AECOM Environment

January 2010

Appendix C Soil Exposure Point Concentration Calculations

RISK AREA 1 (Orphan Line)Statistical Summary of Arsenic Soil Data

Surficial Soil (0 to 6 inches bgs)MBTA - Readville 5 Yard Site, Dedham, MA.

West Milton Street Fence LineTotal Arsenic

Sample ID (mg/kg)IRA Soil Sampling, WSE April/May 2002Zone 1 - 200 feet 56Zone 1 - 250 feet 81Zone 1 - 500 feet 11Zone 1 - 600 feet 36Zone 1 - 900 feet (Soil Excavated from this area) 16Zone 1 - 1300 feet 21Zone 1 - 1350 feet 24Zone 1 - 1600 feet 51Zone 1 - 2450 feet 82Zone 1 - 2700 feet (Soil Excavated from this area) 47Zone 1 - 2750 feet/Zone 1 2750 Duplicate 30Zone 1 - 2800 feet 14

Statistical SummaryNo. of Samples 12

12Frequency of Detection 100%Minimum Concentration 11Maximum Concentration 82Average Concentration 39Standard Deviation 25

MassDEP Urban Background (Fill Soil) 20Max. Concentration Above Urban Background? YesDEP IH Threshold Concentration 87Max Concentration Above DEP IH Threshold Concentration? NoUCLs Exceeded? No

Notes:mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).Bold/Shade= concentration indicates value exceeds DEP IH Threshold ConcentrationUCL = Upper Confidence Limit.

No. of Detects

APPENDIX C-1TABLE 1

C-1 Risk Area 1 - Revised Final.xlsx/Table 1

Tot

al L

ead

(1)

(mg/

kg)

(ft f

rom

bri

dge)

Pb 1

ft S

of t

rack

Pb 1

ft N

of t

rack

Loc

atio

n1

ft6

ftL

ocat

ion

1 ft

6 ft

IRA

Soi

l Sam

plin

g, W

SE A

pril/

May

200

20

347

556

100

171

416

1700

204

316

Zone

1 -

200

feet

540

100

131

173

150

206

462

1750

421

307

Zone

1 -

250

feet

560

200

116

128

200

516

496

1800

267

618

Zone

1 -

500

feet

180

300

248

146

250

343

773

1850

376

200

Zone

1 -

600

feet

190

400

192

164

300

499

353

1900

247

127

Zon

e 1

- 900

feet

(Soi

l Exc

avat

ed fr

om th

is a

rea)

1,24

7*50

020

410

435

017

216

719

5036

236

9Zo

ne 1

- 13

00 fe

et92

760

025

315

440

085

611

320

0019

324

0Zo

ne 1

- 13

50 fe

et25

070

022

814

745

085

9020

5017

121

8Zo

ne 1

- 16

00 fe

et20

080

017

320

350

053

438

121

0045

187

Zone

1 -

2450

feet

150

900

130

183

550

235

243

2150

187

378

Zon

e 1

- 270

0 fe

et(S

oil E

xcav

ated

from

this

are

a)3,

400*

1000

132

172

600

226

398

2200

158

185

Zone

1 -

2750

feet

/Zon

e 1

2750

Dup

licat

e44

011

0011

620

665

029

186

2250

346

323

Zone

1 -

2800

feet

300

1200

133

108

700

245

484

2300

187

328

1300

113

280

750

657

510

2350

162

154

IRA

Exc

avat

ion

Con

firm

ator

y Sa

mpl

ing,

WSE

, Jun

e, 2

002 (3

) :14

0020

623

780

022

810

724

0047

81Zo

ne 1

-900

feet

(Ave

rage

of s

ide-

wal

l, pi

t bot

tom

and

dup

sam

ple s

368

1500

106

208

850

348

239

2450

169

122

Zone

1 -

2700

feet

(Ave

rage

of s

ide-

wal

l, pi

t bot

tom

and

dup

sam

p l73

1600

372

386

900

496

1008

2500

254

354

1700

136

163

950

355

238

2550

286

440

1800

135

156

1000

209

308

2600

477

704

LFR

XR

F D

ata,

Nov

embe

r-D

ecem

ber

2005

1900

209

183

1050

152

258

2650

528

219

<28.

6520

0024

316

611

0018

132

427

0032

5812

8623

121

0040

313

911

5038

039

027

5076

425

9<3

1.65

2200

419

9612

0021

811

128

0028

325

8323

0046

920

012

5046

231

228

5041

747

024

0036

114

213

0028

314

129

0025

631

925

0047

416

213

5036

3092

229

5023

618

326

0041

521

114

0031

133

930

0037

319

227

0036

524

514

5030

941

520

5023

045

2800

486

130

1500

156

299

3100

9032

2900

567

201

1550

354

101

3000

199

259

1600

187

270

End

of l

ine

168

1650

201

202

Not

es:

mg/

kg =

mill

igra

ms p

er k

ilogr

am, w

hich

is e

quiv

alen

t to

parts

per

mill

ion

(ppm

).

* =

Ast

risk

indi

cate

s tha

t the

soil

repr

esen

ted

by th

e sa

mpl

e ha

s bee

n re

mov

ed fr

om th

e Si

te.

UC

L =

Upp

er C

onfid

ence

Lim

it.St

atis

tics

Num

ber o

f Sam

ples

200

Min

imum

Con

cent

ratio

n32

Max

imum

Con

cent

ratio

n3,

630

Ave

rage

327

95th

Per

cent

ile71

3St

anda

rd D

evia

tion

399

t-val

ue1.

972

95%

Con

fiden

ce L

imit

5695

% U

CL

on th

e M

ean

383

APP

EN

IDX

C-1

TA

BL

E 2

RIS

K A

RE

A 1

(Wes

t Milt

on S

tree

t Fen

ce L

ine

and

Orp

han

Lin

e)St

atis

tical

Sum

mar

y of

Lea

d D

ata

Sam

ple

ID

Surf

icia

l Soi

l (0

to 6

inch

es b

gs)

MB

TA

- R

eadv

ille

5 Y

ard

Site

, Ded

ham

, MA

. DE

P's X

RF

Scre

enin

g D

ata

Orp

han

Lin

eW

est M

ilton

Str

eet F

ence

Lin

e

333

(0-6

")44

1 (0

-6")

387

(0-6

")

C-1

Ris

k A

rea

1 - R

evis

ed F

inal

.xls

x/Ta

ble

2

APP

EN

DIX

C-1

TA

BL

E 3

RIS

K A

RE

A 1

(OR

PHA

N L

INE

)Sh

allo

w S

ubsu

rfac

e So

il D

ata

- Fill

(0 to

3 fe

et)

MB

TA

Rea

dvill

e 5

Yar

d, R

eadv

ille,

MA

.

Sum

mar

y St

atis

tics

Ana

lyte

Uni

ts0

to 1

2 to

2.5

0 to

12

to 3

0 to

11.

5 to

20

to 1

2 to

30

to 1

2 to

2.5

Min

Max

Mea

n95

th P

erce

ntile

Soil

Typ

eFi

llFi

llFi

llFi

llFi

llFi

llFi

llFi

llFi

llFi

ll

Tot

al M

etal

sA

rsen

icm

g/kg

2913

6.2

3.4

204.

28.

52.

48.

43.

4-

--

--

--

-20

Yes

1Y

esC

obal

tm

g/kg

3.7

3.9

5.1

35

4.8

4.7

44.

44.

810

1010

0%3

5.1

4.3

4.8

5.1

4Y

es6

Yes

Lead

mg/

kg59

2069

8.4

9811

505.

668

11-

--

--

--

-60

0Y

es0

Yes

EPH

C9-

C18

Alip

hatic

s, U

nadj

uste

dm

g/kg

5.2

5.3

5.25

5.8

6.15

5.2

5.5

5.15

5.2

5.15

100

0%N

DN

DN

DN

DN

DN

A-

-N

oC

19-C

36 A

lipha

tics,

Una

djus

ted

mg/

kg32

.912

.918

.65.8

34.3

5.2

5.5

34.5

14.9

5.15

106

60%

12.9

34.5

1726

34.4

NA

--

Yes

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kg13

131

.722

276

.499

.755

.25.5

91.9

43.8

13.6

109

90%

13.6

222

7712

318

1.1

NA

--

No

C11

-C22

Aro

mat

ics,

Adj

uste

dm

g/kg

112

30.5

158

62.3

79.7

44.5

5.5

69.4

43.2

13.6

109

90%

13.6

158

6295

137.

3N

A-

-Y

es

Non

C-P

AH

s (m

g/kg

-dry

)N

apht

hale

nem

g/kg

0.261

0.266

0.263

0.291

0.309

0.261

0.275

0.258

0.261

0.258

100

0%N

DN

DN

DN

DN

D1

No

0N

o2-

met

hyln

apht

hale

nem

g/kg

0.261

0.266

0.263

0.291

0.309

0.261

0.275

0.258

0.261

0.258

100

0%N

DN

DN

DN

DN

D1

No

0N

oA

cena

phth

ylen

em

g/kg

0.261

0.266

1.37

0.291

0.309

0.261

0.275

0.258

0.261

0.258

101

10%

1.37

1.37

0.38

0.6

0.9

1Y

es1

Yes

Ace

naph

then

em

g/kg

0.261

0.266

0.263

0.291

0.309

0.261

0.275

0.258

0.261

0.258

100

0%N

DN

DN

DN

DN

D2

No

0N

oA

nthr

acen

em

g/kg

0.261

0.266

1.30

0.291

0.309

0.261

0.275

0.258

0.261

0.258

101

10%

1.30

1.30

0.37

0.6

0.9

4N

o0

No

Fluo

rene

mg/

kg0.261

0.266

0.263

0.291

0.309

0.261

0.275

0.258

0.261

0.258

100

0%N

DN

DN

DN

DN

D2

No

0N

oPh

enan

thre

nem

g/kg

1.4

0.266

6.45

1.32

0.72

30.261

0.275

1.66

0.261

0.258

105

50%

0.72

36.

451.

292.

64.

320

No

0N

oFl

uora

nthe

nem

g/kg

2.95

0.61

111

.73.

13.

431.

70.275

4.45

0.261

0.258

107

70%

0.61

111

.72.

875.

38.

410

Yes

1Y

esPy

rene

mg/

kg2.

740.266

6.66

1.94

2.3

1.24

0.275

3.48

0.261

0.258

106

60%

1.24

6.66

1.94

3.4

5.2

20N

o0

No

Ben

zo(g

,h,i)

pery

lene

mg/

kg1.

040.266

1.93

0.291

1.34

0.73

10.275

1.16

0.261

0.258

105

50%

0.73

11.

930.

761.

21.

73

No

0N

o

C-P

AH

s (m

g/kg

-dry

)B

enzo

(a)a

nthr

acen

em

g/kg

1.31

0.266

6.12

1.47

1.64

0.90

30.275

1.63

0.261

0.258

106

60%

0.90

36.

121.

42.

74.

19

No

0N

oC

hrys

ene

mg/

kg2.

180.266

6.02

1.49

2.04

1.19

0.275

2.19

0.261

0.258

106

60%

1.19

6.02

01.

62.

94.

37

No

0N

oB

enzo

(b)f

luor

anth

ene

mg/

kg2.

450.

537

4.92

1.23

2.16

1.15

0.275

1.93

0.261

0.258

107

70%

0.53

74.

920

1.5

2.6

3.8

8N

o0

No

Ben

zo(k

)flu

oran

then

em

g/kg

2.47

0.266

8.00

1.89

3.02

1.66

0.275

2.9

0.261

0.258

106

60%

1.66

8.00

02.

13.

85.

84

Yes

1Y

esB

enzo

(a)p

yren

em

g/kg

1.16

0.266

4.43

1.06

1.26

0.85

30.275

1.22

0.261

0.258

106

60%

0.85

34.

430

1.1

2.0

3.0

7N

o0

No

Inde

no(1

,2,3

-cd)

Pyre

nem

g/kg

1.22

0.266

2.83

0.67

31.

10.

647

0.275

0.94

20.261

0.258

106

60%

0.64

72.

830

0.8

1.4

2.1

3N

o0

No

Dib

enzo

(a,h

)ant

hrac

ene

mg/

kg0.261

0.266

1.94

0.291

0.96

20.

676

0.275

0.93

40.261

0.258

104

40%

0.67

61.

940

0.6

1.0

1.5

1Y

es1

Yes

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

H =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.

Mas

sDE

P U

rban

B

ackg

roun

dC

once

ntra

tion

(Fill

So

il C

onta

inin

g A

sh)

Ret

aine

dA

s CO

C?

WSE

,Pha

se II

Dat

a

OL

/SS-

1O

L/S

S-5

OL

/SS-

4O

L/S

S-3

OL

/SS-

2Fr

eque

ncy

of

Det

ectio

nN

o. o

f Sa

mpl

esN

o. o

f D

etec

ts

Num

ber

Sam

ples

A

bove

Urb

an

Bac

kgro

und

Upp

er 9

5%

UC

L o

f Mea

n

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

C-1

Ris

k A

rea

1 - R

evis

ed F

inal

.xls

x/Ta

ble

3

Tot

al L

ead

(mg/

kg)

(ft f

rom

bri

dge)

Pb 1

ft S

of t

rack

Pb 1

ft N

of t

rack

Loc

atio

n1

ft6

ftL

ocat

ion

1 ft

6 ft

IRA

Soi

l Sam

plin

g, W

SE A

pril/

May

200

20

347

556

100

171

416

1700

204

316

Zone

1 -

200

feet

540

100

131

173

150

206

462

1750

421

307

Zone

1 -

250

feet

560

200

116

128

200

516

496

1800

267

618

Zone

1 -

500

feet

180

300

248

146

250

343

773

1850

376

200

Zone

1 -

600

feet

190

400

192

164

300

499

353

1900

247

127

Zon

e 1

- 900

feet

(Soi

l Exc

avat

ed fr

om th

is a

rea)

1247

*50

020

410

435

017

216

719

5036

236

9Zo

ne 1

- 13

00 fe

et92

760

025

315

440

085

611

320

0019

324

0Zo

ne 1

- 13

50 fe

et25

070

022

814

745

085

9020

5017

121

8Zo

ne 1

- 16

00 fe

et20

080

017

320

350

053

438

121

0045

187

Zone

1 -

2450

feet

150

900

130

183

550

235

243

2150

187

378

Zon

e 1

- 270

0 fe

et(S

oil E

xcav

ated

from

this

are

a)34

00*

1000

132

172

600

226

398

2200

158

185

Zone

1 -

2750

feet

/Zon

e 1

2750

Dup

licat

e44

011

0011

620

665

029

186

2250

346

323

Zone

1 -

2800

feet

300

1200

133

108

700

245

484

2300

187

328

1300

113

280

750

657

510

2350

162

154

IRA

Exc

avat

ion

Con

firm

ator

y Sa

mpl

ing,

WSE

, Jun

e, 2

002:

1400

206

237

800

228

107

2400

4781

Zone

1 -9

00 fe

et (A

vera

ge o

f sid

e-w

all,

pit b

otto

m a

nd d

up sa

mpl

e s36

815

0010

620

885

034

823

924

5016

912

2Zo

ne 1

- 27

00 fe

et (A

vera

ge o

f sid

e-w

all,

pit b

otto

m a

nd d

up sa

mpl

7316

0037

238

690

049

610

0825

0025

435

417

0013

616

395

035

523

825

5028

644

0W

SE, P

hase

II S

ampl

es, 2

002

1800

135

156

1000

209

308

2600

477

704

OL/

SS-1

(0 to

1 fo

ot)

5919

0020

918

310

5015

225

826

5052

821

9O

L/SS

-1 (2

to 2

.5 fo

ot)

2020

0024

316

611

0018

132

427

0032

5812

86O

L/SS

-2 (0

to 1

foot

)69

2100

403

139

1150

380

390

2750

764

259

OL/

SS-2

(2 to

3 fo

ot)

8.4

2200

419

9612

0021

811

128

0028

325

83O

L/SS

-3 (0

to 1

foot

)98

2300

469

200

1250

462

312

2850

417

470

OL/

SS-3

(1.5

to 2

foot

)11

2400

361

142

1300

283

141

2900

256

319

OL/

SS-4

(0 to

1 fo

ot)

5025

0047

416

213

5036

3092

229

5023

618

3O

L/SS

-4 (2

to 3

foot

)5.

626

0041

521

114

0031

133

930

0037

319

2O

L/SS

-5 (0

to 1

foot

)68

2700

365

245

1450

309

415

2050

230

45O

L/SS

-5 (2

to 2

.5 fo

ot)

1128

0048

613

015

0015

629

931

0090

3229

0056

720

115

5035

410

130

0019

925

916

0018

727

0E

nd o

f lin

e16

816

5020

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APPENDIX C-1

Total Arsenic Risk Area Sample ID (mg/kg)Milton St. IRA Soil Sampling, WSE April/May 2002

Zone 1 - 200 feet 56Zone 1 - 250 feet 81Zone 1 - 500 feet 11Zone 1 - 600 feet 36

(Soil Excavated) Zone 1 - 900 feet 16Zone 1 - 1300 feet 21Zone 1 - 1350 feet 24Zone 1 - 1600 feet 51Zone 1 - 2450 feet 82

(Soil Excavated) Zone 1 - 2700 feet 47(Includes Dup) Zone 1 - 2750 feet 30

Zone 1 - 2800 feet 14

Orphan Line WSE, Phase II Samples, 2002OL/SS-1 (0 to 1 foot) 29OL/SS-1 (2 to 2.5 foot) 13OL/SS-2 (0 to 1 foot) 6OL/SS-2 (2 to 3 foot) 3.4OL/SS-3 (0 to 1 foot) 20OL/SS-3 (1.5 to 2 foot) 4.2OL/SS-4 (0 to 1 foot) 8.5OL/SS-4 (2 to 3 foot) 2.4OL/SS-5 (0 to 1 foot) 8.4OL/SS-5 (2 to 2.5 foot) 3.4

No. of Samples 22Min 2Max 82Average 2695th Percentile 80Standard Deviation 24t-value 2.08095% Confidence Interval 1195% UCL of the Mean 36

Notes:mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).* = Astrisk indicates that the soil represented by the sample has been removed from the Site.UCL = Upper Confidence Limit.

MBTA - Readville 5 Yard Site, Dedham, MA.

TABLE 5RISK AREA 1 (West Milton Street Fence and Orphan Line)

Statistical Summary of Arsenic DataSurficial Soil (0 to 3 feet bgs)

C-1 Risk Area 1 - Revised Final.xlsx/Table 5

RISK AREA 2 - ASHCROFT STREET FENCE LINEStatistical Summary of Arsenic and Lead Data

Surficial Soil (0 to 6 inches bgs) and Shallow Soil (18" bgs)MBTA - Readville 5 Yard Site, Dedham, MA.

Total Lead Total Arsenic Surficial Soil (0 to 6" bgs) Surficial Soil (0 to 6" bgs) Shallow Soil (18" bgs)

IRA Soil Sampling, WSE April/May 2002(1):Zone 2 - 200 feet 293 183 -Zone 2 - 300 feet 233 123 -Dup 2 (Zone 2-300 feet) 227 123 -Zone 2 - 400 feet 440 117 -Zone 2 - 500 feet 590 147 -

IRA Soil Sampling, WSE May 2002:- 78 -- 72 -- 150 -- 210 -- 130 -- 77 -- - 38- 210- - 30- - 67- 130 -- 140 -- 52 -- 66 -- 97 -- 16 -- 330 -- 100 -- 26 -- 25 -- - 9.8- 27 -- - 3.6- 31 -- 210 -- 25 -- 6.8 -- 43 -- - 7.5- 12 -- - 1.7- 8.0 -- 50 -- 56 -- 9.0 -- 9 -- - 69- 12 -- 8.1 -- - 16- 5.6 -

Statistical SummaryNo. of Samples 5 37 9No. of Detects 5 37 9Frequency of Detection 100% 100% 100%Minimum Concentration 227 5.6 1.7Maximum Concentration 590 330 69Average Concentration 357 84 27Standard Deviation 156 76 26

2.776 2.028 2.30695% Confidence Interval 194 25 20Upper 95% UCL on the Mean 551 110 47

MassDEP Urban Background (Fill Soil) 600 20 20CA/T 95th Percentile Urban Background 1,100 21 21Max. Concentration Above Background? No Yes Yes

Notes:

mg/kg = milligrams per kilograms, which is equivalent to parts per million (ppm).

(1) Total lead and arsenic concentrations based on single detected concentration or average concentration of multiple analyses by EPA Method 6010B as reported in July 2002 IRA Status Report.

Z2/400/5/20"Z2/375/10/6"

DUP-2 (Z2/525/10/6")

Z2/475/10/6"

Z2/500/10/18"Z2/500/15/6"Z2/500/10/6"Z2/500/4/18"

Z2/325/10/6"Z2/300/15/6"

Z2400/15/6"

Z2/450/15/6"Z2/450/10/6"Z2/425/10/6"

Z2/350/15/6"Z2/350/10/6"

Z2/400/10/18"Z2/400/10/6"

Z2/250/15/6"

Z2/231/10/6"DUP-3 (Z2/250/10/6")

Z2/200/17/6"

Z2/300/10/18"Z2/300/10/6"Z2/300/4/18"Z2/275/10/6"

Z2/175/5/6"Z2/150/15/6"

T-value

Z2/50/10/6"

Z2/150/10/6"Z2/125/10/6"Z2/100/15/6"

Z2/100/10/6"DUP-5 (Z2/100/10/18")

Z2/50/15/6"

APPENDIX C-2TABLE 1

Z2/25/10/6"Z2/0/15/6"Z2/0/10/6"

Sample ID

Z2/100/4/18"Z2/75/10/6"

Z2/200/5/6"

C-2 Risk Area 2 - Final.xls/Table 1

RISK AREA 2 - ASHCROFT STREET FENCE LINEStatistical Summary of Lead Data - Surafce Soil (0 to 6 inches)

MBTA - Readville 5 Yard Site, Dedham, MA.

Total LeadSurficial Soil (0 to 6" bgs)

IRA Soil Sampling, WSE April/May 2002(1):Zone 2 - 200 feet 293Zone 2 - 300 feet 233Dup 2 (Zone 2-300 feet) 227Zone 2 - 400 feet 440Zone 2 - 500 feet 590

MassDEP Lead XRF data - 6 feet0 83

50 402100 168150 134

MassDEP XRF Lead data - 1 ft0 334

100 296150 170

MassDEP XRF Lead data - 4 ft0 443

50 153100 225150 263

MassDEP XRF Lead data - 14 ft200 111250 23300 209350 271400 451450 499500 602550 875600 57650 531700 150

MassDEP XRF Lead data - 19 ft200 66250 138300 307350 195400 360450 609500 165550 742600 465650 458700 107

MassDEP XRF Lead data - 24 ft250 272

Statistical SummaryNo. of Samples 39No. of Detects 39Frequency of Detection 100%Minimum Concentration 23Maximum Concentration 875Average Concentration 311Standard Deviation 200

2.02495% Confidence Interval 65Upper 95% UCL on the Mean 375

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? Yes

Notes:

mg/kg = milligrams per kilograms, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

concentration of multiple analyses by EPA Method 6010B as reported in July 2002 IRA Status Report.

APPENDIX C-2

Sample ID

TABLE 2

T-value

C-2 Risk Area 2 - Final.xls/Table 2

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)PHASE, WSE, June 2002BL/SS-4/0-6" 130BL/SS-5/0-6" 2,900BL/SS-6/0-6" 1,000BL/SS-7/0-6" 280BL/SS-8/0-6" 36

IRA, Rizzo, October 2000SS21 Readville 82SS23 Readville 1,300SS28 Readville 910SS29 Readville 4,000SS30 Readville 1,200SS31 Readville 4,600SS32 Readville 4,800SS33 Readville 3,000SS34 Readville 1,500SS35 Readville 3,200SS36 Readville 5,500SS37 Readville 1,900SS38 Readville 2,300SS39 Readville 5,600SS40 Readville 2,300SS41 Readville 4,000SS42 Readville 1,900SS43 Readville 1,600SS44 Readville 1,300SS45 Readville 480SS46 Readville 500SS47 Readville 340SS48 Readville 4,900

MassDEP XRF Lead dataRow C 0 253Row C 50 357Row C 100 231Row C 150 161Row C 200 235Row C 250 377Row C 300 303Row C 350 326Row C 400 240Row C 450 339Row C 500 239Row C 550 305

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 1 of 7

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)Row C 600 291Row C 650 331Row C 700 366Row C 750 254Row C 800 423Row C 850 365Row C 950 487Row C 1000 378Row C 1050 324Row C 1100 311Row C 1150 416Row C 1200 213Row C 1250 248Row C 1300 190Row C 1350 259Row C 1400 249Row C 1450 238Row C 1500 348Row C 1550 228Row C 1600 330Row C 1650 285Row C 1750 484Row C 1800 252Row C 1850 347Row C 1900 1,206Row C 1950 367Row C 2000 246Row C 2050 335Row C 2100 265Row C 2150 398Row C 2200 364Row C 2250 210Row C 2300 324Row DE 50 130Row DE 100 283Row DE 150 187Row DE 200 297Row DE 300 490Row DE 400 818Row DE 500 718Row DE 600 309Row DE 700 267Row DE 800 212Row DE 900 260

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 2 of 7

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)Row DE 1000 392Row DE 1100 365Row DE 1200 287Row DE 1300 232Row DE 1400 311Row DE 1500 254Row DE 1600 253Row DE 1700 411Row DE 1800 212Row DE 1900 334Row DE 2000 388Row DE 2100 370Row DE 2200 449Row DE 2300 201Row FG 800 568Row FG 900 785Row FG 1000 377Row FG 1100 321Row FG 1200 519Row FG 1300 841Row FG 1400 990Row FG 1500 619Row FG 1600 500Row FG 1700 7,600Row FG 1800 3,983Row FG 1900 848Row FG 2000 832Row HI 800 338Row HI 900 467Row HI 1000 925Row HI 1100 1,060Row HI 1200 835Row HI 1300 1,416Row HI 1400 1,980Row HI 1500 1,646Row HI 1600 2,270Row HI 1700 1,990Row HI 1800 2,273Row HI 1900 2,016Row HI 2000 2,266Row HI 2100 1,013Row HI 2200 1,263Row HI 2300 2,946

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 3 of 7

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)Row JK 1000 378Row JK 1100 748Row JK 1200 1,630Row JK 1300 442Row JK 1400 1,420Row JK 1500 2,043Row JK 1600 1,173Row JK 1700 1,470Row JK 1800 783Row JK 1900 805Row JK 2000 1,396Row JK 2100 911Row JK 2200 276Row JK 2300 2,463Row LM 1300 116Row LM 1400 102Row LM 1500 540Row LM 1600 990Row LM 1700 414Row LM 1800 437Row LM 1900 261Row LM 2000 425Row LM 2100 427Row LM 2200 551Row LM 2300 459Row NO 1600 343Row NO 1700 323Row NO 1800 143Row NO 1900 245Row NO 2000 545Row NO 2100 376Row NO 2200 460Row NO 2300 520Row PQ 2000 258Row PQ 2100 204Row PQ 2200 284Row PQ 2300 357Row RS 2200 51Row RS 2300 113

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 4 of 7

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)LFR XRF Data, November-December 2005105 1779.2*215 1189.6247 932.8259 763.6264 1069.6268 1360324 2228.8*355 1779.2356 1289.6357 789.2358 1229.6360 841.6361 320.6362 268.8370 1929.6375 1580*386 551.6411 1129.6412 1769.6413 320.4414 372415 269416 1229.6417 3219.2418 132.6423 167.9467 1120*468 443.6469 796.4470 975.2471 890.4472 1160473 1520*474 1149.6476 194.2485 1229.6493 <26.25523 398524 536525 586.8526 941.6527 1200528 1489.6532 654.4

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 5 of 7

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)579 496.8580 702.8581 1529.6582 912.8583 568.8584 1809.6585 2979.2593 896597 <26.7601 657.2636 960638 2129.6640 1049.6641 2579.2694 282.4696 <30.45748 62749 110750 422751 297752 346753 <37.2761 <37.2805 <29.7806 <36.45807 <34.35808 <35.1809 <31.8814 <33.75861 30.6862 <30.6863 <24864 <32.7917 36.5918 38919 <35.4920 <25.95973 35.7974 <36.15975 369.4

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 6 of 7

APPENDIX C-3TABLE 1

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary Metals - Lead Only Surficial Soil (0 to 6 inches) - All data sources

WSE Phase II 2000 Lab Data, Rizzo October 2000 IH Lab Data, MassDEP 2002 XRF Data, LFR 2005 (Lab and XRF Data) and Earth Tech June 2008 (Lab and XRF Data)

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)LFR Laboratory Data, November-December 2005105 3,110247 530*248 533324 2,240355 1090*375 1,640417 3020*467 1,580473 3,180975 352*

Earth Tech XRF Data, June 2008247 (0-0.5) 193355 (0-0.5) 3,990418 (0-0.5) 487473 (0-0.5) 2,206636 (0-0.5) 973640 (0-0.5) 917

Summary Statistics:No. of Samples 267No. of Detects 250Frequency of Detection 94%Minimum Concentration 31Maxiumum Concentration 7,600Average Concentration 892Standard Deviation 1,098t-value 1.96995% Confidence Interval 13295% UCL on the Mean 1,024

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? YesUCLs Exceeded? Yes

Notes:* - Duplicate sample analyzed by XRF and laboratory. Higher detected result of the duplicate analyses used in the summary statistics. Asterisk placed on result not used.mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

C-3 Risk Area 3 - Revised Final.xlsx/Table 1 Page 7 of 7

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)PHASE II, WSE, June 2002BL/SS-4/0-6" 130BL/SS-5/0-6" 2,900BL/SS-6/0-6" 1,000BL/SS-7/0-6" 280BL/SS-8/0-6" 36

PHASE II, WSE, June 2002SA/GP-39 (0-2 feet) 600DDHA/-1(0 to 1 foot) 5,400DD/HA-2 (0 to 1.5 feet) 160DD/HA-3 (0 to 1.5 feet) 54DD/HA-4 (0 to 1.5 feet) 140SA/GP-17 (2 to 4 feet) 4.5SA/GP-40 (2 to 4 feet) 8.2HB/GP-26 (2 to 4 feet) 350CL/GP-20 (2 to 4 feet) 3,800CL/GP-21(2 to 4 feet) 1,300CL/GP-22 (2 to 4 feet) 33

IRA, Rizzo, October 2000SS21 Readville 82SS23 Readville 1,300SS28 Readville 910SS29 Readville 4,000SS30 Readville 1,200SS31 Readville 4,600SS32 Readville 4,800SS33 Readville 3,000SS34 Readville 1,500SS35 Readville 3,200SS36 Readville 5,500SS37 Readville 1,900SS38 Readville 2,300SS39 Readville 5,600SS40 Readville 2,300SS41 Readville 4,000SS42 Readville 1,900

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 1 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

SS43 Readville 1,600SS44 Readville 1,300SS45 Readville 480SS46 Readville 500SS47 Readville 340SS48 Readville 4,900

MassDEP XRF Lead dataRow C 0 253Row C 50 357Row C 100 231Row C 150 161Row C 200 235Row C 250 377Row C 300 303Row C 350 326Row C 400 240Row C 450 339Row C 500 239Row C 550 305Row C 600 291Row C 650 331Row C 700 366Row C 750 254Row C 800 423Row C 850 365Row C 950 487Row C 1000 378Row C 1050 324Row C 1100 311Row C 1150 416Row C 1200 213Row C 1250 248Row C 1300 190Row C 1350 259Row C 1400 249Row C 1450 238Row C 1500 348

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 2 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row C 1550 228Row C 1600 330Row C 1650 285Row C 1750 484Row C 1800 252Row C 1850 347Row C 1900 1206Row C 1950 367Row C 2000 246Row C 2050 335Row C 2100 265Row C 2150 398Row C 2200 364Row C 2250 210Row C 2300 324Row DE 50 130Row DE 100 283Row DE 150 187Row DE 200 297Row DE 300 490Row DE 400 818Row DE 500 718Row DE 600 309Row DE 700 267Row DE 800 212Row DE 900 260Row DE 1000 392Row DE 1100 365Row DE 1200 287Row DE 1300 232Row DE 1400 311Row DE 1500 254Row DE 1600 253Row DE 1700 411Row DE 1800 212Row DE 1900 334Row DE 2000 388Row DE 2100 370Row DE 2200 449Row DE 2300 201Row FG 800 568Row FG 900 785Row FG 1000 377Row FG 1100 321Row FG 1200 519

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 3 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)Row FG 1300 841Row FG 1400 990Row FG 1500 619Row FG 1600 500Row FG 1700 7600Row FG 1800 3983Row FG 1900 848Row FG 2000 832Row HI 800 338Row HI 900 467Row HI 1000 925Row HI 1100 1060Row HI 1200 835Row HI 1300 1416Row HI 1400 1980Row HI 1500 1646Row HI 1600 2270Row HI 1700 1990Row HI 1800 2273Row HI 1900 2016Row HI 2000 2266Row HI 2100 1013Row HI 2200 1263Row HI 2300 2946Row JK 1000 378Row JK 1100 748Row JK 1200 1630Row JK 1300 442Row JK 1400 1420Row JK 1500 2043Row JK 1600 1173Row JK 1700 1470Row JK 1800 783Row JK 1900 805Row JK 2000 1396Row JK 2100 911Row JK 2200 276Row JK 2300 2463Row LM 1300 116Row LM 1400 102Row LM 1500 540Row LM 1600 990Row LM 1700 414Row LM 1800 437Row LM 1900 261Row LM 2000 425Row LM 2100 427

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 4 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)Row LM 2200 551Row LM 2300 459Row NO 1600 343Row NO 1700 323Row NO 1800 143Row NO 1900 245Row NO 2000 545Row NO 2100 376Row NO 2200 460Row NO 2300 520Row PQ 2000 258Row PQ 2100 204Row PQ 2200 284Row PQ 2300 357Row RS 2200 51Row RS 2300 113

LFR XRF Data, November-December 2005 1

105 113.7105 1779.2*215 43.7215 1189.6247 932.8247 <28.35259 347.6259 763.6264 38.6264 1069.6268 1360268 <33.9*324 28.5324 2228.8*355 1779.2355 <27356 1289.6356 <33357 789.2357 <35358 1229.6358 <32360 32.8360 841.6361 320.6361 <35362 268.8362 <29370 1929.6

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 5 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)370 <23.7375 84375 1580*386 161.5386 551.6411 34411 1129.6412 1769.6412 <33413 320.4413 <36414 372414 782.4415 269415 <32416 1229.6416 <34417 45.9417 3219.2418 132.6418 542.8423 167.9423 <31.8467 688467 1120*467 <33468 443.6468 <35469 796.4469 <36470 37470 975.2471 115.3471 890.4472 127.3472 1160473 43.8473 1520*474 55.5474 1149.6476 194.2476 <29.4485 104485 1229.6493 101.4493 <26.25523 398

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 6 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)523 401.4*524 536524 579.6525 83.4525 586.8526 44.6526 941.6527 1200527 <32528 697.6528 1489.6532 43.4532 654.4579 496.8579 980.8580 702.8580 843.2581 1109.6581 1529.6582 912.8582 981.6583 457.6583 568.8584 1809.6584 1859.2585 84.3585 2979.2593 53.6593 896597 88.7597 <26.7601 37.9601 657.2635 1300636 960636 2708.8638 2129.6638 4128640 1020640 1049.6641 2579.2641 6188.8694 282.4694 11596.8696 <30.45748 62748 5158.4

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 7 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)749 110749 1120750 422.4750 4358.4*751 297751 481.2752 31.9752 346753 437.2753 <37.2761 337.8761 <37.2805 70.7805 <29.7806 673.6806 <36.45807 <25.05807 <34.35808 <31.05808 <35.1809 523.2809 <31.8814 69.8814 <33.75861 30.6861 <22.8862 165.1862 <30.6863 <24863 <31.95864 842.4*864 <32.7917 36.5917 375.2918 38918 41.2919 198.1919 <35.4920 55.3920 <25.95973 35.1973 35.7974 <26.4974 <36.15975 369.4975 <25.65

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 8 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)LFR Laboratoy Data, November-December 2005105 3110247 530*248 533268 24.2324 2240355 1090*375 1640417 3020*467 1580473 3180523 460528 584*750 7590864 1550975 352*

Earth Tech XRF Data, June 2008247 (0-0.5) 193355 (0-0.5) 3990418 (0-0.5) 487473 (0-0.5) 2206636 (0-0.5) 973640 (0-0.5) 917247 (0.5-3.0) 15355 (0.5-3.0) 125418 (0.5-3.0) 56473 (0.5-3.0) 3440636 (0.5-3.0) 2392640 (0.5-3.0) 1040

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 9 of 10

APPENDIX C-3TABLE 2

RISK AREA 3 (MAIN RAIL YARD)Statistical Summary - Lead in Shallow Subusrafce Soil (0 to 3 feet) - All Data Sources

MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Summary Statistics:No. of Samples (excluding Rizzo SS22) 374No. of Detects 319Frequency of Detection 85%Minimum Concentration 5Maxiumum Concentration 11,597Average Concentration 852Standard Deviation 1,310t-value 1.96695% Confidence Interval 13395% UCL on the Mean 985

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? YesUCLs Exceeded? Yes

Notes:1. Note that two results in a given reference cell from the LFR XRF 2005 data are for depths of 0'-0.5' and 0.5'-3' below grade.* - Duplicate sample analyzed by XRF and laboratory. Higher detected result of the duplicate analyses used in the summary statistics. Asterisk placed on result not used.mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

C-3 Risk Area 3 - Revised Final.xlsx/Table 2 Page 10 of 10

APPENDIX C-3TABLE 3

Soil Statistical SummaryRISK AREA 3 (Main Yard area)

Deep Soil sampling (>3 feet) - LFR and Earth Tech DataMBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

LFR XRF Data, November-December 2005215 42.8259 178.7355 <35361 <33*413 <34414 <34472 405526 130.1579 980.8581 1819.2581 891.2584 77.7585 442.4635 595.6636 1600*638 7974.4640 730.8641 7776694 5427.2694 <23.4696 400.2*748 4588.8748 407749 449.3749 417.1750 592.7750 359.5753 330.4753 <29.85761 213.6917 46.8

LFR Laboratoy Data, November-December 2005361 (3-6') 2.89636 (8-11') 3350696 (3-8') 984

Earth Tech XRF Data, June 2008247 (3.0-6.0) 16418 (3.0-6.0) 25473 (3.0-6.0) 1118636 (3.0-6.0) 1371640 (3.0-6.0) 1153

C-3 Risk Area 3 - Revised Final.xlsx/Table 3 Page 1 of 2

APPENDIX C-3TABLE 3

Soil Statistical SummaryRISK AREA 3 (Main Yard area)

Deep Soil sampling (>3 feet) - LFR and Earth Tech DataMBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Summary Statistics:No. of Samples 39No. of Detects 31Frequency of Detection 79%Minimum Concentration 2.89Maxiumum Concentration 7,974Average Concentration 1,194Standard Deviation 2,053t-value 2.02495% Confidence Interval 66595% UCL on the Mean 1,859

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? YesUCL of 6,000 ppm Exceeded? Yes

Notes:* - Duplicate sample analyzed by XRF and laboratory. Higher detected result of the duplicate analyses used in the summary statistics. Asterisk placed on result not used.mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

C-3 Risk Area 3 - Revised Final.xlsx/Table 3 Page 2 of 2

APP

EN

DIX

C-3

TA

BL

E 4

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

y - M

etal

s, E

PH P

aram

eter

s and

PA

Hs i

n Su

rfac

e So

il (0

to 6

inch

es)

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

WSE

, 200

2 PH

ASE

II

BL

/SS-

4/0-

6"B

L/S

S-5/

0-6"

BL

/SS-

6/0-

6"B

L/S

S-7/

0-6"

BL

/SS-

8/0-

6"10

5 (K

-S1)

/0-6

"24

7-S1

/0-6

"24

7-S4

/0-6

"24

8-S1

/0-6

"32

4 (G

-S1)

/0-6

"35

5-S4

/0-6

"37

5 (F

-S1)

/0-6

"41

7-S1

/0-6

"46

7-S1

/0-6

"47

3-S1

/0-6

"97

5-S1

/0-6

"

Uni

ts29

-JU

L-0

229

-JU

L-0

229

-JU

L-0

229

-JU

L-0

229

-JU

L-0

213

-Dec

-05

23-N

ov-0

523

-Nov

-05

23-N

ov-0

513

-Dec

-05

28-N

ov-0

513

-Dec

-05

28-N

ov-0

529

-Nov

-05

28-N

ov-0

57-

Dec

-05

Tot

al M

etal

sA

ntim

ony

mg/

kg4.

339

89.

21.05

--

--

--

--

--

-A

rsen

icm

g/kg

6.6

3269

184.

815

.125

3.0

17.3

28.9

45.3

154

33.8

11.4

17.7

8.6

7.3

Bar

ium

mg/

kg22

420

170

3514

219

59.7

7186

225

335

142

466

133

301

117

Chr

omiu

mm

g/kg

1270

7916

1940

.917

.317

.519

.859

.010

.551

.661

.740

.546

.916

.3C

obal

tm

g/kg

46.

95.

14.

62.

6-

--

--

--

--

--

Cop

per

mg/

kg38

280

290

6829

--

--

--

--

--

-Le

adm

g/kg

--

--

--

--

--

--

--

--

Nic

kel

mg/

kg7.

815

1411

12-

--

--

--

--

--

Zinc

mg/

kg46

670

1,10

089

99-

--

--

--

--

--

EPH

C9-

C18

Alip

hatic

sm

g/kg

5.5

55.3

13.4

18.9

5.2

--

--

--

--

--

-C

19-C

36 A

lipha

tics

mg/

kg31

.525

757

.913

234

8-

--

--

--

--

--

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kg87

.925

810

421

633

4-

--

--

--

--

--

C11

-C22

Aro

mat

ics,

Adj

uste

dm

g/kg

8121

693

.317

833

0-

--

--

--

--

--

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

0.275

0.291

0.298

0.272

0.261

--

--

--

--

--

-2-

Met

hyln

apht

hale

nem

g/kg

0.275

0.94

50.298

0.272

0.261

--

--

--

--

--

-A

cena

phth

ylen

em

g/kg

0.275

0.291

0.298

0.73

30.261

--

--

--

--

--

-A

cena

pthe

nem

g/kg

0.275

0.291

0.298

0.272

0.261

--

--

--

--

--

-A

nthr

acen

em

g/kg

0.275

1.16

0.298

0.66

70.261

--

--

--

--

--

-Fl

uore

nem

g/kg

0.275

0.291

0.298

0.272

0.261

--

--

--

--

--

-Ph

enan

thre

nem

g/kg

0.275

5.42

0.75

33.

930.261

--

--

--

--

--

-Fl

uora

nthe

nem

g/kg

1.22

6.97

1.76

5.55

0.77

7-

--

--

--

--

--

Pyre

nem

g/kg

0.99

56.

351.

493.

930.

680

--

--

--

--

--

-B

enzo

(g,h

,i)pe

ryle

nem

g/kg

0.275

2.44

0.298

3.61

0.64

0-

--

--

--

--

--

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

0.64

92.

590.

966

2.47

0.261

--

--

--

--

--

-C

hrys

ene

mg/

kg1.

053.

421.

263.

130.

629

--

--

--

--

--

-B

enzo

(b)f

luor

anth

ene

mg/

kg1.

152.

961.

364.

410.

895

--

--

--

--

--

-B

enzo

(k)f

luor

anth

ene

mg/

kg1.

164.

841.

763.

940.

756

--

--

--

--

--

-B

enzo

(a)p

yren

em

g/kg

0.63

42.

550.

849

1.86

0.261

--

--

--

--

--

-In

deno

(1,2

,3-c

d)Py

rene

mg/

kg0.275

2.18

0.70

41.

460.261

--

--

--

--

--

-D

iben

zo(a

,h)a

nthr

acen

em

g/kg

0.275

0.88

60.298

1.42

0.261

--

--

--

--

--

-

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

LFR

, Dec

embe

r 20

05

Para

met

ers

C-3

Ris

k A

rea

3 - R

evis

ed F

inal

.xls

x/Ta

ble

4Pa

ge 1

of 2

Uni

tsT

otal

Met

als

Ant

imon

ym

g/kg

Ars

enic

mg/

kgB

ariu

mm

g/kg

Chr

omiu

mm

g/kg

Cob

alt

mg/

kgC

oppe

rm

g/kg

Lead

mg/

kgN

icke

lm

g/kg

Zinc

mg/

kg

EPH

C9-

C18

Alip

hatic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

napt

hene

mg/

kgA

nthr

acen

em

g/kg

Fluo

rene

mg/

kgPh

enan

thre

nem

g/kg

Fluo

rant

hene

mg/

kgPy

rene

mg/

kgB

enzo

(g,h

,i)pe

ryle

nem

g/kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-3

TA

BL

E 4

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

y - M

etal

s, E

PH P

aram

eter

s and

PA

Hs i

n Su

rfac

e So

il (0

to 6

inch

es)

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

Sum

mar

y St

atis

tics

Min

Max

Ave

rage

54

80%

4.3

3912

3133

7Y

es3

Yes

1616

100%

4.8

253

4581

179

20Y

es7

Yes

1616

100%

1446

617

625

143

250

Yes

13Y

es16

1610

0%12

7936

48.3

7240

Yes

8Y

es5

510

0%2.

67

56.

67

4Y

es3

Yes

55

100%

2929

014

130

528

820

0Y

es2

Yes

--

--

--

--

600

--

-5

510

0%7.

815

1215

.515

30N

o0

No

55

100%

4611

0040

198

210

1430

0Y

es2

Yes

53

60%

13.4

5520

4548

NA

--

Yes

56

120%

31.5

348

165

332

330

NA

--

Yes

56

120%

87.9

334

200

329

319

NA

--

-5

612

0%81

330

180

306

307

NA

--

Yes

50

0%N

DN

DN

DN

DN

D1

No

0N

o5

120

%0.

945

0.94

50.

410

0.8

0.8

1N

o0

No

51

20%

0.73

30.

733

0.37

10.

60.

61

No

0N

o5

00%

ND

ND

ND

ND

ND

2N

o0

No

52

40%

0.66

71.

160

0.53

21.

01.

14

No

0N

o5

00%

ND

ND

ND

ND

ND

2N

o0

No

53

60%

0.75

35.

420

2.12

85.

15.

120

No

0N

o5

510

0%0.

777

6.97

03.

255

6.7

6.7

10N

o0

No

55

100%

0.68

06.

350

2.68

95.

75.

920

No

0N

o5

360

%0.

640

3.61

01.

452

3.3

3.4

3Y

es1

Yes

54

80%

0.64

92.

590

1.38

72.

72.

69

No

0N

o5

510

0%0.

629

3.42

01.

898

3.5

3.4

7N

o0

No

55

100%

0.89

54.

410

2.15

54.

04.

18

No

0N

o5

510

0%0.

756

4.84

02.

491

4.7

4.7

4Y

es1

Yes

54

80%

0.63

42.

550

1.23

12.

42.

47

No

0N

o5

360

%0.

704

2.18

00.

976

2.0

2.0

3N

o0

No

52

40%

0.88

61.

420

0.62

81.

31.

31

Yes

1Y

es

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

No.

of

sam

ples

No.

of

Det

ects

Freq

uenc

y of

D

etec

tion

Upp

er 9

5%

UC

L o

f Mea

n

Mas

sDE

P U

rban

B

ackg

roun

dC

once

ntra

tion

(Fill

Soi

l C

onta

inin

g A

sh)

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

Ret

aine

d A

s C

OC

?95

thPe

rcen

tile

Num

ber

Sam

ples

A

bove

Urb

an

Bac

kgro

und

C-3

Ris

k A

rea

3 - R

evis

ed F

inal

.xls

x/Ta

ble

4Pa

ge 2

of 2

APP

EN

DIX

C-3

TA

BL

E 5

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

ySh

allo

w S

ubsu

rfac

e So

il (0

to 3

feet

) - F

ILL

UN

IT -

AL

L D

AT

A (E

xclu

ding

HB

/GP-

24/2

-4')

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

Dra

inag

e D

itch

Loc

atio

nsSt

agin

g A

rea

His

tori

cB

uild

ing

Loc

atio

nB

asel

ine

Con

ditio

ns L

ocat

ions

Cen

ter

Lin

e L

ocat

ions

SA/G

P-39

DD

/HA

-1D

D/H

A-2

DD

/HA

-3D

D/H

A-4

SA/G

P-17

SA/G

P-40

HB

/GP-

26B

L/S

S-4/

0-6"

BL

/SS-

5/0-

6"B

L/S

S-6/

0-6"

BL

/SS-

7/0-

6"B

L/S

S-8/

0-6"

CL

/GP-

20C

L/G

P-21

CL

/GP-

22U

nits

0 to

20

to 1

0 to

1.5

0 to

1.5

0 to

1.5

2 to

42

to 4

2 to

46/

29/0

26/

29/0

26/

29/0

26/

29/0

26/

29/0

22

to 4

2 to

42

to 4

Tot

al M

etal

sA

ntim

ony

mg/

kg20

383.

21.1

5.3

11.05

9.1

4.3

398

9.2

1.05

8436

1.05

Ars

enic

mg/

kg5.

713

4.9

4.6

8.6

3.1

2.4

9.7

6.6

3269

184.

825

352.

1B

ariu

mm

g/kg

6926

024

2324

3717

6122

420

170

3514

150

9712

Chr

omiu

mm

g/kg

1329

9.8

1111

9.4

1113

1270

7916

1930

168.

1C

obal

tm

g/kg

4.5

104.

25.

24.

75.

54.

44.

64

6.9

5.1

4.6

2.6

1112

4.1

Cop

per

mg/

kg70

074

040

2144

2016

6238

280

290

6829

3,20

03,

800

18Le

adm

g/kg

--

--

--

--

--

--

--

--

Nic

kel

mg/

kg11

327.

38.

48.

59.7

79.

27.

815

1411

1250

246.

2Zi

ncm

g/kg

210

1400

6041

6844

3212

046

670

1,10

089

9964

019

023

EPH

C9-

C18

Alip

hatic

sm

g/kg

5.6

5.6

5.5

5.55

5.6

5.2

5.2

6.25

355

.313

.418

.95.2

58.9

14.1

5.25

C19

-C36

Alip

hatic

sm

g/kg

47.6

65.7

30.2

13.6

19.9

5.2

5.2

35.2

31.5

257

57.9

132

348

133

96.6

5.25

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kg74

.780

.442

.941

.799

.618

.15.2

82.1

87.9

258

104

216

334

295

204

5.25

C11

-C22

Aro

mat

ics,

Adj

uste

dm

g/kg

71.4

74.8

40.3

38.9

83.2

16.8

5.2

80.8

8121

693

.317

833

027

916

95.25

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

0.281

0.281

0.2745

0.278

0.281

0.2605

0.261

0.3125

0.275

0.291

0.298

0.272

0.261

0.59

0.301

0.263

2-M

ethy

lnap

htha

lene

mg/

kg0.281

0.281

0.2745

0.278

0.281

0.2605

0.261

0.3125

0.275

0.94

50.298

0.272

0.261

1.35

0.301

0.263

Ace

naph

thyl

ene

mg/

kg0.281

0.281

0.2745

0.278

0.281

0.2605

0.261

0.3125

0.275

0.291

0.298

0.73

30.261

0.59

0.301

0.263

Ace

napt

hene

mg/

kg0.281

0.281

0.2745

0.278

0.281

0.2605

0.261

0.3125

0.275

0.291

0.298

0.272

0.261

0.59

0.301

0.263

Ant

hrac

ene

mg/

kg0.281

0.281

0.2745

0.278

0.281

0.2605

0.261

0.3125

0.275

1.16

0.298

0.66

70.261

0.59

0.301

0.263

Fluo

rene

mg/

kg0.281

0.281

0.2745

0.278

0.281

0.2605

0.261

0.3125

0.275

0.291

0.298

0.272

0.261

0.59

0.301

0.263

Phen

anth

rene

mg/

kg0.

2895

0.281

0.2745

0.278

0.82

60.2605

0.261

0.3125

0.275

5.42

0.75

33.

930.261

1.84

4.95

0.263

Fluo

rant

hene

mg/

kg0.

861

1.13

0.68

90.

854

2.43

0.69

0.261

0.3125

1.22

6.97

1.76

5.55

0.77

71.

665.

910.263

Pyre

nem

g/kg

0.71

51

0.60

20.

757

1.9

0.55

90.261

0.3125

0.99

56.

351.

493.

930.

680

1.31

5.39

0.263

Ben

zo(g

,h,i)

pery

lene

mg/

kg0.281

0.281

0.2745

0.278

1.24

0.2605

0.261

0.3125

0.275

2.44

0.298

3.61

0.64

00.59

1.18

0.263

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

0.281

0.28

70.2745

0.278

1.05

0.2605

0.261

0.3125

0.64

92.

590.

966

2.47

0.261

1.74

3.01

0.263

Chr

ysen

em

g/kg

0.281

0.76

0.2745

0.278

1.51

0.2605

0.261

0.3125

1.05

3.42

1.26

3.13

0.62

91.

963.

280.263

Ben

zo(b

)flu

oran

then

em

g/kg

0.57

10.

861

0.66

10.

574

1.57

0.2605

0.261

0.3125

1.15

2.96

1.36

4.41

0.89

52.

53.

70.263

Ben

zo(k

)flu

oran

then

em

g/kg

0.57

61.

270.

653

0.55

62.

030.2605

0.261

0.3125

1.16

4.84

1.76

3.94

0.75

62.

263.

580.263

Ben

zo(a

)pyr

ene

mg/

kg0.281

0.281

0.2745

0.278

0.91

30.2605

0.261

0.3125

0.63

42.

550.

849

1.86

0.261

1.53

2.41

0.263

Inde

no(1

,2,3

-cd)

Pyre

nem

g/kg

0.281

0.281

0.2745

0.278

0.81

70.2605

0.261

0.3125

0.275

2.18

0.70

41.

460.261

0.59

1.55

0.263

Dib

enzo

(a,h

)ant

hrac

ene

mg/

kg0.281

0.281

0.2745

0.278

2.09

0.2605

0.261

0.3125

0.275

0.88

60.298

1.42

0.261

0.59

0.301

0.263

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

Para

met

ers

C-3

Ris

k A

rea

3 - R

evis

ed F

inal

.xls

x/Ta

ble

5Pa

ge 1

of 3

Uni

tsT

otal

Met

als

Ant

imon

ym

g/kg

Ars

enic

mg/

kgB

ariu

mm

g/kg

Chr

omiu

mm

g/kg

Cob

alt

mg/

kgC

oppe

rm

g/kg

Lead

mg/

kgN

icke

lm

g/kg

Zinc

mg/

kg

EPH

C9-

C18

Alip

hatic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

napt

hene

mg/

kgA

nthr

acen

em

g/kg

Fluo

rene

mg/

kgPh

enan

thre

nem

g/kg

Fluo

rant

hene

mg/

kgPy

rene

mg/

kgB

enzo

(g,h

,i)pe

ryle

nem

g/kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-3

TA

BL

E 5

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

ySh

allo

w S

ubsu

rfac

e So

il (0

to 3

feet

) - F

ILL

UN

IT -

AL

L D

AT

A (E

xclu

ding

HB

/GP-

24/2

-4')

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

LFR

, Dec

embe

r 20

05

404-

S1/6

"-2'

1132

-S1/

6"-3

'26

8 (H

-S1)

/6"-

3'34

7-S1

/6"-

3'46

3-S1

/6"-

3'46

5-S1

/6"-

3'52

3-S1

/6"-

3'52

8-S1

/6"-

3'69

4-S1

/6"-

3'80

0-S1

/6"-

3'86

4-S1

/6"-

3'12

/02/

0512

/08/

0512

/13/

0511

/30/

0512

/05/

0512

/07/

0511

/29/

0511

/29/

0512

/01/

0512

/12/

0512

/07/

05

--

--

--

--

--

-66

.618

.22.9

2.7

2.6

2.7

2.6

5.82

41.8

27.1

8.48

113

18.6

26.3

26.8

37.7

036

669

.912

23,

670

1,23

012

118

.50

8.83

12.6

10.5

9.54

26.2

15.9

14.8

118

85.2

22.8

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

C-3

Ris

k A

rea

3 - R

evis

ed F

inal

.xls

x/Ta

ble

5Pa

ge 2

of 3

Uni

tsT

otal

Met

als

Ant

imon

ym

g/kg

Ars

enic

mg/

kgB

ariu

mm

g/kg

Chr

omiu

mm

g/kg

Cob

alt

mg/

kgC

oppe

rm

g/kg

Lead

mg/

kgN

icke

lm

g/kg

Zinc

mg/

kg

EPH

C9-

C18

Alip

hatic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

napt

hene

mg/

kgA

nthr

acen

em

g/kg

Fluo

rene

mg/

kgPh

enan

thre

nem

g/kg

Fluo

rant

hene

mg/

kgPy

rene

mg/

kgB

enzo

(g,h

,i)pe

ryle

nem

g/kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-3

TA

BL

E 5

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

ySh

allo

w S

ubsu

rfac

e So

il (0

to 3

feet

) - F

ILL

UN

IT -

AL

L D

AT

A (E

xclu

ding

HB

/GP-

24/2

-4')

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

Sum

mar

y St

atis

tics

No.

of

No.

of

95th

Sam

ples

Det

ects

Min

Max

Mea

nPe

rcen

tile

1612

75%

3.2

8416

2850

.37

Yes

8Y

es27

2281

%2.

1069

1623

59.2

20Y

es7

Yes

2727

100%

123,

670

268

554

987.

050

Yes

14Y

es27

2710

0%8.

111

826

3783

.340

Yes

4Y

es16

1169

%2.

612

67

11.3

4Y

es14

Yes

1611

69%

163,

800

585

1,20

73,

350.

020

0Y

es6

Yes

--

--

--

--

600

--

-16

1169

%6.

250

1521

36.5

30Y

es2

Yes

1611

69%

231,

400

302

528

1,17

530

0Y

es4

Yes

162

13%

359

1423

56N

A-

-Y

es16

850

%13

.634

880

132

280

NA

--

Yes

169

56%

18.1

334

122

178

305

NA

--

-16

956

%16

.833

011

016

229

2N

A-

-Y

es

160

0%N

DN

DN

DN

DN

D1

ND

0N

D16

213

%0.

945

1.35

00.

387

0.6

1.0

1Y

es1

Yes

161

6%0.

733

0.73

30.

327

0.4

0.6

1N

o0

No

160

0%N

DN

DN

DN

DN

D2

ND

0N

D16

213

%0.

667

1.16

00.

378

0.5

0.8

4N

o0

No

160

0%N

DN

DN

DN

DN

D2

ND

0N

D16

744

%0.

290

5.42

01.

280

2.2

5.1

20N

o0

No

1613

81%

0.68

96.

970

1.95

93.

16.

210

No

0N

o16

1381

%0.

559

6.35

01.

657

2.7

5.6

20N

o0

No

165

31%

0.64

03.

610

0.78

01.

32.

73

Yes

1Y

es

168

50%

0.28

73.

010

0.93

51.

52.

79

No

0N

o16

956

%0.

629

3.42

01.

183

1.8

3.3

7N

o0

No

1612

75%

0.57

14.

410

1.39

42.

13.

98

No

0N

o16

1275

%0.

756

4.84

01.

530

2.3

4.2

4Y

es1

Yes

167

44%

0.63

42.

550

0.82

61.

32.

47

No

0N

o16

531

%0.

704

2.18

00.

628

0.9

1.7

3N

o0

No

163

19%

0.88

62.

090

0.52

10.

81.

61

Yes

2Y

es

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

Freq

uenc

yof

Det

ectio

nR

etai

ned

As C

OC

?

Mas

sDE

PU

rban

Bac

kgro

und

Con

cent

ratio

n(F

ill S

oil

Con

tain

ing

Ash

)

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

Upp

er 9

5%

UC

L o

f M

ean

Num

ber

Sam

ples

Abo

ve U

rban

B

ackg

roun

d

C-3

Ris

k A

rea

3 - R

evis

ed F

inal

.xls

x/Ta

ble

5Pa

ge 3

of 3

APP

EN

DIX

C-3

TA

BL

E 6

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

yD

eep

Subs

urfa

ce S

oil (

>3 fe

et) A

LL

DA

TA

(Exc

ludi

ng S

A/G

P-44

9-1

1')

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

Stag

ing

Are

a (F

ill U

nit)

Stag

ing

Are

a (N

ativ

e So

il)H

isto

rica

l Bui

ldin

g L

ocat

ions

(Fill

Uni

t)

SA/G

P-17

SA/G

P-19

SA/G

P-40

SA/G

P-40

SA/G

P-41

SA/G

P-41

SA/G

P-42

SA/G

P-17

SA/G

P-18

/GP(

DU

P)SA

/GP-

18SA

/GP-

19SA

/GP-

40/(D

UP)

SA/G

P-42

SA/G

P-46

SA/G

P-46

SA/G

P-47

SA/G

P-47

SA/M

W-1

05D

SA/M

W-1

05D

P/M

W-1

09P/

MW

-110

/(DU

P)P/

MW

-111

HB

/GP-

24H

B/G

P-25

HB

/GP-

25H

B/G

P-26

HB

/GP-

46U

nits

2 to

46

to 8

2 to

48

to 1

04

to 8

10 to

12

4 to

810

to 1

212

to 1

414

to 1

6 8

to 1

210

to 1

210

to 1

28

to 1

010

to 1

212

to 1

414

to 1

62

to 4

10 to

12

12 to

14

12 to

14

12 to

14

4 to

64

to 8

10 to

12

2 to

44

to 8

Tot

al M

etal

sA

ntim

ony

mg/

kg1

1.05

1.05

131

110

01.2

1.2

1.2

1.2

1.2

1.1

1.3

1.2

1.2

1.2

1.05

1.05

1.05

1.1

11

1.05

1.05

9.1

4.8

Ars

enic

mg/

kg3.

12

2.4

219

239

1.8

1.9

1.8

1.8

2.1

1.7

1.9

2.1

1.7

1.8

1.9

21.

71.

61.

91.

92.

21.

69.

74.

2B

ariu

mm

g/kg

3717

1724

300

2420

015

1716

1418

2028

1520

1217

2321

2122

1729

1561

27C

hrom

ium

mg/

kg9.

47.

211

1043

7.5

665.

26.

36.

25.

36.

45.

46.

65.

36.

25.

35.

78.

69.

36

115.

87.

64.

813

7.6

Cob

alt

mg/

kg5.

54.

14.

45.

111

4.2

123.

53.

83.

73.

43.

93.

94

3.1

3.5

3.5

3.8

4.1

4.6

3.4

3.8

44.

13.

24.

64.

3C

oppe

rm

g/kg

2016

1628

1,10

016

630

7.6

8.2

8.1

77.

822

107.

37.

66.

710

1213

9.8

1113

199.

662

47Le

adm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

-N

icke

lm

g/kg

9.7

6.1

78.

429

06.

234

5.1

5.9

6.2

5.1

6.2

75.

85

5.2

4.8

5.9

6.6

6.4

5.1

8.2

5.5

7.7

5.3

9.2

6.8

Zinc

mg/

kg44

2832

3815

0028

2200

1112

1330

1980

1611

1211

1517

2015

1616

3558

120

51

EPH

C9-

C18

Alip

hatic

sm

g/kg

5.2

5.4

5.3

5.2

155.1

6.6

6.15

6.15

66

6.1

5.5

49.6

6.25

65.95

5.45

5.25

5.25

5.45

5.15

5.1

5.4

5.25

6.25

5.2

C19

-C36

Alip

hatic

sm

g/kg

5.2

5.4

5.3

5.2

317

5.1

58.9

6.15

6.15

66

6.1

5.5

36.1

6.25

65.95

5.45

5.25

5.25

5.45

5.15

49.2

5.4

5.25

35.2

22.9

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kg18

.15.4

5.3

5.2

244

5.1

27.1

6.15

6.15

66

6.1

5.5

45.3

6.25

65.95

5.45

5.25

5.25

5.45

5.15

5.1

5.4

5.25

82.1

45.2

C11

-C22

Aro

mat

ics,

Adj

uste

dm

g/kg

16.8

5.4

5.3

5.2

236

5.1

27.1

6.15

6.15

66

6.1

5.5

45.3

6.25

65.95

5.45

5.25

5.25

5.45

5.15

5.1

5.4

5.25

80.8

43.4

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

2-M

ethy

lnap

htha

lene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Ace

naph

thyl

ene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Ace

napt

hene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Ant

hrac

ene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Fluo

rene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Phen

anth

rene

mg/

kg0.261

0.269

0.266

0.261

1.11

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Fluo

rant

hene

mg/

kg0.

690

0.269

0.266

0.261

1.77

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.63

20.261

Pyre

nem

g/kg

0.55

90.269

0.266

0.261

1.3

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Ben

zo(g

,h,i)

pery

lene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

0.261

0.269

0.266

0.261

0.68

60.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Chr

ysen

em

g/kg

0.261

0.269

0.266

0.261

0.82

10.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.66

00.261

Ben

zo(b

)flu

oran

then

em

g/kg

0.261

0.269

0.266

0.261

0.74

30.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Ben

zo(k

)flu

oran

then

em

g/kg

0.261

0.269

0.266

0.261

0.74

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Ben

zo(a

)pyr

ene

mg/

kg0.261

0.269

0.266

0.261

0.58

20.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Inde

no(1

,2,3

-cd)

Pyre

nem

g/kg

0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

Dib

enzo

(a,h

)ant

hrac

ene

mg/

kg0.261

0.269

0.266

0.261

0.278

0.255

0.329

0.309

0.309

0.301

0.301

0.305

0.275

0.329

0.313

0.301

0.298

0.272

0.263

0.263

0.272

0.258

0.255

0.269

0.263

0.313

0.261

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

Para

met

ers

C-3

Ris

k A

rea

3 - R

evis

ed F

inal

.xls

x/Ta

ble

6Pa

ge 1

of 2

Uni

tsT

otal

Met

als

Ant

imon

ym

g/kg

Ars

enic

mg/

kgB

ariu

mm

g/kg

Chr

omiu

mm

g/kg

Cob

alt

mg/

kgC

oppe

rm

g/kg

Lead

mg/

kgN

icke

lm

g/kg

Zinc

mg/

kg

EPH

C9-

C18

Alip

hatic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

napt

hene

mg/

kgA

nthr

acen

em

g/kg

Fluo

rene

mg/

kgPh

enan

thre

nem

g/kg

Fluo

rant

hene

mg/

kgPy

rene

mg/

kgB

enzo

(g,h

,i)pe

ryle

nem

g/kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-3

TA

BL

E 6

RIS

K A

RE

A 3

- M

AIN

RA

IL Y

AR

DSo

il St

atis

tical

Sum

mar

yD

eep

Subs

urfa

ce S

oil (

>3 fe

et) A

LL

DA

TA

(Exc

ludi

ng S

A/G

P-44

9-1

1')

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

His

tori

cal B

uild

ing

Loc

atio

ns

(Nat

ive

Soil)

Sum

mar

y St

atis

tics

CL

/GP-

22C

L/G

P-23

CL

/GP-

23H

B/G

P-45

HB

/GP-

45H

B/G

P-46

CL

/GP-

20C

L/G

P-21

CL

/GP-

2236

1-S1

/3-6

'69

6-S1

/3-8

'63

6-S1

/8-1

1'N

o. o

fN

o. o

f 95

th2

to 4

4 to

810

to 1

28

to 1

010

to 1

214

to 1

612

to 1

612

to 1

68

to 1

211

/28/

0512

/05/

0511

/29/

05Sa

mpl

esD

etec

tM

inM

axA

vera

get-

valu

ePe

rcen

tile

1.05

1.25

11.35

1.1

1.2

1.2

1.2

1.1

--

-36

411

%4.

810

05.

017

.12.

030

610

.814

.67

Yes

3Y

es2.

14.

51.

44.

60.

921.

11.

83

2.3

2.6

17.3

20.2

3938

97%

0.92

394.

67.

32.

024

27.

019

.120

Yes

2Y

es12

3721

3913

1412

2216

11.7

278

532

3939

100%

11.7

532

52.7

102.

82.

024

3386

.028

0.2

50Y

es5

Yes

8.1

5.7

7.3

124.

44.

85.

37.

57.

15.

9415

.366

.339

3910

0%4.

466

.311

.314

.32.

024

516

.045

.340

Yes

3Y

es4.

13.

23.

64

2.6

2.8

3.5

4.5

3.6

--

-36

3610

0%2.

612

4.3

1.9

2.03

01

4.9

6.9

4Y

es14

Yes

1825

1012

87.

69.

410

12-

--

3636

100%

6.7

1,10

062

.120

5.6

2.03

070

132

204.

020

0Y

es2

Yes

--

--

--

--

--

--

--

--

--

--

--

-60

0-

--

6.2

5.4

5.3

7.1

4.6

4.9

57.

55.

8-

--

3633

92%

4.6

290

14.9

47.4

2.03

016

30.9

15.8

30Y

es2

Yes

2312

1725

1114

1236

23-

--

3636

100%

112,

200

128.

443

2.2

2.03

014

627

4.6

465.

030

0Y

es2

Yes

5.25

145.15

6.85

5.55

66

6.1

5.45

--

-36

411

%14

507

82.

030

310

14N

A-

-Y

es5.25

47.8

5.15

6.85

5.55

66

6.1

5.45

--

-36

822

%22

.931

720

532.

030

1838

52N

A-

-Y

es5.25

67.4

5.15

6.85

5.55

66

6.1

5.45

--

-36

822

%27

.124

419

432.

030

1434

71N

A-

--

5.25

67.4

5.15

6.85

5.55

66

6.1

5.45

--

-36

822

%27

.123

619

412.

030

1433

71N

A-

-Y

es

0.263

0.317

0.258

0.343

0.278

0.301

0.301

0.305

0.272

--

-36

00%

ND

ND

ND

ND

ND

ND

ND

ND

1N

D0

ND

0.263

0.317

0.258

0.343

0.278

0.301

0.301

0.305

0.272

--

-36

00%

ND

ND

ND

ND

ND

ND

ND

ND

1N

D0

ND

0.263

0.317

0.258

0.343

0.278

0.301

0.301

0.305

0.272

--

-36

00%

ND

ND

ND

ND

ND

ND

ND

ND

1N

D0

ND

0.263

0.317

0.258

0.343

0.278

0.301

0.301

0.305

0.272

--

-36

00%

ND

ND

ND

ND

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APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)WSE, Phase II, 2002:BC/SS-1/0-6" (24-JUL-02) 190BC/SS-2/0-6"(24-JUL-02) 580BC/SS-3/0-6"(24-JUL-02) 820

Rizzo, IH Data, 2000:SS02 Readville 590SS03 Readville 580SS04 Readville 9,600SS05 Readville 2,800SS06 Readville 92SS07 Readville 64SS08 Readville 1,200SS09 Readville 6,500SS10 Readville 46SS11 Readville 970SS12 Readville 3,500SS13 Readville 5,500SS14 Readville 610SS15 Readville 500SS16 Readville 410SS17 Readville 2,200SS18 Readville 180SS19 Readville 9,100SS20 Readville 5,100SS24 Readville 760SS25 Readville 570SS26 Readville 570SS27 Readville 410

DEP IH 2002 XRF Lead Screening DataRow C 2400 195Row C 2450 213Row C 2500 221Row C 2550 200Row C 2600 293Row C 2650 323Row C 2700 234Row C 2750 233Row C 2800 253Row C 2850 280Row C 2900 223Row C 2950 232Row C 3000 290Row C 3050 236Row C 3100 143Row D/E 2400 161Row D/E 2500 198Row D/E 2600 274Row D/E 2700 343Row D/E 2800 431Row D/E 2900 336Row F 2500 763Row F 2550 909

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 1 of 7

APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row F 2600 871Row F 2650 1,576Row F 2700 2,113Row F 2750 1,906Row F 2800 2,230Row F 2850 3,460Row F 2900 2,810Row F 3000 3,820Row F 3050 2,563Row F 3100 1,456Row G 2450 432Row G 2500 2,030Row G 2550 1,283Row G 2800 2,373Row G 2850 3,490Row G 2900 2,283Row G 2950 2,746Row G 3000 8,076Row G 3050 5,150Row G 3100 754Row G 3150 463Row H 2450 2,350Row H 2900 2,116Row H 2950 999Row H 3000 1,330Row H 3050 2,969Row H 3100 3,833Row H 3150 415Row I 2400 2,210Row I 2450 2,003Row I 3000 691Row I 3050 435Row I 3100 919Row I 3150 370Row J 2650 2,813Row J 2700 1,516Row J 2950 1,470Row J 3000 1,042Row J 3050 670Row J 3100 2,400Row J 3150 1,019Row K 2400 681Row K 2450 1,380Row K 2650 2,550Row K 2700 1,873Row K 2750 1,313Row K 2800 1,163Row K 2850 2,106Row K 2900 1,813Row K 3000 524Row K 3050 949Row K 3100 7,810Row K 3150 2,036Row L 2400 630

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 2 of 7

APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row L 2450 718Row L 2500 880Row L 2550 1,403Row L 2600 997Row L 2650 594Row L 2700 2,230Row L 2750 982Row L 2800 670Row L 2850 431Row L 2900 406Row L 3000 305Row L 3050 1,526Row L 3100 5,100Row M 2400 484Row M 2450 559Row M 2500 1,183Row M 2550 1,473Row M 2600 1,216Row M 2650 1,029Row M 2700 1,556Row M 2750 615Row M 3000 782Row M 3050 3,110Row M 3100 2,310Row M 3150 415Row N 2400 363Row N 2450 631Row N 2500 616Row N 2550 980Row N 2600 1,823Row N 2650 1,490Row N 2700 759Row N 2750 309Row N 2900 212Row N 2950 252Row N 3000 3,166Row N 3050 676Row O 2400 945Row O 2500 729Row O 2550 916Row O 2600 875Row O 2650 1,370Row O 2700 519Row O 2750 171Row O 2800 266Row O 2850 271Row O 2900 309Row P 2400 649Row P 2450 945Row P 2500 906Row P 2550 779Row Q 2400 330Row Q 2450 272Row Q 2500 505

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 3 of 7

APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row Q 2550 513Row Q 2600 849Row Q 2700 714Row Q 2750 850Row Q 2800 726Row Q 2850 306Row Q 2900 190Row Q 2950 87Row R 2400 223Row R 2450 294Row R 2500 242Row R 2550 208Row R 2600 354Row R 2650 327Row R 2700 288Row R 2750 282Row R 2800 192Row R 2850 297Row S 2400 335Row S 2450 130Row S 2500 263Row S 2550 140Row S 2600 92Row S 2650 139Row S 2700 90Row S 2750 276Row S 2800 203

LFR XRF Data, November-December 2005240 153.6242 347.4292 267.4*293 136.5294 220.8295 174.1296 202.1297 3200*298 172.7346 400.2347 <26.7348 214349 268350 104.6351 837.6354 <25.2401 114.9402 188.5403 352.6404 440.4405 818406 590.4407 422410 527.2*457 352.6458 522.8459 825.6462 397.8463 973.6465 769.6466 774512 200

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 4 of 7

APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)513 242.2514 544.8515 333.8516 1009.6517 2508.8*518 1580519 738521 656.8522 308.6568 157.5569 60.2570 74.8571 244.4572 231.4573 802574 1200*577 1129.6578 892623 366.2625 328.4626 119.2627 106.5628 253.2629 776.4633 2659.2634 2160679 416.8680 197.8681 95.1685 206.8686 589.2687 6598.4688 7520690 10899.2691 7686.4735 135739 234.2740 476.4742 2889.6743 4697.6*789 139.5790 4198.4*791 341795 786796 1620797 2329.6798 1649.6799 4809.6*800 6467.2803 3000845 305.2846 22297.6847 592848 <28.8849 208850 665.2852 2840854 406.8857 1340858 3427.2859 4208860 <37.05901 458.8902 4457.6903 491.6907 4988.8908 758.4913 1549.6

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 5 of 7

APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)914 1609.6915 351.6916 <28.65959 185.7960 361.6962 1180964 407.8968 787.2969 275970 1040971 1300972 149.21014 288.21015 222.61016 7654.41017 888.81018 3417.61019 1089.61020 1849.61021 30489.61022 1549.61025 117.11026 58.51027 <40.651028 1561071 1689.61072 510.81073 6988.81074 4137.61075 8787.2*1078 25601079 326.21080 126.81081 213.61083 <26.11128 475.21129 3388.81130 344.21132 <31.651133 119.91134 127.41135 53.51136 43.11186 3609.6

LFR Laboratory Data, November-December 2005292 301297 5,580410 671457 345*517 4,550574 1,900743 7,930790 4,230

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 6 of 7

APPENDIX C-4TABLE 1

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Surficial Soil (0 to 6 inches bgs) - All Data Sources (Excluding Hot Spots)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)799 7,690846 21100*970 992*1016 5260*1075 10,000

Earth Tech XRF Data, June 2008297 (0-0.5) 348410 (0-0.5) 895463 (0-0.5) 1,623517 (0-0.5) 3,399634 (0-0.5) 4,000688 (0-0.5) 8,715690 (0-0.5) 8,126742 (0-0.5) 1,245790 (0-0.5) 24,627797 (0-0.5) 2,549799 (0-0.5) 8,630800 (0-0.5) 8,207846 (0-0.5) 4,235858 (0-0.5) 3,768908 (0-0.5) 3,1561018 (0-0.5) 1,2461020 (0-0.5) 2,9751022 (0-0.5) 1,1261073 (0-0.5) 8,7131075 (0-0.5) 2,6951078 (0-0.5) 4,888

Earth Tech Laboratory Data, June 20081016 (0-0.5) 1071130 (0-0.5) 553

Summary Statistics:No. of Samples (excluding SS01) 365No. of Detects 357Frequency of Detection 98%Minimum Concentration 13Maxiumum Concentration 30,490Average Concentration 1,688Standard Deviation 3,037t-value 1.96795% Confidence Interval 31395% UCL on the Mean 2,001

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? YesUCL of 6,000 ppm Exceeded? Yes

Notes:* - Duplicate sample analyzed by XRF and laboratory. Higher detected result of the duplicate analyses used in the summary statistics. Asterisk placed on result not used.mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

C-4 Risk Area 4 - Revised Final.xlsx/Table 1 Page 7 of 7

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)WSE, Phase II, 2002:

BC/SS-1/0-6" (24-JUL-02) 190BC/SS-2/0-6"(24-JUL-02) 580BC/SS-3/0-6"(24-JUL-02) 820BP/HA-1/0-1'(16-AUG-02) 100BP/HA-2/0-1'(16-AUG-02) 230

CL/GP-10/S-1/0-4' (23-JUL-02) 790HB/GP-14/S-1/0-4'(24-JUL-02) 26EZ/GP-2/S-1/0-4'(22-JUL-02) 95EZ/GP-4/S-1/0-4'(22-JUL-02) 3EZ/GP-7/S-1/0-4'(23-JUL-02) 540EZ/GP-8/S-1/0-4'(23-JUL-02) 1,200

EZ/GP-43/0-2'(26-JUL-02) 1,100HB/GP-15/S-1/1-3'(24-JUL-02) 400HB/GP-16/S-1/1-3'(24-JUL-02) 590BP/HA-1/2-2.5'(16-AUG-02) 25BP/HA-2/1.8-2'(16-AUG-02) 130

Rizzo, IH Data, 2000:SS02 Readville 590SS03 Readville 580SS04 Readville 9,600SS05 Readville 2,800SS06 Readville 92SS07 Readville 64SS08 Readville 1,200SS09 Readville 6,500SS10 Readville 46SS11 Readville 970SS12 Readville 3,500SS13 Readville 5,500SS14 Readville 610SS15 Readville 500SS16 Readville 410SS17 Readville 2,200SS18 Readville 180SS19 Readville 9,100SS20 Readville 5,100SS24 Readville 760SS25 Readville 570SS26 Readville 570SS27 Readville 410

DEP IH 2002 XRF Lead Screening DataRow C 2400 195Row C 2450 213Row C 2500 221Row C 2550 200Row C 2600 293Row C 2650 323Row C 2700 234Row C 2750 233Row C 2800 253Row C 2850 280Row C 2900 223

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 1 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row C 2950 232Row C 3000 290Row C 3050 236Row C 3100 143

Row D/E 2400 161Row D/E 2500 198Row D/E 2600 274Row D/E 2700 343Row D/E 2800 431Row D/E 2900 336

Row F 2500 763Row F 2550 909Row F 2600 871Row F 2650 1,576Row F 2700 2,113Row F 2750 1,906Row F 2800 2,230Row F 2850 3,460Row F 2900 2,810Row F 3000 3,820Row F 3050 2,563Row F 3100 1,456Row G 2450 432Row G 2500 2,030Row G 2550 1,283Row G 2800 2,373Row G 2850 3,490Row G 2900 2,283Row G 2950 2,746Row G 3000 8,076Row G 3050 5,150Row G 3100 754Row G 3150 463Row H 2450 2,350Row H 2900 2,116Row H 2950 999Row H 3000 1,330Row H 3050 2,969Row H 3100 3,833Row H 3150 415Row I 2400 2,210Row I 2450 2,003Row I 3000 691Row I 3050 435Row I 3100 919Row I 3150 370Row J 2650 2,813Row J 2700 1,516Row J 2950 1,470Row J 3000 1,042Row J 3050 670Row J 3100 2,400Row J 3150 1,019Row K 2400 681Row K 2450 1,380

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 2 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row K 2650 2,550Row K 2700 1,873Row K 2750 1,313Row K 2800 1,163Row K 2850 2,106Row K 2900 1,813Row K 3000 524Row K 3050 949Row K 3100 7,810Row K 3150 2,036Row L 2400 630Row L 2450 718Row L 2500 880Row L 2550 1,403Row L 2600 997Row L 2650 594Row L 2700 2,230Row L 2750 982Row L 2800 670Row L 2850 431Row L 2900 406Row L 3000 305Row L 3050 1,526Row L 3100 5,100Row M 2400 484Row M 2450 559Row M 2500 1,183Row M 2550 1,473Row M 2600 1,216Row M 2650 1,029Row M 2700 1,556Row M 2750 615Row M 3000 782Row M 3050 3,110Row M 3100 2,310Row M 3150 415Row N 2400 363Row N 2450 631Row N 2500 616Row N 2550 980Row N 2600 1,823Row N 2650 1,490Row N 2700 759Row N 2750 309Row N 2900 212Row N 2950 252Row N 3000 3,166Row N 3050 676Row O 2400 945Row O 2500 729Row O 2550 916Row O 2600 875Row O 2650 1,370Row O 2700 519Row O 2750 171

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 3 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

Row O 2800 266Row O 2850 271Row O 2900 309Row P 2400 649Row P 2450 945Row P 2500 906Row P 2550 779Row Q 2400 330Row Q 2450 272Row Q 2500 505Row Q 2550 513Row Q 2600 849Row Q 2700 714Row Q 2750 850Row Q 2800 726Row Q 2850 306Row Q 2900 190Row Q 2950 87Row R 2400 223Row R 2450 294Row R 2500 242Row R 2550 208Row R 2600 354Row R 2650 327Row R 2700 288Row R 2750 282Row R 2800 192Row R 2850 297Row S 2400 335Row S 2450 130Row S 2500 263Row S 2550 140Row S 2600 92Row S 2650 139Row S 2700 90Row S 2750 276Row S 2800 203

LFR XRF Data, November-December 2005240 153.6240 146.8242 347.4242 47.5292 267.4*292 <24.75293 136.5293 <27.6294 220.8294 <29.1295 174.1295 27.6296 202.1296 59.9297 3200*297 26.7298 172.7298 125.3346 400.2346 <19.95

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 4 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)347 <26.7347 <25.2348 214348 <29.7349 268349 <35.25350 104.6350 <19.95351 837.6351 <32.25354 <25.2354 1320401 114.9401 <20.85402 188.5402 <26.4403 352.6403 135.5404 440.4404 665.2404 38.9405 818405 <23.7406 590.4406 <17.7407 422407 768410 527.2*410 35.5457 352.6457 58.5458 522.8458 207.4459 825.6459 <26.55462 397.8462 54.1463 973.6463 974463 64.2465 769.6465 1120466 774512 200512 149.8513 242.2513 <28.5514 544.8514 <27.15515 333.8515 <25.05516 1009.6516 41.7517 2508.8*517 682518 1580518 257.2519 738519 140.4521 656.8521 61.9522 308.6522 612.8568 157.5568 <28.35569 60.2569 <29.4570 74.8

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 5 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)570 <29.85571 244.4571 <27.6572 231.4572 <25.95573 802573 44.5574 1200*574 <28.65577 1129.6577 1100578 892578 1800623 366.2623 258.2625 328.4625 <29.25626 119.2626 <31.5627 106.5627 107627 <23.7628 253.2628 <33.15629 776.4629 451.6633 2659.2633 1320634 2160634 1080679 416.8679 51.8680 197.8680 26681 95.1681 <29.7685 206.8685 <26.7686 589.2686 141687 6598.4687 5059.2688 7520688 2129.6690 10899.2690 3449.6691 7686.4691 4137.6734 140.1735 135735 <25.65739 234.2739 <22.05740 476.4740 <35.1742 2889.6742 39.3743 4697.6*743 4057.6789 139.5789 <28.2790 4198.4*790 47.2791 341791 <20.85795 786795 1329.6796 1620

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 6 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)797 2329.6797 3169.6798 1649.6798 1009.6799 4809.6*799 2468.8800 6467.2800 8716.8802 5040802 883.2803 3000803 <29.4845 305.2845 75.7846 22297.6846 22,298846 235847 592847 <25.95848 <28.8848 <33.9849 208849 <29.1850 665.2850 50.1852 2840852 8556.8854 406.8854 604857 1340857 <30.75858 3427.2858 <26.25859 4208859 44.2860 <37.05860 <28.8901 458.8901 <33.6902 4457.6902 <30903 491.6903 <28.5907 4988.8907 4560908 758.4908 3188.8913 1549.6913 464.4914 1609.6914 33.3915 <32.25916 <28.65916 40.1959 185.7959 <31.05960 361.6960 <23.4962 1180962 633.6964 407.8964 1569.6968 787.2968 34.5969 275969 115970 1040970 <31.65

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 7 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)971 1300971 124.6972 149.2972 <32.7

1014 288.21014 35.31015 222.61015 32.91016 7654.41016 <31.051017 888.81017 <31.51018 3417.61018 92.31019 1089.61019 13990.41020 1849.61020 <24.31021 30489.61021 <31.651022 1549.61022 97.81025 117.11025 <28.651026 58.51026 <25.051027 <40.651027 34.81028 1561028 <22.051071 1689.61071 183.71072 510.81072 <32.551073 6988.81073 110.31074 4137.61074 72.61075 8787.2*1075 732.81078 25601078 75.71079 326.21079 <29.551080 126.81080 <24.31081 213.61081 29.61083 <26.11083 <32.851128 475.21128 <31.651129 3388.81129 <30.61130 344.21130 52.21132 <31.651132 210.21133 119.91133 <30.31134 127.41134 <33.751135 53.51135 <33.451136 43.11136 <27.751186 3609.61186 144.4

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 8 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

LFR Laboratory Data, November-December 2005292 301297 5,580410 671457 345*517 4,550574 1,900743 7,930790 4,230799 7,690846 21100*970 992*

1016 5260*1075 10,000

Earth Tech XRF Data, June 2008297 (0-0.5) 348410 (0-0.5) 895463 (0-0.5) 1,623517 (0-0.5) 3,399634 (0-0.5) 4,000688 (0-0.5) 8,715690 (0-0.5) 8,126742 (0-0.5) 1,245790 (0-0.5) 24,627797 (0-0.5) 2,549799 (0-0.5) 8,630800 (0-0.5) 8,207846 (0-0.5) 4,235858 (0-0.5) 3,768908 (0-0.5) 3,1561018 (0-0.5) 1,2461020 (0-0.5) 2,9751022 (0-0.5) 1,1261073 (0-0.5) 8,7131075 (0-0.5) 2,6951078 (0-0.5) 4,888297 (0.5-3.0) 70410 (0.5-3.0) <13463 (0.5-3.0) 128517 (0.5-3.0) 161634 (0.5-3.0) 1,394688 (0.5-3.0) 477690 (0.5-3.0) 4,166790 (0.5-3.0) 15797 (0.5-3.0) 375799 (0.5-3.0) 7,922800 (0.5-3.0) 8,083846 (0.5-3.0) 18858 (0.5-3.0) 102908 (0.5-3.0) 2,384

1016 (0.5-3.0) 5941018 (0.5-3.0) 171022 (0.5-3.0) <131073 (0.5-3.0) 4811075 (0.5-3.0) 5521078 (0.5-3.0) 1361130 (0.5-2.5) <14

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 9 of 10

APPENDIX C-4TABLE 2

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Shallow Subsurface Soil (0 to 3 feet) - All data Sources (Excluding Rizzo SS01)MBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)Earth Tech Laboratory Data, June 2008

1016 (0-0.5) 1071130 (0-0.5) 553

Summary Statistics:No. of Samples 547No. of Detects 470Frequency of Detection 86%Minimum Concentration 3Maxiumum Concentration 30,490Average Concentration 1,380Standard Deviation 2,863t-value 1.96495% Confidence Interval 24095% UCL on the Mean 1,621

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? YesUCL of 6,000 ppm Exceeded? Yes

Notes:1. Note that two results in a given reference cell from the LFR XRF 2005 data are for depths of 0'-0.5' and 0.5'-3' below grade.* - Duplicate sample analyzed by XRF and laboratory. Higher detected result of the duplicate analyses used in the summary statistics. Asterisk placed on result not used.mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

C-4 Risk Area 4 - Revised Final.xlsx/Table 2 Page 10 of 10

APPENDIX C-4TABLE 3

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Deep Soil sampling (>3 feet) - LFR and Earth Tech dataMBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)

LFR XRF Data, November-December 2005292 76.4296 <27.75*406 <24.45407 32.6512 <25.65*517 321.7518 291.1578 27.15633 <23.25634 21.2634 5049.6686 <29.7687 43.6688 45690 44.1691 2499.2691 78.6743 67.4748 306748 547.7795 89.7796 5280796 2510798 115.6798 472799 454.4*800 3708.8802 30.7850 79.6854 <25.05907 1859.2907 970.4908 3548.8908 <24.3962 <27.15964 1200964 1649.6964 1569.6969 <26.851019 <23.851021 81.21075 90.71130 86.1

LFR Laboratoy Data, November-December 20051075 (3-6') 85.5*296 (3-5') 15.4512 (3-5') 13690 (11-13') 37.8*790 (3-6') 909796 (13.5') 371*799 (10-15') 694

Earth Tech XRF Data, June 2008297 (3.0-6.0) 37355 (3.0-6.0) 71463 (3.0-6.0) 47517 (3.0-6.0) 231634 (3.0-6.0) 586688 (3.0-4.5) 3350690 (3.0-6.0) 2596742 (3.0-6.0) 9238790 (3.0-6.0) 83797 (3.0-6.0) 14521799 (3.0-6.0) 6322800 (3.0-6.0) 11464846 (3.0-6.0) <26858 (3.0-6.0) 122

C-4 Risk Area 4 - Revised Final.xlsx/Table 3 Page 1 of 2

APPENDIX C-4TABLE 3

Soil Statistical SummaryRISK AREA 4 (Exclusion Zone)

Deep Soil sampling (>3 feet) - LFR and Earth Tech dataMBTA Readville 5 Yard, Dedham, MA.

Sample ID Lead (mg/kg)908 (3.0-6.0) 306491020 (3.0-6.0) 1521022 (3.0-6.0) 161073 (3.0-4.0) <131075 (3.0-4.0) 36

Earth Tech Laboratory Data, June 2008410 (3-6') 19.51078 (3-6') 21.7

Summary Statistics:No. of Samples 71No. of Detects 61Frequency of Detection 86%Minimum Concentration 13Maxiumum Concentration 30,649Average Concentration 1,756Standard Deviation 4,560t-value 1.99495% Confidence Interval 107995% UCL on the Mean 2,835

MassDEP Urban Background (Fill Soil) 600CA/T 95th Percentile Urban Background 1,100Max. Concentration Above Background? YesUCL of 6,000 ppm Exceeded? Yes

Notes:1. Note that two results in a given reference cell from the LFR XRF 2005 data are for two different depths below grade.* - Duplicate sample analyzed by XRF and laboratory. Higher detected result of the duplicate analyses used in the summary statistics. Asterisk placed on result not used.mg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm).UCL = Upper Confidence Limit.

C-4 Risk Area 4 - Revised Final.xlsx/Table 3 Page 2 of 2

APP

EN

DIX

C-4

TA

BL

E 4

RIS

K A

RE

A 4

- E

XC

LU

SIO

N Z

ON

ESt

atis

tical

Sum

mar

y - M

etal

s, E

PH P

aram

eter

s and

PA

Hs i

n Su

rfic

ial S

oil (

0 to

6 in

ch) E

xclu

ding

Lea

dM

BT

A R

eadv

ille

5 Y

ard,

Ded

ham

, MA

.

Sum

mar

y St

atis

tics

BC

/SS-

1/0-

6"B

C/S

S-2/

0-6"

B

C/S

S-3/

0-6"

29

7-S1

/0-6

"29

2-S1

-0-6

"41

0-S1

/0-6

"45

7-S1

/0-6

"51

7-S1

/0-6

"57

4-S1

/0-6

"84

6-S1

/0-6

"97

0-S1

/0-6

"10

16-S

1/0-

6"10

75-S

1/0-

6"74

3-S1

/0-6

"79

9-S1

/0-6

"10

16/0

-6"

1130

/0-6

"N

o. o

fU

nits

24-J

UL

-02

24-J

UL

-02

24-J

UL

-02

30-N

ov-0

530

-Nov

-05

2-D

ec-0

52-

Dec

-05

5-D

ec-0

55-

Dec

-05

5-D

ec-0

58-

Dec

-05

8-D

ec-0

58-

Dec

-05

12-D

ec-0

512

-Dec

-05

18-J

un-0

819

-Jun

-08

Sam

ples

Min

Max

Ave

rage

Tot

al M

etal

sA

ntim

ony

mg/

kg11

9.8

13-

--

--

--

--

--

--

-3

310

0%11

1311

.31.

64.

303

415

12.8

7Y

es3

Yes

Ars

enic

mg/

kg14

018

2618

.32.9

29.5

93.7

31.8

15.6

43.4

16.1

20.4

43.3

26.0

30.8

12.2

14.5

1716

94%

12.2

140

34.3

33.8

2.12

017

5210

3.0

20Y

es10

Yes

Bar

ium

mg/

kg34

100

150

226

8390

.059

.01,

910

357

5,43

019

251

270

82,

540

4,41

0-

-15

1510

0%34

5,43

01,

120.

01,

716.

42.

145

951

2071

4,71

6.0

50Y

es14

Yes

Chr

omiu

mm

g/kg

9.1

2023

89.8

8.31

25.7

16.6

076

.40

29.1

120

22.7

29.3

44.3

102

127

--

1515

100%

9.1

127

49.6

41.6

2.14

523

72.6

122.

140

Yes

6Y

esC

obal

tm

g/kg

6.3

5.8

7.3

--

--

--

--

--

--

--

33

100%

6.3

7.3

6.5

0.8

4.30

32

8.4

7.2

4Y

es3

Yes

Cop

per

mg/

kg70

240

200

--

--

--

--

--

--

--

33

100%

7024

017

0.0

88.9

4.30

322

139

123

6.0

200

Yes

1Y

esLe

adm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

600

--

-

EPH

C9-

C18

Alip

ahtic

sm

g/kg

5.4

11.1

5.5

--

--

--

--

--

--

18.4

15.45

50

0%-

-11

.25.

82.

776

718

17.8

NA

--

No

C19

-C36

Alip

hatic

sm

g/kg

38.8

124

36.8

--

--

--

--

--

--

18.4

15.45

53

60%

36.8

124

46.7

44.5

2.77

655

102

107.

0N

A-

-Y

esC

11-C

22 A

rom

atic

s, U

nadj

uste

dm

g/kg

94.5

281

80.4

--

--

--

--

--

--

18.4

15.45

53

60%

80.4

281

98.0

108.

42.

776

135

232

243.

7N

A-

--

C11

-C22

Aro

mat

ic, A

djus

ted

mg/

kg83

.223

470

.6-

--

--

--

--

--

-18.4

15.45

53

60%

70.6

234

84.3

89.0

2.77

611

119

520

3.8

NA

--

Yes

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

0.269

0.555

0.275

--

--

--

--

--

--

0.3

0.1

51

20%

0.30

00.

300

0.30

00.

163

2.77

60.

203

0.5

0.5

1N

o0

No

2-M

ethy

lnap

htha

lene

mg/

kg0.269

0.555

0.275

--

--

--

--

--

--

0.3

0.1

51

20%

0.30

00.

300

0.30

00.

163

2.77

60.

203

0.5

0.5

1N

o0

No

Ace

naph

thyl

ene

mg/

kg0.269

0.555

0.275

--

--

--

--

--

--

0.3

0.1

51

20%

0.30

00.

300

0.30

00.

163

2.77

60.

203

0.5

0.5

1N

o0

No

Ace

naph

then

em

g/kg

0.269

0.555

0.275

--

--

--

--

--

--

0.1

0.1

50

0%N

DN

DN

DN

DN

DN

DN

DN

D2

ND

0N

DA

nthr

acen

em

g/kg

0.269

1.22

0.275

--

--

--

--

--

--

0.1

0.1

51

20%

1.22

01.

220

0.39

30.

470

2.77

60.

584

1.0

1.0

4N

o0

No

Fluo

rene

mg/

kg0.269

0.555

0.275

--

--

--

--

--

--

0.2

0.1

51

20%

0.20

00.

200

0.28

00.

169

2.77

60.

210

0.5

0.5

2N

o0

No

Phen

anth

rene

mg/

kg0.269

5.42

0.64

3-

--

--

--

--

--

-0.

70.1

53

60%

0.64

35.

420

1.42

62.

247

2.77

62.

790

4.2

4.5

20N

o0

No

Fluo

rant

hene

mg/

kg1.

396.

121.

44-

--

--

--

--

--

-1.

20.

45

510

0%0.

400

6.12

02.

110

2.28

02.

776

2.83

14.

95.

210

No

0N

oPy

rene

mg/

kg1.

628.

091.

51-

--

--

--

--

--

-1.

30.

45

510

0%0.

400

8.09

02.

584

3.11

52.

776

3.86

86.

56.

820

No

0N

oB

enzo

(g,h

,i)pe

ryle

nem

g/kg

0.86

83.

010.

606

--

--

--

--

--

--

0.4

0.1

54

80%

0.40

03.

010

0.99

71.

160

2.77

61.

440

2.4

2.6

3N

o0

No

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

1.03

3.49

0.81

5-

--

--

--

--

--

-0.

70.1

54

80%

0.7

3.49

1.22

71.

311

2.77

61.

628

2.9

3.0

9N

o0

No

Chr

ysen

em

g/kg

1.27

4.24

1.05

--

--

--

--

--

--

10.

35

510

0%0.

34.

241.

572

1.53

52.

776

1.90

63.

53.

67

No

0N

oB

enzo

(b)f

luor

anth

ene

mg/

kg1.

564.

831.

27-

--

--

--

--

--

-1.

20.

45

510

0%0.

44.

831.

852

1.71

92.

776

2.13

54.

04.

28

No

0N

oB

enzo

(k)f

luor

anth

ene

mg/

kg1.

794

1.24

--

--

--

--

--

--

0.4

0.1

54

80%

0.4

41.

506

1.54

72.

776

1.92

13.

43.

64

No

0N

oB

enzo

(a)p

yren

em

g/kg

0.97

3.43

0.69

6-

--

--

--

--

--

-0.

60.

25

510

0%0.

23.

431.

179

1.28

82.

776

1.59

92.

82.

97

No

0N

oIn

deno

(1,2

,3-c

d)Py

rene

mg/

kg0.

828

2.9

0.60

3-

--

--

--

--

--

-0.

50.1

54

80%

0.5

2.9

0.98

61.

102

2.77

61.

368

2.4

2.5

3N

o0

No

Dib

enzo

(a,h

)ant

hrac

ene

mg/

kg0.269

0.555

0.54

9-

--

--

--

--

--

-0.

20.1

52

40%

0.2

0.54

90.

335

0.20

72.

776

0.25

70.

60.

61

No

0N

o

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm)

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

CO

C=

Che

mic

al o

f Con

cern

for t

he S

iteEP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs

PAH

s = P

olyc

lycl

ic A

rom

atic

Hyd

roca

rbon

sU

CL

= U

pper

Con

fiden

ce L

imit

Italic

s ind

icat

e th

at a

naly

te w

as n

ot d

etec

ted

abov

e la

bora

tory

det

ectio

n lim

it. V

alue

show

n is

one

-hal

f the

repo

rtabl

e de

tect

ion

li m

Para

met

ers

No.

of

Det

ects

Freq

uenc

yof

Det

ectio

n

Ear

th T

ech,

200

8

Ret

aine

dA

s CO

C?

Site

Max

imum

Det

ecte

dC

once

ntra

tion

Abo

veB

ackg

roun

d?

Mas

sDE

PU

rban

Bac

kgro

und

Con

cent

ratio

n(F

ill S

oil

Upp

er95

% U

CL

of

Mea

n

Num

ber

Sam

ples

Abo

ve U

rban

B

ackg

roun

d95

thPe

rcen

tile

t-va

lue

Stan

dard

Dev

iatio

n

95%

Con

fiden

ceIn

terv

al

WSE

, 200

2 PH

ASE

IIL

FR, 2

005

C-4

Ris

k A

rea

4 - R

evis

ed F

inal

.xls

x/Ta

ble

4

APP

EN

DIX

C-4

TA

BL

E 5

RIS

K A

RE

A 4

- E

XC

LU

SIO

N Z

ON

ESt

atis

tical

Sum

mar

y - M

etal

s, E

PH P

aram

eter

s and

PA

Hs i

n Su

bsur

face

Soi

l (0

to 3

feet

)M

BT

A R

eadv

ille

5 Y

ard,

Ded

ham

, MA

.

WSE

, 200

2 PH

ASE

IIL

FR, D

ecem

ber

2005

BC

/SS-

1/0-

6"B

C/S

S-2/

0-6"

B

C/S

S-3/

0-6"

B

P/H

A-1

/0-1

BP/

HA

-2/0

-1C

L/G

P-10

/S-1

/0-4

HB

/GP-

14/S

-1/0

-4E

Z/G

P-2/

S-1/

0-4

EZ

/GP-

4/S-

1/0-

4E

Z/G

P-7/

S-1/

0-4

EZ

/GP-

8/S-

1/0-

4E

Z/G

P-43

/0-2

H

B/G

P-15

/S-1

/1-3

HB

/GP-

16/S

-1/1

-3B

P/H

A-1

/2-2

.5B

P/H

A-2

/1.8

-297

0-S1

/0.5

-3'

Uni

ts24

-JU

L-0

224

-JU

L-0

224

-JU

L-0

216

-AU

G-0

216

-AU

G-0

223

-JU

L-0

224

-JU

L-0

222

-JU

L-0

222

-JU

L-0

223

-JU

L-0

223

-JU

L-0

226

-JU

L-0

224

-JU

L-0

224

-JU

L-0

216

-AU

G-0

216

-AU

G-0

28-

Dec

-05

Tot

al M

etal

sA

ntim

ony

mg/

kg11

9.8

131

2.6

991

11

8.6

326

5.2

8.4

11

-A

rsen

icm

g/kg

140

1826

4.9

8.4

573.

12.

72.

28.

33.

118

7.7

32.

64.

22.6

Chr

omiu

mm

g/kg

9.1

2023

7.7

9.9

1247

9.8

6.2

1644

2610

205.

76

0.3

Cob

alt

mg/

kg6.

35.

87.

35

4.3

5.4

4.8

4.7

4.5

6.2

26.

47.

82.

54.

64.

49.

68C

oppe

rm

g/kg

7024

020

025

5051

012

2112

160

110

340

7327

2124

-Le

adm

g/kg

--

--

--

--

--

--

--

--

-

EPH

C9-

C18

Alip

ahtic

sm

g/kg

5.4

11.1

5.5

5.1

2636

.35.15

5.1

5.15

11.4

16.8

405.45

5.3

5.1

5.1

-C

19-C

36 A

lipha

tics

mg/

kg38

.812

436

.85.1

70.4

248

5.15

5.1

5.15

57.5

36.7

89.6

5.45

5.3

5.1

5.1

-C

11-C

22 A

rom

atic

s, U

nadj

uste

dm

g/kg

94.5

281

80.4

5.1

66.5

157

5.15

5.1

5.15

122

99.7

351

17.4

5.3

5.1

26.6

-C

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg83

.223

470

.65.1

66.5

130

5.15

5.1

5.15

116

96.3

317

16.7

5.3

5.1

26.6

-

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

0.269

0.555

0.275

0.253

0.255

0.89

60.258

0.255

0.258

0.278

0.64

10.555

0.272

0.266

0.255

0.255

-2-

Met

hyln

apht

hale

nem

g/kg

0.269

0.555

0.275

0.253

0.255

1.49

0.258

0.255

0.258

0.59

20.

966

1.3

0.272

0.266

0.255

0.255

-A

cena

phth

ylen

em

g/kg

0.269

0.555

0.275

0.253

0.255

0.58

50.258

0.255

0.258

0.278

0.261

0.555

0.272

0.266

0.255

0.255

-A

cena

pthe

nem

g/kg

0.269

0.555

0.275

0.253

0.255

0.291

0.258

0.255

0.258

0.278

0.261

0.555

0.272

0.266

0.255

0.255

-A

nthr

acen

em

g/kg

0.269

1.22

0.275

0.253

0.255

0.291

0.258

0.255

0.258

0.278

0.261

0.555

0.272

0.266

0.255

0.255

-Fl

uore

nem

g/kg

0.269

0.555

0.275

0.253

0.255

0.291

0.258

0.255

0.258

0.278

0.261

0.555

0.272

0.266

0.255

0.255

-Ph

enan

thre

nem

g/kg

0.269

5.42

0.64

30.253

0.255

1.66

0.258

0.255

0.258

1.01

0.58

92.

020.272

0.266

0.255

0.255

-Fl

uora

nthe

nem

g/kg

1.62

8.09

1.51

0.253

0.83

82.

070.258

0.255

0.258

1.38

0.261

3.98

0.72

30.266

0.255

0.255

-Py

rene

mg/

kg1.

396.

121.

440.253

0.68

11.

840.258

0.255

0.258

1.01

0.53

23.

360.272

0.266

0.255

0.255

-B

enzo

(g,h

,i)pe

ryle

nem

g/kg

0.86

83.

010.

606

0.253

0.255

1.55

0.258

0.255

0.258

0.278

0.261

2.26

0.272

0.266

0.255

0.255

-

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

1.03

3.49

0.81

50.253

0.255

1.84

0.258

0.255

0.258

0.61

30.261

2.72

0.272

0.266

0.255

0.255

-C

hrys

ene

mg/

kg1.

274.

241.

050.253

0.73

22.

550.258

0.255

0.258

0.74

10.261

3.72

0.272

0.266

0.255

0.255

-B

enzo

(b)f

luor

anth

ene

mg/

kg1.

564.

831.

270.253

1.03

4.16

0.258

0.255

0.258

0.278

0.261

4.33

0.272

0.266

0.255

0.255

-B

enzo

(k)f

luor

anth

ene

mg/

kg1.

794

1.24

0.253

0.64

52.

20.258

0.255

0.258

0.85

90.

669

4.61

0.272

0.266

0.255

0.255

-B

enzo

(a)p

yren

em

g/kg

0.97

3.43

0.69

60.253

0.255

1.99

0.258

0.255

0.258

0.278

0.261

2.63

0.272

0.266

0.255

0.255

-In

deno

(1,2

,3-c

d)Py

rene

mg/

kg0.

828

2.9

0.60

30.253

0.255

2.6

0.258

0.255

0.258

0.278

0.261

2.11

0.272

0.266

0.255

0.255

-D

iben

zo(a

,h)a

nthr

acen

em

g/kg

0.269

0.555

0.275

0.253

0.255

1.14

0.258

0.255

0.258

0.278

0.261

1.13

0.272

0.266

0.255

0.255

-

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

Para

met

ers

C-4

Ris

k A

rea

4 - R

evis

ed F

inal

.xls

x/Ta

ble

5Pa

ge 1

of 2

Uni

tsT

otal

Met

als

Ant

imon

ym

g/kg

Ars

enic

mg/

kgC

hrom

ium

mg/

kgC

obal

tm

g/kg

Cop

per

mg/

kgLe

adm

g/kg

EPH

C9-

C18

Alip

ahtic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

napt

hene

mg/

kgA

nthr

acen

em

g/kg

Fluo

rene

mg/

kgPh

enan

thre

nem

g/kg

Fluo

rant

hene

mg/

kgPy

rene

mg/

kgB

enzo

(g,h

,i)pe

ryle

nem

g/kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-4

TA

BL

E 5

RIS

K A

RE

A 4

- E

XC

LU

SIO

N Z

ON

ESt

atis

tical

Sum

mar

y - M

etal

s, E

PH P

aram

eter

s and

PA

Hs i

n Su

bsur

face

Soi

l (0

to 3

feet

)M

BT

A R

eadv

ille

5 Y

ard,

Ded

ham

, MA

.

Sum

mar

y St

atis

tics

742/

0.5-

3'10

16/0

-6"

1020

/0.5

-3'

1130

/0-6

"N

o. o

f

23-J

un-0

818

-Jun

-08

19-J

un-0

819

-Jun

-08

Sam

ples

Min

Max

Ave

rage

--

--

1610

63%

2.6

9912

.024

.12.

131

1325

44.3

7Y

es7

Yes

2.29

12.2

13.1

14.5

2119

90%

2.2

140

16.9

30.9

2.08

614

3157

.020

Yes

3Y

es-

--

-17

1694

%5.

747

.016

.013

.02.

120

722

.744

.640

Yes

2Y

es-

--

-17

1710

0%2

9.68

5.4

1.9

2.12

01

6.3

8.2

4Y

es15

Yes

--

--

1616

100%

1251

011

8.4

142.

02.

131

7619

438

2.5

200

Yes

3Y

es-

--

--

--

--

--

--

--

600

--

-

27.5

18.4

1615.45

205

25%

11.4

4013

.611

.02.

093

519

36.5

NA

--

Yes

27.5

18.4

1615.45

208

40%

36.7

248

41.0

58.7

2.09

327

6913

0.2

NA

--

Yes

27.5

18.4

1615.45

2010

50%

17.4

351

70.2

96.1

2.09

345

115

284.

5N

A-

--

27.5

18.4

1615.45

2010

50%

17.4

317

63.3

84.0

2.09

339

103

238.

2N

A-

-Y

es

0.1

0.3

0.1

0.1

203

15%

0.3

0.89

60.

320

0.19

62.

093

0.09

20.

40.

71

No

0N

o0.1

0.3

0.1

0.1

205

25%

0.3

1.49

0.41

90.

388

2.09

30.

182

0.6

1.3

1Y

es2

Yes

0.1

0.3

0.1

0.1

202

10%

0.3

0.58

50.

285

0.13

52.

093

0.06

30.

30.

61

No

0N

o0.1

0.1

0.1

0.1

200

0%N

DN

DN

DN

DN

DN

DN

DN

D2

ND

0N

D0.1

0.1

0.1

0.1

201

5%1.

221.

220.

294

0.24

02.

093

0.11

20.

40.

64

No

0N

o0.1

0.2

0.1

0.1

201

5%0.

20.

20.

265

0.11

62.

093

0.05

40.

30.

62

No

0N

o0.1

0.7

0.3

0.1

208

40%

0.3

5.42

0.75

71.

210

2.09

30.

566

1.3

2.2

20N

o0

No

0.1

1.2

0.3

0.4

2011

55%

0.3

8.09

1.21

41.

869

2.09

30.

875

2.1

4.2

10N

o0

No

0.1

1.3

0.4

0.4

2011

55%

0.4

6.12

1.03

21.

435

2.09

30.

672

1.7

3.5

20N

o0

No

0.1

0.4

0.1

0.1

206

30%

0.4

3.01

0.59

30.

781

2.09

30.

366

1.0

2.3

3Y

es1

Yes

0.1

0.7

0.1

0.1

207

35%

0.61

33.

490.

705

0.92

72.

093

0.43

41.

12.

89

No

0N

o0.1

10.

30.

320

1050

%0.

34.

240.

917

1.19

42.

093

0.55

91.

53.

77

No

0N

o0.1

1.2

0.2

0.4

209

45%

0.2

4.83

1.08

41.

510

2.09

30.

707

1.8

4.4

8N

o0

No

0.1

0.4

0.1

0.1

209

45%

0.4

4.61

0.93

91.

288

2.09

30.

603

1.5

4.0

4Y

es1

Yes

0.1

0.6

0.1

0.2

207

35%

0.2

3.43

0.67

90.

918

2.09

30.

430

1.1

2.7

7N

o0

No

0.1

0.5

0.1

0.1

206

30%

0.5

2.9

0.63

50.

847

2.09

30.

396

1.0

2.6

3N

o0

No

0.1

0.2

0.1

0.1

203

15%

0.2

1.14

0.33

70.

289

2.09

30.

135

0.5

1.1

1Y

es2

Yes

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

No.

of

Det

ects

Freq

uenc

yof

Det

ectio

n95

thPe

rcen

tile

Site

Max

imum

Det

ecte

dC

once

ntra

tion

Abo

veR

etai

ned

As C

OC

?

Ear

th T

ech,

Jun

e-Ju

ly 2

008

t-va

lue

95%

Con

fiden

ceIn

terv

al

Mas

sDE

PU

rban

Bac

kgro

und

Con

cent

ratio

n(F

ill S

oil

Stan

dard

Dev

iatio

n

Upp

er95

% U

CL

of

Mea

n

Num

ber

Sam

ples

Abo

ve U

rban

B

ackg

roun

d

C-4

Ris

k A

rea

4 - R

evis

ed F

inal

.xls

x/Ta

ble

5Pa

ge 2

of 2

APP

EN

DIX

C-4

TA

BL

E 6

RIS

K A

RE

A 4

- E

xclu

sion

Zon

eSt

atis

tical

Sum

mar

y - D

eep

Subs

urfa

ce S

oil (

>3 fe

et) -

AL

L D

AT

AM

etal

s, E

PH P

aram

eter

s and

PA

Hs

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

WSE

, 200

2 PH

ASE

II

HB

/GP-

14/S

-3/8

-12

EZ

/GP-

43/4

-8E

Z/G

P-8/

S-3/

8-12

EZ

/GP-

9/S-

2/4-

8SW

/GP-

11/S

-4/1

2-13

SW/G

P-12

/S-2

/4-5

EZ

/GP-

1/S-

2/4-

8E

Z/G

P-1/

S-4/

12-1

6EZ

/GP-

2/S-

4/12

-16

EZ

/GP-

3/S-

3/8-

12E

Z/G

P-3/

S-5/

16-2

0E

Z/G

P-4/

S-4/

12-1

6E

Z/G

P-5/

S-2/

4-8

EZ

/GP-

5/S-

4/12

-16

Uni

ts24

-JU

L-0

226

-JU

L-0

223

-JU

L-0

223

-JU

L-0

224

-JU

L-0

224

-JU

L-0

222

-JU

L-0

222

-JU

L-0

222

-JU

L-0

222

-JU

L-0

222

-JU

L-0

222

-JU

L-0

223

-JU

L-0

223

-JU

L-0

2M

etal

sA

ntim

ony

mg/

kg1.2

11

5.6

1.05

11

1.25

1.05

1.05

1.05

1.2

11.05

Ars

enic

mg/

kg3.

22.

31.

83.

43.

61.

62.

32.

11.

72.

75.

72.

62.

42

Bar

ium

mg/

kg70

1865

5122

3420

1536

2229

3225

20C

hrom

ium

mg/

kg15

743

8523

3.6

97.

27

7.6

7.3

117.

87

Cob

alt

mg/

kg6.

65.

55.

14.

63.

43.

25.

64.

23.

54

6.9

5.5

4.1

3.4

Cop

per

mg/

kg13

2444

6615

4.6

188.

311

1419

1019

12Le

adm

g/kg

--

--

--

--

--

--

--

EPH

C9-

C 18

Alip

ahtic

sm

g/kg

65.15

5.15

5.15

5.25

5.2

5.2

6.3

5.2

64.7

5.3

6.15

5.15

5.2

C19

-C36

Alip

hatic

sm

g/kg

65.15

93.4

5.15

5.25

5.2

5.2

6.3

5.2

5.2

5.3

6.15

5.15

5.2

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kg6

5.15

31.8

5.15

5.25

5.2

5.2

6.3

5.2

375.3

6.15

5.15

5.2

C11

-C22

Aro

mat

ics,

Adj

uste

dm

g/kg

65.15

31.8

5.15

5.25

5.2

5.2

6.3

5.2

375.3

6.15

5.15

5.2

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

2-M

ethy

lnap

htha

lene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ace

naph

thyl

ene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ace

naph

then

em

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ant

hrac

ene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Fluo

rene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Phen

anth

rene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Fluo

rant

hene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Pyre

nem

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ben

zo(g

,h,i)

pery

lene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Chr

ysen

em

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ben

zo(b

)flu

oran

then

em

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ben

zo(k

)flu

oran

then

em

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Ben

zo(a

)pyr

ene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Inde

no(1

,2,3

-cd)

Pyre

nem

g/kg

0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

Dib

enzo

(a,h

)ant

hrac

ene

mg/

kg0.301

0.258

0.258

0.258

0.263

0.261

0.261

0.317

0.261

0.261

0.266

0.309

0.258

0.261

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

Para

met

ers

C-4

Ris

k A

rea

4 - R

evis

ed F

inal

.xls

x/Ta

ble

6Pa

ge 1

of 3

Uni

tsM

etal

sA

ntim

ony

mg/

kgA

rsen

icm

g/kg

Bar

ium

mg/

kgC

hrom

ium

mg/

kgC

obal

tm

g/kg

Cop

per

mg/

kgLe

adm

g/kg

EPH

C9-

C 18

Alip

ahtic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

naph

then

em

g/kg

Ant

hrac

ene

mg/

kgFl

uore

nem

g/kg

Phen

anth

rene

mg/

kgFl

uora

nthe

nem

g/kg

Pyre

nem

g/kg

Ben

zo(g

,h,i)

pery

lene

mg/

kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-4

TA

BL

E 6

RIS

K A

RE

A 4

- E

xclu

sion

Zon

eSt

atis

tical

Sum

mar

y - D

eep

Subs

urfa

ce S

oil (

>3 fe

et) -

AL

L D

AT

AM

etal

s, E

PH P

aram

eter

s and

PA

Hs

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

WSE

, 200

2 PH

ASE

IIE

arth

Tec

h, J

une

& J

uly

2008

EZ

/GP-

6/S-

2/4-

8'H

B/G

P-13

/S-2

/4-5

HB

/GP-

14/S

-3/8

-12

EZ

/MW

104D

/10-

12'

EZ

/MW

104D

/14-

16'

P/M

W-1

06/1

0-12

'P/

MW

-107

/15-

17'

P/M

W-1

08/1

8-20

'29

6-S1

/3-5

'512

-S1/

3-5'

690-

S1/1

1-13

'79

6-S1

/13.

5'79

9-S1

/10-

15'1

075-

S1/3

-6'

410/

3-6'

1078

/3-6

'23

-Jul

-02

24-J

UL

-02

24-J

UL

-02

22-J

ul-0

222

-Jul

-02

23-J

ul-0

223

-Jul

-02

24-J

ul-0

230

-Nov

-05

2-D

ec-0

57-

Dec

-05

8-D

ec-0

512

-Dec

-05

8-D

ec-0

523

-Jun

-08

19-J

un-0

8

351

1.2

160

1.15

11.05

1.1

--

--

--

--

232.

23.

232

2.3

1.7

3.9

1.8

2.6

2.7

2.6

3.0

4.6

2.6

4.14

5.21

510

2170

460

1626

2619

16.9

52.4

20.3

73.5

87.0

38.1

--

8713

1564

5.3

8.1

8.6

4.8

0.3

0.3

0.3

0.3

0.5

0.3

--

7.6

5.2

6.6

103.

44.

13.

43.

39.

852.245

10.0

11.6

17.5

13.0

--

460

3313

2300

2316

107.

8-

--

--

--

--

--

--

--

--

--

--

--

-

53.7

5.1

6.25

72.8

5.8

5.1

5.3

11.4

--

--

--

15.45

15.4

5.4

5.1

6.25

178

5.8

12.4

2411

.4-

--

--

-15.45

15.4

765.1

6.25

182

5.8

5.1

5.3

5.7

--

--

--

15.45

15.4

65.5

5.1

6.25

175

5.8

5.1

5.3

5.7

--

--

--

15.45

15.4

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

1.39

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

1.91

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

1.62

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.54

40.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.86

30.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

1.12

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.89

60.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

1.32

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.84

40.255

0.313

7.16

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

0.269

0.255

0.313

0.347

0.291

0.255

0.266

0.284

--

--

--

0.1

0.1

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

LFR

, Dec

embe

r 20

05

C-4

Ris

k A

rea

4 - R

evis

ed F

inal

.xls

x/Ta

ble

6Pa

ge 2

of 3

Uni

tsM

etal

sA

ntim

ony

mg/

kgA

rsen

icm

g/kg

Bar

ium

mg/

kgC

hrom

ium

mg/

kgC

obal

tm

g/kg

Cop

per

mg/

kgLe

adm

g/kg

EPH

C9-

C 18

Alip

ahtic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

C11

-C22

Aro

mat

ics,

Una

djus

ted

mg/

kgC

11-C

22 A

rom

atic

s, A

djus

ted

mg/

kg

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

naph

then

em

g/kg

Ant

hrac

ene

mg/

kgFl

uore

nem

g/kg

Phen

anth

rene

mg/

kgFl

uora

nthe

nem

g/kg

Pyre

nem

g/kg

Ben

zo(g

,h,i)

pery

lene

mg/

kg

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)Py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Para

met

ers

APP

EN

DIX

C-4

TA

BL

E 6

RIS

K A

RE

A 4

- E

xclu

sion

Zon

eSt

atis

tical

Sum

mar

y - D

eep

Subs

urfa

ce S

oil (

>3 fe

et) -

AL

L D

AT

AM

etal

s, E

PH P

aram

eter

s and

PA

Hs

MB

TA

Rea

dvill

e 5

Yar

d, D

edha

m, M

A.

Sum

mar

y St

atis

tics

No.

of

Sam

ples

Min

Max

Ave

rage

223

14%

5.6

160.

010

.034

2.08

015

2533

.57

Yes

2Y

es30

2480

%1.

632

.04.

56

2.04

52

715

.220

Yes

2Y

es28

2810

0%15

510.

067

.712

02.

052

4611

432

9.4

50Y

es9

Yes

2821

75%

3.6

87.0

16.0

242.

052

925

.377

.740

Yes

4Y

es28

2693

%3.

217

.56.

24

2.05

21

7.6

12.5

4Y

es19

Yes

2222

100%

4.6

2300

.014

2.8

491

2.08

021

836

044

0.3

200

Yes

2Y

es-

--

--

--

--

--

600

--

-

244

17%

11.4

72.8

13.8

202.

069

822

63.1

NA

--

Yes

245

21%

11.4

178.

018

.538

2.06

916

3583

.0N

A-

-Y

es24

417

%31

.818

2.0

19.0

382.

069

1635

70.1

NA

--

-24

417

%31

.817

5.0

18.3

362.

069

1534

61.2

NA

--

Yes

240

ND

ND

ND

ND

ND

ND

ND

ND

ND

1N

D0

ND

240

ND

ND

ND

ND

ND

ND

ND

ND

ND

1N

D0

ND

240

ND

ND

ND

ND

ND

ND

ND

ND

ND

1N

D0

ND

240

ND

ND

ND

ND

ND

ND

ND

ND

ND

2N

D0

ND

240

ND

ND

ND

ND

ND

ND

ND

ND

ND

4N

D0

ND

240

ND

ND

ND

ND

ND

ND

ND

ND

ND

2N

D0

ND

241

4%1.

390

1.39

00.

308

0.23

72.

069

0.10

00.

408

0.34

220

No

0N

o24

14%

1.91

01.

910

0.32

90.

341

2.06

90.

144

0.47

40.

342

10N

o0

No

241

4%1.

620

1.62

00.

317

0.28

32.

069

0.11

90.

437

0.34

220

No

0N

o24

14%

0.54

40.

544

0.27

30.

080

2.06

90.

034

0.30

60.

342

3N

o0

No

241

4%0.

863

0.86

30.

286

0.13

52.

069

0.05

70.

343

0.34

29

No

0N

o24

14%

1.12

01.

120

0.29

70.

184

2.06

90.

078

0.37

40.

342

7N

o0

No

241

4%0.

896

0.89

60.

287

0.14

12.

069

0.06

00.

347

0.34

28

No

0N

o24

14%

1.32

01.

320

0.30

50.

223

2.06

90.

094

0.39

90.

342

4N

o0

No

242

8%0.

844

7.16

00.

569

1.41

02.

069

0.59

51.

164

0.76

57

Yes

1Y

es24

0N

DN

DN

DN

DN

DN

DN

DN

DN

D3

ND

0N

D24

0N

DN

DN

DN

DN

DN

DN

DN

DN

D1

ND

0N

D

NO

TE

S:m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

C-P

AH

s = C

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

NA

= N

ot a

pplic

able

.N

D =

Not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.PA

Hs =

Pol

ycly

clic

Aro

mat

ic H

ydro

carb

ons.

UC

L =

Upp

er C

onfid

ence

Lim

it.Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

95%

Con

fiden

ceIn

terv

alR

etai

ned

As C

OC

?

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

Mas

sDE

PU

rban

Bac

kgro

und

Con

cent

ratio

n(F

ill S

oil

Upp

er95

% U

CL

of

Mea

n95

thPe

rcen

tile

Num

ber

Sam

ples

Abo

ve

Urb

anB

ackg

roun

dt-

valu

eSt

anda

rdD

evia

tion

No.

of D

etec

tsFr

eque

ncy

of

Det

ectio

n

C-4

Ris

k A

rea

4 - R

evis

ed F

inal

.xls

x/Ta

ble

6Pa

ge 3

of 3

APP

EN

DIX

C-5

TA

BL

E 1

SUM

MA

RY

OF

EX

POSU

RE

PO

INT

CO

NC

EN

TR

AT

ION

S - H

OT

SPO

TS

1,2

MB

TA R

eadv

ille

5 Y

ard

Site

Rea

dvill

e an

d D

edha

m, M

A

Para

met

ers

Uni

ts

VPH

Hot

Sp

ot(A

rea

3)

EPH

Hot

Sp

ot(A

rea

3)

Lea

d H

ot

Spot

1

(Are

a 4)

Lea

d H

ot S

pot 2

(Are

a 3)

Lea

d H

ot

Spot

3

(Are

a 4)

Soils

All

Dep

ths

Sam

ple

Dep

th (f

eet)=

==>

9-11

2-4

0-0.

50-

0.5

0.5-

30-

0.5

Sam

ple

ID==

=>SA

/GP-

44H

B/G

P-24

SS1

SS22

Cel

l 637

(ET)

Cel

l 637

(LFR

)C

ell 6

39C

ell 6

37C

ell 6

39C

ell 6

92C

ell 6

93C

ell 6

94C

ell 9

06N

o. o

fSa

mpl

esN

o. o

fD

etec

tsFr

eque

ncy

o fD

etec

tion

Min

Max

Met

als

Ars

enic

mg/

kg-

--

--

22.8

70.1

-63

.669

.5-

61.6

2020

Yes

5Y

es6

610

0%20

7020

Yes

5Y

esLe

adm

g/kg

--

20,0

0015

,000

20,0

1510

,000

37,9

004,

309

7,58

049

,100

6,51

827

,500

9,52

060

0Y

es11

Yes

1111

100%

4,30

949

,100

600

Yes

11Y

es

VPH

C5-

C8

Alip

hatic

sm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

C9-

C12

Alip

hatic

sm

g/kg

193

--

--

--

--

--

--

--

--

11

100%

193

193

--

-Y

esC

9-C

10 A

rom

atic

sm

g/kg

154

--

--

--

--

--

--

--

--

11

100%

154

154

--

-Y

es

EPH

C9-

C18

Alip

hatic

sm

g/kg

1,52

060

.6-

--

-46

3-

210

83.8

-23

2-

--

-Y

es6

610

0%60

.61,

520.

0-

--

Yes

C19

-C36

Alip

hatic

sm

g/kg

500

5,60

0-

--

-3,

320

-1,

940

644

-61

099

8-

--

Yes

77

100%

500.

05,

600.

0-

--

Yes

C11

-C22

Aro

mat

ics

mg/

kg1,

660

1,19

0-

--

-1,

170

-64

919

0-

390

391

--

-Y

es7

710

0%19

0.0

1,66

0.0

--

-Y

es

Non

C-P

AH

s (m

g/kg

):N

apht

hale

nem

g/kg

1.92

1.29

--

--

0.7

-0.35

0.7

-2.

41.2

1Y

es2

Yes

74

57%

0.7

2.4

1Y

es4

Yes

2-M

ethy

lnap

htha

lene

mg/

kg5.

191.29

--

--

1.2

-0.35

0.4

-1.

51.2

1Y

es3

Yes

74

57%

0.4

5.19

1Y

es5

Yes

Ace

naph

thyl

ene

mg/

kg6.

261.29

--

--

0.3

-0.35

0.1

-0.

41.2

1Y

es1

Yes

72

29%

0.4

6.26

1Y

es3

Yes

Ace

naph

then

em

g/kg

4.67

1.29

--

--

0.3

-0.35

0.1

-0.

91.2

2Y

es1

Yes

72

29%

0.9

4.67

2Y

es1

Yes

Ant

hrac

ene

mg/

kg4.

261.29

--

--

0.3

-0.35

0.2

-0.

81.2

4Y

es1

Yes

73

43%

0.2

4.26

4Y

es1

Yes

Fluo

rene

mg/

kg5.

831.29

--

--

0.3

-0.35

0.4

-1.

81.2

2Y

es1

Yes

73

43%

0.4

5.83

2Y

es1

Yes

Phen

anth

rene

mg/

kg1.

221.29

--

--

0.6

-4

1.2

-6.

61.2

20N

o0

No

75

71%

0.6

6.6

20N

o0

No

Fluo

rant

hene

mg/

kg0.3245

1.29

--

--

0.8

-9.

91

-4

1.2

10N

o0

No

74

57%

0.8

9.9

10N

o0

No

Pyre

nem

g/kg

1.24

1.29

--

--

0.6

-9

1-

4.9

1.2

20N

o0

No

75

71%

0.6

920

No

0N

oB

enzo

(g,h

,i)pe

ryle

nem

g/kg

0.3245

1.29

--

--

0.3

-3.

20.1

-0.

61.2

3Y

es1

Yes

72

29%

0.6

3.2

3Y

es1

Yes

C-P

AH

s (m

g/kg

):B

enzo

(a)a

nthr

acen

em

g/kg

0.3245

1.29

--

--

0.3

-4.

10.

4-

0.9

1.2

9N

o0

No

73

43%

0.4

4.1

9N

o0

No

Chr

ysen

em

g/kg

0.3245

1.29

--

--

0.3

-5.

30.

5-

1.3

1.2

7N

o0

No

73

43%

0.5

5.3

7N

o0

No

Ben

zo(b

)flu

oran

then

em

g/kg

0.3245

1.29

--

--

0.3

-7.

50.

3-

0.9

1.2

8N

o0

No

73

43%

0.3

7.5

8N

o0

No

Ben

zo(k

)flu

oran

then

em

g/kg

0.3245

1.29

--

--

0.3

-2.

30.1

-0.1

1.2

4N

o0

No

71

14%

2.3

2.3

4N

o0

No

Ben

zo(a

)pyr

ene

mg/

kg0.3245

1.29

--

--

0.3

-4.

50.1

-0.

71.2

7N

o0

No

72

29%

0.7

4.5

7N

o0

No

Inde

no(1

,2,3

-cd)

Pyre

nem

g/kg

0.3245

1.29

--

--

0.3

-3.

20.1

-0.

61.2

3Y

es1

Yes

72

29%

0.6

3.2

3Y

es1

Yes

Dib

enzo

(a,h

)ant

hrac

ene

mg/

kg0.3245

1.29

--

--

1.1

-1.

40.1

-0.

31.2

1Y

es4

Yes

72

29%

0.3

1.4

1Y

es4

Yes

Not

es:

1. E

PH =

Ext

ract

able

pet

role

um h

ydro

carb

ons.

VPH

= V

olat

ile p

etro

leum

hyd

roca

rbon

s.

C

OC

= C

hem

ical

of C

once

rn fo

r the

Site

.

PA

Hs =

Pol

ycyc

lic a

rom

atic

hyd

roca

rbon

s.

C

-PA

Hs =

Car

cino

geni

c po

lycy

clic

aro

mat

ic h

ydro

carb

ons (

PAH

s).

Non

C-P

AH

s = N

on-c

arci

noge

nic

poly

cycl

ic a

rom

atic

hyd

roca

rbon

s (PA

Hs)

.

m

g/K

g =

Mill

igra

ms p

er k

ilogr

am.

NE

= N

ot e

stab

lishe

d.

Ita

lics i

ndic

ate

that

ana

lyte

was

not

det

ecte

d ab

ove

labo

rato

ry d

etec

tion

limit.

Val

ue sh

own

is o

ne-h

alf t

he re

porta

ble

dete

ctio

n lim

it.

(-)

= In

dica

tes n

ot a

naly

zed

for.

2. S

ee la

bora

tory

repo

rts fo

r add

ition

al in

form

atio

n.

Mas

sDE

PU

rban

Bac

kgro

und

Con

cent

ratio

n(F

ill S

oil

Con

tain

ing

Ash

)

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

Num

ber

Sam

ples

Abo

ve U

rban

B

ackg

roun

dR

etai

ned

As C

OC

?

Mas

sDE

PU

rban

Bac

kgro

und

Con

cent

ratio

n(F

ill S

oil

Con

tain

ing

Ash

)

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

Num

ber

Sam

ples

Abo

ve U

rban

B

ackg

roun

dR

etai

ned

As C

OC

?

C-5

Hot

Spo

t Are

as E

PCs -

Rev

ised

Fin

al.x

ls/H

ot S

pots

Page

1 o

f 1

APP

EN

DIX

C-6

TA

BL

E 1

Stat

istic

al S

umm

ary

- Sto

ckpi

le S

oil S

ampl

es -

AL

L S

AM

PLE

S ex

cept

hot

spot

s (R

-S1-

C1,

R-S

15-C

1 an

d S2

0-D

4)M

etal

s, PA

Hs,

VO

Cs a

nnd

PCB

sM

BT

A R

eadv

ille

5 Y

ard,

Ded

ham

, MA

Mas

sDE

P IH

200

2 X

RF

Lea

d D

ata

Uni

tsR

owF

2950

Row

G 2

600

Row

G 2

650

Row

G 2

700

Row

G 2

750

Row

H 2

500

Row

H 2

550

Row

H 2

600

Row

H 2

650

Row

H 2

700

Row

H 2

750

Row

H 2

8000

Row

H 2

850

Row

I 250

0R

owI 2

550

Row

I 260

0R

owI 2

650

Row

I 270

0R

owI 2

750

Row

I 280

0R

owI 2

850

Row

I 290

0R

owI 2

950

Row

J 26

00R

owJ

2750

Row

J 28

00R

owJ

2850

Row

J 29

00R

owK

250

0R

owK

255

0R

owK

260

0R

owK

295

0R

owL

295

0R

owM

280

0R

owM

285

0R

owM

290

0R

owM

295

0R

owN

280

0R

owN

285

0R

owP

2600

Row

Q 2

650

Met

als

Ars

enic

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Bar

ium

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Cad

miu

mm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-C

hrom

ium

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Lead

mg/

kg28

3613

9316

7516

0614

8027

0017

1314

9312

0319

9613

7072

2625

3630

9358

5064

413

8653

495

528

1637

7032

9343

0010

4240

9033

2316

0633

0625

1324

5624

1052

6626

215

134

949

512

131

017

981

610

37M

ercu

rym

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-Se

leni

umm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-Si

lver

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

TCLP

Lea

dm

g/l

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

Non

C-P

AH

sN

apht

hale

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-2-

Met

hyln

apht

hale

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-A

cena

phth

ylen

em

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-A

cena

phth

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Ant

hrac

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Fluo

rene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Phen

anth

rene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Fluo

rant

hene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Pyre

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-B

enzo

(g,h

,i)pe

ryle

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

C-P

AH

sB

enzo

(a)a

nthr

acen

em

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-C

hrys

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Ben

zo(b

)flu

oran

then

em

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-B

enzo

(k)f

luor

anth

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Ben

zo(a

)pyr

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Inde

no(1

,2,3

-cd)

pyre

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-D

iben

zo(a

,h)a

nthr

acen

em

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

Oth

er P

AH

sB

enzo

(e)p

yren

em

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-Pe

ryle

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-To

tal P

AH

sm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

VO

Cs

Ben

zene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Tolu

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Ethy

lben

zene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Tota

l Xyl

enes

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Nap

htha

lene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Tric

hlor

oeth

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Tetra

chlo

roet

hene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

n-B

utyl

ben

zene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

sec-

But

yl b

enze

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-Is

opro

pylb

enze

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-p-

Isop

ropy

ltolu

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

n-Pr

opyl

benz

ene

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

1,2,

4-Tr

ichl

orob

enze

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-Tr

imet

hylb

enze

nem

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

PCB

sTo

tal P

CB

sm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-

EPH

C9-

C18

Alip

hatic

sm

g/kg

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

-C

19-C

36 A

lipha

tics

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

Una

djus

ted

C11

-C22

Aro

mat

ics

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

C11

-C22

Aro

mat

ics

mg/

kg-

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

NO

TE

S:O

nly

resu

lts a

naly

tes r

etai

ned

as C

OC

s are

show

n. R

efer

to P

hase

II r

epor

t for

dis

cuss

ion

of C

OC

sele

ctio

n.m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

CO

C- C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

PAH

= P

olyc

lycl

ic A

rom

atic

Hyd

roca

rbon

s.C

-PA

H =

Car

cino

geni

c PA

Hs.

Non

C-P

AH

= N

on-c

arci

noge

nic

PAH

s.PC

Bs =

Pol

ychl

orin

ated

bip

heny

ls.

VO

Cs =

Vol

atile

Org

anic

Com

poun

ds.

UC

L - U

pper

Con

fiden

ce L

imit.

Italic

s ind

icat

e th

at a

naly

te w

as n

ot d

etec

ted

abov

e la

bora

tory

det

ectio

n lim

it. V

alue

show

n is

one

-hal

f the

repo

rtabl

e de

tect

ion

limit.

C-6

Sto

ckpi

les -

Rev

ised

Fin

al.x

ls/T

1 A

ll sa

mpl

esP

age

1 of

4

APP

EN

DIX

C-6

TA

BL

E 1

Stat

istic

al S

umm

ary

- Sto

ckpi

le S

oil S

ampl

es -

AL

L S

AM

PLE

S ex

cept

hot

spot

s (R

-S1-

C1,

R-S

15-C

1 an

d S2

0-D

4)M

etal

s, PA

Hs,

VO

Cs a

nnd

PCB

sM

BT

A R

eadv

ille

5 Y

ard,

Ded

ham

, MA

Uni

tsM

etal

sA

rsen

icm

g/kg

Bar

ium

mg/

kgC

adm

ium

mg/

kgC

hrom

ium

mg/

kgLe

adm

g/kg

Mer

cury

mg/

kgSe

leni

umm

g/kg

Silv

erm

g/kg

TCLP

Lea

dm

g/l

Non

C-P

AH

sN

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

naph

then

em

g/kg

Ant

hrac

ene

mg/

kgFl

uore

nem

g/kg

Phen

anth

rene

mg/

kgFl

uora

nthe

nem

g/kg

Pyre

nem

g/kg

Ben

zo(g

,h,i)

pery

lene

mg/

kg

C-P

AH

sB

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Oth

er P

AH

sB

enzo

(e)p

yren

em

g/kg

Pery

lene

mg/

kgTo

tal P

AH

sm

g/kg

VO

Cs

Ben

zene

mg/

kgTo

luen

em

g/kg

Ethy

lben

zene

mg/

kgTo

tal X

ylen

esm

g/kg

Nap

htha

lene

mg/

kgTr

ichl

oroe

then

em

g/kg

Tetra

chlo

roet

hene

mg/

kgn-

But

yl b

enze

nem

g/kg

sec-

But

yl b

enze

nem

g/kg

Isop

ropy

lben

zene

mg/

kgp-

Isop

ropy

ltolu

ene

mg/

kgn-

Prop

ylbe

nzen

em

g/kg

1,2,

4-Tr

ichl

orob

enze

nem

g/kg

Trim

ethy

lben

zene

mg/

kg

PCB

sTo

tal P

CB

sm

g/kg

EPH

C9-

C18

Alip

hatic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

Una

djus

ted

C11

-C22

Aro

mat

ics

mg/

kgC

11-C

22 A

rom

atic

sm

g/kg

Wes

ton

& S

amps

on, 2

002

Ear

th T

ech,

200

8

R-S

2-C

1R

-S3-

C1

R-S

4-C

1R

-S4-

C2

R-S

5-C

1R

-S5-

C2

R-S

5-C

3R

-S6-

C1

R-S

6-C

2R

-S7-

C1

R-S

8-C

4R

-S8-

C5

R-S

8-C

6R

-S8-

C7

R-S

8-C

8R

-S8-

C9

R-S

8-C

10R

-S8-

C12

R-S

9-C

1R

-S10

-C3

R-S

11-C

1R

-S12

-C1

R-S

13-C

1R

-S14

-C1

S03-

A-1

S03-

A-2

S04-

A-1

S04-

A-2

S04-

A-3

S04-

A-4

S05-

A-1

S05-

A-2

S05-

A-3

S05-

A-4

S05-

B-1

S05-

B-2

S05-

B-3

S05-

B-4

S05-

C-1

S05-

C-2

S05-

C-3

S06-

A-1

S06-

A-2

S06-

A-3

S06-

A-4

S06-

B-1

S06-

B-2

3.6

219.

611

912

6.5

4020

1622

1514

1932

2221

1227

6.2

1617

104.

716

.714

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.37.

27.

97.

918.

9310

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.310

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.56.

238.

028.

0411

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.913

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.620

.422

.960

6648

4433

5232

7270

220

310

330

300

700

770

630

490

290

250

7039

077

6225

--

--

--

--

--

--

--

--

--

--

--

-0.21

0.69

0.22

0.48

0.205

0.46

0.21

0.75

0.79

1.2

5.9

4.3

3.9

1212

1116

4.9

0.57

0.64

3.8

0.76

0.68

0.21

--

--

--

--

--

--

--

--

--

--

--

-12

1112

1215

1415

2115

3244

3540

6510

011

011

034

1611

3418

216

--

--

--

--

--

--

--

--

--

--

--

-11

038

019

024

012

022

013

063

048

025

0050

0013

001,

400

3600

12,0

005,

200

3,00

01,

600

3100

340

1400

280

350

5439

243

117

935

654

153

620

423

625

625

425

326

223

120

211

618

112

123

915

032

224

145

361

20.

160.

130.

180.

190.

290.

170.

090.

130.

290.

180.

854.

70.

921.

11.

44

20.

810.

120.

110.

330.

220.

190.04

--

--

--

--

--

--

--

--

--

--

--

-0.42

0.42

0.445

0.435

0.415

0.425

0.42

0.48

0.42

0.43

0.55

1.15

1.15

1.25

2.6

2.45

2.2

0.415

0.47

0.415

0.43

0.44

0.435

0.415

--

--

--

--

--

--

--

--

--

--

--

-0.21

0.21

0.22

0.22

0.205

0.21

0.21

0.24

0.21

0.47

1.2

0.94

12.

42.6

2.45

2.2

10.235

0.205

0.74

0.22

0.215

0.21

--

--

--

--

--

--

--

--

--

--

--

-

0.25

0.53

0.65

0.25

0.25

0.25

0.25

0.25

0.69

3.2

3.6

1.5

0.89

1.3

2.9

4.3

2.8

4.7

200.

513

0.25

0.25

-0.

295

0.21

40.

280.

328

0.74

60.

467

0.28

30.

181

0.72

60.

187

1.86

0.30

80.

164

0.16

50.

129

0.06

60.

128

0.12

80.

106

0.94

40.

259

0.33

10.

647

0.550

0.130

0.550

0.550

0.500

0.265

0.550

0.600

0.550

0.550

1.700

0.550

0.600

0.650

0.650

0.600

0.550

0.650

0.300

0.50

0.55

0.55

0.55

0.50

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.15

0.1

0.15

0.15

0.1

0.1

0.1

0.15

0.15

0.1

0.1

0.1

0.1

0.850

0.850

0.900

0.900

0.850

0.425

0.850

1.000

0.850

0.850

2.750

0.900

0.950

1.000

1.050

1.000

0.900

1.1

0.475

0.85

0.85

0.90

0.90

0.85

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.15

0.1

0.15

0.15

0.1

0.1

0.1

0.15

0.15

0.1

0.1

0.2

0.1

0.550

0.550

1.8

0.550

0.500

0.265

0.550

0.600

0.550

0.550

1.700

0.550

3.1

0.650

0.650

0.600

0.550

1.7

0.300

0.50

0.55

0.55

0.55

0.50

0.1

0.1

0.5

0.5

0.3

0.3

0.3

0.3

0.2

0.3

0.15

0.3

0.15

0.15

0.1

0.3

0.3

0.15

0.15

0.1

0.1

0.3

0.2

0.550

0.650

0.550

0.550

0.500

0.265

0.550

0.600

0.550

0.550

1.700

0.550

0.600

0.650

0.650

0.600

0.550

0.500

0.300

0.50

0.55

0.55

0.55

0.55

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.3

0.1

0.3

0.3

0.1

0.1

0.1

0.15

0.15

0.1

0.1

0.1

0.1

0.550

0.550

2.1

1.3

0.500

0.78

0.550

0.600

0.550

0.550

1.700

1.5

3.3

0.650

0.650

1.7

1.9

3.9

0.300

0.50

1.2

1.3

0.55

0.50

0.1

0.1

0.4

0.5

0.4

0.3

0.6

0.5

0.3

0.3

0.4

0.5

0.6

0.4

0.2

0.3

0.3

0.15

0.15

0.1

0.2

0.6

0.2

0.550

0.550

0.550

0.550

0.500

0.265

0.550

0.600

0.550

0.550

1.700

0.550

0.600

0.650

0.650

0.600

0.550

0.500

0.300

0.50

0.55

0.55

0.55

0.50

0.1

0.1

0.1

0.1

0.1

0.1

0.3

0.1

0.1

0.1

0.15

0.2

0.15

0.15

0.1

0.1

0.1

0.15

0.15

0.1

0.1

0.2

0.1

0.550

0.550

7.5

5.3

0.500

2.1

0.550

0.600

20.550

3.5

2.7

4.1

2.8

2.6

5.9

3.3

121.

30.50

2.1

2.2

0.55

0.50

0.3

0.2

1.1

1.2

20.

92.

21.

70.

90.

91.

41.

92.

41.

30.

40.

50.

60.

91

0.6

0.6

1.8

0.7

32.

412

82.

84.

81.

51.

93.

72.

66.

26.

814

5.9

5.5

1211

212.

11.

66.

45.

60.55

1.8

0.8

0.5

4.1

54.

72.

94.

23.

52.

42.

52.

83.

74.

32.

81.

52.

12.

42.

12.

41.

51.

64.

12.

12.

92.

312

8.1

2.6

4.1

1.5

1.8

3.2

2.2

1.700

5.9

135.

44.

711

9.5

201.

71.

46

5.3

0.55

1.9

0.8

0.5

4.1

5.2

4.6

3.2

3.9

3.4

2.4

2.4

2.7

3.6

4.4

2.7

1.6

2.4

2.7

2.1

2.3

1.5

1.6

3.6

1.9

1.5

0.55

3.4

2.2

1.2

1.3

0.550

0.60

1.1

0.55

1.700

2.6

5.4

2.1

1.6

3.2

2.5

4.6

0.7

0.50

21.

80.55

0.50

0.3

0.1

1.3

1.4

11.

21.

21.

21

0.9

0.8

1.2

1.4

0.7

0.9

1.1

1.4

11

0.5

0.6

0.8

0.5

1.8

1.8

6.3

3.7

1.5

2.1

0.550

0.60

1.7

1.1

1.700

3.6

7.3

3.3

2.8

5.6

5.7

8.8

10.50

3.1

2.5

0.55

0.50

0.4

0.3

1.9

2.1

1.7

1.7

21.

81.

31.

31.

31.

82.

11.

31

1.5

1.7

1.1

1.3

0.8

0.9

1.6

0.9

2.1

27.

44.

31.

82.

40.550

1.4

2.1

1.6

4.3

4.3

8.6

3.8

3.1

6.3

6.1

101.

30.50

4.2

3.3

0.55

1.3

0.6

0.4

2.4

2.7

2.3

2.2

2.2

2.1

1.6

1.5

1.5

2.1

2.4

1.5

1.1

1.6

1.8

1.3

1.5

11.

12

1.2

2.2

1.9

6.1

3.3

1.9

2.1

1.2

1.4

1.9

1.5

44.

18.

63.

52.

85.

65

9.9

1.2

0.50

3.6

3.2

0.55

10.

80.

63.

74.

63.

12.

83

2.9

2.3

2.2

22.

73

21.

82.

63

22.

41.

41.

42.

41.

52.

11.

85.

73.

51.

62

0.550

1.3

1.7

1.2

1.700

3.8

7.3

3.7

2.5

4.9

4.8

7.4

10.50

3.7

2.7

0.55

1.2

0.3

0.1

1.4

1.6

1.1

11

10.

80.

80.

80.

91.

20.

70.

70.

91.

10.

70.

80.

50.

60.

90.

62

1.5

4.8

3.3

1.5

1.9

0.550

0.60

1.4

1.1

1.700

3.4

6.7

3.3

2.3

54.

27.

30.

90.50

2.9

2.3

0.55

1.1

0.4

0.3

22.

41.

71.

61.

91.

91.

41.

31.

31.

72

1.2

1.1

1.5

1.8

11.

20.

80.

81.

30.

81.

60.55

3.5

2.2

1.1

1.2

0.550

0.60

1.1

0.550

1.700

2.5

4.9

2.1

1.6

32.

747

0.7

0.50

1.9

1.8

0.55

0.50

0.3

0.1

1.3

1.5

11.

11.

51.

41.

11.

10.

91.

21.

30.

81

1.2

1.5

0.9

10.

60.

61

0.6

0.550

0.550

1.2

0.550

0.50

0.265

0.550

0.60

0.550

0.550

1.700

0.55

1.6

0.65

0.650

0.600

0.550

1.6

0.30

0.50

0.55

0.55

0.55

0.50

0.1

0.1

0.3

0.4

0.3

0.4

0.4

0.4

0.3

0.3

0.15

0.4

0.5

0.15

0.3

0.4

0.4

0.4

0.3

0.1

0.2

0.3

0.1

1.7

1.4

4.5

2.7

1.3

1.5

0.55

0.60

1.4

0.55

0.17

32

2.6

23.

83.

56.

10.

80.50

2.6

2.2

0.55

0.50

--

--

--

--

--

--

--

--

--

--

--

-0.550

0.550

1.2

0.550

0.50

0.265

0.55

0.60

0.550

0.550

0.17

0.55

60.65

0.650

1.3

0.550

20.30

0.50

0.55

0.55

0.55

0.50

--

--

--

--

--

--

--

--

--

--

--

-15

1241

2412

146

812

917

2653

2418

3633

100

85

2319

57

32

1315

1111

1212

99

811

138

710

117

95

610

6

0.06

10.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.

10.039

0.1

0.055

0.043

0.05

0.048

0.0365

0.11

0.075

0.105

0.06

0.07

0.06

0.075

0.06

0.05

0.0435

0.05

0.12

0.055

0.55

0.044

0.0425

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.11

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.

061

0.026

0.08

90.035

0.0285

0.033

0.032

0.0245

0.09

10.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.08

30.

095

0.84

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.

630.13

0.78

0.18

0.14

0.165

0.16

0.12

0.67

0.25

0.355

0.74

3.3

0.91

0.25

0.75

0.17

0.145

0.175

0.145

0.185

0.20

0.145

0.14

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.14

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.62

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.0295

0.026

0.032

0.035

0.0285

0.033

0.032

0.0245

0.345

0.0495

0.07

0.0405

0.048

0.042

0.0495

0.0415

0.034

0.029

0.035

0.0285

0.365

0.0405

0.0295

0.0285

--

--

--

--

--

--

--

--

--

--

--

-0.145

0.13

0.61

0.18

0.14

0.165

0.16

0.12

0.175

0.25

0.355

0.205

0.24

0.21

0.25

0.205

0.17

0.145

0.175

0.145

0.185

0.20

0.145

0.14

--

--

--

--

--

--

--

--

--

--

--

-0.145

0.13

0.16

0.18

0.14

0.165

0.16

0.12

0.175

0.25

0.355

0.205

0.24

0.21

0.25

0.205

0.17

0.145

0.175

0.145

0.185

0.20

0.145

0.14

--

--

--

--

--

--

--

--

--

--

--

-

0.1075

0.1065

9.5

3.9

1.1

0.3

0.1065

0.122

0.1065

0.1085

0.137

0.115

0.93

0.128

24.2

2.9

2.2

2.2

0.119

0.104

0.1085

0.111

0.11

0.105

--

--

--

--

--

--

--

--

--

--

--

-

--

--

--

--

--

--

--

--

--

-15.9

15.65

15.55

15.55

16.7

16.5

15.55

15.75

15.65

15.6

32.2

16.3

33.05

31.95

15.75

15.75

15.95

31.75

31.55

15.9

1616

15.75

--

--

--

--

--

--

--

--

--

-31

.915.65

15.55

38.9

37.4

16.5

15.55

70.7

15.65

31.2

117

38.2

69.6

69.3

15.75

42.9

40.2

8273

.233

.741

.542

.432

.2-

--

--

--

--

--

--

--

--

--

76.6

57.5

112

141

140

108

104

153

97.2

91.6

165

130

199

170

94.4

114

122

179

169

81.9

9612

289

.3-

--

--

--

--

--

--

--

--

--

71.1

54.2

86.7

112

115

88.6

79.1

131

8175

.414

910

817

315

482

.597

.210

316

615

471

.585

.610

077

.5

NO

TE

S:O

nly

resu

lts a

naly

tes r

etai

ned

as C

OC

s are

show

n. R

efer

to P

hase

II r

epor

t for

dis

cuss

ion

of C

OC

sele

ctio

n.m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

CO

C- C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

PAH

= P

olyc

lycl

ic A

rom

atic

Hyd

roca

rbon

s.C

-PA

H =

Car

cino

geni

c PA

Hs.

Non

C-P

AH

= N

on-c

arci

noge

nic

PAH

s.PC

Bs =

Pol

ychl

orin

ated

bip

heny

ls.

VO

Cs =

Vol

atile

Org

anic

Com

poun

ds.

UC

L - U

pper

Con

fiden

ce L

imit.

Italic

s ind

icat

e th

at a

naly

te w

as n

ot d

etec

ted

abov

e la

bora

tory

det

ectio

n lim

it. V

alue

show

n is

one

-hal

f the

repo

rtabl

e de

tect

ion

limit.

C-6

Sto

ckpi

les -

Rev

ised

Fin

al.x

ls/T

1 A

ll sa

mpl

esP

age

2 of

4

APP

EN

DIX

C-6

TA

BL

E 1

Stat

istic

al S

umm

ary

- Sto

ckpi

le S

oil S

ampl

es -

AL

L S

AM

PLE

S ex

cept

hot

spot

s (R

-S1-

C1,

R-S

15-C

1 an

d S2

0-D

4)M

etal

s, PA

Hs,

VO

Cs a

nnd

PCB

sM

BT

A R

eadv

ille

5 Y

ard,

Ded

ham

, MA

Uni

tsM

etal

sA

rsen

icm

g/kg

Bar

ium

mg/

kgC

adm

ium

mg/

kgC

hrom

ium

mg/

kgLe

adm

g/kg

Mer

cury

mg/

kgSe

leni

umm

g/kg

Silv

erm

g/kg

TCLP

Lea

dm

g/l

Non

C-P

AH

sN

apht

hale

nem

g/kg

2-M

ethy

lnap

htha

lene

mg/

kgA

cena

phth

ylen

em

g/kg

Ace

naph

then

em

g/kg

Ant

hrac

ene

mg/

kgFl

uore

nem

g/kg

Phen

anth

rene

mg/

kgFl

uora

nthe

nem

g/kg

Pyre

nem

g/kg

Ben

zo(g

,h,i)

pery

lene

mg/

kg

C-P

AH

sB

enzo

(a)a

nthr

acen

em

g/kg

Chr

ysen

em

g/kg

Ben

zo(b

)flu

oran

then

em

g/kg

Ben

zo(k

)flu

oran

then

em

g/kg

Ben

zo(a

)pyr

ene

mg/

kgIn

deno

(1,2

,3-c

d)py

rene

mg/

kgD

iben

zo(a

,h)a

nthr

acen

em

g/kg

Oth

er P

AH

sB

enzo

(e)p

yren

em

g/kg

Pery

lene

mg/

kgTo

tal P

AH

sm

g/kg

VO

Cs

Ben

zene

mg/

kgTo

luen

em

g/kg

Ethy

lben

zene

mg/

kgTo

tal X

ylen

esm

g/kg

Nap

htha

lene

mg/

kgTr

ichl

oroe

then

em

g/kg

Tetra

chlo

roet

hene

mg/

kgn-

But

yl b

enze

nem

g/kg

sec-

But

yl b

enze

nem

g/kg

Isop

ropy

lben

zene

mg/

kgp-

Isop

ropy

ltolu

ene

mg/

kgn-

Prop

ylbe

nzen

em

g/kg

1,2,

4-Tr

ichl

orob

enze

nem

g/kg

Trim

ethy

lben

zene

mg/

kg

PCB

sTo

tal P

CB

sm

g/kg

EPH

C9-

C18

Alip

hatic

sm

g/kg

C19

-C36

Alip

hatic

sm

g/kg

Una

djus

ted

C11

-C22

Aro

mat

ics

mg/

kgC

11-C

22 A

rom

atic

sm

g/kg

Ear

th T

ech,

200

8

S06-

B-3

S07-

A-1

S07-

A-2

S07-

A-3

S07-

B-1

S07-

B-2

S07-

B-3

S08-

A-1

S08-

A-2

S08-

A-3

S09-

A-1

S09-

A-2

S09-

B-1

S10-

A-1

S10-

A-2

S10-

A-3

S10-

A-4

S10-

B-1

S10-

B-2

S10-

B-3

S10-

C-1

S10-

C-2

S10-

C-3

S09-

B-2

S16-

A-1

S16-

A-2

S16-

B-1

S16-

B-2

S16-

C-1

S16-

C-2

S16-

D-1

S16-

D-2

S16-

E-1

S16-

E-2

S16-

F-1

S16-

F-2

S17-

A-1

S17-

A-2

S17-

A-3

S18-

A-1

S18-

A-2

S18-

A-3

S19-

A-1

S19-

A-2

S20-

A-1

S20-

A-2

S20-

A-3

S20-

A-4

S20-

B-1

S20-

B-2

21.6

21.8

16.7

2122

.414

.919

.117

.923

.213

.841

.643

.524

.515

.316

22.9

15.5

8.88

9.28

11.6

13.2

13.6

14.5

23.4

33.4

3624

.320

.618

.417

.524

.120

.531

.919

.513

.914

.823

.716

.615

.320

.828

.620

.116

.521

.223

23.5

15.8

29.1

17.8

15.7

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

469

228

192

1350

496

267

395

4110

1670

1090

3500

3520

7220

1290

3540

1340

1110

590

1730

710

1350

1160

2260

3510

3390

7830

1270

987

793

1050

1310

1300

1200

1080

1110

2220

3420

2120

2240

1250

1520

2390

2080

2100

8180

2980

1480

1760

1880

1720

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

0.74

40.

060.

447

1.42

0.10

60.

216

0.60

79.

61.

870.

583

3.98

6.61

11.3

1.48

1.29

2.54

1.12

4.23

3.43

31.8

0.18

32.

431.

2311

.83.

791.

711.

850.

867

1.38

1.25

1.96

1.87

3.97

1.59

2.06

1.77

6.03

2.34

3.86

1.71

4.86

34.4

3.45

3.46

2.57

11.9

3.64

1.87

1.27

2.01

0.1

0.5

0.55

0.3

4.6

0.3

0.3

0.4

0.3

0.5

0.4

0.3

0.2

0.3

0.3

0.3

0.3

0.55

0.55

0.6

0.25

0.3

0.3

0.2

0.3

0.2

0.2

0.3

0.2

0.2

20.

30.1

0.1

0.5

0.3

0.4

0.3

0.4

0.1

0.3

0.5

0.5

0.2

0.3

0.3

0.3

0.3

0.3

0.3

0.1

0.5

0.55

0.4

1.2

0.3

0.6

0.4

0.3

0.5

0.3

0.2

0.2

0.3

0.3

0.3

0.3

0.55

0.55

0.6

0.25

0.3

0.3

0.2

0.3

0.2

0.2

0.3

0.2

0.2

0.8

0.3

0.1

0.1

0.5

0.4

0.4

0.3

0.4

0.1

0.3

0.4

0.6

0.2

0.3

0.3

0.3

0.3

0.3

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50.

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31

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62.

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1.7

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11

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0.9

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0.9

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.815

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1.9

1.9

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0.7

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1.8

1.4

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1.9

1.2

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11.

61.

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0.8

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0.8

0.4

0.5

0.9

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0.4

0.5

0.3

0.8

0.4

0.25

0.3

0.6

0.3

0.3

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0.9

0.7

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15.7

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163.5

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8216

1616.2

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15.75

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NO

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nly

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lts a

naly

tes r

etai

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as C

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show

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dis

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gram

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ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

CO

C- C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

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role

um H

ydro

carb

ons.

PAH

= P

olyc

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rom

atic

Hyd

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H =

Car

cino

geni

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on-c

arci

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nic

PAH

s.PC

Bs =

Pol

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orin

ated

bip

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ls.

VO

Cs =

Vol

atile

Org

anic

Com

poun

ds.

UC

L - U

pper

Con

fiden

ce L

imit.

Italic

s ind

icat

e th

at a

naly

te w

as n

ot d

etec

ted

abov

e la

bora

tory

det

ectio

n lim

it. V

alue

show

n is

one

-hal

f the

repo

rtabl

e de

tect

ion

limit.

C-6

Sto

ckpi

les -

Rev

ised

Fin

al.x

ls/T

1 A

ll sa

mpl

esP

age

3 of

4

APP

EN

DIX

C-6

TA

BL

E 1

Stat

istic

al S

umm

ary

- Sto

ckpi

le S

oil S

ampl

es -

AL

L S

AM

PLE

S ex

cept

hot

spot

s (R

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C1,

R-S

15-C

1 an

d S2

0-D

4)M

etal

s, PA

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VO

Cs a

nnd

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etal

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g/kg

Bar

ium

mg/

kgC

adm

ium

mg/

kgC

hrom

ium

mg/

kgLe

adm

g/kg

Mer

cury

mg/

kgSe

leni

umm

g/kg

Silv

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g/kg

TCLP

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dm

g/l

Non

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g/kg

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ethy

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mg/

kgA

cena

phth

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em

g/kg

Ace

naph

then

em

g/kg

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ene

mg/

kgFl

uore

nem

g/kg

Phen

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mg/

kgFl

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nthe

nem

g/kg

Pyre

nem

g/kg

Ben

zo(g

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pery

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mg/

kg

C-P

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(a)a

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g/kg

Chr

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g/kg

Ben

zo(b

)flu

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then

em

g/kg

Ben

zo(k

)flu

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then

em

g/kg

Ben

zo(a

)pyr

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mg/

kgIn

deno

(1,2

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rene

mg/

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iben

zo(a

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g/kg

Oth

er P

AH

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(e)p

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em

g/kg

Pery

lene

mg/

kgTo

tal P

AH

sm

g/kg

VO

Cs

Ben

zene

mg/

kgTo

luen

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g/kg

Ethy

lben

zene

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kgTo

tal X

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kgTr

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sec-

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1,2,

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Trim

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EPH

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C18

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C19

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Una

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mg/

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11-C

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Ear

th T

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200

8Su

mm

ary

Stat

istic

s

S20-

B-3

S20-

B-4

S20-

C-1

S20-

C-2

S20-

C-3

S20-

D-1

S20-

D-2

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S21-

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S21-

A-2

S21-

A-3

S22-

A-1

S22-

A-2

S22-

A-3

No.

of

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ples

No.

of

Det

ects

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uenc

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Det

ectio

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inM

axA

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% U

CL

of

Mea

n95

thPe

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1720

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111

110

0%3.

643

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71.

982

1.46

19.6

32.4

20Y

es43

Yes

--

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2424

100%

2577

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4.6

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82.

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Yes

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1979

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Yes

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2410

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110

33.5

31.4

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913

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108.

540

Yes

5Y

es18

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8012

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7019

5022

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2047

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2396

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1.3

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1Y

es5

Yes

--

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--

240

0%-

--

--

--

-1

--

No

--

--

--

--

--

--

--

245

21%

0.47

2.6

0.8

0.8

2.06

90.

351.

12.

45

No

0N

o

1.95

2.77

1.29

2.54

1.52

2.37

2.81

1.62

4.35

3.15

2.8

0.59

28.

422.

0511

010

293

%0.

0634

.42.

85.

11.

982

0.96

3.7

10.5

--

-N

o

0.2

0.2

0.2

0.2

0.2

0.5

0.5

0.6

0.1

0.1

0.1

0.1

0.2

0.2

111

3733

%0.

24.

60.

40.

51.

982

0.09

0.5

0.6

1Y

es3

Yes

0.2

0.2

0.2

0.2

0.2

0.5

0.25

0.6

0.1

0.1

0.1

0.2

0.2

0.3

111

3935

%0.

22.

750.

40.

41.

982

0.07

0.5

1.0

1Y

es4

Yes

0.3

0.3

0.3

0.2

0.3

1.2

0.9

1.3

0.5

0.3

0.4

0.3

0.3

0.4

111

6962

%0.

23.

30.

60.

51.

982

0.10

0.7

1.7

1Y

es11

Yes

0.2

0.3

0.1

0.1

0.1

0.25

0.25

0.5

0.1

0.1

0.1

0.1

0.1

0.1

111

1413

%0.

22.

50.

30.

31.

982

0.06

0.4

0.6

2Y

es1

Yes

0.6

0.8

0.3

0.4

0.9

1.1

0.8

2.9

0.6

0.4

0.5

0.4

0.5

0.6

111

8072

%0.

26.

40.

91.

01.

982

0.18

1.0

2.9

4Y

es3

Yes

0.3

0.4

0.1

0.2

0.2

0.25

0.25

1.2

0.2

0.1

0.1

0.1

0.2

0.2

111

3935

%0.

22.

90.

40.

41.

982

0.08

0.5

0.9

2Y

es2

Yes

3.2

4.3

0.9

1.8

1.1

2.9

2.5

9.8

1.7

1.2

1.2

1.5

2.6

211

110

090

%0.

234

.52.

74.

01.

982

0.76

3.5

8.8

20Y

es1

Yes

6.4

8.3

3.3

4.3

4.8

14.3

9.9

20.2

4.7

3.5

4.4

3.9

5.4

5.4

111

110

99%

0.5

40.1

6.4

6.4

1.98

21.

207.

620

.610

Yes

16Y

es6.

28

3.4

4.4

4.7

15.2

9.8

19.6

4.6

3.4

4.4

3.8

5.2

5.3

111

109

98%

0.5

366.

15.

91.

982

1.10

7.2

19.8

20Y

es5

Yes

1.6

1.9

11.

11.

33.

92.

64.

81.

41.

11.

31.

11.

31.

411

198

88%

0.3

6.7

1.7

1.3

1.98

20.

241.

94.

73

Yes

11Y

es

2.9

3.7

1.7

2.1

2.3

5.7

3.5

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2.4

1.7

2.2

1.6

22.

211

110

595

%0.

313

.42.

82.

61.

982

0.48

3.3

8.1

9Y

es5

Yes

3.6

4.5

2.2

2.5

2.9

7.6

4.7

9.5

2.7

22.

62

2.6

2.7

111

108

97%

0.4

15.8

3.5

3.0

1.98

20.

564.

09.

87

Yes

10Y

es4.

55.

32.

93.

23.

612

.47.

414

.13.

72.

83.

33

3.5

4.2

111

109

98%

0.6

20.2

4.4

3.5

1.98

20.

675.

113

.38

Yes

10Y

es1.

62

1.1

1.1

1.2

4.6

2.9

5.1

1.4

0.9

1.3

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1.2

1.6

111

104

94%

0.3

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1.9

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1.98

20.

302.

25.

74

Yes

12Y

es2.

63.

11.

51.

81.

86.

13.

87.

62.

21.

51.

91.

72.

12.

411

110

494

%0.

311

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52.

01.

982

0.37

2.9

7.2

7Y

es7

Yes

22.

41.

11.

31.

43.

92.

64.

91.

71.

21.

41.

11.

31.

411

199

89%

0.3

472.

24.

51.

982

0.85

3.0

4.9

3Y

es10

Yes

0.6

0.7

0.4

0.4

0.4

1.1

0.7

1.2

0.5

0.4

0.4

0.3

0.4

0.4

111

6760

%0.

22.

70.

60.

41.

982

0.08

0.6

1.6

1Y

es10

Yes

--

--

--

--

--

--

--

2417

71%

0.8

6.1

1.9

1.5

2.06

90.

622.

64.

4--

----

No

--

--

--

--

--

--

--

244

17%

1.2

60.

91.

22.

069

0.49

1.4

1.9

----

--N

o18

2211

1214

4126

5015

1113

1113

1511

122

20%

510

0.1

18.5

16.1

1.98

23.

0321

.553

.6--

----

No

--

--

--

--

--

--

--

241

4%0.

061

0.06

10.

10.

12.

069

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----

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--

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521

%0.

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550.

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12.

069

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0.1

----

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es-

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--

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0.1

2.06

90.

040.

10.

3--

----

No

--

--

--

--

--

--

--

246

25%

0.06

10.

840.

10.

22.

069

0.07

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----

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--

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--

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729

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633.

30.

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72.

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es1

Yes

--

--

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241

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140.

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----

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0.62

0.62

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0.1

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10.

4--

----

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--

--

--

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240

0%-

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240

0%-

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0%-

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240

0%-

--

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--

--

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241

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610.

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12.

069

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--

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00%

--

--

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--

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o

--

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--

--

--

--

249

38%

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2.0

5.2

2.06

92.

184.

28.

7--

----

Yes

16.85

16.8

16.25

16.65

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988

8.14

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16.8

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206

190

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83.2

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293

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53.6

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80.4

164.

9--

----

Yes

134

164

110

119

124

453

352

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153

134

153

117

173

163

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99%

57.5

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198.

211

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1.98

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222.

648

4.5

----

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o76

.111

789

.694

96.2

373

298

400

124

113

127

9514

313

287

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%54

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216

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88.2

1.98

818

.80

181.

336

3.8

----

--Y

es

NO

TE

S:O

nly

resu

lts a

naly

tes r

etai

ned

as C

OC

s are

show

n. R

efer

to P

hase

II r

epor

t for

dis

cuss

ion

of C

OC

sele

ctio

n.m

g/kg

= m

illig

ram

s per

kilo

gram

, whi

ch is

equ

ival

ent t

o pa

rts p

er m

illio

n (p

pm).

CO

C- C

hem

ical

of C

once

rn fo

r the

Site

.EP

H =

Ext

ract

able

Pet

role

um H

ydro

carb

ons.

PAH

= P

olyc

lycl

ic A

rom

atic

Hyd

roca

rbon

s.C

-PA

H =

Car

cino

geni

c PA

Hs.

Non

C-P

AH

= N

on-c

arci

noge

nic

PAH

s.PC

Bs =

Pol

ychl

orin

ated

bip

heny

ls.

VO

Cs =

Vol

atile

Org

anic

Com

poun

ds.

UC

L - U

pper

Con

fiden

ce L

imit.

Italic

s ind

icat

e th

at a

naly

te w

as n

ot d

etec

ted

abov

e la

bora

tory

det

ectio

n lim

it. V

alue

show

n is

one

-hal

f the

repo

rtabl

e de

tect

ion

limit.

Ret

aine

d A

s C

OC

?

Mas

sDE

P U

rban

B

ackg

roun

dC

once

ntra

tion

(Fill

So

il C

onta

inin

g A

sh)

Site

Max

imum

D

etec

ted

Con

cent

ratio

nA

bove

Bac

kgro

und?

Num

ber

Sam

ples

Abo

ve U

rban

B

ackg

roun

d

C-6

Sto

ckpi

les -

Rev

ised

Fin

al.x

ls/T

1 A

ll sa

mpl

esP

age

4 of

4

APPENIDX C-7TABLE 1

Statistical Summary - Site Wide Surface Soil & Stockpile Soil Samples EPCs for Fugitive Dust EvaluationsMBTA Readville 5 Yard, Dedham, MA.

Summary StatisticsNo. of Standard

Units Samples Min Max Average Deviation

MetalsAntimony mg/kg 8 7 88% 4.3 39.0 11.9 11.6 2.365 9.7 21.6 7 Yes YesArsenic mg/kg 199 197 99% 3.6 330.0 35.6 46.7 1.972 6.5 42.2 20 Yes YesBarium mg/kg 57 57 100% 42.0 5,430.0 441.2 965.3 2.003 256.1 697.3 50 Yes YesCadmium mg/kg 26 20 77% 0.2 16.0 3.2 4.5 2.060 1.8 5.0 3 Yes YesChromium mg/kg 57 57 100% 6.0 127.0 38.0 32.2 2.003 8.5 46.5 40 Yes YesCobalt mg/kg 18 18 100% 2.6 7.3 4.8 1.2 2.110 0.6 5.4 4 Yes YesCopper mg/kg 8 8 100% 29.0 290.0 151.9 111.7 2.365 93.4 245.3 200 Yes YesLead mg/kg 1032 1005 97% 12.6 37,900.0 1,227.4 2,534.8 1.962 154.8 1,382.2 600 Yes YesMercury mg/kg 26 25 96% 0.1 4.7 0.7 1.2 2.060 0.5 1.2 1 Yes YesNickel mg/kg 5 5 100% 7.8 15.0 12.0 2.8 2.8 3.5 15.5 30 No NoSelenium mg/kg 26 0 0% ND ND ND ND ND ND ND 1 - NoSilver mg/kg 26 0 0% ND ND ND ND ND ND ND 5 - NoZinc mg/kg 5 5 100% 46.0 1,100.0 400.8 467.9 2.8 580.9 981.7 300 Yes Yes

VPHC5-C8 Aliphatics mg/kg - - - - - - - - - - NA - NoC9-C12 Aliphatics mg/kg - - - - - - - - - - NA - NoC9-C10 Aromatics mg/kg - - - - - - - - - - NA - No

EPHC9-C18 Aliphatics mg/kg 109 5 5% 13 463 41 67 1.982 12.7 54.2 NA - YesC19-C36 Aliphatics mg/kg 110 67 61% 31 3,320 109 329 1.982 62.2 171.2 NA - YesC11-C22 Aromatics mg/kg 110 106 96% 54 2,760 185 282 1.982 53.2 238.7 NA - Yes

Non C-PAHsNaphthalene mg/kg 136 40 29% 0.2 10.6 0.5 1.0 1.978 0.2 0.6 1 Yes Yes2-Methylnaphthalene mg/kg 136 43 32% 0.2 5.6 0.5 0.6 1.978 0.1 0.6 1 Yes YesAcenaphthylene mg/kg 136 75 55% 0.2 7.9 0.6 0.9 1.978 0.1 0.8 1 Yes YesAcenaphthene mg/kg 136 15 11% 0.2 35.4 0.6 3.0 1.978 0.5 1.1 2 Yes YesAnthracene mg/kg 136 87 64% 0.2 64.4 1.4 5.6 1.978 1.0 2.3 4 Yes YesFluorene mg/kg 136 42 31% 0.2 34.4 0.7 3.0 1.978 0.5 1.2 2 Yes YesPhenanthrene mg/kg 136 115 85% 0.2 245.0 4.6 21.3 1.978 3.6 8.3 20 Yes YesFluoranthene mg/kg 136 131 96% 0.4 278.0 8.6 24.9 1.978 4.2 12.8 10 Yes YesPyrene mg/kg 136 129 95% 0.4 269.0 8.0 23.8 1.978 4.0 12.1 20 Yes YesBenzo(g,h,i)perylene mg/kg 136 113 83% 0.3 41.9 2.0 3.9 1.978 0.7 2.6 3 Yes Yes

C-PAHsBenzo(a)anthracene mg/kg 136 122 90% 0.3 116.0 3.8 10.4 1.978 1.8 5.5 9 Yes YesChrysene mg/kg 136 127 93% 0.3 125.0 4.4 11.2 1.978 1.9 6.3 7 Yes YesBenzo(b)flouranthene mg/kg 136 129 95% 0.4 134.0 5.2 11.9 1.978 2.0 7.2 8 Yes YesBenzo(k)flouranthene mg/kg 136 122 90% 0.3 49.4 2.5 4.9 1.978 0.8 3.4 4 Yes YesBenzo(a)pyrene mg/kg 136 122 90% 0.2 90.9 3.2 8.1 1.978 1.4 4.6 7 Yes YesIndeno(1,2,3-cd)pyrene mg/kg 136 115 85% 0.3 53.3 2.5 6.1 1.978 1.0 3.5 3 Yes YesDibenzo(a,h)anthracene mg/kg 136 79 58% 0.2 15.1 0.7 1.4 1.978 0.2 1.0 1 Yes Yes

VOCsBenzene mg/kg 26 1 4% 0.061 0.365 0.062 0.087 2.060 0.035 0.097 NA - NoToluene mg/kg 26 5 19% 0.1 0.55 0.082 0.099 2.060 0.040 0.122 NA - YesEthylbenzene mg/kg 26 1 4% 0.11 0.365 0.063 0.088 2.060 0.035 0.099 NA - NoTotal Xylenes mg/kg 26 6 23% 0.061 0.84 0.077 0.157 2.060 0.064 0.140 NA - YesNaphthalene mg/kg 26 8 31% 0.43 3.3 0.441 0.634 2.060 0.256 0.697 NA - YesTrichloroethene mg/kg 26 1 4% 0.14 0.365 0.065 0.089 2.060 0.036 0.100 NA - NoTetrachloroethene mg/kg 26 1 4% 0.62 0.62 0.082 0.140 2.060 0.057 0.138 NA - Non-Butyl benzene mg/kg 26 0 0% ND ND ND ND ND ND ND NA - Nosec-Butyl benzene mg/kg 26 0 0% ND ND ND ND ND ND ND NA - NoIsopropylbenzene mg/kg 26 0 0% ND ND ND ND ND ND ND NA - Nop-Isopropyltoluene mg/kg 26 0 0% ND ND ND ND ND ND ND NA - Non-Propylbenzene mg/kg 26 0 0% ND ND ND ND ND ND ND NA - No1,2,4-Trichlorobenzene mg/kg 26 1 4% 0.61 0.61 0.197 0.099 2.060 0.040 0.237 NA - NoTrimethylbenzene mg/kg 26 0 0% ND ND ND ND ND ND ND NA - No

PCBsTotal PCBs mg/kg 26 9 35% 0.3 24.2 1.9 5.0 2.1 2.0 3.9 NA - Yes

NOTES:Surface soil only includes soil at depths of 0-0.5 feet gelow grade, except for Area 1 (0-3 feet) and stockpiles (all depthsmg/kg = milligrams per kilogram, which is equivalent to parts per million (ppm)COC- Chemical of Concern for the SiteEPCs = Exposure Point Concentrations.EPH = Extractable Petroleum HydrocarbonsPAH = Polyclyclic Aromatic HydrocarbonsC-PAH = Carcinogenic PAHsNon C-PAH = Non-carcinogenic PAHsPCBs = Polychlorinated biphenylsVOCs = Volatile Organic CompoundsEVH = Volatile Petroleum HydrocarbonsUCL - Upper Confidence Limit

95%Confidence

Interval

Upper95% UCL of Mean

Retained As COC for

Fugitive Dust?

Site MaximumDetected

ConcentrationAbove

Background?No. of

DetectsFrequency

of Detection

MassDEP Urban Background

Concentration (Fill Soil Containing Ash)t-value

Soil EPCs For Fug Dust Eval - 0-0.5 Revised.xls