Onondaga LakeSyracuse, New York

Harbor Brook

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PREFERRED REMEDYFOR SMU 1

NOTESBathymetric contours are at 1-meterintervals based on current bathymetryAll listed depths based on estimated post-remediation bathymetry unless otherwise notedHabitat enhancement would also include placement of large woody debris structures in water depths between 4 and 15 feet to provide cover and increase foraging opportunities for fish.

SMU 1

SMU-7

SMU 8SMU 2

-5

-6

-9

-1

-3-5-7

-9

SMU-6

690

-11

Wastebed B

690S29

S338

S401

S309

S340S341

S402

S342 S310

S344

S403

S343

S345

S346

S347S21 S404

S15

S405

S312S20

S311

S348

S349

S350

S14

S406

Wastebed B

East Flume

-13

SYW-19

Alternative 4.A.4 - Dredging to Remove 25% (2 meter depth average) of the In-Lake Waste Deposit plus Hot Spots / Isolation Capping to Mean PECQ1 plus Mercury PEC

Area Dredged to Maximum Habitat Depth after Capping (to current 13.5' depth, 61.9 ac)Sand - Recreational / Habitat Buffer Area Over Isolation Cap (shoreline to 20' offshore, 1.9 ac)Sand - Submerged Macrophyte / Benthic Area Over Isolation Cap (20' offshore - 6' depth, 5.8 ac)Fine Gravel - Fish Spawning Habitat Over Isolation Cap (6' depth to 15' depth, 57.3 ac)Sand - Benthic Substrate Area Over Isolation Cap (15' depth - 29.5' (9m) depth, 19.8 ac)WetlandBoundary of Theissian Polygon Surrounding Sample LocationWastebed B / Harbor Brook IRM Barrier Wall (part of IRM, location is conceptual. Dashed section is conceptual)Sample Location

0 250 500125Feet