HAZARD RANKING SYSTEM (HRS) DOCUMENTATION RECORD COVER SHEET

Name of Site: Beck’s Lake

EPA ID No.: IND 980904379

Contact Person

U.S. Environmental Protection Agency (EPA), Region V: Patrick Hamblin , National Priorit ies List Coordinator 77 West Jackson Boulevard, Mail Code: SR -6J Chicago, Illinois 60604 (312) 886-6312

Site Investigation: Mark Jaworski Indiana Department of Environment Management 100 Senate Avenue Indianapolis, Indiana 46204 (31 7) 2 33-2407

Pathways, Components or Threat s Not Scored

Ground Water Pathway: The ground water migration pathway has not been scored because , b ased on information available at this time, evaluation of the ground water migration pathway would not significantly affect the listing decision.

Surface Water Pathway: The Surface Water Pathway has not been scored at this time because , b ased on information available at this time, evaluation of the surface threat pathway would not significantl y affect the listing decision.

Air Pathway: The air migration pathway has not been scored because , b ased on information available at this time, evaluation of the air migration pathway would not significan tly affect the listing decision

.1 HRS DOCUMENTATION RECORD

Name of Site: Beck’s Lake Date Prepared: May 2013

EP A Region: V

Street Address*: Intersection of Washington and Falcon Street s City, County, State, Zip Code: South Bend
, Saint Joseph County, Indiana , 46619 (Figure 1) (Ref. 3, p . 1)

General Location in State: North -c entral portion of Indiana in the C ity of South Ben d (Ref. 3, p. 1) Topographic Map: U.S. Geological Survey 7.5

- Minute Series Topographic Map of South Bend West, Indiana, Quadrangle , 196 9, P hotorevised 198 6 (Ref. 3, p. 1)

Latitude *: 41 ○ 40 ’ 35.69 ” North (Ref. 3, p. 1; Ref. 4A , p. 1 ; 4B; Figure 2) Longitu de *: 86 ○ 17 ’ 51.05 ” West (Ref. 3, p. 1; Ref. 4A , p. 1 ; 4B; Figure 2 )

The latitude and longitude listed above mark the approximate location of surface soil sample S6 colle c ted

from LaSalle Park Homes (Ref. 4 A; 4B; Figure 2 ).

* The street address, coordinate s, and contaminant locations presented in this HRS documentation record identify the general area the S ite is located. They represent one or more locations EPA considers to be part of the S ite based on the screening information EPA used to evaluate the Si te for NPL listing. EPA lists national priorities among the known “releases or threatened releases” of hazardous substances; thus,
the focus is on the release, not precisely delineated boundaries. A S ite is defined as where a hazardous

substance has been “deposited, stored, disposed, or placed, or has otherwise come to be located.” Generally, HRS scoring and the subsequent listing of a release merely represent the initial determination that a certain area may need to be addressed under the Comprehensive Environmental Response
, Compensation, and Liability Act (CERCLA). A ccordingly, EPA contemplates that the preliminary description of facility boundaries at the time of scoring will be refined as more information is developed

as to where the contamination h as come to be located.

Scores

Groundw ater Migration Pathway - Not Scored Surface Water Migration Pathway - Not S cored Soil Exposure Pathway - 100.00

Air Migration Pathway - Not S cored

HRS SITE SCORE 50.002 WORKSHEET FOR COMPUTING HRS SITE SCORE

S S 2 1. Groundw ater Migration Pathway Score (S gw ) (from Table 3-1, line 13) NS

---
2a. Surface Water Overland/Flood Migration Component (from Table 4-1, line 30) NS

---
2b Groundwater to Surface Water Migration Component (fr om Table 4- 25, line 28) NS

---

2c. Surface Water Migration Pathway Score (S sw ) (enter the larger of lines 2a and 2b as the pathway score) NS

---

3. Soil Exposure Pathway Score (S s ) (from Table 5-1, line 22) 100.00 10,000.00

4. Air M igration Pathway Score (S a ) (from Table 6-1, line 12) NS

---

5. Total of S gw 2 + S sw 2 + S s 2 + S a 2 10,000.00

6. HRS Site Score 50.00 Divide the value on line 5 by 4 and take the square root.

Note: NS = Not Scored3 TABLE 5

- 1

– SOI L EXPOSURE PATHWAY S CORESHEET
Factor Categories and F actors Maximum Value Value Assigned
Resident Population Threat Likelihood of Exposure: 1. Likelihood of Exposure 550 550 Waste Characteristics: 2. Toxicity (a) 10
, 000 3. Hazardous Wa ste Quantity (a) 10 4. Waste Characteristics 100 18 Targets: 5. Resident Individual 50 50 6. Resident Population: 6a. Level I Concentrations (b) 8 9 0 6b. Level II Concentrations (b) NS 6c. Population (lines 6a + 6b) (b) 8 9 0 7. Workers 15 NS 8. Resources 5 0 9. Terrestrial Sensitive Environments (c) 0 10. Targets (lines 5 + 6c + 7 + 8 + 9) (b) 940 Resident Population Threat Score 11. Resident Population Threat Score (lines 1 x 4 x 10) (b) 9,306,000 Nearby Popula tion Threat Likelihood of Exposure: 12. Attractiveness/Accessibility 100 NS 13. Area of Contamination 100 NS 14. Likelihood of Exposure 500 NS NS Waste Characteristics: 15. Toxicity (a) NS 16. Hazardous Waste Quantity (a) NS 17. Waste Characteristics 100 NS Targets: 18. Nearby Individual 1 NS 19. Population Within 1 Mile (b) NS 20. Targets (lines 18 + 19) (b) NS Nearby Population Threat Score 21. Nearby Population Threat (lines 14 x 17 x 20) (b) NS Soil Expos ure Pathway Score: 22. Pathway Score c (S s ), [lines (11+21)/82,500, Subject to max of 100] 100 10 0 .00

Notes:

a Maximum value applies to waste characteristics category
b Maximum value not applicable

c Do not round to nearest integer NS = Not scoredFigure 1 Area Location Map

750 E. Bunker Ct., Suite 500

Vernon Hills, Illinois 60061 WESTON SOLUTIONS, INC Prepared By:

EP-S5-06-04 Prepared for: U.S. EPA. REGION V Contract No: TDD: S05-0008-1209-003 DCN: 1982-2A-BBRT Beck's Lake South Bend, Indiana SITEJ:\CAD93\000\08012.dwg, 4/16/2013 4:21:00 PMFigure 2Source 1 and AOC ABeck's Lake HRSSouth Bend, St Joseph County, IndianaContract No: EP-S5-06-04TDD: S05-0008-1209-003DCN: 1982-2A-BCEL0 300Feet

FILE: D:\Beck_Lake_HRS\mxd\F2_AOC-A_Source1.mxd 11:07:10 AM 3/21/2013 wojdakonLegendAOC Sample Locations(S06, S08, and S14)Source 1 Sample Locations(S51, S52, S53, S54, and S55)Image Source: ESRI Bing MapsPrepared for:U.S. EPA REGION VPrepared By:WESTONSOLUTIONS, INC750 E. Bunker CourtSuite 500Vernon Hills, Illinois 60061Refs: 5, PP. 18, 2716 REFERENCES

1. U.S. Environmental Protection Agency (EPA). H azard Ranking System
, Final Rule
, 55 Federal Register (FR) 5153 2 . December 14, 1990. 138 p ages. An electronic copy of the HRS is avai lable at: http://www.epa.gov/superfund/sites/npl/hrsres/index.htm#HRS Rule

Note: A complete copy of the H azard R anking S ystem , Final Rule, can be obtained atthe Regional docket upon request.

2. EPA. Superfund Chemical Data Matrix (SCDM), SCDM Data Versions: Jan. 27 , 2004 and March 31, 2012. Excerpt. 4 pages. A complete copy of SCDM is available at : http://www.epa.gov/superfund/sites/npl/hrsres/tools/scdm.htm

.

3. U.S. Geological Surve y (USGS). 1969. 7.5- Minute Series Topographic Map: South Bend West
, Indiana, Scale 1:24,000. Photorevised 1986 . 1 page

4a. Weston Solutions Inc. (WESTON). Longitude and Latitude Calculations for Beck’s Lake Site by Megan Abbot, October 31 , 201 2. 1 page.
4b. Weston Solutions Inc. (WESTON). Longitude and Latitude Location for Sample S6 on U.S. Geological Survey (USGS). 19 69 . 7.5

- Minute Series Topographic Map: South Bend West , Indiana, Scale 1:24,000. Photorevised 1986. 1 page.

5. Indiana Departmen t of Environment al Management ( IDEM ). Expanded Site Inspection 2 R eport
, Beck’s Lake Site
, St. Joseph County, Indiana. December 20, 2009. 289 pages.

6. Ecology and Environment

. Screening Site Inspection Report, The Beck’s Lake Site South Bend, Indiana. Ju ne 7, 1989

. 76 pages.

7. Pollution Control Systems Incorporate d , 1982, Analytical Results to Mr. Gerald J. Budzin of Bendix, February 15, 1982. 3 pages.

8. Susanne Buthman, Preliminary Assessment for Beck’s Lake site, ERRIS Executive Summary, Indiana. May 31 , 1985. 1 page.

9. IDEM. Brownfield Environmental Assessment Report for LaSalle Park/Beck’s Lake, South Bend
, Indiana. November 14, 2002. 565 pages.

10. IDEM. Reassessment Report for LaSalle Park/Beck’s Lake, South Bend, Indiana. March 9, 2007. 166 pages.

11. I DEM, Affidavit prepared by Timothy R. Johnson, State Cleanup Section, IDEM. October 29, 2012. 1 page.

12. IDEM, Sampling Work Plan for Expanded Site Assessment prepared by Tim Johnson of IDEM. October 1, 2009. 19 pages.7 13. IDEM, Sample Field Data Sheet, Beck’s Lake site, South Bend, Indiana. October 5 and 6, 2009. 40
pages.
13a. IDEM, Affidavit prepared by Timothy Johnson, IDEM. February 19, 2013. 1 page

14. IDEM, Arsenic Concentration Map for Beck’s Lake, South Bend, Indiana. Prepared by Kim Vedder. January 12, 2010. 1 page.

15. U.S. EPA, Contract Laboratory Program, Statement of Work for Inorganic Analysis, ILM05.3. March 2004. 93 pages.

16. U.S . EPA, ILM05.3 to ILM05.4 Summary of Changes. December 1, 2006. 5 pages.

17. U.S. EPA, CLP Analytical Results for Beck’s Lake Site, SDG ME2QTO, ME2QW4, SDG ME2QX7. November 17, 2009. 154 pages.

17A. Weston Solutions, Inc. , Percent Moisture Calculations performed by Omprakash S. Patel, January 25, 2013. 1 page.

17B. Weston Solutions, Inc., Sample Quantitation Limit Calculations performed by Omprakash S. Patel, January 25, 2013. 2 pages.

18. IDEM, 1938 Close-Up Aerial Photograph for Beck’s Lake, South Bend, Indiana. 1 page.

19. IDEM, 1951 Close-Up Aerial Photograph for Beck’s Lake, South Bend, Indiana. 1 page.

20. IDEM, 1 957 Close-Up Aerial Photograph for Beck’s Lake, South Bend, Indiana. 1 page.

21. WESTON Solutions Inc., Map showing 200

- feet radius distance from sample locations S6
, S8 and S14. October 30, 2012. 4 page s.

22. St. Joseph County, Parcel Information for LaSalle Park Homes, 1 page

23. Hardin g Lawson Associates, Tier II Criteria Comparison, Voluntary Site Investigation, AlliedSignal Industrial Complex, South Bend, Indiana. October 1999. 661 pages.

24. History of New Carlisle Test Facility, downloaded from Web on Febru ary 19, 2013. 1 page.

Link 

### http://www.bosch.us/content/language1/html/7666.htm.

25. Elkhart County and St. Joseph County, Indiana GIS Website, Parcel information for area east of LaSalle Park, Elkhart County and St. Joseph County. 1 page.

26. Fax Transmittal f rom Gloria Buckhanon of LaSalle Park Homes to Mark Jaworski, of IDEM. January 29, 2012. 2 pages.8 27. IDEM, Letter from Mark Jaworski regarding addresses located on North Falcon Street South Bend, Indiana , with 4

- page attachment . 5 pages.

28. Toeroek Associates , Inc. Letter with attachments to Mike Rafati, U.S, EPA Region 5. Subject: Title Search – Beck’s Lake Site; Follow Up. January 31, 2013. 5 pages.

29. Weston Solutions, Inc., Area Calculation for Source 1 performed by Omprakash S. Patel, March 26, 2013. 2 page s.9 

### 1.0 SITE DESCRIPTION

The Beck’s Lake site consists of a landfill and contaminated soil located at and near the intersection of Washington and Falcon Streets on the northwest side of South Bend, Indiana, and adjacent to LaSalle Park (Ref. 5, p.10)

. Portio ns of the current LaSalle Park were used as a dump and landfill from about 1938 through the mid -1950s (Refs. 5, p. 12; 6, p. 9) . Numerous companies and individuals, including Bendix Corporation, reportedly dumped a variety of materials containing hazardous substances at this location (Ref. 5, pp. 12, 13, 284 t hrough 289)

. Waste materials included, but were not limited to: asbestos, plating wastes, solvents, paint wastes, oils and sludges and foundry sand (Ref. 5, pp. 285-289) . Foundry sand and hydroxide

slu dge contained, among other contaminants, arsenic (Refs. 5, p. 28 8; 7, pp.1 -3) . Aerial photographs from 1938 and 1951 appear to show fill material being dumped in the western half

of what is now LaSalle Park (Ref. 5, p.13).

The area surrounding LaSalle Park consists mostly of older single - and multi

- family residences in a typical urban setting (Ref. 5, p. 10, 12)

. Directly adjacent to LaSalle Park on the west across Falcon Street is a new complex of subsidized housing and apartments called LaSalle Park Home s (Ref. 5, p. 10, 12)

. The dumping area is evident on a 1951 historical aerial photograph of the area, extending to the edge of the partial road which is now Falcon Street and some truck paths extending beyond the edge of the partial road into the area th at is now part of the LaSalle Park

Homes (Ref. 19, p. 1) . Therefore, it appears from historical aerial photographs that before the LaSalle Park Homes were built, the waste that was deposited in the Beck’s Lake landfill could also have been deposited on the current LaSalle Park Homes property.

The area of concern includes the dump area and the area immediately surrounding LaSalle Park,

to the west and south

- southwest where levels of arsenic elevated above background levels were identified during the 2001 Brownfields Environmental Assessment and the 1996 i nitial Expanded Site Inspection (ESI) for the site (Ref. 5, p. 10; and Table 6 of this HRS documentation record). Results of the 2009 ESI (the ESI 2) included three soil samples at the

LaSalle Park Homes with arsenic concentrations above background and above health

- based10 

### benchmarks (Table 10 of this HRS documentation record) . The site score incorporates Level I contamination in the soil exposure pathway based on these three soil samples at the LaSalle Park

Hom es residential properties.

1.1 PREVIOUS INVESTIGATIONS

Beck’s Lake was entered in the Comprehensive Environmental Response, Compensation, and Liability Information System ( CERCLIS ) in April 1984 (Ref. 5, p. 8). A Preliminary Assessment (PA) was complete d in 1985 by the Indiana State Board of Health (Ref s . 5, p. 8 ; 6, p. 73; 7 , p. 1; 8, p.1 ). A Screening Site Inspection (SSI) was conducted on April 20, 1988 by Ecology and Environment, a U.S. EPA contractor (Ref. 6, p. 7 ). An ESI was conducted by U.S.

E PA on March 8, 1996
, resulting in a No Further Remedial Action Planned (NFRAP) designation (Ref. 5, p p . 8). Based on the findings of a Brownfield s Environmental Assessment

that was conducted in 2001 by the Indiana Department of Environmental Management (I DEM)
,
t he U .S. EPA gave approval to reopen the S ite and a Site Reassessment was conducted on June
13, 2003 (Ref. 5, pp. 8, 9). Following the Site Reassessment , a n ESI 2 was conducted at Beck’s

Lake (Ref. 5, pp. 8, 9).

The SSI was conducted to determine whether Target Compound List ( TCL ) compounds or Target Analyte List ( TAL ) analytes were present at the S ite (Ref. 6, p.7) . The SSI included

collection of one subsurface soil sample near the man

- made hill at the park , one surface soil sample from the west side of the property, and three sediment samples from within Beck’s Lake (Ref. 6, p. 15) . T he samples were analyzed for U.S. EPA TCL compounds by Cenref Labs, Brighton, Colorado, and TAL analytes by Post Buckley Schuh & Jernigan of Orlando, Florida (Ref. 6, p p . 15, 17 ). TCL compounds and TAL analytes were detected in soil samples at concentrations exceeding background levels (Ref. 6, p. 25) . Specifically, fluoranthene was

detected at a concentration of 26,000 micrograms per kilogram ( μg /kg ), pyrene was detected at
21,000 μg /kg, chrysene was detected at 14,000 μ g/kg, chromium was detected at 34 milligram per kilogram ( mg/kg ), lead was detected at 634 mg/kg, and manganese was detected at 957 mg/kg (Ref. 6, p. 25).11 

### I n October 2001
, IDEM collected six surface soil samples from the property, four surface soil samples from private properties , three sediment samples from Beck’s Lake, three surface water samples from Beck’s Lake , and one off- property background surface s oil sample (Ref. 9, pp. 17 - 19) as part of a Brownfields Environmental Assessment. Soil and sediment samples were analyzed for volatile organic compounds (VOCs), semi

- volatile organic compounds (SVOCs), pesticides/polychlorinated biphenyls (PCBs), metals and cyanide by U.S. EPA Contract Laboratory Program ( CLP ) laboratories (Ref. 9, p. 20) . Soil and sediment samples were analyzed for VOCs, SVOCs, and pesticides/PCBs by Envirosystems Inc. of Columbia , Maryland (Ref. 9, p.20) . Surface water organic samples were analyzed by SHEALY in California (Ref. 9, p. 20)

. The inorganic s (metals and cyanide) were analyzed by Chemtech Consulting Group, Englewood,
New Jersey (Ref. 9, p. 20) . Arsenic w as detected in several soil/sediment samples at
concentrations ranging from 4.8 mg/kg to 20.9 mg/kg exceeding the IDE M Risk B ased Closure

Residential Default Closure Level of 3.9 mg/kg (Ref. 9, pp.21, 35, 36 ).

In June 2003, IDEM conducted a Site Reassessment of the LaSalle Park/Beck’s Lake S ite (Ref. 10, p.10). During the r eassessment , 22 surface soil samples (including one potential background soil sample and one duplicate ) were collected (Ref. 10, pp. 16, 17). The samples were analyzed

for metals by Ceimic Corporation , Narragansett, Rhode Island (Ref. 10, pp. 62, 63) . Metals exceeding the site

- specific background sam ple concentrations by three times include a rsenic,

lead , and chromium (Ref. 10, p. 26 ).

In Oct ober 2009, 36 surface soil samples ( including six background soil samples ) were collected

from Beck’s Lake and surrounding residential properties (Ref. 5, p. 15) . Soil samples were analyzed by EPA CLP laboratory, A4 Scientific located in The Woodlands
, Texas (Ref. 17, pp.
11, 12, 63 , 64, 1 09 , 1 10 ) . All samples were analyzed for metals and cyanide using CLP SO W ILM05.4 (Ref. 5, pp. 127, 128 )

. Surface soil sample S34 w as mistakenly identified as background sample in the 2009 ESI 2 Report (Ref. 5, p. 18). Arsenic was detected in the soil samples collected from the LaSalle Park Home s area at concentrations exceeding three times the highest concentrations detect ed in the background surface soil samples (see Section 5.0.1 of this

HRS documentation record).12 

### 2.0 SOURCE DES C RIPTION

2.2 Source Characterization

Source Description: Source 1 – Landfill

Beck’s Lake property was used as a dump into the 1950s (Refs. 5, p. 12; 6, p.9). Historic aerial photographs indicate that dumping began at the Site as early as 1938 (Ref. 18, p. 1) . A 1984 103(c) notification to the United States Environmental Protection Agency (U.S. EPA) from Bendix Corporation, a manufacturing facil ity for the automotive/aerospace industry, revealed

that Bendix dumped a variety of hazardous wastes at the Beck’s Lake landfill until the mid

1950s (Ref. 5, pp. 12, 13, 285 through 289). Materials listed on the 103(c) notification and

attachments included , but were not limited to: asbestos, plating wastes, solvents, paint wastes, oils and sludges, and foundry sand. Foundry sand and hydroxide sludge contained, among other
contaminants, arsenic (Refs. 5, p. 288; 7 pp. 1

- 3). In a companion notification to t he St, Joseph County Health Department, Bendix indicated that i t , together with numerous other companies
and individuals, landfilled hazardous substances at Beck’s Lake (Ref. 5, p. 284) . During the
IDEM 2009 ESI 2, t he material at a depth of 2

- 5 feet in boring 5 is described to contain glass suggesting waste material within this depth (Ref. 13, p.38) . Observations made during this investigation revealed that t he subsurface material in the LaSalle Park was of non

- uniform color and contained glass and other unidentifiable foreign debris (Ref 13A. p.1). Aerial photo graph s from 1938 and 1951 appear to show fill material being dumped near the western half of the park near what is now the parking area/playground area for the community center at the park and to
the north toward Linden Road (Ref. 5, p. 13 ). T his area used to be a lake called LaSalle Lake (Ref. 5, p. 13) . No documentation could be found regarding what happened to the lake but the early aerial photo graph s show a faint outline of where the lake may have been (Ref. 5, p. 13).

The samples listed in Table 1 were collected from LaSalle Park during the IDEM October 2009 ESI 2 (Ref s . 5, pp. 15 , 1 8 ; 13, pp. 34-39 ; 14, p .1) (see Figure 2 of this HRS documentation

record ). S amples were collected from the 2 and 7 feet bgs subsurface horizon (Ref. 5, p. 18 ). Field logs are provided in Reference 13, pages 34 through 39. C hain

- of

- custody records are13 

### provided in Reference 17, pages 109 and 110. The locations of the samples collected from the

LaSalle Park are de picted on Reference 14, page 1. The description of waste samples is provided in Table 1 below and References 5, page 18; and 13, pages 34 through 39.

Table 1: Waste Sample Description

– October 2009 LaSalle Park Sample ID/

CLP ID Sample Location Depth ( feet bgs) Date Sampled References

S 51 / ME 2Q Y4 Taken from boring 1 west of backstop, west of basketball courts, at LaSalle Park 6

- 7 10/6/2009 Ref s . 5, pp. 18, 49, 197, 267; 13, p.34; 14, p. 1 S 52 / ME 2Q Y5 Taken from boring 2, playground area west edge LaS alle Park 2

- 4 10/6/2009 Ref s . 5, pp. 18, 5 1 , 197, 267; 13, p.35; 14, p. 1 S 53 / ME 2Q Y7 Taken from boring 3, depressional area on the north west edge of LaSalle Park 3

- 5 10/6/2009 Ref s . 5, pp. 18, 198, 267; 13, p. 36; 14, p.1 S 54 / ME 2Q Y8 Taken from boring 4 4

- 5 10/6/2009 Ref s . 5, pp. 18, 198, 267; 13, p.37; 14, p. 1 S 55 / ME 2Q Y9 Taken from boring 5 2

- 5 10/6/2009 Ref s . 5, pp. 18, 51, 198. 267; 13, p.38; 14, p. 1 S 56 / ME 2Q Y6 Taken from boring 2, playground area west edge LaSalle Park 2

- 5 10/6/2009 Ref s . 5, pp

. 18, 197, 267; 13, p. 39; 14, p.1 Notes: bgs = Below ground surface CLP = Contract Laboratory Program ID = Identification number



### Waste Sample Concentrations

The sample s listed in Table 2 were collected during the October 2009, ESI 2 of LaSalle Park (Refs. 5, p. 15; 14, p. 1 ). S amples were analyzed by EPA CLP laboratory, A4 Scientific
, The
Woodland, Texas (Ref. 17, pp. 101, 109, 110 ) . A ll samples were analyzed for metals and14 

### cyanide using CLP SOW ILM05.4 (Ref. 5, pp. 4, 56, 128 , 1 92 ; 17, p. 111 ). T he CRQL s are listed on page 93 of Reference 1 5 for Method ILM05.3. According to information presented on pages 1 through 5 for Reference 1 6 , the CRQL for lead and arsenic were not change d for

ILM05.4 and are the same as ILM05.3. The method detection limits and CRQL s are also listed on pages 45, 92, and 145 of Reference 17. The SQL for each analytical parameter listed in Table 2 was calculated and the calculations are presented in Reference 17B. Percent moisture for each sample was calculated and the calculations are presented in Reference 17A. The material at a depth of 2

- 5 feet in boring 5 is described to contain glass suggesting waste material within this depth (Ref. 13, p.38). The subsurface material in the LaSalle Park was of non

uniform color and contained glass and other unidentifiable foreign debris (Ref. 13A, p.1).

T he hazardous chemical constituents detected in the waste samples are summarized in Table 2

below.TABLE 2 : Analytical Results Waste Samples LaS alle Park – October 2009

Sampl e ID/ CLP ID Hazardous Substance Concentration mg/kg Percent Moisture CRQL/ MDL /SQL

(mg/kg) References

S 51 /2Q Y4 Cadmium 149 11.7 0.5 /0. 1 6 /0.19 Refs. 5, pp. 21, 191

- 195, 197 ; 14, p. 1; 15, p. 93; Copper 736 2.5/0

. 7/0.95 Lead 1,860 1 .0 /0.38/0.28 16, pp. 1

- 5; 17, pp. 99- 105

, 109, 111, 121, 145 ; 17A, p. 1; 17B, pp. 1, 2 Zinc 657 6 .0 /2.2/2.59

S 52 /2Q Y5 Cadmium 6.4 12.2 0.5 /0. 1 6 /0.19 Refs. 5, pp. 21, 191

- 195, 197; 14, p. 1; 15, p. 93; 16, pp. 1

- 5; 17, pp. 99- 105

, 109 , 111, 122, 145; 17A, p. 1; 17B, p p. 1, 2 Chromium 36.3 1 .0 /0.37/0.36 Copper 987 2.5/0

. 7/0.95 Lead 1,030 1 .0 /0.38/0.28 Nickel 53.9 4.0/1.2/1.49 Zinc 2,130 6 .0 /2.2/2.58 S 53 /2Q Y7 Cadmium 19.6 36.0 0.5 /0. 1 6 /0.19 Refs. 5, pp. 21, 191

- 195, 198; 14, p. 1; 15, p. 93; 16, pp. 1- 5; 17, pp. 99- 105

, 110, 111, 124, 145; 17A, p. 1; 17B, pp. 1, 2 Chromium 59.6 1 .0 /0.37/0.36 Copper 567 2.5/0

. 7/0.95 Lead 2,390 1 .0 /0.38/0.28 Nickel 206 4.0/1.2/1.49 Zinc 1,960 6 .0 /2.2/2.58 S 54 /2Q Y8 Cadmium 5.2 15.5 0.5 /0. 1 6 /0.19 Ref s. 5, pp. 21, 191

- 195, 198; 14, p. 1; 15, p. 93; 16, pp. 1 -5; 17, pp. 99

- 105

, 110, 111, 125, 145; 17A, p. 1; 17B, pp. 1, 2 Chromium 53 1 .0 /0.37/0.36 Copper 169 2.5/0

. 7/0.95 Lead 730 1 .0 /0.38/0.28 Nickel 38.7 4.0/1.2/1.49 Zinc 853 6 .0 /2.2/ 2.58 S 55 /2Q Y9 Cadmium 6.6 25.0 0.5 /0. 1 6 /0.19 Refs. 5, pp. 21, 191

- 195, 198; 14, p. 1; 15, p. 93; 16, pp. 1 -5; 17, pp. 99

- 105

, 110, 111, 126, 145; 17A, p. 1; 17B, pp. 1, 2 Chromium 39.7 1.0/0.37/0.36 Copper 271 2.5/0.7/0.95 Lead 1,010 1.0/0.38/0 .28 Nickel 55.1 4.0/1.2/1.49 Zinc 1,040 6.0/2.2/2.58 S 56 /2Q Y6 Arsenic 24.5 23.2 1 .0 /0.36/0.44 Refs. 5, pp. 21, 191

- 195, 197; 14, p. 1; 15, p. 93; 16, pp. 1 -5; 17, pp. 99

- 105

, 109 , 111, 123, 145; 17A, p. 1; 17B, pp. 1, 2 Notes: CLP = Contract La boratory Program CRQL = Contract Required Quantitation Limit

, the substance

- specific level that a CLP laboratory must be able to routinely and reliably detect in specific sample matrices. The CRQL is not the lowest detectable level achievable, but rather the level that a CLP laboratory should reliably quantify (Ref. 1, Sec. 1.1)

. ID = Identification number MDL = Method Detection Limit, the lowest quantity of hazardous substance that a method can detect reliably in either a sample or blank (Ref. 1, Sec. 1 .1).

15ID = Identification number MDL = Method Detection Limit, the lowest quantity of hazardous substance that a method can detect reliably in either a sam ple or blank (Ref. 1, Sec. 1.1)

. SQL = Sample Quantitation Limit, the quantity of a substance that can be reasonably quantified given the limits of detection for the methods of analysis and sample characteristics that may affect quantitation (e.g. dilution
, concentration) (Ref. 1, Sec. 1.1)

. mg/kg = milligram per kilogram

2.2.3 HAZARDOUS SUBSTANCES AVAILABLE TO A PATHWAY

Containment Description

Gas release to air: Not scored Particulate release to air: Not scored Release to ground water: Not score d Release via overland migration and/or flood: Not scored

2.4.2 HAZARDOUS WASTE QUANTITY

2.4.2.1.1. Hazardous Constituent Quantity

Description

The hazardous constituent quantity for Source No. 1 could not be adequately determined according to the HRS requirements; that is, the total mass of all Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) hazardous substances in the source is not known and cannot be estimated with reasonable confidence ( Ref. 1, Section 2.4.2.1.1). Th ere are insufficient historical and current data (Manifests, PRP records, State records, permits, waste concentration data, etc.) available to adequately calculate the total mass of all CERCLA hazardous substances in the source and the associated releases from the source. Therefore, there is insufficient information to evaluate the associated releases from the source to calculate the hazardous constituent quantity for Source No. 1 with reasonable confidence.

Hazardous Constituent Quantity Assigned Value: NS

2.4.2.1.2. Hazardous Wastestream Quantity

Description

The hazardous wastestream quantity for Source No. 1 could not be adequately determined according to the HRS requirements; that is, the total mass of all hazardous wastestreams and CERCLA poll utants and contaminants in the source is not known and cannot be estimated with reasonable confidence ( Ref. 1, Section 2.4.2.1.1). There are insufficient historical and current data (Manifests, PRP records, State records, permits, etc.) available to adequ ately calculate the total mass of all hazardous wastestreams and
1617 CERCLA pollutants and contaminants in the source and the associated releases from the source. Therefore, there is insufficient information to evaluate the associated releases from the source to calculate the hazardous wastestream quantity for Source No. 1 with reasonable confidence.

2.4.2.1.3. Volume

Description

The information available is not sufficient to evaluate source volume . A suff i cient number of samples were not collected that wo uld statistically represent the range of contaminant concentrations throughout the depth of the source, therefore, source volume is not scored (NS). As a result, the evaluation of hazardous waste quantity proceeds to the evaluation of area (Ref. 1, Section 2.4.2.1.3).

Sum (yd 3 /gal): Equation for Assigning Value (Ref. 1, Table 2-5):

Volume Assigned Value: NS

2.4.2.1.4. Area

Description

The area of Source 1 was calculated using the 5 samples collected in this source during the IDEM 2009 ESI 2: sam ples S51, S52, S53, S54 and S55 (Ref. 29).

Sum (ft 2 ): 141,750 Equation for Assigning Value (Ref. 1, Table 2-5): 141,750 / 3,400 = 41.691176

Area Assigned Value: 41.691176

2.4.2.1.5. Source Hazardous Waste Quantity Value

Highest assigned value assigned from Ref. 1, Table 2-5: 41.691176



### 2.0 SOURCE DES C RIPTION

2.2 Source Characterization

Source Description: Source 2 – Contaminated Soil

Please see Soil Exposure Pathway, Area of Observed Contamination A (AOC A) for

characterization of this sou rce.18 SUMMARY OF SOURCE DESCRIPTIONS

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

Overland/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

- 9)

1 41.691176 N NS NS NS NS NS

2 Unknown, > 0 N NS NS NS NS NS19 

### 5.0 SOIL EXPOSURE PATHWAY

5.0.1 General C onsiderations



### The area of observed soil contamination is documented in accordance with Section 5.0.1 of the HRS (Ref. 1, S ection 5.0.1). The area of observed soil contamination is delineated by the locations of soil samples documenting concentrations of hazardous substances at three times above background concentration or above sample detection limit s if the background is non

detect, and the area lying between those locations, minus the areas covered by impenetrable surfaces (such as houses, roads, and sidewalks) (Ref. 1, Section 5.0.1).

Letter by which this area is to be identified : A

Name and description of the area : Soil Samples S6, S8 and S14 collected from the LaSalle

Park Homes (Area of observed contamination A)

Location of the area, with reference to a map of the site : The area (surface soil samples S6, S8 and S15) is shown on Figure 2 provided with this HRS documentation r ecord

IDEM LaSalle Park/Beck’s Lake Expa nded Site Inspection Report 2

The investigation

- specific background soil sample s list ed in Table 3 were collected during the

IDEM October 2009, ESI 2 of LaSalle Park/Beck’s Lake (Ref. 5, pp. 8, 17, 18). The background soil samples for this investigation w ere collected from the residential properties away from

Beck’s Lake ( Ref. 5, p. 18) . The background soil samples w ere collected from the upper 6

inches of the soil horizon (Ref.5, p. 18)

. Th ese location s were chosen to represent background

conditions because : (1) the soil type at the background sample location s are similar to the soil
typ es at the locations of samples collected from Area of Observed Contamination ( AOC ) A; (2)

th ese s sampling location s are at a distance away from Beck’s Lake and appear to be minimally affected by operations at Beck’s Lake ; (3) samples were collected within same time period (October 5 and 6, 2009 ) , therefore, under the same weather condition s; (4) samples were

collected at the same depth of 0 to 6 -inch es ; (5) samples were collected by the same sampling

team and samples were collected in accordance with the ap proved Work P lan (Ref s. 5, p. 18; 12, pp. 1-19; 13, pp. 1-14).20 

### Background and contaminated soil samples were collected during the same sampling event, from the same type of soil (black to dark brown sandy loam or sandy soil ), by the same sampling team

and therefore using similar sampling procedures (Ref. 13 , pp. 5, 14, 24, 25, 26, 28, 29, 30 ). The background surface soil sample s w ere collected in accordance with the approved 2009 IDEM

ES I 2 Work Plan for Beck’s Lake (Ref. 12 , p. 7 ). The location s of the background soil s ample s

are described in Reference 5, page 18 and depicted in Reference 14 , page 1 . Chain -of-custody

record s are provided in Reference 17 , page s 64 and 109. Field logs are provided in Reference
13, pages 24 through 26 and 28 through 30. The description of each background soil sample is provided in Table 3 below.

Table 3 : AOC A Background Soil Sample Description – October 6, 2009

Sample ID/

CLP ID Sample Location Depth (inches

bgs) Date Sampled References

S31/ME2QX4 Collected from bare are a, south side of the front yard
, approximately 2,800 feet south ea st of the park

. 0-6 10/6/2009 Ref s . 5, pp. 18, 133; 13, p. 24 ; 14, p.1

S 32/ME2QX5 Collected from south side of back yard near chain link fence , approximately 2,480 feet south of the park

. 0-6 10/6/2009 Ref s . 5, pp. 18, 134; 13. p . 25 ; 14, p.1

S 35/ME2QX8 Collected from a residen tial yard
, approximately 3,280 feet west of the park

. 0-6 10/6/2009 Ref s . 5, pp. 18, 196 ;13, p. 28 ; 14, p.1

S 36/ME2QX9 Collected from a residen tial yard
, approxim ately 3,120 feet north of the park

. 0-6 10/6/2009 Ref s . 5, pp. 18, 196; 13, p. 29 ; 14, p.1

S 37/ME2QY0 Collected from a residen tial yard
, approximately 3,680 feet northwest of the park

. 0-6 10/6/2009 Ref s . 5, pp. 18, 196 ; 13, p. 30 ; 14, p.1

Notes: AOC = A rea of O bserved C ontamination bgs = Below ground surface CLP = Contract Laboratory Program ID = Identification number21 

### Background Concentrations

The investigation

- specific background soil sample s listed in Table 4 were collected by IDEM during the Oc tober 2009, ESI 2 of LaSalle Park/Beck’s Lake investigation (Ref. 5, p. 15 , 18 ). Soil samples were analyzed by EPA CLP laboratory, A4 Scientific Englewood, New Jersey (Ref. 17, pp. 55, 64, 101, 109) . All samples were analyzed for metals and cyanide using CLP SOW ILM05.4 (Ref s . 5, pp. 127, 128 , 191, 192; 17, pp. 56, 102 )

. The contract -required quantitation limits ( CRQL ) are listed on page 93 of Reference 1 5 for Method ILM05.3

. According to

informat ion presented on pages 1 through 5 for Reference 1 6 , the CRQL s for lead and arsenic were not change d for ILM05.4 (the updated SOW from December 2006)
, and are the same as
ILM05.3. The CRQL s and method detection limits are listed in Reference 17, pages 45, 92, and

145. The SQL for each analytical parameter listed in Table 4 was calculated and the calculations are presented in Reference 17B. P ercent moisture for each sample was calculated and the calculations are presented in Reference 17A. The highest arsenic concentration in the background soil samples was 9.7 mg/kg in samples S35 and S36 (Ref 5, p. 196).

Surface soil sample S34 was mistakenly identified as background sample in 2009 ESI 2 Report (Ref s . 5, p. 18 ; 11, p. 1 ). T he initially designated background soil sample S33 appears to be

much closer to the AOC and therefore, is also not considered as a background sample.22 TABLE 4 : Analytical Results for AOC A Background Soil Sample s

– October 2009 Sample ID/ CLP ID Hazardous Substance Concentration mg/kg Percent Moisture CRQL/MDL /SQL mg/kg References

S31/ME2QX4 Arsenic 2.7 14.1 1/0.36 /0.39 Refs. 5, pp. 133; 13, p. 24;14, p.1; 15, p. 93; 16, pp. 1

- 5;17, pp. 55

- 58, 61, 64 - 66, 77, 92 ; 17A, p.1; 17B, pp.1, 2 S32/ME2QX5 Arsenic 3.4 23.2 1/0.36 /0.43 Refs. 5, pp. 134; 13, p. 25;14, p.1; 15, p. 93; 16, p p. 1

- 5; 17, pp. 55

- 58, 62, 64

- 66, 78, 92 ; 17A, p.1; 17B, pp.1, 2 S35/ME2QX8 Arsenic 9.7 36.4 1/0.36 /0.53 Refs. 5, pp. 196 ; 13, p. 28;14, p.1; 15, 93; 16, pp. 1

- 5; 17, pp. 101

- 106, 109, 111, 115, 145 ; 17A, p.1; 17B, pp.1, 2 S36/ME2QX9 Ars enic 9.7 17.2 1/0.36 /0.40 Refs. 5, pp. 196 ; 13, p. 29;14, p.1; 15, 93;16, pp. 1

- 5; 17, pp. 101

- 106, 109, 111, 116, 145 ; 17A, p.1; 17B, pp.1, 2 S37/ME2QY0 Arsenic 7.9 20.6 1/.036 /0.42 Refs. 5, pp. 196; 13, p. 30;14, p.1; 15, 93;16, pp. 1

- 5; 17, p p. 101

- 106, 109, 111, 117, 145 ; 17A, p.1; 17B, pp.1, 2 Notes: AOC = Area of observed contamination CLP = Contract Laboratory Program CRQL = Contract Required Quantitation Limit , the substance

- specific level that a CLP laboratory must be able to

r outinely and reliably detect in specific sample matrices. The CRQL is not the lowest detectable level achievable, but rather the level that a CLP laboratory should reliably quantify (Ref. 1, Sec. 1.1)

. ID = Identification number MDL = Method Detection Li mit , the lowest quantity of hazardous substance that a method can detect reliably in either a sample or blank (Ref. 1, Sec. 1.1)

. SQL = Sample Quantitation Limit, the quantity of a substance that can be reasonably quantified given the limits of detection for the methods of analysis and sample characteristics that may affect quantitation (e.g. dilution, concentration) (Ref. 1, Sec. 1.1)

. mg/Kg = milligram per kilogram23 

### Contaminated Samples

The soil samples listed in Table 5 were collected from the resident ial properties during the IDEM

October 200 9 ESI 2 (Ref s. 5, pp. 15 , 17; 13, pp. 7, 9, 10, 14; 14, p.1 ) (see Figure 2 of this HRS documentation record). Soil samples were collected from the 0 to 6 inches bgs soil horizon ( Ref.

5 , p. 17 ). Field logs are prov ided in Reference 13 , p ages 7 , 9, 10 and 14 . C hain -of-custody records are provided in Reference 13 , p ages 11 and 63. The locations of the soil sampl es collected from the residential properties are depicted on Reference 14 , p age 1 . The description

of cont aminated soil samples is provided in Table 5 below and Reference s 5, page 17; and 13,

p ages 7, 9, 10 and 14.

Table 5 : AOC Contaminated Soil Sample Description

– October 200 9 LaSalle Park Homes
Sample ID/

CLP ID Sample Location Depth (inches

bgs) Date Sa mpled References

S 6 / 2QT6 Soil sample collected from LaSalle Park Homes
, Senior residence, grassy strip on north boundary 0

- 6 10/6/2009 Ref s

. 5 , pp. 17, 61 ; 1 3 , p.7 ; 14, p. 1 S 8 /2QT 8 1 Soil sample collected from LaSalle Park Homes, Senior residence, gras sy strip on north boundary 0

- 6 10/6/2009 Ref s . 5, pp. 17, 61 ; 13, p. 9 ; 14, p. 1 S14/2QW4 Soil sample collected from front yard of a residence near the LaSalle Park 0

- 6 10/6/2009 Ref s . 5, pp. 7, 1 32 ; 1 3 , p. 14 ; 14, p.1 Notes: 1 A duplicate sample S9/2QT 9 was also collected at this location (Ref. 5, p. 17; 13, pp. 9 , 10 ; 17, p. 11). AOC = Area of observed contamination bgs = Below ground surface CLP = Contract Laboratory Program ID = Identification number



### C ontaminated Sample Concentrations

The soil sample s listed in Table 6 were collected during the October 2009, ESI 2 of LaSalle

Park/Beck’s Lake (Refs. 5, p. 15 ; 14, p. 1 ). Soil samples were analyzed by EPA CLP laboratory, A4 Scientific Englewood, New Jersey (Ref. 17, pp. 3, 11, 55, 63) . All sample s were analyzed for metals and cyanide using CLP SOW ILM05.4 (Ref. 5, pp. 4, 56, 128 , 1 9 2). The CRQL s are listed on page 93 of Reference 1 5 for Method ILM05.3. According to information presented on pages 1 through 5 for Reference 1 6 , the CRQL s for lead and arsenic were not change d for

ILM05.4 and are the same as ILM05.3. The method detection limits and CRQL s are also listed on pages 45, 92, and 145 of Reference 17

. The SQL for each analytical parameter listed in Table24 

### 6 was calculated and the calculations are presented in Reference 17B. Percent moisture for each sample was calculated and the calculations are presented in Reference 17A.

Arsenic concentrations ranged from 2.7 to 9.7 mg/ k g in the five background samples (S31, S32, S35, S36 and S37) collected during the ES I 2 (Ref s . 5, pp. 133, 134, 196 ; 17, pp. 61, 62, 64, 77-
76, 106, 109, 115-117 ). The highest concentration of arsenic (9.7 mg/kg ) was detected in the background samples S35 and S36 ( Ref s . 5, pp. 1 96, 17, pp. 115, 116 ). Three times the high est background concentration for arsenic is 29.1 mg/k g (3 times 9.7 mg/ kg). T he hazardous chemical

constituents in surface soil samples that exceeded three times the highest concentrations detected in the background samples are listed in Table 6 below.

TABLE 6 : Analytical Results for AOC A Soil Sample

– October 2009 LaS alle Park Homes
Sample ID/

CLP ID Hazardous Substance Concentration mg/kg Percent Moisture CRQL/ MDL /SQL

(mg/kg) References

S6/2QT6 Arsenic 34.3 23.1 1/0.36 /0.44 Refs. 5, pp. 20, 39, 55

- 59, 61; 15, p. 93; 16, pp. 1

- 5; 17, pp. 3

- 7, 9, 11, 13, 22, 45 ; 17A, p.1; 17B, pp.1, 2 S 8 /2QT 8 1 Arsenic 29.4 21.4 1/0.36 /0.43 Refs. 5, pp. 20, 55

- 59, 61; 15, p. 93; 16, pp. 1

- 5; 17, pp. 3

- 7, 9, 11, 13, 2 4 , 45 ; 17A, p.1; 17B, pp.1, 2 S14/2QW 4 Arsenic 30.8 21.1 1/0.36 /0.43 Refs. 5, pp. 20, 127

- 132; 15, p. 93; 16, pp. 1

- 5; 17, pp. 55

- 59, 63, 65, 68, 92; 17A, p.1; 17B, pp.1, 2 Notes: 1

– The duplicate sample S9 collected at this location had higher concentration (32.7 mg/kg) than the i nvestigative sample S8 (Refs. 5, pp. 17; 13, p. 10 17, pp. 9, 11, 25) AOC = Area of observed contamination CLP = Contract Laboratory Program CRQL = Contract Required Quantitation Limit
, the substance

- specific level that a CLP laboratory must be able to

r outinely and reliably detect in specific sample matrices. The CRQL is not the lowest detectable level achievable, but rather the level that a CLP laboratory should reliably quantify (Ref. 1, Sec. 1.1)

.

ID = Identification number MDL = Method Detection L imit , the lowest quantity of hazardous substance that a method can detect reliably in either a sample or blank (Ref. 1, Sec. 1.1)

. SQL = Sample Quantitation Limit, the quantity of a substance that can be reasonably quantified given the limits of detection for the methods of analysis and sample characteristics that may affect quantitation (e.g. dilution, concentration) (Ref. 1, Sec. 1.1)

. mg/kg = milligram per kilogram25 

### Attribution

A 1984 103(c) notification to the U.S. EPA from Bendix Corporation, a manufa cturing facility for the automotive/aerospace industry, along with a similar notification to the St. Joseph County Health Department, revealed that Bendix, together with other numerous companies and individuals, dumped hazardous subst ances at the Beck’s La ke landfill “ at some time during the past 40 years ,” i.e., up to the 1950s (Refs

. 5, pp. 12, 13 , 284 ). The waste disposed of at Beck’s

Lake included asbestos, plating wastes, solvents, paint wastes, organics, inorganics, acids, bases, oils and sludge, and foundry sand that potentially contained arsenic and other contamina nts (Ref s . 5, p p.13, 285-289 ). Based on the available analytical results
, the Bendix waste such as hydroxide sludge and foundry sand contained arsenic ; therefore, the waste disposed by Be ndix Corporation at the Beck’ s Lake S ite most likely contained arsenic (Ref s. 5, p. 288; 7, pp.1- 3).

The historical aerial photo graph s of the area show that Falcon Street was a partial street that ended in the middle of what was then the contiguous propert y that included the current LaSalle Park/Beck’s Lake and the LaSalle Park Homes (Refs. 5, p. 25; 18 , p. 1; 19 , p. 1; 20 , p. 1). The dumping area is evident on the 1951 historical aerial photograph
, extending to the edge of the partial road which is now Fa lcon Street and some truck paths extend ing beyond the edge of the partial road to the area that is now part of the LaSalle Park Homes (Ref s. 5, p. 25; 19 ; p. 1;).
Therefore, it appears from historical aerial photographs that before the LaSalle Park Homes w ere built, the waste that was deposited in the western portion of LaSalle Park/Beck’ s Lake was also likely deposited in the current LaSalle Park Homes property (Ref s. 5, pp. 25, 26; 18 , p. 1; 19 ; p. 1; 20, p. 1).

The contamination detected on the LaSalle Park Homes property could potentially be related to LaSalle Park because cadmium, copper, chromium, lead, nickel and zinc detected in the waste samples collected from La S alle Park were also detected at significantly high concentrations in surface soil samples S6 (cad m ium and lead), S8 (cadmium, lead and zinc), S13 (cadmium, chromium, copper, lead, zinc, nickel) and S14 (cadmium, lead and zinc) collected from the LaSalle Park Homes property (Ref. 5, p. 20 and Table 2 of this HRS documentation record ). T he

subsurface material in the LaSalle Park was of non

- uniform color and contained glass and other unidentifiable foreign debris (Ref. 13A, p.1). Therefore, waste deposited in the LaSalle Park could potentially have been deposited on the LaSalle Park Hom es property

. The material at a26 

### depth of 2

- 5 feet in boring 5 is described to contain glass suggesting waste material within this depth (Ref. 13, p.38).

Site

- Wide Voluntary Site Investigation w as performed at the Allied S ignal Industrial Complex

located a t 717 N orth Bendix Drive, South Bend, Indiana (Ref. 23, pp. 5, 7, 8) . During this investigat i on soil and groundwater at th is location were characterized (Ref. 23, p. 7) . Soil samples collected at the property have been shown to contain a rsenic at concent rations of 38 mg/kg in a soil sample collected from 11GP005; 32 m g/kg in a soil sample collected from

12 GP003; and 47 mg/kg in a soil sample collected from 13GP001 (Ref. 23, pp. 142, 406, 416)

. Groundwater samples collected from the site have been shown t o exceed the MCL of 10 μg/l for

arsenic in samples collected from 13GP004 (27 μg/l) , MW

- 8 (20 μg/l), 09GP002 (17 μg/l), 17GP001 (21 μg/l) and MW

- 6 (12 μg/l) (Ref 23. p p. 423, 541, 624, 626, 636, 637 ) . The level of arsenic contamination in the soil and gro undwater suggest that arsenic is most likely associated with operations at AlliedSignal Facility. The Bendix Corporation, under a merger, became part of Allied Corporation, which later became AlliedSignal, Inc (Ref. 24, p. 1).

Hazardous Substa nce in the Release

Arsenic27 

### 5.1 RESIDENT POPULATION THREAT

5.1.1 Likelihood Of Exposure

Table 7 lists surface soil samples collected in October 20 0 9 from residential propert ies located

within AOC A (see Figure 3 of this HRS documentation record). Refer ence 21 shows approximate radius of 200

- feet from the sample location s S6, S8, and S14 and illustrates that residences are within the same property boundaries.

Table 7 : Likelihood of Exposure

Sample ID/ CLP ID Sample Date Distance of Population from Area of Observed Contamination References

S6/2QT6 10/6/09 Less than 200 feet Refs. 5, pp. 35, 61 ;1 3 , p. 7; 17, p.11 ; 21, p. 1 S 8 /2QT 8 10/6/09 Less than 200 feet Refs. 5, pp. 61;13, p. 9 ; 17, p.11; 21, p. 2 S14/2QW4 10/6/09 Less than 200 feet Refs. 5, p. 13 2;13, p. 14; 17, p. 63; 21, p. 3 Notes: CLP = Contract Laboratory Program. ID = Identification

Resident Population Threat Likelihood of Exposure Factor Category Value: 550 (Ref. 1, Section 5.1.1)



### 5.1.2 Waste Characteristics

5.1.2.1 Toxicity

The toxici ty values for the hazardous substances detected in the area of observed contamination samples are summarized in Table 8.

Table 8 : Soil Exposure Toxicity

Hazardous Substance Toxicity Factor Value Reference

Arsenic 10,000 2, p p . BI -1 , A

- 30

Toxicity Fact or Value: 10,000 (Ref. 1, Section 5.1.2.1)28 5.1.2.2 HAZARDOUS WASTE QUANTITY

Hazardous Constituent Quantity



### The information available is not sufficient to evaluate Tier A as required in Section 2.4.2.1.1 of
the HRS, which is to determine total mass o f the hazardous substance present in the waste source. The lack of manifests detailing waste quantities, PRP records, State records, permits etc. does not support the use of Tier A. The mass of all the hazardous substances has not been

determined as a resu lt, the evaluation of Hazardous Waste Quantity proceeds to the evaluation of Tier B, hazardous wastestream quantity (Ref. 1, Section 2.4.2.1.1).

Hazardous Constituent Quantity Assigned Value: NS

Hazardous Wastestream Quantity

There is not sufficient i nformation to evaluate Tier B which requires determining mass of the hazardous wastestreams that are allocated to the source as required in the HRS (Ref. 1, Section 2.4.2.1.2). Because the original source of contamination is unknown, the hazardous wastestr eam quantity cannot be calculated and the evaluation of Hazardous Waste Quantity proceeds to the evaluation of Tier C, volume (Ref. 1, Section 2.4.2.1.2). Hazardous Wastestream Quantity Assigned Value: NS

Volume

The area of observed contamination is not a surface impoundment, drums, or tanks and containers other than drums, as required to evaluate Tier C, volume, by Reference 1, S ection
5.1.2.2, and Table 5-2.

Volume Assigned Value: 0

Area

AOC A consists of contaminated soil at the residential are a to the west of the park (s ee Figure 2

of this HRS documentation record )

. Areas covered by structures and impervious surfaces are

excluded from the AOC. Although three soil samples are included in site scoring, two of the three samples are in close prox imity, such that for practical purpose s only two samples exist to29 

### define the AOC and between the two samples there is an area where arsenic was detected at concentrations below three times the background concentrations. T herefore, the area of AOC A is undetermined, but greater than zero (Ref. 1, Section 5.1.2.2).

Sum (square feet [ft2]): >0 Equation for Assigning Value (Ref. 1, Table 5-2): Area (A)/34,000

Area Assigned Value: >0

Hazardous Waste Quantity Value

AOC A is assigned an Hazardous Waste Q uantity ( HWQ ) value of greater than zero, but undetermined (Ref. 1, Section 5.1.2.2).

HWQ Value: >0

Table 9: Hazardous Waste Quantity
Area of Observed Contamination Letter Type Area Hazardous Waste Quantity

A Contaminated Soil Undetermined, greater th an zero (> 0)



### The hazardous constituent quantity for AOC A is not adequately determined. The HWQ is undetermined, but greater than zero. Per HRS Section 2.4.2.2, for the soil exposure pathway, the HWQ factor value is the higher of either the value from HRS Table 2 -6 or 10.

Hazardous Waste Quantity Factor Value: 10 (Ref. 1, Section 2.4.2.2)

5.1.2.3 Calculation of Waste Characteristics Factor Category Value

The waste characteristics factor category was obtained by multiplying the toxicity and HWQ

f actor values. Based on this product, a value was assigned in accordance with Reference 1,

Table 2 -7.30 

### Toxicity Factor Value (see Table 8 of this HRS documentation record): 10,000 Hazardous Waste Quantity Factor Value: 10

Toxicity Factor Value × Haza rdous Waste Quantity Factor Value: 1 x 10 5



### Waste Characteristics Factor Category Value: 18 (Ref. 1, Table 2-7)

5.1.3 Resident Population Threat Targets

The soil samples listed in Table 10 were collected during the IDEM October 2009 ESI 2 (Ref s

. 5, p. 17; 13, pp. 7, 9, 10, 1 4 ). Surface soil sample S6 was collected from one parcel and surface soil samples S8 and S14 were collected from another parcel (Refs. 21, p.1; 22, p.1 ; 25, p.1; 28, p.1)

Level I Concentrations

During the IDEM October 20 09 ESI 2 investigation, soil samples were collected from LaSalle

Park and residential properties (Refs. 5, pp. 17, 18; 14 , p. 1 ). S urface soil (0 to 6 inches bgs) samples were collected from the housing complex of subsidized housing and apartments called

LaSalle Park Homes (Refs. 5, pp. 17, 18; 13, pp. 7, 9, 10, 14; 14, p. 1). LaSalle Park Homes fronts Falcon Street the length of the west boundary of the LaSalle Park from north to south (R ef s . 5, p.12 ; 1 4 , p. 1) (see Figure 2 of this HRS documentation record). So il samples were analyzed by EPA CLP laboratory, A4 Scientific in The Woodland
, Texas (Ref. 17, pp. 3, 11, 55, 63) . All samples were analyzed for metals and cyanide using CLP SOW ILM05.4 (Ref s . 5, pp. 127, 128; 17, pp. 4, 11, 56, 63). See Figure 3 for sam pling locati ons.31 TABLE 10 : AOC A Level I Concentrations Sample ID/CLP ID Hazardous Substance Hazardous Substance Concentration Background Concentration Benchmark Concentration Benchmark Reference

S6/ ME2QT6 Arsenic 34.3 mg/kg 9.7 mg/kg 0.43 mg/kg CR S C 2 , p. BII

13; 5, pp. 20, 39, 55

- 59, 61 ;13, p. 7; 17,
pp .11 , 22 ; S 8 /ME2QT 8 Arsenic 29.4 mg/kg 9.7 mg/kg 0.43 mg/kg CR S C 2, p. BII

13; 5, pp. 20, 55

- 59, 61 ;13, p. 9 ; 17, p p .11, 2 4 ; S14/ME2Q W4 Arsenic 30.8 mg/kg 9.7 mg/kg 0. 43 mg/kg CR S C 2, p. BII

13; 5, pp. 20, 127

- 132; 13, p. 14; 17, p p

. 63 , 68 ; Notes: AOC = Area of observed contamination CLP = Contract Laboratory Program CRSC = Cancer Risk Screening Concentration ID = Identification mg/kg = Milligrams per kilogram



### 5.1.3.1 Resident Individual

As previously stated in this HRS documentation record, surface soil samples were collected

within two

- feet of the surface in exposed soil areas from residential yards and within 200 feet of

residences. Sample S6 was collected from a p arcel owned by LaSalle P ark Home s and a multifamily senior residence is located on th is parcel (Refs. 21, p. 1; 22, p.1; 25, p.1; 28, p. 1)

. Samples S8 and S14 were collected from a single p arcel owned by LaSalle Park Home s on
which several homes are located (Refs. 21, pp. 2, 3; 25, p.1; 2 7 , p. 3,4 ; 2 8 , p.1 ). The residential

structures in the area of concern are each less than 200 feet from, and on the same property with,

a sample meeting the observed contamination criteria (surface soil samples S6, S8, and S14) (Ref s. 1, Sec. 5.0.1; 21, p p . 1 -3 ); therefore, residential properties where soil sample analytical

results indicate observed contamination of a rsenic are less than 200 feet from areas of observed contamination (see Tables 5, 6 and Figure 2 of this HRS documentation rec ord). The cancer risk32 

### screening concentration for arsenic is 0 .43 mg/kg (Refs. 1, Sec. 5.1.3.1, p. 51647; 2, p. BII -13). Thus, a resident is subject to Level I concentrations and a value of 50 is assigned.

Area of Observed Contamination Letter: A Level of Contamination (Level I/Level II): I References: 1, p. 51647; 2, p. BII -13; 5, pp. 22, 39 , 61, 132; 13, pp. 7, 9, 10, 14; 17, pp.11, 22, 28, 63, 68; 21, p. 1-3.

Resident Individual Factor Value: 50 (Ref. 1, Section 5.1.3.1)

5.1.3.2 Resident Population

The samples listed in Table 11 and Table 1 2 below were collected during the October 2009 ESI 2 sampling event conducted by IDEM (see Table s 5 and 6 of this HRS documentation record). Surface soil (less than 6 inches bgs) samples collected from LaSall e Park Homes propert y during

the 2009 ESI 2 contained arsenic at Level I concentrations (see Table 10 of this HRS documentation record).

5.1.3.2.1 Level I Population

T hree sample locations
, S6 , S8 and S14
, contained arsenic at Level I concentrations (se e Table 6

of this HRS documentation record )

. Sample S6 was collected from a parcel owned by LaSalle

Park Home s and a multifamily senior residence is located on this parcel (Refs. 21, p. 1; 22, p.1; 25, p.1; 28, p. 1) . Samples S8 and S14 were collected fr om a single parcel owned by LaSalle

Park Home s on which several homes are located (Refs. 21, pp. 2, 3; 25, p.1; 2 7 , p. 3,4 ; 2 8 , p.1 ).

The residences th at are within approximately 200 feet of these t hree sampling locations are depicted in Reference 2 1. The Level I Resident Population Targets that are within 200 feet of sample S6 are listed in Table 11 of this HRS documentation record. The Level I Resident Population Targets that are within 200 f eet of sample S 8 are listed in Table 1 2 of this HRS

documentat ion record. The Level I Resident Population Targets that are within 200 feet of sample S14 are listed in Table 13 of this HRS documentation record.33 Table 11 : Level I Resident Population Targets Sample S6
Area of Observed

Contamination Letter Sample ID Numbe r of Residences Total Number of Residents References

Senior Residence Building 3505 West Washington A S6 4 3 41 Ref s

. 13, p. 7; 14, p.1; 21 , p.1; ; 25, p.1; 26, p. 2; 27 , p. 2 ; 2 8 , p. 1 Sub Total 41 Notes: ID = Identification

Table 1 2 : Level I Resident Population Targets Sample S 8

Area of Observed

Contamination Letter Sample ID Number of Residences Total Number of Residents References

Residences 135 Falcon Street A S8 1 2 Refs

. 13, p p

. 9, 10 ; 14, p.1; ; 2 1 , p. 2 ; 25, p.1; 26, p. 2;27, p. 3 ; 2 8, p. 1 Residences 137 North Falcon Street A S 8 1 3 Refs. 13, p. 14; 14, p.1; 21, p. 2 ; 25, p.1; 26, p. 2;27, p. 3 ; 28, p.1 Residences 143 North Falcon Street A S 8 1 7 Refs. 13, p. 14; 14, p.1; 21, p. 2 ; 25, p.1; 26, p. 2;27, p. 3 ; 28, p. 1. Residences 145 North Falcon Street A S 8 1 5 Refs. 13, p. 14; 14, p.1; 21, p. 2 ; 25, p.1; 26, p. 2;27, p. 3 ; 28, p.1. Residences 149 North Falcon Street A S 8 1 4 Refs. 13, p. 14; 14, p.1; 21, p. 2 ; 25, p.1; 26, p. 2;27, p. 3 ; 28, p.1. Sub Total 21 Notes: ID = Identification34 Table 1 3 : Level I Resident Population Targets Sample S14
Area of Observed

Contamination Letter Sample ID Number of Residences Total Number of Residents References

Residences 2 09 North Falcon Street A S14 1 1 Refs. 13, p. 14; 14, p.1; 21 , p. 3 ; 25, p.1; 26, p. 2;27, p. 4; 28, p. 1 Residences 211 Falcon Street A S 14 1 1 Refs. 13, p. 14; 14, p.1; 21 , p. 3 ; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 1 5 North Falcon Street A S14 1 1 Refs. 13, p. 14; 14, p.1; 21, p. 3 ; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 17 North Falcon Street A S14 1 1 Refs. 13, p. 14; 14, p.1; 21, p. 3; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 2 5 North Falcon Street A S14 1 4 Refs. 13, p. 14; 14, p.1; 21, p. 3; 26, p. 2;27, p. 4; 28, p. 1 Residences 22 7 North Falcon Street A S14 1 4 Refs. 13, p. 14; 14, p.1; 21, 26, p. 2;27, p. 4; 28, p. 1 Residences 22 9 North Falcon Street A S14 1 5 Refs. 13, p. 14; 14, p.1; 21, p. 3; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 33 North Falcon Street A S14 1 3 Refs. 13, p. 14; 14,
p. 1; 21, p. 3 ; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 35 North Falcon Street A S14 1 3 Refs. 13, p. 14; 14, p.1; 21, p. 3 ; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 37 North Falcon Street A S14 1 2 Refs. 13, p. 14; 14, p.1; 21, p. 3 ; 26, p. 2;27, p. 4; 28, p. 1 Residences 2 39 North Falcon Street A S14 1 2 Refs. 13, p. 14; 14, p.1; 21, p. 3; 26, p. 2;27, p. 4; 28, p. 1 Sub Total 27 Notes:
1 ID = Identification35 

### Sum of individuals subject to Level I concentrations: 41+21+27 = 89 Sum of individuals subj ect to Level I concentrations × 10: 89 x 10 = 890

Level I Concentrations Factor Value: 890 (Ref. 1, Section 5.1.3.2.1)

5.1.3.2.2 Level II Concentrations

Level II Concentrations for the Resident Population Threat was not scored (NS) because Level I

Co ncentration Resident Population threat is sufficient to qualify the site for the NPL. This threat is of concern to EPA and may be considered during a future evaluation (Ref. 1, Table 5- 6).

Level II Concentrations Factor Value: NS

5.1.3.3 Workers



### Tota l workers were not scored (NS)

Workers Factor Value: NS

5.1.3.4 Resources

Resource Description: There are no commercial agriculture, silviculture, or commercial livestock production or grazing within the area of observed contamination.

Resources Factor Value: 0

5.1.3.5 Terrestrial Sensitive Environments

Sensitive Environment Description: There are no terrestrial sensitive environments identified

within the area of observed contamination.

Terrestrial Sensitive Environments Factor Value: 0

5.2 NEARBY POPULATION THREAT

Nearby population threat was not scored.

Nearby Population Threat Factor Value: NS