Construction Storm Water Challenges at Ingalls Shipbuilding March - - PowerPoint PPT Presentation

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Construction Storm Water Challenges at Ingalls Shipbuilding March - - PowerPoint PPT Presentation

Sep 30, 2023 331 likes •667 views

Construction Storm Water Challenges at Ingalls Shipbuilding March 14, 2019 Chris Griffith Environmental Engineer 2 Ingalls Shipbuilding Building four classes of ships simultaneously 11 ships under construction Sole builder of the

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Construction Storm Water

Challenges at Ingalls Shipbuilding March 14, 2019

Chris Griffith Environmental Engineer

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Ingalls Shipbuilding

  • Building four classes of ships simultaneously— 11 ships under

construction

  • Sole builder of the San Antonio-class (LPD 17) amphibious transport docks

and the America-class (LHA 6) amphibious assault ships

  • One of two builders of DDG 51 Arleigh Burke-class destroyers
  • Sole builder of the Legend-class National Security Cutters for the U.S.

Coast Guard

  • Largest private employer in Mississippi – approximately 11,600 employees

DDG 51 Surface Combatants LPD 17 Class Amphibious Transport USCG National Security Cutter LHA 6 Amphibious Assault Ship

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3

Personal Perspective

Regulator Private Sector

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Construction Sites

  • East Bank

– 115 acres – Production began 1938 – Halted by Hurricane Katrina 2005 – “Revitalization” plan

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East Bank “Revitalization”

  • Challenges

– Distance and no-drive times – Visibility

  • Daily operations
  • Public

– Scale

  • 54 acres
  • 8 contracts
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West Bank Projects

  • CSA III

– Overview

  • Increase production
  • Improve storm water quality

– Advantages

  • Visibility
  • Public roads
  • Distance to receiving waters
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West Bank Projects

  • North East/West Track

– Overview

  • Small construction
  • Increase portal crane access
  • New translation rails

– Challenges

  • No exposed soils
  • Saw cutting
  • Dewatering
  • Hazards
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Staying in Compliance

  • Obtain coverage (before construction)

≥ 5 acres Submittal Required

Large

< 5 acres Submit Upon Request

Small

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Staying in Compliance

  • Know the permit

– Permit vs. SWPPP

  • Fence maintenance

–Permit: 1/3 to 1/2 –SWPPP: 1/3

  • Sediment basins
  • Inspection frequency

–At least weekly

  • 4/month

–Tuesdays

– Dewatering – “Steep slopes” – Vegetative barriers

Ceds.org

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Staying in Compliance

  • Know SWPPP

– Often written by engineering firm – 1st item requested by inspector – Contractor copy

  • Subs aware of language

– Specific locations:

  • Chute washout
  • Maintenance
  • Fueling
  • Containment
  • Material storage
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Staying in Compliance

  • Inspection logs

– NOI forms contain inspection log – Use your own

  • Greater detail
  • Weather
  • Be honest

– Check contractor logs – Get dirty

Imgflip.com

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“Sanitary Waste”

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“Steep Slopes”

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Chute Washout

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Chute Washout

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Chute Washout

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Saw Cutting

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Dewatering

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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East Bank

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Summary

Coverage Permit SWPPP Inspections

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Ingalls Shipbuilding

Questions?

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