Preliminary Hydrogeologic Evaluation Part #1

Cedar Ridge EstatesApplication for Comprehensive Permit

Under MGL Ch40B Residential Development

www.greenviewrealty.com

Green View Realty, LLC189 Hartford Avenue, Suite 2-1

Bellingham, MA 02019

Owner/Project Manager:Green View Realty, LLC

Bellingham, MA

Architect:Egnatz Associates, Inc.

Bolton, MA

Attorney:Rubin & Rudman LLP

Boston, MA

Engineer:Coler & Colantonio, Inc.

Norwell, MA

www.greenviewrealty.com

Preliminary Hydrogeologic Study

Completed Tasks:

• Town Records, Multiple Departments

• DEP File Review

• Historic Bird Property Reports

Projected Tasks:

• Installation of monitoring wells in proposed treatment area,

• Survey of existing wells (on both the Former Bird Property and surrounding properties),

• Sampling of new and some of the surrounding wells, and

• Development of a groundwater flow & projected mound analysis models.

Page 3, Paragraph (g)

Taken from: Mass GIS Oliver

Site Boundaries & WWTF Location Approximate

Well No. 4 ~1.7 miles from Site Well No. 3

~1.9 miles from Site

LocusCEDAR RIDGE ESTATES

Locus PlanHolliston, Massachusetts

B1

B10

B9

B2

B3

MW-1

B6

B

B’`

B8

5

iEP Inc. 1988 Groundwater Quality Monitoring Wells of

the Cedar Brook Aquifer

Well No. 4 ~1.7 miles from Site Well No. 3

~1.9 miles from Site

B1

B10

B9

B2

B3

MW-1

B6

B7

B4

iEP Inc. 1988 Groundwater Quality Monitoring Wells of

the Cedar Brook AquiferA

B

B’`

Bedrock

Sand & Gravel

Water Table Elevation

B1MW-1Town

Well 4

B8

B5B5

B8

B6B7 B9

B3

B10B1

Town Well 4 Town

Well 3

BedrockSand & Gravel

Peat

Water Table Elevation

• All 10 monitoring wells installed by iEP were sampled for VOCs in July and October 1988

• No VOCs were detected in any of the wells except B2

• iEP concluded that the low levels of TCE and toluene in B2 were most likely attributable to a nearby septic system

• Method 3 Risk Characterization prepared by Weston & Sampson Engineers, Inc. in 2001 for the Town of Holliston Marshall Street Landfill

• An elevation survey of 4 wells located in the vicinity of the landfill, indicated that groundwater flow is easterly toward the wetlands

• VOCs were not present above detection limits, except for 1,2,4-trimethylbenzene which was detected in only one of the wells

B1

B10

B9

B2

B3

MW-1

B6

B7

B4

iEP Inc. 1988 Groundwater Quality Monitoring Wells of

the Cedar Brook AquiferA

B

B’`

B8

B5

END OF SHOW