ponds, drainage systems,
  springs, wells and other bodies of surface or
  subsurface waters, natural or artificial, lying
  within or forming a part of the boundaries of the
  state which are not entirely confined and
  retained completely upon the property of a single
  individual, partnership or corporation
• (Ref. GESA)

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NOT JUST STATE WATERS U.S. WATERS TOO.

• 404 permits may be required (U.S. Clean Water
  Act)
• Feds noted that much confusion may exist related
  to utility and road construction
• Reference EPA letter (appendix)

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STATE/US WATERS ISSUES

• While there may be some activities which are
  exempt from state regulation, the USACE
  recommends a developer (permittee) contact them
  if any amount of fill material may be placed in a
  water of the U.S.

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U.S. WATERS GUIDELINE

• Projects impacting more than a 0.10 acre of
  wetlands or 300 feet of stream will likely
  require an individual Department of the Army
  Permit.

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Minimum Requirements

• Stripping of vegetation, regrading and other
  development activities shall be conducted in such
  a manner so as to minimize erosion
• Cut and fill operations must be kept to a minimum
• Development plans must conform to topography and
  soil type, so as to create the lowest practicable
  erosion potential
• Whenever feasible, natural vegetation shall be
  retained, protected and supplemented
• (Ref. O.C.G.A. 12-7-6)

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Minimum Requirements

• Disturbed soil shall be stabilized as quickly as
  practicable
• Temporary vegetation or mulching shall be
  employed to protect exposed critical areas during
  development
• Permanent vegetation and structural erosion
  control measures must be installed as soon as
  practicable.
• Sediment in runoff water must be trapped by the
  use of debris basins, sediment basins, silt traps
  or similar measures until the disturbed area is
  stabilized
• Adequate provisions must be provided to minimize
  damage from surface water to the cut face of
  excavations or the sloping surfaces of fills
• (Ref. O.C.G.A. 12-7-6)

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Minimum Requirements

• Cuts and fills may not endanger adjoining
  property
• Fills may not encroach upon natural watercourses
  or constructed channels in a manner so as to
  adversely affect other property owners
• Grading equipment must cross flowing streams by
  the means of bridges or culverts, except when
  such methods are not feasible, provided, in any
  case, that such crossings must be kept to a
  minimum
• (Ref. O.C.G.A. 12-7-6)

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Minimum Requirements

• The disturbed area and duration of exposure to
  erosive elements shall be kept to a practicable
  minimum.
• Land disturbing activity plans for erosion and
  sedimentation control shall include provisions
  for control or treatment of any source of
  sediments and adequate sedimentation control
  facilities to retain sediments on site or
  preclude sedimentation of adjacent waters.
• (Ref. O.C.G.A. 12-7-6)

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PLAN CONCEPTS

• Adapt the plan to resources available
• When possible, fit the project into the existing
  terrain
• Recommendations must be cost-effective
• The plan must be flexible
• Maintain open communication with developer,
  contractors and local issuing authority

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PLAN CONCEPTS

• Notes and instructions must be clear and simple
• Timing and scheduling are very important
• Establish an effective maintenance program
• Identify critical offsite areas
• Monitor impacts

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CONSTRUCTION SEQUENCING

• Plan sequence with contractor.
• Advise inspector/LIA of sequence at
  pre-construction meeting.
• Evaluate sequence during implementation.
• Make sequence revisions.
• Provide LIA/GA EPD/contractor documentation of
  revised design.

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THREE PHASE CONSTRUCTION

• CLEARING PHASE (clearing grubbing)
• GRADING PHASE (grading temporary vegetation)
• FINAL PHASE (stormwater management permanent
  vegetation)

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• PERHAPS THE MOST IMPORTANT STEP IS..
• TO UNDERSTAND HOW A SITE
• ACCOMODATES RUNOFF IN PRE-
• DURING AND POST-CONSTRUCTION
• CONDITIONS.

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