synthetic turf study webinar - oehha...nov 16, 2015 · •new crumb rubber, artificial grass...
TRANSCRIPT
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Synthetic Turf Study Webinar
Office of Environmental Health Hazard Assessment (OEHHA)
California Environmental Protection Agency (CALEPA)
1 November 16, 2015
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Welcome Lauren Zeise, Ph.D.
Acting Director
• Webinar goal
–Solicit public input on various aspects
of OEHHA’s study on synthetic turf
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Synthetic Turf Synthetic or artificial turf is used in athletic fields.
It is composed of two parts:
Synthetic grass blades:
• soften the play surface
• look like natural grass
Backing materials
Crumb rubber infill:
• is made from chopped-up waste tires
• supports synthetic grass blades
• cushions falls
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Synthetic Turf
Tire rubber (or crumb rubber): a complex material made of natural rubber and synthetic materials.
Types and levels of chemicals released from crumb rubber depend on the source of material, weather, age of field, and other factors.
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Study Purpose and Scope
What: OEHHA is conducting a study on potential health effects from the use of synthetic turf fields and playground mats made from recycled tires
Why: To further our understanding of: – chemicals that can be released from synthetic turf
and playmats–human exposures to these chemicals–potential adverse health effects of these chemicals
When: 2015-2018
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Outline of Presentation
Topics for today’s webinar:
• Exposure Scenarios
• Sampling and Analysis
• Health Effects of Concern
• Plans for Possible Future Personal Monitoring and
Biomonitoring Studies
The webinar will pause for questions and comments
after each topic.
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Overview of Synthetic Turf Study
Melanie Marty, Ph.D.
Acting Deputy Director for Scientific Affairs
OEHHA
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Who is exposed?
Young children
Youth sport participants
Coaches, referees
Parents, bystanders
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Factors Influencing Exposure
Exposure
Route
Inhalation
Skin
contact
Ingestion
Frequency
Hours
per Day
Days per
Week Weeks
per Year
Exposure
Duration
Starting
Age
Years of
Exposure
Location
Indoor field
Outdoor
field
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Sampling and Analysis
• Which fields to sample?
• What to sample?
• Which chemicals to look for?
• How to measure the chemicals?
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Which fields should be sampled?
Samples: from indoor and outdoor synthetic turf fields and playground mats in several regions of CA
Considerations in field/mat selection
–Age of field or mat
–Climate region (regional climate influence, weatheringof material and activity patterns)
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What kind of samples would we take? Types of samples • New crumb rubber, artificial grass blades,
playground mats
• In-field crumb rubber and artificial grass blades
• Air sample (chemical vapors and particulates)
‒ 3 feet above ground (normal breathing zone for children)
‒ on ground surface
• Surface wipe sample (fields, mats, gloves and ballsafter a game)
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Which chemicals should be studied?
Chemical analysis: identifies and quantifies chemicals
Organics: – Volatile organic compounds (VOCs)• easily released into the air
– Semi-volatile organic compounds (sVOCs)• released into the air to some degree
– Polycyclic aromatic hydrocarbons (PAHs)• most not volatile; complex chemicals found in tars and
petroleum
Metals: Zinc, Lead, Chromium
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How would we measure the chemicals?
Air Particulates
Filters
Artificial lung fluid extraction
Crumb rubber Artificial grass
blades
Artificial saliva extraction
Artificial stomach fluid extraction
Artificial intestinal fluid extraction
Artificial sweat extraction
Analytical instruments
Chemical identification/quantification 14
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Potential Health Effects
Cancer
Neurotoxicity
Reproductive Effects
Immune System Effects
Developmental Effects
Organ Toxicity
Respiratory Effects
Endocrine Disruption
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What health effects are of concern?
Adverse health effects can be caused by short-term or long-term exposure to chemicals.
Different chemicals or chemical classes may cause: –different types of adverse health effects–more than one type of adverse health effect
An individual’s response to chemicals may be affected by:
–age ‒ disease status –sex ‒ other factors –genetic background
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Plans for Possible Future Personal Monitoring and Biomonitoring Studies
Results from this new study may provide data on:
• the chemicals that could be monitored
• the biomarkers of effects that could bemonitored
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Planning to monitor people
• When should sport participants be monitored?
• During play?
• During practice?
• Which participants?
• Which sports?
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Biomonitoring • Measures the amount of chemicals in a
person’s body
• May tell us:– if people have been exposed to certain chemicals
– if their exposure level and/or pattern changesover time
– if exposure is different between different groupsomen and women
ochildren and adults
osport participants and bystanders
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Personal monitoring
• measures the amount of chemicals a person is exposed to while on or near synthetic turf
• samples can be collected in many ways:
– Personal air monitors
– Special clothing and gloves worn during sports/games
– Other collection devices
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Types of samples
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• Next steps
• Join OEHHA Synthetic Turf Listserv at: oehha.ca.gov/risk/SyntheticTurfhttp://
Studies.html • Thank you for participating today!
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Questions and Comments can be sent to the following email address:
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