hydrogen sulfide ambient air monitoring hummingbird court marco island fl l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Hydrogen Sulfide Ambient Air Monitoring Hummingbird Court, Marco Island, FL PowerPoint Presentation
Download Presentation
Hydrogen Sulfide Ambient Air Monitoring Hummingbird Court, Marco Island, FL

Loading in 2 Seconds...

play fullscreen
1 / 17

Hydrogen Sulfide Ambient Air Monitoring Hummingbird Court, Marco Island, FL - PowerPoint PPT Presentation


  • 1084 Views
  • Uploaded on

Hydrogen Sulfide Ambient Air Monitoring Hummingbird Court, Marco Island, FL Presented at the City of Marco Island City Council Meeting October 29, 2007 Experimental Design Four Stationary Hydrogen Sulfide Analyzers Driveway Monitor Air Discharge Monitor House Monitor

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Hydrogen Sulfide Ambient Air Monitoring Hummingbird Court, Marco Island, FL' - emily


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
hydrogen sulfide ambient air monitoring hummingbird court marco island fl

Hydrogen Sulfide Ambient Air Monitoring Hummingbird Court, Marco Island, FL

Presented at the City of Marco Island City Council Meeting

October 29, 2007

experimental design
Experimental Design
  • Four Stationary Hydrogen Sulfide Analyzers
    • Driveway Monitor
    • Air Discharge Monitor
    • House Monitor
    • Water Discharge Monitor
  • Weather Station
    • Wind speed, wind direction, temperature, humidity, rainfall and barometric pressure
  • Continuous Monitoring at 2-minute intervals
monitor placement per discussion with fl doh and atsdr
Monitor Placement Per Discussion with FL DOH and ATSDR
  • Monitors were placed based on discussions with ATSDR and FL DOH, wind forecasts, and professional judgment in the field
  • Driveway Monitor
    • Located at a more conservative distance of 38 feet from air discharge in swale across the street
    • Distance from air discharge to edge of home = 60 feet
  • Air Discharge Monitor
    • Located within site fencing at a more conservative distance between discharge and sidewalk ~ 10 feet from air discharge
  • House Monitor
    • Located at a more conservative distance of 48 feet from air discharge
    • Distance from air discharge to corner of house = 55 feet
  • Water Discharge Monitor
    • Located within site fencing at a distance approximating sidewalk exposure ~ 10 feet from water discharge
hummingbird court site layout and monitor locations

N

Hummingbird CourtSite Layout and Monitor Locations

E

W

S

Treatment Unit

Driveway

H2S Monitors

Air Discharge

Water Discharge

House

h 2 s concentrations detected at house monitor hummingbird court marco island fl
H2S Concentrations Detected at House MonitorHummingbird Court, Marco Island, FL

Period “B”

Post-Modification

Period “A“

Pre-Modification

ATSDR 1-Hour Average Criterion = 100 ppb

ATSDR 1-Hour Average Criterion = 100 ppb

h 2 s concentrations detected at driveway monitor hummingbird court marco island fl
H2S Concentrations Detected at Driveway MonitorHummingbird Court, Marco Island, FL

Period “A“

Pre-Modification

Period “B”

Post-Modification

ATSDR 1-Hour Average Criterion = 100 ppb

h 2 s concentrations detected at air discharge hummingbird court marco island fl
H2S Concentrations Detected at Air DischargeHummingbird Court, Marco Island, FL

Period “B”

Post-Modification

Period “A“

Pre-Modification

ATSDR 1-Hour Average Criterion = 100 ppb

h 2 s concentrations detected at water discharge hummingbird court marco island fl
H2S Concentrations Detected at Water DischargeHummingbird Court, Marco Island, FL

Period “B”

Post-Modification

Period “A“

Pre-Modification

ATSDR 1-Hour Average Criterion = 100 ppb

average h 2 s concentrations detected at driveway monitor by wind direction pre and post treatment
Average H2S Concentrations Detected at Driveway Monitor by Wind Direction Pre- and Post-Treatment
slide13
Average H2S Concentrations Detected at Air Discharge Monitor by Wind Direction Pre- and Post-Treatment
slide14
Average H2S Concentrations Detected at Water Discharge Monitor by Wind Direction Pre- and Post-Treatment
conclusions
Conclusions
  • During Period B (post-treatment), the treatment process was effective at limiting ambient air H2S concentrations to levels below ATSDR/DOH criteria.
    • Maximum 10-minute peak concentration detected at any monitor was 125 ppb – well below the FL DOH/ATSDR 10,000 ppb criterion.
    • Maximum 1-hour average concentration at any monitor was 86 ppb – below the 100 ppb criterion.
    • Maximum 19-hour average concentration was 13.1 ppb – below the 24-hour criterion of 20 ppb.
  • H2S Concentrations detected during the initial monitoring period (Period A) exceeded FL DOH/ATSDR’s 1-hour criterion of 100 ppb and 24-hour criterion of 20 ppb.
  • Per FL DOH/ATSDR, system modifications were thereby warranted and initiated resulting in a marked improvement in H2S vapor control.
h 2 s concentrations detected at source monitor amber drive marco island fl
H2S Concentrations Detected at Source Monitor Amber Drive, Marco Island, FL

Maximum 24-hour Average= 19.3 ppb

ATSDR 1-Hour Average Criterion = 100 ppb