Areas of Operable Unit 5 (The River and Portage Creek)

River Reach/ Area Area 1 – Morrow Dam to Plainwell Dam Area 1 – Portage Creek Area 2 – Plainwell to Otsego City Dam Area 3 – Otsego City to Otsego Dam Area 4 – Otsego to Trowbridge Dam Area 5 – Trowbridge to Allegan City Dam Area 6 – Lake Allegan Area 7 – Allegan Dam to Lake Michigan

Average Average Length Water Depth River (miles) (ft) Width (ft) 21.9 3.4 181 2.0 2.3 32 1.7 2.5 450 3.4 3.8 200 4.7 5.0 248

Area (acres) 487 8 96 83 131

9.1

4.3

292

317

9.8 26

6.7 5.5

1,500 212

1,650 670

PLAINWELL

Area 1 – Morrow Dam to Plainwell Dam, Lower Reach of Portage Creek

Plainwell Dam

FLOW

PARCHMENT

Morrow Dam Portage Creek/ Kalamazoo River Confluence

US 131

KALAMAZOO

Portage Creek

Update on River Progress AREA 1 • Supplemental Remedial Investigation/Feasibility Study (RI/FS): Draft submitted 4/22/11 to EPA • Feasibility Study of potential remedial alternatives to be submitted in Fall/Winter 2011 • Final remedy decision for Area 1 in late 2012

AREA 2: Otsego City Impoundment Plainwell

Otsego City

Study Area

Update on River Progress AREA 2 • Conducting field reconnaissance Winter/Spring • Supplemental RI/FS sampling to begin Summer through Fall 2011 • Two field seasons to complete RI/FS investigation

Area 3: Otsego Impoundment

Update on River Progress AREA 3 • September 1, 2011: Start of Area 3 Supplemental RI/FS • Field work to begin in Spring 2012

Plainwell No. 2 Dam Area Kalamazoo  River

Plainwell  “The Island City”

Plainwell No. 2 Dam

Mill Race

Former River  Oxbow MFE: July 14 2009 public mtg_FINAL.ppt

9

Plainwell No. 2 Dam Area Time-Critical Removal Action Project Area: 2009-2010

Plainwell No. 2 Dam PROJECT ACTIVITIES • • • • • • •

Access to River Construct staging areas and roadways Excavation, Verification and Restoration Habitat Restoration and monitoring – 3 yrs Bank Monitoring – 3 yrs Vegetation Monitoring – 3 yrs Exotic/Invasive Species Control

Summary of Construction Activities Bank Length Removed (linear feet) Volume Removed (cubic yards) Material Disposed (tons) Area Restored (acres) Woody Plantings (trees and shrubs) Confirmation Samples Collected

2009

2010

Total

4,300

6,700

11,000

5,000

13,500

18,500

7,700

16,200

23,900

6

5

11

1,120

1,984

3,104

396

984

1,380

Portage Creek PCB Hot Spots.pdf

Page 1 of 13. Areas of Operable Unit 5. (The River and Portage Creek). River Reach/ Area Length (miles) Average Water Depth (ft) Average River Width (ft) Area ...

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