H RS DO CU MENTATION RECO RD

-- REVIEW COVER SH EE T

Name of S ite: Keystone C orr i do r G ro un d W ater Contamina ti on

U.S. EPA ID N o. : INN000510399

Date Prepared: May 201 3

Co n ta ct P er so ns

Site In vestig ati on: Mark Jaw or sk i, Ind ia na De partment of En vi ron men tal Management (I D EM)
, Site I nv es ti ga ti on Program
, (317 ) 2 33

- 2407

Documen tati on R ec ord : Nur ia Mu n iz, Un ited Stat es E nv ironmen tal P ro tecti on Agency (E PA), Region V, (312 ) 886- 4439

Mark Jaw or sk i, Ind ia na De partment of En vi ron men tal Management (I DEM), Site I nv es ti ga ti on Program
, (317 ) 2 33

- 2407

Pat hways, Compo nen ts, or T hre at s Not Sc o red

Surf ace W ater Migr ati on P at hway , Soil Exposure Pathway, and Air Migration Pathway The Surf ace W ater Migr ati on P at hway
, Soil Exposure Pathway, and Air Migration Pathway s were not

sc or ed as part of this Haza rd Ranking S ys tem (HR S) evalu ati o n. Th ese p at hways w ere not includ ed b eca us e a r elea se to t h is med ia do es not signif ica n tl y affe ct the over all si te sc or e a nd b eca us e the g rou nd

wa ter p at hway prod u ces an over all s ite sc or e a bo ve the minimum requir ed for the s ite to qu ali fy for incl us ion on the N ati on al Pri or ities List (NPL).1 H RS DO CU MENTATION RECO RD

Name of S ite: Keystone C orr i do r G ro un d W ater Contamina ti on

EPA Id en ti f icati on N o. : INN000510399

U. S. EPA Region: 5

Date Prepared: May 2013

St r eet A ddr e ss of Site: The address of the s ite is at the intersection of N. Keystone Ave. and E. Fall Creek Pkwy N. Drive Ind ia na po li s, Marion C ou nty , Ind ia na 46205 (Ref. 136, p. 2)

Ge ner al Lo cati on in the St a te: Centr al Ind ia na (Fi gu re 1-1 of th is HRS do cumen tati on r ec o rd ; Ref. 122, p. 1; 130, p. 1 ) To po graph ic Map: Ind ia na po lis Eas t, Indiana Qu ad (7 .5’) (Ref. 3
, p

. 1) L ati tud e: 39 ° 50 '05" N ( Ref

. 78, p. 41; 137, p. 2 ) L on gitud e: - 86 ° 07 ' 18 " W ( Ref

. 78, p. 41; 137, p. 2 ) Site Referen ce Poin t: A ppro xim ate ce n ter of the g ro un d w ater plume

C on gre ss ion al Di str ict: 07

*No te: The str eet a ddr e ss es , c oo rdin ate s, and contaminant lo cati ons pr esen ted in t h is HRS do cumen tati on

r ec ord iden ti fy th e gener al ar ea the s ite is lo cate d. Th ey re pr esent one or m or e lo cati ons that U. S. EPA (EPA)

c on siders to be part of the s ite bas ed on the scr ee ning inform ati on EPA us ed to e v al ua te the s ite for NPL li s ti ng. EPA lists n ati on al pr i or ities am on g the kn own “r elea s es or thr eate n ed r elea ses" of h aza rdo us substan ce s; thus, the focus is o n t he r elea s e, not pr eci sely d eli n eated bo un dar ie s. A s ite is defin ed as wh ere a h aza rdo u s subs ta n ce h as b een “de po s ite d, st or ed, p lace d, or disposed, or has otherwise come to be lo cate d. " Ge ner all y, HRS sc or ing and the subsequen t li sting of a r elea se merely re pr esent the in itial d ete rmin ati on th at a

ce r tain ar ea may n eed to be addre ss ed un d er the Com pr ehensive Envi ron men tal Res po ns e, Compe ns ati on, and L ia b ili ty Act (CERCLA)

. A cc ord ingly, EPA contemp la t es th at the pr el iminary descrip ti on of fac ili ty bo un dar ies at the time o f sc or ing wi ll be refin ed as m or e inform ati on is dev el op ed as to wher e the contamin ati o n has come to b e l o cate d.

SITE SC ORING SU MM ARY P at hway Sc or es:

A ir P at hway Not Sc or ed G ro un d W ater P at hway 100 .00 So il Ex po su re P at hway Not Sc or ed Surf ace W ater P at hway Not Sc or ed

HRS SITE SCORE 50.002 WORKSHEET FO R COMPU TI NG H RS SITE SCO RE

S S 2

1. G ro un d W ater Migr ati on P at hway Sc or e (Sgw ) (from Tab le 3-1, li ne 13) 10 0.00 10, 0 00

. 00

2 a. Surf ace W ater Over la nd /Fl ood Mi gr ati on Component NS (from Tab le 4-1, li ne 30)

2b. G ro un d W ater to S urf ace Wat er Migr ati on Component NS

2 c. Surf ace W ater Migr ati on P at hway Sc or e (Ssw) NS En ter the la rg er of li nes 2a and 2 b as the p at hway sc or e.

3. So il Ex po su re P at hway Sc or e (Ss) NS

4. A ir Migr ati on P at hway Sc or e ( Sa) NS

5. To tal of Sgw 2+ Ss w2 + S s2 + S a2 10, 0 00

. 00

6. H RS Si te Sc o re 50. 00 Di vide the value on line 5 by 4 and ta ke the square roo t

NS N o t Scored3 TABLE 4-1 GROUND WATER MIGRATION COMPONENT SCORESHEET

Fact o r C ate g or ies a n d Fact or s M a x i m u m Va l u e Val u e A s s i gn ed G ro un d W ater L i k el i h oo d o f R elea s e to an A q u i f er 1

. O b s e r v ed R elea s e 550 550 2

. P o te n tial to R elea s e 2 a. C o n ta i n m e nt 10 NS 2b

. Net P r eci p itati o n 10 NS 2 c. De p th to A q u i f er 5 NS 2d

. T r a v el T i m e 35 NS 2 e. P o te n tial to R elea s e [ li n e s 2 a( 2 b + 2 c + 2 d ) ] 500 NS 3

. L i k el i h oo d o f R elea s e ( h i g h er o f li n e s 1 a n d 2 e) 550 550 W a s te Ch a r acte r i s tics 4

. T o x icit y /M ob ili t y a 10,0 0 0 5

. Haza rdo u s W a s te Q u a n ti t y a 100 6

. W a s te Ch a r acte r i s tics 100 32 T a r g ets 7

. Nea r e s t W ell b 50 8

. P op u lati o n 8 a. L e v el I C o n c e n t r ati on s b 9100 8b

. L e v el I I C o n ce n t r ati o n s b NS 8 c. P o te n tial C o n t a m i n ati o n b 1008 8d

. ( P o p u lati o n ( li n e s 8 a + 8 b + 8 c) b 10108 9

. R e s o u r c e s 5 0 10

. W ell h ead P ro tecti o n A r ea 20 20 11. Targets (lines 7 + 8d + 9 + 10) b 10178
Fact o r C ate g or ies a n d Fact or s M a x i m u m Va l u e Val u e A s s i gn ed G ro un d W ater M i g r ati o n Sc o r e f o r an A q u i f er 12

. A q u i f er Sc or e [( L i n es 3 x 6 x 1 1 ) / 8 2,5 0 0 ] c 100 100 .00
G ro un d W ater M i g r ati o n P at h w a y Sc or e 13. Pathway Score (Sgw) (highest value from line 12 for all aquifers evaluated) c 100 100 .00

a Maximum v al ue a pp lies to was te char acte ris tics cat egory. b Ma ximu m va lu e no t a pp lica b le. c Do no t roun d to nearest int eger NS Not Scored

# Plume Location - State of Indiana Keystone Corridor Ground Water Contamination Indianapolis, Marion County, Indiana

Mapped By: Mike Hill, Office of Land Quality Date: February 26, 2013

Sources: Non Orthophotography Data - Obtained from the State of Indiana Geographic Information Office (GIO) Data Library Map Projection: UTM Zone 16 N Map Datum: NAD83 Keystone Corridor Ground Water Contamination

State Boundary

County Boundary

Interstate

Lake Michigan 

# μ 0 2 5 5 0 M i l e s

0 25 50 Kilometers

Figure 1-12 Mile Radius 1 Mile Radius 1/4 Mile Radius

1/2 Mile Radius FC2 FC5 FC7

FC8 FC21

FC11

FC17 FC18

FC19 FC20

Ground Water Plume Centroid

Ground Water Plume Centroid

Fall Creek Wellfield Wells

Radius Buffer
WHPA 1yr
WHPA 5yr 

## Keystone Corridor Ground Water Contamination Distance from Ground Water Plume Centroid to Municipal Wells



# μ Project Area Marion County

Marion County

0 0

. 5 1 M i l e s

0 0.5 1 Kilometers Figure 1-2 Mapped By: Mike Hill, IDEM, Office of Land Quality, Science Services Branch, Engineering & GIS Services, February 28, 2013

Sources: -Non-orthophotography data obtained from the State of Indiana Geographic Information Officer’s (GIO) data library.

Orthophotgraphy: 2009 Marion County Orthophotography Project (6 inch resolution)

Map Projection Info: UTM Zone 16N, meters, NAD83

The source documentation for the location of the following wells in the Fall Creek Wellfield; FC2, FC5, FC7, FC8, FC11, FC17, FC18, FC19, FC20, and FC21 is based on the GIS layer GIO.WaterWithdraw_DNR_Water_IN . The state agency responsible for the creation and maintenance of this layer is the Indiana Department of Natural Resources, Division of Water.

WELL DISTANCE FROM PLUME CENTROID FC2 1318’ FC5 519’ FC7 1471’ FC8 611’ FC11 3329’ FC17 1045’ FC18 3802’ FC19 4564’ FC20 5184’ FC21 5734’44TH ST 45TH ST

Fal l Cre

ek

E2SG3 (FC-7) E2SF9 (FC-11) FC-21

E2R30 (FC-17) FC-18 FC-19 FC-20

E2SJ8

E2SJ6

E2SJ4

E2SH7 E2SH9 E2SJ1 E2SG7

E2SH5 E2SG4 E2SG1DL E2SG2 E2R05 (FC-2) E2QZ2 E2R00

E2QZ1

E2QZ3 E2R08

E2R09

E2SK0 E2R01

E2R26 E2QZ4DL E2R12

E2R13

46TH ST KEYS TON E AV

36TH S T FALL CREEK P KWY S DR 42ND ST RAL STON AV EVANST ON AV
NOR W ALDO AV

RUR A L ST HILLSIDE AV

O LNEY S T

PAR KE R AV LAS ALLE ST ERIE AV

SUTHER LAND

AV 38TH ST

Fall

Cre

ek Ground Water Plume Centroid

Ground Water Sample Location

Ground Water Plume Centroid
Ground Water Plume Boundary 

## Ground Water Plume Boundary - Keystone Corridor Ground Water Contamination Indianapolis, Marion County, Indiana



# μ Project Area Marion County

Marion County

0 750 1,500 Feet

0 250 500 Meters Figure 1-3 Mapped By: Lorraine Wright and Mike Hill, IDEM, Office of Land Quality, Science Services Branch, Engineering & GIS Services, March 5, 2013

Sources: -Non-orthophotography data obtained from the State of Indiana Geographic Information Office (GIO) data library.
-The Ground Water Plume Boundary was digitized by connecting The ground water sample locations that meet observed release criteria.

-Background samples are shown in a purple text. callout.
Orthophotgraphy: 2009 Marion County Orthophotography Project (6 inch resolution)

Map Projection: UTM Zone 16N, meters
Map Datum: NAD83

References: Obtained from Keystone Corridor Ground Water Contamination HRS Documentation Record -Background Ground Water Sample Table (Obtained from two established monitoring wells) -Background Ground Water Monitoring Well Sample Table (Obtained via a Direct Push Method) -Background Ground Water Well Sample Table (Obtained from operating Municipal Wells) -Contaminated Ground Water (Obtained by Direct Push) Sample Table -Contaminated Ground Water Obtained From Established Monitoring Wells Sample Table 1 -Fall Creek Municipal Well FC17 -Contaminated Ground Water Sample Table 2 (Municipal Well FC2) -Level I Samples (Fall Creek Municipal Well FC2) Table! !

! ! !

!

!

! !

! ! ! !

!

!

! !

! ( ! ( ! (

! (

! (

! ( ! (

! ( ! (

! (

! ( ! (

! ( ! ( ! (

!

( ! ( !

( ! (

! ( ! ( ! ( ! (

! (

! ( ! ( ! (

! (

! (

! ( ! (

! ( ! ( ! ( !

( ! (

! (

! ( ! (

Howall Products Inc 13359 UST (BP Connect) Commercial Building 24347 UST/L

(Walker Cleaners) Charles L Walker Inc 22638 UST/L Orman O Mckinley Co Inc 5587 UST

(Central Indiana Redi Strip, Inc.) REDI STRIP INC IND981002520 RCRA CARSON MFG CO INC IND006413561 RCRA BOWERS ENVELOPE CO IND006415277 RCRA TONY RAY LAUNDRY INC IN0001884667 RCRA

The Nickel Plate Improvement Co 18260 UST Thomas Caterers of Distinction 4040044 BNFD MERIDIAN HEIGHTS CLEANERS IND057527293 RCRA

Tuchman Cleaners Inc 199102503 STATE CLEANUP SITE

(The Works) Former Kmart/Zayres 22386 UST/L (JP Equipment, Inc.) Lumberman's Wholesale Supply 6030101 VRP Morellis One Hour Dry Cleaners 6070401 VRP

PURTEE PLATING 200606154 STATE CLEANUP SITE (Brite Laundry & Dry Cleaners) Former Vantage Point Cleaners 000000186 STATE CLEANUP SITE

H&R Block Parking Lot

Custom Welding Kenro Printing

Vacant Property 2-For-1 Cleaners Drewmont Graphics

Elite Printing, Inc.

Sixty-Minute Cleaners

Quick (Kwick) Stop Cleaners Sign Co

Serigraphic SPARKLE CLEANERS IN0001200450 RCRA

Van Westrum Corp. Bane-Clene Systems Schouten Metal Craft

Service Technologies

Mortgage Center, Inc. International Furniture

Clean Scene Drycleaners

Broad Ripple Fitness Center

Keystone 40 Minute Cleaners, Inc. KEYSTONE AV

! ( Potential Source
Ground Water Plume Boundary
WHPA 1yr
WHPA 5yr 

## Potential Sources - Keystone Corridor Ground Water Contamination Indianapolis, Marion County, Indiana



# μ Project Area Marion County

Marion County

0 1,500 3,000 Feet

0 500 1,000 Meters Figure 1-4 Mapped By: Mike Hill and Lorraine Wright, IDEM, Office of Land Quality, Science Services Branch, Engineering and GIS Services, March 4, 2013

Sources: -Non-orthophotography data obtained from the State of Indiana Geographic Information Office (GIO) data library.

-Potential Source locations obtained from "Phase I - Revised Indianapolis Water Wellhead Protection Plan, dated March 2007, revised September 2007, prepared for Indianapolis Water, Table 3-9 Potential Source Inventory - Fall Creek Wellhead Protection Area" (Ref. 116, pp. 47 to 57): Ref 129, pp. 2,3

-Potentail Source locations for IDEM regulated facilites from GIO data layer "GIO.OLQ_All_DATA".

-Ulrich Chemical, 3111 North Post Road, from the above list is not in the WHPA.

-Ground Water Plume Boundary copied from "Ground Water Plume Boundary Map, Keystone Corridor Ground Water Contamination" dated 1-29-13, Figure 1-3 of the HRS documentaion record.

Potential Source Label: (Site Name) - from Indianapolis Water Wellhead Protection Plan IDEM Facility Name IDEM Facility Number IDEM Regulatory Program

Orthophotography: 2009 Marion County Orthophotography Project (6 inch resolution)

Map info: UTM Zone 16N, NAD83, meters8 REFERENC ES

Re f erence Num ber De s crip tion of t he Re f erence

1. U. S. E nv ironmen tal P ro tecti on Agency, Haza rd Ranking System, Fin al Ru le 4 0 C FR Part 300, Vol. 55, No. 241, Dec emb er 14 , 1 990 . 138 pages. An electronic copy of the HRS is available at: http://www.epa.gov/superfund/sites/npl/hrsres/index.htm#HRS Rule

2. U. S. E nv ironmen tal P ro tecti on Agency, Superfund Chemic al Data Mat r ix (SCD M)
, March 31
, 201 2, http://www.epa.gov/superfund/sites/npl/hrsres/tools/scdm.htm. 12 pages , excerpt

.

3. U.S.G.S., Indianapolis East Qua dr ang le Topograph ic Ma p. 1998. 1 pag e.

4. Dam es & Moor e, Remed iati on Assessment and G ro un d W ater Asse ss ment Re por t, Oct ob er 3, 1995 . 23 pages.

5. A lt & W itz ig En gin ee ring, Inc., E nv i ron men tal In vestig ati on of Tuchman C le aners Fa c ili ty , A ugust 22
, 19 89. 61
pages.

6. Sa gam or e E nv ironmen tal Se rv ice s, In c. G ro un d W ater Samp li ng, Dec emb er 3
, 199 6. 64 pages.

7. Ind ia na De partment of Envi ron men tal Management, Memo from Ju liet P or t, Indiana Department of Environmental Management Licensed Professional Geologist, to Mark Jaw or sk i, Subject: Keystone/Fall Creek Wellfield, May 12, 2012

. 39 pages.

8. Dam es & Moor e, Dr aft Report Phase 2 Investigation/Remediation, Tuchm an C le aners, Ja nu ary 16 , 19 96 . 4 8 pages.

9. Reference Number Reserved

.

10. A lt & W itz ig En gin ee ring, Inc., So il Gas Survey , Tuchman Cleaners Facility
, Dec emb er 6
, 19 89 . 2 9 pages.

11. A lt & W itz ig En gin ee ring, Inc., Sub su rf ace In vestig ati on, Tuchman Cleaners, Ma y 11
, 19 89. 1 4 pages.

12. Ind ia na De partment of Envi ron men tal Managemen t, Unif or m Haza rdo us Was te Manifes t, Vantage Point Cleaners, A

pr il 18 , 1 991 . 2 pages.

13. Dam es & Moor e, Draft Summary Report, G ro un d W ater Remed iati on Mon it or ing, March 27, 1998. 186 pages.

14. Ind ia na De partment of Envi ron men tal Management, I ns p ecti on Su mm ary L etter to Mr . M ic h ael Overton, O wne r / O perator F ormer Purtee Plating, from Rosemary Cantwell, Section Chief, J un e 26
, 20 06. 4 0 pages.

15. A lt & W itz ig En gin ee ring, Inc., Bi-An nu al Re por t, Tuchman Cleaners Facility, Se ptemb er 4
, 1 99 1. 168 pages.

16. Dam es & Moor e, Su mm ary Re por t G ro un d W ater Remed ia tion Mo n it or ing, December 1995 through December 1999, Tuchman Cleaners, A pr il 11 , 2 00 0. 19 0 pages.

17. UR S, Su mm ary Re por t G ro und W ater Remed iati on Mo n it ori ng , December 1995 through December 2000, Tuchman Cleaners, May 22
, 20 01. 153 pages.

18. UR S, Analy tical Results Sec ond Quar ter 20 02 G ro un d W ater Sa mpli ng , July 30
, 200 2. 47 pages.

19. University of Minneso ta, Lynda Ellis and Sean Anderson, T et r ac hl oro et hene P at hway Map (An ae rob ic ), A ug us t 15
, 2011 . 5 pages.

20. UR S, In te rim S um mary Re po r t Sta ge 1 Field A ct iv iti es G rou nd W ater I nv estig ati on, Tuchman Cleaners Facility, Novemb er 1, 2002 . 289 pages.9 21. UR S, Analy tical Resu lts Fourth Quar ter 200 2 G ro un d W ater Sampli ng , January 30
, 2003

. 39 p ages.

22. UR S, Su mm ary Re por t G ro und W ater Remed iati on Mo n it ori ng Through 2002
, Fe br uary 21, 200 3. 114 pages

.

23 . UR S, Re por t Remed ial In vestig ati on, Tuchman Cleaners, A pr il 4
, 2003 . 569 pages.

24 . UR S, Analy tical Resu lts Sec ond Quar ter 200 3 G ro un d W at er Samp li ng, July 30
, 20 03. 11 pages.

25 . UR S, In te rim S um mary Re po rt Sta ge I Field A ct iv iti es, Remedial Investigation (RI) Phase II, Tuchman Cleaners Facility, J un e 9
, 20 04 . 54 pages.

26 . UR S, Re por t Remed ial In vestig ati on – Phase II
, Tuchman Cleaners, Novemb er 24
, 20 04. 135 pages.

27

. Ind ia na De partment of Envi ron men tal Managemen t, L etter from Dawn M. Groves, State Cleanup Section, Office of Land Quality, t o Mr . Randy J ac ks on and Mr

. Gil bert Zemansky Re: Remedial Investigation Report Tuchman Cleaners , June 18 , 20 03 . 4 pages.

28 . UR S, Analy tical Resu lts First Quar ter 200 5 Gro un d W ater Mo n it or ing, Tuchman Cleaners Facility, A pr il 29 , 2 005 . 1 1
pages.

29. In dia na Depar tment of En viron men tal Management, Em ail from James Sul li van , Chief, IDEM Ground Water Section, to Mark Jaw or ski Reg ardi ng W ell Head P rotection Area f or

the Fall C reek Station W el ls, J un e 26, 2 01 2. 2
pa ges.

30 . UR S, Analy tical Resu lts Third Quar ter 200 5 I nv estig ati on Acti v iti es Tuchman Cleaners Facility
, Oct ob er 31
, 20 05. 26 pages.

31

. UR S, Analy tical Resu lts First Quar ter 200 6 Gro un d W ater Mon it or ing Tuchman Cleaners Facility , A pr il 24 , 2 006

. 1 2 pages.

32 . UR S, Analy tical Resu lts Fourth Quar ter 200 5 G ro un d W ater Mo n it or ing Tuchman Cleaners Facility , Ja nu ary 26
, 200 6. 11 pages.

33 . UR S, Analy tical Resu lts Sec ond Quar ter 200 6 G ro un d W at er Mo n it or i ng Tuchman Cleaners Facility , July 31
, 20 06. 12 pages.

34 . UR S, Analy tical Resu lts Third Quar ter 200 6 Gro un d W ater Mon it or ing Tuchman Cleaners Facility
, Oct ob er 31, 20 06. 11 pages.

35. URS, Analytical Results Fourth Quarter 2006 Ground Water Monitoring Tuchman Cleaners Facility , January 9, 2007. 10 pages

.

36 . UR S, Analy tical Resu lts First Quar ter 200 7 Gro un d W ater Mo n it or ing Tuchman Cleaners Facility , A pr il 30 , 2 007

. 1 0 pages.

37

. UR S, Analy tical Resu lts Sec ond Quar ter 200 7 G ro un d W at er Mo n it or i ng Tuchman Cleaners Facility , July 31
, 20 07. 1 0 pages.

38 . UR S, Analy tical Resu lts Third Quar ter 200 7 Gro un d W ater Mo n it or ing Tuchman Cleaners Facility
, Oct ob er 31
, 20 07. 12 p ages.

39 . UR S, Analy tical Resu lts Fourth Quar ter 200 7 G ro un d W ater Mo n it or ing Tuchman Cleaners Facility , Ja nu ary 31
, 200 8. 11 p ages.

40 . UR S, Analy tical Resu lts Fi rst Quarter 200 8 G ro un d W ater Mo n it or ing Tuchman Cleaners Facility , A pr il 30 , 2 008 . 1 1
pages.10 41 . UR S, Analy tical Resu lts August 200 8 G ro un d W ater Mo n it ori ng Tuchman Cleaners Facility
, Oct ob er 21, 2008 . 11
pages.

42 . Ind ia na State Board of Healt h, Di vision of Land Po ll u ti on Cont ro l, Uniform H aza rdo us Was te Manifes t, Dec emb er 10, 1 98 6 th rou gh Fe bruary 11
, 1997 . 68 pages.

43. In dia na Depar tment of En viron men tal Managemen t, Unif orm Hazardo us Was te Manifes t, A pril 18, 1 991 th ro ug h May 12, 19 9 5. 21 pa ges.

44

. Sees Eq uipment & Su pp ly Company, Inc., In vo ice s to Vantage Cleaners
, Dec emb er 11, 1992 th ro ug h November 27, 1996 . 4 7 pages.

45 . A lt & W itz ig En gin ee ring, Inc., Phase I E nv i ron mental Assessment with Mo n it or ing W ell s, M ay 9
, 19 96 . 4 pages.

46

. Sa gam or e E nv ironmen tal Se rv ice s, Inc., G ro un d W ater Samp li ng Re por t for 440 5 A lli sonv ille Road , undated . 65 pages.

47. Reference Number Reserved

.

48

. State of Indian a, County of Marion, Ra ms ey De v el op ment C orp . and T & N Partne rsh ip , Plaintiffs, vs . Tuchman C le aners Inc., and P.J. L. Inc. d/b/a Vantage Point Cleaners, Defendants
, U. S. E nv ironmen tal P ro tecti on Agency Me mo ra ndum in Su ppor t of De fendant P. J

. L., In c. ’s Mo ti on for Su mm ary Ju dg men t, May 21, 1999 . 12 pages.

49 . Ind ia na De partment of Envi ron men tal Managemen t, l etter to The Es tate of Mr

. Ge or ge Pulos & Ms. Kat herine Theofanis Re: Follow

- up R equest for I nformation C oncerning the P roperty L ocated at 4449 Allisonville Rd., Indianapolis, Indiana , January 6
, 2004 . 3 pages.

50

. Sea Br eeze T ec hn olog ie s, LL C, Site I nv estig ati on Re por t Allisonville Road Site , J un e 21
, 20 04. 5 4 pages.

51

. St. Jo hn -M itte lhaus er & A ss o ciate s, Phase I I I nv es ti ga ti on Re por t for the form er dry cle aning op er ati ons at 444 9 A ll is on v il le Road, Indianapolis, IN, Ja nu ary 4
, 20 08. 7 8 pages.

52 . Ind ia na De partment of Envi ron men tal Managemen t, Sp ecial No tice of L ia b ili ty, Former Vantage Point Cleaners, July 9
, 20 10

. 4 pages.

53 . Pi nn acle En vi ron men tal, Va por Intr us ion In vestig ati on W or k P la n Former Vantage Point Cleaners, Ja nu ary 28
, 2011

. 2 pages.

54 . Ind ia na De partment of Envi ron men tal Managemen t, letter to Mr . Trav is May, Regis te r ed Agen t, Fe br uary 16
, 20 12. 2 7 pages.

55

. Marion Superior Cour t, Ramsey De v el opment C orp . and T & N Partnership, Plaintiffs, vs . Tuchm an C lea ners, Inc., Raouf Hanna d/b/a Brite Laundry & Drycleaning, Brite Laundry, Inc. and P.J.L. Inc. d/b/a Vantage Point Cleaners, Defendant. May 15, 1998 . 1 5 pages.

56 . Marion Superior Cour t, Ramsey De v el opment C orp . and T & N Partnersh ip , Plaintiffs, vs . Tuchman C lea ner s Inc., Ra ou f Ha nna d/b /a Br ite La un dry & Dryc lea ning , Brite Laundry, Inc., and P.J.L. Inc. d/b/a Vantage Point Cleaners, Defendants , Answers to P lai ntiffs’ Fi rst Set o f In te rro g at or ie s, Se ptemb er 17
, 199 8. 16 pages.

57 . Marion Superior Cour t, Ramsey De v el opment C orp . and T & N Partnership, Plaintiffs, vs . Tuchm an C lea ners Inc., Ra ou f Ha nn a d/b /a Br ite La un dry & Dry C le ani ng , Brite Laundry, Inc. and P.J.L. Inc. d/b/a Vantage Point Cleaners, Defendants , Answers to P lai ntiffs’ First Set of In te rro g at or ie s, Oct ob er 28
, 199 8. 18 pages.

58

. Marion Superior Cour t, T & N Partner sh ip, Plaintiff, vs . Tuchman Cleaners Inc., and P.J.L. Inc. d/b/a Vantage Point Cleaners, Defendants, P lai ntiff’s Br ief i n O ppo s iti on to De fendant P. J. L., Inc .’ s Mo ti on for S um mary Ju dg men t, August16, 1999

. 23 p ages.11 59 . UR S, Analy tical Resu lts Third Quar ter 200 2 Gro un d W ater Sampli ng , Tuchman Cleaners Facility, Oct ob er 21 , 20 02

. 44 p ages.

60. Marion Superior Court, Ramsey Development Corp. , et al., Plaintiffs, vs. Tuchman Cleaners Inc., Raouf Hanna d/b/a Brite Laundry & Drycleaning , Brite Laundry, Inc., and P.J.L. Inc. d/b/a Vantage Po int Cleaners, Defendants
, Defendant Tuchman’s Responses to Plaintiffs T & N Partnership and Ramsey Development C orp. ’s Fi rst Set of In te rro g at or ie s, July 30
, 19 98. 24 pages.

61 . Marion Superior Cour t, Ramsey De v el opment C orp . and T & N Partnership, Plaintiffs, vs . Tuchm an C lea ners Inc., Ra ou f Ha nn a d/b /a Br ite La un dry & Dry clea ning , Brite Laundry, Inc. and P.J.L. Inc. d/b/a Vantage Point Cleaners, Defendants
, De fendan ts ’ Br ief In S uppor t Of Th eir Mo ti on For S um mary Ju dg men t, Ja nu ary 26
, 1999 . 3 5 pages.

62

. Reference Number Reserved

.

63 . Ind ia na De partment of Envi ron men tal Managemen t, Off ice Mem or an du m , from Sarah Finley Johanson, Geologist, to Dawn Groves, State Cleanup, Re: P ropo s al Upd ate A dd iti on al Phase I I I nv es ti gation April 23, 2009 Thomas Caterers Indianapolis, Marion County, Site #0000211 (CZ05V) , J un e 19
, 20 09. 3 pages.

64

. A lt & W itz ig En gin ee ring, Inc., Phase I I I nv estig ati on : Thomas Caterers of Distinction , A pr il 15 , 2 010 . 70 pag es.

65 . Ind ia na De partment of Envi ron men tal Managemen t, Off ice Mem or an du m from Sarah Finley Johanson, Geologist, to Dawn Groves, State Cleanup, Re: Phase I I I nv es ti gation April 15, 2010 Thomas Caterers Indianapolis, Marion County, Site #0000211 (CZ05V) , May 19
, 2010 . 3 pages.

66 . Ind ia na De partment of Envi ron men tal Managemen t, L etter from Dawn Groves, State Cleanup Program Office of Land Quality, t o Ms. S us ann A. Thomas-Cra nn ell , S & F Land Development LLC, and Ms. Kel ly Early , Thomas Caterers of Distinction , Re: Phase I I I nv estig ati on Thomas Caterers of Distinction , J un e 30
, 20 10. 4 pages.

67 . UR S, Su mm ary Re por t: G ro un dw ater Remed iati on Mon it ori ng , Tuchman Cleaners , A pr il 12
, 20 02. 6 5 pages.

68

. Reference Number Reserved

.

69 . A lt & W itz ig En gin ee ring, Inc., Remedial Design for Tuchman Cleaners , July 2
, 19 90 . 30 pag es.

70

. Reference Number Reserved

.

71

. Reference Number Reserved

.

72 . Ind ia na De partment of Envi ron men tal Management, Letter from Harry E. Atkinson, Chief State Cleanup Section Office of Land Quality, to Guy Ramsey, T&N Partnership L.P. , Re: Request for inform ati on con ce rning the prop erty l ocated at 44 05 A lli so nv i lle R d. , Se ptemb er 10 , 20 04 . 2 pages.

73 . UR S, Su mm ary Re por t G ro undw ater Remed iati on Monitoring th roug h 2002
, Fe br uary 21
, 2003 . 102 pages.

74 . A lt & W itz ig En gin ee ring, In c. , Fea sibility St udy : Tuchman Cleaners Facility
, Dec emb er 7
, 19 89. 13 pages.

75 . Ind ia na po lis W ate r, Letter from Dale M. Pershing, Water Quality and Compliance Specialist, to IDEM State Cleanup Program Attn: Dawn Groves, Re: Requested VOC Data, July 11
, 2005 . 8 pages.

76

. UR S, Letter from William R. Eckhoff, Geologist, and Dennis P. Connair, Principal, to IDEM Attn: Ms. Dawn Groves, State Cleanup Program Office of Land Quality , Re: Analy tical Resu lts Sec ond Quar ter 200 5 G ro un dw at er Mo n it or i ng Tuchman Cleaners Facility , July 22
, 20 05. 1 1 pages.

77

. Reference Number Reserved

.12 78 . Ind ia na De partment of Envi ron men tal Management, Letter (Memorandum of Decision) from Steve McIntire, IDEM Project Manager Site Investigation Section Office of Land Quality, to Pat Hamblin, EPA Region 5, with attached Site I ns p ecti on Re por t, Keystone C orr i dor Ground Water Contamination Site , Ja nu ary 31, 20 10

. 28 9 page s.

79 . Ind ia na De partment of Envi ron men tal Management, Expand ed Site I ns p ect ion Re por t, Keystone C orr i dor Ground Water Contamination Site
, Mar ch 28 , 20 12

. 26 3 pag es

.

80 . U. S. E nv ironmen tal P ro tecti on Agency, Region 5
, Ch emistry Data P ac kag e, December 2011 . 179 pages.

81 . U. S. E nv ironmen tal P ro tecti on Agency, Region 5
, Ch emistry Data P ac kag e, December 20 11. 1 84 pages.

82 . Burns E nv i ron men tal E ng ineeri ng , Inc., Subsurf ace In ves ti g ati on Re por t, Form er Pur tee Plati n g, Ja nu ary 23
, 2012

. 266 pages.

83

. Troy Risk Inc., Sub su rf ace In vestig ati on Re por t : Former Purtee Plating Facility
, November 14, 2007 . 185 pages.

84

. Ke ramid a, Subsurf ace I nv estig ati on Re por t : Former Purtee Plating , Ja nu ary 22 , 20 10 . 684 pages.

85

. Reference Number Reserved

.

86 . Ind ia na po lis W ate r, Letter from Dale M. Pershing, Manager of Quality and Compliance, Veolia Water Indianapolis LLC, to IDEM Attn: Dawn Groves, Re: Requested Hi st or ical Raw Fall Cr eek W ells VOC Data, Se ptemb er 15 , 2 004

. 6 2 pages.

87 . IWC Se rv ice s, Inc., VOC La bor at ory Anal ys is for FC Wells 2, 5 and 11 , Novemb er 16, 2 00 1. 3 pages.

88 . IWC Se rv ice s, Inc., Organic La bor at ory Anal ys is for FC Wells 2, 8, 11 and 17 , August 5-6
, 199 8. 4 pages.

89 . IWC Se rv ice s, Inc., VOC La bor at ory Anal ys is for FC Wells 2, 5, 7, 8, 11 and 17
, Oct ob er 8
, 20 01 . 6 pages.

90

. Beranek, B ill , Draft No tes of TAG Gro un d W ater W or king G ro up Meeti ng, July 12, 20 05 . 1 0 pages.

91

. Reference Number Reserved

.

92

. Reference Number Reserved

.

93 . Ind ia na De partment of Envi ron men tal Management, Email from Nur ia Mun iz (E PA Region 5 Superfund Division NPL Coordinator ) rega rd ing planned EPA remov al acti vi ties at Tuchman Cleaners
, July 16
, 20 12. 1 page.

94

. Reference Number R eserved

.

95

. IDEM, Email from Eric Johnson to Mark Jaworski, August 20, 2012. 2 pages.

96 . U. S. E nv ironmen tal P ro tecti on Agency, Region 5
, Review of Data, Keystone Corridor GW Contamination (IN)
, Fe br uary 24
, 2010 . 190 pages.

97 . U. S. E nv ironmen tal P ro tecti on Agency, Region 5
, Review of Data, Keystone Corridor GW Contamination (IN)
, Fe br uary 4
, 2010 . 7 4 pages.

98

. U. S. E nv ironmen tal P ro tecti on Agency, Region 5
, Review of Data, Keystone Corridor GW Site (I N), A pr il 15
, 20 10. 89 pages.

99 . U. S. E nv ironmen tal P ro tecti on Agency, Region 5
, Review of Data, Keystone Corridor GW Contamination (IN)
, Ma r ch 22
, 2010 . 7 8 pages.

100 . Ind ia na De partment of Envi ron men tal Management , Email from Travis Cole, IDEM Geologist, to Steven McIntire, Re: Fall Creek Well Field, January 17, 2012. 4 pages

.13 101 . Ind ia na De partment of Envi ron men tal Management
, Ground Water Sample Location and Analytical Map , Keystone Corridor Groundwater Contamination
, mapped by Mike Hill, August 14 , 2012. 1 page

.

102 . Ind ia na De partment of Envi ron men tal Management, Email from Ste ven McIn ti re to Ma rk Jaw or sk i, Fall Cr eek In formation, May 29
, 2012. 24 pages.

103 . Ind ia na De partment of Envi ron men tal Management, Em ail from Er ic Johnson , IDEM Environmental Chemist 2, to Mark Jaw or sk i, U pd ated Keystone So il Tab le, M ay 31
, 201 2. 2 pages.

104

. Reference Number Reserved

.

105

. Reference Number Reserved

.

106

. Citizens Energy Group

. Em ail from Alan Wisem an , Environmental Engineer, Citizens Energy Group, to Ma rk Jaw or sk i, Re: Fall Creek Treatment Plant Population Equivalent plus Fall Creek Well Withdraws [ sic ], J un e 7
, 20 12 . 4
pages.

107

. Ind ia na De partment of Envi ron men tal Management, Em ail from Dawn Grov es to Mark Jaw or sk i, Re: Site Referral: Former Tuchman Cleaners, June 14
, 20 12 . 5 pages.

108 . Ind ia na De partment of Envi ron men tal Management, Em ail from Ha rry At ki ns on to Mark Jaw or sk i, Re: Site Referral: Former Tuchman Cleaners, J un e 15 , 2 012 . 3 pages.

109 . McIn ti re, Ste ve, A ff idav it of Ste ve McIn ti re rega rd ing C it y Di r ect ory Sea r ch for Dry C le aning Opera ti on s in the City of Indiana po li s, July 19
, 20 12. 1 page.

110 . Ind ia na De partment of Envi ron men tal Management, Email from Dawn Grov es , State Cleanup Program Office of Land Quality, to Mark Jaw or ski rega rd ing 440 1 N. Ke yston e, A ug us t 1
, 20 1 2. 3 pages.

111

. A4 Scientific, Inc.
, Ch ain of Cust od y Records , Novemb er 18, 20 11 . 6 pag es

.

112 . Ind ia na De partment of Envi ron men tal Management, Email from Er ic Johnson , IDEM Environmental Chemist 2, to Ma rk Jaw or sk i, Re: Keystone Corridor Data Tables, August 9
, 201 2. 11 pages.

113

. Reference Number Reserved

.

114. Ind ia na De partment of Envi ron men tal Management , Email from Dawn Groves to Mark Jaworski, Re: Tuchman Cleaners’ parent files for bankruptcy, September 7, 2012. 3 pages.

115. Ind ia na De partment of Envi ron men tal Management , Email from Dawn Groves to Mark Jaworski, Re: Former Tuchman Cleaners, September 7, 2012

. 3 pages.

116. Veolia Water, Indianapolis Water Wellhead Protection Plan, Phase I Revised, March 30, 2007, September 2007 Revision . 304 pages.

117. Indiana Department of Environmental Management, Email from Ann McIver to Mark Jaworski, Re: DNR Significant Withdrawal Reports for Fall Creek (Calendar Year 2011), January11, 2013. 3 pages.

118. U.S. E nvironmental Protection Agency , Using Qualified Data To Document an Observed Release and Observed Contamination, EPA 540 -F- 94

- 0.28
, OSWER 9285.1

- 14FS
, PB94

- 963311. November 1996. 18 pages.

119. US Environmental Protection Agency, Contract Laboratory Program, Statement of Work for Organic Analysis, Multi

- Media, Multi

- Concentration SOM01.1. May 2005

. 206 pages.

120. Agency f or Toxic Substances and Disease Registry ( ATSDR ) , Trichloroethylene Fact Sheet, CAS #79

- 01

- 6, July, 2003

. 2 pages.14 121 ATSDR, T etra chloroethylene Fact Sheet, CAS # 127

- 18 -4 , September 1997

. 2 pages.

122. Indiana Department of Environmental Management, Email from Shane Moore to Mark Jaworski, Re: GPS Accuracy Standards, January 16, 2013. 1 page.

123 Indiana Department of Environmental Management, Email from Dawn Groves to Mark Jaworski, Tuchman Cleaners/44 01 N, Keystone/Indianapolis, January 16
, 2013. 3 pages

.

124. Indiana Department of Environmental Management, Record of Site Closure, Walker Cleaners, March 6, 2012. 140
pages.

125. Environmental Forensic Investigations, Inc., Site Investigation Report, C ollege 60 M inute Cleaners, July 26, 2012. 628 pages.

126. Astbury Environmental Engineering, Further Site Investigation, Former Quick Stop Cleaners, August 20, 2008. 118
pages.

127. Patriot Engineering and Environmental, Inc., Voluntary Remediation Progr am (VRP) Application, Morellis Dry Cleaners Project Site, April 5, 2007. 28 pages.

128. Indiana Department of Environmental Management, File Review Further Site Investigation Request, Former Commercial Building, May 23, 2011. 5 pages.

129. Indiana Depart ment of Environmental Management, Email from Juliet Port to Mark Jaworski, Keystone Project – Ref

. 129, January 22, 2013. 3 pages

.

130. Indiana Department of Environmental Management, Email from Michael Hill to Mark Jaworski, S tate of Indiana Geographic Information Officer’s Spatial Database Engine, January 22, 2013. 2 pages

.

131. Indiana Department of Environmental Management, Email from Juliet Port to Mark Jaworski, Keystone Reference, January 23, 2013. 7 pages.

132 United States Department of Agricul ture, Soil Survey of Marion County, Indiana, September 1978. Excerpt 8 pages.

133. Indiana Geological Survey, The Hydrogeologic Framework of Marion County, Indiana, Open

- file Report 93

- 5. Excerpt 7 pages.

134 United States Department of the Interior, U. S. Geological Survey, Indianapolis West
, Indiana Quadrangle, 1998. 1
page

.

135. Indiana Department of Environmental Management, Email from Juliet Port to Mark Jaworski, Keystone DNR Well Logs, January 23, 2013. 26 pages.

136. U.S. EPA, Email from Mark Jaworski to Tonya Randolph with attachment (Superfund Site Information)
, http://cumulis.epa.gov/supercpad/cursites/csitinfo.cfm?ld=0510399 , January 24, 2013. 2 pages

.

1 37. Indiana Department of Environmental Management, Email from Michael Hill to Mark Jaworski, Re: Keyston e Corridor Ground Water Contamination Latitude and Longitude Documentation, January 22, 2013. 2 pages.

138. Reference Number Reserved.

139. Indiana Department of Environmental Management, Letter from Bruce Palin ( Assistant Commissioner) R egarding Keystone Corridor Ground Water Contamination HRS Documentation Record Confidential and Draft Reports
, January 31, 2013. 1 page.15 140. Indiana Department of Environmental Management, Email from Michael Hill
, GISP, Senior Environmental Manager, to Mark Jaworski, Plume Measurement Documentation, January 31, 2013. 2 pages.

141. Indiana Department of Environmental Management, Email from Michael Hill , GISP, Senio r Environmental Manager, to Mark Jaworski, Plume Centroid to Municipal Wells Measurement , February 4, 2013. 2 pages.

142. Indiana Department of Environmental Management, Email from Dan Chesterson to Mark Jaworski, Keystone Corridor municipal water samples (Nov. 2011), February, 6, 2013. 1 page.

143. Indiana Department of Environmental Management, Email from Steve McIntire, Geologist, to Mark Jaworski
, Keystone Corridor Field Sampling Event, February, 6, 2013. 1 page

.

14 4. Indiana Department of Environmental Management, Affidavit of Mark Jaworski, Regarding Water Distribution from Citizens Energy Group, March 6, 2013. 1 page.

145. Indiana Department of Environmental Management, Project Note Keystone Corridor HRS Documenta tion Record, Regarding Bias of Qualified Data, Prepared by Eric Johnson, Environmental Chemist 2, March 11, 2013. 1 page.16 SITE SU MM ARY Keys to ne Co rrid or Gro und W at er Contam in at i on

The Keys to ne Co rrid or Gro und W ater Contamination is a ground water plume with commingled contamination that has released to the water in one (1 ) municipal water well
, FC2 ( Ref. 101 , p. 1; 122, p. 1; 130, p. 1; Figure 1

- 3 and Section 3.1.1 of this HRS documentation record ). The aquifer in which the plume is located is a combined aquifer consisting of an outwa sh aquifer and a karst aquifer. Althoug h the aquifers have different physical properties, they can be considered a single combined aquifer due to their clear connectivity ( Ref. 102, p. 24 and Section 3.0.1 of this HRS documentation record )

. Eight other active municipal wells (FC 5, FC7, FC8
, FC11 , FC18, FC19, FC20, and FC21 ) that are located in the immediate area have a potential to become contaminated ( see Section 3.3.2.4 and Figure 1-2 of this HRS documentation record ). The plume consists of chlorinated solvents, specifically tetrachloroethene (PCE), trichloroethene (TCE), vinyl chloride (VC), and cis

- 1, 2- dichloroethene (cis

- 1, 2 DCE ) ( see Co ntaminated Gro un d Wa te r (Obt ai ned b y D i rec t Push) Samp le Tab le of this HRS documentation record; Contamin ated Ground W ater Ob ta ined From Es ta bli shed Mo ni to ring Wells Sam ple Ta ble 1 of this HRS documentation record ; Fall Cr eek Mun ici p al W ell FC1 7 Table of this HRS documentation record ; Contamin ated Ground W ater Sam ple Ta ble 2 (M unicip al Well FC2) of this HRS documentation record).

TCE, VC, and cis

- 1,2 DCE are degradation products of PCE ( Ref. 19, pp. 1 –5). The extent of the ground water plume is depicted by municipal wells and monitoring wells known to contain volatile organic compounds at concentrations meeting observed release criteria ( Ref. 1, Table 2

- 3, Figure 1

- 3 and Section 3.1.1 of this HRS documentation record; 122, p. 1; 130, p. 1 ). T he plume currently measures approximately 4500 feet long (north to south) and approximately 1500 feet wide (east to west) ( Ref. 122, p. 1; 130, p. 1; Figure 1

- 3 of this HRS documentation record). The plume and wells are located in the same combined aquifer ( Sections 3.0.1 and 3.1.1 of this HRS documentation record ).

O ve r f orty known users or handlers of solvents have been identified by name as possible sources in this HRS documentation record ( Ref. 129, pp. 1 -3 ; 116, pp. 48

- 57 ; Figure 1

- 4 of this HRS d ocum entation r ecord ; 122, p. 1; 130, p. 1 ). Due to the c omplex g eology and high number of known and potential sources of chlorinated v olatile organic compounds in the project area, it is not feasible to directly link any source to the contaminant s encountered in the plume (Ref. 7, p p . 3, 5; Figure 1

- 4 of this HRS d ocumentation r ecord ; 122, p. 1; 130, p. 1 ; Description of O ther Possible Sources Section and Section 3.0.1 of this HRS documentation record).

Fa ll Creek M unicip al Wells C itiz ens W ater u ti lity op er ates nine (9) active mun icip al we lls in the Fall Cr eek well fie ld of Indianapolis, Ind ia n a, as part of the C itiz ens W ater sys tem (Ref. 106 , p

. 4). The well f ield is lo cated in the n or th ea st s ect or of th e ci ty and

su

pp lies w ater to a ppro xim at ely 122,74 4 pe op le (R ef . 3
, p

. 1; 106 , p. 3; 102, p. 21; 122, p. 1; 130, p. 1; Fi gu re 1-2 of this HRS documenta ti o n r ec ord ). Two (2) of the nine (9) active mu n ici p al g rou nd wa ter su pp ly w ells (FC2 and FC 5)
, have h ad hist or ical d etecti on s of vari ou s vo latile or gan ic com pou nds ( VO Cs ), no ta bly chl or ina ted solvents (Ref. 75
, p. 4; 78, pp . 1 24
, 125
, 2 03

- 205 ; 75 , pp. 3
, 4; 86, pp. 1, 4, 7, 8, 10, 19, 20, 22, 23, 28, 29, 31, 32, 34

- 45 , 49, 51, 60 ; 87
, pp . 1
, 2; 88 , p

. 1; 89, pp. 1
, 2, 5; 102
, pp

. 12

– 18, 23 ). M un ici p al well FC2 (E2S G 1) con ta in ed con ce ntr ati ons of vinyl chl or ide a bo ve the Maximum Contaminant Lev el (M CL) of 2 μg /l s et by the U. S. En vi ron men tal P ro tecti on Agency (U. S. EPA) (Ref. 2, p. 12; 79, p. 205; 80 pp. 5, 7, 56

- 57; 111, p. 2; 112, p. 10). FC5 contained levels of TCE below the MCL (Ref. 78 , pp. 205 ; 96
, pp . 1, 5
, 6, 17 , 18, 39, 1 13

- 115 ). The us e of municipal w ell FC17 was restr icted b eca us e the w el l’s lo cati on w as in th e p athof a g ro un d wat er plume (Ref. 90 , p. 10 ; 102, p. 23; 139, p. 1 ).

Investi gat ing Pot en ti al Gro und W at er Plume So urc es Assessing potential ground water plume sources began with investigating the former Tuchman Cleaners facility, located at 4401 North Keystone Avenue, Indianapolis, Indiana, which operated from 1952 through 2008 (Ref. 4, p. 4; 8. p. 5; 10, p. 5; 20, p. 2; 23 p. 10; 60, p. 2; 110, p p. 1 , 2 ; 123, pp. 1, 2; 139, p. 1 ). The facility used PCE, generated PCE waste, and had several PCE spills on the property (Ref. 10, pp. 10 , 11; 12, p. 1). In May 1989, elevated levels of VOCs were detected in two soil borings collected near an underground tank as part of a subsurface investigation (Ref. 6, p. 5; 11, pp. 2, 3, 4, 6). In 1989, a soil gas survey was conducted on the property as a means to survey the extent of subsurface contamination a t the facility (Ref. 10, p. 1). The investigation concluded that it was possible that the plume has migrated off the property to the south /southeast (Ref. 10, pp. 1, 9). Four (4) monitoring wells were subsequently installed on the property, which detected elevated levels of TCE (1,330 μg/l), vinyl chloride (21,900 μg/l), and PCE (6,500 μg/l) in the ground water (Ref. 5, pp. 12, 20, 21, 23

- 26, 31 , 36 ). Another Phase II Investigation/Remediation report was completed in January of 1996 to evalua te the nature of the source area and how best to remediate VOCs (Ref. 8, p p . 2, 5; 123, pp. 1, 2; 139, p. 1 ). E levated levels of vinyl chloride, TCE, PCE,17 and other breakdown products were detected in the water from most of the wells (Ref. 8, p p

. 19, 20 ; 19, pp. 2, 3; 123, pp. 1, 2; 139, p. 1 ). Water samples were also collected in the drycleaner’s wash

- water containment pits to pinpoint any sources of contamination . A nalysis revealed elevated levels of PCE in the pits (Ref. 16, pp. 7, 12, 25). Elevated levels of TCE and PCE were detected in soils and elevated levels of PCE w ere detected in ground water as part of a Stage I investigation, which comprised twenty

- six (26) direct push borings and nineteen (19) discrete ground water samples (Ref. 20, pp. 2, 3 ; 1 23, pp. 1, 2; ). The target potentially susceptible to the ground water contamination at Tuchman Cleaners was identified as the Ind ia na po lis Fall Cr eek W ell Fiel d
, sp eci f ical ly mun ici p al wel ls FC2, FC5, FC7, FC8, FC 11 , FC17 , FC18, FC19 (Ref. 26 , p. 15 ; 123, pp. 1, 2 ).

A f ea s ib il it y study to remed ia te the contaminant plum es undern eaththe Tuchm an C le aners f acili ty w as c ondu cted and r ec o mm end ed so il venting and pu mp and tr ea tment of g ro un d w ater (Ref. 74 , p. 1). A C orr ecti ve A cti on P lan to remed iate the contamin ati on at the Tuchman f acili ty w as propo s ed to IDEM on July 2
, 199 0 (Ref. 69 , pp. 1– 30) . A

so il va po r extr act ion s ys tem and a pu mp and tr eat s ys tem were i ns ta lled in Oct ob er 1990 ( Ref. 15
, pp . 1
, 3). By 2003
, twenty-two (22 ) mon it or ing w ells h ad b een ins ta l led on the prop er ty

(Ref

. 23
, pp. 68, 69, 85- 96 ; 123, pp. 1, 2 ). M on it or ing of the we lls on the property rev ealed con ti nuous d etecti ons of PC E (Ref. 21
, pp . 1-3, 6-7; 24
, pp . 1-3, 6-9; 28 , pp. 1- 3, 7; 30, pp. 1-4, 6
, 7, 9 , 10, 11,13, 15 ; 31
, pp . 1-3, 6, 8; 32 , pp. 1- 3, 5, 7 ; 33, pp. 1- 4, 6, 8 ; 34 , pp. 1-8; 35, pp. 1-3, 6-7; 36, pp . 1-3, 6; 37, pp. 1-4, 5- 7; 38
, pp . 1-4, 8; 39
, pp . 1-8; 40 , pp. 1-3, 6-7; 41 , p p. 1 -3, 6-8; 67 , pp. 6- 10
, 24

- 25 ; 73
, pp . 9- 15 ; 76
, pp . 1-7). A Remed ial I nv es ti ga ti on Re por t ind icated th at there h as b een mig r a ti on of PCE

a nd its a ss o ci a ted degrad ati on prod u cts from the Tuchm an P rop er ty (Ref. 27 , p

. 1; 19 , pp. 1- 5) . As a re su lt, IDEM requir ed th at a Remed ial I nv estig ati o n W or k P lan a ddr e ss ing the migr ati on from the property be su bm itted (Ref. 27 , p. 1) . Contamin ated soils were al so d etected in th e u pp er few f eet un d er the western two-thi rd s of the p la nt bu ilding and in

the outside was te st or age ar ea (Ref. 23 , p

. 59 ; 123, pp. 1, 2 ).

In Se pt e mb er 2004 , IDEM i ssu ed a re qu est fo r i nform ation no tice to Tu c hma n C le an ers to iden ti fy th e acti v iti es , m ate rials, and par ti es th at ma y hav e c on tri bu ted to the c on t amin ati on on the property (R ef. 72
, pp . 1, 2)

. On Jul y 7
, 2008 , the parent c omp any of Tu c hm an C le an ers d ecla r ed Ch ap ter 1 1 ba nkrup tcy (Ref

. 107 , p. 5).

In 1996 , a Ph ase I Env i ronm en tal Ass e ssm en t was conducted at a v aca nt lot lo cated nor the as t of th e Tu c hma n C lea ne rs ( Ref. 45, p. 1; 46, pp. 5, 7, 10, 65 ). G roun d w at er mon it or ing w el ls wer e i ns ta lled on the prop er ty, and ele v ated le ve ls of PC E were d etected in some of these w el ls (Ref. 45 , p. 3; 46 , p. 4)

.

Va nt ag e Po int C le an ers op er ated a dr y clea n er fro m Dec emb er 198 6 t hroug h Fe bru ary 1997
, us ing a nd d i spos ing of PC E was te (Ref

. 12 , p. 1; 42
, pp . 1- 68 ; 43
, pp . 1- 21 ; 44
, pp . 1- 47) . In 2007 , a Ph ase I I Site Inv es ti ga ti o n wa s
c ondu cted on th e prop er ty to d ete rmin e if th ere was an y c on tri bu ti on to PC E groun d w at er imp acts to t he v aca n t l ot lo cated b et ween V an ta ge Po int C le an ers an d Tu c hma n Cl ea ners (Ref

. 51
, pp

. 2, 3, 15 ). Th e i nves t ig ati on d ete rm in ed th at el ev ated le vels of PC E wer e d etected on the Va nt ag e Po int C le an ers prop erty (Ref. 51, pp. 10, 11 ).

F ro m Oc t ob er 1 9 t hroug h 29
, 2009 , IDEM Site Investigation s ta ff c ondu ct ed a Site Insp ecti on (SI) (R ef. 78
, p. 18)

. A to tal of nine (9) subsurfa ce so ils and twenty

- eight ( 28 ) groun d w ater samp les wer e c o llected fo r the SI (R ef. 78
, pp

. 18
, 22) . E le v ated le v els of PC E and TC E were d etected in so il and groun d w ater samp les co lle c ted on the Tu c hm an C lea ners and the Thom as C ate rers prop er ties (R ef. 78
, pp

. 56
, 57, 58
, 62
, 116

- 121
, 124

- 127
, 162

- 167; 101, p. 1) . E le v ated le v els of vi ny l chl or ide (a bov e the MCL ) w ere d etected in m un ici p al w ell FC2 (Ref

. 78, p

. 59)

.

On J ul y 9
, 2010 , IDEM ’s State C lea nu p Section i ssu ed a S p ecial No tice of L ia bility le tter to t he regis te r ed a gent of Mayco Holdi ng s LLC , V an ta ge Po int C le an e rs , s tatin g t ha t a r elea se of h aza rdou s subs t an ces wa s do c um en ted fro m th e Va nt ag e Po int C le an ers propert y and t ha t the f acili ty w as respons ib le to pe rfor m a re spons e acti on (Ref

. 52 , pp. 1- 4)

. On Ja nu ary 28
, 2011
, a consu lt an t fo r Mayco Hol dings
, LLC , be ga n inves t ig at ing the va po r int rus ion p at hwa y at a n ea rb y chur ch at th e re qu est of IDEM’s S tate C le anu p Section (Ref

. 53
, pp . 1
, 2) . On Fe bru ary 16
, 2012 , IDEM i ssu ed a Commiss i on ers O rd er to Va n ta ge Po int C lea ne rs ’ respons ib le par tie s to c ondu ct n ec ess ary respons e ac ti on s in ord er to a ddr ess the groun d w ater c on t amin ati on (Ref

. 54
, pp . 1 , 3 ).

T ho m as C ate rers of D is t in cti on , lo cated nor t hw est of Tu c hm an C le an e rs , hous ed a form er ru g cle an er op er ati on pr ior to 197 0 (R ef. 63 , p. 1; 64, p. 7; 139, p. 1 ). A Ph ase 2 wa s c ondu cted on the prop er tyin Ja nuar y 201 0 (R ef. 64
, pp

. 2, 5 ). An a lys es ind icated ele vat ed le v els of PC E and a sso ciat ed breakdown produ cts in th e groun d w ater fro m all

mon it orin g we lls and so il samp les (R ef. 64
, pp

. 23
, 24
, 26

- 30 ; 19, pp. 1, 2 ).

Pur tee P lati ng , 230 0 East 44 th St r eet, Ind ia na po li s, Ind ia n a, hist or ical ly op er ated as bo th m etal p lat in g an d aut omo t iv e rep ai r/rest or ati on busin e sse s (Ref

. 82 , p. 6) . El ev ated le ve ls of PCE
, TCE, VC , and vari ou s m et a ls were d etected in t he surf ace so ils (Ref

. 82 , p

. 22
, 36 -39). E le v ated le v els of PC E and TC E were al so d etect ed in the18 groun d w ate r in an up

- gradient well (MW2), indicating th at groun d wa ter underlying the property wa s b ei ng imp acted by up

- gr ad ie nt sour ces (Ref

. 82 , p. 9)

.

On N ovemb er 1 5 a nd 16
, 2011 , IDEM SI s ta ff c ondu cted an Exp a nd ed Site Insp ecti on (E SI) (R ef. 79
, pp

. 5
, 11) . A to tal of ten (10 ) subsurf ace so ils an d ten (10 ) groun d wa ter samp les were co llected fo r the E SI (R ef. 79 , pp

. 11 , 15 ). E le v ated le v els of PC E were d etected in so il and groun d w ater samp les th at were co llected on the prop er ty o f t h e former S& K Dry C lea n er which had been located at 2321 E. 38 th Street (R ef. 79, p. 39, 40, 41 ; 109
, p. 1; 101, p. 1)

. E le v ated le v els of viny l ch l or ide a bov e MC L at 1 2 μg /l (ground water sample E2 SG 1DL) were d etected in municipal well F C2 ( Ref. 2, p. 12; 79
, pp

. 43
, 44, 205 ; 101, p.1; 112 , p

. 10)

.
2. 2 SO URCE CHA RAC TERIZA TI ON

M u nicipal wells FC 17 , FC 11 , FC7, and FC2, lie al ong a por ti on of Fall Cre ek in Ind ia na po li s, India na (Ref. Figure s 1- 2 and 1-3 of th is HRS documen tati on record ; 122, p. 1; 130, p. 1). The source(s) of the Ke ys tone C orr i do r Gro un d W ater Contamin ati on ground water plume are undetermined because too many fac iliti es are lo cated n ea rby the

mun ici p al w ells to attribute the ground water plume to any one source or sources ( Ref

. 129, pp

. 1-3 ; Description of Other Possible Sources Secti on and Figure 1 -4 of th is HRS do cumen tati on r ec ord ). Due to the c omplex g eology and high number of known and potential sources of chlorinated v olatile organic compounds in the project area and because the contamination is commingled, it is not feasible to directly link any source to the contaminant s encountered in the plume (Ref. 7, p p . 3, 5 ; 85, p. 36; 101, p. 1; Figure s 1- 3 and 1- 4 of this HRS documentation record ; Description of O ther Possible Sources Section and Section 3.0.1 of this HRS documentation record; 122, p. 1; 130, p. 1)

. O ther potential sources known to have TCE, PCE, VC, etc.
, can be found in Description of Other Possible Sources Section of this HRS documentation record.

2.2. 1 SO URCE IDEN TI FICA TI ON

Sour ce Number: 1

HRS Sour ce Type: Ot h er (g ro un d w ater plume with n o i dentif ia b le sing le s our ce) The source is considered a ground water plume with commingled contamination due to the complex geology and high number of known and potential sources of chlorinated volatile organic compounds in the project area

. I t is not fe asible to directly link any one source to the contaminant s encountered in the plume ( Ref. 17, p. 8; 16, p. 12; 78, pp. 32, 33; 79, pp. 32, 33; 82 , p. 36; 101, p. 1 ; 116, pp. 4 8- 57 ; 129, pp. 2, 3 ; Figure 1

- 4 of this HRS documentation record ) . The ground wat er samples used to delineate the outline of the plume were collected from the combined aquifer covering an approximately 101.2 acre area (Ref. 140, p. 2; 122, p. 1; 130, p. 1; Figure 1

- 3 of this HRS documentation record ; Section s 3.0.1 and 3.1.1 of this HRS documentation record ). The area of the ground water plume is based on available samples that meet the criteria for an observed release and the target distance limit is measured from the center of the area of observed ground water contamination ( Ref. 1, pp. 45, 46; Section 3.1.1 of this HRS d ocumentation r ecord).

De scrip ti on and Lo cati on of the Sour ce: The Ke ys tone C orr i do r Ground W ater Contamin ati on co ns is ts of a g rou nd w ater plume along Fall Creek in Indianapolis, Indiana at the intersection of N. Keystone Avenue and E. Fall Creek Parkway N. Drive ( ae r ial

re pr esen tati on o f t he g rou nd w ater plume can be s een in Fi gu re 1-3 of th is HRS documen tati on r ec ord ; 122, p. 1; 130, p. 1; 136, p. 2 ). Wh ile sampli ng wa s a b le to i den ti fy some contamin ated so il s, there are many b us ine ss es tha t may al so be po ss ib le sour ces contribu ti ng to the g rou nd w at er plume (Ref

. 116, pp. 4 48

- 57; 1 29, pp. 1

- 3) . P er the HR S, the plume itself wil l be co ns ider ed the sour ce (Ref. 1 , Section 1.1 , p. 61) . The extent of th is plume h as not b een comp le t ely d el in eated at th is ti me but has been char ac ter ized by d ata from monit or ing w ells , municipal wells and samples ob tai n ed us ing the dir ec t-push bor ing dev ice ( See Secti on 3. 1.1 of th is HRS documen tati on r ec ord ).

Level of Effort by IDEM : IDEM staff have been attempting to address soil and ground water contamination along Keystone Avenue since 1989 when elevated levels of VOCs were detected in two soil borings collected near an underground tank on the former Tuchman Cleaners property (Ref. 11, pp. 2, 3, 4, 6 ). The contamination lies within the Well Head Protection Area for the Fall Creek Well Field ( Ref. 122, p. 1; 130, p. 1; Figure 1-4 of this HRS documentation record ).19 In 2009
, the Keystone Corridor and Tuchm an C le aners were refe rr ed to t he IDEM Site I nv estig ati on Secti on by th e IDEM State C le a nu p P ro gram (Ref. 107 , pp. 1-5; 108, p .1 ; Site Summary Section and Description of Other Possible Sources Section of this HRS documentation record, for summaries of investigations related to these facilities.) On J un e 19 , 20 09 , IDEM Site I nv estig ati on s ta ff vis ited the of f ice o f Ve o lia W ate r, f or merly kno wn as Indiana po lis W ater (I WC), to ob tain any information rega rd ing the Fa ll Creek w ell f ield (Ref. 78 , p

. 1 7) . S ite Investigation s ta ff condu cted a r ec o nn ai ssan ce vis it at the Fall Cr eek w

ell f ield ar ea on Se ptemb er 13 , 2 009
, to d ete rmine str ate gic sampling lo cati ons for a s ite i nspection (Ref. 78 , p

. 1 7) . On Oc t ob er 19
, 20
, 21
, 22, and 29
, 2009, Site Investigation staff condu cted an SI of the Keyst on e C orr i do r (Ref. 78 , pp. 1, 11 , 18- 23)

. Elevated levels of PCE were d etected in the g rou nd w ater and so il samp les co llected from the Tuchm an C le aners and Thom as C ate rers prop er ties (Ref. 78
, pp. 46, 48
, 51, 1 17 , 121, 16 5, 167
, 177, 1 79
, 211 , 220, 2 21
, 228
, 22 9, 232- 234 ; 112, pp . 2-4, 6-8, 10 , 11 ).

On Novemb er 1 5 a nd 16
, 20 11, IDEM Site Investigation s ta ff condu cted an ESI for the Keystone Corridor (Ref. 79
, pp. 5, 11 ). A t o tal of ten (10 ) su b su rf ace soi ls and ten (10 ) g ro un d w ater samp les were co llected for the E SI (Ref. 79
, pp

. 11 , 15 ). E le v ated le v els of PCE were d etected in so il and g ro un d w ater samp les co llected o n t he prop er ty of a form er dr y c lea n er lo cated on East 38 th St r eet (Ref. 79
, pp

. 12
, 13, 17 ; 112, pp. 1- 4, 6-8, 10 , 11). E le v ated le vels of vinyl chl or ide a bo ve the MCL (1 2 μg/l in E2 SG 1 ) in drinking water w ere al so d etected in well FC2 (Ref. 2, p. 12; 79
, pp. 43, 44 , 149 ; 11 2, p. 10)

.

A d ditionally, the 2007 Wellhead Protection Plan (Ref

. 116) identified approximately 129 properties as possible sources of solvents in the 5

- year time of travel for the Fall Creek Wellfield ( Ref. 116, pp. 4 8- 57; 129, p

. 1). Of these, 40 properties were identified as known sources of chlorinated volatile organic compounds, and/or those properties where dry cleaning, commercial laundry, printing, metals manufacturing, or chemical distributors are/were located (Ref

. 129, pp

. 1- 3).

2.2.2 HAZARDOUS SUBSTANCES ASSOCIATED WITH THE SOURCE

Ref er to Secti on 3.1. 1 of this HRS documentation record for a li st of g rou nd wa ter samples th at were fo un d to be contamin at ed. The hazardous substances include cis

- 1,2

- DCE
, trans

- 1,2 -D CE , 1,1,1

- TCA , PCE, TCE, and vinyl chloride.

2.2. 3 HAZ ARD OUS SU BST AN CES AV AILABLE TO A PATHWAY

Containment De s c r i p t i on C o n ta i n m e nt Fact or Val ue R e f e r e n c es

Gas r e l e a s e to a i r : N o t Sc or ed
P a r tic u late r el e a s e to ai r : N o t Sc or ed
R elea s e to g rou n d w ate r : B eca us e t h e r e is an ob s e r v ed r elea s e o f a h aza rdo us substan ce to g roun d w ater a c on ta inment v al ue of 1 0 h as b een a ss ign ed ( See Secti on 3. 1. 1 of th is HR S do cumen tati on r ec or d sh owing ele v ated lev els of vo latile organ ic c om pou nds th at were d etected in g ro un d w ater in the Keystone Ground Water Contamination
, an ob serv ed r elea se o f h aza rdo us substan ces by chem ical anal ys is). 10 R e f

. 1
, T a b le 3

- 2
, p

. 70

Containment De s c r i p t i on C o n ta i n m e nt Fact or Val ue R e f e r e n c es

R elea s e v ia o v e r l a n d m i g r ati o n a n d / o r f l ood : N o t s c o r ed

No te s: The Con ta inment Fac tor Val ue for the gro un d w ater migr ati on p at hway was evalua ted for “A ll Sour ce s” fo r eviden ce of h aza rdo us substan ce migration from sour ce ar ea (i. e. , sour ce ar ea in cl ud es sour ce and any a ss o ciated

con tai nment structures). The a pp lica b le con tai nment f act or v al ue w as d ete rmin ed bas ed o n e xisting analyt ical eviden ce of h aza rdo us substan ce s in g ro un d w ater samp les (Ref. Secti o n 3.1. 1 of th is HR S do cumen tati on r ec ord)

. Bas ed on an ob serv ed r elea se of a ha za rdo us su bstan ce to g rou nd w ater a c o n ta inment valu e of 1 0 h as b een assign ed (Ref. 1, Tab le 3-2, p

. 70; Secti on 3. 1. 1 of th is HRS do cumen ta tion r ec ord)

.20 2.4. 2 HAZARDO US WASTE QU AN TITY

2.4.2

. 1. 1 Ha za rd o us Constit uent Quantity (T ier A)

De scrip ti on The information ava ila b le is no t su ff ic ie nt to ev al u ate T ier A sour ce h aza rdo us was te quan ti ty; a suffic ie n t numb er of
samp les were not co llected th at wou ld s tat is tica ll y re pr esent the ra ng e of contaminant con ce ntr ati on s t h rou gh out the

sour ce, theref or e, h aza rdo us co ns ti tuent quan ti ty is not sc or ed ( NS ). As a re su lt, the evaluation of h aza rdo us was te quan ti ty pro cee ds to t he ev al ua ti on of T ier B, h aza rdo us wastestream quantity (Ref. 1 , Secti on 2.4.2.1. 1, pp. 64, 65). Haza rdo us C on s ti tuent Quant it y Assi gn ed Va lu e: NS

2 .4 .2

. 1. 2 Ha za rd o us Wastest re am Quantity (T ier B)

De scrip ti on The information ava ila b le is no t su ff ic ie nt to ev al u ate T ier B sour ce h aza rdo us was te stream quan ti ty. There are insufficient historical and current data (manifests, PRP records, State records, permits, etc.) available to adequately calculate the total mass of all hazardous wastestreams and CERCLA pollutants and contaminants in the source. As a

resu lt, the ev al u ati on of Haza rdo us Was te Quan ti ty pro cee ds to t he evalu ati on of T ier C, Vol um e (Ref. 1 , Secti on 2.4.2.1 .2, p

. 65). Haza rdo us Was te stream Quan ti ty A ss ign ed Val u e: NS

2.4.2

. 1. 3 Volume (T ier C)

De scrip ti on H or iz on tal and ver tical extent of the plume ca nn ot be d ete rmin ed bas ed on av aila b le samp li ng d ata; a su ffic ie n t numb er of samp les are not ava ila b le to s tati s tica ll y re pr esent the range of contaminant concentr ati ons th rou gh ou t t he

sour ce. Theref or e, the sour ce volume is u nk nown, bu t gr eater th an 0.

Volume Assign ed Val ue: unknown, but >0

2.4.2

. 1. 4 Ar ea (T ier D)

De scrip ti on Ar ea, T ier D, is not sc or ed (N S) for sour ce typ e “other” (Ref. 1
, Tab le 2-5, p. 65 ).
Ar ea Assi gn ed Va lu e: 0

2.4.2

. 1. 5 So urce Haza rd o us Waste Quantity Va lue

The source hazardous waste quantity value for Source 1 is unknown, but > 0 (Ref. 1, Section 2.4.2.1.5, p. 65 ).

Volume of g rou nd w ater pl ume : unknown, but >0 Sour ce Haza rdo us Was te Quan ti ty Va lu e: unknown, but >0

SU MM ARY OF SO URCE DE SC RIPTIO NS

Source

No. Source Hazardous

Waste Quantity

Value Source Hazardous Constituent

Quantity Complete?

(Y/N) Containment Factor Value by Pathway Ground Water (GW) (Ref. 1, Table 3

- 2) Surface Water (SW) Air
Overload/flood (Ref. 1, Table 4- 2) GW to SW (Ref. 1, Table 3

- 2) Gas (Ref. 1, Table

6- 3) Particulate (Ref 1, Table 6

- 8)

1 Unknown, but >0 N 10 NS NS NS NS

NS Not Scored21 De s crip tion of Ot her Po ss ib le So urce s: There are sever al oth er po ss ib le sour ces of chl or in ated solvents in the ar ea. The names and descriptions of the po ssib le

sour ces are as fo ll ows:

T uc hman Cle a ners The former Tuchman C le aners was lo cated at 440 1 Keystone Avenu e, Ind ia na po li s, Ind ia na (Ref. 4
, p

. 4; 8, p

. 5; 20, p. 2; 23, p. 10 ; 10 , p. 5; 110
, p. 1 ; 123, pp. 1, 2; 139, p. 1; Figure 1

- 4 of this HRS documentation record ). The f acili ty

us ed PCE, gener ated PCE was te, and h ad sever al PCE sp ills on-s ite (Ref. 10
, pp

. 10
, 11 ; 12, p. 1) . In M ay 1989, ele v ated le vels of VOCs were d etected in two (2 ) so il bor ings th at were co llected n ear an underg rou nd ta nk as part of a

su

bsurfa ce investig ati on (Ref. 11
, pp . 2-4, 6 ). In 1 989 , a so il g as su rvey was condu cted on the prop er ty to d ete rmi ne the extent of subsurf ace c on tamination at the f acili ty (Ref. 10 , p

. 1) . The i nv estig ati on con cl ud ed th at it wa s po ss ib le th at the maj or ity of the plume had migr ated w ith the g ro un d w ater to t he south/south ea st and had trav eled off of the property (Ref. 10
, pp . 1, 9) . E xp l or at or y bor ings perform ed in 198 9 as part of a Phase I I I nv es ti ga ti on ind icated th at the subsurf ace soils and g ro un d w ater on the property were contamin ated with vo lat i le or gan ic co mpo un ds (Ref. 5
, pp

. 1
, 5
, 12 , 13, 1 4) . Four (4 ) monit or ing we lls were subsequently ins ta lle d on the prop erty, which d etected ele v ated le v els

o f TCE (1 ,33 0 μg /l ), vinyl chl or ide (2 1 ,9 00 μg /l ), and PCE (6, 50 0 μg /l) in the g rou nd w ater (Ref. 5
, pp . 12, 20, 21, 23- 26 , 3 1) . Anoth er Phase II Investigation/Remediation re por t was comp leted in January of 1 99 6 to ev al u ate the natur e of the sour ce ar ea and to e v al u ate how best to remed iate the VO Cs (Ref. 8
, pp . 2, 5 ; 123, pp. 1, 2; 139, p. 1 ). E le v ated lev els of vinyl chl or id e, TCE, PCE, and oth er br ea kdown prod u cts were d etected in the w ater (Ref. 8
, p

. 20 ; 19, pp. 1, 2; 123, pp. 1, 2; 139, p. 1 ). W at er samp les were al so co lle c ted in the wash-w ater con ta inment pi ts of the dr yc lea ner’ s op er ati ons in 1999 to pin po int any sour ces of c on tamin ati on, and anal ys is rev ealed ele v at ed le v els of PCE in the p its (Ref. 16
, pp . 7
, 12, 2 5) . An a dd iti on al St age I i nvestig ati on in July and A ug us t of 2000 , wh ichco llected dir ect p us h bor ings and discr ete g ro un d w ater samp le s, al so d etected el ev ated le vels of PCE in so ils and g ro un d w ater (Ref. 20
, pp. 2, 8- 14, 16

- 19)

. Approximately 217.4 kilograms of VOCs have been removed from the shallow ground water zone via 82 months of
p um ping (no pumping in May 1996, January 1998, and February 1998) (Ref. 22. p. 7). According to another ground water monitoring report dated April 11, 2000, approximately 162 kg of VOCs have been removed from the aquifer (Ref. 16, pp. 1, 12). The report also stated that the remediation system was effective at blocking impacted ground water from flowing off of the property

- site, but did not mention if any contaminated ground water left the facility prior to the inst allation of the remedi ation system (Ref. 16, p. 12). VOC concentrations decreased during the remediation activities, but data from monitoring well MW6 indicated that PCE had migrated onto the property ( Ref. 17, pp. 9, 26; 18, p. 2). Information contained i n a Remed ial I nv estigation Re por t pr epared for National Drycleaners, INC. indicated increase d concentrations of PCE at monitoring well MW

- 6 which is located upgradient of the property (Ref. 23 , p. 9 ; 123, pp. 1, 2). It was noted that this monitoring well was located immediately downgradient of a neighboring laundry facility on Allisonville Road that included dry cleaning operations that may have resulted in releases to the subsurface (Ref. 23, p. 9 ; 123, pp. 1, 2 ). In general
, ground w ater flow w as do cument ed in a south wes te rly dir ecti on (Ref. 13 , p

. 21 ; 123, pp. 1, 2 ). Localized variations in ground water flow direction have been documented (Ref. 24 , p

. 11; 28 , p. 9, 10 ; 30 , p. 18, 19, 20 ; 31, p. 10, 11 , 12 ; 32, p

. 9, 10. 11 ; 33, pp. 10 , 1 1, 12 ; 34, p. 9, 10, 11 ; 35, p

. 8, 9, 10 ; 36, p . 8, 9, 10; 37 , p . 9, 10 ; 38 , p

. 1 0, 11, 12; 39 , p. 9, 10, 11 ; 40, p. 9, 10, 11 ; 41, p . 9, 10, 11 ). Mo n it or ing of the w el ls on the property from 2002 and 200 3 and 2005 to 20 08 rev ealed con ti nuous d etecti ons of PCE, alt h oug h VO C c on ce ntr ati ons fluctu ated in

som e of the w e lls (Ref. 21
, pp . 1-3, 5- 11 ; 22, pp. 4, 9- 15 ; 24 , pp. 1-3, 5-9; 28
, pp . 1-7; 30, pp. 1-4, 6
, 7
, 9- 16 ; 31
, pp

. 1-3, 5-9; 32
, pp . 1-8; 33 , pp. 1-9; 34, pp. 1-3, 5-8; 35
, pp . 1-3, 5-7; 36, pp. 1-3, 5, 6; 37
, pp . 1-3, 5, 6; 38 , pp. 1-4, 6-8; 39 , pp. 1-7; 40, pp . 1-3, 5-7; 41, pp. 1-3, 5-7 ; 59, pp. 5, 6; 18, pp. 5, 6 ). The RI Re por t ind icated th at ther e h as b een migr ati on of PCE and its a ss o ciated degrad ati on prod u cts off of the Tuchm an P rop er ty (Ref. 27 , p

. 1; 19
, pp. 1- 5)

.

In 2009
, IDEM condu cted a Site Inspection (Ref. 78
, pp . 1
, 11, 18- 23) . Lev els of PCE as high as 18 μg /kg and TCE

as high as 1.4 (J) μg /kg were also d etected in many sub su rf ace soils on the Tuchman Cleaners (Re f. 78
, pp. 48 , 51
, 162, 163 ; 99
, pp . 5, 8 , 9
, 36, 39, 42, 45 )

.

Van tage Po int Cle a ners Former Vantage Point Cleaners operated from approximately 1979 until 1997 (Ref. 54. p . 6). In 1996 , Ald i, Inc. contr acted an envi ron men tal consu lt ant t o c ondu ct a Phase I E nv i ronm en tal Asse ss men t at a v aca nt lot (Ref . 45, pp. 1- 4) lo cat ed at 4405 A lli s on vil le Road, Ind ia na po li s, Ind ia na , northeast of Tuchman Cleaners and w as the form er lo cati on of Van ta ge Point C le aners (Ref. 61
, p. 2; Figure 1

- 4 of this HRS documentation record ). E le v ated le v els o f PCE were d etected in the g rou nd wa ter from two of thr ee (3 ) mon it or ing w el ls that were ins talled on the prop er ty (Ref. 45 , pp

. 3 , 4 )

. The own er of the v ac ant lo t, T&N P ar tner sh ip, f iled a l awsu it against Tuchm an C le aners and22 Va ntage Point C le aners (a dry clea ner) (Ref. 48 , pp. 1- 12 ; 55
, pp . 1- 15 ; 56, pp. 1- 16 ; 57 , pp. 1- 18) . A cc ord ing to t he Su mm ary Ju dgm en t, it was determined that the contamination found on the vacant lot did migrate from both Vantage Point Cleaners and Tuchman Cleaners (Ref. 58, pp. 5, 10). IDEM sent an Information Request Notice to the owners of the Vantage Point C lea ners prop er ty in Ja nu ary 200 4 (Ref. 49 , pp. 1- 3)

. Va n ta ge Point C lea ners op er ated a s a dr y clea n er, us ing and dis po sing of PCE was te (Ref. 12 , p

. 1; 42
, pp . 1- 68 ; 43
, pp . 1- 21 ; 44
, pp . 1- 47)

.

A Phase I I E n v i ron men tal Inv es ti ga ti on w as condu cted on the Va ntage Point prop er ty and four (4) mon it or ing we lls were i ns tall ed (Ref. 50 , pp. 2, 6 ). Na phtha le ne w as the only com pou nd d etected in the g rou n d w ater at the Va n ta ge Point Cleaners (Ref. 50 , p. 9) . In 2 007
, a Phase I I Site I nv es ti ga ti on was condu cted by St. John

- Mittelhauser & Associates, Inc. to d ete rmine if there w as any contribu ti on to PCE g rou n d w ater imp acts to t he v ac ant lot lo cated b et ween Van ta ge Point C le aners and Tuchman Cleaners (Ref. 51
, pp . 1 , 3 ). The i nv estigati on d e te r min ed th at ele va ted le v els of PCE were d etected on the Va ntage Point C le aners prop erty (Ref. 51, pp. 10, 11 ). Howev er the

re por t ind icated th at a r elati on betw een the PC E at Va n ta ge Point C lea ners and the v ac ant lot cou ld no t be made (Ref. 51 , p

. 1 2)

.

On July 9
, 2010
, IDEM State C lea nup Section issu ed a S p ecial No tice of L ia bility le tter to t he regis te r ed a gent of May co Holdin gs , LL C, form er Van ta ge Point C le aners (Ref. 52
, pp . 1- 4) . The Sp ecial No tice of L ia bilit y s tated th at

a r elea se of h aza rdo us substan ces w as do cument ed f ro m the form er Va n ta ge Point C le aners prop er ty an d t h at the f aci lity was res po nsib le to perf or m a res po ns e acti on th at w as deem ed n ece ssary by IDEM (Ref. 52 , p

. 1 ). On Ja nu ary 28
, 20 11, a c o nsu lta nt for May co Holdings, LL C, prepared a work plan to i nv estig ate the va po r intr us ion
p at hway at a n ea r b y c hu rch at the request of IDEM State C le a nu p Section (Ref. 53 , pp. 1, 2)

. On Fe br uary 16
, 2012
, IDEM i ssu ed a Co mm issioners O rd er to Va n ta ge Point C le aners’ res po ns ible par ties to condu ct n ece ssary res po ns e acti on s in ord er to a ddr ess the g rou nd w ater contamina ti on (Ref. 54
, pp . 1-27). According to an investigation on an adjacent property located at 4405 Keystone, Vantage Point Cleaners was listed as a potential source of contamination (Ref. 6, pp. 1, 5).

Thomas Caterers of Distinction The pr op er ty lo cated n or thwest of Tuchman Cleaners ho us es a form er rug cle an er and dry clea n er pr ior to 1 97 0 an d

cu rr en tl y op er ates as a cate ring f aci lity (Ref. 63 , p

. 1 ; 139, p. 1 ; Figure 1

- 4 of this HRS documentation record ). The f acili ty is lo cated at 444 0 Nor th Ke ys tone Ave nu e, Ind ia na po li s (Ref. 64, p. 1). In January 2010 , Thom as C ate rers of Distin ct ion contr acted an envi ron ment al co ns u lta nt to c ondu ct a Phase I I E nv i ron men tal In vestig ati on on th eir
prop er ty (Ref. 64 , pp. 1 , 5 ; 66 , p. 1) . Analys is of the g rou nd w ater c o llected from all mon it or ing w el ls ind icated ele v ated le vels of PCE and TCE in the w e ll s; all soil samples contained PCE (Ref. 65 , pp. 1, 2; 66 , p

. 1
, 2; 78, pp. 51, 82, 83, 1 48 , 149, 164- 167
, 208 , 209 , 234; 139, p. 1 ). So il samp les th at were ob tai n ed on the property during the Ke ys tone C orr idor G ro un d W ater SI reve aled ele v ated le v els of PCE (0 .04 6 mg/kg PCE f or samp le E2 R21 and 0 .16 0
mg /kg of PCE for samp le E2 R23) (Ref. 78 , pp

. 48, 51, 164- 167 , 232, 233 ). Soil samples obtained on the Thom as Ca te rers prop erty were also found to contain elevated levels of chlorinated solvents (PCE as high as 160 μg /kg in E2 R23 and TCE as high 8. 3 μg/kg) (Re f. 78
, pp. 48, 51, 100

- 102, 1 64

- 167 , 232- 234 ; 99
, pp . 5, 8- 13 , 17, 19, 57

- 59
, 63- 65)

.

P ur t ee Pl at ing The pr op er ty lo cated n or th west of the ground water plume is lo cated at 230 0- 2306 East 44 th St r eet, Ind ia na po li s, Ind ia na (Ref. 84
, p

. 4 ; Figure 1

- 4 of this HRS documentation record ). The property h as hist or ical ly op er ated as bo th

m etal p lat ing and automotive rep ai r/rest or ati on b us ine ss es (Ref. 84
, p

. 5)

. On Ma r ch 24 , 20 06 , IDEM s ta ff conduc ted

an

insp ec tion at the f acili ty in res po ns e t o a c omp lai nt alle ging th at nine (9 ) dru ms of n ic k el p lat ing wastes were aban do n ed at the prop er ty (Ref. 14 , p

. 3). The i ns p ecti on rev ealed th at t he dru ms were pr esent and the own er was requir ed to di sp os e o f them (Ref. 14
, pp . 3
, 4). A ser ies of su bsurf ace i nv estig ati ons were condu cted on the property sh owing el ev ated le ve ls of PCE, ci s- 1, 2 DCE , a nd vari ou s m eta ls in the surf ace so ils (Ref. 83 , p. 6, 7; 84
, pp . 7- 15
, 28 ). The concentrations of PCE and TC E d etected in the g rou nd wa ter ind icat e th at the g rou nd wa ter on the property was b ei ng impac ted by up-gradie nt s our ces because the concentrations were higher in wells upgradient of the property and downgradient of a known source of PCE and TCE (Tuchman Cleaners) (Ref. 83, p p . 7 , 11 ; 84
, pp

. 13

- 15 , 27 ).

S&K Laundry The pr op er ty is lo cated at 23 21 East 38 th Str eet (Ref. 109
, p. 1; Figure 1

- 4 of this HRS documentation record ). The
pr operty has formerly h ou s ed sever al dr y clea ni ng /laun dr om at f

ac i liti e s (Ref. 109
, p. 1). F ro m 1962

- 197 4, the
pr operty w as o cc up ied by various nam es th at includ ed : B &B N or ge Coin, N or ge C lea n and La un dry, and Sm it hs N or ge (Ref. 109
, p. 1). F ro m 1978 th rou gh 197 9, the f acil it y was op er ated und er the name of R ain Ba rr el Laundry23 (Ref. 109 , p

. 1) . F ro m 1981 to 19 99 , the fac ili ty op er ated un d er sever al var iati ons of the S&K nam e; S&K La un dr om at and Dry C le aning, S& K La un dr om at, and S&K C le aning & Laun dr om at (Ref. 10 9, p. 1) . Sp eci f ic d etails rega rd ing these clea ni ng op er ati ons are un kn own.

On Novemb er 1 5 a nd 16
, 20 11, IDEM Site Investigation staff condu cted an ESI (Ref. 79
, pp . 5, 11 , 12 ). A to tal of ten (10 ) su b su rf ace soils an d ten (10 ) g ro un d wa ter samples were co llected for the E SI (Ref. 79 , pp. 11 , 15 ). E le v ated le v els of PCE were d etected in so il samples E2 SJ0 (2 5 μg / kg ) and E2 SH6 (8 10 μg /kg) that were ob tained from the property at 2321 East 38 th Street (Re f. 79 , pp. 12, 93 , 97 ; 81, pp. 9, 10, 15, 16, 40, 41; 103 , p. 2)

. Additionally, elevated levels of PCE were detected in the ground water during the ESI on the S& K property (Ref. 79, pp. 210, 211, 212; 80, pp. 28, 29, 32, 33, 34, 63, 65; 111, pp. 3, 4; 112, p. 10).

Quick Stop Cleaners The property is located at 2306 East 34 th Street and is IDEM active State Cleanup project #0000

- 00

- 295 (Ref. 126, p. 1 ; Figure 1

- 4 of this HRS documentation record ). A dry cleaning business operated on the property from 1967 to 1994 (Ref. 126, p. 3). The property is adjacent to a Marathon gas station (Ref. 126, p . 22). PCE was detected in subsurface soil samples collected from the property as high as 2,580 ug/mg and as high as 4,610 ug/mg on the adjacent Marat hon property (Ref. 126, p. 4). PCE in groundwater samples were as high as 480 ug/l (Ref. 126, p. 7).

Walkers Cleaners The property is located at 1841 East 46 th Stre et (Ref. 124, p. 1 ; Figure 1

- 4 of this HRS documentation record ) and was historically a dry cleaner (Ref. 124, p. 2). Reportedly, the cleaners used “a specialty blend of mineral spirits in its dry cleaning operations” and “never used chlorinated solvents” (Ref. 124, p. 2). The propert y is the location of IDEM Leaking Underground Storage Tank (LUST) incident #199812591 for a release of mineral spirits from regulated underground storage tanks (USTs) (Ref. 124, p p . 1 , 2 ). C oncentrations of PCE have also been detected in groundwater samples collected from this property as high as 86 ug/l (Ref. 124, pp. 2 and 18). Additionally, PCE was detected as high as 79.0 ug/l in wells located off and to the north of the property in grab samples collected in August 2011 (Ref. 124, p p . 38, 49 ). An unidentified source is attributed as the source of PCE in groundwater at the property (Ref. 124, pp. 2 and 3).

College 60 Minute Cleaners The property is located at 4838 North College Avenue and is IDEM State Cleanup site 2010

- 04

- 202 (Ref. 125, p. 1 ; Figure 1

- 4 of this HRS documentation record ). A release of dry cleaning solvent PCE has bee n documented (Ref. 124, p. 5). The property has been a dry cleane r since 1974 (Ref. 125, p. 7). Concentrations of PCE in subsurface soil sam ples and grab groundwater samples collected from the property were as high as 133,000 ug/mg (Ref. 125, p. 24) and 485 ug/l (Ref. 125, p. 25) , respectively.

Morellis Dry Cleaners The property is located at 5367 North Keystone Avenue and is IDEM Voluntary Remediation Site #6070401 (Ref. 127, p. 1 ; Figure 1

- 4 of this HRS documentation record ). The facility has been a dry cleaner since at least 1955 (Ref. 127, p. 7). A ground water plume containing primarily PCE has been documented on and off of the property (Ref. 12 7 , p. 7).

BP Connect The property is located at 2450 East 52 nd Street and is IDEM LUST incident #200007519 (Ref. 128, p. 1 ; Figure 1

- 4 of this HRS documentation record ). The facility is a convenience store and gasoline station that encompasses combined parcels (Ref. 128, p. 1) where historical operations included a waste oil tank and an oil/water separator (Ref. 128, p. 2). Ground water samples collected from soil borings were contaminated with TCE, cis -1
, 2- DCE, and VC above applicable default closure levels (Ref. 128, p. 2).

There are at least 40 different possible sources of the ground water plume that have been identified within less than 2 miles of the boundary of the plume (Ref. 129, pp. 2, 3; 116, pp. 48

- 57; Figure 1

- 4 of this HRS documentation record ; 122, p. 1; 130, p. 1). A table that summarizes these 40 possible sources can be found on pages 2 and 3 in R eference 129

.24 3. 0 GRO UND WATER M IG RA TI ON PATHWAY

3.0. 1 GE NERAL CO NS IDE RA TI ONS

Region al Geology/Aquifer Description Most of the soils in the project area are part of the Genesee

- Sloam association of deep, well drained and very poorly drained, nearly level soils formed in loamy alluvium (Ref. 132, pp. 3-4 ). The majority of the surface soil consists of Urban Land that is so altered and obscured by development that identification of the soils is not feasible (Ref. 132, pp

. 5-8 ).

- Aquifer/Stratum 1 (uppermost): Outwash

Description

Thr ee gene r alized typ es o f gl a cial te rr ain ar e pr esent in t he ar ea ( Ref

. 131, p

. 3) . Al on g Fall C r eek, sa nd an d g r avel outwa sh i s pr imarily e nc ou nte red, w hi ch form ed by meltw ater ro utes form ed in, o n, o r un d er the ice during d eglaci a ti on (Ref

. 131, pp . 3- 4; Ref

. 133, p

. 6) . T hin d isc o nt i nu o us till u nits ar e pr esent wi th in t he s a nd and g r av el (Ref

. 131, p

. 4) . N or th and s outh of Fa ll Cree k, mixed sequences of outwash bodies and fans o ve r lie a nd a r e inte r calat ed with multi p le ti ll u ni ts ( Ref

. 131, p p. 3-4). Along the edges of the project area, loam t ill with locally small and medium

- sized sand and gravel un i ts, is pr es e nt ( Ref

. 131,
p p. 3-4).

Subsurface environmental investigations conducted in area of the ground water plume confirm the stratigraphy and geology in the area of the plume as discussed in the abo ve paragraph (Ref. 23, pp. 33 to 37, 84, 88, 89; 82, pp. 24, 27; 83, pp. 13, 15; 125, pp. 27, 33, 34). These investigations also determined that the hydraulic conductivity of the sand and gravel aquifer is between 1.7 × 10 - 4 and 5.1 × 10 -4 centimeters per second (Ref. 23, pp. 39, 136, 138).

- Aquifer/Stratum (deepest): Karst

Description

B el ow t he u nc o ns o li d ated mater ials, the be dro ck co nsi s ts o f the Dev o ni an-a ged Mu scata tu ck Group o f l ime st o ne a nd do lom ite ( Ref

. 131, pp

. 5-6). T he ca rbo nate ro ck ge nt ly dip s to the south we st (Ref

. 133, p

. 5) . Prior to glaciati on , the t o p of the be dro ck su rface w as ex po sed to w ea t he ring a nd underwe nt ka r st d evel opm ent (Ref

. 133, p

. 5) . T he ref or e, the c a rbo nate

su rf ace is cha r acte riz ed as r elict ka r st, mar ked by sinkho les, s mall ca ves, a nd o ther so luti on f ea tur es ( Ref

. 133, p

. 5). T he

ca rbo nate exten ds m or e th an 200 f eet d eep (b el ow an el e vati on of 500 f eet msl) and is pr esent th roug ho ut t he e n ti re pro j ect

ar ea ( Ref

. 131, pp

. 5- 6; 133, p

. 5)

. A well log for a municipal test well in the project area displays evidence of karst, as it reports “crevice lost all fluid” at a depth of 139.5 to 140 feet below grade (Ref. 135, pp. 21

- 22). Geologic cross

- sections prepared for the Wellhead Protection Plan delineation depict the generalized geology of the project area ( Ref

. 7, pp

. 3, 34, 35 ).

Subsurface environmental investigations conducted in area of the ground plume confirm the stratigraphy and geology in the area of the plume as discussed in the above paragraph (Ref. 23, pp. 33 to 37, 84, 88, 89 ; 82, pp. 24, 27; 83, pp. 1 3 , 15; 125, pp. 27, 33, 34 )

. The hydraulic conductivity of the karst aquifer is estimate d to be 10 -2 centimeters per second (Ref. 1, Table 3

- 6).

- A q uifer Interconnection

Description

Ground water in the Keystone Corridor is present within the unconsolidated sand and gravel outwash as well as the carbonate bedrock (Ref

. 116, pp

. 24

- 25; 7, p . 3 ; 23, pp. 38

– 41 ). Static water levels are generally 20 to 50 feet below ground surface (Ref

. 116, p

. 23). As shown on the potentiometric surface map, the shallow ground water generally flows towards Fall Creek, so that north of Fall Creek ground water flows towards the south

- southwest and south of Fall Creek water flows towards the west (Ref

. 131, p

. 7).

The outwash and carbonate bedrock (karst) aquifer are evaluated as a combined aquifer. Pump test data performed on the Tuchman Cleaners facility in 2004 demonstrated interconnection , i.e., when nearby municipal well FC 11, completed25 351 feet below grade in the karst a quifer (Ref. 7, p p . 2, 31 ), was turned off, water levels rebounded close to 6 feet in both intermediate and deep wells in the outwash aquifer (Ref. 25, pp. 8
, 23 ; 123, pp. 1, 2 ). Several well logs for the area show

no continuous layer of clay or sandy/grav elly clay above the carbonate bedrock within two miles of the center of the ground water plume ( Ref. 7, pp. 34, 35; 23, p. 15; 102, pp. 22, 24; 116, pp. 22, 24; 135, pp

. 4
, 5, 11
, 16
, 17 , 26 ; Figures 1- 3 and 1

- 4 of this HRS documentation record ). All of the interconnected sand and gravel units act as a single, unified aquifer system (Ref

. 133, p . 7). The carbonate rocks (karst aquifer) are recharged through the outwash (Ref

. 116, p

. 23 ). Therefore, the ground water in the project area is considered to be from the same, combined interconnected aquifer (Ref 7, p p . 5, 6 ).

Va rious concentr ati on s of PC E, TCE, vinyl chl or id e, and ci s- 1, 2 DCE have b een iden ti fied in mun ici p al w ells FC-2 , F C-7, FC-8, and FC-11 of the City of Indiana po li s’ Fall Cr eek mun ici p al w ell fiel d (Ref. 82, pp. 2

- 62; Background Ground Water Well Sample Table and the Contaminated Ground Water Sample Table 2 (Municipal Well FC2) of this HRS documentation record) . These we lls ar e scr ee n ed w it h in the karst portion of the combined a qu if er

(Ref. 7
, pp

. 2, 3, 31, 32, 34, 35 )

. Monitoring wells within the ground water plume and completed in both the outwash and karst aquifer s contain concentrations of VOCs indicating that the clay lenses do not provide a hydraulic barrier to ground water flow between the outwash and karst aquifers (Ref. 20, pp. 15, 17, 18; 23, pp. 82, 84, 88, 89; 26, pp. 70, 72, 73; 125, pp. 27, 33, 34).

Th e Fall Cr eek mun ici p al w el ls ( ta rgets for this HRS do cumen tati on r ec ord ) are scr ee n ed in the same combined a qu if er

( Ref. 116, pp. 24

- 25; 7
, pp . 2 ; 135, pp . 2

– 5; 102
, pp

. 22, 23, 24 ). Th is aquif er is contamin ated w ith ele v ated le vels o f PCE ( Ref. 78, p. 203; 96, pp. 17

- 18, 39, 106

- 108; 79, p. 205, 206; 80 pp. 5 -8 , 9 -12 56 -59). Th is aquif er

is u ti l ized by the Indiana po lis

mun ici p al well s ys tem ( Ref. 116, p p. 24

- 25 ; 7, p. 2 ; 102, pp. 23, 24 )

. Ref er to t he Fall Creek Municipal Well FC17 Table and Lev el I S amp les ( Fall Creek Mun ici p al W ell FC2) Tab le fo un d in Secti on 3.1. 1 of th is HRS do cumen tati on r ec ord

.

- Aquifer Discontinuities within Target Distance Limit

Description

There are no aquifer boundaries, or discontinuities, such as a mountain range, ocean (Ref. 3, p. 1; 134, p. 1), bedrock faults or fractures, (Ref. 131, p. 5; 7, pp. 3, 34, 35 ), etc.
, within 4

- miles of the project area (Ref. 7, p. 3 , 34, 35 ).

SUMMARY OF AQUIFER(S) BEING EVALUATED

A

q u i fe r N o. A q u i fe r N a m e I s A q u i f er I n te r c o nn ec t ed with U pp er Aquifer within 2 mi le s? ( Y/N/ N A) I s A q u i f er C o n ti n u

o u s within 4-mi le T DL ? (Y

/N) I s A q u i f er K a r s t? (Y

/N)

1 Outwash NA Y N

2 Kars t Y Y Y

The combined (outwash and karst) aquiferis the a qu if er

b ei ng evalu ate d. The muni ci p al w el ls in the study ar ea are

scr ee n ed in th is aquif er

(Ref. 7, p. 2; 102, pp. 22

- 23; 135, pp. 2

- 5; Secti ons 2.2. 2 and 3.1 .1 of this HRS documenta ti on

r ec or d).26 3.1 LI K ELI HOOD OF R EL EASE

3.1.1 OBSE RV ED RE LE A SE

Aquifer B eing E valuated: 1 Combined

Ch e mical Ana l ys is: Establi s hing an observed release by ch e mical a na l ys is requires ana l ytical e vidence of a ha z ardous subst a nce in the media si gni f ic a nt ly above background lev el (Ref. 1, Section 2.3, p. 63 ). If the ba c kground concentrati on is not detected (or is less than t he detection li mit), an observed release is establ i shed w hen t he s am ple mea s ur eme nt equa ls or exceeds its own sample qu a ntit a tion li mit (S QL) and th at of t he background sam ple (Ref. 1, Table 2

- 3, Section 2.3, p. 63 ). If t he S QL ca nnot be establi s hed, the E PA contract - required quantitati on lim it (CRQL) is used in place of the SQL (R ef. 1, Section 2.3, Table 2

- 3, p. 63).

Contamin ated Sam pl es: The extent of the ground water plume is depicted by samples from direct

- push wells
, municipal wells and monitoring wells known to contain volatile organic compounds at concentrations that meet observed release criteria ( Ref. Figure 1 -3 of this HRS documentation record; 122, p. 1; 130, p. 1 ). The plume currently measures approximately 4500 feet long (north to south) and approximately 1500 feet wide (east to west) ( Ref. 122, p. 1; 130, p. 1; Figure 1

- 3 of this HRS documentation record).

The area of the ground water plume is based on available samples that meet the criteria for an observed release (Ref. Co ntaminated Gro un d Wa te r (Obt ai ned b y D i rec t Push) Samp le Tab le of this HRS documentation record; Contamin at ed Ground W ater Ob ta ined From Es tabli shed Mo ni to ring Wells Sam ple Ta ble 1 of this HRS documentation record ; Fall Cr eek Mun ici p al W ell FC1 7 Table of this HRS documentation record ; Contamin ated Ground W ater Sam ple Ta ble 2 (M unicip al Well FC2) of this HRS documentation record ; Section 3.1.1 of this HRS Documentation Record). The plume boundary was digitized by connecting wells that met observed release criteria (Ref. 122, p. 1; 130, p. 1; Figure 1 -3 of this HRS documentation record)

.

B ackground we lls were identi f ied outside the boundaries of t he plu me ( Ref. 131, p . 7 ; 139, p. 1; B ackground Ground W ater Sam ple T able s f ound in Section 3. 1.1 of th is HRS docum e ntati on record; Figure 1

- 3 of this HRS documentation record ; 122, p. 1; 130, p. 1 ).

In 2009 a nd 2011, IDEM ’s Si te Inves t iga t ion Secti on conducted SI and ESI activities at t he K ey st o ne Corridor (Re f. 78, pp. 1, 11, 18

- 23; 79, pp . 5 , 11 ). T he ground w ater obtained from mo nitor i ng we lls a nd municipal w el ls w as f ound to be cont ami nated w ith chlorinated VO Cs (R ef. Sect i ons 3.1.1, 3. 3.2

. 2, and t he Contaminated Ground W ater (Obtained by D irect P ush) Samp le T able, Cont ami nated Ground W ater Obtained Fr om Establ i shed Monitoring W ells Sa mple T able 1, Cont ami nated Ground W ater Sam ple T able 2 (M unicipal W ell FC2) fou nd in Section 3.1.1 of this HRS documen t ation record ). IDEM u tilized the EPA C ontract L aboratory P ro gram (CLP) f or

sam ple analys is (Ref. 78, p. 18; 79, p. 11). Sample re su lts sh ow ed th at the co n ce n trations of v in yl ch loride w ere abo ve background and above the EPA ma xim um co ntaminan t le v el (M CL) of 2 μ g/L in ground wa ter sam pl es obt ai n ed f rom FC2 ( Ref. 2, p. 12; 78, p

. 2 03; 9 6, pp. 17

- 18 , 39
, 1 06 -10 8; 79, p. 20 5 ; 80 pp. 5, 7, 56-5 7). Con ce n tratio ns of PCE w ere fo un d to be

as h igh as 210,000 μg/L, TCE as hi gh as 1,300 μg/L, and vinyl chloride as high as 480 J μg /L (Ref. 78, p p . 46 , 117, 118 ; Contamin ated Gro un d W ater Obtained From Established Mo n itoring W ell s Sam ple T able 1 ).

T he e xt ent of this plume has not been co m plete ly del i neated at this ti me b ut has been char a cterized by data fro m

mo nitor i ng we lls, grab sa mpl es obtained by direc t- pu sh me t hods, and municipal w ells (R ef. Section 3.1.1of this HRS documentation record ; Figure 1-3 of th is HRS docu me nta t ion record ; 122, p. 1; 130, p. 1 ).

T he f oll owi ng set of tables de picts the s a mples t hat meet th e observed release criteria (Ref. 1, Table 2

- 3, p. 63)

. These tables list the organic hazardous substances with their concentrations and SQLs for each sample. These samples were qualified as “releases” based on the criteria in the HRS (Ref. 1, Table 2

- 3, p. 63). The well locations are depicted on Figure 1

- 3 of this HRS documentation record (Ref. 78, pp. 46, 48; 79, pp. 32, 33)

.

T he Co ntaminated Gro un d Wa te r (Obt ai ned b y D i rec t Push) Samp le Tab le li sts ground wa ter sam pl es that w ere obtained from a direct pu sh me t hod that w ere fo und to be cont ami nated w ith el e vated levels of c hlorin a ted com pounds meeting the27 observed release criteria (Ref. 1, Table 2

- 3, p 63)

. A ll direct pu sh instrum e nt w ater sa mples in t he area w ere collected in the sha llow sa nds a nd grave ls of t he combined aqu if er

. During 2011 ESI, a soil boring log was completed for each direct push ground water sampling location. The soil sample number on the boring log corresponds to ground water sample number(Ref. 7, pp. 4, 5 ; 78, pp. 236

- 247; 79, pp. 15, 32, 33, 233

- 250 ).

B ac kg rou nd G ro un d W ater Sa mp le s: On Oct ob er 19 , 20, 21, 22, and 29
, 20 09, IDEM SI staff condu cted an SI at for the Keystone C orr i do r s ite (Ref. 78
, pp . 1
, 11, 1 8)

. On Novemb er 1 5 a nd 16
, 20 11, IDEM SI s ta ff condu cted an ESI (Ref. 79 , p. 11) . The b ac kg ro un d

w ater samp les were ob tai n ed from established mon it or ing wells
, dir ect p us h meth od s, and mun ici p al well s (Ref

. 78,
pp . 19 , 53; 79, pp. 16, 18 ). The project area is underlain by a combined aquifer ( Ref. 7, p p . 3, 5 ; 131, pp. 3

- 65 ). Background ground water samples that were obtained from monitoring wells were obtained from a shallow ( 4 3 feet below ground surface) portion and a deeper portion of sand and gravel deposits ( 68.5 feet below ground surface ) of the combined aquifer (Ref. 7, p p . 3, 5; 78, pp. 19, 53, 64, 65, 261; Background Ground Water Sample Table ( Obtained from two established monitoring wells ) of this HRS documentation record ). Background ground water samples that were obtained from direct push methods were also obtained from the shallow horizon (19.5

- 24 feet below ground surface ) containing the sand and gravel deposits of the combined aquifer (Ref. 7, p p

. 3, 5; 79, pp. 35, 248, 250; Background Ground Water Sample Table ( Obtained via a Direc t Push Method ) of this HRS documentation record ). The background ground water samples that were obtained from municipal wells FC 7 and FC11 were obtained from limestone bedrock, from which the wells are screened in the combined aquifer (Ref. 7, p. 2, 31, 32 ; 78, p. 255). Background ground water samples collected from the sand and gravel portion of the aquifer are compared to release ground water samples collected from the sand and gravel aquifer. Background samples collected from the karst portion of the a quifer are compared to release samples collected from the karst portion of the aquifer (see the tables in this section of the HRS documentation record documenting the depths of the background and release samples). The table on the following page s depicts t he results of those bac kg rou nd g ro un d w ater samp le s.
The ground water samples obtained from the monitoring wells listed below were collected in three (3) 40

- m ill iliter vials preserved with hydrochloric acid (HCL) (Ref. 78, p. 19). Nitrile gloves were worn and discarded between the

c ollection of each sample ( Ref. 78, p. 19). Monitoring wells were purged three (3) well volumes before sampling. Ground water was obtained from the monitoring by using bailers (Ref. 78, p. 19). Ground water was poured from the top of the bailer into the vials being careful so that n o air bubbles were present in the sample (Ref. 78, p. 19)

. The vials were then labeled and placed in a cooler with ice (Ref. 78, p. 19).

Background Ground Water Sample Table (Obtained from two established monitoring wells)

EP A CLP # ID EM # Co nt ro l # Samp le D ate Lo cati on Hazardou s S ub sta nc e Samp le Co nc e nt ra tio n Co nt r act Re qui re d Q ua ntita ti o n Lim it Depth (F ee t) Below Ground Surface Refere nce

E2Q Z1 GW2 MW6i 10 /19/09 Nor th ea st sid e o f T

uch m an C leaner s; MW6i V in yl Ch lor id e Ci s-1,2-DCE
Tr an s-1,2-DCE
TCE PCE 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 43 f ee

t de ep Ref. 23, pp. 85, 138

- 139; 78 , pp

. 46, 195 ; 96
, pp

. 13

- 14 , 37
, 75 -77 ; 119, p. 199

E2Q Z2 GW3 MW6d 10 /19/09 Nor th ea st sid e o f T

uch m an C leaner s; MW6d V in yl Ch lor id e Ci s-1,2-DCE
Tr an s-1,2-DCE
TCE PCE 0.5 U μg/ L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 68.5 f ee

t de ep Ref. 23, pp. 85, 188

- 189; 78 , pp

. 46, 196 ; 96
, pp

. 13

- 14 , 37
, 82 -84 ; 119, p. 19928 The ta b le b el ow pro vid es a s um mary of the b ac kg rou nd g ro un d w ater samp les th at were ob tai n ed v ia a dir ect pus h meth od . The referenced samples in the following table were collected from the sand and gravel interval of combined aquifer ( Ref. 7, p p . 5 , 34, 35; 23, pp. 88, 89; 78, pp. 261, 262 ). The following describes how ground water was obtained from a direct push method. A stainless steel screen was utilized on the direct push method to obtain ground water. The stainless steel screen was attached to the drill pipe and pushed to a position below the water table as identified in the soil boring log and at the same location of the soil boring. When the desired depth was reached, water was allowed to flow through the stainless steel screen from the surrounding soil media. A plastic tube connected t o a peristaltic pump was inserted down the drill pipe to a depth at the midpoint of the screen in order to bring the ground water up to the surface. Pumping of the water continued until the water became clear. After the water became clear, the water was al lowed to flow directly into three (3) 40 ml vials that contained hydrochloric acid as a preservative. The vials were then labeled and placed in a cooler with ice ( Ref

. 143, p. 1)

. Backgro und Gro und W at er Sample Ta ble (O b ta ined v ia a Direct Push Metho d)

EPA CLP # IDEM # Control # Sample Date Location Hazardous Substance Sample Concentration ( μg/L ) Contract Required Quantitation Limit Depth (feet) Below Ground Surface Reference

E2SH5 GW10 NA 11/15/11 Connies backlot, southeast corner of parking lot PCE TCE Cis

- 1,2

-

DCE 1,1,1

- TCA VC 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 21

- 24 feet Ref. 79, p p

. 32, 217 , 248 ; Ref. 80, pp. 21

- 22, 60

- 61; Ref. 111, p. 3 ;

Ref. 119, p. 199

E2SG7 GW11 NA 11/16/11 Church lot; 41 st St. & Sherman PCE TCE Cis

- 1,2

-

DCE 1,1,1

- TCA VC 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 U μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 19.5

- 23.5 feet Ref. 79, p p

. 32, 218
, 250 ; Ref. 80, pp. 17

- 18, 60

- 61; Ref. 111, p. 5 ; Ref. 119,

p. 19929 The ta b le b el ow pro vid es a s um mary of the b ac kg rou nd g ro un d w ater samp les th at were ob tai n ed from m unicipal w el ls. A ll of these we lls lis ted a re comp leted in the karst interval of the combined aquif er

(Ref. 7
, pp . 2 , 31, 32 ). Municipal well water samples obtained during the Keystone Corridor sampling in November 2011 were obtained from spigots located on the municipal well pump. Wells were purged for a short period (10

- 15 minutes) as all active wells tha t were sampled had been running continuously (from 3 hours to several day s) prior to taking the sample. Samples were obtained by direct pour into three (3) 40

- ml glass vials containing h ydrochloric acid preservative. Samples were collected in a manner so t hat no air bubbles were present in the vial after securely closing the lid. Nitrile gloves were worn during the collection of all samples and the samples were placed directly into an ice

- filled cooler (Ref. 142, p. 1).

Backgro und Gro und W at er Well Sam ple Ta ble

(O b ta ined from o per at ing M unicip al We l ls )

EPA CLP # IDEM # C on trol # Samp le Da te Lo ca ti on H aza r dou s Sub st ance Samp le C on ce n tr ati on ( μg/L ) C on tr act Re qu ir ed Quantitation Limit Dep th ( F ee t) Below Ground Surface Referen ce

E 2S G3 F C7 NA 11 / 15 / 11 Fa ll Cr eek Mun icipal We ll F C7 VC Cis

- 1,2

- DCE 0.50 μg/L 0. 20 (J) μg/L 0.50 μg/L 0. 5 μg/L 280 Ref. 79 , pp. 32, 20 7; 80,
p p. 13

- 14 , 5 8; 7
, pp. 2 , 32 ; 111, p

. 2; 1 12
p . 5; 119, p. 199

E2R 31 FC11 NA 10 / 29 / 09 Fa ll Cr eek Mun icipal We ll FC11 VC Cis

- 1,2

- DCE 0. 38 J μg/L 0. 27 J μg /L 0. 5 μg/L 0. 5 μ g/ L 35 1 Ref. 78 , p p. 59
, 21 5; 95, p

. 2; 98, pp. 6, 11 , 12, 2 8, 65 ; 7, pp. 2
, 31 ; 119, pp. 199

- 20530 The ta b le b el ow pro vid es a s um mary of the contaminated g ro un d w ater samp les th at were ob tai n ed v ia a dir ect pus h meth od . The referenced samples in the following table were collected from the sand and gravel interval of the combined aquifer (Ref. 7, p p . 5 , 34, 35; 79, pp. 236

- 246, 261, 262; 23, pp. 88, 89 ). The following describes how ground water was obtained from a direct push method. A stainless steel screen was utilized on the direct push method to obtain ground water. The stainless steel screen was attached to the drill pipe and pushed to a position belo w the water table as identified in the soil boring log and at the same location of the soil boring. When the desired depth was reached, water was allowed to flow through the stainless steel screen from the surrounding soil media. A plastic tube connected t o a peristaltic pump was inserted down the drill pipe to a depth at the midpoint of the screen in order to bring the ground water up to the surface. Pumping of the water continued until the water became clear. After the water became clear, the water was al lowed to flow directly into three (3) 40 ml vials that contained hydrochloric acid as a preservative. The vials were then labeled and placed in a cooler with ice ( Ref

. 143, p. 1)

.

Co ntaminated Gro un d Wa te r (Obt ai ned b y D i rec t Push) Samp le Tab le

EPA CLP # IDEM # Sample
Date Location Hazardous Substance Sample Concentration Sample Quantitation Limit Contract Required Quantitation Limit Depth Below Ground Surface References

E2SG4 GW10/GW20 11/16/11 Dup. of E2SK0 1,1,1

- TCA 3.3 μg/L 0.5 μg/L 0.5 μg/L 26 1⁄2 to 29 feet Ref. 79, pp. 18, 32, 219
, 246 ; Ref. 80, pp. 15, 58; Ref. 111, p. 5; Ref. 112, p. 10 ; Ref. 119, p. 199

E2SH7 GW3 11/15/11 Southwest corner of the ACE Cash

Express parking lot; approximately

10 feet west

of Ace Express bldg. PCE 3.0 μg/L 0.5 μg/L 0.5 μg/L 21.5 to 24 feet Ref. 79, p p

. 17, 32, 212
, 238 ; Ref. 80,

pp. 27

- 28, 63; Ref. 111,

p. 3; Ref. 112, p. 10 ; Ref. 119, p. 199

E2SH9/E2SH9DL GW2 11/15/11 Ace Cash Express parking lot; 75 feet north of alley; about 8 feet east of west property line. PCE 23 μg/L 1.0 μg/L 0.5 μg/L 21.5 to 24 feet Ref. 79, p p

. 17, 32, 211
, 236 ; Ref. 80,

pp. 30 , 32, 62

- 63; Ref. 111, p. 3; Ref. 112, p. 10 ; Ref. 119,

p. 199

E2SJ1 GW1 11/15/11 Ace Cash Express parking lot; 30 feet south of 38 th Street, 15 feet west

of bldg. PCE,
TCE 5.8 μg/L
1.5 μg/L 0.5 μg/L
0.5 μg/L 0.5 μg/L
0.5 μg/L 21.5 feet Ref. 79, p p

. 32, 210 , 234 ; Ref. 80, pp. 33

- 34, 65; Ref. 111, p. 4; Ref. 112, p. 10 ; Ref. 119, p. 19931 EPA CLP # IDEM # Sample
Date Location Hazardous Substance Sample Concentration Sample Quantitation Limit Contract Required Quantitation Limit Depth Below Ground Surface References

EDSJ4 GW4 11/16/11 Mosque; west side lot PCE 2.0 μg/L 0.5 μg/L 0.5 μg/L 21 to 24 feet Ref. 79, p p

. 17, 32, 213
, 240 ; Ref. 80,

pp. 37

- 38, 65; Ref. 111,

p. 5; Ref. 112, p. 11 ; Ref. 119, p. 19

E2SJ6 GW5 11/16/11 Mosque; northwest

corner PCE 8.4 μg/L 0.5 μg/L 0.5 μg/L 21.5 to 24 feet Ref. 79, p p

. 17, 32, 214
, 242 ; Ref. 80,

pp. 39

- 40, 65; Ref. 111,

p. 5; Ref. 112, p. 11 ; Ref. 119, p. 199

E2SJ8 GW8 11/16/11 Rear of Thompson Contracting; east side by RR tracks 1,1,1

- TCA 7.1 μg/L 0.5 μg/L 0.5 μg/L 26.5 to 29 feet Ref. 79, pp. 17, 32, 215
, 244 ; Ref. 80, pp. 41, 66; 111, p. 5; 112, p. 11 ; Ref. 119, p. 199

E2SK0 GW9 11/16/11 Thompson Contracting; south end of

out bldg. 1,1,1

- TCA 3.3 μg/L 0.5 μg/L 0.5 μg/L 26 1⁄2 to 29 feet Ref. 79, pp. 32, 216 , 246 ; Ref. 80, pp. 43, 66; Ref.

111, p. 6; Ref. 112, p. 11 ; Ref. 119,

p. 19932 The fo ll owing ta b le lis ts g rou nd wa ter samples th at were ob tai n ed from m on it or ing w ells th at meet the observed release criteria for chl or ina ted com po un ds (Ref. 1, Table 2

- 3) . Al l mon it or ing w ell w ater samp les in the ar ea wer e

co llected in the combined aquif er

(Ref. 7, p p

. 3, 5; 78
, p. 19
, 20 ; 79 , p. 15). The ground water samples obtained from the monitoring wells listed below were collected in three (3) 40

- milliliter vials preserved with hydrochloric acid (HCL) (Ref. 78, p. 19). Nitrile gloves were worn and discarded between the collections of each sample (Ref. 78, p. 19). Monitoring wells were purged three (3) well volumes before sampling. Ground water was obtained from the monitoring by using bailers (Ref. 78, p. 19). Ground water was poured from the top of the bailer into the vials being careful so that no air bubbles were present in the sample (Ref. 78, p. 19). The vials were then labeled and placed in a cooler with ice (Ref. 78, p. 19).

Contamin at ed Ground W at er Ob ta ined From Es ta bli shed Mo ni to ring Wells Sam ple Ta ble 1

EPA CL P # ID EM # Samp le D at e Lo cati on Hazardou s S ub sta nc e Samp le Co nc e nt ra ti on Sample Quantitation Limit Co nt r act Re qui r ed Qua ntit a ti o n Limit De pt h Below Ground Surface Referenc es

E2QZ3 / E2QZ3DL GW-4 10 /19 /09 M on it or in g well #2 i ; in

front o f Tuchma n Cleaner s;

n or th w e st Ci s-1,2-DCE PCE 550 μg /L 2 00 0 0 μg/L 25 μg/L 1 00 0 μg/L 0.5 μg/L 0.5 μg/L 42 f eet R e f

. 78
, p p

. 53, 197; 96, pp

. 6, 9-

10
, 37 , 1 60 - 165 ; 112, p. 8; 119, p. 199 ; 23, p. 121

E2QZ4DL GW-5 10 /19 /09 D up l icat e o f E2QZ3 PCE 2 100 0 0 μg/L 1 00 0 0 μg/L 0.5 μg/L 42 f eet R e f

. 78
, p p

. 53, 198; 96, pp

. 6, 9- 10
, 37 ; 112, p. 8; 119, p. 199 ; 26, p.

E2R00 GW-6 10 /19 /09 M on it or in g wel l PZ 10 d

north o f T

uch m an Cle an er s on

the side pa rk in g lo t Ci s-1,2-DC E TCE 3. 8 μg /L 3 μg /L 0. 5 μg /L

0. 5 μg /L 0. 5 μg /L 0. 5 μg /L 30 f eet Ref. 78 , pp. 53, 199; 96, pp. 17

- 18
, 37
, 100; 11 2,
p. 8; 119, p. 199 ; 26, p. 107

E2R0 1/E2R01DL GW-7 10 /19 /09 M on it or in g well ac ro ss th e str ee t o f th e we st o f T

uch man Cle an er s next
t o the Keyston e pet Ho s pi tal @ W13 Ci s-1,2-DCE TCE PCE 1 30 0 μg/L 240 μg /L 3 70 0 μg/L 500 μg /L 50 μg/L 500 μg /L 0.5 μg/L 0.5 μg/L 0.5 μg/L 45 f eet Ref. 78 , p. 200; 96, pp

. 6, 9- 12
, 38 , 1 72 - 1 77 ; 11 2, p. 8; 119, p. 199 ; 23, p. 176

E2 R2 6/E2R26DL GW-37 10 /29/ 09 T uch man Cle an ers MW 8 V in yl Ch lor id e
Ci s-1,2-DCE

Tr an s-1,2-

DCE

TCE 260J μg/L (2 6 μg/L) 600 μg /L 1. 6 μg /L 1. 5 μg /L 25 μg/L 25 μg/L 0. 5 μg /L

0. 5 μg /L 0.5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 23 Ref. 78 , p. 22 1; 98, pp. 4
, 7, 9- 10
,

28
, 31
, 50 -55 ; 112, p. 2; 118, pp

8, 12; 119, pp. 199

- 205 ; 23, pp. 87, 135

E2R1 2/E2R12DL GW 15 10 /21/ 09 Nor th we st

c or

ne

r o f Thomas Cater in g Ci s-1,2-DCE
TCE PCE 3. 1 μg /L 7. 3 μg /L 45 μg/L 0. 5 μg /L 0. 5 μg /L

2. 5 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 19.25 Ref. 78 , p. 208; 97, pp. 6
, 8-9, 18
, 40

- 45 ; 112, p. 7; 119, p. 199 ; 64, p. 4233 EPA CL P # ID EM # Samp le D at e Lo cati on Hazardou s S ub sta nc e Samp le Co nc e nt ra ti on Sample Quantitation Limit Co nt r act Re qui r ed Qua ntit a ti o n Limit De pt h Below Ground Surface Referenc es

E2R1 3/E2R13DL GW-16 10 /21/ 09 MW3; Thoma s Cat er in g pa r kin g lot Ci s-1,2-DCE

TCE PCE 3. 6 μg /L 30 μg/L 460 μg /L 0. 5 μg /L 0. 5 μg /L 25 μg/L 0.5 μg/L 0.5 μg/L 0.5 μg/L 19.95 R e f

. 78
, p

. 2 0 9 ; 97, pp. 6, 8-9, 18, 46

- 51 ; 112 , p. 7; 119, p. 199 ; 64, p. 42

E2R08 GW-14 10 /20/ 09 Indianapolis Water Company Well PC E 0.68 μg /L 0.5 μg/L 0. 5 μg /L 66 f ee t Ref. 78
, p. 20 7; 96, pp

. 19

- 20 , 40

- 41 , 1 16 -1 18 ; 95, p

2; 119, p. 199

E2R0 9/E2R09DL GW-13 10 /20/ 09 Indianapolis Water Co. Well Ci s

- 1
, 2

- D C E Tr an s-1,2-

DCE
TCE P C E 100 μg/L 2. 2 μg /L 12 μg/L 540 μg /L 25 μg/L 0.5 μg/L 0.5 μg/L 25 μg/L 0. 5 μg /L 0. 5 μg /L 0. 5 μg /L 0. 5 μg /L 36 f ee t Ref. 78 , p. 206; 96, pp. 7
, 19

- 20
, 40- 41
, 11 9- 121 ; 112
, p. 8; 119, p. 199

J = E2 R26 vinyl chl or ide re su lt has an unknown b ia s due to an exceedance of the upper limit of the criteria window and adj us ted using the pro ce dure describ ed in EPA 540 -F- 94

- 028, Using Da ta to D ocument a n Obser ved R ele ase an d Obser ved C on ta mi na ti on , Novemb er 1996 ( Ref. 118, pp. 8, 12 ; 98, p. 4; 145 ). The adjusted concentration is in parenthesis.

The fo ll owing ta b le lis ts the groun d wa ter sample th at was ob tai n ed from Fall Cr eek Mun ici p al W ell FC17 th at w as found to contain el eva ted le v els of VOC s. Th is we ll h as not b een in prod u cti on f or

the past sever al y ea rs (Ref. 106, p.4 ). Th e mun ici p al

w ell w ater samp les were co llected from the sand and gravel interval of the combined aquif er

(Ref. 7
, pp

. 2, 3, 34

- 36 ). Municipal well water samples obtained from FC17 were obtained from a spigot located on the municipal well pump. Well FC17 was pumped for 30 minutes, then purged by removing 3 well volumes of water

. Samples were obtained by direct pour into three (3) 40

- ml glass vials containing h ydrochloric acid preservative. Samples were collected in a manner so that no air bubbles were present in the vial after securely closing the lid. Nitrile gloves were worn during the collection of al l samples and the samples were placed directly into an ice

- filled cooler (Ref. 78, pp. 19, 20, 214 ).

F a ll Cr eek Mun ici p al W ell FC17 Table

EPA CL P # ID EM # Co nt ro l # Samp le D at e Lo cati on Hazardous S ub sta nc e Samp le Co nc entration Co nt r act Requir ed Quant it ati on Limit Dept h Below Ground Surface Refere nc es

E2R30 GW30 NA 10 / 29 / 09 Mun icipal We ll FC17 TCE 0.98J ( 0.5 9) μg/L 0. 5 μg/L 82 f ee t Ref. 98
, pp . 5-6, 11

- 12 , 2 8,

62

- 64; 95 , p. 2; 118, pp. 8, 12 ; 119, pp. 199

- 205 ; 7, p. 36
J = The analyte was positively identified; the associated numerical value is an approximate concentration of the analyte in the sample (Ref. 98, p. 8). The bias associated with the numerical value is unknown and adjusted using the procedure described in EPA 54 0-F- 94

- 028, Using Qualified Data to Document an Observed Release and Observed Contamination , November 1996 (Ref. 118, pp. 8, 12; 98, p. 5 ; 145). The adjusted concentration is in parenthesis.34 The fo ll owing ta b le lis ts the groun d wa ter samples th at were ob tai n ed from Fall Cr eek Mun ici p al W ell FC2 th at w as fo un d to

con tain el ev ated levels of VO Cs at lev el I c on ce ntra ti o ns . Th e mun icip al we ll wat er samp les were co llected in the karst portion of the combined aquifer (Ref. 7
, pp. 2, 3 ). Municipal well water samples obtained during the Keystone Corridor sampling in November 2011 were obtained from spigots located on the municipal well pump. Wells were purged for a short period (10

- 15 minutes) as all active wells that were sampled had been running continuously (from 3 hours to several days) prior to our taking the sample. Samples were obtained by direct pour into three (3) 40

- ml glass vials containing hydrochloric acid preservative. Samples were collected in a manner so that no air bubbles were present in the vial after securely closing the lid. Nitrile gloves were worn during the collection of all samples and the samples were placed directly into an ice

- filled cooler (Ref. 142 , p. 1).

Contamin at ed Ground W at er Sample Ta ble 2 (M unicip al Well FC2)

EPA CL P # ID EM # Co nt ro l # Samp le D at e Lo cati on Hazardou s S ub sta nc e Samp le Co nc entration Sample Quantitation Limit Co nt r act Requir ed Quant it ati o n Limit D e pt h Below Ground Surface Refere nc es

E 2S G1 DL F C2 NA 11 / 15 / 11 Fa ll Cr ee k Mun icip al We ll F C2 Vinyl Chlo ri de Cis

- 1,2

- DCE 12 μg /L 49 μg /L 0. 5 μg /L 2. 5 μg /L 0. 5 μg/L 0. 5 μg/L 326 Ref. 79, p

. 205; 80 pp

. 7, 56 ; 11 1, p. 2 ;

11 2, p. 10; 119, p. 199 ; 7, p. 2 , 32

E 2S G2 / E2SG2DL F C2 NA 11 / 15 / 11 D up li cate of E 2S G1 Vinyl Chlo ri de Cis

- 1,2

- DCE 7. 9 μg /L 41 μg /L 0. 5 μg /L 2. 5 μg /L 0. 5 μg/L 0. 5 μg/L 326 Ref. 79, 20 6; 80 pp . 9, 11
, 58 ; 11 1, p . 2;

11 2, p. 10; 119, p. 199 ; 7, p. 2 , 32

E2R 05 GW- 10 NA 10 / 20 / 09 Fa ll Cr ee k Mun icip al We ll F C2 Vinyl Chlo ri de Cis

- 1,2

- DCE 3. 9 μg/L 16 μg/L 0. 5 μg/L 0. 5 μg/L 326 Ref. 78
, p. 20 3; 96 , pp

. 17
, 39
, 10 6 ; 11 2, p. 8; 119, p. 199 ; 7, p. 2 , 32

Lev el I Sam pl es (Fa ll Cre ek M unicip al Well FC2) Ta ble

S a m p le ID H aza r dou s Sub st ance H aza r dou s S u b st a n ce C on ce n tr ation ( μg /L) Benchmark Concentration (μg/L) B e n c h m a r k R e f e r e n c e f o r B e n c h m a r k

E 2S G1DL V i n y l C h l o ri de 1 2 u g /L 0.017 u g /L Cancer Risk R e f

. 2
, p

. 12 ; 8 0 p p

. 7
, 56

E 2S G2 V i n y l C h l o ri de 7. 9 u g /L 0.017 u g /L Cancer Risk R e f

. 2
, p

. 12 ; 8 0 p p

. 9
, 5 8

E 2 R 05 V i n y l C h l o ri de 3. 9 μg /L 0.017 u g /L Cancer Risk R e f

. 2
, p

. 12 ; 9 6
, pp

. 1 7, 3 9
, 1 0 6

Since an ob serv ed r elea se was d ete rmin ed by chem ic al anal ys is, a value of 55 0 is a ss ign ed

.

G ro un d W ater Observ ed R el ease Fact or Val u e: 55 035 A tt ribu ti on

T he Keyst o ne C orr i do r Ground Water Contamination is a doc ume nted r elease of P CE and degradation products TCE, cis

- 1,2

- DCE, and VC to t h e g ro und w ater th at has co nt ami nated o ne (1) of the active Fall Cr eek mu nici p al w el ls (FC2) (Ref. 19, pp. 1, 2; 78
, p

. 203; 96
, p p. 17-18
, 39 , 10 6- 108; 79, pp . 2 05 , 2 06 ; 80 , pp

. 5
, 7
, 9, 11
, 56- 58 ; Figu re 1- 3 of this HRS docume ntati on rec ord ; 122, p. 1; 130, p. 1 ).

T he c o m pou nds f ou nd in t he w el ls ar e manufactured chemicals, not thought to occur natu r al l y, a nd n on -d etected

co nce ntr ati on s in so me background wel ls show th at th ey ar e n ot ubiq uit o us th ro ugho ut th e r egi on (Ref. 120, p. 1; 121, p. 1; Section 3.1.1, Background Ground Water Monitoring Well S ample Table s and Figure 1 -3 of this HRS d ocumentation r ecord ). C hl or inated sol ven ts (e.g., TCE, PCE, and ca rbo n tet r achl or id e) ar e man- ma de com pou nds

co mm only used in co mm er cial/in du st r ial op er ati o ns suc h as dr y cle ani ng a nd m et al d eg r easi n g, wh ile o ther

co nt amina nts su ch as cis- 1,2 -D CE ar e c om mon br eak down prod ucts of P CE and T CE ( Re f. 19 , pp. 1-5 ; 120, p. 1; 121, p. 1 ). T he Keyst o ne C orr i do r G ro und W ater Contamination i s l o cated in a heavily developed area consisting of industrial, commercial, and residential land, where a variety of past industrial and commercial activities could have resulted in the ground water contamination and where some contamin ated properties have been identified ( Ref. 129,
pp

. 1-3 and Figure s 1- 3 and 1

- 4 of this HRS documentation record ). IDEM has m ade sig nif ic a nt eff or ts to i d e nt ify the sp eci f ic sour ce ( s) of gro und w ater co nt ami nati o n th rou ghCE RC LA SI and E SI inv e st i gati o ns (Ref. Section 2.2.1, Level of Effort, of this HRS d ocumentation r ecord ). So ils con tai ning PCE and TCE contamin ati on ar e pr esent in some po ss ib le sour ces as discu ss ed in the Description of Other Possible Sources Section of the HRS documentation record . A plume of chl or in ated V OC contamin ati on i s ill ustr ated in Figure 1-3 of the HRS documentation record

. Due to the c omplex g eology and high number of known and potential sources of chlorinated

v olatile organic compounds in the project area, it is not feasible to directly link any source to the contaminant s encountered in the plume (Ref. 7, p p

. 3, 5 ; Figure 1

- 4 of this HRS documentation record; Description of O ther Possible Sources Section of this HRS documentation record ).

T h e following table lists the hazardous substances associated with the Keystone Corridor Ground Water Contamination.

Ha za rd o us Sub s ta nce Tab le

Hazardous Substances Quantity R ef erenc es

T et r ac h l oro e t h e n e ( P C E )

Tr ic hl oro et hene (TCE)

Cis- 1, 2- Di chl oro ethene ( Cis 1, 2-DCE)

Vinyl Chl or ide (VC) U nk n o w n

U nk nown (d egrad ati o n pr od u ct

o f PCE)

U nk nown (d egrad ati o n pr od u ct

o f PCE)

U nk nown (d egrad ati o n pr od u ct

o f PCE) R e f

. 1 9
, pp

. 1

- 5 ; 42
, pp

. 1

- 69 ; 43
, pp . 1- 21 ; 121, p. 1 ; Se ction 3. 1.1 of this HRS d ocumentation r ec ord36 3. 2 WASTE CH AR ACTERISTI CS

3.2. 1 TOXIC IT Y/ MOB ILI TY

T he fo ll owi ng to xici t y, m ob il it y and c ombi ned to xici ty/m ob ili ty f act or va l ues have b een a ss i gned to th o se su bs tanc e s pr esent in t he ob se r ved r eleas e, w hichha ve a c o ntai nme nt va lue gr eater t han 0.

H a z a r d o u s S ub sta nc e So u r c e No

. (an d/ o r Obse rv ed Release) T ox icity F act o r Value M ob i l ity F act o r Value Do e s H a z

. S ub s t a n c e M eet Obse rv ed Relea se by Ch emi ca l A na lysi s? (Y /N) T ox icit y / M ob il it y (Ref. 1, Ta ble 3-9) R e f e r e nc es

T C E O b s e rv ed Relea se 1, 00 0 1 Y 1, 00 0 R e f

. 1
, S e cti o n 3

. 2

. 1

. 3
, p

. 76; 2, p. 10

Ci s

- 1
, 2

- D C E O b s e rv ed Relea se 1, 0 00 1 Y 1, 0 00 R e f

. 1
, S e cti o n 3

. 2

. 1

. 3
, p

. 76; 2, p. 6

PCE Obse rv ed Releas ed 100 1 Y 100 Ref. 1, Se cti o n 3.2.1.3, p. 76; 2, p. 8

V in yl Ch lor id e Obse rv ed Relea se 10, 00 0 1 Y 10, 00 0 Ref. 1, Se cti o n 3.2.1.3, p. 76; 2, p. 12

A ll h aza rdo us substan ces th at m eet the cr ite r ia for an ob se rv ed r elea se by chem ic al anal ys is to one or m or e aquifer s

un derlying the sour ce (s) at the s ite, rega rd le ss of the aquif er

b ei ng ev al ua te d, are a ss ign ed a m ob ili ty f act or value of 1 (Ref. 1 , Secti on 3.2.1.2 , p

. 75).

Contaminant char acte rist ic valu es for h aza rdo us substan ces fo un d in an ob serv ed r elea se to t he combined aquif er

wer e deriv ed from the Supe rfu nd Chem ical Data Mat rix (Ref. 2
, pp . 5- 12 ). The h aza rdo us s ub s ta n ce with the highes t tox ici ty/m ob il it y f act or value av aila b le to t he g ro un d w ater migr ati on p at hway is vinyl chloride (1 0 ,000 ).

Tox ic i ty /Mo bili ty Fa ctor Val ue: 10, 0 00 ( Re f. 1 , Sec tion 3.2

. 1.3 , p. 76)

3.2. 2 HAZARDOUS WASTE QUANTITY

S o u r ce N o. Source Type Source Hazardous Waste Quantity

1 Other Unknown, but >0

T he Keyst o ne C orr i do r Ground W ater Co nt ami nati on site has b een sc or ed as a site co ns i st i ng of a g ro und w ater plume from commingled contamination w ith no i de nt ified sour ce. A cc ord ing to Sec tion 2.4.2. 2 in the HRS (Ref. 1
, p. 66)
, if any ta r get fo r the mig r ati on p at hway is subj ect to L evel I (or L evel II ) c o ncent r ati o ns and the hazardous constituent quantity is not adequately determined
, as sign ei t her t he value from Tab le 2- 6 ( Re f. 1
, p

. 6 5) o r a value of 100
, whic hever is gr eate r, as the haza rdo us w aste q uan tity f act or va lu e fo r that p at hwa y. B ecause Lev el I

co ncent r ati on s were pr esent in a dr inking w ater we ll (Ref. Secti on 3.3.2. 2 of this H RS docume ntati on rec ord ), a haza rdo us wa ste qua nti ty f act or v alue of 10 0 is ass ig ned fo r the g ro und w at er p at hway.

Ha za rd ous Waste Quantity Fa c to r Va lue: 100 ( Re f. 1 , Sec tion 2.4

. 2.2 , p. 66 )37 3.2. 3 WASTE CH ARA CTERIS TI CS F AC TOR CATE GO RY VA LUE

As sp eci f ied in the HRS (Ref. 1 , Secti on 3.2.3 , p. 76) , the Haza rdo us Was te Quantity Fact or Val ue of 10 0 w as

mu lti p lied by the hi gh est Tox ici ty/ Mob ili ty Va lue of 10,000 , re su lt ing in a prod u ct of 1,0 0 0,00 0 (1

. 0E +06). Bas ed on thi s prod u ct, a Was te Ch ar acte risti cs Fact or C ate gory Val ue of 32 w as assi gn ed from Tab le 2-7 of the HRS (Ref. 1
, Secti on 2.4.3.1 , p

. 6 6)

.

Utiliz ing vinyl chloride which h as the hi gh est Tox ici ty/ Mob ili ty Fact or Val ue of the su bs ta nces li sted in Secti on 3.2. 1 of th is HRS do cumen tati on r ec ord :

Tox ic i ty /Mo bili ty Fa ctor Val ue: 10, 0 00 Ha za rd o us Waste Quantity Fa c to r Va lue: 100

Tox icit y /Mobili ty Fa c tor Value (10
, 000) X Hazardo us Was te Quantity Factor Val ue (100) = 1,0 0 0, 0 00 = 1 X 1 0 6

Waste Ch aract eri st ics Fa ctor C at e go ry Va lue: 3 2 ( Re f. 1 , Ta ble 2-7, p. 66)

3. 3 T AR GE TS

G ro un d w ater us age is high in t he vicin it y of the ground water plume (Ref. 10 6, p. 4 ; Figure 1

- 2 of this HRS documentation record ). The City of Indiana po lis’ Fall Creek mun ici p al w el ls, as w ell as pr iv ate w el ls in the ar ea,

u tilize ground water from the combined aquifer (Ref. 116, pp. 22

- 23; 135, pp . 1- 26). The pr imary ta rg ets are Indiana po li s’s Fa ll Creek mun ici p al w el ls FC2, FC5, FC7, FC8, FC 11 , FC 17 , FC18, FC19, FC20 and FC21

. Cu rr ently FC 2 is subj ect to Lev el I c ontamin ati on. The remaining m un ici p al w el ls are su bj ect to po te n tial contamin ati on. There are 123,264 peop le kn own to be u tiliz ing th e w ater from these w el ls (Ref. 106 , pp.1-3 ; Section 3. 3 .2 of th is HRS documentation record ).

3. 3. 1 NE AR E ST WE LL

Samp le IDs: E2 SG1 (Municipal well FC2) Lev el of Contamin ati on (I
, II , or po te n tial ): Lev el I If po te n tial contamin ati on, dis ta n ce from sour ce i n mi le s: Not A pp lica b le

Samp les E2 SG1 and E2 SG2 (dup licate of E2 SG 1) were ob tai n ed from Mun ici p al W ell FC2 on Novemb er 15
, 201 1.Th e w ater in Mu n ici p al W ell FC2 was fo un d to c on ta in vinyl chloride a bo ve the background level and above the ca n cer r isk screening concentration (Ref. 2
, pp

. 7 , 12 ).

As sp eci f ied in the HRS (Ref. 1
, Tab le 3- 11 , p. 77 ), if one or m or e dr inking w ater wells are su bj ect to Lev el I

con ce ntr ati ons a Nea rest W ell Fact or Val ue of 5 0 is a ss igned. Lev el I c oncentr ati on s have b een do cumen ted in the
g roun d w ater of FC2 (Ref. Secti on 3. 3.2. 2 of th is HRS documen tati on r ec ord ).

Ne a re s t Well Fa c to r Va lue: 5 0 ( Re f. 1 , Ta ble 3- 11 , p. 77)38 3.3.2 POPU LA TI ON

3.3.2 .2 L evel I Concentrati o ns

One (1) mun icipal w ell (F C 2) contains Level I concentrations of vinyl chloride . The well draws water from the combined aquifer ( Ref 7, p . 2). The number of people served by this municipal well ( 9 10 people) is calculated below.

The f oll owing f ac ts w ere acquired to calc u late the nu m ber of people s er v ed by the Fa ll Cre ek W ell Field:

The annual pumpage of drinking water in gallons was obtained from Reference 100.

The Fall Creek Treatment Plant is a blended system (Ref. 117, p. 1). In 2011, the Fall Creek system pumped 5,784,900,000 gallons (5784.9 million gallons) from the surface water intake and 1,559,800,000 gallons (1,559.8 million gallons) from the municipal wells for a total of 7,344,700,600 gallons with standby water available from other treatment plants within the Citizens Energy Group service area (Ref. 102, pp. 21, 23; 117, pp. 1 -3 ; 14 4 ).The percentage of population served by each sour ce is calculated by dividing the annual pumpage of each source (as shown below) by the total annual pumpage (7,344,700,600) in gallons for the entire Fall Creek system. Note that the surface water intake supplies 78.75 percent of total gallons pumped in 2011. Two examples showing this calculation are shown in Reference 79, page 259 for FC2 and FC11. The percentage of drinking water supplied by each source is shown in the table below using the calculation mentioned above.

The num ber of people s er v ed by all of Cit izens W ater T rea tm ent f

ac i lities is 873,590 (Ref. 106, pp. 1, 3). The Fall C reek Treatment Plant su pplies 14.11% of the people in 2011( Ref. 106, p. 3). A ccordi ng to C itiz ens Energy Group
, 99.61% of the con n ections are re s ide n tial usage (Ref. 106, p. 3). Th ere f ore the num ber of people s er v ed by the Fall C reek M u nicipal w ells is calculated by th e f oll ow ing eq u ati on : 873, 5 90 x 0 .1411 eq u als 12 3, 264 (plus or minus 10%) people (Ref. 106, pp.1, 3).

Si n ce FC 17 h as been taken out of prod u ctio n, th ere are only nine (9) ground water wells th at su pp ly water from th e Fall C re ek Treatment Plant beca us e mun icipal w ell FC 17 h as been re s tricted/d is co nti nued (Ref. 106, p . 4; 139, p. 1 ).

As di s cu ss ed in HRS Section 3.3.2, Pop u latio n, if n o s in g le w ell or intake con trib utes m ore than 40 perce nt of the system ’s total w ater su pp ly, the pop u lation s er v ed by a ble n ded s ys tem is t o be ap portio n ed eq u ally among th e w el ls or intakes . Since the surface water intake, which is part of the Fall Creek System supplies over 40% (7 8. 75 %), a percentage of people was calculated for each source

. The number of people supplied by each source was calculated by multiplying the population served by the Fall Creek Treatment Plant (12 3,264 people) by the percentage calculated for each sour ce as shown above. By using this calculation, the following number of people was attributed to each source

. People Served Table

Well ID Annual pumpage of drinking water in
t housands of gallons (Ref. 106, p. 4 ) Percentage of Population Served per Each Well Number of People Served Per Each Well

Intake 5,784,900 78.746194 97
, 085 FC2 54,200 0 .737779 910 FC5 91,100 1.240087 1,529 FC7 366,500 4.988933 6,151 FC8 52,300 0 .711927 878 FC11 355,500 4.839197 5966 FC17 0 0 0 FC18 1,900 0 .025864 3239 Well ID Annual pumpage of drinking water in
t housands of gallons (Ref. 106, p. 4 ) Percentage of Population Served per Each Well Number of People Served Per Each Well

FC19 48,700 0 .662922 817 FC20 269,300 3.665811 4,520 FC21 320,400 4.361403 5,377 Total 7, 344,800 gallons 100 123,264

Note: T he number of persons served by each source was rounded to the nearest whole number.

F C2 Lev el I Ta ble

Lev el I S ampl es Aquif er P op u lati on Referen ces

E2 SG 1DL
, E2 SG 2
, E2R 05 Combined 910 See calc u lati o n in 3.3.2. 2 a b ove

T he sum of the pop ulati on se r ved by Mu nici p al W ell FC2 (9 10 ) w as m u lti p lied by 1 0 fo r a prod uct of 9, 100 ( Re f. 1, Secti on 3.3.2.2 , p . 7 7)

. Lev el I Co ncen tr at io ns Fa c to r Va lue: 9,100

3.3.2 .4 Pot en tial Con ta min at i on

Po te n tial contamination w as c alc u lated for th is HRS do cumentation r ec ord

. The following mu n ici p al w ells (FC5, FC7, FC8, FC 11 , FC18, FC19, FC20 and FC21 ) are considered to be su bj ect to po te n tial contamina ti on ( Ref. Figure 1

- 2 of this HRS documentation record; 122, p. 1; 130, p. 1 ). These wel ls dr aw

w ater fro m the combined aquifer; the same as FC2 (Ref. 7
, p. 2 , 31, 32, 34, 35 ).

The ce n ter of the Ke ys tone Co rr i do r Gro un d W ater Contamin ati on is shown on Figure 1 -2 of this HRS documentation record

. From this po in t, the dis ta n ce in feet to each mun ici p al wel l w as cal cu lated ( Fi gu re 1-2 ; Ref. 122, p. 1; 130, p. 1; 141 , p. 2). T he m ea surements li s ted b el ow dep ict those distan ce s

. The dis ta n ces to each

mun ici p al w ell al ong wi th the c orr es po nding nu mb er of pe op le se rv ed w as en te r ed in to Tab le 3- 12 of 4 0 CFR, Part 30 0 (Ref. 1
, p

. 78). The fo ll owing valu es for each mun ici p al wel l were deriv ed fro m Tab le 3- 12:

P ot ential Contamination Table

Distance Category (miles) Municipal wells Distance From Center of Plume to Municipal Well (feet) ( Fi gu re 1-3 of th is HRS do cumenta ti on

r ec ord) Number of People Served Per Each Well Outwash aquifer Number of People Served Per Each Well Karst aquifer Distance

Weighted Population Value: Karst aquifer Distance

Weighted Population Value: Outwash aquifer Ref.

0 to 1⁄4 FC5/FC8 (Karst) 519/611 NA 1,529 + 878= 2,407 1,633 NA 7, pp. 2, 3, 31, 32, 35; 141, p. 240 Distance Category (miles) Municipal wells Distance From Center of Plume to Municipal Well (feet) ( Fi gu re 1-3 of th is HRS do cumenta ti on

r ec ord) Number of People Served Per Each Well Outwash aquifer Number of People Served Per Each Well Karst aquifer Distance

Weighted Population Value: Karst aquifer Distance

Weighted Population Value: Outwash aquifer Ref.

1⁄4 to 1⁄2 FC7 (Karst) 1,471 NA 6,151 3,233 NA 7, pp. 2, 32, 34; 141, p. 2 1⁄2 to 1 FC11(Karst) 3,329 NA 5,966 2,607 NA 7, pp. 2, 3, 31; 141, p. 2 1⁄2 to 1 FC18, FC19, FC20 (Outwash) 3,802/4,564/5,184 32 + 817 + 4,520 = 5,369 NA NA 1669 7, pp. 2, 32, 35, 37, 38; 141, p. 2 1 to 2 FC21 (Outwash) 5,734 5,377 NA NA 939 7, pp. 2, 31, 35, 39; 141, p. 2 2 to 3 NA NA NA NA 3 to 4 NA NA NA NA

T hese va l ues are added ( 1,633 +3,233 + 2,607 + 1,669 + 939 = 10,081 )

. T he total of 10,081 is mult i plied by 0 .1 to obtain the distance

- weigh t ed populat i on value (Ref. 1, Section 3.3.2.4, p. 78)

.

The d ista nce-wei gh te d popu lati on v al ue was ca lcu lat e d as follows:

10,081 X 0.1 = 1,008.1 Pot en tial Con ta min at ion Fa c to r Va lue: 1,008

3.3. 3 RESOURCES

Resour ce us e of the combined aquif er

within the ta rg et distance lim it do es not include anyof the Resour ce Fact or s

. Theref or e, a Resour ce Fact or v al ue of 0 is assign ed (Ref. 1 , Secti on 3.3.3 , p. 78 ).

Re so urces Fa c to r Va lue: 041 3.3. 4 WE LL HE AD PROTEC TI ON AR EA

The en ti re g ro un d w ater pl um e lies with in the W ell h ead P ro tecti on Ar ea of the C it y of Indiana po li s’s Fall Cr eek W ell Fiel d (Ref

. 116, p. 4; 122, p. 1; 130, p. 1; Figure 1

- 2 of this HRS documentation record ). The wellhead protection area designation is in accordance with Section 1428 of the Safe Drinking Water Act and is consistent with the requirements of 327 IAC 8

- 4.1(the “Indiana Wellhead Protection Rule” ( Ref. 116, p. 4; Ref. 29 , p. 1, 2 ). Theref or e, the W ell h ead Pro tecti on Ar ea Fact or Val ue of 2 0 is a ss ign ed (Ref. 1 , Secti on 3.3.4 , p

. 78 ; 29 , pp

. 1 , 2 ; 122, p. 1; 130, p. 1 ; Fi gu r e 1-3 of this HRS docu men tati on recor d ).

Wellhe a d Pr ot ec tion Area Va lue: 20