FAX COVER SHEET · de maximis, inc. 4155 El Camino Way, Suite A Palo Alto, CA 94306 (650) 856-2198 Fax (650) 856-2199 FAX COVER SHEET From: Robin Robinsocc: Brucne Kennington To:

C

de maximis, inc.4155 El Camino Way, Suite A

Palo Alto, CA 94306(650) 856-2198

Fax (650) 856-2199

F A X C O V E R S H E E T

cc: Bruce KenningtonFrom: Robin Robinson

To: Ralph Dollhopf Fax: 313-692-7677

Date: January 28, 1998

Subject: Tables and Graphs for meeting with Matt Ohl on January 29, 1998

No. Pages (including cover): Sent in three packages of 20, 31, and 16 pages

Attached are the items we've put together for the meeting. Please call me or Beth Svenkerud(630-443-1940) if you don't receive everything.

I'm looking forward to talking to you on Thursday.

Yeoman Creek SiteMeeting with USEPA

January 29,1998

Index of Documents

Item ReferenceNo

Pages

I. Potential for Combustion or Explosion in Basements

1. Explosimeter readings before AEVS installed2. Current LEL readings, Dec '97 and Jan '98

3 Plots: LEL in Breathing Zone, 1401 W. Golf Rd.4 Plots: LEL in Breathing Zone, 1407 W. Golf Rd.5 Plots: LEL in Breathing Z one, 1425 W. Golf Rd.6. Plots: LEL in Breathing Zone, 1431 W. Golf Rd.7. Plots: LEL in Breathing Zone, Sign Rm.8. Plots: LEL in Breathing Zone, Laundry Rm.9. Plots: LEL in Breathing Zone, 1451 W. Golf Rd.

10. Plots: LEL in11. Plots: LEL in12. Plots: LEL in13. Plots: LEL in14. Plots: LEL in15. Plots: LEL in16. Plots: LEL in17. LEL Gradient

Floor Crack,Floor Crack,Floor Drain,Sump Top,Floor Crack,Sump,Floor Crack,above crack

1401 W. Golf Rd.1407W. Golf Rd.1425 W. Golf Rd.1431 W. Golf Rd.Sign RoomLaundry Rm.1451 W. Golf Rd.in 1451

2nd Amend, to AOC, p 6Copied on same sheet

Monthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project Reports

Monthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsO & M, Inc. daily monitoring

I. Potential for Toxic Threat in Basements

18 Analytical Results for Gas Samples, October 1991 Table D.8, Rl Rept, App. D19 Current Gas Sample Results, January 20-21, 1998 Air Toxics Ltd.

20 Plots:21 Plots:22 Plots:23. Plots:2*. Plots:25. Plots:26. Plots:

27. Plots:28. Plots:29. Plots:30. Plots:31. Plots:32. Plots:33. Plots:

FID in Breathing Zones,FID in Breathing Zones,FID in Breathing Zones,FID in Breathing Zones,FID in Breathing Zones,FID in Breathing Zones,FID in Breathing Zones,

1401 W. Golf Rd.1407W. Golf Rd.1425W. Golf Rd.1431 W. Golf Rd.Sign Rm.Laundry Rm.1451 W. Golf Rd.

Monthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project ReportsMonthly Project Reports

FID in Floor Crack,FID in Floor Crack,FID in Floor Drain,FID in Sump Top,FID in Floor Crack,FID in Sump,FID in Floor Crack,

1401 W. Golf Rd.1407W. Golf Rd.1425W. Golf Rd.1431 W. Golf Rd.Sign RoomLaundry Rm.1451 W. Golf Rd.

Monthly ProjectMonthly ProjectMonthly ProjectMonthly ProjectMonthly ProjectMonthly ProjectMonthly Project

ReportsReportsReportsReportsReportsReportsReports

III. AEVS Effectiveness over time34. LEL reduction when AEVS installed:35. LEL control in basements36. FID control in basements

Refer to items 1 - 2 aboveRefer to items 3-16 aboveRefer to items 19-33 above

28

2111115

1111111

de maximis, inc. 1/27/98

V. Other documentsMatt Ohl letter to Robin Robinson dated 1/16/98 re AEVS operation;Response to Matt Ohl letter from Robin Robinson dated 1/20/98;Letter to Richard Boice from Golder Associates dated 11/2/94 re increasing AEVS action levels;Attachment to Golder 11/2/94 letter from Theodore J. Hogan re increasing AEVS action levels;Letter to Sheri Swibel from Jamey Bell dated 12/5/96 rejecting the proposed increase of AEVSaction levels.

I. Potential for Combustion or Explosion in Basements

to RI/FS Work Plan, Additional Landfill Gas Monitoring, dated

January 1993.

E. The following explosimeter readings were obtained at the

1401-1451 Golf Road building. This building includes commercial

facilities on the ground floor and apartments above:

Location1401 Golf,1401 Golf,is located1401 Golf,1401 Golf,

1401 Golf,

basement ambient airSE corner where sump

basement ambient airinside north tilebasement ambient air

1415 & 1419 Golf, sump insidetile1425 Golf,zone1425 Golf1431 Golf,1431 Golf,1431 Golf,zone1431 Golf,tiles1451 Golf,basement1451 Golf,1451 Golf,

1451 Golf,zone1451 Golf,1451 Golf,

basement breathing

inside south tileinside tileinside tilesbasement breathing

gas vent and inside

breathing zone

inside south tilefloor drain and tilesbasement breathing

cracks in floorholes

Date10/2/9210/2/92

10/8/92

10/8/92

1/21/93

9/30/92

1/21/93

1/21/93

9/30/92

10/7/92

1/20/93

1/20/93

9/30/92

9/30/92

10/7/92

1/21/93

1/21/93

1/21/93

% LEL

3-5

60-100*

4-5

>100

1-10

6

4

>100

47

16 & 13

2-3

90-100

5

47

87-100

8-10

10-100*

14-100**oxygen levels were not measured In connection with this sample

3 ?- 6

k7T>

West Golf Road Basement 1401LEL in Breathing Zone vs. Time

LU0.003/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

LU


0.003/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

LU


03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

LEL Reading in Percent Methane

UJ

West Golf Road Sign Rm. BasementLEL in Breathing Zone vs.

J 003/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

West Golf Road Laundry Rm. BasementLEL in Breathing Zone vs. Time

UJ

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

LU


J 0 -03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

West Golf Road Basement 1401LEL in Floor Crack vs. Time

10 -03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

0)4C03

TV

CCDOv_(!)Q. 2C

O)C

0)

LU

West Golf Road Basement 1407LEL in Floor Crack (Center) vs. Time

———— si- IfffB HBB« Y

•jjg BEtfitffl

1

T

TT"

i•Bffil

-9«m

———— ¥-

i

',

Ml•jP!>to

pilspliiipj;:;:>- |;|i|

F888™ •

J

::iii:::iHit:: 'ihii '-' if !YI : 'i1 &' '' U ' '" ' ' i' '' ii

i

\ m m m

::::::::::::::::::-:::::-::::::::::::'::::':':::::':;::-::::::::::::::::::::-:::::::::::::::::-::.:::::::dJj t^V- :•:•:•:-:•:•:•:•::•-•:•:•:•:•:•:•:•••••••••••>•••••-:•:••-•••••••••••••••••••••:••^M;;:;: ;:!;;;;;; :

''•'':ii:'; ii'": '""' :iiif "' 'w^ ' ;'ij:' •'•'•' ••-•-•••- '-••-•-••• •-• '••• •'•• '••'•

\

i

m03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

0, 100 —cCT3

80

c0)< 60

40

LJJ

West Golf Road Basement 1425LEL in Floor Drain vs. Time

P0 -03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

DSICD"

CDQ)Q.D'

CO

COO i--J ICD

OCDfoCOCD

LEL Reading in Percent MethaneCO cn

CDcn

ofo00CDcn

ocncnCD

oO)

CD

H1

"

oo

ohoCDoo

-

c3

m"~5'

O Q)

CDQ)(/>(D3(D

CO

West Golf Road Sign Rm. BasementLEL in Sump vs. Time

J..103/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

West Golf Road Laundry Rm. BasementLEL in Sump vs. Time

100 -(0

cCDOL.Q)

Q_

D)

80

60

40

& 20

LU T To —03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

LLJ

West Golf Road Basement 1451LEL in Floor Crack (Center) vs. Time

0 -03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

Air Monioring Gradteot Measurments1401 Through 1451 West Golf Road BuildingWaukeoan. Illinois

Date: 01/27/98

Location (Notel)

Air Montoring Gradwnt Measurments

Methane(%)

1401 Through 1451 West Golf Road BuildingWaukeoan, Illinois

Date: 01/27/98

Location (Note 1)

1 407 W. GolfTop of sumpTop of sump (3 inches)Floor DrainFloor Drain (3 inches)

1415 & 1419 W. GolfLaundrv Room:Sump (no pump installed)Sump (no pump installed) (3 inches)

1425 W. GolfTop of sumpTop of sump (3 inches)Top of sump (6 inches)Top of sump (9 inches)Top of sump (12 inches)Crack in floor near southeast comer

Methane(%)

0.0

0.0

0.0

0.0

0.0Crack in floor near southeast comer (3 inches)Crack in floor of workroom (north) 0.0Crack in floor of workroom (north) (3 inches)Floor drain (blocked) (Notes 2 & 3)Floor drain (blocked) (3 inches)

1431 W. GolfShower drainShower drain (3 inches)

1451 W. Golf RoadFloor DrainFloor Drain (3 inches)Crack in floor (center of basement)

17.20.0

0.0

0.0

0.0Crack in floor (center of basement) (3 inches)Crack in floor (west end)Crack in floor (west end) (3 inches)Crack in floor {west end) (6 inches)Crack in floor (west end) (3 feet)

Weather Conditions:Temperature (deg F):Wind Direction:Wind Speed (mph):Barometric Pressure (in Hg):

Notes:

0.0

PID(ppm)

PID(ppm)

0

0

0

0

0

0

2000

0

8500

0

RD(ppm)

FID(ppm)

8.05.0

10.05.0

2.50050

15020151310

17.010.013.010.0

st>1 0.000

5040

2.0005030050

175707070

LEL(%)

LEL(%)

0

0

270

0

0

0

>100

0

2700

0

1 - Distances provided in inches above the sample location noted in parentheses.

H2S(ppm)

H2S(ppm)

0

0

0

0

0

0

0

0

0

0

0

Oxygen(%)

Oxygen(%)

20.6

20.8

20.8

20.9

20.9

20.9

17.4

20.8

20.7

20.8

20.8

CO2(ppm)

CO2(ppm)

419

671

2.685

602

470

499

6,000

556

752

567

1,073

2 - A reading in the floor drain (blocked) of 1425 W. Golf was estimated as >1 0,000 with the instrument pegged high.3 - Although the LEL meter was pegged high reading >100 % LEL

1 7.2% methane and an LEL of 344%.Nl - Not indicatedNM - No measurement taken

the methane monitoring instrument registered

* - Hydrogen supply for the FID instrument was depleted and requ red recharging.

'

Page 1 of 1

II. Potential for Toxic Threat in Basements

933-8136

Table D.8Analvtical R«ulu for Cu Simple*

October. 1991Yeoman Creek Zd wards Field Lmdfilb

Sample IdentificationSample Location

Sample DaleUnto of Meant*

Method TO-14Freonl2FiWBlHCUoranteduMVinyl ChlorideHtmmniclnaHeCUoTMfhaneFreooll1,1-DichloroetheiMFreonmM«tbylene ChlorideU-DkUoroethaMcb-l^-DichloroetheneChloroformU.I-TricWoroeihaneCarbon Tctraoti arid*nanmiaU-DichJoroethancTricMoreetncml*2vUiciuOfoprapvicctt»l «3*DidiiOCOpropcntTohMNtrace- 1,3-DichloropropciMUU-TriAlonxthaneTemcUonMhcmEthybnc DibromMeCUfm in*~ -- —umraovmnvEthyl Benzenem-andp-Xylen*o-XylaneStyran*1 ,1 A2-Tett»cUoroeU»ane1,3,5-TrnmlhyfbaizerM14.4-Trimcdrylbtiacne1 «3*DldvO(QOtnB0tt1,4-DichlofotxBianeCUorototuemU-DicUorobnuneIi4-Trkhlorobera«neHeneUorobuudiene

Method ASTMD-W16OxytenNitrogenCarbon MonoxideKUdMMCarbeoDionaeNMOC-

OSHAPfrnnsaibleExpoeure

Limit

wb

100000010000003000010005000

1000000NENE

1000000300000

NENE

2000NE

20001000NE

9000075000

NE100000

NE10000NE

200007500010000010000010000073000

K1VMENE\nrNt

NE75000

NENENE\TErl£

NENENENEIHNE

GP20201Gas ProbeLFG-202

107/92ppbv

41004600NDNDND600NDNDNDNDND280130NDND1200SO87NDND290VDNDNDNDNDND200VD690200NDNDNDNDN'DNDNDVT\nO

H0.728.6ND7317

0.032

BSOIOIBuementSump

1451 W. Golf

10/7/92ppbv

1*13

NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND37NDNDNDNDND11377.593NDND\jr\NUNDNDNDND*JT\IV Uxinrvu

%1977ND2.61.7

0.008

BS0201BvMmcftt

Ambient Air1451 W. Golf

10/7/92ppbv

23016

NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND24NDNDNDNDNDND20ND67v*rtIN LI

NDNDNDNDNDNDKinNLJ\jr\r<!/

H19SOND0.250.270.002

BS0301BMoncnt Sump

1401 W. Golf

10/*V92ppbv

ISO76ND52NDNDNDNDNDNDND9.4NDNDND62NDNDNDND32NDNDNDNDND301101275Uf|nuNDNDNDNDNDNDwnJNL/ur%nu

tt1662ND166.5

0.004

(38401179. WQ1/djf) P>0«1of2

933-8136

TiMcD.SAnalytical Results for Gas Samples

October. 1991Yeoman CreekTdwards Field Landfills

Sample IdentificationSample Location

Sample DataUnits of Maasun

Tentatively Identified CompoundsFeniane1 ,2J-Trimethylcyclopenune2,24,4-TetraroeuiylpenUne3-E%J-2>Dim«hylpenUi»eUnknown CyclopenUne2,2,3-TrimethylbuuneMcthylcyclohcxanc2,4-Dimeihylhexanc2-Methyihexane3-M«hylhe>caneUJ-TAoetnyteydohexane2J,4.TrnMbyliettn*2.3.5-TrinetnvBiexane»p«»p»r- • * •••• « f~ • i • VPV

Lnlowwn Cydohcxuic) -MetbyM-d -Methytpentyl) Cydopropa3>4XmdbyloeUMl.rOxybisocuneHeptane24-DioMlfcylMptanc4,7.Dinmhylundecan«2,4>Trimdbyldeeane2J.6-Trimeth>-ldee«neTTrintna ilaisi •rPopywiiB2-Hcxnom

OSHAPermisiiblcExposure

Limit

eob

600000NENENENENENENENENENENENEhfENENENE

400000NENENENENE

3000

CP20201Ou ProwLFO-202

10 /92ppbv

1 1000NONDNO

8900980097009000NDNDNDNDND

18000NDND7500ND

14000NDNOND

$00007800

BS010IBasement Sump

1451 W Gotf

10/7/92ppbv

NDND71NDNDND8689ND68NDND97NDNDNDNDND11026079ND170630

BS0201Basement

Ambient Air1451 W Golf

10/7/92ppbv

NDNDND57NDNDNDNDNDNDND51NDNDXDNDNDNDND22074NDND390

BS0301Basement Sump

1401 W. Gotf

10/8/92ppbv

ND500NDNDNDNDNDND1300ND570NDND

160013001100ND940NDNDND860980710

NOTES:NV4OC - Nomediane Organic Caifcon• - Referenced to PropaneND. Not Detected

(36401179. WQ1/dif) P«oe 2 of 2

JAN-21-98 WED 14:10 AIR TOXICS LTD FAX NO, 9169851020 P. 03

AIR TOXICS LTD.SAMPLE NAME :12<M4JS •*

*H>A METHOD TO-14 6C/MS

gundVinyl Chforid*ChloroethaneFreon 11ei»-1,2-Dichloroeth8n«ChloroformB«rv»hi • • • - - • • •TolueneTetrachtoroetheneEthyl Benzene

o-Xylene' 'Styrane1,1,2,2-Tetrachtoroettiarte

Container Type: Tedlat Bag

8u|_______OcfaifluorotoluenaTolu«n«-d84-Bromofluorobenzene

JJmltjpp1.01.01.01.01.0

1 01.01.01.01.01.01.0

J^Recoy*999996

lup&

Not DetectedNot DetectedNot DetectedNot DetectedNot DetectedNot Detected

6.0Not DetectedNot Detected

2.8"ii ' '" '

Not DetectedNot Detected

Method Limit*70-13070-13070-130

Page 2

JAN-21-98 MED 14:11 AIR TOXICS LTD FAX NO. 9189851020 P. 04

AIR TOXICS LTD.SAMPLE NAMI: 120-1425

i WOH47-02A

CompoundWnyf ChlorideChloroetrianeFreon 11cls-1,2-DichloroetheneChloroformBenzene • • • • • • • • •TolueneTetrachloroetheneEthyl Benzenem,p-Xyleneo-Xyle'nestyrane1.1,2,2-Tetrachloroethane

Container Type: Tedlar Bag

SurrogatedOctafluorotolueneToluene-d84-Bromofluorobenzene

• Limit1.01.01,01,01.01.01.01.01.01.0i.o"1,0ro

AmountNot DeteotadNot DetectedNot Detected

• Not DetectedI . Not Deteoted

NotOetec«ed2.8


- - - .1-1. .Not DetectedNot Detected.Not Detected

Method Umrtt70.1307(X13070-130

Page 3

JAN-21-98 WED 14:11 AIR TOXICS LTDFAX NO. 9169851020 P. 05

AIR TOXICS LTD.SAMPLE NAMR.no-ujj <<£-"

mi 9WJI47-OJAEPA MJETHOJ) T014 CC/MS Full Sc»n

CompoundVinyl ChlorideChloroettaneFreonllcls-1 , 2-Dlch loroeiheneChloroformBenzeneTolueneTetrachloroethaneEthyl Benzenem,p-Xylaneo-Xytar»Styrene1 , 1,2,2-Tetrachloroeihane

Rpt. Umlt (ppbv)1.01.01.01.01,01.01.01.01.01.01.01.010

! Amount (ppbv): Not Detected

_ - , NotOrtMted: Not Oetectad

Hoi 0«teot«l: Not Oatectoo: Not Datectedi 4.6• NotDetectad' Not Dateetad; 2.0

Not OvtootedNot DetectedNot Detected

Container Typ»: Tedlar Bag

Surroflafea_____ Reoovery Method LlmMOctafluofotoiueneToluene-dB4-Bromofluorobanzftne

10397100

70-13070-13070-130

Page 4

JAN-21-98 WED 14:12 AIR TOXICS LTD FAX NO. 9169851020 P. 06

AIR TOXICS LTD.SAMPLE NAME: 120-1451

ID* WOU47-04AEPA METHOD TO-H CC7MS FWI Scan

Compound; Chloride

ChloroethaneFreon 11ci*-1,2-DlchloroetheneChloroform

Rpt.Umrt(ppbv)1.01.01.01.01.0

BenzenetolueneTetreohJoroetheneEthyl Benzenem,0-Xv<en«

1.01.01.01.01.0

o-Xyl«n»Styrena1.1,2,2-Tetrachloroethanc

Containtr Typ«: Tvdlar Bag

Surrogate*________

1.01.01.0

% RecoveryOctofluorotolueneTolusne-<J84-Bromo(luorobanz«ne

1029898

Amount(ppbNot DetectedNot CMectedNot DetectedNot DetectedNot DetectedNot Detected

3.9Not DetectedNot Detected

1.9Not DetectedNot DetectedNot Detected

Method Umfte70-13070-13070-130

Page 5

JAN-22-98 THU 17:29 AIR TOXICS LTD FAX NO. 9189851020 P. 03

AIR TOXICS LTD.SAMPLE NAME: 121-1451

ID*1: 9R01159-01ABPA METHOD TO-14 GC/MS FuH Sam

CompoundVinyl ChlorideChloroethaneFreon11cls-1 ,2-Dfchloroeth«n«ChloroformBenzeneTolueneTetraohloroetheneEthyt Benzenem,p-Xy1«neo-XytencStyrena1 ,1 ,2,2-Tttrachloroethane

Bpt. Limit (ppbv)1.01.01.01.01.01.01.01.01.01,01.01.01.0

Amount (ppbv)Not DetectedNot Detected

— — Not D*t«ct«dNot DetectedNot DetectedNot Detected

e.eNot Detected

1.95.427


Contfllmr Type: Tedlar Bag

Surroflatee % Recovery Method LimitsOcteJluorotolueneToluene-dB4-BromotjUorobenzene

r

109109106

70-13070-13070-130

Page 2

JAN-23-98 FRI 14:54 AIR TOXICS LTD NU,

AIR TOXICS LTD.SAMPLE NAME; 122-1415

ID*: 9901175-01A1PA METHOD TO-14 GC/MS Full Scan

CompoundVinyl ChlorideChloroethaneFreon 1 1ci$-i,2-Dichloro«th«ne ...ChloroformBenztneTolueneTetrachloroetheneEthyl Benzenem,p-Xyleneo-XyleneStyren*1,1,2,2-Tetrtchloroethane

Rpt. Limit (ppbv)1.01.01.01.01.01.01.01 01.01.01.01.01.0

! Amount (ppbv)j Not Detected' Not Detectedi Not Detected; Not Detected

~~ j Not Detected| NotO«t»ct«d

i 5'4| Not DetectedI Not Detected; 2.5

• • • • • ' N o t DetectedNot DetectedNot Detected


OotafluorotolusneToluen»-d84-Bromofluorobenzene

Recovery10499108

; Method Umite70-13070-13070-130

Page 2

JAN HlH T'JXll-o Lu1

CompoundViry i Chlo^da

F-recn 1 '<

ci?-1 ?-D ;r>''.hioro'crnnr}pp7ofii>

Tn|»O"BT?t'acMoro

Ethyl B^ze

AIR TOXICS LTD.SAMPLE NAME : 112 1131

FPA METHOD TO-1 4 GC/MS Full Sran

Rpt Limit (ppbv1 01 0

1 o1.01 01 01 0

Amount (ppbv)*lo' Delec'.edNot Detectedf ^ O t DetertodNo'. De'ectedNot Detectedriot Detected

4 8Not De'ertftHNot De'ected

-> -i*L i.

Nat DetectedNot Detecteo

Container Typs Tedlar Bag

SurrogatesOc'afluuioto!

Recovery10299

Method Limits70-130

A HU,

AIR TOXICS LTD.SAMPLE NA1VTF ' 12

ID#: 9801175-OMF,PA MFTHOT) TO-U GC/MS Full St *n

imSWit& i i &i-aB-MKl

Compound Rpt. Limit (ppbv)Vinyl C'tlo'lde

F-thyl B%-V»r-,i>

1 1 7 /-Tetr3ch loi'oeth3i»

1 01 0

1 0< 0" ' 0' 01 C1 01 31 Q

' 0

1 0

Amount (ppbv)Not DstectedNol HetectfdNot O'.sOdNot Ceterledhot uatac.tftd

' 1

Net DetectedNo' Detectcc


Surrogates__________________

T-jluenu 'J8

% Racovary10099102

Method Limits

West Golf Road Basement 1401Breathing Zone (Southeast) vs. Time

400 —

350

0 —03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading

Yeoman Creek Air Monitoring 01/25/98

West Golf Road Basement 1401Breathing Zone (Southwest) vs. Time

300 —

0 —03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1407Breathing Zone Monitoring vs. Time

400 —

0 —03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading



o —03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading



1000

9 200

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement Sign RoomBreathing Zone Monitoring vs. Time

500

co 2000)o:Q 100

o10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement Laundry RoomBreathing Zone Monitoring vs. Time

500

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading



1000

800Q.£L

-- 600o>•o(0o> 400

200

003/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1451Breathing Zone (Southeast) vs. Time

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1451Breathing Zone (Southwest) vs. Time

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1451Breathing Zone (Northwest) vs. Time

1000

^ 800Q_Q.

•- 6000)

g 400a:200

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1451Breathing Zone (Northeast) vs. Time

1000

800Q.Q.•- 600O)

"O(00> 400

200

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


1000 -

•C or\nn 800 -Q_

t 600 -c•D<0 400 HQ)KC 200-

0 -03/0'

West Golf Road Basement 1401Floor Crack (Northeast) vs. Time

^ ^

7/94

T

tk•

r1JHilIB-i ^09/23/94

•

• Tff^^,

04/11/95• —10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1407Floor Crack Monitoring vs. Time

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


West Golf Road Basement 1425Floor Drain Monitoring vs.

9 200

03/07/94 09/23/94 04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Date of Reading


IV. Other Documents

UNITED STATES ENVIRONMENTAL PROTECTION AGENCYREGION 5

77 WEST JACKSON BOULEVARDCHICAGO. IL 60604-3590

Januaiy 16,1998 REPLY Tp THE ATTENT10N °"SR-6J

Via Facsimile and Certified MailReturn Receipt Requested

Mr. Robin Robinsonde maximis, inc.4155 El Camino Way, Suite APalo Alto, CA 94306Fax: (650)856-2199

Re: Yeoman Creek Landfill Site, Waukegan, Lake County, Illinois

Dear Mr. Robinson:

The United States Environmental Protection Agency (U.S. EPA) and the Illinois EnvironmentalProtection Agency (IEPA) have reviewed several persistent problems that have not beenaddressed at the Yeoman Creek Landfill site in Waukegan, Lake County, Illinois. The fencingand warning signs around the landfill have not been maintained in accordance with theAdministrative Order by Consent, Docket No. V-W-'91-C-092 "the Order". Within fifteen (15)days of receipt of this letter, Respondents shall repair and restore the fence and warning signsaround the site. Fencing that has been cut must be replaced rather than simply splicing the cutends with wire.

Section VI.A of the Second Amendment to the Order requires performance monitoring of theventilation system in the basements adjacent to the landfill. The basement at 1401 West GolfRoad was not monitored during the December 16,1997, and January 14, 1998, monitoringevents. Within three (3) days of receipt of this letter, Respondents shall conduct the requiredperformance monitoring at 1401 West Golf Road and report the results of the monitoring to U.S.EPA.

The Order further requires that if breathing zone readings are found to exceed 100 ppm duringthe monthly monitoring, Respondents will re-evaluate system design and performance andconsult with U.S. EPA and IEPA. Breathing zone readings have exceeded 100 ppm in certainbasements. In the basement at 1451 West Golf Road, a reading greater than 100 ppm wasrecorded on November 14,1997. In the basements of 1431 and 1451 West Golf Road readingsgreater than 100 ppm were recorded and negative pressure was recorded at 1415, 1419, and 1431on December 16, 1997. On January 14,1998, breathing zone readings above 100 ppm wererecorded at 1415,1425, and 1451 West Golf Road and all basements except 1451 West GolfRoad had negative pressure.

HecycleoVRecycUble-Prlnted with Vegetable OH Based Inks on 100% Recycled Piper (40% Po*tcon*umer)

Respondents have not re-evaluated the system design and performance as required bjRebalancing the system as was done during December 1997 has been ineffective. U.S. EPA'sevaluation of the system has concluded that the current system has become ineffective atmaintaining positive pressure and removing landfill gas from the basements. As pro' rided bySection XI of the Order, Respondents shall begin conducting the additional work enc osed withthis letter no later than three (3) days from receipt of this letter. Within thirty (30) djys of receipt

the Order.

of this letter, Respondent shall submit to U.S. EPA a design for an active gas extractbetween the waste boundary and adjacent buildings to remove landfill gas before it r caches thebasements.

If you have any questions regarding this matter, please feel free to call me at (312) 8 56-4442.

Sincerely,

on system

Matthew J. OhlRemedial Project Manager

Enclosure

cc: Ralph Dollhopf, U.S. EPA, Emergency Response BranchStu Hersh, U.S. EPA, Office of Regional CounselGreg Ratliff, IEPAOm Patel, Roy F. Weston, Inc.Larry Keller, PRP Technical Committee Co-ChairLieutenant Hughes, Waukegan Fire DepartmentLake County Health Department

Enclosure

1. Monitoring shall be conducted once per day, seven days per week.

2. A photo-ionization detector and a flame ionization detector capable of reading up to10,000 units shall be used.

3. A multi-parameter analyzer shall be used to collect data including temperature,barometric pressure, lower explosive limit percentage, methane percentage, O2percentage, CO2 percentage, and H2S each day.

4. Dedicated methane alarms shall be installed and maintained in each basement.

5. Air quality samples shall be collected and analyzed for, benzene, chloroethane,chloroform, cis-l^-dichloroethylene, ethyl benzene, styrene, toluene, 1,1,2,2,-tetrachloroethane, tetrachloroethylene, trichloroethylene, trichlorofluoromethane, xylenes,and vinyl chloride each day.

6. Results shall be sent to U.S. EPA and IEPA no later than 4 pm each day via electronicmail to "[email protected]" and "[email protected]" and via facsimileto (312) 886-4071 and (217) 782-3258.

9 — - * -- - * *de mcLximis. inc.4155 El Camtno Way

Suite APalo Alto. CA 94306

(415)856-2198Fax(415)856-2199

New Area Code (650)January 20,1998

Mr. Matt Ohl, SR-6JRemedial Project ManagerUS Environmental Protection Agency77 W. JacksonChicago, IL 60604

Re Additional response actions at the Yeoman Creek Landfill Site

Dear Mr Ohl.

This is in response to your letter of January 16, 1998, requiring additional sampling and other responseactions at the Yeoman Creek Landfill Site ("site"). We received your letter late in the afternoon onFriday, January 16. The Technical and Steering Committees met over the weekend and on Mondaymorning, January 19, in order to be as responsive as possible to the items listed in your letter.

The respondents seriously question the need for the intensive and expensive actions required by yourletter, given that: the breathing zone gas readings in the 1401 -1451 West Golf Road building do notrepresent an explosion hazard; the overly conservative 100 ppm breathing zone threshold has beenexceeded infrequently (and normally only in the 1451 basement), and it is not at all clear that the gas in thebasements (particularly in the 1451 basement) originates in the landfill, or is a transport mechanism forcontaminants of concern. The respondents are also disappointed at the short response time allowed byyour letter, and that you did not communicate your concerns to the group informally before sending yourlate Friday facsimile. Nevertheless, the respondents are taking the actions described below in response toyour letter.

1. Fencing repairs. A fencing contractor has been contacted and will be onsite next week, to repair thefence.

2. Warning Signs. The replacement signs were ordered during the week of January 12 and should bedelivered within the next two weeks We have ordered 20 signs so that we will have a supply on hand forfuture replacements as needed.

3. Monitoring in 1401 West Golf Road basement. As you know our contractor O & M, Inc. had beenunable to access that basement because the tenant had moved out and we had been unsuccessful in gettinga new key from the owner. Thank you for your help in obtaining access through the owner The basementat this location was monitored on Monday, January 19. The results show that FID readings in thebreathing zone are unchanged from previous readings with all readings less than 100 ppm. Themeasurements obtained in this basement and in the other basements in the 1401-1451 complex are beingsent to you and EPA by e-mail and facsimile as you requested.

Allentown. PA • Clinton. NJ • Collinsville. CT • Greencastle. IN • Knoxville, TN • Livonia. MlRiverside. CA • St. Charles. IL • Sarasota. FL • Seattle. WA • Waltham. MA • Wayne. PA

4. Re-monitoring in all basements in the 1401-145 1 West Golf Road complex. All basements were re-tested with FID and LEL meters en January 1 9. In addition O & M, Inc. utilized a POD meter. Except forthe 1451 basement, all breathing zone readings with the FID showed less than 100 ppm. These results arebeing sent to you and DBPA by e-mail and facsimile as you requested In addition, we instructed Air Conto rebalance the system and clean die filters in an attempt to restore the positive pressure in the basements.That was done today.

5. Air quality samples. These samples are being taken on January 20, because the contractor could notobtain the specified Tedlar sample bags on Monday. Samples are being collected from all the 1 40 1 - 1 45 1basements mat have shown breathing zone levels greater than 100 ppm in the last two months, which arelisted in your January 16 letter. The samples are being sent to the Air Toxics, Ltd. laboratory - the labmat has been used previously - for expedited analysis by Method TO 14. These results will be sent to youas soon as they are received

6. Future sampling actions. Monitoring for the parameters listed in items 2 and 3 in your enclosure willbe continued on a daily basis until USEPA agrees that the sampling frequency can be reduced Consistentwith item 5 in your letter, air quality samples will be collected on a daily basis in all basements where theFED readings in the breathing zone exceed the 1 00 ppm action level

7. Re-evaluation of me system design and performance. We are in the process of reviewing the YeomanCreek progress reports from 1994 to present to determine if the system performance has changed recently.We would like to meet with you as soon as we receive the first of the analytical results in item 5, above, togo over our findings with you in detail. We hope to have those results by late mis week or early nextweek.

8. Dedicated methane alarms. The monthly monitoring data have consistently shown that the LELreadings in the breaming zones in the basements are very low, normally less man 1 % of LEL. The LELmeter is calibrated using methane. Consequently, at our meeting we would like to present these data toyou and discuss the need for methane alarms in the basements.

As we discussed on the phone today, we are looking forward to meeting with you on Friday, January 23or the following Tuesday, January 27, to discuss the sampling results and future monitoring and samplingrequirements. If you would like clarification to any of these points, please do not hesitate to call me.

Very truly yours, . 1

Robin J. RobinsonProject Manager

cc: Steering Committee, Technical CommitteeGreg Ratliff, IEPALt. Hughes, Waukegan Fire DepartmentLake County Health Department

Jf$ 20 '98 12:41PM THE JEFF DIVER GROUP

•older Asee«krtM Inc.18W North Mill SfrMt, Suits CNopervlHa, I USA 60563T«l«f*one (708) 367-2066MX (706) 557-3330

November 16,1994 9334136.02

Mr. RkhardBoiceLP.E.U.S. Environmental Protectkm AgencyMad Code HSRL-6J77 West lacknn BoulevardChicago, Dlbois 60604-3590

Mr. Grag RatliffUliooii Environmental Protection Agency2200 Churchill RoadP.O. Box 19276Springfield, ffinoii 62794-9276

RE: RESPONSE TO USEPA NOVEMBER 2,1994 LETTER

Dear Messrs. Boke and Ratiiff

In a latter dated November 2,1994, the USEPA requested infonnation regarding severalissues. The issues included: 1) the ambient air readings recorded in the basement of1451 West Golf Road; 2) the automatic dialer kxated in the fan/thermal conditionerbuilding; and, 3) the ambient air reading recorded in the basement of 1615 Golf Road(Terrace Nursing Home).

Ambient Air Readings at 14S1 West Golf Road

Since installation of the Air-Exchange and Ventilation System (AEVS) at the 1401through 1451 West Golf Road building in June 1994, we have monitored the ambient airin the basement of Unit 1451 on a weekly bask. The monitoring program resulted inmeasurements ranging from 73 to 580 ppm, as measured by an organic vapor analyzercalibrated to methane. We made several attempts to meet the 100 ppm action level inthe Unit 1451 basement To this end, we have implemented the following actions:

• The AEVS was rebalanced to provide additional air to the basement• Openings in the basement were sealed to control the loss of a ir.• The air extraction rate was increased in the sump area.• The water level in the sump was adjusted to restrict gai from entering the

basement through the floor drain system.• Cracks in the basement floor and walls ware sealed.

OFflCES IN AUSTRALIA, CANADA, GERMANY. HUNGARY, ITALY, SWEDEN, UNITED KINGDOM. UNITED STATES

Jfl{S 20 '98 12:41PM THE JEFF DIVER GROUPUSEPA/1EPA S~\Messrs. Boice and RatW • 2 -

P.3/15November 16,1994

933-6136.02

Although the 100 ppm action kvel has been achieved in the other basements, we havebeen unable to consistently meet the 100 ppm level in Unit 1451. In Unit 1451, w» hawachieved a 94% reduction in combustible gas level* assuming an initial concentration of5,000 ppm and the current average concentration of approximately 300 ppm.

It does not appear that any other corrective actions are feasible. We suggested possiblealternatives meant to the property owner which could result in decreased organicconcentrations in the basement air in Unit 1451: weather stripping the basement doorto minimize air flow up the basement stain; and/or enclosing the basement stairs with asecond door at the foot of the stairs (in effect, creating an air lock). The property owner,however, refuses to allow us to take these actions, In any event, we can not guaranteethat either, or both, of these alternatives will result in measurements which meet thespecified action level

Given this situation, we request that the action level be modified to 1000 ppm, As setforth in the attached letter from Dr. Theodore ], Hogan, a 1000 ppm action level wouldprovide ample protection of human health.

In evaluating today's request, it needs to be emphasized that the AEVS is only atemporary control measure. The site remedy will address landfill gat at the source.

Automatic Dialer

The automatic dialer for the AEVS is located in the fan/thermal conditioner buildingadjacent to the 1401 through 1451 West Golf Road building. If an alarm in thefan/thermal conditioner building is activated, the system automatically shuts down.Upon system shut down, the automatic dialer immediately triggers and sends aprerecorded telephone message to Colder Construction Services' (CCS) Napervflleoffice. In the event that the office is closed and no one is available to receive themessage, a telephone answering machine has been installed to receive the message.Upon receipt of the message by GCS personnel, a site visit is made (by the next businessday) to determine the cause of the alarm.

When the AEVS was first installed, we noted mat the prerecorded message was lost ifthe system lost power. In order to alleviate this problem, a battery backup was added tothe system. After installation of the battery backup, the system was tested to verify thatthe alarm system would work despite a power failure. The system was observed to beoperating properly. Most recently, when Western, the oversight contractor, was on-siteduring a weekly inspection, the staff member observed that the automatic dialer had notsent a message to our office during an alarm event. This observation was correct, butthe malfunction was determined to be human error, rather than equipment failure. Theday before Weston's site visit, Air Con Refrigeration and Heating, Inc. (Air Con) hadbeen on-site to make system repairs. During the repair work, Air Con had disabled thedialer so that the system would not be activated during testing. However, when theycompleted the repair work, they failed to reset the automatic dialer. This was confirmedby our field staff the day after Air Con performed the work, when Western and Colder

Colder Associates

20 '98 12!42PM_THE JEFF DIVER GROUP _. .. P.4x15USEPA/IEPA ^ /-^ November 16,1994Mwr*. Boice and Ratlu,__________;_3-_________________933-8136.02

were on-*ltt. The automatic dialer was reset that same day and tested to confirm it*operation. In addition, after installation of the answering machine at our office, theanswering machine WM tested to confirm it* operation. Therefore, based on thesystem's current operational record, the automatic dialer appears to operate properly.

Basement Reading* Recorded at 1615 Golf Road

A* noted in your November 2,1994 letter, two of the reading* in the ba»ement of 1615Golf Road wera marginally in excess of the 100 ppm action level for ambient air.However, based on a review of the previous seven months of monitoring data collectedat 1615 Golf Road, it appear* that the October 1994 results were abnormal, and do notrepresent typical conditions in the basement. It is possible that the air monitoringequipment wa* malfunctioning given the high background reading* recorded diat dav(e.g., 30 ppm). In accordance with USEPA'* recommendation, we will perform weeklymonitoring in the basement of 1615 Golf Road. The weekly monitoring program beganthis week (w«ck of November 14,1994).

We look forward to your response regarding our recommendation*. Please do nothesitate to contact us if you have any question*, or require further information.

Sincerely,

COLDER ASSOCIATES INC

AliHashimlP.E.Project Engineer

/' Jon DlkinisAssociate

cc: Yeoman Creek/Edwards Field PRP Committee

AAH/JAD:imp

(3602779S,doc/srh)

Oolder Associates

"JB 12M3PM THE" JEFF DIVER GROUP P.5x15

THEODOR1 J. HOQAN A ASSOCIATES, INC.•330 SoulK Mo«faon • Suite 20 • HUudok Olinofc AO521 fHONe 70t.325.3039 J>AX 70*3253962

November 15,1994

The Yeoman Creek PRP Steering Committeec/o The Jeff Diver Groupi5S. Park fflvd, Suite 270Glen EUyrw IL 60137-4023

Subject: Organic Compound Action Level In Basements at1401-1451 W. Golf Rd., Waukegan, IL

Dear Committee Members:

Per your request; I studied the validity of a proposed action level of 1000 ppmas measured by an Organic Vapor Analyzer. My analysis found (hat the 1000ppm action level is protective of human health for occupational exposure inthe breaming zone level of the basement of the 1451 W. Golf building.

A1000 ppm action level would result in a potential benzene exposure ofabout 1.6 ppb, which is 0.16% of the benzene O8HA Permissible ExposureLimit (PEL) of 1000 ppb. Similarly, the trkhloroethylene concentration wouldbe 0.12 ppb, which is 0.0001% of its OSHA PEL of I00,000ppb. The chloroformconcentration would be 0.18 ppb, 0.0004% of its OSHA PEL of 50,000 ppb.

Vinyl chloride was absent in the landfill gas (LFG) probe sample. Thereforethe landfill is very unlikely to be the source for the vinyl chloride present inone of the basement sump samples. Still, assuming the LFG is the onlysource, a 1000 ppm action level would yield a vinyl chloride breaming levelexposure of 0.33 ppb, or 0.03% of the vinyl chloride OSHA PEL of 1000 ppb,

The concentration of 1,1,2,2-tetrachloroemane found in the 1451 W. Golfbasement air was measured prior to the installation of the ventilation system.Its presence at a concentration dose to mat found in the sump sampleindicates that there may be other sources for this material. Even so, assumingthe LFG is the only source, operation of the system to maintain a level at orbelow 1000 ppm OVA reading would result in a breathing zone exposure of 27ppb, or 0,5% of its OSHA PEL of 5,000 ppb.

PMftCtttft-01

JfiN's^'g^T 12*43PW-'THE~JEFF' DIVER*GROUP _. - - P.6x15

The basis tor this assessment and die calculations are as follows.

Assumption*1 Since OVA is calibrated with methane, 1000 units « 1000 ppm methane.2. Materials of primary concern are as identified in Rich Boice memo of

8/4/93.3. The LFG-2Q2 gas probe measurements used are representative of typical

concentrations.4. Using ratios of measured methane levels is a valid basis for calculating

exposure reduction of other materials.

Facts1. Current OSHA PELs are applicable to workplace exposure.2. Data source: 10/7/92 and 10/8/92 LFG-202 gas probe and basement

measurements for 1401-1451 W. Golf Rd., Waukegan, IL,3. Material concentrations used for calculations were selected based on

readings which would result in highest calculated breathing zone levels(underlined values).

4. Example of the calculation of expected exposure

1 200 ppb benzene In LFQ probe X730,000 ppm methane In LFQ probe In basement air

Calculated Basement Organie Compound Concentration* Using a 1000 ppmMethane Breathing Zone Action Levtl: 1401-1461 W. Golf Rd. Waukegaa, IL

Basement BasementQ««proba Ambient Ak Sump Breathing Zone

OSHAPEL,

Methane 730.000 ppmBenzene 1200 nob

Tnfihlonv CJDfibethylene(MonJoia-ethene)Chloroiorm laO-Bflfa

VinytcMorloe NO

1,1,2,2-tatra- 690rMo flhanp

2500 ppmNO

ND

NO

ND

87 ppb

160,000 ppm.62 ppb

NO

ND

pppb

TSppb

1200 ppb X1000/730,000 =

•7ppbX1000/730,000 m

190 ppb X1000/730,000 m

82 ppb X1000/160,000 •

67ppbXnnryuxfla.

1.6

0.12

0.16

0.33

«7

1000

100.0JOO

50,000

1000

SQ°°

rteject 196-01

JPN 20 '98 12!44PM-THE JEFF DIVER GROUP - -- P. 7/15

These potential basement breathing zone level exposures are all minutefractions of their OSHA PEL levels and their corresponding Threshold LimitValues (TLVs). Even considering the possible additive effects of the combinedexposure would result in an insignificant occupational exposure. Therefore fti* my professional opinion, as an industrial hygienist who has conductedextensive research on occupational exposure guidelines/ that the 1000 ppmaction level is protective of human health for both short term and long termoccupational exposure.

Sincerely,

THEODORE J. HOGAN & ASSOCIATES, INC.

Theodore J. Hogan, PhD,President

JflN 20 '90 12= 47PM THE JEFF DIVER GROUP P. 13/15

UNITED XTES ENVIRONMENTAL PROTECTION =NCYREGION 5

77 WEST JACKSON BOULEVARDCHICAGO. IL 60C04-3590

REPLY TO THE *TTtNTION OF:December S, 1996..

Ms. Sheri Swi.be! , Co -ChairYeoman Creek Technical CommitteeThe Jeff Diver Group45 South Park Blvd., Suite 270Glen Ellyn, IL 60137-6281

RE: Request to Modify the Organic Compound Action Level for theBasement Gas Monitoring Program at the Yeoman Creek Landfill SiteDear Ma. SwiJbel:

U.S. EPA has completed a review of the July 17, 1996, re-submit tal of the Yeoman Creek Steering Committals documentationsupporting the proposed modification of the action level Tor theOrganic Compound Gas Monitoring Program at locations in closeproximity to the Yeoman Creek Landfill.

U.S. EPA has determined that the criteria selecte-J by SteeringCommittee to evaluate the forenamed. proposed modification is notapplicable to Superfund Sites. The analysis provided by TheodoreJ. Hogan & Associates, Inc. evaluated organic compound exposuresusing the OSHA Permissible Exposure Limits (PELs) . Due to thefact that the monitoring program at the Yeoman Creek Landfill wasimplemented to measure off -site migration of landfill gases froma Super fund. Site/ Super fund risk assessment methodology must beapplied.

Attached, please find "Table 1" which re-calculaces the values inDr. Hogan 's memorandum using Super fund risk assessment factors.The overall total risks were 3 x 10'3 which exceeds the U.S. EPAacceptable risk management range of 1 x 10'6 to ;i x 10'4.established by the National Contingency Plan (NCP) . Therefore,when compared to the levels established by the NCP, a standardindustrial inhalation exposure to the contaminants of concern atthe calculated air levels associated with 1,000 ppm methane wouldbe unacceptable.

Should you have any further guestione or comments, please do note -hesitate to contact me at (312; 886-6436.

Sinfferely,

Reqpdial Project Manager

R*cye>«4/R«cyel*«0 • PrtnUr) wlffl VtgiUble 01 Battd Inks on 100% RicyeUd Paptr (40% PoUooniunMi)

JftN 20 '98 12:48PM THE JEFF DIVER GROUP P. 14/15

cc: firuce Sypnlevtaki, U.S. EPAGrmy BatliJff, XEPAYeoman Creek site File

\n\in

Table 1 ,Evaluation of Inhalation Risk Associated with Calculated Basement Concentrations

Yeoman Creek -1401-1451 W. Golf Road, Waukegan. IL

Basfe of calculations:1. Convert ppb concentrations lo ug/m3 using chemical-specific conversion (actore developed by NJOSH.2 Detemime chemical-specific Unit Risk Factors established by ERA.3 Calculate risk level associated with calculated air concentration from Unit Risk Factors.A Calculate risk level (or a 40j-hour work week.

Chemical

BenzeneMchloroetheneChlorofgrinVnyl chloride1.1.2.2-Tetrachtoroelhane ^...^ „ ...

CalculatedBasement Breathing Zone

Air Lever(pom)

1 60E-031.20E-041 BOE-043 DOE -042.70E-02

ConversionFactor*

1 ppm = X mg/mj

3.255.464.962607.00

CalculatedBasement Breathing Zone

Air Level .(ugrm3)

5.200.65506930.858

189

Unit Risk Factor*

{ugrtnY6.30E-061.70E-062.30E-05840E-05580E-OS

Risk Associated with Calcuiated Air Level168-hour/weeK

Exposure

4 3E-051 IE-062 IE-0572E-05V1E-02

Total Risk IE-02

40-how woik weekExposwe

1 OE-0527E-074 9E-061 7E-0526E-03

3E-03

_b

* Hogan, Theodore J. 1994. 'Organic Compound Action Level in Basements at 1401-1451 W. Golf Rd., Waukegan. IL."Letter to the Yeoman deck PRP Steering Committee from Theodore J. Hogan and Associates. Inc. 15 November 1994.

*NIOSH, 1996.c Benzene, chloroform, 1.1,2.2-tetrachtoioethane: IRIS. 1996.Tnchforoelhene and vinyl chloride: Interim toxicity criteria provided by Supertund Health Risk Technical Support Center Environmental Criteria AssessmentOffice (ECAO). Cinctimati, OM (1994) (as ded in Soil Screening Guidance: Technical Background Document. EPAI540/R-9S/128}

T

fa

<D

R \RISK\YCLP AIR XLS 11/20/96