public meeting synthetic turf infill options and drinking...

PUBLIC MEETINGSynthetic Turf Infill Options and

Drinking Water Supply Well Head ProtectionMay 22, 2018

Wayland High School Athletic Facilities Improvements | 2018


INTRODUCTIONSWeston & Sampson Team

(Gene Bolinger, Brandon Kunkel, Cass Chroust, Kevin MacKinnon, Michael Moonan, Marie Rudiman)

MEETING AGENDA Project Status Update

Turf Infill Options Well Head Protection Questions + Comments


PROJECT STATUS UPDATE

05.23.18 Loker Neighborhood Meeting 06.20.18 High School Neighborhood Meeting

Design Development Phase


S Y N T H E T I C T U R F S Y S T E M C O M P O N E N T S


Rubber | Plastic Natural | Organic Minerals/Coated Minerals

Wide use, best performance + resiliency

Organic Longest life before replacement

Some recycled Prone to migrating, more maintenance

Less resiliency, harder surface

Perception of toxicity Requires shock pad, higher cost

Requires shock pad, higher cost

Heavy metals in trace amounts, not releasable

Moisture required to retain resiliency, can freeze

Can be abrasive

Shock pad required with some products

May contain pesticides, heavy metals in trace

amounts that are releasable

S Y N T H E T I C T U R F I N F I L L O P T I O N S


S Y N T H E T I C T U R F I N F I L L O P T I O N S


T O X I C O L O G Y O F S Y N T H E T I C T U R F S Y S T E M S

R I S K = E X P O S U R E x T O X I C I T Y

Bioavailability of chemicals in synthetic turf fields We will analyze proposed crumb rubber prior to installation

Metals Benzothiazole PAHs, SVOCs VOCs

Ways we looked at available data to determine if the risks are acceptable Comparison to applicable standards Ingestion of crumb rubber particles (CRP) Dermal contact with CRP and turf bed Inhalation of chemicals that may volatilize from the synthetic field Leaching of chemicals into groundwater

We will evaluate data we collect from proposed fields in the same manner


C O M P A R I S O N T O A P P L I C A B L E S T A N D A R D S



C O M P A R I S O N T O S O I L S S T A N D A R D S



Risk Assessment is a way to estimate potential health risks from exposure to chemicals

Risk = Exposure x Toxicity

Conclusion: Potential Risks are an Acceptable Exposure/Negligible Exposure

– Residential Receptor– Age 1 through 31 years

– 30 year exposure

E V A L U A T I O N T H R O U G H R I S K A S S E S S M E N T



Maximum detected concentrations were used Subchronic exposure (1 yr old) 2 days/wk/30 weeks Chronic exposure 3 days/wk/30 weeks Exposure through ingestion and dermal contact Ingest 100 mg/kg crumb rubber on each day of exposure Crumb rubber sticking to face, forearms, hands, lower legs

and feet Assumes crumb rubber can be ingested like soil and

adheres to skin like soil. Reality: far less exposure!

C O N S E R V A T I V E R I S K A S S E S S M E N T A S S U M P T I O N S



W E L L H E A D P R O T E C T I O N

Existing Site Conditions1:12,000



Existing Site Conditions1:12:000



Surficial Geology1:12,000



Monitoring Well Network (1:3,600)



Pumping Water Level Elevations (2010)1:3,600



AECOM Capture Zone (2010)1:12,000



DEP Approved Zone II1:24,000



Cross-Section Map



Cross-Section A-A’



Cross-Section B-B’



Cross-Section C-C’


T H A N K Y O U ! ! !

Questions + Comments

public meeting synthetic turf infill options and drinking...

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