Coak oakley L y Lan andfi dfill Update Update Se Sept ptember - - PowerPoint PPT Presentation

Coak

• akley L

y Lan andfi dfill Update Update

Se Sept ptember 1 14, 2 , 2016 Presen esented ed b by New ew Hamp mpshire Dep epartme tment t of

• f

Environm

• nmenta

ntal S Services

 PFOA/PFOS results  1,4-dioxane status & groundwater flow  Information needs  Area drinking water well review  Summary of next steps

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GREENL ENLAND ND North Ha Hampton Rye Exis istin ing Su Subdiv bdivisio ion Pro Propo posed Su Subdiv bdivisio ion Exis istin ing Su Subdiv bdivisio ion

Coak akley Landfill ill

GM GMZ

Groundwater Management Zone (GMZ)

PFOA PFOA/PFOS /PFOS Res Resul ults ts

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Groundwater Flow Direction

Coak akley Landfill ill

GM GMZ

Inf Infor

• rmati

tion N

• n Needs

eeds

Groundwater Mngmnt Zone (GMZ)

Coakley ey Landfill ill

 Gener

eneral al

• Area well review (postcards to be mailed week of 9/19)
• Support EPA in further evaluation of PFOA/PFOS
• Surface water & sediment sampling for 1,4-dioxane &

PFOA/PFOS

 Nor

North of

• f Landf

Landfill

• Residential well sampling to continue
• Compliance wells (demonstrate clean boundary)
• Water main extension to proposed subdivision
• Support Town of Greenland in sampling of residential wells

 Sout

• uth of
• f Landf

Landfill

• PRP-lead residential well sampling to continue
• Compliance wells to be identified

 Eas

East of

• f Landf

Landfill

• Confirm groundwater flow direction
• Evaluate next steps

12” Main 12” Main Bethany Church Breakfast Hill Road Proposed Subdivision Existing Water Tower

Homes sampled in Stone Meadow Way neighborhood had no 1,4-dioxane detected.