Attachment 3.8.1 - Appendix H1 Phase I Environmental Site Assessment Parcel A.pdf — Chula Vista City Council, November 18, 2025 (part 7 of 24)

Boring ID Depth (feet) Diameter (inches) Radius (feet)
Ideal Volume
of Bentonite
Backfill
(cubic feet)
Depth
(feet)
Volume of
Bentonite and
Concrete
Backfill
(cubic feet)
Estimated Volume of
Grout/Concrete
Backfill
(gallons)
Number of Bags of
TYPE II Portland
Cement/Bentonite
Used
Volume of
Grout Concrete
Backfill
(cubic feet)
DB‐2 200 6 0.25 9.8 198 38.9 290.7 27.0 255.0
DB‐4 485 4 0.16 9.7 485 39.0 291.7 37.0 325.0
DB‐5 200 6 0.25 9.8 199 39.1 292.2 33.0 305.0
HALEY & ALDRICH, INC.
2021_0106_HAI_ 60 Day Report Table I_BoringMaterial_F.xlsx JANAUARY 2021
FIGURE
ROHR
BUILDING 1
A@ A@
A@
A@A@
A@ A@
DB-4 OW-4
OW-3 OW-1
DB-2
OW-2
DB-5
G ST

BAY BOULEVARD

H STREET
99 100
29 56702233
57133002
56701007
56701029
56702228
57133030
57133024
56702230
56702231
57133016
57133003
57133029
56726033
NOTES

1. ALL LOCATIONS AND DIMENS IONS AREA APPROXIMATE.

2. AERIAL IMAGERY S OURCE: S AN DIEGO COUNTY, MARCH 2017 LEGEND

S ITE BOUNDARY

PARCEL BOUNDARY AND AS S ES S OR'S PARCEL NUMBER
0 120 240

S CALE IN FEET
ROHR, INC., A COLLINS AEROS PACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VIS TA, CALIFORNIA

EXIS TING MONITORING

WELL LOCATIONS MAP
S CALE: AS S HOWN
S EPTEMBER 2020
GIS FILEPATH:G:\43559_North Cam pus\000_Global\GIS \Maps\2020_09\127827_019_0001_WELL_LOCATION_MAP.m xd ― US ER:dfm ― LAS TS AVED:9/15/20209:35:24AM §¨¦5
29 BUILDING NUMBER
56701029
A@ APPROXIMATE MONITORING WELL LOCATION
•
•
GARY W. ERBECK

DIRECTOR
September 17, 2001
Mr. Benjamin Guerrero
City of Chula Vista
•
Qlountll of

DEPARTMENT OF ENVIRONMENTAL HEALTH

LAND AND WATER QUALITY DIVISION
P.O. BOX 129261, SAN DIEGO, CA 92112-9261
(619) 338-2222 FAX (619} 338-2377
1-800-253-9933
Community Development Dept.
276 Fourth Ave.

Chula Vista, CA 91910
Dear Mr. Guerrero:

VOLUNTARY ASSISTANCE PROGRAM CASE #H26520-001
350-360 BAY BLVD., CHULA VISTA

RICHARD HAAS

ASSISTANT DIRECTOR
The site remediation information submitted to this agency by URS Corporation, summarizing the site characterization and mitigation activities at the above-referenced location, has been reviewed.

With the provision that the information provided to this agency was accurate and representative of existing conditions, it is the position of this office that no further action is required at this time.

Please be advised that this letter does not relieve you of any liability under the California Health and Safety Code or the Porter Cologne Water Quality Control Act. If previously unidentified contamination is discovered which may affect public health, safety and/or water quality, additional site assessment and cleanup may be necessary.

Changes in the proposed use of the above site may require reevaluation to determine if the change will pose a risk to public health.

Thank you for your efforts in resolving this matter. Please contact Nasser Sionit of the Site Assessment and Mitigation Program (SAM), at (619) 338-2239, if you require additional assistance.

Sincerely,
/7 - ("'!:\ 't-t--
GEORGE McCANDLESS, Program Manager
· Supervising Environmental Health Specialist
Site Assessment and Mitigation Program
GM:NS:kd
Enclosure
cc: Regional Water Quality Control Board
Veryl Wittig, Project Geologist, URS Corporation
Rick Siordia, Rohr, Inc., c/o Arthur Anderson, LP., Property Owner "Environmental and public health through leadership, partnership and science" WPIH2652().()01 CLO
r

AGE C N Y INFORMATION
• Case Closure Summary
Non-LOP or Voluntary Assistance Program
DATE: September 6 2001
Agency Name: County of San Diego, Environmental Health SAM Address: P.O. Box 129261 CitytState/ZIP: San Diego, CA 92112.a261 Phone: (6191 338-2222 FAX: 16191 338-2377 . DEH Staff Person: Nasser Sionit nue: Proiecl Manaaer II . CASE INFORMATION
case No.

Site Name: Vacant Bay Blvd. Chula Vis1a
Site Address: 350-360 Bav Blvd. Chula Vista CA
Property Owner: City of Chula Vis1a Address: 276 Fourth Ave, Chula Vista, CA Phone: 619-476-5311 91910 - Party : City of Chula Environmental Services, City of Chula Vista Phone: Same as above Vis1a Ben in G"""""'
Twe of case: Non-Tank case
RWQCBIDTSC Notification of DEH OVersiahl: 01-31.01
Ill SITE CHARACTERIZATION AND/OR INFORMATION
Cause and Twe of Contamination: Auto wreckina lead contamination Site Characterization comalate? Yes
Monitoring Wells lns1alled7 No I Total Number: I Proper sc:ree;.ed Interval? Number of decommissioned wells:

NIA NIA · NIA
Range of groundwater levels on the site? Estimated at 15-20 BG Groundwater F- Direction:

Unknown
Most Sensitive Current Use: Groundwater has no existing beneficial uses for municipal and induslrial, but has beneficial uses for agricultural Are Drinkina Water Wells Affected? No RWQCB Baain.Number: Unit 11909.11 Is Surface Water Affected? No Nearest Surface Water name: San Dieao Bav Off-site Beneficial Use Impacts (addresses/locations): None

TREATMENT AND DISPOSAL OF AFFECTED MATERIAL
Material Amount (Include Units) Action (Treabnent or Disposal w/DestinaUon) Soil BOO Cubic Yards Disposal to Otay Class 1 Landfill
- - - - - - - - - - - - - - - Non-LOP - Underground Storage Tank OVersoght handled outsode the LOP Non-Tank- Voluntary Assiatance Program
DEH:HM-9159 (Rev. 6/99) Page 1 of2
.

Date

02.05-01
-
-
-
-
-
• Case Closure Summary
Non-LOP or Voluntary Assistance Program
Comments: Previous site uses included agricultural fanning, auto wrecking and auto repair activities. Lead contsinlng soil was encountered during geophysical investigation of the site for development. Approximately 800 cubic yards of lead contaminated soil were excavated to a depth of two faet and disposed off site. Confirmation soil samples were collected from the perimeter and the floor of the footprint of the excavation at statistically random locations. The consultant has concluded lhet the mean total lead concenlration in-situ Solis at this site was 54 mglkg, and the upper %95 confidence interval was 71 mglkg, both significantly lower than the residential PRG of 400 mglkg. According to the consultant this soil contamination does not present human health risk at this site.

IV CLOSURE
DoeS completed correctJve action orotect exiSting beneficial uses oer the Regional Board Basin Plan? Yes Does completed corrective action protect beneficial uses -the Regional Board Basin Plan? Yes Does corrective action protect public health for current land use? Yes Case review based on currentlproooeed use as: Proposed light Industrial with oaved areas and bulldina on concrete slabe.

Are there other Issues DEH needs to follow up on: No
Site Management Requirements: Any contaminated soil excavated as pert of subeurface construction work must be managed in accordance with the 18i!at requirements at lhet time.
- Should corrective action be reviewed If lend use changes? Yes Ust Enforcement Actions Taken: NIA
Ust Enforcement Actions Rescinded: NJA
Is this account up to date and current?: Yes
. V LOCAL AGENCY REPRESENTATIVE DATA
Name: TonySawyer
/ /
Title: Hydrogeologlst
land and Water Quality Division
Signature: 'f.* Dste:

VI. RWQCS tJ6'TIFICATION ./"'-.

Dste Submllled YAP soil onlY case RWQCB ResDORSe:

RWQCB Staff Name: Tltie: Loste:-
VII. . ADDITIONAL COMMENTS, DATA, ETC.

This document and the related CASE CLOSURE LETTER, shall be retained by the lead agency as part of the official - file.

DEH:HM-9159 (Rev. 6199) Page 2of2
Collins Aerospace
850 Lagoon Drive
Chula Vista, CA 91910-2098 USA
+1 619 691 6425 Fax: +1 619 691 2222
[email protected]
www.collinsaerospace.com
Roberto Valenzuela
Sr. Director, Operations
Rohr, Inc., a Collins Aerospace Company
Aerostructures
June 13, 2022
San Diego Regional Water Quality Control Board
2375 Northside Drive, Suite 100
San Diego, California 92108-2700
Attention: Mr. Tom Alo
Subject: Data Gap Investigation Report
Rohr, Inc. – North Campus, Parcel A
850 Lagoon Drive
Chula Vista, California
SDRWQCB Reference: T0000011095:talo
Dear Mr. Alo:

Please find enclosed for your review, a copy of the subject document dated June 10, 2022 that was prepared by Haley & Aldrich, Inc. for Rohr, Inc., a Collins Aerospace Company (Rohr) for Parcel A at the site. This document is being submitted in response to Directive C.2.b of Cleanup and Abatement Order No. R9-2021-0042, issued to Rohr on July 12, 2021 by the San Diego Regional Water Quality Control Board.
“I certify under penalty of law this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.”
If you have any questions, please contact Tyler Adkins at (619) 691-2020.

Sincerely,
Roberto Valenzuela
Sr. Director, Operations
DocuSign Envelope ID: 1961682F-A22E-490C-8035-D1798D30D3D9

www.haleyaldrich.com

DATA GAP INVESTIGATION REPORT
ROHR, INC. - NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA
GEOTRACKER ID NO. T10000011095
by
Haley & Aldrich, Inc.

San Diego, California
for
Rohr, Inc., a Collins Aerospace Company
Chula Vista, California
File No. 127827-043
June 2022
HALEY & ALDRICH, INC.
5333 Mission Center Road
Suite 300
San Diego, CA 92108
619.280.9210
www.haleyaldrich.com
June 10, 2022
File No. 127827-043
San Diego Regional Water Quality Control Board
2375 Northside Drive, Suite 100
San Diego, California 92108-2700
Attention: Mr. Tom Alo
Subject: Data Gap Investigation Report
Rohr, Inc. - North Campus, Parcel A
Chula Vista, California
GeoTracker ID No. T10000011095
Dear Mr. Alo:

Haley & Aldrich, Inc., is submitting this Parcel A “Data Gap Investigation Report” (Report) on behalf of Rohr, Inc., a Collins Aerospace Company, (Rohr) for the North Campus at 850 Lagoon Drive in Chula Vista, California. This Report was prepared pursuant to Directive C.2.b in Cleanup and Abatement Order No. R9-2021-0042 (CAO) issued to Rohr by the San Diego Regional Water Quality Control Board (SDRWQCB) on July 12, 2021, in accordance with the optional document submittals proposed by Raytheon Technologies Corporation (Raytheon), Rohr’s parent company, in its letter dated August 25, 2021.

Raytheon received the SDRWQCB’s letter dated January 7, 2022, indicating that it had no further comments on the “Data Gap Investigation Work Plan” (Work Plan) submitted on December 22, 2021, to meet the requirements of Directive C.2.a in the CAO. The Work Plan was implemented in March 2022 and the last scheduled activity in the Work Plan (professional survey) was completed on March 29, 2022.

As required by CAO Directive C.2.b, this Report includes the following:
 A detailed description of all activities completed to address the data gaps.  Supporting information such as boring logs, data tables, maps, and laboratory analytical data.  Results, conclusions, and recommendations.

San Diego Regional Water Quality Control Board
June 10, 2022

Page 2 ends

Please contact the undersigned if you have any comments or questions regarding this Report.

Sincerely yours,
HALEY & ALDRICH, INC.

Robert K. Scott, PG, CHg, QISP Keith A. Foster
Senior Associate Hydrogeologist Senior Technical Specialist Enclosures
c: Raytheon Technologies Corporation; Attn: Mr. John Baron Rohr, Inc., a Collins Aerospace Company; Attn: Mr. Tyler Adkins Wohl Property Group; Attn: Mr. Emil Wohl
GSI Environmental Inc.; Attn: Mr. Gino Bianchi-Mosquera AECOM; Attn: Mr. Jerome Zimmerle
\\haleyaldrich.com\share\sdg_common\127827_North Campus\043 Parcel A Data Gap Investigation\Deliverables\2022_0610_HAI_Parcel A Data Gap Invest Report_F.docx
HALEY & ALDRICH, INC.
5333 MISSION CENTER ROAD
SUITE 300
SAN DIEGO, CA 92108
619.280.9210
www.haleyaldrich.com

SIGNATURE PAGE FOR

DATA GAP INVESTIGATION REPORT
ROHR, INC. - NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

PREPARED FOR
ROHR, INC., A COLLINS AEROSPACE COMPANY

CHULA VISTA, CALIFORNIA
PREPARED BY:

Keith A. Foster
Senior Technical Specialist
REVIEWED AND APPROVED BY:

Mehdi Miremadi
Principal
Haley & Aldrich, Inc.

Robert K. Scott, PG, CHg, QISP
Senior Associate Hydrogeologist
Haley & Aldrich, Inc.

Table of Contents
Page
i
List of Tables iii
List of Figures iii
List of Abbreviations iv

1. Background 1

1.1 SITE DESCRIPTION 2

1.1.1 Site History 2

1.1.2 Site Geology 2

1.1.3 Site Hydrogeology 3

1.2 SITE ASSESSMENT AND REMEDIATION 3

1.3 HUMAN HEALTH RISK ASSESSMENT 3

1.4 DATA GAPS 4

2. Scope of Work 5

3. Field Investigation 6

3.1 PRE-FIELD ACTIVITIES 6

3.2 FIELD ACTIVITIES 6

3.2.1 Direct-Push Drilling and Sampling 6

3.2.2 Temporary Soil Gas Probe Installation and Sampling 6

3.2.3 Well Cluster Installation 7

3.3 WORK PLAN MODIFICATIONS 8

3.4 INVESTIGATION-DERIVED WASTE 8

3.5 PROFESSIONAL SURVEY 8

4. Laboratory Analyses and Results 9

4.1 LABORATORY ANALYSES 9

4.2 LABORATORY ANALYTICAL RESULTS 9

4.2.1 Soil 9

4.2.2 Soil Gas 10

5. Discussion 11

5.1 SOIL 11

5.2 SOIL GAS 12

5.3 GROUNDWATER 13

6. Conclusions and Recommendations 14

6.1 SOIL 14
Table of Contents
Page
ii

6.2 SOIL GAS 14

6.3 GROUNDWATER 15
References 16
Tables
Figures
Appendix A – DEHQ Boring/Well Permit
Appendix B – Boring and Well Logs
Appendix C – Temporary Soil Gas Probe Construction Schematics Appendix D – Well Development Logs
Appendix E – Waste Manifests
Appendix F – Professional Survey
Appendix G – Laboratory Analytical Reports - Eurofins Calscience Appendix H – Laboratory Analytical Reports – H&P Mobile Geochemistry Appendix I – Data Gap Investigation Summary Tables
iii
List of Tables
Table No. Title
1A Soil Analytical Results – Building 29 North
1B Soil Analytical Results – Building 29 Central
1C Soil Analytical Results – Building 29 South
2A Soil Gas Analytical Results – Building 29 North
2B Soil Gas Analytical Results – Building 29 Central
2C Soil Gas Analytical Results – Building 29 South
3 Groundwater Analytical Results – Volatile Organic Compounds List of Figures
Figure No. Title
1 Site Locus
2 Historical Environmental Site Features
3 Sample Location Map
4A TCE in Vadose Zone Soil – Building 29 North
4B TCE in Vadose Zone Soil – Building 29 Central
4C TCE in Vadose Zone Soil – Building 29 South
5 VOCs in Soil Gas Compared to Health-Based Remediation Goals 6 TCE in Zone A Groundwater
iv
List of Abbreviations
Abbreviation Definition
µg/L micrograms per liter
µg/m3
micrograms per cubic meter
1,1-DCA 1,1-dichloroethane
1,1-DCE 1,1-dichlorethene
1,1,1-TCA 1,1,1-trichloroethane
bgs below ground surface
CAO Cleanup and Abatement Order No. R9-2021-0042
cis-1,2-DCE cis-1,2-dichloroethene
City the City of Chula Vista
DEHQ San Diego Department of Environmental Health and Quality DEMP Demolition and Environmental Monitoring Plan
DTSC-SL California Department of Toxic Substances Control – Screening Level EPA U.S. Environmental Protection Agency
GPL Groundwater Protection Level
GSI GSI Environmental Inc.

H&P H&P Environmental Geochemistry
Haley & Aldrich Haley & Aldrich, Inc.

HBRGs Health-Based Remediation Goals
HHRA human health risk assessment
MCL Maximum Contaminant Level
mg/kg milligrams per kilogram
MSL mean sea level
OEHHA Office of Environmental Health Hazard Assessment
Owner PSIP Wohl Bay Boulevard LLC
PCE tetrachloroethene
PSA Purchase and Sale Agreement
PVC polyvinyl chloride
Raytheon Raytheon Technologies Corporation
Report “Data Gap Investigation Report”
Revised Updated CSM “Revised Updated Sitewide Conceptual Site Model” v
List of Abbreviations
Abbreviation Definition
RMP Risk Management Plan
Rohr Rohr, Inc., a Collins Aerospace Company
SAM Manual Site Assessment and Mitigation Manual
SDRWQCB San Diego Regional Water Quality Control Board
Site North Campus, 850 Lagoon Drive, Chula Vista, California Soil/Soil Gas CSM “Revised Conceptual Site Model“
SSDS sub-slab depressurization system
TCE trichloroethene
TTLC Total Threshold Limit Concentration
USCS Unified Soil Classification System
VOCs volatile organic compounds
Work Plan “Data Gap Investigation Work Plan”
1 1. Background
Haley & Aldrich, Inc., (Haley & Aldrich) is submitting this “Data Gap Investigation Report” (Report) on behalf of Rohr, Inc., a Collins Aerospace Company, (Rohr) for Parcel A at 850 Lagoon Drive in Chula Vista, California ([Site]; Figure 1). This Report was prepared pursuant to Directive C.2.b in Cleanup and Abatement Order No. R9-2021-0042 (CAO) issued to Rohr by the San Diego Regional Water Quality Control Board (SDRWQCB) on July 12, 2021, and in accordance with Raytheon Technologies Corporation’s (Raytheon) letter to the SDRWQCB dated August 25, 2021. This letter described the optional document submittals proposed by Raytheon under Directive L.1 to comply with the CAO. This is one of three data gap investigations to be completed to meet Directive C.2.b.

This Report summarizes the results of our data gap investigation described in the “Revised Data Gap Investigation Work Plan” (Work Plan) dated December 22, 2021 (Haley & Aldrich, 2021c). The Work Plan included sampling to fill data gaps on Parcel A identified in the “Revised Conceptual Site Model“ for soil and soil gas (Soil/Soil Gas CSM) submitted to the SDRWQCB on April 30, 2021, and the “Revised Updated Sitewide Conceptual Site Model” (Revised Updated CSM) submitted to the SDRWQCB on February 25, 2022. The Revised Updated CSM included Parcel A groundwater for the North Campus.

The data gaps addressed in this Report are specific to Building 29. In addition to reviewing the Revised Updated CSM, a further review and evaluation of existing data were conducted to identify whether there were other data gaps that needed to be addressed.

The SDRWQCB sent a letter to Raytheon on January 7, 2022, that it had no further comments on the Work Plan. As required by CAO Directive C.2.b, this Report includes the following:
 A detailed description of all activities completed to address the data gaps;  Supporting information such as boring logs, data tables, maps, and laboratory analytical data; and
 Results, conclusions, and recommendations.

Parcel A includes the properties occupied by the Buildings 29, 99, and 100 and the vacant properties located at 360, 364, and 368 Bay Boulevard (Figure 2). Rohr sold these properties to PSIP Wohl Bay Boulevard LLC (Owner), who intends to redevelop the properties for commercial/industrial use. The Owner will be constructing a new loading dock in the area currently occupied by the northern 24,000- square feet of Building 29. Construction will involve the removal of approximately 5 feet of soil in this area. The Owner has made improvements to the building that have included installing a new heating, ventilation and air conditioning system and sealing and polishing the concrete floor. The Owner is also required through the Purchase and Sale Agreement with Rohr to install a sub-slab depressurization system (SSDS) to address volatile organic compounds (VOCs) in soil gas that are present beneath the building slab.
2 1.1 SITE DESCRIPTION

1.1.1 Site History
Parcel A consists of two areas that have been part of Rohr’s manufacturing facility. Site historical environmental features on Parcel A are shown on Figure 2. Buildings 99 and 100 and the vacant properties are located north of G Street, and Building 29 is located south of G Street. Industrial activities and historical chemical use on Parcel A were more limited compared to the main manufacturing portions of the facility located on Parcel B and the former South Campus. Site history related to the vacant Bay Boulevard properties and Buildings 99 and 100 is described in the Soil/Soil Gas and Revised Updated CSMs and is not descried herein because the data gap investigation on Parcel A is specific to Building 29.

Building 29 was constructed in phases beginning in about 1957 through 1962. This portion of Parcel A was owned by others and used for other purposes prior to Rohr’s ownership (Adrian Brown, 1998; Woodward-Clyde Consultants, 1998; URS Corporation, 2013; Haley & Aldrich, 2016a, 2016b, 2018a, 2018b, 2021a, 2022). These other historical uses included agriculture, residential and a possible lumber yard. The agricultural use of the northern portion of Parcel A occupied by Building 29 appears to have taken place through the 1940s.

Building 29 was primarily used for tooling, machining, and office space for most of its history. At one time, the northernmost portion served as the Maintenance Department for the facility. Most recently the building housed laboratories, kitting, an After-Market Spares Warehouse, Service Center and FAI repairs, storage, tool calibration, product development, and office space.

Another former building (Building 28) was built on the southern portion of Parcel A in the mid-1940s and served as offices, including finance and payroll. The building was located south of Building 29 and was demolished around 2000. The area is now occupied by a parking lot.

1.1.2 Site Geology
Parcel A is situated at elevations ranging from approximately 13 feet above mean seal level (MSL) on the south and 28 feet above MSL on the north. Parcel A is underlain, in descending order, by limited fill material, the Bay Point Formation, a clay aquitard, and the San Diego Formation. Because Parcel A is more than 1,000 feet upland of the former shoreline, there are no bay muds or extensive fill present on this portion of the North Campus facility. It is underlain by localized fill material and the Bay Point Formation.

The Bay Point Formation can also be referred to as Quaternary alluvium, as suggested by Wes Danskin, formerly with the United States Geological Survey (W. Danskin, personal communication). The thickness of the Quaternary sediment can be highly variable in the San Diego embayment, ranging from approximately 200 feet to possibly as much as 700 feet. The Bay Point is Pleistocene in age and was deposited in nearshore marine and onshore fluvial depositional environments.

The Bay Point Formation consists of an interbedded sequence of clay, silt, and silty sand to the total depth explored (approximately 30 feet). The strata are predominantly composed of reddish brown to yellowish brown clay and silt with some thin, discontinuous lenses of silty sand. The coarser-grained lenses are typically saturated below a depth of approximately 12 feet below ground surface (bgs) on the 3 portion of the Site occupied by Building 29. Groundwater on the vacant Bay Boulevard properties and Buildings 99/100 on the northern portion of Parcel A is deeper (approximately 16 feet or greater).

1.1.3 Site Hydrogeology
Groundwater is present in the Bay Point Formation ranging in depth from approximately 10 to 20 feet bgs, based on observations during drilling and water levels in the wells north of Building 99. The thickness of the vadose zone on Parcel A ranges from approximately 10 to 20 feet based on this information. The direction of groundwater flow is generally to the west. Wells present on Parcel A have been limited to those installed for the San Diego Formation aquifer testing program (URS Greiner Woodward-Clyde, 1999). Two monitoring wells remain north of Building 99 and serve as upgradient wells. OW-3 is screened in Upper Zone B at 10 to 30 feet bgs, and OW-4 is screened in Lower Zone B at 60 to 80 feet bgs.

1.2 SITE ASSESSMENT AND REMEDIATION
Site assessment activities on Parcel A have included soil, soil gas, and groundwater sampling as well as indoor air screening (Building 29) and were described in the Soil/Soil Gas CSM (Haley & Aldrich, 2021a) and the Revised Updated Sitewide CSM (Haley & Aldrich, 2022). Figure 3 is a sample location map that shows previous sampling locations and those included in this data gap investigation. Those sample locations included in this data gap investigation are distinguished from previous sample locations on Figure 3 using colored symbols with exploration IDs.

Site assessment activities on Parcel A have included environmental due diligence for property sales, the removal of and/or closure of underground storage tanks, and investigations conducted pursuant to CAO No. 98-08 issued to Rohr by the SDRWQCB in 1998 (Haley & Aldrich, 2016a; 2018a; 2021a, 2022). In 1999, Rohr acquired the vacant Bay Boulevard properties from the City of Chula Vista (City) as part of the Relocation Agreement with the City and the San Diego Unified Port District (Haley & Aldrich, 2016b, 2018b). In the early 2000s, the City obtained a “No Further Action” letter from the San Diego County Department of Environmental Health for lead-containing surficial soil that was remediated at 360 Bay Boulevard. The vacant Bay Boulevard properties were not used by Rohr after acquiring the properties from the City.

GSI Environmental Inc. (GSI) conducted a Phase II screening investigation on Parcel A (excluding 360, 364, and 368 Bay Boulevard) in August 2020 on behalf of the Owner (GSI, 2020). The investigation included additional soil and soil gas sampling and analyses. Seventeen soil gas samples (including two duplicate samples) were collected at 15 locations from depths between approximately 3 and 5 feet bgs and analyzed for VOCs. Trichloroethene (TCE) was the constituent detected at the highest concentrations in both the GSI and Haley & Aldrich soil gas assessments. The soil gas results were consistent with the data collected by Haley & Aldrich in 2018.

1.3 HUMAN HEALTH RISK ASSESSMENT
Haley & Aldrich conducted a baseline human health risk assessment (HHRA) for Parcel A that was considered when developing the Work Plan for this data gap investigation. The HHRA included two exposure areas: Building 99/100 Area (including 360, 364, and 368 Bay Boulevard) and the Building 29 Area (Haley & Aldrich, 2021b). Two scenarios were considered for the Building 99/100 Area: the buildings remain with continued commercial/industrial use, or the buildings are razed, and the area 4 redeveloped as surface parking. The results of the HHRA for the Building 99/100 exposure area indicated that no remediation or mitigation was necessary to protect the on-Site receptors. As such, the data figures prepared for this investigation focus on the Building 29 Area only.

The HHRA for the Building 29 exposure area assumed that the northern portion of Building 29 would be demolished to construct a loading dock. We understand that the Owner will be constructing the loading dock later this year. Health-based remediation goals (HBRGs) for the Building 29 exposure area were developed to for the on-Site commercial/industrial worker. The soil gas HBRGs for bromodichloromethane, chloroform, cis-1,2-dichloroethene (cis-1,2-DCE), tetrachloroethene (PCE), and TCE are 70, 80, 100, 370, and 350 micrograms per cubic meter (µg/m3 ), respectively. An HBRG was
derived for TCE in soil to reduce estimated human health risks for the on-Site construction worker from exposure during the construction of the new loading dock. The HBRG for TCE is 1.5 milligrams per kilogram (mg/kg). The Office of Environmental Health Hazard Assessment (OEHHA) reviewed the HHRA and summarized its comments in a memorandum to the SDRWCB dated March 8, 2021 (OEHHA, 2021a).

Haley & Aldrich addressed OEHHA’s comments and resubmitted a revised HHRA to the SDRWQCB May 4, 2021. On June 30, 2021, the OEHHA issued a memorandum to the SDRWQCB regarding its review of the revised HHRA (OEHHA, 2021b). OEHHA calculated risk and hazard estimates that were consistent with those calculated by Haley & Aldrich in the HHRA.

Haley & Aldrich updated the HHRA to include the data collected during this data gap investigation. As requested by the SDRWQCB, the HHRA will be issued as a complete, updated standalone document.

The results of the update indicate that the HBRGs calculated for soil and soil gas at the Site remain unchanged. Therefore, the analytical results for the soil and soil gas samples collected during this data gap investigation are compared to these Site-specific values.

1.4 DATA GAPS
Historical chemical sources are coincident with former Site areas associated with long-term chemical usage, storage, and waste collection and discharge. As indicated in the Soil/Soil Gas and Revised Updated CSMs (Haley & Aldrich, 2021a, 2022), data gaps exist in vadose-zone soil, soil gas, indoor air, and groundwater in the Building 29 Area. These data gaps are associated with existing borings located at previously identified areas of concern. Data gaps in soil exist along the northern portion of Building 29 (historical borings B29-23 and B29-24) and in soil gas in the northern (historical probe PW-07), central (historical probes PW-09, B29-V09 and PW-12), and southern (historical probes PW-14, PW-15, B29-V16 and B29-V19) portions of Building 29. Soil gas is not a data gap in the northern portion of Building 29 where the new loading dock will be constructed since soil containing VOCs in this area will be remediated through excavation. A permanent monitoring well cluster has been installed in the vicinity of the northwestern portion of Building 29 where historical groundwater grab samples have been reported to contain TCE. Indoor air is also a data gap; however, sampling will be conducted in Building 29 once the building renovation has been completed, the impacted soil removed, and the SSDS installed prior to being occupied by a new tenant.

5 2. Scope of Work
Based on the data collected to date, the data gap investigation addressed vadose-zone soil, soil gas, and groundwater on the Building 29 Area of Parcel A. The scope of work described in the Work Plan included the following:
 Three step-out borings, advanced to approximately 5 feet bgs, adjacent to previous borings B29-23 and B9-24 where TCE in soil exceeds the Site-specific HBRG;  Thirteen soil gas probes, installed at approximately 3 feet bgs to further characterize soil gas beneath Building 29; and
 One monitoring well cluster, consisting of a Zone A well and Upper Zone B well to monitor VOC concentrations downgradient of soil sources in Building 29.

6 3. Field Investigation

3.1 PRE-FIELD ACTIVITIES
Haley & Aldrich conducted the following pre-field activities:
 Obtained a permit through the San Diego Department of Environmental Health and Quality ([DEHQ]; Permit No. LMWP-005376) for the borings from which groundwater samples were collected and the monitoring wells;
 Updated the Site-specific Health and Safety Plan;
 Notified Dig Alert at least 48 hours prior to the field work (Ticket No. A220600312-00A); and  Retained ULS CA, Inc., a utility locating subcontractor, to conduct a geophysical survey of the boring, soil gas probe, and monitoring well locations.

A copy of the DEHQ boring/well permit is provided in Appendix A. A 60-day report will be submitted to the DEHQ in accordance with the permit.

3.2 FIELD ACTIVITIES
The data gap investigation was conducted between March 4 and 29, 2022. Field procedures are described in the following sections.

3.2.1 Direct-Push Drilling and Sampling
Twenty-one borings were advanced using a direct-push rig by H&P Environmental Geochemistry (H&P), a California-licensed drilling subcontractor located in Carlsbad, California. H&P conducted concrete coring where necessary through Primetime Concrete Cutting of San Diego, California. The borings were logged by a Haley & Aldrich field geologist under the supervision of a California Certified Hydrogeologist in accordance with the Unified Soil Classification System (USCS; ASTM 2488-D). The number of samples collected and analyzed for each boring was evaluated based on field observations and photoionization detector readings. Boring logs are provided in Appendix B.

Four borings (DGA-005, DGA-012, DGA-018, and DGA-020) were converted to temporary groundwater wells to collect Zone A groundwater samples for analysis. The temporary groundwater wells consisted of 1-inch diameter, Schedule 40 polyvinyl chloride (PVC) pipe screened over the lower 5 feet.

Groundwater was allowed to enter the well screen and was subsequently collected with a disposable bailer that was decanted into laboratory-supplied bottles. Once the sampling activities were completed, the borings were backfilled with hydrated bentonite and capped with concrete to match the existing surface. The borings were drilled at the approximate locations shown on Figure 3.

3.2.2 Temporary Soil Gas Probe Installation and Sampling Thirty-two temporary soil gas probes were installed at 15 locations during the data gap investigation, four of which were installed as sub-slab at locations DGA-004, DGA-013, DGA-017, and DGA-021. The probe installation and soil gas sampling procedures were conducted in accordance with the July 2015 7 Department of Toxic Substances Control/Los Angeles Regional Water Quality Control Board document entitled, “Advisory – Active Soil Gas Investigations” (Cal/EPA 2015).

The sub-slab soil gas probes were installed by H&P to a depth of 1 foot below the bottom of the slab using a roto-hammer. Sand (1 to 6 inches) was placed in the bottom of the boring before installing ¼- inch-diameter Nylaflow® tubing fitted with a 1-inch-long non-reactive screen to prevent particulate infiltration. The annular space around the tubing was backfilled with approximately 2 to 6 inches of additional sand was then placed around the tubing inlet, and approximately 6 to 10 inches of dry granular bentonite was placed above the sand pack as a seal. The tubing was capped at the ground surface with airtight valves once installed.

The deeper, temporary soil gas probes were completed as a nested construction in a boring at depths of 2 and 5 feet bgs or 5 and 10 feet bgs. H&P installed the probes using a direct-push drill rig. Each probe consisted of a ¼-inch-diameter Nylaflow® tubing fitted with a 1-inch-long non-reactive screen to prevent particulate infiltration. The tubing was installed through the open boring to the desired bottom (i.e., 5 or 10 feet bgs) sampling depth. The boring was backfilled with 12 inches of sand pack around the screen, followed by 6 inches of dry bentonite. The boring was then filled with a hydrated bentonite seal to approximately 6 inches below the next targeted sampling depth. The shallow vapor probe (i.e., 2 or 5 feet bgs) was then installed in the same fashion as the deeper probe. Once the soil gas probe was completed, the tubing was capped with an air-tight valve. A schematic showing the typical soil gas probe constructions are provided in Appendix C.

Each temporary soil gas and sub-slab probe was allowed to equilibrate for a minimum of two hours prior to purging and sampling. Following two hours, each soil gas probe was leak-checked, and a shut-in test was performed prior to purging three purge volumes and sampling. One purge volume includes the volume of the interior tube and probe tip as well as the void space of the sand pack surrounding it. Each soil gas sample was collected in a glass syringe for analysis by H&P’s on-Site mobile laboratory. Once the soil gas sampling was completed, the tubing was removed, and the borings were backfilled using hydrated bentonite and capped at the surface with concrete.

3.2.3 Well Cluster Installation
One cluster well was installed to monitor the dissolved TCE plume in Zone A and Upper Zone B groundwater downgradient (west) of soil and soil gas impacts in the northwestern portion of Building 29 at the location shown on Figure 3. The cluster well was installed by Cascade Environmental a Californialicensed drilling subcontractor located in Upland, California. The drilling was observed by a Haley & Aldrich field engineer under the oversight of a California Certified Hydrogeologist. The field engineer logged the Upper Zone B boring in accordance with the USCS (ASTM 2488-D). The Zone A well was not logged since it is immediately adjacent to the Upper Zone B well. Monitoring well logs are provided in Appendix B.

The wells were installed using a hollow-stem auger drill rig equipped with 8-inch-diameter augers. The wells were constructed of 4-inch-diameter, Schedule 40 PVC casing with the lower 10 feet consisting of

0.010-inch slots. The well annulus was backfilled with Lonestar No. 2/12 sand to a level of approximately 2 feet above the screen. A 2- to 3-foot bentonite seal was placed above the filter pack.

The remainder of the annulus was backfilled with concrete into which a traffic-rated cover was set in accordance with the DEHQ Site Assessment and Mitigation (SAM) Manual. 8 Once installed, the wells were developed by surging and bailing until the water was free of fine-grained sediment and turbidity. Well development logs are provided in Appendix D. Each was purged by the low-flow method described in the SAM Manual. Depth to water was measured to the nearest 0.01 foot using an electronic water level indicator. The monitoring wells will be added to AECOM’s groundwater monitoring and sampling program and sampled later this year.

3.3 WORK PLAN MODIFICATIONS
Additional soil, soil gas and groundwater sampling were conducted to assess the vertical extent of VOC concentrations in vadose-zone soil and evaluate whether the VOCs in soil gas may be attributed to soil impacts not previously identified or off-gassing from shallow groundwater. To accomplish this, Haley & Aldrich installed:
 Dual gas probes at ten locations at approximately 2 and 5 feet bgs;  Triple gas probes at 4 locations at approximately 1 (sub-slab), 5, and 10 feet bgs; and  Temporary wells at 4 locations to sample and analyze first encountered groundwater. Previous groundwater sampling on Parcel A was conducted at depths ranging from 20 to 25 feet and did not represent first encountered groundwater.

The dual and triple gas probes were completed rather than sampling at a single sampling depth of 3 feet bgs as proposed in the Work Plan. Soil samples at each probe depth and the first encountered groundwater samples were analyzed for VOCs by U.S. Environmental Protection Agency (EPA) Method 8260B.

3.4 INVESTIGATION-DERIVED WASTE
Investigation-derived waste was managed in accordance with CAO Directive L.2. Soil cuttings were placed in Department of Transportation-approved 55-gallon drums and temporarily stored at a location north of Building 29. The soil cuttings (8 drums), asphalt (5 drums) and wastewater (5 drums) were profiled and disposed as Non-Department of Transportation/Non-Resource Conservation Recovery Act waste by Heritage at the Rineco facility in Benton, Arkansas. Copies of manifests are provided in Appendix E.

3.5 PROFESSIONAL SURVEY
The direct-push borings, temporary probe locations, and the monitoring wells were professionally surveyed on March 29, 2022, by J.B. Koenig and Associates of Anaheim, California. Some of the boring and probe locations from past investigations were also professionally surveyed. Top-of-cover and topof-casing elevations for the two new monitoring wells were professionally surveyed. A copy of the survey is provided in Appendix F.

9 4. Laboratory Analyses and Results

4.1 LABORATORY ANALYSES
Soil and groundwater laboratory analyses were performed by Eurofins Calscience of Tustin, California, and soil gas samples were analyzed by H&P’s mobile laboratory located on Site. Each laboratory is Environmental Laboratory Accreditation Program-certified as required by Directive L.4 of the CAO. The analyses were conducted using analytical methods approved by the EPA for the analyses performed.

Laboratory reports include the information specified in Directive L.5 of the CAO.

Soil samples from the direct-push and well cluster borings were analyzed for VOCs by EPA Method 8260B. The soil gas samples were analyzed for VOCs by EPA Method 8260B. Groundwater samples from the temporary wells were also analyzed for VOCs by EPA Method 8260B.

Groundwater samples from the well cluster will be collected and analyzed by AECOM as part of the groundwater monitoring and sampling program (AECOM, 2017). The groundwater samples will be analyzed for VOCs, 1,4-dioxane, Title 22 Metals, and hexavalent chromium by EPA Methods 8260B, 8260B-SIM, 6000/7000 series, and 7199, respectively. The analytical results will be included in the Annual Groundwater Monitoring Report prepared by AECOM.

4.2 LABORATORY ANALYTICAL RESULTS
Laboratory analytical reports and chain of custody forms for soil and groundwater samples analyzed during the data gap investigations are provided in Appendix G. Soil gas sample analytical reports and chain of custody forms are provided in Appendix H. Tables summarizing soil and soil gas data collected during this investigation are included in Appendix I. The data in the tables in Appendix I are arranged based on the location in Building 29: south, central and north.

4.2.1 Soil
Soil analytical results summarized in Table I-1 indicate that detectable VOC concentrations in the borings drilled during this data gap investigation were very limited. TCE concentrations reported in the soil samples analyzed during this and previous investigations in Building 29 are shown on Figures 4A, 4B and 4C for the northern, central and southern portions of Building 29, respectively. Ranges in TCE concentrations are noted showing a color gradation for the boring locations so that the HBRG and Groundwater Protection Level (GPL) soil exceedances can be easily identified.

One or more VOCs were detected in 11 of 52 samples analyzed. The compounds detected (with the number of samples in parentheses) and detected ranges were as follows:
 TCE (11): ranging from 0.0029 mg/kg to 0.58 mg/kg;
 Chloroform (4): ranging from 0.0011 mg/kg to 0.0024 mg/kg;  Cis-1,2-DCE (1): 0.0027 mg/kg; and
 PCE (1): 0.0011 mg/kg.
10 The highest TCE soil concentrations were detected in the step-out borings in DGA-024 (1 foot bgs; 0.43 mg/kg) and DGA-025 (1.5 feet bgs; 0.58 mg/kg), situated around B29-23 and B29-24 in the northern portion of the building (Former Maintenance Department). Acetone was also reported in 7 soil samples at low concentrations (at or slightly above the reporting limit) ranging from 0.021mg/kg to 0.054 mg/kg.

Acetone detected at low concentrations is often a laboratory contaminant.

4.2.2 Soil Gas
The soil gas sample analytical results are summarized in Table I-2. One or more VOC was reported in each of the samples analyzed during the data gap investigation. The VOCs detected included PCE, TCE, cis-1,2-DCE, trans-1,2-DCE, 1,1,1-trichloroethane (1,1,1-TCA), 1,1-dichloroethane (1,1-DCA), 1,1- dichlorethene (1,1-DCE), chloroform, vinyl chloride, benzene, toluene, and 1,1 difluoroethane. The number of locations (indicated in parentheses) and ranges in the VOC concentrations reported in the soil gas samples were the following:
 TCE (12): 33 to 18,000 µg/m3;
 PCE (7): 20 to 770 µg/m3;
 Chloroform (7): 23 to 190 µg/m3;
 1,1,1-TCA (4): 140 to 3,300 µg/m3;
 Cis-1,2-DCE (3): 180 to 140,000 µg/m3;
 Vinyl chloride (2): 30 to 420 µg/m3;
 1,1-DCA (2): 100 to 750 µg/m3;
 1,1-DCE (2): 130 to 650 µg/m3;
 Benzene (13): 20 to 89 µg/m3;
 Toluene (2): 200 to 230 µg/m3; and
 1,1-Difluoroethane (1); 110 µg/m3.
11 5. Discussion

5.1 SOIL
The Site soil data have been compared to the following:
 HBRGs developed in the HHRA prepared by Haley & Aldrich and dated May 4, 2021 (Haley & Aldrich, 2021b),
 GPLs developed for the Former South Campus for VOCs (Haley & Aldrich, 2014a, 2014b),  Total Threshold Limit Concentration (TTLCs) appearing in California Code of Regulations (CCR) Title 22 Section 66261.24 – Characteristic of Toxicity.

The VOC GPLs for the Former South Campus should be relevant for the North Campus since the operations were the same as the South Campus (they were the same facility) and the hydrogeology and soil types are very similar. GPLs for vadose zone soil are summarized in Table 10 of the “Revised Soil Remedial Action Plan” for the northern portion of the South Campus (Haley & Aldrich, 2018c). The HHRA developed an HBRG for TCE for the construction worker scenario. This HBRG is 1.5 mg/kg. The GPLs and TTLCs for VOCs are included in Table I-1. Table I-1 also includes the commercial/industrial California Department of Toxic Substances Control – Screening Levels (DTSC-SLs) for reference only, since a Site-specific HBRG for TCE was developed in the HHRA.

Table 1A summarizes the TCE analytical results for the data gap borings in the Former Maintenance Department, referred to as the northern portion of Building 29. The results for step-out borings follow to the right of the previous exceedances in Table 1A. The previous borings with TCE HBRG and GPL exceedances are noted for the northern portion of Building 29 in blue at the top of Table 1A.

It should be noted that there were no TCE HBRG or GPL exceedances in soil elsewhere in Building 29.

The additional soil samples analyzed in Building 29 were not step-out borings, but were drilled and sampled to identify whether there may be VOC sources in soil that are associated with the VOCs that have been reported in soil gas in these areas. Therefore, the full list of VOCs is reported in Tables 1B and 1C for the central and southern portions of Building 29, respectively.

As shown in Table 1A, none of the TCE soil concentrations in the step-out samples around borings B29-23 and B29-24 analyzed during the data gap investigation exceeded the HBRG of 1.5 mg/kg. None of the VOCs exceeded its respective commercial/industrial DTSC-SL, GPL, or TTLC (see Table I-1). The step-out borings in the northern portion of the building (DGB-024, DGB-025, and DGB-026, see Table 1A and Figure 4A) have delineated TCE impacts in the Former Maintenance Department, considering that TCE-containing soil that lies beneath this portion of Building 29 will be removed during construction of a new loading dock by the Owner. This TCE-containing soil appears to extend to a depth less than 4 feet bgs based on the soil analytical results for the borings in the Former Maintenance Department.

The soil analytical results for the temporary soil gas probes in the central and southern portions of the building (see Tables 1B and 1C and Figures 4B and 4C) have not identified additional soil sources that could be contributing to VOCs observed in soil gas in these areas. Based on the results of this data gap investigation, no further soil investigation is recommended at this time. 12 Soil beneath the northern portion of Building 29 will be excavated and removed under a Demolition and Environmental Management Plan (DEMP). Construction will require excavation to an approximate depth of 5 feet bgs in the northern 24,000 square feet of Building 29. Following excavation, confirmation sampling will be conducted. The soil will be disposed at an appropriate landfill. As a result of this remedial action, a source of VOCs in soil and soil gas will be removed and therefore no longer pose a potential vapor intrusion risk to building occupants.

5.2 SOIL GAS
Step-out soil gas samples were collected and analyzed in the vicinity of previous locations where certain VOCs were reported at concentrations that exceeded their respective HBRGs developed in the HHRA.

These previous locations in Building 29 included:
 North: PW-07;
 Central: PW-09, B29-V09, and PW-12; and,
 South: PW-14, PW-15, B29-V16, and B29-V19.

VOCs in B29-V07 and PW-06 were also reported to exceed HRBGs but were not investigated because the building will be demolished and the VOC-containing soil in this area will be excavated to construct the new loading dock that was previously described.

As noted in Section 1.3, the HRBGs derived for soil gas in the HHRA included the following:
 Bromodichloromethane – 70 µg/m3;
 Chloroform – 80 µg/m3;
 Cis-1,2-DCE – 100 µg/m3;
 PCE – 370 µg/m3; and
 TCE - 350 µg/m3.

Tables 2A, 2B, and 2C summarize the soil gas analytical results for the samples collected and analyzed during this data gap investigation for the northern, central, and southern portions of Building 29, respectively. The tables include those VOCs that have exceeded their respective soil gas HBRGs in Building 29. Previous locations with HBRG exceedances are included in the tables and noted at the top of the tables in blue. Step-out borings associated with these previous borings are noted at the top of the tables in yellow. Figure 5 compares reported VOC concentrations to their respective HBRGs. The VOCs and concentrations that exceeded their respective HBRGs are noted on the figure.

VOCs were reported in the step-out and other soil gas probes at concentrations that exceed their respective HBRGs, but in general, the concentrations showed a decrease compared to the previous borings. In the northern portion of Building 29 (Table 2A), step-out probes DGA-021 and DGA-022 were advanced adjacent to PW-07. HBRG exceedances were noted for chloroform (DGA-022), PCE (DGA-021), and TCE (DGA-021 and DGA-022).

In the central portion of Building 29 (Table 2B), the step-outs at DGA-013, DGA-014, and DGA-015 were sampled to provide further horizontal and vertical assessment in the vicinity of previous probe PW-12, where certain VOCs exceeded their respective HBRGs. No VOCs exceeded their respective HBRGs at the step-out locations. Step-out probes DGA-016, DGA-017, and DGA-019 were advanced in the vicinity of 13 PW-09 and B29-V09. HBRG exceedances were noted for chloroform (DGA-017) and TCE (DGA-016, DGA-017, and DGA-019). TCE concentrations reported for the step-out probes were lower than those reported in PW-09 and B29-V09.

In the southern portion of Building 29 (Table 2C), temporary soil gas probes at DGA-003, DGA-004, DGA007, DGA-008, DGA-009, and DGA-011 were installed and sampled to provide further horizontal and vertical assessment of VOCs in soil gas at previous borings PW-14, PW-15, B29-V16, and B29-V19. HBRG exceedances in soil gas were noted for chloroform (DGA-007), cis-1,2-DCE (DGA-004, DGA-009, and DGA-011), and TCE (DGA-004, DGA-007, DGA-008, DGA-009, and DGA-010). No VOCs were reported at DGA-003 in concentrations exceeding HBRGs.

The Owner will address potential vapor intrusion risk by installing an SSDS in Building 29 prior to building occupancy by a new tenant. The SSDS is a requirement of the Purchase and Sale Agreement (PSA) for Parcel A between Rohr and the Owner.

5.3 GROUNDWATER
Groundwater samples were collected at four locations to evaluate whether VOC soil gas concentrations may be attributed to off-gassing from shallow groundwater at locations where certain soil gas samples exceeded HBRGs. Groundwater sample analytical results are summarized in Table 3. The samples were collected in the following portions of Building 29: north (DGA-020, in an area that will remain after constructing the new loading dock), central (DGA-012 and DGA-018), and south (DGA-005). Of the four groundwater samples analyzed, three (DGA-005, DGA-018, and DGA-020) contained TCE above its Maximum Contaminant Level (MCL) for drinking water at concentrations ranging from 7.2 to 340 micrograms per liter (µg/L). The groundwater sample from DGA-005 also exceeded the MCL for cis-1,2- DCE (38 µg/L) and 1,1-DCA (6.8 µg/L). The groundwater sample from DGA-005 was the only sample that exceeded a commercial/industrial vapor intrusion Environmental Screening Level (TCE, 340 µg/L). DGA005 is immediately downgradient (west) of the former Blanchard Grinder that was closed in place under permit with the Department of Environmental Health in 1999.

Groundwater is present beneath the Site at depths greater than 10 feet bgs. A composite TCE groundwater contour map is provided as Figure 6. The figure shows groundwater TCE concentrations detected in the data gap and previous groundwater samples analyzed on the Building 29 portion of Parcel A. VOCs present in groundwater are contributing to potential vapor intrusion risks for future building occupants based on the soil gas results for 10-foot probes sampled in the northern and southern portions of Building 29. The SSDS installed by the Owner will address the potential future vapor intrusion risk to building occupants that may result from VOC off-gassing from groundwater. 14 6. Conclusions and Recommendations
The results of the Parcel A data gap investigation indicate the following for soil, soil gas, and Zone A groundwater:

6.1 SOIL
TCE exceeding the HBRG in the Former Maintenance Department in the northern portion of Building 29 has been delineated. None of the samples collected from the step-out borings (DGA-024, DGA-025, and DGA-026) were reported to contain TCE or other VOCs at concentrations above its respective HBRG, commercial/industrial DTSC-SL, GPL, or TTLC. Based on the data for the Former Maintenance Department, the area with soil impacts is limited to depths less than 4 feet bgs. VOC concentrations beneath the central and southern portions of Building 29 were either not detected in soil, or the concentrations were relatively low, supporting that soil is not a significant VOC source contributing to those present in soil gas.

As discussed with the SDRWQCB, the affected soil in the Former Maintenance Department (northern portion of Building 29) will be excavated under a DEMP during construction of the new loading dock.

The DEMP will be prepared and submitted to the SDRWQCB for approval. The DEMP will be implemented during the loading dock construction project prior to removing the building slab in this area. The upper 5 feet of soil is planned to be excavated in a 24,000-square-foot area on the northern end of Building 29 and will address TCE impacts to soil that data indicate are limited to depths shallower than 4 feet. Following excavation, soil confirmation sampling will be conducted. The excavated soil will be disposed at a permitted landfill. Based on the results of the data gap investigation and the proposed remedial action that will be completed through implementing the DEMP, no further soil investigation on Parcel A is necessary at this time.

6.2 SOIL GAS
The data indicate that there are soil gas VOC concentrations that are above the HBRGs beneath the building. The excavation of soil sources when implementing the DEMP and installing an SSDS below the building slab as required by the PSA between Rohr and the Owner will address the potential for vapor intrusion and be protective of future building occupants. Based on these remedial and mitigation actions, no further soil gas investigation is recommended at this time.

A plan will be submitted that will describe the installation and footprint of the SSDS. Indoor air sampling will be conducted in Building 29 prior to occupancy by a new tenant as required by the CAO. A Risk Management Plan (RMP) will also be prepared and implemented to address potential future vapor intrusion risk to building occupants. The RMP will include:
 An SSDS post-installation monitoring and performance evaluation plan that will describe and establish a sub-slab soil gas and indoor air monitoring and sampling program;  Restrictions on changes to the existing building;
 A Contingency Plan;
 Post-installation monitoring and performance reports, and a Post-Mitigation Completion Report; and
15  The preparation and filing of a deed restriction that refers to the RMP.

6.3 GROUNDWATER
The VOCs in groundwater detected at the four locations sampled during the data gap investigation were relatively low, delineating groundwater impacts beneath Building 29 in the Former Maintenance Department in the northern portion of the building where there are TCE soil and soil gas impacts, and the central and southwestern portion of the building where there are lesser groundwater and soil gas impacts. Based on these and previous groundwater analytical results, groundwater off-gassing appears to contribute to the VOCs reported in soil gas beneath the northern and southwestern portions of Building 29. The potential for future vapor intrusion risk to building occupants will be addressed by installing the SSDS and implementing the RMP previously described.

Groundwater monitoring will be conducted in well cluster NCW-021 downgradient (west) of the existing soil sources in Building 29. These wells will be sampled as part of the annual groundwater monitoring program performed by AECOM for the facility (AECOM, 2017). Analytical results for the parameters indicated in the Work Plan will be included in the next annual groundwater monitoring report.

16 References

1. Adrian Brown Consultants, 1998. ASTM Phase I Site Assessment, B.F. Goodrich Aerospace, 850 Lagoon Drive, Chula Vista, California. June 4.

2. AECOM, 2017. Revised Groundwater Monitoring Program Modifications, North Campus, Chula Vista, California. June 21.

3. California Environmental Protection Agency (Cal/EPA), 2015. “Advisory – Active Soil Gas Investigation,” July.

4. GSI Environmental Inc., 2020. Limited Phase II Screening Site Investigation, Rohr, Inc. a Collins Aerospace Company, Parcel A, North Campus, 850 Lagoon Drive and 390 Bay Blvd., Chula Vista, California. September 11.

5. Haley & Aldrich, Inc., 2014a. Derivation of Site-specific Groundwater Quality Protection Levels for Vadose Zone Soil, South Campus Property, Chula Vista, California. January 30.

6. Haley & Aldrich, Inc., 2014b. Revised Derivation of Site-specific Groundwater Quality Protection Levels for Vadose Zone Soil, South Campus Property, Chula Vista, California. November 11.

7. Haley & Aldrich, Inc., 2016a. ASTM Phase I Environmental Site Assessment, Rohr Property IDs 7 and 15 (Eastern Portion), Chula Vista. July 21.

8. Haley & Aldrich, Inc., 2016b. ASTM Phase I Environmental Site Assessment, Rohr Property IDs 4, 5, 6, 8, 9, 10, and 11, Chula Vista. July 21.

9. Haley & Aldrich, Inc., 2018a. Phase II Environmental Site Assessment, Buildings 99 and 29, 850 Lagoon Drive, Chula Vista, California, GeoTracker Global ID# T10000011095. January 11.

10. Haley & Aldrich, Inc. 2018b. Phase II Environmental Site Assessment, Vacant Bay Boulevard Properties, 300 Block, Bay Boulevard, Chula Vista, California, GeoTracker Global ID# T10000011095. January 11.

11. Haley & Aldrich, Inc., 2018c. Revised Soil Remedial Action Plan, Former South Campus, North of Exchange Parcel, Chula Vista, California. April 20.

12. Haley & Aldrich, Inc., 2021a. Revised Conceptual Site Model, Rohr, Inc., North Campus, Parcel A, 850 Lagoon Drive, Chula Vista, California, GeoTracker ID: T10000011095. April 30.

13. Haley & Aldrich, Inc., 2021b. Revised Baseline Human Health Risk Assessment, Rohr, Inc. - North Campus, Parcel A, 850 Lagoon Drive, Chula Vista, California. May 4.

14. Haley & Aldrich, Inc., 2021c. Revised Data Gap Investigation Work Plan, Rohr, Inc. - North Campus, Parcel A, 850 Lagoon Drive, Chula Vista, California. December22.

15. Haley & Aldrich, 2022. Updated Sitewide Conceptual Site Model, Rohr, Inc., North Campus, 850 Lagoon Drive, Chula Vista, California, GeoTracker ID: T10000001489. February 25. 17 References

16. Office of Environmental Health Hazard Assessment, 2021a. Baseline Human Health Risk Assessment (North Campus - Parcel A) – 850 Lagoon Drive, Chula Vista, California. SWRCB #R9- 20-01. OEHHA #880129-13. March 8.

17. Office of Environmental Health Hazard Assessment, 2021b. Baseline Human Health Risk Assessment (North Campus - Parcel A) – 850 Lagoon Drive, Chula Vista, California. SWRCB #R9- 20-01. OEHHA #880129-13. June 30.References

18. URS Corporation, 2013. Phase I Environmental Site Assessment, UTAS – Chula Vista, 850 Lagoon Drive Chula Vista, California 91910. April 2.

19. URS Greiner Woodward-Clyde, 1999. Report of Subsurface Investigation, BFGoodrich Aerospace Facility, Chula Vista, California. January 12.

20. Woodward-Clyde Consultants, 1998. Data Compilation and Evaluation Report, Rohr, Inc., Chula Vista, California.” May 27.
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TABLES
TABLE 1A
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 NORTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

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Location
Sample Name B29-23-010 B29-23-050 B29-24-010 B29-24-050 DGA‐024‐1 DGA‐024‐3 DGA‐024‐4.5 DGA‐025‐1.5 DGA‐025‐3 DGA‐025‐5 Sample Date 1/10/2020 1/10/2020 1/14/2020 1/14/2020 03/10/2022 03/10/2022 03/10/2022 03/10/2022 03/10/2022 03/10/2022 Sample Depth (bgs) 1 (ft) 5 (ft) 1 (ft) 5 (ft) 1 (ft) 3 (ft) 4.5 (ft) 1.5 (ft) 3 (ft) 5 (ft) Trichloroethene (see Note 2) ‐ 27 6 3 2040 37.8 [A,B] 0.0502 7.83[B] 0.0925 0.43 0.16 0.041 0.58 0.051 0.033 Notes:1. Detected results were screened against the following criteria. Exceedances are shaded gray and flagged in [ ]:
[A]: Result is greater than Groundwater Protection Level (GPL), (Haley & Aldrich 2014a, 2014b). [B]: Result is greater than Commercial/Industrial Department of Toxic Substances Control Screening Level, HHRA Note 3, June 2020 ‐ Revised May 2022. [C]: Result is greater than Total Threshold Limit Concentration (TTLC), CCR Title 22 Section 66261.24.

2. Detected results for trichloroethene (TCE) were also compared to the Health‐Based Remediation Footnotes:
1 Site background2 Cancer Endpoint. If there is no Cancer Endpoint, the Noncancer Endpoint is noted.3 U.S. EPA Region 9 Remediation Screening Level Abbreviations:

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

F2 = MS/MSD RPD exceeds control limits
*+ = LCS and/or LCSD is outside acceptance limits, high biased. ‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

Previous Borings
DGA‐024 DGA‐025
Step‐out Borings
B29-23 B29-24
Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1a.xlsx JUNE 2022
TABLE 1A
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 NORTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 2 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Trichloroethene (see Note 2) ‐ 27 6 3 2040
Notes:1. Detected results were screened against the following criteria. Exceedances are shaded gray and flagged in [ ]:
[A]: Result is greater than Groundwater Protection Level (GPL), (Haley & Aldrich 2014a, 2014b). [B]: Result is greater than Commercial/Industrial Department of Toxic Substances Control Screening Level, HHRA Note 3, June 2020 ‐ Revised May 2022. [C]: Result is greater than Total Threshold Limit Concentration (TTLC), CCR Title 22 Section 66261.24.

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐026‐3 DGA‐026‐4.5 DGA‐026‐6 DGA‐021‐1 DGA‐021‐5 DGA‐021‐10 DGA‐022‐1 DGA‐022‐5 DGA‐022‐10 03/10/2022 03/10/2022 03/10/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 3 (ft) 4.5 (ft) 6 (ft) 1 (ft) 5 (ft) 10 (ft) 1 (ft) 5 (ft) 10 (ft)

0.0042 F2 0.0045 0.0034 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 DGA‐026
Step‐out Borings
DGA‐021 DGA‐022
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1a.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 9 ends

Location
Sample Name DGA‐013‐1 DGA‐013‐5 DGA‐013‐10 DGA‐014‐3.5 DGA‐014‐5 DGA‐014‐10 Sample Date 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 Sample Depth (bgs) 1 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 10 (ft) Volatile Organic Compounds (mg/kg)
1,1,1,2‐Tetrachloroethane ‐‐ 8.8 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 1,1,1‐Trichloroethane ‐ 1.7 7200 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,1,2,2‐Tetrachloroethane ‐‐ 2.7 ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 1,1,2‐Trichloroethane ‐ 0.04 5 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 1,1‐Dichloroethane ‐ 0.56 16 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,1‐Dichloroethene ‐ 0.071 350 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,1‐Dichloropropene ‐ ‐‐ ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 1,2,3‐Trichlorobenzene ‐‐ 300 ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.0021,2,3‐Trichloropropane ‐‐ 0.021 ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.0021,2,4‐Trichlorobenzene ‐ 0.818 35 ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.0021,2,4‐Trimethylbenzene ‐‐ 1800 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.0021,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐ 0.057 ‐ 10 < 0.0099 < 0.0098 < 0.0098 < 0.0097 < 0.01 < 0.011,2‐Dibromoethane (Ethylene Dibromide) ‐‐ 0.16 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 1,2‐Dichlorobenzene ‐ 28 9300 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,2‐Dichloroethane ‐ 0.0028 2 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,2‐Dichloropropane ‐‐ 11 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,3,5‐Trimethylbenzene ‐‐ 1500 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 1,3‐Dichlorobenzene ‐ ‐‐ ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 1,3‐Dichloropropane ‐‐ 2200 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0011,4‐Dichlorobenzene ‐ 0.23 11 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0012,2‐Dichloropropane ‐ ‐‐ ‐ ‐ < 0.0049 < 0.0049 < 0.0049 < 0.0049 < 0.005 < 0.005 2‐Butanone (Methyl Ethyl Ketone) ‐‐ 190000 3 ‐ < 0.02 < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 2‐Chlorotoluene ‐‐ 2500 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 2‐Hexanone (Methyl Butyl Ketone) ‐‐ 1300 3 ‐ < 0.02 < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 2‐Phenylbutane (sec‐Butylbenzene) ‐‐ 12000 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 4‐Chlorotoluene ‐‐ 2300 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.0014‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐‐ 140000 3 ‐ < 0.02 < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 Acetone ‐‐ 1100000 3 ‐ < 0.02 < 0.02 < 0.02 < 0.019 < 0.02 < 0.02Benzene ‐ 0.019 1.4 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Bromobenzene ‐‐ 1800 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001Bromodichloromethane ‐‐ 1.3 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐013 DGA‐014
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 9 ends

Location
Sample Name DGA‐013‐1 DGA‐013‐5 DGA‐013‐10 DGA‐014‐3.5 DGA‐014‐5 DGA‐014‐10 Sample Date 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 Sample Depth (bgs) 1 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 10 (ft) Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐013 DGA‐014
Bromoform ‐‐ 86 ‐ ‐ < 0.0049 < 0.0049 < 0.0049 < 0.0049 < 0.005 < 0.005 Bromomethane (Methyl Bromide) ‐‐ 30 3 ‐ < 0.02 < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 Carbon disulfide ‐‐ 3500 3 ‐ < 0.0099 < 0.0098 < 0.0098 < 0.0097 < 0.01 < 0.01 Carbon tetrachloride ‐‐ 2.9 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Chlorobenzene ‐ 2 1300 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001Chlorobromomethane ‐‐ 630 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 Chloroethane ‐‐ 23000 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002Chloroform (Trichloromethane) ‐‐ 1.4 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Chloromethane (Methyl Chloride) ‐‐ 460 3 ‐ < 0.02 < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 cis‐1,2‐Dichloroethene ‐ 4.9 84 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 cis‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001Cymene (p‐Isopropyltoluene) ‐ ‐‐ ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001Dibromochloromethane ‐‐ 4.1 ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 Dibromomethane ‐‐ 99 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Dichlorodifluoromethane (CFC‐12) ‐‐ 370 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 Ethylbenzene ‐ 7.7 25 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Isopropylbenzene (Cumene) ‐‐ 9900 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001m,p‐Xylenes ‐ 6 ‐ ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 Methyl Tert Butyl Ether (MTBE) ‐‐ 210 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002Methylene chloride (Dichloromethane) ‐ 0.019 26 ‐ ‐ < 0.0099 < 0.0098 < 0.0098 < 0.0097 < 0.01 < 0.01 Naphthalene ‐‐ 6.5 ‐ ‐ < 0.0099 < 0.0098 < 0.0098 < 0.0097 < 0.01 < 0.01n‐Butylbenzene ‐‐ 18000 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 n‐Propylbenzene ‐‐ 24000 3 ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 o‐Xylene ‐ 6 2800 3 ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001 Styrene ‐‐ 32000 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001tert‐Butylbenzene ‐‐ 12000 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001Tetrachloroethene ‐ 2.1 2.7 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001Toluene ‐ 0.44 5300 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001trans‐1,2‐Dichloroethene ‐ 0.17 600 ‐ ‐ < 0.00099 < 0.00098 < 0.00098 < 0.00097 < 0.001 < 0.001trans‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐ < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 Trichloroethene (see Note 2) ‐ 27 6 3 2040 < 0.002 < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 3 of 9 ends

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 4 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
1,1,1,2‐Tetrachloroethane ‐‐ 8.8 3 ‐
1,1,1‐Trichloroethane ‐ 1.7 7200 ‐ ‐1,1,2,2‐Tetrachloroethane ‐‐ 2.7 ‐ ‐1,1,2‐Trichloroethane ‐ 0.04 5 3 ‐1,1‐Dichloroethane ‐ 0.56 16 ‐ ‐1,1‐Dichloroethene ‐ 0.071 350 ‐ ‐1,1‐Dichloropropene ‐ ‐‐ ‐ ‐1,2,3‐Trichlorobenzene ‐‐ 300 ‐ ‐1,2,3‐Trichloropropane ‐‐ 0.021 ‐ ‐1,2,4‐Trichlorobenzene ‐ 0.818 35 ‐ ‐1,2,4‐Trimethylbenzene ‐‐ 1800 3 ‐1,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐ 0.057 ‐ 10 1,2‐Dibromoethane (Ethylene Dibromide) ‐‐ 0.16 ‐ ‐
1,2‐Dichlorobenzene ‐ 28 9300 3 ‐1,2‐Dichloroethane ‐ 0.0028 2 3 ‐1,2‐Dichloropropane ‐‐ 11 3 ‐1,3,5‐Trimethylbenzene ‐‐ 1500 3 ‐1,3‐Dichlorobenzene ‐ ‐‐ ‐ ‐1,3‐Dichloropropane ‐‐ 2200 ‐ ‐1,4‐Dichlorobenzene ‐ 0.23 11 3 ‐2,2‐Dichloropropane ‐ ‐‐ ‐ ‐2‐Butanone (Methyl Ethyl Ketone) ‐‐ 190000 3 ‐2‐Chlorotoluene ‐‐ 2500 ‐ ‐2‐Hexanone (Methyl Butyl Ketone) ‐‐ 1300 3 ‐2‐Phenylbutane (sec‐Butylbenzene) ‐‐ 12000 ‐ ‐4‐Chlorotoluene ‐‐ 2300 ‐ ‐4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐‐ 140000 3 ‐Acetone ‐‐ 1100000 3 ‐Benzene ‐ 0.019 1.4 ‐ ‐Bromobenzene ‐‐ 1800 3 ‐Bromodichloromethane ‐‐ 1.3 ‐ ‐ Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐015‐1 DGA‐015‐5 DGA‐015‐10 DGA‐016‐1 DGA‐016‐5 DGA‐016‐10 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 1 (ft) 5 (ft) 10 (ft) 1 (ft) 5 (ft) 10 (ft)
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.005 < 0.005 < 0.0049 < 0.0049 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 ‐015 DGA‐016DGA
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 5 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
Bromoform ‐‐ 86 ‐ ‐
Bromomethane (Methyl Bromide) ‐‐ 30 3 ‐Carbon disulfide ‐‐ 3500 3 ‐Carbon tetrachloride ‐‐ 2.9 ‐ ‐Chlorobenzene ‐ 2 1300 3 ‐Chlorobromomethane ‐‐ 630 3 ‐Chloroethane ‐‐ 23000 3 ‐Chloroform (Trichloromethane) ‐‐ 1.4 3 ‐Chloromethane (Methyl Chloride) ‐‐ 460 3 ‐cis‐1,2‐Dichloroethene ‐ 4.9 84 ‐ ‐cis‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Cymene (p‐Isopropyltoluene) ‐ ‐‐ ‐ ‐Dibromochloromethane ‐‐ 4.1 ‐ ‐Dibromomethane ‐‐ 99 3 ‐Dichlorodifluoromethane (CFC‐12) ‐‐ 370 3 ‐Ethylbenzene ‐ 7.7 25 3 ‐Isopropylbenzene (Cumene) ‐‐ 9900 3 ‐m,p‐Xylenes ‐ 6 ‐ ‐ ‐Methyl Tert Butyl Ether (MTBE) ‐‐ 210 3 ‐Methylene chloride (Dichloromethane) ‐ 0.019 26 ‐ ‐Naphthalene ‐‐ 6.5 ‐ ‐n‐Butylbenzene ‐‐ 18000 ‐ ‐n‐Propylbenzene ‐‐ 24000 3 ‐o‐Xylene ‐ 6 2800 3 ‐Styrene ‐‐ 32000 ‐ ‐tert‐Butylbenzene ‐‐ 12000 ‐ ‐Tetrachloroethene ‐ 2.1 2.7 ‐ ‐Toluene ‐ 0.44 5300 ‐ ‐trans‐1,2‐Dichloroethene ‐ 0.17 600 ‐ ‐trans‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Trichloroethene (see Note 2) ‐ 27 6 3 2040 DGA‐015‐1 DGA‐015‐5 DGA‐015‐10 DGA‐016‐1 DGA‐016‐5 DGA‐016‐10 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 1 (ft) 5 (ft) 10 (ft) 1 (ft) 5 (ft) 10 (ft)
‐015 DGA‐016DGA
< 0.005 < 0.005 < 0.0049 < 0.0049 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 6 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
Trichlorofluoromethane (CFC‐11) ‐‐ 5400 ‐ ‐
Trifluorotrichloroethane (Freon 113) ‐ 6.4 28000 3 ‐Vinyl acetate ‐‐ 3800 3 ‐Vinyl chloride ‐ 13 0.15 ‐ 10 Notes:1. Detected results were screened against the following criteria. Exceedances are shaded gray and flagged in [ ]:
[A]: Result is greater than Groundwater Protection Level (GPL), (Haley & Aldrich 2014a, 2014b). [B]: Result is greater than Commercial/Industrial Department of Toxic Substances Control Screening Level, HHRA Note 3, June 2020 ‐ Revised May 2022. [C]: Result is greater than Total Threshold Limit Concentration (TTLC), CCR Title 22 Section 66261.24.

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

DGA‐015‐1 DGA‐015‐5 DGA‐015‐10 DGA‐016‐1 DGA‐016‐5 DGA‐016‐10 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 1 (ft) 5 (ft) 10 (ft) 1 (ft) 5 (ft) 10 (ft)
‐015 DGA‐016DGA
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.0099 < 0.01 < 0.0098 < 0.0098 < 0.0099 < 0.01
< 0.00099 < 0.001 < 0.00098 < 0.00098 < 0.00099 < 0.001 HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 7 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
1,1,1,2‐Tetrachloroethane ‐‐ 8.8 3 ‐
1,1,1‐Trichloroethane ‐ 1.7 7200 ‐ ‐1,1,2,2‐Tetrachloroethane ‐‐ 2.7 ‐ ‐1,1,2‐Trichloroethane ‐ 0.04 5 3 ‐1,1‐Dichloroethane ‐ 0.56 16 ‐ ‐1,1‐Dichloroethene ‐ 0.071 350 ‐ ‐1,1‐Dichloropropene ‐ ‐‐ ‐ ‐1,2,3‐Trichlorobenzene ‐‐ 300 ‐ ‐1,2,3‐Trichloropropane ‐‐ 0.021 ‐ ‐1,2,4‐Trichlorobenzene ‐ 0.818 35 ‐ ‐1,2,4‐Trimethylbenzene ‐‐ 1800 3 ‐1,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐ 0.057 ‐ 10 1,2‐Dibromoethane (Ethylene Dibromide) ‐‐ 0.16 ‐ ‐
1,2‐Dichlorobenzene ‐ 28 9300 3 ‐1,2‐Dichloroethane ‐ 0.0028 2 3 ‐1,2‐Dichloropropane ‐‐ 11 3 ‐1,3,5‐Trimethylbenzene ‐‐ 1500 3 ‐1,3‐Dichlorobenzene ‐ ‐‐ ‐ ‐1,3‐Dichloropropane ‐‐ 2200 ‐ ‐1,4‐Dichlorobenzene ‐ 0.23 11 3 ‐2,2‐Dichloropropane ‐ ‐‐ ‐ ‐2‐Butanone (Methyl Ethyl Ketone) ‐‐ 190000 3 ‐2‐Chlorotoluene ‐‐ 2500 ‐ ‐2‐Hexanone (Methyl Butyl Ketone) ‐‐ 1300 3 ‐2‐Phenylbutane (sec‐Butylbenzene) ‐‐ 12000 ‐ ‐4‐Chlorotoluene ‐‐ 2300 ‐ ‐4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐‐ 140000 3 ‐Acetone ‐‐ 1100000 3 ‐Benzene ‐ 0.019 1.4 ‐ ‐Bromobenzene ‐‐ 1800 3 ‐Bromodichloromethane ‐‐ 1.3 ‐ ‐ Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐017‐1 DGA‐017‐5 DGA‐017‐10 DGA‐019‐1 DGA‐019‐6.5 DGA‐019‐10 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 1 (ft) 5 (ft) 10 (ft) 1 (ft) 6.5 (ft) 10 (ft)
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 F1 < 0.002
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.005 < 0.005 < 0.0049 < 0.0049 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02

0.022 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
DGA‐017 DGA‐019
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 8 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
Bromoform ‐‐ 86 ‐ ‐
Bromomethane (Methyl Bromide) ‐‐ 30 3 ‐Carbon disulfide ‐‐ 3500 3 ‐Carbon tetrachloride ‐‐ 2.9 ‐ ‐Chlorobenzene ‐ 2 1300 3 ‐Chlorobromomethane ‐‐ 630 3 ‐Chloroethane ‐‐ 23000 3 ‐Chloroform (Trichloromethane) ‐‐ 1.4 3 ‐Chloromethane (Methyl Chloride) ‐‐ 460 3 ‐cis‐1,2‐Dichloroethene ‐ 4.9 84 ‐ ‐cis‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Cymene (p‐Isopropyltoluene) ‐ ‐‐ ‐ ‐Dibromochloromethane ‐‐ 4.1 ‐ ‐Dibromomethane ‐‐ 99 3 ‐Dichlorodifluoromethane (CFC‐12) ‐‐ 370 3 ‐Ethylbenzene ‐ 7.7 25 3 ‐Isopropylbenzene (Cumene) ‐‐ 9900 3 ‐m,p‐Xylenes ‐ 6 ‐ ‐ ‐Methyl Tert Butyl Ether (MTBE) ‐‐ 210 3 ‐Methylene chloride (Dichloromethane) ‐ 0.019 26 ‐ ‐Naphthalene ‐‐ 6.5 ‐ ‐n‐Butylbenzene ‐‐ 18000 ‐ ‐n‐Propylbenzene ‐‐ 24000 3 ‐o‐Xylene ‐ 6 2800 3 ‐Styrene ‐‐ 32000 ‐ ‐tert‐Butylbenzene ‐‐ 12000 ‐ ‐Tetrachloroethene ‐ 2.1 2.7 ‐ ‐Toluene ‐ 0.44 5300 ‐ ‐trans‐1,2‐Dichloroethene ‐ 0.17 600 ‐ ‐trans‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Trichloroethene (see Note 2) ‐ 27 6 3 2040 DGA‐017‐1 DGA‐017‐5 DGA‐017‐10 DGA‐019‐1 DGA‐019‐6.5 DGA‐019‐10 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 1 (ft) 5 (ft) 10 (ft) 1 (ft) 6.5 (ft) 10 (ft)
DGA‐017 DGA‐019
< 0.005 < 0.005 < 0.0049 < 0.0049 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 F1 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01
< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 F1 < 0.002
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 F1 < 0.001 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001 < 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1B
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 9 of 9 ends

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

DGA‐017‐1 DGA‐017‐5 DGA‐017‐10 DGA‐019‐1 DGA‐019‐6.5 DGA‐019‐10 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 03/09/2022 1 (ft) 5 (ft) 10 (ft) 1 (ft) 6.5 (ft) 10 (ft)
DGA‐017 DGA‐019
< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01
< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01
< 0.01 < 0.0099 < 0.0098 < 0.0098 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00098 < 0.00098 < 0.001 < 0.001
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1b.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 9 ends

Location
Sample Name DGA‐003‐1 DGA‐003‐5 DGA‐003‐10 DGA‐004‐1 DGA‐004‐5 DGA‐004‐10 Sample Date 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 Sample Depth (bgs) 1 (ft) 5 (ft) 10 (ft) 1 (ft) 5 (ft) 10 (ft) Volatile Organic Compounds (mg/kg)
1,1,1,2‐Tetrachloroethane ‐‐ 8.8 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 1,1,1‐Trichloroethane ‐ 1.7 7200 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,1,2,2‐Tetrachloroethane ‐‐ 2.7 ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 1,1,2‐Trichloroethane ‐ 0.04 5 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 1,1‐Dichloroethane ‐ 0.56 16 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,1‐Dichloroethene ‐ 0.071 350 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,1‐Dichloropropene ‐ ‐‐ ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 1,2,3‐Trichlorobenzene ‐‐ 300 ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.0021,2,3‐Trichloropropane ‐‐ 0.021 ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.0021,2,4‐Trichlorobenzene ‐ 0.818 35 ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.0021,2,4‐Trimethylbenzene ‐‐ 1800 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.0021,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐ 0.057 ‐ 10 < 0.0099 < 0.01 < 0.0097 < 0.0099 < 0.0098 < 0.01 1,2‐Dibromoethane (Ethylene Dibromide) ‐‐ 0.16 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,2‐Dichlorobenzene ‐ 28 9300 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,2‐Dichloroethane ‐ 0.0028 2 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,2‐Dichloropropane ‐‐ 11 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,3,5‐Trimethylbenzene ‐‐ 1500 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 1,3‐Dichlorobenzene ‐ ‐‐ ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 1,3‐Dichloropropane ‐‐ 2200 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0011,4‐Dichlorobenzene ‐ 0.23 11 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0012,2‐Dichloropropane ‐ ‐‐ ‐ ‐ < 0.0049 < 0.005 < 0.0049 < 0.0049 < 0.0049 < 0.005 2‐Butanone (Methyl Ethyl Ketone) ‐‐ 190000 3 ‐ < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 < 0.02 2‐Chlorotoluene ‐‐ 2500 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 2‐Hexanone (Methyl Butyl Ketone) ‐‐ 1300 3 ‐ < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 < 0.02 2‐Phenylbutane (sec‐Butylbenzene) ‐‐ 12000 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 4‐Chlorotoluene ‐‐ 2300 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.0014‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐‐ 140000 3 ‐ < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 < 0.02 Acetone ‐‐ 1100000 3 ‐ < 0.02 0.021 < 0.019 0.044 F1 0.054 < 0.02 Benzene ‐ 0.019 1.4 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Bromobenzene ‐‐ 1800 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001Bromodichloromethane ‐‐ 1.3 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
‐003 DGA‐004DGA
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 9 ends

Location
Sample Name DGA‐003‐1 DGA‐003‐5 DGA‐003‐10 DGA‐004‐1 DGA‐004‐5 DGA‐004‐10 Sample Date 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 Sample Depth (bgs) 1 (ft) 5 (ft) 10 (ft) 1 (ft) 5 (ft) 10 (ft) Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
‐003 DGA‐004DGA
Bromoform ‐‐ 86 ‐ ‐ < 0.0049 < 0.005 < 0.0049 < 0.0049 < 0.0049 < 0.005 Bromomethane (Methyl Bromide) ‐‐ 30 3 ‐ < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 < 0.02 Carbon disulfide ‐‐ 3500 3 ‐ < 0.0099 < 0.01 < 0.0097 < 0.0099 < 0.0098 < 0.01 Carbon tetrachloride ‐‐ 2.9 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Chlorobenzene ‐ 2 1300 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001Chlorobromomethane ‐‐ 630 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 Chloroethane ‐‐ 23000 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002Chloroform (Trichloromethane) ‐‐ 1.4 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Chloromethane (Methyl Chloride) ‐‐ 460 3 ‐ < 0.02 < 0.02 < 0.019 < 0.02 < 0.02 < 0.02 cis‐1,2‐Dichloroethene ‐ 4.9 84 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 0.027 < 0.001 cis‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Cymene (p‐Isopropyltoluene) ‐ ‐‐ ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001Dibromochloromethane ‐‐ 4.1 ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 Dibromomethane ‐‐ 99 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Dichlorodifluoromethane (CFC‐12) ‐‐ 370 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 Ethylbenzene ‐ 7.7 25 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Isopropylbenzene (Cumene) ‐‐ 9900 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001m,p‐Xylenes ‐ 6 ‐ ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 Methyl Tert Butyl Ether (MTBE) ‐‐ 210 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002Methylene chloride (Dichloromethane) ‐ 0.019 26 ‐ ‐ < 0.0099 < 0.01 < 0.0097 < 0.0099 < 0.0098 < 0.01 Naphthalene ‐‐ 6.5 ‐ ‐ < 0.0099 < 0.01 < 0.0097 < 0.0099 < 0.0098 < 0.01n‐Butylbenzene ‐‐ 18000 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 n‐Propylbenzene ‐‐ 24000 3 ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 o‐Xylene ‐ 6 2800 3 ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001 Styrene ‐‐ 32000 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001tert‐Butylbenzene ‐‐ 12000 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001Tetrachloroethene ‐ 2.1 2.7 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001Toluene ‐ 0.44 5300 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001trans‐1,2‐Dichloroethene ‐ 0.17 600 ‐ ‐ < 0.00099 < 0.001 < 0.00097 < 0.00099 < 0.00098 < 0.001trans‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐ < 0.002 < 0.002 < 0.0019 < 0.002 < 0.002 < 0.002 Trichloroethene (see Note 2) ‐ 27 6 3 2040 < 0.002 < 0.002 < 0.0019 < 0.002 0.0029 < 0.002 HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 3 of 9 ends

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 4 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
1,1,1,2‐Tetrachloroethane ‐‐ 8.8 3 ‐
1,1,1‐Trichloroethane ‐ 1.7 7200 ‐ ‐1,1,2,2‐Tetrachloroethane ‐‐ 2.7 ‐ ‐1,1,2‐Trichloroethane ‐ 0.04 5 3 ‐1,1‐Dichloroethane ‐ 0.56 16 ‐ ‐1,1‐Dichloroethene ‐ 0.071 350 ‐ ‐1,1‐Dichloropropene ‐ ‐‐ ‐ ‐1,2,3‐Trichlorobenzene ‐‐ 300 ‐ ‐1,2,3‐Trichloropropane ‐‐ 0.021 ‐ ‐1,2,4‐Trichlorobenzene ‐ 0.818 35 ‐ ‐1,2,4‐Trimethylbenzene ‐‐ 1800 3 ‐1,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐ 0.057 ‐ 10 1,2‐Dibromoethane (Ethylene Dibromide) ‐‐ 0.16 ‐ ‐
1,2‐Dichlorobenzene ‐ 28 9300 3 ‐1,2‐Dichloroethane ‐ 0.0028 2 3 ‐1,2‐Dichloropropane ‐‐ 11 3 ‐1,3,5‐Trimethylbenzene ‐‐ 1500 3 ‐1,3‐Dichlorobenzene ‐ ‐‐ ‐ ‐1,3‐Dichloropropane ‐‐ 2200 ‐ ‐1,4‐Dichlorobenzene ‐ 0.23 11 3 ‐2,2‐Dichloropropane ‐ ‐‐ ‐ ‐2‐Butanone (Methyl Ethyl Ketone) ‐‐ 190000 3 ‐2‐Chlorotoluene ‐‐ 2500 ‐ ‐2‐Hexanone (Methyl Butyl Ketone) ‐‐ 1300 3 ‐2‐Phenylbutane (sec‐Butylbenzene) ‐‐ 12000 ‐ ‐4‐Chlorotoluene ‐‐ 2300 ‐ ‐4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐‐ 140000 3 ‐Acetone ‐‐ 1100000 3 ‐Benzene ‐ 0.019 1.4 ‐ ‐Bromobenzene ‐‐ 1800 3 ‐Bromodichloromethane ‐‐ 1.3 ‐ ‐ Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐007‐1 DGA‐007‐5 DGA‐007‐9.5 DGA‐008‐1 DGA‐008‐5 DGA‐008‐9.5 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 5 (ft) 9.5 (ft)
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001 < 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.02 < 0.02 < 0.02 < 0.02 0.024 0.02
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
DGA‐007 DGA‐008
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 5 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
Bromoform ‐‐ 86 ‐ ‐
Bromomethane (Methyl Bromide) ‐‐ 30 3 ‐Carbon disulfide ‐‐ 3500 3 ‐Carbon tetrachloride ‐‐ 2.9 ‐ ‐Chlorobenzene ‐ 2 1300 3 ‐Chlorobromomethane ‐‐ 630 3 ‐Chloroethane ‐‐ 23000 3 ‐Chloroform (Trichloromethane) ‐‐ 1.4 3 ‐Chloromethane (Methyl Chloride) ‐‐ 460 3 ‐cis‐1,2‐Dichloroethene ‐ 4.9 84 ‐ ‐cis‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Cymene (p‐Isopropyltoluene) ‐ ‐‐ ‐ ‐Dibromochloromethane ‐‐ 4.1 ‐ ‐Dibromomethane ‐‐ 99 3 ‐Dichlorodifluoromethane (CFC‐12) ‐‐ 370 3 ‐Ethylbenzene ‐ 7.7 25 3 ‐Isopropylbenzene (Cumene) ‐‐ 9900 3 ‐m,p‐Xylenes ‐ 6 ‐ ‐ ‐Methyl Tert Butyl Ether (MTBE) ‐‐ 210 3 ‐Methylene chloride (Dichloromethane) ‐ 0.019 26 ‐ ‐Naphthalene ‐‐ 6.5 ‐ ‐n‐Butylbenzene ‐‐ 18000 ‐ ‐n‐Propylbenzene ‐‐ 24000 3 ‐o‐Xylene ‐ 6 2800 3 ‐Styrene ‐‐ 32000 ‐ ‐tert‐Butylbenzene ‐‐ 12000 ‐ ‐Tetrachloroethene ‐ 2.1 2.7 ‐ ‐Toluene ‐ 0.44 5300 ‐ ‐trans‐1,2‐Dichloroethene ‐ 0.17 600 ‐ ‐trans‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Trichloroethene (see Note 2) ‐ 27 6 3 2040 DGA‐007‐1 DGA‐007‐5 DGA‐007‐9.5 DGA‐008‐1 DGA‐008‐5 DGA‐008‐9.5 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 5 (ft) 9.5 (ft)
DGA‐007 DGA‐008
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 0.0032 < 0.002
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 6 of 9 ends

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

DGA‐007‐1 DGA‐007‐5 DGA‐007‐9.5 DGA‐008‐1 DGA‐008‐5 DGA‐008‐9.5 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 5 (ft) 9.5 (ft)
DGA‐007 DGA‐008
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.01 < 0.0099 < 0.0099 < 0.0099 < 0.01 < 0.01
< 0.001 < 0.00099 < 0.00099 < 0.00099 < 0.001 < 0.001
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 7 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
1,1,1,2‐Tetrachloroethane ‐‐ 8.8 3 ‐
1,1,1‐Trichloroethane ‐ 1.7 7200 ‐ ‐1,1,2,2‐Tetrachloroethane ‐‐ 2.7 ‐ ‐1,1,2‐Trichloroethane ‐ 0.04 5 3 ‐1,1‐Dichloroethane ‐ 0.56 16 ‐ ‐1,1‐Dichloroethene ‐ 0.071 350 ‐ ‐1,1‐Dichloropropene ‐ ‐‐ ‐ ‐1,2,3‐Trichlorobenzene ‐‐ 300 ‐ ‐1,2,3‐Trichloropropane ‐‐ 0.021 ‐ ‐1,2,4‐Trichlorobenzene ‐ 0.818 35 ‐ ‐1,2,4‐Trimethylbenzene ‐‐ 1800 3 ‐1,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐ 0.057 ‐ 10 1,2‐Dibromoethane (Ethylene Dibromide) ‐‐ 0.16 ‐ ‐
1,2‐Dichlorobenzene ‐ 28 9300 3 ‐1,2‐Dichloroethane ‐ 0.0028 2 3 ‐1,2‐Dichloropropane ‐‐ 11 3 ‐1,3,5‐Trimethylbenzene ‐‐ 1500 3 ‐1,3‐Dichlorobenzene ‐ ‐‐ ‐ ‐1,3‐Dichloropropane ‐‐ 2200 ‐ ‐1,4‐Dichlorobenzene ‐ 0.23 11 3 ‐2,2‐Dichloropropane ‐ ‐‐ ‐ ‐2‐Butanone (Methyl Ethyl Ketone) ‐‐ 190000 3 ‐2‐Chlorotoluene ‐‐ 2500 ‐ ‐2‐Hexanone (Methyl Butyl Ketone) ‐‐ 1300 3 ‐2‐Phenylbutane (sec‐Butylbenzene) ‐‐ 12000 ‐ ‐4‐Chlorotoluene ‐‐ 2300 ‐ ‐4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐‐ 140000 3 ‐Acetone ‐‐ 1100000 3 ‐Benzene ‐ 0.019 1.4 ‐ ‐Bromobenzene ‐‐ 1800 3 ‐Bromodichloromethane ‐‐ 1.3 ‐ ‐ Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
DGA‐009‐1 DGA‐009‐5 DGA‐009‐10 DGA‐011‐3.5 DGA‐011‐5 DGA‐011‐10 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 1 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 10 (ft)
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.005 < 0.0049 < 0.005 < 0.005 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02< 0.02 0.042 < 0.02 < 0.02 < 0.02 < 0.02 < 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
‐009 DGA‐011DGA
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 8 of 9 ends

Location
Sample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (mg/kg)
Background 1 GPL
Commercial/
Industrial
DTSC SL2
TTLC
Bromoform ‐‐ 86 ‐ ‐
Bromomethane (Methyl Bromide) ‐‐ 30 3 ‐Carbon disulfide ‐‐ 3500 3 ‐Carbon tetrachloride ‐‐ 2.9 ‐ ‐Chlorobenzene ‐ 2 1300 3 ‐Chlorobromomethane ‐‐ 630 3 ‐Chloroethane ‐‐ 23000 3 ‐Chloroform (Trichloromethane) ‐‐ 1.4 3 ‐Chloromethane (Methyl Chloride) ‐‐ 460 3 ‐cis‐1,2‐Dichloroethene ‐ 4.9 84 ‐ ‐cis‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Cymene (p‐Isopropyltoluene) ‐ ‐‐ ‐ ‐Dibromochloromethane ‐‐ 4.1 ‐ ‐Dibromomethane ‐‐ 99 3 ‐Dichlorodifluoromethane (CFC‐12) ‐‐ 370 3 ‐Ethylbenzene ‐ 7.7 25 3 ‐Isopropylbenzene (Cumene) ‐‐ 9900 3 ‐m,p‐Xylenes ‐ 6 ‐ ‐ ‐Methyl Tert Butyl Ether (MTBE) ‐‐ 210 3 ‐Methylene chloride (Dichloromethane) ‐ 0.019 26 ‐ ‐Naphthalene ‐‐ 6.5 ‐ ‐n‐Butylbenzene ‐‐ 18000 ‐ ‐n‐Propylbenzene ‐‐ 24000 3 ‐o‐Xylene ‐ 6 2800 3 ‐Styrene ‐‐ 32000 ‐ ‐tert‐Butylbenzene ‐‐ 12000 ‐ ‐Tetrachloroethene ‐ 2.1 2.7 ‐ ‐Toluene ‐ 0.44 5300 ‐ ‐trans‐1,2‐Dichloroethene ‐ 0.17 600 ‐ ‐trans‐1,3‐Dichloropropene ‐ ‐‐ ‐ ‐Trichloroethene (see Note 2) ‐ 27 6 3 2040 DGA‐009‐1 DGA‐009‐5 DGA‐009‐10 DGA‐011‐3.5 DGA‐011‐5 DGA‐011‐10 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 1 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 10 (ft)
‐009 DGA‐011DGA
< 0.005 < 0.0049 < 0.005 < 0.005 < 0.005 < 0.005
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099 < 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.02 < 0.02 < 0.02 < 0.02 < 0.02 < 0.02
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099
< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 1C
SOIL ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 9 of 9 ends

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit.

F1 = MS and/or MSD recovery exceeds control limits.

Goal (HBRG) of 1.5 mg/kg (Haley & Aldrich, 2021b). Results shown in this table do not exceed the HBRG for TCE.

DGA‐009‐1 DGA‐009‐5 DGA‐009‐10 DGA‐011‐3.5 DGA‐011‐5 DGA‐011‐10 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 03/08/2022 1 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 10 (ft)
‐009 DGA‐011DGA
< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099
< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099
< 0.01 < 0.0098 < 0.01 < 0.0099 < 0.01 < 0.0099
< 0.001 < 0.00098 < 0.001 < 0.00099 < 0.001 < 0.00099
HALEY & ALDRICH, INC.
2022_06_HAI‐Tbl 1c.xlsx JUNE 2022
TABLE 2A
SOIL GAS ANALYTICAL RESULTS ‐ BUILDING 29 NORTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 1 ends

Previous Boring
Location PW‐07
Sample Date 7/31/2020 03/08/2022
Sample Type N N N N N N
Sample Depth (bgs) 4 (ft) 1 (ft) 5 (ft) 10 (ft) 2 (ft) 5 (ft) Sample Name PW07‐SV‐4 DGA‐021‐1‐SG DGA‐021‐5‐SG DGA‐021‐10‐SG DGA‐022‐2‐SG DGA‐022‐5‐SG Volatile Organic Compounds (µg/m3)
Bromodichloromethane 70 11 < 16 < 100 < 100 < 100 < 100 < 100 Chloroform (Trichloromethane) 80 18 160 < 20 < 20 73 190 93 cis‐1,2‐Dichloroethene 100 < 16 < 100 < 100 < 100 < 100 < 100 Tetrachloroethene 370 67 330 560 370 770 98 34
Trichloroethene 350 100 7600 770 600 5000 860 440
Notes:

1. Results in bold are detected.

2. Results are shown in micrograms per cubic meter (µg/m3)

3. <: Result is not detected above the indicated reporting limit.

4. Detected results were screened agaist Health‐Based
Remediation Goals. Results detected above the Health‐
Based Remediation Goals are shaded in gray.

5. ESL = 2019 San Francisco Bay Regional Water Quality Control Board Vapor Environmental Screening Levels Step Out Borings
HBRG
Vapor ESL:

Commercial/
Industrial
Cancer Risk
‐021 DGA‐022DGA
03/10/2022 03/10/2022
HALEY & ALDRICH, INC.
2022‐06‐Tbl 2a‐2c.xlsx JUNE 2022
TABLE 2B
SOIL GAS ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 2 ends

Previous Boring
Location PW‐12
Sample Date 7/30/2020 03/08/2022
Sample Type N N N N N N N N
Sample Depth (bgs) 3 (ft) 1 (ft) 5 (ft) 10 (ft) 2.5 (ft) 5 (ft) 2 (ft) 5 (ft) Sample Name PW12‐SV‐3 DGA‐013‐1‐SG DGA‐013‐5‐SG DGA‐013‐10‐SG DGA‐014‐2.5‐SG DGA‐014‐5‐SG DGA‐015‐2‐SG DGA‐015‐5‐SG Volatile Organic Compounds (µg/m3)
Bromodichloromethane 70 11 17 < 100 < 100 < 100 < 100 < 100 < 100 < 100 Chloroform (Trichloromethane) 80 18 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 cis‐1,2‐Dichloroethene 100 < 2 < 100 < 100 < 100 < 100 < 100 < 100 < 100 Tetrachloroethene 370 67 1500 180 < 20 130 260 90 < 20 < 20 Trichloroethene 350 100 35 54 < 20 81 < 20 < 20 < 20 < 20 Notes:

1. Results in bold are detected.

2. Results are shown in micrograms per cubic meter (µg/m3)

3. <: Result is not detected above the indicated reporting limit.

4. Detected results were screened agaist Health‐Based
Remediation Goals. Results detected above the Health‐
Based Remediation Goals are shaded in gray.

5. ESL = 2019 San Francisco Bay Regional Water Quality
Control Board Vapor Environmental Screening Levels
HBRG
Vapor ESL:

Commercial/
Industrial Cancer
Risk
DGA‐013 DGA‐014
Step Out Borings
DGA‐015
03/09/2022 03/09/2022 03/09/2022
HALEY & ALDRICH, INC.
2022‐06‐Tbl 2a‐2c.xlsx JUNE 2022
TABLE 2B
SOIL GAS ANALYTICAL RESULTS ‐ BUILDING 29 CENTRAL
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 2 ends

Location
Sample Date
Sample Type
Sample Depth (bgs)
Sample Name
Volatile Organic Compounds (µg/m3)
Bromodichloromethane 70 11Chloroform (Trichloromethane) 80 18 cis‐1,2‐Dichloroethene 100
Tetrachloroethene 370 67Trichloroethene 350 100Notes:

1. Results in bold are detected.

2. Results are shown in micrograms per cubic meter (µg/m3)

3. <: Result is not detected above the indicated reporting limit.

4. Detected results were screened agaist Health‐Based
Remediation Goals. Results detected above the Health‐
Based Remediation Goals are shaded in gray.

5. ESL = 2019 San Francisco Bay Regional Water Quality
Control Board Vapor Environmental Screening Levels
HBRG
Vapor ESL:

Commercial/
Industrial Cancer
Risk
PW‐09 B29‐V09
7/30/2020 5/22/2018

N N N N N FD N FD N N N

4.5 (ft) 1 (ft) 2 (ft) 5 (ft) 10 (ft) 2 (ft) 5 (ft)
PW09‐SV‐4.5 B29‐V09‐1' DGA‐016‐2‐SG DGA‐016‐5‐SG DGA‐017‐1‐SG DGA‐017‐1‐SG REP DGA‐017‐5‐SG DGA‐017‐5‐SG REP DGA‐017‐10‐SG DGA‐019‐2‐SG DGA‐019‐5‐SG 140 < 68 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 410 170 61 < 20 140 120 57 68 41 30 23
< 80 < 40 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 80 < 34 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20
14000 11000 4900 250 2700 2700 840 890 1400 2600 550
1 (ft) 5 (ft)
Previous Borings Stepout Borings
‐016 DGA‐017 DGA‐019DGA
03/10/2022 03/08/2022 03/10/2022
HALEY & ALDRICH, INC.
2022‐06‐Tbl 2a‐2c.xlsx JUNE 2022
TABLE 2C
SOIL GAS ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 2 ends

Location B29‐V16 B29‐V19
Sample Date 5/22/2018 5/22/2018
Sample Type N N FD N N FD N N N N N N N N
Sample Depth (bgs) 1 (ft) 1 (ft) 2 (ft) 2 (ft) 5 (ft) 2 (ft) 5 (ft) 2 (ft) 5 (ft) 1 (ft) 5 (ft) 10 (ft) Sample Name B29‐V16‐1'
B29‐V19‐1'
DGA‐009‐2‐SG
DGA‐009‐2‐SG
REP DGA‐009‐5‐SG DGA‐011‐2‐SG DGA‐011‐5‐SG DGA‐003‐2‐SG DGA‐003‐5‐SG DGA‐004‐1‐SG DGA‐004‐5‐SG DGA‐004‐10‐SG Volatile Organic Compounds (µg/m3)
Bromodichloromethane 70 11 < 68 < 2< 800 < 68 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 Chloroform (Trichloromethane) 80 18 < 25 26 < 800 < 25 < 20 < 20 < 20 < 20 < 20 < 20 < 20 80 < 20 < 20 cis‐1,2‐Dichloroethene 100 < 40 3.8 4300 1300 17000 14000 1400 < 100 180 < 100 < 100 5800 140000 15000 Tetrachloroethene 370 67 340 4.7 < 800 < 34 66 56 < 20 35 < 20 < 20 < 20 100 < 20 < 20 Trichloroethene 350 100 16000 91 64000 9800 2300 1900 150 860 160 260 33 18000 6600 3900 Notes:

1. Results in bold are detected.

2. Results are shown in micrograms per cubic meter (µg/m3)

3. <: Result is not detected above the indicated reporting limit.

4. Detected results were screened agaist Health‐Based
Remediation Goals. Results detected above the Health‐
Based Remediation Goals are shaded in gray.

5. ESL = 2019 San Francisco Bay Regional Water Quality
Control Board Vapor Environmental Screening Levels
03/09/2022 03/08/2022 03/08/202203/09/2022
HBRG
Previous Borings Step Out Borings
Vapor ESL:

Commercial/
Industrial Cancer
Risk
PW‐14
7/30/2020
4 (ft)
PW13‐SV‐4
‐009 DGA‐011 DGA‐003 DGA‐004DGA
HALEY & ALDRICH, INC.
2022‐06‐Tbl 2a‐2c.xlsx JUNE 2022
TABLE 2C
SOIL GAS ANALYTICAL RESULTS ‐ BUILDING 29 SOUTH
ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 2 ends

Location
Sample Date
Sample Type
Sample Depth (bgs)
Sample Name
Volatile Organic Compounds (µg/m3)
Bromodichloromethane 70 11
Chloroform (Trichloromethane) 80 18cis‐1,2‐Dichloroethene 100 Tetrachloroethene 370 67
Trichloroethene 350 100Notes:1. Results in bold are detected.

2. Results are shown in micrograms per cubic meter (µg/m3)

3. <: Result is not detected above the indicated reporting limit.

4. Detected results were screened agaist Health‐Based
Remediation Goals. Results detected above the Health‐
Based Remediation Goals are shaded in gray.

5. ESL = 2019 San Francisco Bay Regional Water Quality
Control Board Vapor Environmental Screening Levels
HBRG
Vapor ESL:

Commercial/
Industrial Cancer
Risk
Previous Boring
PW‐15
7/30/2020

N N NN N

4.5 (ft) 2 (ft) 5 (ft) 2 (ft) 5 (ft)
PW15‐SV‐4.5
DGA‐007‐2‐SG DGA‐007‐5‐SG DGA‐008‐2‐SG DGA‐008‐5‐SG
< 200 < 100 < 100 < 100 < 100
< 200 120 75 < 20 < 20
< 200 < 100 < 100 < 100 < 100
< 200 20 < 20 < 20 < 20
13000 5600 1500 1300 330
03/10/2022 03/08/2022
Step Out Borings
DGA‐007 DGA‐008
HALEY & ALDRICH, INC.
2022‐06‐Tbl 2a‐2c.xlsx JUNE 2022
TABLE 3
GROUNDWATER ANALYTICAL RESULTS ‐ VOLATILE ORGANIC COMPOUNDS ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 3 ends

Location DGA‐005 DGA‐012 DGA‐018 DGA‐020
Portion of Building 29 South Central Central North
Sample Name DGA‐005‐20‐GW DGA‐012‐20‐GW DGA‐018‐20‐GW DGA‐020‐20‐GW Sample Date 03/10/2022 03/09/2022 03/09/2022 03/09/2022 Sample Type NNNN
Sample Depth (bgs) 20 (ft) 20 (ft) 20 (ft) 20 (ft)
Volatile Organic Compounds (µg/L)
1,1,1,2‐Tetrachloroethane ‐ 17 < 2< 4< 2< 4
1,1,1‐Trichloroethane 200 6300 < 1< 2< 1< 2
1,1,2,2‐Tetrachloroethane 1 14 < 1< 2< 1< 2
1,1,2‐Trichloroethane 5 23 < 1< 2< 1< 2
1,1‐Dichloroethane 5 33 6.8 [A] < 2< 1< 2
1,1‐Dichloroethene 6 280 < 1< 2< 1< 2
1,1‐Dichloropropene ‐‐ < 1< 2< 1< 2
1,2,3‐Trichlorobenzene ‐‐ < 1< 2< 1< 2
1,2,3‐Trichloropropane 0.005 94 < 5< 10 < 5< 10
1,2,4‐Trichlorobenzene 5 150 < 1< 2< 1< 2
1,2,4‐Trimethylbenzene ‐‐ < 1< 2< 1< 2
1,2‐Dibromo‐3‐chloropropane (DBCP) 0.2 0.34 < 10 < 20 < 10 < 20 1,2‐Dibromoethane (Ethylene Dibromide) 0.05 0.76 < 1< 2< 1< 2 1,2‐Dichlorobenzene 600 11000 < 1< 2< 1< 2
1,2‐Dichloroethane 0.5 9.8 < 0.5 < 1< 0.5 < 1
1,2‐Dichloropropane 5 10 < 1< 2< 1< 2
1,3,5‐Trimethylbenzene ‐‐ < 1< 2< 1< 2
1,3‐Dichlorobenzene ‐‐ < 1< 2< 1< 2
1,3‐Dichloropropane ‐‐ < 1< 2< 1< 2
1,4‐Dichlorobenzene 5 11 < 1< 2< 1< 2
2,2‐Dichloropropane ‐‐ < 1< 2< 1< 2
2‐Butanone (Methyl Ethyl Ketone) ‐ 9500000 < 20 < 40 < 20 < 40 2‐Chlorotoluene ‐‐ < 1< 2< 1< 2
2‐Hexanone (Methyl Butyl Ketone) ‐‐ < 10 < 20 < 10 < 20 2‐Phenylbutane (sec‐Butylbenzene) ‐‐ < 1< 2< 1< 2
4‐Chlorotoluene ‐‐ < 1< 2< 1< 2
4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) ‐ 2300000 < 10 < 20 < 10 < 20 Acetone ‐ 97000000 24 < 40 < 20 < 40
Benzene 1 1.8 < 0.5 < 1< 0.5 < 1
Bromobenzene ‐‐ < 1< 2< 1< 2
ESL
Groundwater
Commercial/
Industrial
California MCL
HALEY & ALDRICH, INC.
2022_06_HAI_Tbl 3.xlsx JUNE 2022
TABLE 3
GROUNDWATER ANALYTICAL RESULTS ‐ VOLATILE ORGANIC COMPOUNDS ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 3 ends

Location DGA‐005 DGA‐012 DGA‐018 DGA‐020
Portion of Building 29 South Central Central North
Sample Name DGA‐005‐20‐GW DGA‐012‐20‐GW DGA‐018‐20‐GW DGA‐020‐20‐GW Sample Date 03/10/2022 03/09/2022 03/09/2022 03/09/2022 Sample Type NNNN
Sample Depth (bgs) 20 (ft) 20 (ft) 20 (ft) 20 (ft)
Volatile Organic Compounds (µg/L)
ESL
Groundwater
Commercial/
Industrial
California MCL
Bromodichloromethane ‐ 3.8 < 1< 2< 1< 2
Bromoform ‐ 510 < 5 *+ < 10 *+ < 5 *+ < 10 *+Bromomethane (Methyl Bromide) ‐ 73 < 25 < 50 < 25 < 50 Carbon disulfide ‐‐ < 10 < 20 < 10 < 20
Carbon tetrachloride 0.5 1.9 < 0.5 < 1< 0.5 < 1
Chlorobenzene 70 1700 < 1< 2< 1< 2
Chlorobromomethane ‐‐ < 2< 4< 2< 4
Chloroethane ‐ 97000 < 5< 10 < 5< 10
Chloroform (Trichloromethane) ‐ 3.6 < 1< 2< 1< 2
Chloromethane (Methyl Chloride) ‐ 1100 < 10 < 20 < 10 < 20 cis‐1,2‐Dichloroethene 6 210 38 [A] < 2< 1< 2
cis‐1,3‐Dichloropropene ‐‐ < 0.5 < 1< 0.5 < 1
Cymene (p‐Isopropyltoluene) ‐‐ < 1< 2< 1< 2
Dibromochloromethane ‐‐ < 2< 4< 2< 4
Dibromomethane ‐‐ < 1< 2< 1< 2
Dichlorodifluoromethane (CFC‐12) ‐‐ < 5 *+ < 10 *+ < 5 *+ < 10 *+ Ethylbenzene 300 15 < 1< 2< 1< 2
Isopropylbenzene (Cumene) ‐‐ < 1< 2< 1< 2
m,p‐Xylenes ‐‐ < 2< 4< 2< 4
Methyl Tert Butyl Ether (MTBE) 13 2000 < 1< 2< 1< 2
Methylene chloride (Dichloromethane) 5 94 < 10 < 20 < 10 < 20 Naphthalene ‐ 20 < 10 < 20 < 10 < 20
n‐Butylbenzene ‐‐ < 1< 2< 1< 2
n‐Propylbenzene ‐‐ < 1< 2< 1< 2
o‐Xylene ‐‐ < 1< 2< 1< 2
Styrene 100 36000 < 1< 2< 1< 2
tert‐Butylbenzene ‐‐ < 1< 2< 1< 2
Tetrachloroethene 5 2.8 < 1< 2< 1< 2
Toluene 150 4900 < 1< 2< 1< 2
trans‐1,2‐Dichloroethene 10 920 1.4 < 2< 1< 2
HALEY & ALDRICH, INC.
2022_06_HAI_Tbl 3.xlsx JUNE 2022
TABLE 3
GROUNDWATER ANALYTICAL RESULTS ‐ VOLATILE ORGANIC COMPOUNDS ROHR, INC. ‐ NORTH CAMPUS, PARCEL A

CHULA VISTA, CALIFORNIA

Page 3 of 3 ends

1. Detected results were screened against the following criteria. Exceedances are shaded gray and flagged in [ ]:
[A]: Result is greater than California MCL.
[B]: Result is greater than ESL Groundwater Vapor Intrusion for Commercial/Industrial, July 2019 (Rev. 2).

Abbreviations:

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit. *+ = LCS and/or LCSD is outside acceptance limits, high biased. ‐ = not analyzed or not applicable.
µg/L = micrograms per liter.
bgs = below ground surface.

HALEY & ALDRICH, INC.
2022_06_HAI_Tbl 3.xlsx JUNE 2022

FIGURES
117°6'0"W
32°39'0"N
32°37'30"N
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA

SITE LOCUS
APPROXIMATE SCALE: 1 IN = 2,000 FT
JUNE 2022 FIGURE 1
GIS FILE PATH: G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0001_SITE_LOCUS.mxd - USER: dfm - LAST SAVED: 5/3/2022 12:17:27 PM SITE
MAP SOURCE: ESRI
USGS QUAD: NATIONAL CITY, IMPERIAL BEACH
SITE COORDINATES: 32°38'03.8"N, 117°05'56.9"W

SAN DIEGO PUMPS
& COMPRESSOR
SUPPLY
368 BAY
FORMER SHALLOW SWALE (1948)
161 161
3-09596 3-09596
148 148147 147
146 146
145 145
161 161
301 301
300 300

JACKSON'S

IMPORT AUTO
350-360 BAY

SAN DIEGO PUMP
& COMPRESSOR SUPPLY
364-368 BAY

MAINTENANCE

DEPARTMENT
FORMER

FORMER TRUCK

ENGINE REPAIR
100
99 29

G STREET
INTERSTATE 5

BAY BOULEVARD
FORMER

LUMBER YARD
(1948)
FORMER

AGRICULTURE - CITRUS
(1948)
VAULT (4 FEET BGS)

WESTERN DRAINAGE SWALE

SAN DIEGO & ARIZONA EASTERN RAIL ROAD
304A
304C 304C
304B
304D
204 204
200 200
226 226
202 202 201 201
203 203
56702233
56701007
56702217
56702228
57133030
57133024
56702230
56702231
57133016
57133003
57133029
56702216
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA
FIGURE 2 SCALE: AS SHOWN
JUNE 2022
0 125 250

SCALE IN FEET
GIS FILE PATH: G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0002_HISTORICAL_ENV_SITE_FEATURES.mxd - USER: dfm - LAST SAVED: 5/12/2022 10:31:45 AM LEGEND

FORMER MILLS/LATHES

FORMER VESSELS AND VAULTS

UST (UNDERGROUND STORAGE TANK)

BASED ON DEH EVALUATION OF CCR
TITLE 23. CLOSED THROUGH REMOVAL OR
FILLING.

UV (UNDERGROUND VESSEL)

AST (ABOVEGROUND STORAGE TANK)

PAINT BOOTH

DEGREASER

STORM WATER CONVEYANCE SYSTEM
VAULT (4 FEET BGS, INSTALLED IN 2000)

ASSESSOR'S PARCEL BOUNDARY AND
NUMBER

FORMER EXCAVATION AREA
! ! ! ! ! !
! ! ! ! ! !
! ! ! ! ! !
SHALLOW SWALE (1948)

SUBJECT SITE
NOTES

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

2. SOURCES: ABC 1998, URS 2013, ROHR MILLS AND LATHES - EQUIPMENT MANUAL

3. THE LOCATIONS OF FORMER VESSELS AND VAULTS FROM ABC 1998 AND URS 2013.

SOME LOCATIONS HAVE BEEN ADJUSTED BASED ON SITE RECONNAISSANCE.

4. AERIAL IMAGERY SOURCE: NEARMAP, MARCH 2022

HISTORICAL ENVIRONMENTAL

SITE FEATURES

BUILDING NUMBER
56701029
29 A@DA@ A@DA@D
A@
AD
@DA@
A@D
A@D A@D
A@D
") ")
") ")
") ")
")
")
")
")
")
") ")
")
")
")
")
") ")
")
")
")
")
") ")
") ")
") ") ")
")
") ")
")
")
A@
A@
A@
A@
A@
A@
A@
?!
A@
A@DA@ A@DA@D
A@
AD
@DA@
?!A@
UT-24
DB-4
OW-4
OW-3
OW-1
OW-2
DB-5
DB-2
100
99 29
DGA-003
DGA-004
DGA-007
DGA-008
DGA-009
DGA-012 DGA-011
DGA-013
DGA-014 DGA-015
DGA-016
DGA-017
DGA-018
DGA-019
DGA-020 DGA-021
DGA-024 DGA-022
DGA-025
DGA-026
DGA-005
56702233
56701007
56702217
56702228
57133030
57133024
56702230
56702231
57133016
57133003
57133029
56702216
MW-A

MW-B MW-C
MW-D
DB-4
OW-4
OW-3
OW-1
DB-2
OW-2
NCW-021B NCW-021A
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA
FIGURE 3 SCALE: AS SHOWN
JUNE 2022
0 125 250

SCALE IN FEET
GIS FILE PATH: G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0003_SAMPLE_LOCATION_MAP.mxd - USER: dfm - LAST SAVED: 5/24/2022 4:03:26 PM LEGEND
A@ EXISTING MONITORING WELL
A@D DESTROYED MONITORING

WELL/TRANSDUCER
2022 SAMPLE LOCATIONS
SOIL

SOIL GAS
") GROUNDWATER

HISTORICAL SAMPLE LOCATIONS
SOIL

SOIL GAS
") GROUNDWATER
VAULT (4 FEET BGS, INSTALLED IN 2000)
TO BE RAZED AND EXCAVATED 5 FEET

BELOW GROUND SURFACE TO

CONSTRUCT LOADING DOCK

ASSESSOR'S PARCEL BOUNDARY AND
NUMBER

SUBJECT SITE
NOTES

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

2. AERIAL IMAGERY SOURCE: NEARMAP, MARCH 2022

SAMPLE LOCATION MAP

BUILDING NUMBER
56701029
29 ¨¦§5
B11

2.5' : < 0.005

16.0' : < 0.005
B15

5.0' : < 0.005

10.0' : < 0.005

15.0' : < 0.005
B29-01

0.5' : < 0.0051

1.5' : < 0.005
B29-02

0.5' : < 0.005

1.5' : < 0.0052
B29-03

0.5' : < 0.0052

2.5' : 0.00064 J
B29-04

0.5' : < 0.005

4.5' : < 0.005
B29-05

1.5' : 0.015

4.5' : 0.014
B29-06

0.5' : < 0.0051

4.5' : < 0.0049
B29-07

0.5' : < 0.0051

2.5' : < 0.0052
B29-08

0.5' : < 0.0051

4.5' : < 0.0052
B29-09

0.5' : < 0.005

4.5' : < 0.005
B29-22

0.5' : 1.33

4.5' : 0.0474
B29-23

0.5' : 37.8

4.5' : 0.0502
B29-24

0.5' : 7.83

4.5' : 0.0925
B29-25

0.5' : < 0.001

4.5' : < 0.001
B29-26

0.5' : 0.737

4.5' : 0.0186
B29-27

0.5' : 0.275

4.5' : 0.00273
B29-28

0.5' : 1.43

4.5' : 0.00228
B29-29

0.5' : 0.0779

4.5' : 0.00313
B29-30

0.5' : 0.0229

4.5' : < 0.001
B29-31

0.5' : 0.0011

4.5' : < 0.001
B29-32A

0.5' : < 0.001

4.5' : < 0.001
B29-32B

0.5' : < 0.001

4.5' : < 0.001
B29-32C

0.5' : < 0.001

4.5' : < 0.001
PW-02

6.5' : 0.14
PW-03

10.0' : 0.011
PW-06

3.0' : 0.02
PW-07

1.5' : 0.023
UT-19

1.00 : < 0.005

5.00 : < 0.005
UT-23

1.00 : < 0.005

5.00 : 0.059
UT-24

1.00 : < 0.005

5.00 : < 0.005
UT-66

1.00 : < 0.005

5.00 : < 0.005
DGA-016

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-017

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-019

1.0' : < 0.002

6.5' : < 0.002

10.0' : < 0.002
DGA-021

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-022

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-024

1.0' : 0.43

3.0' : 0.16

4.5' : 0.041
DGA-025

1.5' : 0.58

3.0' : 0.051

5.0' : 0.033
DGA-026

3.0' : 0.0042

4.5' : 0.0042

6.0' : 0.0034
FORMER

MAINTENANCE

DEPARTMENT
G
S
T
REET

WESTERN DRAINAGE SWALE

SAN DIEGO & ARIZONA EASTERN RAIL ROAD
202
201
203
300
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA
FIGURE 4A SCALE: AS SHOWN
JUNE 2022
0 40 80

SCALE IN FEET
GIS FILE PATH: G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0004A_TCE_IN_SOIL_B29_NORTH.mxd - USER: dfm - LAST SAVED: 6/10/2022 11:53:17 AM LEGEND

TCE CONCETRATIONS IN VADOSE ZONE SOIL
(mg/kg)
ND
ND - 0.1

0.1 - 1.5 (HBRG)

1.5 - 27 (GPL)
> 27 (GPL)

FORMER MILLS/LATHES

FORMER VESSELS AND VAULTS

UST (UNDERGROUND STORAGE TANK) BASED ON
DEH EVALUATION OF CCR TITLE 23. CLOSED
THROUGH REMOVAL OR FILLING.

UV (UNDERGROUND VESSEL)

AST (ABOVEGROUND STORAGE TANK)

PAINT BOOTH

DEGREASER
TO BE RAZED AND EXCAVATED 5 FEET BELOW

GROUND SURFACE TO CONSTRUCT LOADING
DOCK
VAULT (4.5 FEET BGS, INSTALLED IN 2000)

TCE IN VADOSE ZONE SOIL
BUILDING 29 NORTH
BAY BLVD.

H ST.

G ST.

NOTES

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

2. ALL CONCENTRATIONS ARE IN MILLIGRAMS PER KILOGRAM (mg/kg)

3. < = LESS THAN LABORATORY DETECTION LIMITS ARE SHOWN

4. TCE = TRICHLOROETHENE

5. HIGHEST DETECTED TCE CONCENTRATION USED FOR COLOR
GRADING.

6. AERIAL IMAGERY SOURCE: NEARMAP, MARCH 2022

DETAIL AREA
29 100
99 ¨¦§5
B29-08

0.5' : < 0.0051

4.5' : < 0.0052
B29-09

0.5' : < 0.005

4.5' : < 0.005
B29-10

0.5' : < 0.0052

4.5' : < 0.005
B29-11

0.5' : < 0.0049

4.5' : < 0.0052
B29-12

0.5' : < 0.0052

4.5' : < 0.005
B29-13

3.5' : < 0.0051

4.5' : < 0.0052
B29-15

0.5' : < 0.0049

2.5' : 0.0018 J
B29-16

0.5' : < 0.0052

2.5' : < 0.0049
B29-21

0.5' : 0.00079 J
B29-31

0.5' : 0.0011

4.5' : < 0.001
B29-33A

0.5' : < 0.001

4.5' : 0.00725
B29-34A

0.5' : < 0.00100

4.5' : < 0.00100
PW-11

1.5' : < 0.0071
PW-12

1.5' : < 0.0042
UT-19

1.00 : < 0.005

5.00 : < 0.005
UT-20

1.00 : < 0.005

5.00 : < 0.005
UT-25

1.00 : < 0.005/ < 0.005

5.00 : < 0.005
DGA-009

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-011

3.5' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-013

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-014

3.5' : < 0.019

5.0' : < 0.002

10.0' : < 0.002
DGA-015

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-016

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-017

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-019

1.0' : < 0.002

6.5' : < 0.002

10.0' : < 0.002

DRAINAGE DITCH

BAY BOULEVARD
29 29

WESTERN DRAINAGE SWALE

SAN DIEGO & ARIZONA EASTERN RAIL ROAD
161
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA
FIGURE 4B SCALE: AS SHOWN
JUNE 2022
0 40 80

SCALE IN FEET
GIS FILE PATH: G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0004B_TCE_IN_SOIL_B29_CENTRAL.mxd - USER: dfm - LAST SAVED: 5/26/2022 1:35:47 PM LEGEND

TCE CONCETRATIONS IN VADOSE ZONE SOIL
(mg/kg)
ND
ND - 0.1

0.1 - 1.5 (HBRG)

1.5 - 27 (GPL)
> 27 (GPL)

FORMER MILLS/LATHES

FORMER VESSELS AND VAULTS

UST (UNDERGROUND STORAGE TANK) BASED ON
DEH EVALUATION OF CCR TITLE 23. CLOSED
THROUGH REMOVAL OR FILLING.

UV (UNDERGROUND VESSEL)

AST (ABOVEGROUND STORAGE TANK)

PAINT BOOTH

DEGREASER

TCE IN VADOSE ZONE SOIL
BUILDING 29 CENTRAL
BAY BLVD.

H ST.

G ST.

NOTES

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

2. ALL CONCENTRATIONS ARE IN MILLIGRAMS PER KILOGRAM (mg/kg)

3. < = LESS THAN LABORATORY DETECTION LIMITS ARE SHOWN

4. TCE = TRICHLOROETHENE

5. HIGHEST DETECTED TCE CONCENTRATION USED FOR COLOR
GRADING.

6. AERIAL IMAGERY SOURCE: NEARMAP, MARCH 2020

DETAIL AREA
29 100
99 ¨¦§5
B12

2.5' : < 0.005

20.0' : < 0.005
2 B29-14

1.0' : 0.0042 J

2.5' : 0.002 J
B29-15

0.5' : < 0.0049

2.5' : 0.0018 J
B29-16

0.5' : < 0.0052

2.5' : < 0.0049
B29-17

0.5' : < 0.005

2.5' : < 0.0051
B29-18

1.0' : < 0.0049

2.5' : < 0.0049
B29-19

1.5' : < 0.0051

4.5' : < 0.0052
B29-20

0.5' : < 0.0048

1.5' : < 0.0049
B29-21

0.5' : 0.00079 J
B29-33A

0.5' : < 0.001

4.5' : 0.00725
B29-33B

0.5' : < 0.001

1.5' : 0.323
B29-33C

0.5' : 0.000925 J

4.5' : < 0.001
B29-34A

0.5' : < 0.00100

4.5' : < 0.00100
B29-34B

0.5' : < 0.001

4.5' : < 0.001
B29-34C

0.5' : < 0.001

4.5' : < 0.001
B29-35A

0.5' : < 0.00100

4.5' : < 0.00100
B29-35B

0.5' : < 0.001

4.5' : < 0.001
B29-35C

0.5' : < 0.001

4.5' : 0.00553
UT-21

1.00 : < 0.005

5.00 : < 0.005
UT-22

1.00 : < 0.005

5.00 : < 0.005
DGA-003

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.019
DGA-004

1.0' : < 0.002

5.0' : 0.0029

10.0' : < 0.002
DGA-007

1.0' : < 0.002

5.0' : < 0.002

9.5' : < 0.002
DGA-008

1.0' : < 0.002

5.0' : 0.0032

9.5' : < 0.002
DGA-009

1.0' : < 0.002

5.0' : < 0.002

10.0' : < 0.002
DGA-011

3.5' : < 0.002

5.0' : < 0.002

10.0' : < 0.002

DRAINAGE DITCH
80 WESTERN DRAINAGE SWALE

SAN DIEGO & ARIZONA EASTERN RAIL ROAD
204
226
3-09596 3-09596
161
301
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA
FIGURE 4C SCALE: AS SHOWN
JUNE 2022
0 40 80

SCALE IN FEET
GIS FILE PATH: G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0004C_TCE_IN_SOIL_B29_SOUTH.mxd - USER: dfm - LAST SAVED: 5/26/2022 1:49:53 PM LEGEND

TCE CONCETRATIONS IN VADOSE ZONE SOIL
(mg/kg)
ND
ND - 0.1

0.1 - 1.5 (HBRG)

1.5 - 27 (GPL)
> 27 (GPL)

FORMER MILLS/LATHES

FORMER VESSELS AND VAULTS

UST (UNDERGROUND STORAGE TANK) BASED ON
DEH EVALUATION OF CCR TITLE 23. CLOSED
THROUGH REMOVAL OR FILLING.

UV (UNDERGROUND VESSEL)

AST (ABOVEGROUND STORAGE TANK)

PAINT BOOTH

DEGREASER

TCE IN VADOSE ZONE SOIL
BUILDING 29 SOUTH
BAY BLVD.

H ST.

G ST.

NOTES

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

2. ALL CONCENTRATIONS ARE IN MILLIGRAMS PER KILOGRAM (mg/kg)

3. < = LESS THAN LABORATORY DETECTION LIMITS ARE SHOWN

4. TCE = TRICHLOROETHENE

5. HIGHEST DETECTED TCE CONCENTRATION USED FOR COLOR
GRADING.

6. AERIAL IMAGERY SOURCE: NEARMAP, MARCH 2022

DETAIL AREA
29 100
99 T CE
05/24/2018
5 450/450
05/25/2018
10 3,400
B29-V 01 PCE
T CE
05/24/2018
5 780
1,500
B29-V 02
CF
T CE
05/23/2018
1 12,000
920,000
05/24/2018
5 39,000
3,000,000
B29-V 03
PCE
T CE
05/23/2018
1 --
7,500
05/23/2018
5 430
27,000
B29-V 04
B
T CE
05/23/2018
5 34/29
120/100
B29-V 06
CF
PCE
T CE
05/23/2018
1 240
2,200
7,800
05/23/2018
5 1,500
11,000
51,000
B29-V 07
PCE
T CE
05/24/2018
5 2,200
2,100
05/24/2018
10 1,600
1,500
B29-V 08
T CE
05/22/2018
1 16,000
B29-V 16
T CE
05/22/2018
1 9,800
B29-V 19
CF
T CE
07/31/2020

9.5 18,000
2,900,000
PW-02
CF
T CE
07/31/2020

9.5 6,800/7,100
1,100,000/1,100,000
PW-03
T CE
07/31/2020
5 1,400
PW-04
CF
PCE
T CE
07/31/2020
4 16,000
5,800
2,400,000
PW-05
CF
T CE
07/31/2020

3.5 1,600
160,000
PW-06
CF
T CE
07/31/2020
4 160
7,600
PW-07
BDCM
CF
T CE
07/30/2020

4.5 140
410
14,000
PW-09
PCE
07/30/2020
3 1,500
PW-12
T CE
07/30/2020
4 64,000/64,000
PW-14
T CE
07/30/2020

4.5 13,000
PW-15
cDCE
T CE
03/08/2022
1 5,800
18,000
03/08/2022
10 15,000
3,900
03/09/2022
5 140,000
6,600
DGA-004
CF
T CE
03/10/2022
2 120
5,600
03/10/2022
5 -
1,500
DGA-007
T CE
03/08/2022
2 1,300
DGA-008
cDCE
T CE
03/09/2022
2 17,000/14,000
2,300/1,900
03/09/2022
5 1,400
-
DGA-009
cDCE
T CE
03/09/2022
2 -
860
03/09/2022
5 180
-
DGA-011
T CE
03/10/2022
2 4,900
DGA-016
CF
T CE
03/08/2022
1 140/120
2,700/2,700
03/10/2022
5 -
840/890
03/10/2022
10 -
1,400
DGA-017
T CE
03/10/2022
2 2,600
03/10/2022
5 550
DGA-019
PCE
T CE
03/08/2022
1 560
770
03/10/2022
5 -
600
03/10/2022
10 770
5,000
DGA-021
CF
T CE
03/10/2022
2 190
860
03/10/2022
5 93
440
DGA-022
CF
T CE
05/22/2018
1 170
11,000
B29-V 09
99 29
100
B29-V05
B29-V07
B29-V01 B29-V02
B29-V09
B29-V10
B29-V13
B29-V11 B29-V15
B29-V16
B29-V17
B29-V19
B29-V18
B29-V12
B29-V08
B29-V04
B29-V03
B29-V06
B100-V02
B99-V03
B99-V04
B29-V14
DGA-003
DGA-004
DGA-007
DGA-008
DGA-009
DGA-011
DGA-013
DGA-014
DGA-015
DGA-016
DGA-017 DGA-019
DGA-021
DGA-022
PW-16
PW-15
PW-12 PW-11
PW-02 PW-05 PW-07
PW-03
PW-06
PW-14
PW-13
PW-08
PW-04
PW-09
ROHR, INC., A COL L INS AEROSPACE COMPANY

NORT H CAMPU S - PARCEL A

CHU L A V IST A, CAL IFORNIA
JU NE 2022
SCAL E: AS SHOWN FIGU RE 5
0 100 200

SCAL E IN FEET
GISFIL EPAT H:G:\43559_North Campus\000_Global\GIS\Maps\2022_05_GAP\127827_043_0005_SOIL _V APOR_COPCs_EX CEED_SCREEN.mxd ― U SER:dfm― L AST SAV ED:6/10/20229:06:02AM LEGEND

SOIL GAS PROBE WIT H ONE OR MORE
V OC(s) EX CEEDING AN HBRG

SOIL GAS PROBE WIT H NO HBRG

EX CEEDANCES

FORMER MIL L S/L AT HES

FORMER V ESSEL S AND V AU L T S

U ST (U NDERGROU ND ST ORAGE T ANK)

BASED ON DEH EV AL U AT ION OF CCR
T IT L E 23. CL OSED T HROU GH REMOV AL OR
FIL L ING.

U V (U NDERGROU ND V ESSEL )

AST (ABOV EGROU ND ST ORAGE T ANK)

PAINT BOOT H

DEGREASER
V AU L T (4.5 FEET BGS, INST AL L ED IN 2000)
T O BE RAZ ED AND EX CAV AT ED 5 FEET

BEL OW GROU ND SU RFACE T O

CONST RU CT L OADING DOCK

SU BJECT SIT E
NOTES

1. AL L L OCAT IONS AND DIMENSIONS ARE APPROX IMAT E.

2. SOU RCES: ABC 1998, U RS 2013, ROHR MIL L S AND

L AT HES - EQU IPMENT MANU AL

3. T HE L OCAT IONS OF FORMER V ESSEL S AND V AU L T S
FROM ABC 1998 AND U RS 2013. SOME L OCAT IONS HAV E
BEEN ADJU ST ED BASED ON SIT E RECONNAISSANCE.

4. * = T HESE SAMPL E L OCAT IONS WERE NOT EV AL U AT ED

SINCE T HEY ARE L OCAT ED IN T HE PORT ION OF T HE
BU IL DING T HAT IS T O BE DEMOL ISHED.

5. AERIAL IMAGERY SOU RCE: NEARMAP, MARCH 2022
V OCs IN SOIL GAS COMPARED T O

HEAL T H-BASED REMEDIAT ION GOAL S

BU IL DING NU MBER
B
CF
PCE
T CE
05/24/2018
5 130/140
48/56
83 450/450
05/25/2018
10 -
56 -
3,400
B29-V 01 B29-V 02
07/31/2020

LOCATION ID

SAMPLE DEPTH BELOW

GROUND SURFACE IN FEET

CHEMICAL
NAME

SAMPLING DATE

CONCENTRATIONS
IN μg/m3
ABBREV IAT IONS (HBRG [IN μg/m3] INDICAT ED IN PARANT HESES)::

X X X BDCM = BROMODICHL OROMET HANE (70)
X X X CF = CHL OROFORM (80)
X X X cDCE = cis-1,2-DICHL OROET HENE (100)
X X X PCE = T ET RACHL OROET HENE (370)
X X X T CE = T RICHL OROET HENE (350)
29 HST REET
G

ST REET
")
")
")
") ")
")
")
") ")
") ") ") ") ")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
") ")
") ")
1000
10 0
10 1
0 10
100
B15:3.3
B12:< 1
B11:< 1
UT-25:< 1
UT-22:42
UT-23:520
UT-24:4.7
UT-18:< 1 UT-19:< 1
UT-20:< 1
UT-21:< 1
UT-66:< 1
B29-32C:< 1.00 B29-28:63.8
B29-23:1280
B29-30:5.36
B29-33C:1.52*
B29-35C:17*
B29-34C:< 1*
B29-20:< 0.5*
B29-15:2.7*
B29-16:< 1*
B29-12:0.67*
B29-04: 0.79*
B29-05: 7.9*
B29-03:750* B29-07:21
DGA-005:340
DGA-012:4.7
DGA-018:7.5
DGA-020:7.2
29 G
S
T
REET
H
S
T
REET
INT ERS T AT E5

BAY BOU LEVARD
NOTES

1. ALL LOCAT IONS AND DIMENS IONS ARE APPROX IMAT E.

2. ALL CONCENT RAT IONS ARE IN MICROGRAMS PER LIT ER (μg/L)

3. * = U PPER Z ONE B DAT A

4. < = LES S T HAN LABORAT ORY DET ECT ION LIMIT S ARE S HOW N

5. T CE = T RICHLOROET HENE

6. AERIAL IMAGERY S OU RCE: S AN DIEGO COU NT Y , MARCH 2017 ROHR, INC., A COLLINS AEROS PACE COMPANY

NORT H CAMPU S - PARCEL A

CHU LA VIS T A, CALIFORNIA

T CE IN Z ONE A GROU NDW AT ER
FIGU RE 6 S CALE: AS S HOW N
J U NE 2022
LEGEND
") GROU NDW AT ER S AMPLE LOCAT ION

FORMER MILLS /LAT HES

FORMER VES S ELS AND VAU LT S

U S T (U NDERGROU ND S T ORAGE T ANK) BAS ED ON DEH
EVALU AT ION OF CCR T IT LE 23. CLOS ED T HROU GH REMOVAL OR FILLING.

U V (U NDERGROU ND VES S EL)

AS T (ABOVEGROU ND S T ORAGE

PAINT BOOT H

DEGREAS ER

T RICHLOROET HENE (T CE) CONT OU R IN Z ONE A
GROU NDW AT ER (ug/L)
T O BE RAZ ED AND EX CAVAT ED 3 FEET BBELOW GROU ND

S U RFACE T O CONS T RU CT LOADING DOCK
VAU LT (4 FEET BGS , INS T ALLED IN 2000)

S U BJ ECT S IT E
GIS FILEPAT H:G:\43559_No rth Cam pus\000_Glo bal\GIS \Maps\2022_05_GAP\127827_043_0006_EX T ENT _OF_T CE_IN_GROU NDW AT ER.m xd ― U S ER:dfm ― LAS T S AVED:5/23/20229:30:20AM 0 100 200

S CALE IN FEET
29 BU ILDING NU MBER

APPENDIX A
DEHQ Boring/Well Permit

COUNTY OF SAN DIEGO

DEPARTMENT OF ENVIRONMENTAL HEALTH & QUALITY

LAND AND WATER QUALITY DIVISION

MONITORING WELL PROGRAM

MONITORING WELL/BORING CONSTRUCTION PERMIT
SITE NAME: ROHR, INC, A COLLINS AEROSPACE COMPANY
SITE ADDRESS: 0 G ST, CHULA VISTA, CA 91910
PERMIT FOR: CONSTRUCTION OF MONITORING WELLS (2) & SOIL BORINGS (5) PERMIT APPROVAL DATE: 2/28/2022
PERMIT EXPIRES ON: 6/28/2022
RESPONSIBLE PARTY: ROHR, INC, A COLLINS AEROSPACE COMPANY (TYLER ADKINS) ______________________________________________________________________________ PERMIT TERMS:

1. Wells must have a minimum 3-foot concrete surface seal. The surface seal shall consist of concrete able to withstand the maximum anticipated load without cracking or deteriorating. The concrete should meet Class A specifications of a minimum 4000-pound compressive strength.

Bentonite slurries are not an acceptable annular sealing material in the unsaturated zone.

2. All borings must be sealed from the bottom of the boring to the ground surface with an approved sealing material as specified in California Well Standards Bulletin 74-90, Part III, Section 19.D. Drill cuttings are not an acceptable fill material. Bentonite slurries are not an acceptable fill material in the unsaturated zone.

3. All borings must be properly destroyed within 24 hours of drilling.

4. Placement of any sealing material at a depth greater than 30 feet must be done using the tremie method.

5. This work is not connected to any known unauthorized release of hazardous substances. Any contamination found in the course of drilling and sampling must be reported to the DEHQ. All water and soil resulting from the activities covered by this permit must be managed, stored and disposed of as specified in the SAM Manual in Section 5, II, D-4. In addition, drill cuttings must be properly handled and disposed in compliance with the Stormwater Best Management Practices of the local jurisdiction.

6. Within 60 days of completing work, submit a well construction report, including all well and/or boring logs and laboratory data to the Well Permit Desk. This report must include all items required by the SAM Manual, Section 5, Pages 6 & 7.

7. This office must be given 24-hour notice of any drilling activity on this site and advanced notification of drilling cancellation. Please contact the Well Permit Desk at (858) 505-6688.

NOTE: This permit does not constitute approval of a work plan as defined in Section 2722 of Article 11 of C.C.R., Title 23. Work plans are required for all unauthorized release investigations in San Diego County.

APPROVED BY: DATE: 2/28/2022
Jon Senaha
PERMIT # LMWP-005376
A.P.N. #: 571-330-35-00
EST #: RWQCB
T10000011095
52 S:\LWQ\WELL PROGRAM\Monitoring Wells\Applications (Rev. 2-2022) Page 1 of 3 County of San Diego Department of Environmental Health & Quality

PERMIT APPLICATION

GROUNDWATER

AND VADOSE MONITORING WELLS

AND EXPLORATORY OR TEST BORINGS
A. RESPONSIBLE PARTY 1 Rohr Inc., a Collins Aerospace Company E-mail [email protected]

Mailing Address 850 Lagoon Drive City Chula Vista State CA Zip 91910-2098 Contact Person Tyler Adkins Phone 619.691.2020 Ext.

INDEMNIFICATION OBLIGATION: To the fullest extent permitted by law, County shall not be liable for, and Responsible Party shall defend, indemnify and hold harmless the County and its Directors, officers, agents, employees and volunteers (collectively “County Parties”), against any and all actions, direct or third-party claims, deductibles, self-insured retentions, demands, liability, judgments, awards, fines, mechanics’ liens or other liens, labor disputes, losses, damages, expenses, charges or costs of any kind or character, including attorneys’ fees and court costs (hereinafter collectively referred to as “Claims”), which arise out of or are in any way connected to the issuance of this Permit or performance of any work pursuant to the Permit, including without limitation, any action brought to attack, set aside, void or annul the issuance of the Permit under the California Environmental Quality Act, Public Resources Code section 21000, et seq., or any other environmental law, and any action based on or alleging the damage, destruction, loss, or take of private property pursuant to Article I, Section 19, of the California Constitution or the Fifth Amendment to the U.S. Constitution, and further including, without limitation, any Claims caused by the sole passive negligence or the concurrent negligent act, error or omission, whether active or passive, of County Parties. Responsible Party shall have no obligation, however, to defend or indemnify County Parties from a Claim if it is determined by a court of competent jurisdiction that such Claim was caused by the sole active negligence or willful misconduct of County Parties.

RESPONSIBLE PARTY SIGNATURE: _______________________________ DATED: _____________________ B. SITE ASSESSMENT PROJECT NUMBER – IF APPLICABLE #
C. CONSULTING FIRM Haley & Aldrich, Inc.

Mailing Address 5333 Mission Center Road, Suite 300 City San Diego State CA Zip 92108 Registered Professional Robert K. Scott Phone619-285-7141 Registration #5334/734(PG/CHg) E-mail [email protected]
Contact Person Bob Scott Phone619-285-7141 Ext Email [email protected] D. DRILLING COMPANY CASCADE Drilling and Technical Services C57# Contact Name Jose Sagrero E-mail [email protected] Mailing Address 1333 W 9TH STREET City UPLAND State CA Zip 91786 Phone 909-946-1605 Ext.
1 Per San Diego County Code Section 67.402, the Responsible Party is any person who has, or who has contracted or otherwise caused to have, a monitoring well constructed, repaired, re-constructed or destroyed. Per this definition, the consultant and driller are not the Responsible Party. They are contracted by the Responsible Party.

OFFICE USE ONLY
PERMIT LMWP# _______________
SAM CASE Y/N # ______________
DATE RECEIVED: ______________
FEE PAID: ____________________
CHECK # _____________________
S:\LWQ\WELL PROGRAM\Monitoring Wells\Applications (Rev. 2-2022) Page 2 of 3 County of San Diego Department of Environmental Health & Quality E. CONSTRUCTION INFORMATION

TYPE OF WELLS/ BORINGS TO

BE CONSTRUCTED
#
☒ Groundwater 2 (Well Cluster)
☐ Vadose
☐ Boring
☐ Soil Vapor
☐ Other

NUMBER OF WELLS TO BE

DESTROYED
☐ Destruction

MATERIALS TO BE USED

CASING SEAL/BORING

BACKFILL
Not Applicable ☐ Neat Cement
Type Auger ☒ Cement & Bentonite
Gauge ☐ Sand-Cement
Diameter 4-inch ☐ Bentonite
Screen Size ☐ Other
Filter Pack Borehole diameter
Drilling Method
☐ Auger ☐ Air Rotary
☐ Direct Push ☒ Sonic
☐ Other ☐ Percussion

PROPOSED CONSTRUCTION
Estimated Groundwater Depth:
10 ft.

Estimated Depth of Boring:
25 and 55 ft.

Concrete Seal: 0 to 3
Annular Seal: to
Filter Pack: to
Perforation: to
(See attached for well
completions)
NOTE: Attach a well
construction diagram
I agree to comply with the requirements of the current Site Assessment and Mitigation Manual, and with all ordinances and laws of the County of San Diego and the State of California pertaining to well/boring construction and destruction.

DRILLER’S SIGNATURE ____________________________________________ DATE __________________________ Within 60 days of completion, I will furnish the Monitoring Well Permit Desk (858) 505-6688 with a complete well/boring log.

I will certify the design and construction or destruction of the well/borings in accordance with the permit application.

PG/RCE/CEG SIGNATURE __________________________________________ DATE __________________________ F. SITE INFORMATION - A Property Owner Consent agreement is required for all applications, except for onsite, open LOP/SAM site assessment cases, Caltrans properties and military properties. Submit a separate sheet for additional parcels.

1. ASSESSOR’S PARCEL NUMBER 571-330-29-00
Site Name Rohr, Inc , a Collins Aerospace Company
Site Address 850 Lagoon Drive City Chula Vista Zip 91910 PROPERTY OWNER Emil J. Wohl PSIP Wohl Bay Boulevard LLC Phone 619.296.4113 Ext. Fax : 619.374.2934
Mailing Address 2251 San Diego Avenue, Suite A-247 City San Diego State CA Zip 92110 NUMBER OF WELLS 2 TYPE OF WELLS Monitoring Wells

2. ASSESSOR’S PARCEL NUMBER
Site Address City Zip

PROPERTY OWNER
Phone Ext. Fax
Mailing Address City State Zip

NUMBER OF WELLS TYPE OF WELLS
2/17/2022
S:\LWQ\WELL PROGRAM\Monitoring Wells\Applications (Rev. 2-2022) Page 3 of 3 County of San Diego Department of Environmental Health & Quality G. QUESTIONNAIRE: Please answer all applicable questions completely and submit any required supportive documentation.

1. What is the purpose of the well/boring investigation? ☒ a. Part of an ongoing site assessment case in which a government regulator is the lead agency.

If yes, indicate which government regulator is the lead agency and the case number. ☐ Department of Environmental Health
☒ Regional Water Quality Control Board T10000011095
☐ Department of Toxic Substances Control
☐ b. Part of a Phase I investigation for property ownership transfer. ☐ c. Geotechnical investigation for proposed construction or land stabilization. ☐ d. Other:

2. If wells are to be destroyed, provide a description of method of destruction

3. Are you proposing a variation from current SAM Manual Requirements for the construction or destruction of borings, Vadose and/or Groundwater Monitoring Wells? If yes, specify these variations and include a well construction diagram and all required supporting documentation. Refer to the SAM Manual Appendix B for monitoring well guidelines. Yes ☐ No ☒
Zone A Well
4-inch Diameter, Schedule 40 PVC Casing
(0.010-inch slotted)
(No. 2/12 sand to a level of approx. 2 feet above screen) 25 feet
15 feet
13 feet
(Hydrated during placement)
Upper Zone B Well (TD=Approx. 55 feet bgs)
4-inch Diameter, Schedule 40 PVC Casing
(0.010-inch slotted)
(No. 2/12 sand to a level of approx. 2 feet above screen) 55 feet
45 feet
43 feet
(Hydrated during placement)

AMY HARBERT ACTING DIRECTOR

DEPARTMENT OF ENVIRONMENTAL HEAL TH & QUALITY

LAND AND WATER QUALITY DIVISION
P.O. BOX 129261, SAN DIEGO, CA 92 11 2-9261
Phone: (858) 505-6688 or (800) 253-9933 Fax: (858) 505-6789 www.sdcdeh.org

PROPERTY OWNER CONSENT
Proposed locations for subsurface work:

Property Address:
850 Lagoon Drive
Assessor's Parcel Number (APN):
571-330-29-00
Chula Vista, CA 91910-2098
I, Emil J. Wohl, owner of the property/properties listed above, give my permission to Haley & Aldrich, Inc. (consulting company, contractor) to conduct the following work at the locations stated above. x D Install i monitoring wells D Destroy __ monitoring wells xD Drill _g__ soil borings I understand that Robert K. Scott (registered professional) of Haley & Aldrich, Inc. (consulting company) and an authorized signer for Cascade Drilling and H&P Geochemistry ( drilling companies) have submitted a signed application to the Department of Environmental Health & Quality (DEHQ) in which they have agreed to complete the above-stated work according the requirements of the current SAM Manual, all ordinances and laws of the County of San Diego and the State of California pertaining to well/boring construction and destruction. I have arranged with the Responsible Party, the person who causes to have monitoring wells/borings installed or existing wells destro on this property, to ensure proper closure of the monitoring wells/borings.

Property Owner Signature:

Print Name: Emil J. Wohl Title: Principal
Company: PSIP Wohl Bay Boulevard LLC
Mailing Address : 2251 San Diego Avenue, Suite A-247, San Diego, CA 92110 S:\LWQIWELL PROGRAM\Monitoring Wells\Applications (Rev. 2-2021) ?@A@
B29-V07 PW-12
29 B29-23
TCE(AB): 37.8
B29-24
TCE(B): 7.83
PW-15
PW-07
PW-05
PW-02
PW-03
PW-06
PW-14
PW-04
PW-09
B29-V01
B29-V02
B29-V09
B29-V16
B29-V19
B29-V08
B29-V04
B29-V03
57133024
57133016
57133029
56702216

BAY BOULEVARD
1000
100
100
PW-11
ROHR, INC., A COLLINS AEROSPACE COMPANY

NORTH CAMPUS - PARCEL A

CHULA VISTA, CALIFORNIA
FIGURE 1
SCALE: AS SHOWN
FEBRUARY2022
0 80 160

SCALE IN FEET
GIS FILE PATH: C:\Users\khensen\OneDrive - haleyaldrich.com\Desktop\KH_LOCAL\127827_North_Campus\GIS\Maps\2021_11\127827_039_0002_PARCEL_A_PROPOSED_EXPLORATION_LOCATIONS.mxd - USER: khensen - LAST SAVED: 11/3/2021 5:48:54 AM LEGEND

SOIL GAS PROBE AND/OR SOIL BORING
NOT ANALYZED FOR VOCs IN SOIL
ANALYZED FOR VOCs IN SOIL
VOCs EXCEEDING SCREENING CRITERIA

GPL (SOIL)

COMMERCIAL/INDUSTRIAL DTSC-SL (SOIL)

SOIL GAS SAMPLE LOCATION WITH

CONCENTRATIONS GREATER THAN

HEALTH-BASED REMEDIATION GOALS

SUBJECT SITE

TRICHLOROETHENE (TCE) CONTOUR IN
ZONE A GROUNDWATER (ug/L)
VAULT (4 FEET BGS, INSTALLED IN 2000)

ASSESSOR'S PARCEL BOUNDARY AND
NUMBER
NOTES

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

2. TCE CONCENTRATIONS ARE REPORTED IN MILLIGRAMS PER KILOGRAM (mg/kg).

3. TCE = TRICHLOROETHENE

4. POSTSCRIPT KEY:
(A) = EXCEEDS GPL
(B) = EXCEEDS COMMERCIAL/INDUSTRIAL DTSC-SL

5. AERIAL IMAGERY SOURCE: NEARMAP, 3 SEPTEMBER 2021

PROPOSED EXPLORATION LOCATIONS

BUILDING NUMBER
56701029
29 PROPOSED SAMPLE LOCATIONS ?@A@

HYDROPUNCH BORING (FIVE)

GROUNDWATER MONITORING

WELL CLUSTER (TWO WELLS)

APPENDIX B
Boring and Well Logs

1.0 2.5

5.0 10.0

0.5 3.5

10.0 CL
SM
6-in. CONCRETE
Yellowish to dark brown silty SAND, no odor, moist, with trace angular gravel -FILLYellowish to reddish-brown sandy CLAY, no odor, moist -BAY POINT FORMATIONYellowish-brown silty SAND, no odor, moist BOTTOM OF EXPLORATION 10.0 FT
DGA-003-1 Soil
Probe
DGA-003-5 Soil
Probe
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,809,943
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,698
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-003
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.6
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

1.75 -
Inside Diameter (in.)
Driller
-
-
Date Bottom
Filter Sand
Dilatancy: R - Rapid S - Slow N - None
Toughness: L - Low M - Medium H - High
*Note: Maximum particle size is determined by direct observation within the limitations of sampler size.

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-003
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 5.0

10.0 10.0

0.5 5.0

10.0 CL
6-in. CONCRETE
Yellowish to reddish-brown silty SAND, no odor, moist
-FILLReddish-brown to dark brown sandy CLAY, no odor, moist -BAY POINT FORMATIONBOTTOM OF EXPLORATION 10.0 FT
DGA-004-1 Soil
Probe
DGA-004-5 Soil
Probe
DGA-004-0 Soil
Probe
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,000
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,714
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-004
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.5
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-004
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample Depth (ft) Depth (ft) 0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

20.0 20.0

0.5 4.0

20.0 CL
6-in. CONCRETE
Yellowish to reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to dark brown sandy CLAY, strong petroleum-like odor, moist, with trace angular gravel -BAY POINT FORMATIONDGA-005-20 GW BOTTOM OF EXPLORATION 20.0 FT ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,809,985
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,673
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-005
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-005
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample Depth (ft) Depth (ft) 0 5
10 15
20 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 9.5

9.5 10.0

0.5 3.5

9.0 10.0
CL
SM
6-in. CONCRETE
Yellowish to dark-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to brown sandy CLAY, no odor, moist -BAY POINT FORMATIONReddish-brown silty SAND, no odor, moist BOTTOM OF EXPLORATION 10.0 FT
DGA-007-1 Soil
Probe
DGA-007-5 Soil
Probe
DGA-007-9.5
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,809,924
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,723
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-007
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.6
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-007
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 5.0

10.0 10.0

0.5 3.0

9.0 10.0
CL
SM
6-in. CONCRETE
Yellowish to dark-brown silty SAND, no odor, moist, with trace angular fine to medium gravel -FILLYellowish-brown to reddish-brown sandy CLAY, no odor, moist -BAY POINT FORMATIONReddish-brown silty SAND, no odor, wet, with fine to medium sand BOTTOM OF EXPLORATION 10.0 FT
Note: Hydropunch at 19 ft bgs.

DGA-009-1 Soil
Probe
DGA-009-5 Soil
Probe
DGA-009-5
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,809,909
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,693
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-008
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.4
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-008
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 10.0

0.5 3.5

5.0 10.0
ML
CL
6-in. CONCRETE
Yellowish to brown silty SAND, no odor, moist, with trace angular gravel -FILLBrown to dark brown SILT, no odor, moist
-BAY POINT FORMATIONYellowish to reddish-brown silty CLAY, no odor, moist BOTTOM OF EXPLORATION 10.0 FT
DGA-003-1 Soil
Probe
DGA-003-5 Soil
Probe
ND
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,052
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,672
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-009
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.5
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-009
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 10.0

0.5 3.5

7.0 10.0
ML
SM
6-in. CONCRETE
Yellowish to brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown CLAY, no odor, moist
-BAY POINT FORMATIONYellowish-brown silty SAND, no odor, moist, with mica BOTTOM OF EXPLORATION 10.0 FT
DGA-003-1 Soil
Probe
DGA-003-5 Soil
Probe
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,071
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,642
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-011
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.5
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 8, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-011
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

19.5 20.0

0.5 5.5

16.0 20.0
CL
SM
6-in. CONCRETE
Reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLYellowish-to reddish-brown silty CLAY, no odor, moist, with mica -BAY POINT FORMATIONReddish-brown silty SAND, no odor, wet BOTTOM OF EXPLORATION 20.0 FT
DGA-017-20 GW
ND
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,315
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,596
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-012
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.7
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-012
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 15
20 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 5.0

10.0 10.0

0.5 2.0

9.0 10.0
CL
SM
6-in. CONCRETE
Yellowish-brown to reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLYellowish to reddish-brown silty CLAY, no odor, moist -BAY POINT FORMATIONYellowish-brown silty SAND, no odor, moist BOTTOM OF EXPLORATION 10.0 FT
DGA-013-1 Soil
Probe
DGA-013-5 Soil
Probe
DGA-013-10 Soil
Probe
ND
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,322
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,573
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-013
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.8
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-013
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

2.5 3.5

5.0 5.0

10.0 10.0

0.5 4.0

10.0 CL
SM
6-in. CONCRETE
Reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to brown silty CLAY, no odor, moist -BAY POINT FORMATIONSilty SAND, trace angular gravel
BOTTOM OF EXPLORATION 10.0 FT
DGA-014-3.5
Soil Probe
DGA-014-5 Soil
Probe
DGA-014-10 Soil
Probe
ND
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,300
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,612
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-014
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.7
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-014
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 5.0

10.0 10.0

0.5 4.0

8.0 8.5

10.0 CL
SM
CL
6-in. CONCRETE
Yellowish to reddish-brown sandy SILT, no odor, moist, with trace angular gravel -FILLYellowish to reddish-brown to brown silty CLAY, no odor, moist -BAY POINT FORMATIONReddish-brown silty SAND, no odor, moist, with angular gravel Yellowish to reddish-brown to brown silty CLAY, no odor, moist BOTTOM OF EXPLORATION 10.0 FT
DGA-015-1 Soil
Probe
DGA-015-5 Soil
Probe
DGA-015-10 Soil
Probe
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,336
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,600
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-015
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 16.9
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-015
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 5.0

10.0 10.0

0.5 3.0

10.0 CL
6-in. CONCRETE
Reddish-brown to brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to brown silty CLAY, no odor, moist -BAY POINT FORMATIONBOTTOM OF EXPLORATION 10.0 FT
DGA-016-1 Soil
Probe
DGA-016-5 Soil
Probe
DGA-016-10
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,533
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,560
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-016
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 17.9
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-016
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 1.0

5.0 5.0

10.0 10.0

0.5 3.5

6.0 9.0

10.0 ML
SM
SM
CL
6-in. CONCRETE
Reddish-brown sandy SILT, no odor, moist
-BAY POINT FORMATIONReddish-brown silty SAND, no odor, moist Yellowish to reddish-brown silty clayey SAND, no odor, moist Yellowish to reddish-brown silty CLAY, no odor, moist
BOTTOM OF EXPLORATION 10.0 FT
DGA-017-1 Soil
Probe
DGA-017-5 Soil
Probe
DGA-017-10 Soil
Probe
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,536
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,510
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-017
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 17.9
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-017
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

20.0 20.0

0.5 2.5

7.5 11.0

15.0 18.5

20.0 ML
CL
ML
CL
ML
SM
6-in. CONCRETE
Reddish-brown sandy SILT, no odor, moist, with trace angular gravel -BAY POINT FORMATIONDark reddish-brown sandy CLAY, no odor, moist, with trace carbonates Yellowish-brown to reddish-brown sandy SILT, no odor, moist, with trace angular gravel Yellowish-brown silty CLAY, no odor, moist, with mica
6-in. of reddish-brown to dark brown sandy SILT, with trace angular gravel Yellowish-brown to dark brown silty SAND, no odor, wet, with mica DGA-017-20 Soil BOTTOM OF EXPLORATION 20.0 FT
Probe
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,527
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,534
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-018
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 17.8
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-018
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 15
20 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 6.5

10.0 10.0

0.5 2.5

10.0 CL
CL
6-in. CONCRETE
Reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to dark brown silty CLAY, no odor, moist -BAY POINT FORMATION2-in. reddish-brown to dark brown silty CLAY, no odor, moist, with angular gravel at 7 ft bgs BOTTOM OF EXPLORATION 10.0 FT
DGA-019-1 Soil
Probe
DGA-019-6.5
Soil Probe
DGA-019-10 Soil
Probe
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,516
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,525
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-019
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 17.8
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-019
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample Depth (ft) Depth (ft) 0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

20.0 20.0

0.5 3.5

11.5 12.5

15.0 16.5

17.0 20.0
CL
SM
CL
SM
CL
SM
6-in. CONCRETE
Yellowish-brown to reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to dark brown silty CLAY, no odor, moist -BAY POINT FORMATIONYellowish-brown to reddish-brown silty SAND, no odor, moist, with mica Yellowish-brown silty CLAY, no odor, moist, with mica
Yellowish-brown silty SAND, no odor, moist
Yellowish-brown sandy CLAY, no odor, moist, with mica
Yellowish-brown silty SAND, no odor, wet, with mica
DGA-020-20 GW BOTTOM OF EXPLORATION 20.0 FT
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,623
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,468
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-020
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 18.3
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-020
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 15
20 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 1.0

5.0 5.0

10.0 10.0

0.5 3.0

10.0 CL
6-in. CONCRETE
Reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to yellowish-brown sandy CLAY, no odor, moist, with mica -BAY POINT FORMATIONBOTTOM OF EXPLORATION 10.0 FT
DGA-021-1 Soil
Probe
DGA-021-5 Soil
Probe
DGA-021-10 Soil
Probe
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,620
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,460
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-021
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 18.2
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-021
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 2.5

5.0 5.0

10.0 10.0

0.5 3.5

7.5 10.0
ML
CL
6-in. CONCRETE
Reddish-brown silty SAND, no odor, moist, with trace angular gravel -FILLReddish-brown to yellowish-brown sandy CLAY, no odor, moist, with mica -BAY POINT FORMATIONYellowish-brown to reddish-brown sandy CLAY, no odor, moist BOTTOM OF EXPLORATION 10.0 FT
DGA-022-1 Soil
Probe
DGA-022-5 Soil
Probe
DGA-022-10 Soil
Probe
ND
ND
ND
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,628
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,484
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-022
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 18.3
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-022
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
10 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.0 1.0

3.0 3.0

4.5 4.5

0.5 1.3

2.8 5.0
ML
CL
6-in. CONCRETE
Yellowish-brown silty SAND, no odor, moist
-FILLYellowish-brown to reddish-brown sandy SILT, no odor, moist, with trace angular gravel 2-in. decomposed asphalt at 1.5 ft bgs
-BAY POINT FORMATIONReddish-brown silty CLAY, no odor, moist, with trace angular gravel BOTTOM OF EXPLORATION 5.0 FT
DGA-024-1 Soil
Probe
DGA-024-3 Soil
Probe
DGA-024-4.5
Soil Probe

47.2 100.9
111.2
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,707
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,462
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-024
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 18.7
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 10, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-024
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 10, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample Depth (ft) Depth (ft) 0 5
Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

1.5 1.5

3.0 3.0

5.0 5.0

0.5 1.5

3.0 5.0
ML
CL
6-in. CONCRETE
Yellowish-brown silty SAND, no odor, moist
-FILLReddish-brown clayey SILT, no odor, moist, with trace angular gravel -BAY POINT FORMATIONReddish to dark brown silty CLAY, no odor, moist BOTTOM OF EXPLORATION 5.0 FT
DGA-025-1.5
Soil Probe
DGA-025-3 Soil
Probe
DGA-025-5 Soil
Probe

11.7 3.2

3.3 -
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,714
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,483
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-025
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 18.8
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 10, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-025
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 10, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample Depth (ft) Depth (ft) 0 5
Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

2.5 3.0

4.0 4.5

5.5 6.0

2.0 3.0

6.0 CL
6-in. CONCRETE
Reddish-brown silty SAND, no odor, moist
-FILLReddish-brown silty CLAY, no odor, moist
-BAY POINT FORMATIONBOTTOM OF EXPLORATION 6.0 FT
DGA-026-3 Soil
Probe
DGA-026-4.5
Soil Probe
DGA-026-6 Soil
Probe

0.4 0.8

1.8 -
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,731
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,494
Bit Type:

G H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
DGA-026
Time (hr.)
-
of Casing
Bottom
Automatic Hammer
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID
Geoprobe shoe 18.9
O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Geoprobe
Sheet No.

March 10, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
DGA-026
Samples
Datum
Elevation
K. Seymour
K. Nelson
March 10, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Parcel A Data Gap Investigation-Building 29
Rohr, Inc. a Collins Aerospace Company
Cascade Environmental
H&A WNC GEOPORBE REPORT LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE.GPJ May 2, 22 Sample
Depth (ft)Depth (ft)
0 5
Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

GEOPROBE BORING REPORT

0.7 2.0

10.0 15.0

20.0 CL
SM
SM
ML
SM
SM
-ASPHALTBrown CLAY, no odor, dry
-BAY POINT FORMATIONLight brown fine to medium SAND, no odor, dry Brown silty SAND, no odor, moist, trace of clay
Light brown SILT, no odor, wet, with mica
Brown fine grain silty SAND, no odor, wet
Dark brown to reddish-gray fine to coarse SAND, no odor, wet BOTTOM OF EXPLORATION 20.0 FT
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
1 Drill Mud:

Hammer Weight (lb) --- N 1,810,684
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,375
Bit Type:

None H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
NCW-021A
Time (hr.)
-
of Casing
Bottom
8-inch and 10-inch diameter
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID

14.8 O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Limited-access Hollow-stem Auger
Sheet No.

March 9, 2022
of Hole
-

Cuttings
MiniRAE 3000 10.6 eV bulb
NCW-021A
Samples
Datum
Elevation
B. Carranza
N. Samara
March 9, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Rohr, Inc. a Collins Aerospace Company
Cascade Drilling
Parcel A Data Gap Investigation-Building 29
H&A WNC TEST BORING LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE - NCW-21A AND B.GPJ May 2, 22

TEST BORING REPORT
Sample
Depth (ft)Depth (ft)
0 5
10 15
20 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

0.5 5.0

0.5 1.0

10.0 11.0

16.5 SM
SM
ML
SM
SP
Hand Auger 0 to 5 ft.
-ASPHALT-
-GRAVEL ROAD BASELight brown fine to medium SAND, no structure, no odor, moist -BAY POINT FORMATIONLight brown silty SAND, no odor, moist, with mica, trace clay at 4.5 ft Brown SILT, no odor, moist to wet, with mica
Brown silty SAND, no odor, wet, with mica
Brown coarse SAND, no odor, wet
NCW-021B-050
-
Depth (ft) to:

Drilling Equipment and Procedures
Summary
Field Tests:
2 Drill Mud:

Hammer Weight (lb) - C - N 1,810,696
Boring No.

Casing
Casing:

PID Make & Model:

Hoist/Hammer:

Elapsed Riser Pipe
Start
E 6,300,371
Bit Type:

S H&A Rep.

Plasticity: N - Nonplastic L - Low M - Medium H - High
Dry Strength: N - None L - Low M - Medium H - High V - Very High 1 127827-043
See Plan
Type
Location
NCW-021B
Time (hr.)
-
of Casing
Bottom
8-inch and 10-inch diameter
Time
Water Level Data
Boring No.

Note: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Sample ID

14.8 O - Open End Rod
T - Thin Wall Tube
Barrel
Water
NAVD88
File No.

Concrete
Hammer Fall (in.)
Bentonite Seal
Finish
U - Undisturbed Sample
S - Split Spoon Sample
Sampler
Overburden (ft)
Rock Cored (ft)
of
Rig Make & Model:

Grout
Screen
Well Diagram
Limited-access Hollow-stem Auger
Sheet No.

March 9, 2022
of Hole
4 2.5
-
Inside Diameter (in.)
Driller
-
-
Date Bottom
Filter Sand
Dilatancy: R - Rapid S - Slow N - None
Toughness: L - Low M - Medium H - High
*Note: Maximum particle size is determined by direct observation within the limitations of sampler size.

Cuttings
MiniRAE 3000 10.6 eV bulb
NCW-021B
Samples
Datum
Elevation
B. Carranza
N. Samara
March 8, 2022
S - Split Spoon Sample
G - Geoprobe
Client
Project
Contractor
Rohr, Inc. a Collins Aerospace Company
Cascade Drilling
Parcel A Data Gap Investigation-Building 29
H&A WNC TEST BORING LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE - NCW-21A AND B.GPJ May 2, 22

TEST BORING REPORT
Sample
Depth (ft)Depth (ft)
0 5
10 15
20 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

40.0 44.0
SM
SM
CL
CL
SM
SM
Dark brown to gray fine to coarse SAND, no odor, wet
Becomes gray to olive
Note: Continuous sampling resumes.

Brown to red silty CLAY, no odor, wet
Brown silty CLAY with sand, no odor, wet
Reddish-brown coarse SAND, no odor, wet
Becomes fine sand
NOTE: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Boring No.

File No.

Sheet No. 2 of 2
Boring No. NCW-021B
NCW-021B
127827-043
H&A WNC TEST BORING LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE - NCW-21A AND B.GPJ May 2, 22

TEST BORING REPORT
Sample
Depth (ft)
Depth (ft)
20 25
30 35
40 45
Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

51.5 SM Same as above, except bottom of the shoe change to red-brown clay BOTTOM OF EXPLORATION 51.5 FT
NOTE: Soil identification based on visual-manual methods of the USCS as practiced by Haley & Aldrich, Inc.

Boring No.

File No.

Sheet No. 3 of 2
Boring No. NCW-021B
NCW-021B
127827-043
H&A WNC TEST BORING LOG R4 127827-007_HA-LIB09.GLB HA-TB+CORE+WELL-07-1.GDT \\HALEYALDRICH.COM\SHARE\SDG_COMMON\127827_NORTH CAMPUS\043 PARCEL A DATA GAP INVESTIGATION\FIELD DATA\GINT\127827-043TB_DATABASE - NCW-21A AND B.GPJ May 2, 22

TEST BORING REPORT
Sample
Depth (ft)
Depth (ft)
50 Stratum
Change
Elev/Depth (ft)
USCS Symbol

VISUAL-MANUAL IDENTIFICATION AND DESCRIPTION
(Density/consistency, color, GROUP NAME, max. particle size*, structure, odor, moisture, optional descriptions

GEOLOGIC INTERPRETATION)
Sample No.
& Rec. (in.)
PID
Readings

APPENDIX C
Temporary Soil Gas Probe Construction Schematics

SOIL VAPOR PROBE CONSTRUCTION
Probe ID 2 and 5 foot probes Site Location Rohr Parcel A - Building 29 Project Name Rohr - Parcel A Data Gap Investigation Chula Vista, California Project Number 0127827-043 Field Personnel K. Nelson
Drilling Method Direct Push
Borehole Diameter 2.25 inches
Drilling Contractor H&P Mobile Geochemistry
Materials Used
Tubing: X 0.25 Diameter (inches)
Construction
X Teflon
Nylon
Other
Screen: Length (inches) Hydrated Granular
Diameter (inches) Bentonite
Slot Size
Construction
PVC Dry Granular Depth (ft):

Bentonite Depth (ft):

X Stainless Steel ++++ ++ ++
++++ ++ ++
Other + + + + + + ++
+ + + + ++ + +
Valve: Brass X Polycarbonate + + + + + + ++
+ + + + + + + +
X 2-Way 3-Way + + + + + + ++ Depth (ft):
+ + + + + + + +
Other + + + + + + ++
+ + + + + + + +
+ + + + + ++ + + +
+ + + + + + + + + +
+ + + + + ++ + + + Depth (ft):

Hydrated Granular
Bentonite
Dry Granular Depth (ft):

Bentonite Depth (ft):
++++ ++ ++
++++ ++ ++
+ + + + + + ++
+ + + + ++ + +
+ + + + + + ++
+ + + + + + + +
Filter Pack Sand + + + + + + ++ Depth (ft):
+ + + + + + + +
+ + + + + + ++
+ + + + + + + +
+ + + + + ++ + + +
+ + + + + + + + + +
+ + + + + ++ + + + Depth (ft):

NOT TO SCALE

5.0 5.5
Bottom of Boring (ft): 5.5

4.0 4.5

2.5 2.0
Ground Surface

1.0 0.38

1.0 1.5

SOIL VAPOR PROBE CONSTRUCTION
Probe ID 5 and 10 foot probes Site Location Rohr Parcel A - Building 29 Project Name Rohr - Parcel A Data Gap Investigation Chula Vista, California Project Number 0127827-043 Field Personnel K. Nelson
Drilling Method Direct Push
Borehole Diameter 2.25 inches
Drilling Contractor H&P Mobile Geochemistry
Materials Used
Tubing: X 0.25 Diameter (inches)
Construction
X Teflon
Nylon
Other
Screen: Length (inches) Hydrated Granular
Diameter (inches) Bentonite
Slot Size
Construction
PVC Dry Granular Depth (ft):

Bentonite Depth (ft):

Hydrated Granular
Bentonite
Dry Granular Depth (ft):

NOT TO SCALE
Ground Surface

1.0 0.38

4.0 4.5

5.0 5.5

9.0 9.5

10.0 10.5
Bottom of Boring (ft): 10.5

APPENDIX D
Well Development Logs

APPENDIX E
Waste Manifests

APPENDIX F
Professional Survey

APPENDIX G
Laboratory Analytical Reports - Eurofins Calscience

ANALYTICAL REPORT
Eurofins Calscience
2841 Dow Avenue, Suite 100
Tustin, CA 92780
Tel: (714)895-5494
Laboratory Job ID: 570-87328-1
Client Project/Site: Rohr Chula Vista - Parcel A
For:

Haley & Aldrich, Inc.
5333 Mission Center Road
Suite 300
San Diego, California 92108
Attn: Bob Scott
Authorized for release by:
3/24/2022 3:35:58 PM
Don Burley, Senior Project Manager
(657)212-3033
[email protected]
Designee for
Virendra Patel, Project Manager I
(714)895-5494
[email protected]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page.

This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature.

Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2
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Client: Haley & Aldrich, Inc.

Project/Site: Rohr Chula Vista - Parcel A
Laboratory Job ID: 570-87328-1

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Eurofins Calscience
3/24/2022
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 1 2
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15 Definitions/Glossary
Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Qualifiers

GC/MS VOA
Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.

Qualifier
Metals
Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.

Qualifier
Glossary
These commonly used abbreviations may or may not be present in this report. ¤ Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Calscience

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15 Case Narrative
Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Job ID: 570-87328-1
Laboratory: Eurofins Calscience
Narrative
Job Narrative
570-87328-1
Comments
No additional comments.

Receipt
The samples were received on 3/8/2022 7:00 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.0º C.

Receipt Exception
The container labels for the following sample did not match the information listed on the Chain-of-Custody (COC): NCW-021-B-050 (570-87328-19). The container labels list NCW-021-B-050, while the COC lists NCB-021-B-050 (collection date matches).

The clients office was contacted with the above sample receipt anomaly. The laboratory was provided written direction on how to proceed, please refer to the COC section of the report for further details.

GC/MS VOA
Method 8260B: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for the following sample associated with preparation batch 570-219484 and analytical batch 570-219456 were outside control limits: (570-87328-A-1-B MS). The associated laboratory control sample (LCS) recovery met acceptance criteria.

No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.

Metals
Method 6010B: The matrix spike / matrix spike duplicate (MS/MSD) recoveries of Antimony for preparation batch 440-669405 and analytical batch 440-669679 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits.

No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.

VOA Prep
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

Eurofins Calscience Page 4 of 72 3/24/2022
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15 Detection Summary
Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Client Sample ID: DGA-004-1 Lab Sample ID: 570-87328-1
Acetone
RL
20 ug/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type 44 F1 1 8260B Total/NA
Client Sample ID: DGA-004-5 Lab Sample ID: 570-87328-2
Acetone
RL
20 ug/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type 54 1 8260B Total/NA
cis-1,2-Dichloroethene 27 0.98 ug/Kg 1 8260B Total/NA
Trichloroethene 2.9 2.0 ug/Kg 1 8260B Total/NA
Client Sample ID: DGA-004-10 Lab Sample ID: 570-87328-3 No Detections.

Client Sample ID: DGA-009-1 Lab Sample ID: 570-87328-4
No Detections.

Client Sample ID: DGA-009-5 Lab Sample ID: 570-87328-5
Acetone
RL
20 ug/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type 42 1 8260B Total/NA
Client Sample ID: DGA-009-10 Lab Sample ID: 570-87328-6 No Detections.

Client Sample ID: DGA-011-3.5 Lab Sample ID: 570-87328-7 No Detections.

Client Sample ID: DGA-011-5 Lab Sample ID: 570-87328-8
No Detections.

Client Sample ID: DGA-011-10 Lab Sample ID: 570-87328-9 No Detections.

Client Sample ID: DGA-007-1 Lab Sample ID: 570-87328-10 No Detections.

Client Sample ID: DGA-007-5 Lab Sample ID: 570-87328-11 No Detections.

Client Sample ID: DGA-007-9.5 Lab Sample ID: 570-87328-12 No Detections.

Client Sample ID: DGA-008-1 Lab Sample ID: 570-87328-13 No Detections.

Client Sample ID: DGA-008-5 Lab Sample ID: 570-87328-14 Acetone
RL
20 ug/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type 24 1 8260B Total/NA
Trichloroethene 3.2 2.0 ug/Kg 1 8260B Total/NA
Eurofins Calscience
This Detection Summary does not include radiochemical test results.

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Client Sample ID: DGA-008-9.5 Lab Sample ID: 570-87328-15 Acetone
RL
20 ug/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type 20 1 8260B Total/NA
Client Sample ID: DGA-003-1 Lab Sample ID: 570-87328-16 No Detections.

Client Sample ID: DGA-003-5 Lab Sample ID: 570-87328-17 Acetone
RL
20 ug/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type 21 1 8260B Total/NA
Client Sample ID: DGA-003-10 Lab Sample ID: 570-87328-18 No Detections.

Client Sample ID: NCW—021-B-050 Lab Sample ID: 570-87328-19 Barium
RL

3.06 mg/Kg
Analyte Result Qualifier MDL Unit Dil Fac D Method Prep Type

61.2 5 6010B Total/NA
Chromium 18.7 1.02 mg/Kg 5 6010B Total/NA
Cobalt 7.88 1.02 mg/Kg 5 6010B Total/NA
Copper 11.5 2.04 mg/Kg 5 6010B Total/NA
Lead 2.23 2.04 mg/Kg 5 6010B Total/NA
Nickel 9.18 2.04 mg/Kg 5 6010B Total/NA
Vanadium 61.9 1.02 mg/Kg 5 6010B Total/NA
Zinc 32.7 5.10 mg/Kg 5 6010B Total/NA
Eurofins Calscience
This Detection Summary does not include radiochemical test results.

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS)
Client Sample ID: DGA-004-1 Lab Sample ID: 570-87328-1
Date Collected: 03/08/22 12:53 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,1,2-Trichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,1-Dichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,1-Dichloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2-Dibromo-3-Chloropropane ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2-Dibromoethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2-Dichlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2-Dichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2-Dichloropropane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,3-Dichlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,3-Dichloropropane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,4-Dichlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 2,2-Dichloropropane ND 4.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
2-Chlorotoluene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
4-Chlorotoluene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Acetone 44 F1 20 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
Benzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
Bromobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Bromodichloromethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Bromoform ND 4.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 cis-1,2-Dichloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 cis-1,3-Dichloropropene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Carbon disulfide ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Carbon tetrachloride ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Chlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Chloroform ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Dibromomethane ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Ethylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Isopropylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Methylene Chloride ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-004-1 Lab Sample ID: 570-87328-1
Date Collected: 03/08/22 12:53 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
Naphthalene ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac n-Butylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 o-Xylene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 p-Isopropyltoluene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 sec-Butylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Styrene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
trans-1,2-Dichloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 tert-Butylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Tetrachloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Toluene ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Trichlorofluoromethane ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Vinyl acetate ND 9.9 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 Vinyl chloride ND 0.99 ug/Kg 03/14/22 22:40 03/14/22 23:21 1 1,2-Dichloroethane-d4 (Surr) 100 64 - 141 03/14/22 22:40 03/14/22 23:21 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 107 76 - 120 03/14/22 22:40 03/14/22 23:21 1 Dibromofluoromethane (Surr) 91 47 - 142 03/14/22 22:40 03/14/22 23:21 1 Toluene-d8 (Surr) 109 80 - 120 03/14/22 22:40 03/14/22 23:21 1 Client Sample ID: DGA-004-5 Lab Sample ID: 570-87328-2
Date Collected: 03/08/22 12:55 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,1,2-Trichloroethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,1-Dichloroethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,1-Dichloroethene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2-Dibromo-3-Chloropropane ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2-Dibromoethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2-Dichlorobenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2-Dichloroethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2-Dichloropropane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,3-Dichlorobenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,3-Dichloropropane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,4-Dichlorobenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 2,2-Dichloropropane ND 4.9 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-004-5 Lab Sample ID: 570-87328-2
Date Collected: 03/08/22 12:55 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
2-Butanone ND 20 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 2-Chlorotoluene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 2-Hexanone ND 20 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
4-Chlorotoluene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Acetone 54 20 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
Benzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
Bromobenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Bromochloromethane ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Bromodichloromethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Bromoform ND 4.9 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
Bromomethane ND 20 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 cis-1,2-Dichloroethene 27 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 cis-1,3-Dichloropropene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Carbon disulfide ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Carbon tetrachloride ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Chlorobenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Chloroethane ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Chloroform ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Chloromethane ND 20 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Dibromochloromethane ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Dibromomethane ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Ethylbenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Isopropylbenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Methylene Chloride ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Naphthalene ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 n-Butylbenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 N-Propylbenzene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 o-Xylene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
m,p-Xylene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 p-Isopropyltoluene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 sec-Butylbenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Styrene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
trans-1,2-Dichloroethene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 tert-Butylbenzene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Tetrachloroethene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Toluene ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1
Trichloroethene 2.9 2.0 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Trichlorofluoromethane ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Vinyl acetate ND 9.8 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 Vinyl chloride ND 0.98 ug/Kg 03/15/22 09:17 03/15/22 17:48 1 1,2-Dichloroethane-d4 (Surr) 108 64 - 141 03/15/22 09:17 03/15/22 17:48 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 101 76 - 120 03/15/22 09:17 03/15/22 17:48 1 Dibromofluoromethane (Surr) 113 47 - 142 03/15/22 09:17 03/15/22 17:48 1 Toluene-d8 (Surr) 106 80 - 120 03/15/22 09:17 03/15/22 17:48 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS)
Client Sample ID: DGA-004-10 Lab Sample ID: 570-87328-3 Date Collected: 03/08/22 12:57 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,1,2-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,1-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,1-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2-Dibromo-3-Chloropropane ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2-Dibromoethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,3-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,3-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,4-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 2,2-Dichloropropane ND 5.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
2-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
4-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Acetone ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
Benzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
Bromobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Bromodichloromethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Bromoform ND 5.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 cis-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 cis-1,3-Dichloropropene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Carbon disulfide ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Carbon tetrachloride ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Chlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Chloroform ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Dibromomethane ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Ethylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Isopropylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Methylene Chloride ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-004-10 Lab Sample ID: 570-87328-3 Date Collected: 03/08/22 12:57 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
Naphthalene ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac n-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 o-Xylene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 p-Isopropyltoluene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 sec-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Styrene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
trans-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 tert-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Tetrachloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Toluene ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Trichlorofluoromethane ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Vinyl acetate ND 10 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 Vinyl chloride ND 1.0 ug/Kg 03/14/22 22:40 03/14/22 23:47 1 1,2-Dichloroethane-d4 (Surr) 106 64 - 141 03/14/22 22:40 03/14/22 23:47 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 108 76 - 120 03/14/22 22:40 03/14/22 23:47 1 Dibromofluoromethane (Surr) 94 47 - 142 03/14/22 22:40 03/14/22 23:47 1 Toluene-d8 (Surr) 107 80 - 120 03/14/22 22:40 03/14/22 23:47 1 Client Sample ID: DGA-009-1 Lab Sample ID: 570-87328-4
Date Collected: 03/08/22 15:23 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,1,2-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,1-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,1-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2-Dibromo-3-Chloropropane ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2-Dibromoethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,3-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,3-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,4-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 2,2-Dichloropropane ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-009-1 Lab Sample ID: 570-87328-4
Date Collected: 03/08/22 15:23 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 2-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
4-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Acetone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
Benzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
Bromobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Bromodichloromethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Bromoform ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 cis-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 cis-1,3-Dichloropropene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Carbon disulfide ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Carbon tetrachloride ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Chlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Chloroform ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Dibromomethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Ethylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Isopropylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Methylene Chloride ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Naphthalene ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 n-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 o-Xylene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 p-Isopropyltoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 sec-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Styrene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
trans-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 tert-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Tetrachloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Toluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Trichlorofluoromethane ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Vinyl acetate ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 Vinyl chloride ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:13 1 1,2-Dichloroethane-d4 (Surr) 100 64 - 141 03/14/22 22:40 03/15/22 00:13 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 105 76 - 120 03/14/22 22:40 03/15/22 00:13 1 Dibromofluoromethane (Surr) 92 47 - 142 03/14/22 22:40 03/15/22 00:13 1 Toluene-d8 (Surr) 108 80 - 120 03/14/22 22:40 03/15/22 00:13 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS)
Client Sample ID: DGA-009-5 Lab Sample ID: 570-87328-5
Date Collected: 03/08/22 15:25 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,1,2-Trichloroethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,1-Dichloroethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,1-Dichloroethene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2-Dibromo-3-Chloropropane ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2-Dibromoethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2-Dichlorobenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2-Dichloroethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2-Dichloropropane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,3-Dichlorobenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,3-Dichloropropane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,4-Dichlorobenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 2,2-Dichloropropane ND 4.9 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
2-Chlorotoluene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
4-Chlorotoluene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Acetone 42 20 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
Benzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
Bromobenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Bromodichloromethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Bromoform ND 4.9 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 cis-1,2-Dichloroethene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 cis-1,3-Dichloropropene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Carbon disulfide ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Carbon tetrachloride ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Chlorobenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Chloroform ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Dibromomethane ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Ethylbenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Isopropylbenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Methylene Chloride ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-009-5 Lab Sample ID: 570-87328-5
Date Collected: 03/08/22 15:25 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
Naphthalene ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac n-Butylbenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 o-Xylene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 p-Isopropyltoluene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 sec-Butylbenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Styrene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
trans-1,2-Dichloroethene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 tert-Butylbenzene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Tetrachloroethene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Toluene ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Trichlorofluoromethane ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Vinyl acetate ND 9.8 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 Vinyl chloride ND 0.98 ug/Kg 03/14/22 22:40 03/15/22 07:06 1 1,2-Dichloroethane-d4 (Surr) 110 64 - 141 03/14/22 22:40 03/15/22 07:06 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 106 76 - 120 03/14/22 22:40 03/15/22 07:06 1 Dibromofluoromethane (Surr) 98 47 - 142 03/14/22 22:40 03/15/22 07:06 1 Toluene-d8 (Surr) 106 80 - 120 03/14/22 22:40 03/15/22 07:06 1 Client Sample ID: DGA-009-10 Lab Sample ID: 570-87328-6 Date Collected: 03/08/22 15:27 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,1,2-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,1-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,1-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2-Dibromo-3-Chloropropane ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2-Dibromoethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,3-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,3-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,4-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 2,2-Dichloropropane ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-009-10 Lab Sample ID: 570-87328-6 Date Collected: 03/08/22 15:27 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 2-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
4-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Acetone ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
Benzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
Bromobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Bromodichloromethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Bromoform ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 cis-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 cis-1,3-Dichloropropene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Carbon disulfide ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Carbon tetrachloride ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Chlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Chloroform ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Dibromomethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Ethylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Isopropylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Methylene Chloride ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Naphthalene ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 n-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 o-Xylene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 p-Isopropyltoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 sec-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Styrene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
trans-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 tert-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Tetrachloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Toluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Trichlorofluoromethane ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Vinyl acetate ND 10 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 Vinyl chloride ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 00:39 1 1,2-Dichloroethane-d4 (Surr) 106 64 - 141 03/14/22 22:40 03/15/22 00:39 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 107 76 - 120 03/14/22 22:40 03/15/22 00:39 1 Dibromofluoromethane (Surr) 95 47 - 142 03/14/22 22:40 03/15/22 00:39 1 Toluene-d8 (Surr) 109 80 - 120 03/14/22 22:40 03/15/22 00:39 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS)
Client Sample ID: DGA-011-3.5 Lab Sample ID: 570-87328-7 Date Collected: 03/08/22 15:47 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,1,2-Trichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,1-Dichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,1-Dichloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2-Dibromo-3-Chloropropane ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2-Dibromoethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2-Dichlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2-Dichloroethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2-Dichloropropane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,3-Dichlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,3-Dichloropropane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,4-Dichlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 2,2-Dichloropropane ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
2-Chlorotoluene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
4-Chlorotoluene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Acetone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
Benzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
Bromobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Bromodichloromethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Bromoform ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 cis-1,2-Dichloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 cis-1,3-Dichloropropene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Carbon disulfide ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Carbon tetrachloride ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Chlorobenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Chloroform ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Dibromomethane ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Ethylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Isopropylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Methylene Chloride ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-011-3.5 Lab Sample ID: 570-87328-7 Date Collected: 03/08/22 15:47 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
Naphthalene ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac n-Butylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 o-Xylene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 p-Isopropyltoluene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 sec-Butylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Styrene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
trans-1,2-Dichloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 tert-Butylbenzene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Tetrachloroethene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Toluene ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Trichlorofluoromethane ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Vinyl acetate ND 9.9 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 Vinyl chloride ND 0.99 ug/Kg 03/14/22 22:40 03/15/22 01:04 1 1,2-Dichloroethane-d4 (Surr) 101 64 - 141 03/14/22 22:40 03/15/22 01:04 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 76 - 120 03/14/22 22:40 03/15/22 01:04 1 Dibromofluoromethane (Surr) 92 47 - 142 03/14/22 22:40 03/15/22 01:04 1 Toluene-d8 (Surr) 106 80 - 120 03/14/22 22:40 03/15/22 01:04 1 Client Sample ID: DGA-011-5 Lab Sample ID: 570-87328-8
Date Collected: 03/08/22 15:49 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
1,1,1,2-Tetrachloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 1,1,1-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,1,2,2-Tetrachloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,1,2-Trichloro-1,2,2-trifluoroethane ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,1,2-Trichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,1-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,1-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,1-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2,3-Trichloropropane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2,4-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2-Dibromo-3-Chloropropane ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2-Dibromoethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2-Dichloroethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,3,5-Trimethylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,3-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,3-Dichloropropane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,4-Dichlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 2,2-Dichloropropane ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Eurofins Calscience

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Client: Haley & Aldrich, Inc. Job ID: 570-87328-1
Project/Site: Rohr Chula Vista - Parcel A
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: DGA-011-5 Lab Sample ID: 570-87328-8
Date Collected: 03/08/22 15:49 Matrix: Solid
Date Received: 03/08/22 19:00
RL MDL
2-Butanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
Analyte Result Qualifier Unit D Prepared Analyzed Dil Fac 2-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 2-Hexanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
4-Chlorotoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 4-Methyl-2-pentanone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Acetone ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
Benzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
Bromobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Bromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Bromodichloromethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Bromoform ND 5.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
Bromomethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 cis-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 cis-1,3-Dichloropropene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Carbon disulfide ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Carbon tetrachloride ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Chlorobenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Chloroethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Chloroform ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Chloromethane ND 20 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Dibromochloromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Dibromomethane ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Dichlorodifluoromethane ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Ethylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Isopropylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Methylene Chloride ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Naphthalene ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 n-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 N-Propylbenzene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 o-Xylene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
m,p-Xylene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 p-Isopropyltoluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 sec-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Styrene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
trans-1,2-Dichloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 trans-1,3-Dichloropropene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 tert-Butylbenzene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Tetrachloroethene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Toluene ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1
Trichloroethene ND 2.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Trichlorofluoromethane ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Vinyl acetate ND 10 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 Vinyl chloride ND 1.0 ug/Kg 03/14/22 22:40 03/15/22 01:30 1 1,2-Dichloroethane-d4 (Surr) 109 64 - 141 03/14/22 22:40 03/15/22 01:30 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 108 76 - 120 03/14/22 22:40 03/15/22 01:30 1 Dibromofluoromethane (Surr) 95 47 - 142 03/14/22 22:40 03/15/22 01:30 1 Toluene-d8 (Surr) 106 80 - 120 03/14/22 22:40 03/15/22 01:30 1 Eurofins Calscience

Page 18 of 72 ends

Chula Vista City CouncilNovember 18, 2025

Chula Vista City Council
November 18, 2025