Recommended
Recommended
More Related Content
What's hot
What's hot (17)
Viewers also liked
Viewers also liked (20)
Similar to Ambient Air Radon Monitoring Around Mosaic Riverview’S Phosphogypsum Board Presentation
Similar to Ambient Air Radon Monitoring Around Mosaic Riverview’S Phosphogypsum Board Presentation (20)
Ambient Air Radon Monitoring Around Mosaic Riverview’S Phosphogypsum Board Presentation
- 1. AMBIENT AIR MONITORING NEAR MOSAIC’S PHOSPHOGYPSUM STACK EPC Board Meeting
- 3. DEVELOPMENT OF REGIONAL IMPACT (DRI) #242 DRI is a development having a widespread impact on the community Development Order Specific Condition A.8.a. Two ambient air dust samplers were placed at Progress Village Middle School and Gibsonton Elementary
- 4. DUST MONITORING SITE MAP Existing Monitoring Stations Additional Monitoring Stations
- 5. DUST MONITORING RESULTS The dust monitoring showed no statistically significant difference in dust concentrations
- 6. RADON MONITORING Phosphogypsum is stacked near the chemical processing plants The radioactivity of the stacked phosphogypsum is considered low level Radon gas is a colorless, odorless gas that emanates from the ground In 2010, EPC entered into a contract with the Florida Department of Health
- 7. RANDY PENN Environmental Manager Florida Department of Health Division Of Environmental Health Bureau of Radiation Control
- 8. RADON MONITORING SITE MAP Two rounds of monitoring were conducted 16 sites around the gypstack were selected along with the subject schools and a control site
- 9. MEASUREMENTS Radon study looked at alpha particles and gamma rays Measurements were taken for 90 days Gamma readings were taken at the time of deployment
- 13. CONCLUSIONS The average for both the first and second deployment at the gypstack is 0.68 pCi/L Based on the initial study, the results do not indicate any elevated readings at any of the schools Overall, the sampling periods showed some differences
Editor's Notes
- Sean Here to discuss air monitoring results around the phosphogypsum stack Including dust sampling by EPC and radon monitoring by FDOH which will presented by Randy Penn
- Sean Give overview of fertilizer manufacturing process
- Sean DRI definition DRI to be discussed today is #242 Established in June of 2000 out of DRI #76 DRI #242 included the expansion of the stack height by 50 feet and extend the life of the stack out to 2037 Many citizens had concerns about the expansion Specific condition to require dust and radon monitoring 2003 – 2007 dust sampling at Gibsonton and Progress Village
- Sean Point out the relationship between the locations
- Sean Compare schools to other locations in County and National Average < 20% of the National Standard Concluded that the schools were very similar to other areas of the County
- Sean Phosphogypsum stack is just east of HWY 41 EPA has required stacking of the phosphogypsum since 1989 Associated with low-level radioactivity is radon which emanates from the ground Can lead to lung cancer EPC entered into a contract with FDOH in 2010 to do radon monitoring included the schools in the dust study and also added Ippolito Elementary
- Sean Introduce Randy
- Randy Should mention the purpose of the control site and why it is over 4 miles away. Two rounds of monitoring were conducted to encompass both the cool season (February – May) and a hot season (June – October) 16 sites around the gypstack were selected along with the subject schools (Gibsonton Elementary, Ippolito Elementary, and Progress Village Middle School) and a control site several miles east of the stack
- Randy Should include a brief explanation of alpha and gamma and the public health concerns of each Radon study looked at alpha particles and gamma rays Measurements were taken using a Landaurer Alpha Track and a thermoluminscent dosimeter (TLD) mounted atop a PVC pole 6 feet off the ground and left onsite for 90 days Gamma readings were also taken at the time of deployment using a handheld exposure ratemeter
- Randy Explain why EPA Action Level was used as a surrogate
- Randy
- Randy
- Randy – the three bullets Sean – Wrap up This information was presented to school administrators in July Based on recommendations from DOH, EPC will continue the study using funds Mosaic set aside at the inception of the DRI DOH will evaluate and reconcile the season differences