arcadis - presentation slides - proposed scope for … · p2rt-6-2 p2bn-23 p2bn-24 p2bn-26...

us EPA RECORDS CENTER REGION 5

^ ARCADIS

Settlement Confidential - FOIA Exempt

407110

Proposed Scope for Focused Cleanup of Plainwell No. 2 Dam Area April 13,2009

Background Settlement Confidential - FOIA Exempt

KRSG, USEPA, MDEQ, and Natural Resource Trustee met 10/07/08 to review KRSG's proposed Next Steps for Cleanup and Restoration of the Kalamazoo River - Included scope for cleanup of Plainwell No. 2 Dam Area

Conceptual Design Report for Bank Removal and Restoration -Plainwell No. 2 Dam Area (CDR) submitted to USEPA 11/04/08

A meeting was held 12/04/08 to discuss Agencies' review of the CDR

Additional data from MDEQ forwarded to KRSG on 12/29/08

A planned January 2009 meeting to complete scope discussions was canceled by Millennium Holdings, LLC

ARCADIS reconnoitered Island 2 side channel area in February 2009

This updated proposed scope for jointly funded cleanup agreement with USEPA was modified in response to Agency comments on the initial proposal, and additional information from MDEQ

^ A R C A D I S

Summary of Scope Adjustments from Conceptual Design Report


Information from MDEQ was incorporated to generate updated cumulative mass removal basis for targeting bank segments

- New bank segments included near the Dam, Island 2 side channel - PCB mass removal increased to 92% of available inventory - Bank removal increased to 53% of total length

0.9-acre floodplain area near mouth of oxbow with 44 (J) mg/kg PCB in the surface soil (0 to 0.5-foot interval) included

Remaining floodplain and bank soil PCB concentrations average 2.3 mg/kg with a median of 1.3 mg/kg

0.9-acre sediment area on west side of oxbow included down to midpoint between sediment samples P2RT7-7 and P2RT8-7

Removal of toe-of-bank sediments in specific areas

- To be determined in design based on individual transect information - Allowed for using 1.5 ft^ cross-sectional excavation along length of

removed bank

^ ARCADIS

Proposed Removal Areas Settlement Confidential - FOIA Exempt

SOIL SAMPLE LOCATION TOPOGRAPHY/BATHYMETRY CONTOUR - 0.5 FT INTERVAL

MAXIMUM PCB RESULT (ppm): [~ [ SHORELINE (APPROXIMATE)

1 BANKAND SEDIMENT REMOVAL AREA

SEDIMENT REMOVAL AREA

ADDITIONAL BANKAND SEDIMENT REMOVAL AREA BASED ON MDEQ DATA !

^ ^ ADDITIONAL SEDIMENT REMOVAL AREA

FLOODPLAIN REMOVALAREA

l a ARCADIS


Removal Scope: Proposed Bank Soil PCB Mass Removal

100

90

80

c

•o

> o E

(0 (0 10

ffi O a. .1 S. 3 E 3

o

70

60

50

40

30

20

10

" " ^ i i i i l m m ^ ^ ^ ^ ^ ^ ^ W ^

. . - • " - ,

1 1

^ * 1 • Cumulative PCB Mass

^ , ^ - Propose(J Removal

• 1

« 1 • '

• 1

• 1 • 1

• 1

^

1 1 ] 1 — ' 1 1

0.0 0.5 1.0 1.5 2.0 2.5

Cumulative Length Removed (miles)

3.0 3.5

(SI ARCADIS



100

90

- ^ 80

a>

? o E & tn

ffi O Q.

_2 3 E 3

o

70

60

50

40

30

20

10

• mmmmm ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ H

*

. • •

, . - * • • •

«• «• Ti *^ *

o o o o o o o o o o o oo 0 0 o

1 1

• •

•

• •

• •

• • • •

• •

• • • •

• • •

• •

•

• ^ •

•

• • 1 • •

1

•

•

• •

• • •

- " ' u 1 1

1

•

•

•

o • n • o

1 Cumulative PCB Mass (removecj)

- Proposecj Removal Cumulative PCB Mass (not removed) Depth-weighted PCB Concentration Removed Depth-weighted PCB Concentrations Not Removed Maximum PCB Concentration Removed Maximum PCB Concentration Not Removed

1 1 1 1 1

1 1 1 . ^ P2BS-35 1 o

• • • 1 8^ P2BS-26

100

90

80

70

60

50

40

30

20

10

"3) E

I 0)

u c o o ffi o Q.

0.0 0.5

^ ^ o u ^ t s

1.0 1.5 2.0 2.5


3.0 3.5

Scope Summary Settlement Confidential - FOIA Exempt

Parameter

^ ^ _ Bank Length

I ^ H Bank Area

• Bank Soil Volume

Extent of Removal

2.1 miles

7.1 acres S

11,200 cy

Floodplain Area

Floodplain Volume

Sediment Volume

TOTAL VOLUME

0.9 acres

780 cy

2,290 cy

14,270 cy

(SI ARCADIS

TSCA Disposal Requirements Settlement Confidential - FOIA Exempt

App l ica t ion of Fox River Protocol - Depth-weighted average PCB concentration to 30 inches or depth of

removal - Evaluated on basis of removal segments - Combined results from samples collected by ARCADIS and MDEQ

when both present in a removal segment

No mater ia ls require TSCA d isposa l - Five removal segments contained either sediment or soils with

maximum PCB concentration > 50 mg/kg PCB - Depth-weighted average PCB concentrations over removal depths

in these five removal segments range from 34.6 to 42.5 mg/kg

m ARCADIS


Removal Segments with Max PCB > 50 mg/kg LEGEND:

<i»S0IL SAMPLE LOCATION (MAXIMUM PCB RESULT (ppm):

< 1 1 -<5 5-<15 15-<25 25 - < 50 >50

SEDIMENT SAMPLE LOCATION MAXIMUM PCB RESULT (ppm):

TOPOGRAPHY/BATHYMETRY CONTOUR - 0 6 FT INTERVAL I I SHORELINE (APPROXIMATE)

• • BANKAND SEDIMENT REMOVALAREA

J H i SEDIMENT REMOVALAREA

m i POTENTIAL ADDITIONAL BANKAND SEDIMENT REMOVALAREA BASED ON MDEQ DATA

• • FLOODPLAIN REMOVALAREA

POTENTIAL TSCAAREA

dARCADIS


TSCA Disposal Evaluation According to Fox River Protocol • • • • • 1

Locat ion

P2FP-053

P2RT-6-2

P2BN-23

P2BN-24

P2BN-26

^^HR-

^ • » . •

• • • m MDEQ

Sample ID

N/A

N/A

PSD-36 and PSD-37

PSD-36 and PSD-37

PSL-40

"1

^ ^ ^ ^ H

Removal Depth

12 inches

18 inches

12 inches

12 inches

24 inches

^

Sample Interval Top (in)

0 6

12 0 2 6

12 18 24 0 6

12 14

0 6

12 20

0

6

8

12

19

Bot tom (in)

6 12 24 2 6 12 18 24 27 6

12 14 21 6 12 20 24

6

8

12

19

23

PiPliPPi'''''

Th ickness

(in) 6 6

12 2 4 6 6 6 3 6 6 2 7 6 6 8 4

6

2

4

7

4

ARCADIS PCB

(mg/kg) 13J 60 J 0.92 43.4 100 22.6

0.086

0.086 0.054 0.88 0.27 0.27

ND (0.064 U) 1.1

0.46 J 0.13

ND (0.082 U)

7.6 J

8.4 J

8.4 J

45

45

MDEQ PCB

(mg/kg)

80 66 66

80 66

47

47

73

73

^

^^^^^^HBBHB

Average PCB

(mg/kg

41 33 33

0.032 41 33

0.13 0.041

27

28

41

59

45

Non-TSCA | Not included In calculation 1 JKKtKK^

PiiPPi"''' Depth-

Weighted PCB

36.5

34.6

36.9

37.1

42.5

•

TSCA Determinat ion

Non-TSCA

Non-TSCA

Non-TSCA

Non-TSCA

Non-TSCA

• • ^ • • • • 1

l i ^ ^ ^ ^ l

^ 1 J ^ ^ H

i9f ARCADIS 10

^ ARCADIS

Estimated Planning and Removal Action Schedule


Plainwell No. 2 Dam Area

Administrative Process Meeting w ith USEPA and MDEQ to finalize scope Preparation of Work Plan for AOC Working Meeting to finalize Scope Finalization of Work Plan for AOC Obtain Access Agreements Finalization of AOC Document Preparation of USEPA Action Memo Public Meeting to Describe Project Scope and Schedule

Design Process Prepare Draft Design Documents Review of Draft Design by Agencies/Tmstees Prepare Final Design Documents Review of Final Design by USEPA and working meetings if needed USEPA Approval of Remdial Action Design

Implementation Mobilization/Staging/Access/Clearing Year 1 Removal Actions Year 2 Removal Actions

2009-01 2009-02 2009 - 03 2009-04 2010-01 2010-02 2010-03 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

^ 4/13

t

^

l a ARCADIS 12

u^/5-of i^^:\ <a ARCADIS c J CAL ^^^^ ef

Proposed Scope for Focused Cleanup of Plainwell No. 2 Dam Area April 13,2009


Background Settlement Confidential - FOIA Exempt

KRSG, USEPA, MDEQ, and Natural Resource Trustee met 10/07/08 to review KRSG's proposed Next Steps for Cleanup and Restoration of the Kalamazoo River - Included scope for cleanup of Plainwell No. 2 Dam Area

Conceptual Design Report for Bank Removal and Restoration -Plainwell No. 2 Dam Area (CDR) submitted to USEPA 11/04/08

A meeting was held 12/04/08 to discuss Agencies' review of the CDR

Additional data from MDEQ forwarded to KRSG on 12/29/08

A planned January 2009 meeting to complete scope discussions was canceled by Millennium Holdings, LLC

ARCADIS reconnoitered Island 2 side channel area in February 2009

This updated proposed scope for jointly funded cleanup agreement with USEPA was modified in response to Agency comments on the initial proposal, and additional information from MDEQ

(SI ARCADIS

Summary of Scope Adjustments from Conceptual Design Report


Information from MDEQ was incorporated to generate updated cumulative mass removal basis for targeting bank segments

- New bank segments included near the Dam, Island 2 side channel - PCB mass removal increased to 92% of available inventory - Bank removal increased to 53% of total length

0.9-acre floodplain area near mouth of oxbow with 44 (J) mg/kg PCB in the surface soil (0 to 0.5-foot interval) included

Remaining floodplain and bank soil PCB concentrations average 2.3 mg/kg with a median of 1.3 mg/kg

0.9-acre sediment area on west side of oxbow included down to midpoint between sediment samples P2RT7-7 and P2RT8-7

Removal of toe-of-bank sediments in specific areas

- To be determined in design based on individual transect information - Allowed for using 1.5 ft^ cross-sectional excavation along length of

removed bank

(SI ARCADIS


Proposed Removal Areas ^

• • • " . ' ^

p

ILA"^*" LtGENu SEDIMENT SAMPLE LOCATION MAXIMUM PCB RESULT (ppm):

O © ©

O 1 m \ •

SfRUCTtjSEJI^B

^

1

1 P

1 '

< i

1 -<5

5 -<15

15-<25

25-<50

.>50

SOIL SAMPLE LOCATION MAXIMUM PCB RESULT (ppm):

D < 1

B 1 -<5

E 5 - < 1 5

D 15-<25

a 25 - < 50

• >50

1 K~ OBLsTRUCTURE

• > \ ^ f ".s-i '

Hl^,

TOPOGRAPHY/BATHYMETRY CONTOUR - 0.5 FT INTERVAL

SHORELINE (APPROXIMATE)

BANKAND SEDIMENT REMOVALAREA

SEDIMENT REMOVAL AREA

$ § 5 ADDITIONAL BANKAND SEDIMENT REMOVAL AREA BASED ON MDEO DATA j

5 $ $ ADDITIONAL SEDIMENT REMOVALAREA

FLOODPLAIN REMOVALAREA

I



100

90

80

c u 0)

•D 0) > o E 0)

QC (A (A ra

CQ O D . 0)

3

E 3

o

70

60

50

40

30

20

10

^ ^ . ^ 0/ L ^ ^ ^ ^ ^ • • • • • t 4*7 / i**'

1 1

^ * 1 • Cumulative PCB Mass

^ , ^— - Proposed Rennoval

• 1

* 1

• 1 • 1

• 1 • 1

•

«.

^ J

0.0 0.5 1.0 1.5 2.0 2.5


3.0 3.5

(3i ARCADIS



100

90

^ 80 C

s 0)

0) > o E

in tn a

QQ U Q. 0)

_>

Si 3 E 3

o

70

60

50

40

30

20

10

1 o O o o o o o o o o o oo 0 0 0 1 • o o ^ " "

z x-¥»* <M 1

A

^ *

, . • - * • • •

<• • • 1 1 1

• •

•

• •

•

• •

• « •

• • •

•

• •

• •

•

• •

• •

•

• ^ •

•

• • •

- •

• • 1 • •

•

•

• •

• • •

1

• 1

1

•

•

1 • Cumulative PCB Mass (removed)

• ^ - Proposed Removal o Cumulative PCB Mass (not removed) • Depth-weighted PCB Concentration Removed D Depth-weighted PCB Concentrations Not Removed • Maximum PCB Concentration Removed o Maximum PCB Concentration Not Removed

1

1 P2BS-35 1 o

• • • 1 8^ P2BS-26

100

90

80

70

60

50

40

30

20

10

O)

E

CO k. *^ c 0) u c o o ffi o Q.

0.0 0.5

(SI ARCADIS

1.0 1.5 2.0 2.5


3.0 3.5

Scope Summary Settlement Confidential - FOIA Exempt

Parameter

Bank Length

^ H Bank Area

Bank Soil Volume

Extent of Removal

2.1 miles

7.1 acres

11,200 cy

Floodplain Area

Floodplain Volume

Sediment Volume

TOTALVOLUME

0.9 acres

780 cy

2,290 cy

14,270 cy

0 ARCADIS

TSCA Disposal Requirements Settlement Confidential - FOIA Exempt

ppl ica t ion of Fox River Protocol - Depth-weighted average PCB concentra

removal - Evaluated on basis of removal segments - Combined results from samples collected by ARCA

when both present in a removal segment

' T h

J u ^ /z

/ , X

No mater ials require TSCA d isposa l - Five removal segments contained either sediment or soils with I maximum PCB concentration > 50 mg/kg PCB p Depth-weighted average PCB concentrations over removal depths I in these five removal segments range from 34.6 to 42.5 mg/kg

u

^ 7^X>:=*-,?-

fZ-Oc: ^k ctj^ / Ac'£

(Sk ARCADIS


Removal Segments with Max PCB > 50 mg/kg LEGEND: SOIL SAMPLE LOCATION MAXIMUM PCB RESULT (ppm):

< 1 % 1 - < 5

• 5-<15 15-<25

• 25 - < 50 • >50

' ve^^^^ l^^^^^^^H ^ STRUCTUREl^^^^^B^^^^H

SEDIMENT SAMPLE LOCATION MAXIMUM PCB RESULT (ppm):

• < 1 1 -<5

5-< 15 15-<25

25 - < 50

>50

I^BB ^^^^^^^^^^^^^^^^^^1

TOPOGRAPHY/BATHYMETRY CONTOUR - 0 5 FT INTERVAL

1 1 SHORELINE (APPROXIMATE)

• • BANKAND SEDIMENT REMOVALAREA m SEDIMENT REMOVALAREA

H POTENTIAL ADDITIONAL BANKAND SEDIMENT REMOVALAREA BASED ON MDEQ DATA m FLOODPLAIN REMOVALAREA

f ~ ~ l POTENTIAL TSCAAREA

HHUMHI^ IHUH ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^1

^ . i • < ,

aCHTiDIVERSiON TstraxTURE

- V

r//" '

(3l ARCADIS

y ^ [ •' m

lt^_Fr.Tn„r|;


TSCA Disposal Evaluation According to Fox River Protocol

-'rf'*^'..,?;:"t^

Locat ion

P2FP-053

P2RT-6-2

P2BN-23

P2BN-24

P2BN-26

^y;^ ^ ,-,:

• • • • • I MDEQ

Sample ID

N/A

N/A

PSD-36 and PSD-37

PSD-36 and PSD-37

PSL-40

" . .VI .., • '.„„

Removal Depth

12 inches

18 inches

12 inches

12 inches

24 inches

i

:. I ,;, . : - " . , • . . '

Sample Interval Top (In)

0 6

12 0 2 6

12 18 24 0 6 12 14 0 6

12 20

0

6

8

12

19

Bot tom

(in) 6 12 24 2 6 12 18 24 27 6 12 14 21 6

12 20 24

6

8

12

19

23

'wu>*. * "'-

Thickness

(in) 6 6

12 2 4 6 6

6 3 6 6 2 7 6 6 8 4

6

2

4

7

4

ARCADIS PCB

(mg/kg) 13J 60 J 0.92 43.4 100 22.6

0.086 0.086 0.054 0.88 0.27 0.27

ND (0.064 U) 1.1

0.46 J 0.13

ND (0.082 U)

7.6 J

8.4 J

8.4 J

45

45

MDEQ PCB

(mg/kg)

80 66 66

80 66

47

47

73

73

^ ^ ^ B ' m

,"«S';,.„\.:..:i..

Average PCB

(mg/kg

41 33 33

0.032 41 33

0.13 0.041

27

28

41

59

45

1 Non-TSCA | B > Not Included In calculatbn |

h ^ggjgj^g^

rii^lHiltoi Depth-

Weighted PCB

36.5

34.6

36.9

37.1

42.5

h

.. . , . t ) ' • " • ^ 1 * :'. . , ^

TSCA Determinat ion

Non-TSCA

Non-TSCA

Non-TSCA

Non-TSCA

Non-TSCA

^ / ' ^ - • ^ ' , -

• H H S H B

j ^ ^ ^ ^ ^ ^ ^ ^ ^ H

^ ^ ^ ^ M

( S I ARCADIS 10