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Hazards and Disasters. “That Effect Sanitation Districts”. Khai Luu EMER 542 California State University – Long Beach. Public Version. Sanitation Districts. Mission Statement : The Sanitation Districts protect public health and the environment

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hazards and disasters

Hazards and Disasters

“That Effect Sanitation Districts”

Khai Luu

EMER 542

California State University – Long Beach

sanitation districts

Public Version

Sanitation Districts

Mission Statement: The Sanitation Districts

protect public health and the environment

through innovative and cost-effective wastewater

and solid waste management, and in doing so

convert waste into resources such as reclaimed

water, energy, and recycled materials.

slide3

Public Version

Area of Operation

7 Landfills

11 WRPs

54 Pumping Plants

4 Recycle Centers

1,400 miles of Trunk Sewer Pipe

5 Trash to Energy

hazards

Public Version

Hazards

Definition: something that is potentially dangerous or

harmful, often the root cause of an unwanted outcome

(NIMS, 1990)

climate change, fog, hurricane, snow, temperature extreme,

thunderstorm, tornado, wind, wild land fire, drought, flood,

ice storm, slope failures, tsunami, volcano, earthquake

financial, crime, arson, civil disorder, terrorism, industrial,

structural, hazardous materials, vehicular, aviation, railroad,

war

overhead utilities, lifting equipment, underground utilities,

electrical,excavations, noise, hand, manual lifting, ladders,

scaffolds, slips-trips-falls, heat stress, site, barricades,

confined space, lock out / tag out

disasters

Public Version

Disasters

Definition: an occurrence that has resulted in property

damage, deaths, and/or injuries to the community;

(FEMA, 2009)

climate change, fog, hurricane, snow, temperature extreme,

thunderstorm, tornado, wind, wild land fire, drought, flood,

ice storm, slope failures, tsunami, volcano, earthquake

crime, arson, civil disorder, terrorism, war, industrial,

hazardous materials, vehicular, aviation, railroad,structural

Stafford Act - Emergency Declaration or

Major Disaster Declaration

top 3 hazards that effect sanitation districts

Public Version

Top 3 Hazards That Effect Sanitation Districts

1. Man-made Hazard – Hazardous Materials

2. Man-made Hazard – Industrial

3. Natural Hazard – Wildfires

effected facilities wastewater reclamation plants

Public Version

Effected Facilities – Wastewater Reclamation Plants
  • 2-WRPs are designated “Medium-Hazard” for its aqueous ammonia handling regulated under CalARP Program Level 2
  • 2-WRPs are designated “High-Hazard” for its chlorine and sulfur dioxide handling regulated under CalARP Program Level 3
disaster worst case scenario

Public Version

Disaster – Worst Case Scenario

Aqueous ammonia

  • 200 ppm (toxic endpoint), extend distance of 0.08 miles
  • Effect limited to on-site personnel

Anhydrous chlorine & sulfur dioxide

  • 3 ppm (toxic endpoint), extend distance of 2.7 miles
  • Effect schools, residences, hospitals, day-care, parks, 2-major highways, several hundred thousand people
disaster worst case scenario1

Public Version

Disaster - Worst Case Scenario

WRP B: Aqueous ammonia

  • 200 ppm (toxic endpoint), extend distance of 0.07 miles
  • Effect limited to on-site personnel

WRP B: Anhydrous chlorine & sulfur dioxide

  • 3 ppm (toxic endpoint), extend distance of 2.7 miles
  • Effect schools, residences, hospitals, day-care, parks, 2-major highways, 280,600 people
effected facilities

Public Version

Effected Facilities
  • 11-Wastewater Reclamation Plants
  • 54 pumping plants
  • Thousands of Man-holes
  • 1,400 miles of Districts sewer pipe
disaster worst case scenario2

Public Version

Disaster – Worst Case Scenario

1. Manhattan Beach Incident (past incident, 2006):

  • Several pumping plants stop pumping wastewater
  • If not bypassed or repaired, within 3-hours, untreated wastewater starts to overflow from the failed pumping plants and from the man-holes
  • Wastewater flows into streams, collects on residential surface streets, backs-up residences nearby
  • Within “hot-zone” Public Health “Non-Use” to mitigate wastewater exposure.
  • Millions of dollars for wastewater remediation, lawsuits, fines
effected facilities1

Public Version

Effected Facilities
  • 7-Wastewater Reclamation Plants and 3-Landfills are located in or near wildland areas and are threatened by wildfire
  • A fire at a WRP or Landfill has potential to cause secondary (combustion of hazardous materials) and tertiary hazards (injuring people, emergency responders, and environment)
disaster worst case scenario3

Public Version

Disaster – Worst Case Scenario

1. WRP is over run by wildfire

  • Wildfire flames effect back-up power generation, secondary treatment fails, wastewater is not disinfected and untreated wastewater discharged
  • Wildfire flames explode hazardous materials onsite releasing toxic fumes causing evacuation

2. Landfill is over run by wildfire

  • Wildfire flames burn sub-surface debris and damage landfill membrane – releasing toxic liquids into groundwater and nearby streams