Final 

Finding of Suitability to Transfer #4 

for Carve-Outs I-B, I-E, I-G, I-H, I-I, I-J, I-L, I-M, I-P, 

II-G, II-I, II-P, and III-D 

Former Marine Corps Air Station 

EI Toro, California 

January 2009 

DCN: ECS-1013-0000-0105 
J:":J 3 0 2009 

CYPRESS 
January 2009 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California 

TABLE OF CONTENTS 

Finding of Suitability 

to Transfer 

ACRONYMS AND ABBREVIATIONS v 

1 PURPOSE 1 

2 PROPERTY DESCRIPTION 1 

3. REGULATORY COORDINATION 2 

3.1 Resource Conservation and Recovery Act Part B Permit 

and Subtitle C Corrective Action 2 

3..2 Resource Conservation and Recovery Act Subtitle I 

Corrective Action 3 

3..3 Comprehensive Environmental Response, Compensation, 

and Liability Act 4 

3.4 Resonrce Conservation and Recovery Act Corrective 

Action Complete Determination 4 

4. SUMMARY OF ENVIRONMENTAL CONDITIONS AND 

NOTIFICATIONS 5 

4,,1 CERCLAfRCRA 6 

411 Carve-Out 1-B 6 

4 .. 12 Carve-Out 1-E 6 

4.13 Carve-Out I-G 6 

414 Carve-Out 1-H 6 

415 Carve-Out I-I 6 

41.6 Carve-Out I-J 6 

417 Carve-Out II-G 6 

418 Carve-Out II-I 6 

41.9 Carve-Out III-D 7 

4.2 Petroleum Products and Derivatives 7 

421 Carve-Out 1-B 7 

422 Carve-Out I-I 7 

423 Carve-Out I-L 7 

424 Carve-Out I-M 8 

425 Carve-Out 1-P 8 

4.2 .6 Carve-Out II-I 8 

4.2 7 Carve-Out II-P 8 

4.2 .8 Carve-Out III-D 8 

4 . .3 Asbestos-Containing Material 8 

4.4 Lead-Based Paint 8 

4..5 Polychlorinated Biphenyls 9 

451 Carve-Out 1-B 9 

45.2 Carve-Out 1-M 9 

45.3 Carve-Out III -D 9 

4,,6 Radon 10 

4,,7 School Site Considerations 10 

5 SUMMARY OF RESTRICTIONS 10 

5,,1 Petroleum Products and Derivatives 10 

5 .. Ll Carve-Out 1-B 11 

5 .. 12 Carve-Out I-M 11 

5,.2 Asbestos-Containing Material 12 
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5,3 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

5.2 1 Calve-Out I-B 

5.22 Calve-Out II-I 

523 Calve-Out II-P 

Lead-Based Paint 

53.! Calve-Out 1-B 

532 Calve-Out I-G 

5.33 Calve-Out II-I 

5.34 Calve-Out II-P 

53.5 Carve-Out III -D 

6 ADJACENT PROPERTIES 

6.1 Calve-Out I-B 

6.2 Calve-Out I-G 

6.3 Calve-Out II-G 

6.4 Calve-Out ill-D 

7. COVENANTS 

8 ACCESS CLAUSE 

9 FINDING OF SUITABILITY TO TRANSFER 

10. REFERENCES 

ii 

Finding of Suitability 

to Transfer 

12 

12 

12 

12 

13 

13 

13 

13 

13 

13 

13 

13 

14 

14 

14 

14 

15 

16 
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Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California 

TABLES 

1 . Buildings/StructureslF acilities 

2. Environmental Requirements and Notifications 

3 Potential Release Locations 

4 Locations of Concern 

5. Locations of Concern With On-going Petroleum Conective Actions 

6.. Summary of Asbestos Surveys 

7. Monitoring/Bioventing/SVE Wells 

FIGURES 

1.. Vicinity Map 

2. Carve-Out Area Location Map 

3. Carve-Out I-B 

4 Carve-Out 1-E 

5. Carve-Out I-G 

6. Carve-Out I-H 

7. Carve-Out I-I 

8. Carve-Out I-J 

9.. Carve-Out I-L 

10 Carve-Out I-M 

11 Carve-Out 1-P 

12 Carve-Out II-G 

13 Carve-Out II-I 

14 Carve-Out II-P 

15 Carve-Out III -D 

iii 

Finding of Suitability 

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January 2009 

Final Finding of Suitability to Transfer#4 

Former MCAS EI Toro, California 

ATTACHMENTS 

CommentsiResponse to Comments 

2 Navy Initiated Revisions to November 2008 Dmft Final 

3 Final RCRA COllective Action Complete Determination Package 

4a Petroleum Products Notification I able 

4b. Hazardous Substances Notification I able 

iv 

Finding of Suitability 

to Transfer 
January 2009 

ACM 

APHO 

ASI 

BRAC 

CCR 

CERCLA 

CO 

DERP 

DoD 

DON 

DISC 

EBS 

EPA 

FAD 

FFA 

FOSI 

HSC 

IRP 

LBP 

LOC 

MCAS 

NFA 

OCHCA 

OU 

OWS 

PCB 

PCE 

ppm 

PRL 

RAD 

RCRA 

RFA 

ROD 

RWQCB 

SRU 

SWMU 

TAA 

TCE 

ISCA 

U.s. 

U.SC 

USI 

VOC 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

ACRONYMS AND ABBREVIATIONS 

asbestos-containing material 

aerial photograph featnre/anomaly 

aboveground storage tank 

Base Realigmnent and Closure 

California Code of Regulations 

Finding of Suitability 

to Transfer 

Comprehensive Environmental Response, Compensation, and Liability Act 

carve-out 

Defense Environmental Restoration Program 

Department of Defense 

Department of the Navy 

Department of Toxic Substances Control 

Environmental Baseline Survey 

Environmental Protection Agency 

friable, accessible, and damaged 

Federal Facility Agreement 

Finding of Suitability to Transfer 

Health and Safety Code 

Installation Restoration Program 

lead-based paint 

location of concern 

Marine Corps Air Station 

no further action 

Orange County Health Care Agency 

Operable Unit 

oillwater separator 

polychlorinated biphenyl 

tetrachloroethylene 

part per million 

potential release location 

radiological investigation location 

Resource Conservation and Recovery Act 

RCRA Facility Assessment 

Record of Decision 

Regional Water Quality Control Board 

silver recovery unit 

Solid Waste Management Unit 

temporary accumulation ar·ea 

trichloroethylene 

Ioxic Substances Control Act 

United States 

United States Code 

underground storage tank 

volatile organic compound 

v 

January 2009 

1. PURPOSE 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

The pUlpose of this Finding of Suitability to TIansfer (FOST) is to summarize how the requirements 

and notifications for hazardous substances, petroleum products, and other regulated material within 

Carve-Outs I-B, I-E, I-G, I-H, I-I, I-T, I-L, I-M, I-P, II-G, II-I, II-P, and III-D at former Marine Corps 

Air Station (MCAS) EI Toro have been satisfied by the United States (US) Department of the Navy 

(DON) Through the Base Realignment and Closure (BRAC) process, the DON transferred, by deed, 

certain MCAS EI Toro real property .. Other real property known as Carve-Outs (COs) was retained 

by the DON, pending environmentally suitable to transfer status This FOST was prepared in 

accordance with the Base Redevelopment and Realignment Manual (Department of Defense [DoD] 

2006), and is consistent with the DoD Base Redevelopment and Implementation Manual (DoD 

1997) 

2" PROPERTY DESCRIPTION 

Former MCAS El Toro is located in central Orange County, California (Figure I) and was 

operationally closed in July 1999 The property proposed for transfer under this FOST consists of 

13 COs comprising approximately 42 9 acres Table I presents a summary of the buildings and 

structures within the CO areas. Figure 2 is a base-wide map that provides the location of the CO 

areas. A brief description ofthe CO areas is as follows: 

• Carve-Out I-B (Figure 3) - consists of approximately 22 . .9 acres and is located in the western 

portion of the former base. 

• Carve-Out I-E (Figure 4) - consists of approximately 0 . .9 acre and is located in the western 

portion of the former base 

• Carve-Out I-G (Figure 5) - consists of approximately 04 acre and is located in the western 

portion ofthe former base 

• Carve-Out I-H (Figure 6) - consists of approximately 0.8 acre and is located in the western 

portion ofthe former base 

• Carve-Out I-I (Figure 7) - consists of approximately L I acres and is located in the western 

portion of the former base) 

• Carve-Out I-J (Figure 8) - consists of approximately 0.7 acre and is located in the western 

portion of the former base. 

• Carve-Out I-L (Figure 9)·· consists of approximately 02 acre and is located in the western 

portion of the former base. 

• Carve-Out I-M (Figure 10) - consists of approximately 1.0 acre and is located in the western 

portion ofthe former base. 

• Carve-Out I-P (Figure II) - consists of approximately 18 acres and is located in the northern 

portion of the former base, 

• Carve-Out II-G (Figure 12) - consists of approximately 7.7 acres and is located in the eastern 

portion ofthe former base, 

• Carve-Out II-I (Figure 13) - consists of approximately 04 acre and is located in the eastern 

portion ofthe former base, 

• Carve-Out II-P (Figure 14) - consists of approximately 03 acre and is located in the eastern 

portion of the former base, 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, Califomia 

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to Transfer 

• Carve-Out III-D (Figure IS) - consists of approximately 4 . .7 acres and is located in the 

western portion of the former base. 

3., REGULATORY COORDINATION 

Former MCAS EI Ioro was listed on the u.s Environmental Protection Agency (EPA) National 

Priorities List under the Comprehensive Environmental Response, Compensation, and Liability Act 

(CERCLA) in February 1990 .. Ihe Defense Environmental Restoration Program (DERP), codified as 

10 United States Code (U.S . .c) 2701-2709, gave the DoD Environmental Restoration Program a 

statutory basis The DON implements the DERP subject to, and in a manner consistent with, 

CERCLA and its regulations. 

In October 1990, U.s EPA Region 9, State of California Department of Health Services (now 

referred to as California EPAJDepartment of Ioxie Substances Control [DISC]), Santa Ana 

RWQCB, and the DON signed a Federal Facility Agreement (FFA) (DON 1990) Ihe U.s EPA, 

DISC, and Santa Ana RWQCB were notified of the initiation of this FOSI and were issued copies 

for review. Regulatory agency comments to this F OS I are provided in Attachment I 

3.1 RESOURCE CONSERVATION AND RECOVERY ACT PART B PERMIT AND SUBTITLE C 

CORRECTIVE ACTION 

Ihis FOSI reviews sites that were evaluated and addressed under DON's CERCLA and DERP 

authority as well as sites addressed under the corrective action requirements of the Resource 

Conservation and Recovery Act (RCRA) Subtitle C (for Solid Waste Management Units [SWMUs]), 

RCRA Subtitle I (for underground storage tanks [USIs]), and associated state laws and regulations 

administered by the U.S .. EPA, the State of California, and the County of Orange. Ihese corrective 

action authorities are similar to CERCLA in that they require response/corrective action (cleanup) 

where necessary in order to ensure adequate protection of human health and the environment - see 

Section 121(d) ofCERCLA, Health and Safety Code (HSC) Section 2529610(b), Iitle 23 California 

Code of Regulations (CCR) Sections 2720 (definition of "corrective action") and 2 725( c), and Title 

22 CCR Section 66264 .. 101(a).. 

A decision that no action is required in order to protect human health and the environment, made by 

DON or an environmental regulator under those laws and regulations, also supports a DON 

determination under Section l20(h) of CERCLA that all remedial action necessary to protect human 

health and the environment with respect to any such substance remaining on the property has been 

taken and a determination that all necessary RCRA Subtitle C corrective action has been completed .. 

Former MCAS El Ioro was subject to a RCRA Part B permit that was issued in June 1993 and 

expired on 18 August 2003. Ihe permit addressed one regulated unit (Building 673-13) as well as 

RCRA corrective action requir·ements for SWMUs .. The RCRA permit incorporated the FF A for 

MCAS El T oro by reference and provided, in relevant part: "The activities requir·ed by the 

Agreement are intended to satisfY the corrective action requirements of RCRA Section 3004(u) and 

(v), and 42 U.s.C Section 6924(u) and (v). Ihe Agreement and any schedules contained therein are 

hereby incorporated by reference as the schedule for completing corrective action at the facility ... " 

(Subsection V Al of the permit). Ihe FFA itself specifically requires that RCRA corrective action 

requirements be addressed in the FF A process - see subsections I l(b), L2( e), 31, 17.1, 17 2, 17.3, 

and 19 ofthe FFA (DON 1990) 

2 
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Fonner MCAS EI Taro, California 

Finding of Suitability 

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The rationale for integrating CERCLA and RCRA conective action requiIements in this fashion is 

stIaightfOlward The cleanup standard for CERCLA is set fOlth in Section 121 of CERCLA 

(CLEANUP STANDARDS), which states in the relevant part of Subsection 121(b)(I):" The 

President shall select a remedial action that is protective of human health and the envirornnent ," 

(42 USc. Section 9621(b)(I)), The cleanup standard for RCRA Subtitle C cOlrective action in the 

State ofCalifoIllia, is set fOlth in Title 22 CCR Section 66264.101(a) and provides, "The owner or 

operatOl of a facility seeking a permit for the transfer, tI'eatJnent, storage, or disposal of hazardous 

waste shall institute COllective action as necessary to protect human health and the envirornnent for 

all releases of hazardous waste 01 constituents from any solid Or hazardous waste management unit at 

the facility, regardless of the time at which waste was placed in such unit" See also HSC Sections 

25187 and 25200,.1 O(b) 

In a letter dated 8 March 1996, DTSC concUired with no further action (NFA) for Building 673-13 

and stated that the permit was terminated based on the closUie certification report that was submitted 

by DON (DTSC I 996). DON continues to complete all RCRA Part B permit COllective actions for 

the SWMU s under the 1990 executed FF A 

DTSC plOposed a RCRA COIrective Action Complete Determination for ten ofthe COs (I-E, I-G, 1-

H, I-I, I-I, I-P, II-G, II-I, II-P, and III-D), approximately 18 8 acres, as well as a Notice of Exemption 

pUisuant to the CalifoIllia Environmental Quality Act Two of the remaining COs (I-B and I-M), 

applOximately 23.9 acres, have on-going COllective action for petlOleum releases and requiIe 

additional documentation in order to satisfy the cOlrective action requirements under RCRA .. Both 

COs I-B and I-M are proposed for transfer with restIictions as discussed in Section 5,,0 CO I-L, 

applOximately 0 2 acres, received NFA during the recent public comment period but is not included 

in DTSC's RCRA COIrective Action Complete Determination, Although DON will pursue the 

RCRA COIrective Action Complete Determination at a later time, CO I-L is now plOposed for 

transfer without restIictions (see Attachment 2) 

3.2 RESOURCE CONSERVATION AND RECOVERY ACT SUBTITLE I CORRECTIVE ACTION 

The OCHCA and the RWQCB administer the UST COllective action program at fOlmer MCAS El 

Toro pursuant to RCRA Subtitle I and Section 25280-25299,8 ofthe California HSC. The authority 

ofOCHCA and the RWQCB to require COllective action at UST sites is set forth at Title 23 CCR, 

division 3, chapter 16, 

These regulations specifically define "cOlrective action" as " ",any activity necessary to investigate 

and analyze the effects of an unauthOlized release; plOpose a cost-effective plan to adequately 

protect human health, safety, and the envirornnent and to restore 01 protect cUllent and potential 

beneficial uses of water; and implement and evaluate the effectiveness ofthe activity(ies) , " (Title 

23 CCR Section 2720) FUithermore, Section 2 725 (c) of the regulations sets fOith requirements for 

cOlI'ective action plans prepared by responsible parties and states that, "The regulatOly agency shall 

concUi with the cOlrective action plan after determining that implementation of the plan will 

adequately protect human health, safety, and the envilOrnnent and will restore and plOtect cUllent 01 

potential beneficial uses of water" 

NF A letters issued by the RWQCB specifically stated that NF A determinations were based upon 

Section 272 I (e) ofthose regulations which provides "Upon completion of required COllective action, 

the regulatOlY agency shall infOlm the responsible party in W1iting that no further wOlk is required at 

that time, based on available information" 

HSC Section 25296.10(a) provides that the State Water Resource ContIol Board" ,shall develop 

cOlI'ective action requirements for health hazards and protection of the environment based on the 

3 
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Final Finding of Suitability to Transfer #4 

Former MCAS EI Toro, California 

Finding of Suitability 

to Transfer 

severity of the health hazards and the other factors listed in subdivision (b),.. "HSC Section 

25296J O(b) provides, "Any corrective action conducted pursuant to this chapter shall ensure 

protection of human health, safety, and the environment" 

The corrective action cleanup standard for US I s implemented by the R WQCB and OCHCA are 

codified in HSC Section 25296 .10(b), I itle 23 CCR 2720 (definition of "corrective action") and I itle 

23 CCR 2725( c) (soil and water investigation phase, corrective action plan). 

3.3 COMPREHENSIVE ENVIRONMENTAL RESPONSE. COMPENSATION. AND LIABILITY ACT 

CERCLA response actions are initiated at environmental sites where CERCLA hazardous substances 

have been or may have been released CERCLA response actions within the cas addressed in this 

FOSI includes installation restoration program (IRP) sites 

A CERCLA response action has been completed at IRP Site 13 within CO III-D.. Details regarding 

CERCLA response actions and the applicable restrictions for CO III-D are provided in Section 4 1.9. 

Except for preliminary investigation activities, such as soil sampling and exploratory trenching, no 

CERCLA response actions were required within the 12 remaining cas 

3.4 RESOURCE CONSERVATION AND RECOVERY ACT CORRECTIVE ACTION COMPLETE 

DETERMINATION 

DISC provided the following paragraphs summarizing the DISC RCRA Corrective Action 

Complete Determination at former MCAS EI Ioro. 

D rsc is the agency responsible for enforcing the hazardous waste laws and regulations in 

California.. California was granted authorization by the EPA to administer a state hazardous waste 

program in lieu of the federal RCRA program Ihe Hazardous Waste Control Law codified in the 

HSC is the basic law that implements the waste management system in California Section 25200.10 

and 25187 of Chapter 65 of Division 20 of the HSC provides the author ity to require corrective 

action at a hazardous waste facility.. It states that DISC, and any permit issued by DISC, shall 

require corrective action for all releases of hazardous waste or constituents from a SWMU or a 

hazardous waste management unit For the purpose of implementing corrective action, a hazardous 

waste facility is defined as all contiguous property tmder the control ofthe owner or operator of the 

facility (CCR, Iitle 22, Section 66260.10 [Definition of a Hazardous Waste Facility]). DISC's 

determination that all corrective action has been completed for a portion of a facility eliminates the 

requirement to conduct further corrective action hom the current and future owners of the property 

Attachment 3 summarizes DISC's intent to make the RCRA Conective Action Complete 

Determination for portions of the former MCAS EI Ioro identified in FOSI #4 

On November 22, 2008 a notice was published in the Los Angeles limes and the Orange County 

Register. Ihe notice invited public review and comment on the DISC's proposed RCRA Corrective 

Action Complete Determination and RCRA Hazardous Waste Facility Boundary Modification and 

on the DaN's Draft Final FOSI #4 for Carve-outs I-B, I-E, I-G, I-H, I-I, I-T, I-L, I-M, I-P, II-G, II-I, 

II-P, and III-D at the former MCAS EI Toro. The same notice also discussed DISC's proposed 

NOE prepared for the project under the CEQA Additionally, DISC mailed the public notice to all 

individuals on the MCAS EI Ioro mailing list (approximately 500) on November 21,2008 Ihe 45-

day public comment period began on November 22, 2008 and continued through January 6, 2009 .. 

DISC received no comments during the 45-day public comment period and has made a decision to 

approve the RCRA Corrective Action Complete Determination and the RCRA Hazardous Waste 

Facility Boundary Modification Ihe DON did not receive any public comments on the Draft Final 

4 
January 2009 

Final Finding of Suitability to Transfer#4 

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FOSI #4 Ihe Final RCRA Conective Action Complete Determination Package can be found in 

Attachment 3 

4" SUMMARY OF ENVIRONMENTAL CONDITIONS AND NOTIFICATIONS 

This section summarizes the environmental conditions and notifications as they relate to CERCLA 

and RCRA, peholeum products and derivatives, asbestos-containing materials (ACM), lead-based 

paint (LBP) and other regulated material within the COs 

I able 2 identifies the environmental notifications and requirements applicable to the COs. Based on 

an evaluation of the MCAS EI Ioro Environmental Baseline Survey (EBS) of September 2003 

(Earth I ech 2003), hazardous substances, peholeum products, CERCLA and RCRA response 

actions, storage tanks, oil/water separators (OWSs), ACM, LBP, polychlorinated biphenyls (PCBs), 

silver recovery units (SRUs), and radiological investigation locations (RAD) were present or have 

occurred within the COs 

Additionally, the EBS identified several facilities/features as being associated with a potential release 

of contaminants to the environment Ihese locations were first identified during the preparation of 

the 2003 EBS, and are labeled as potential release locations (PRLs) Subsequently, the FFA 

signatories agreed that the DON would prepare investigation plans, perform field evaluations, and 

provide conclusions as to whether a PRL needed to be included in a specific regulatory clean-up 

program, or whether no further investigation was wananted. I able 3 identifies and provides the 

status of the PRLs within the CO areas. Based on additional records reviews and soil sampling it was 

determined that no significant release of hazardous substances or pollutants has occurred; therefore, 

no further action is warranted at the following PRLs: CO I-B - 439 (EPA 2008, DISC 2008), 443 

(DISC 2004), and 651 (EPA 2003, DISC 2003); CO I-H - PRL 51 (EPA 2005, DISC 2005); CO I-I 

- 46 (EPA 2008, DISC 2008), and 47 (EPA 2005a, DISC 2005a); and CO I-J - 22 (EPA 2005c, 

DISC 2005b). 

Iable 4 identifies locations of concern (LOCs) within the COs LOCs are areas where a release is 

suspected to have occUlred, a documented release has occuned, or based on the types of activities 

that occuned in the area, there was a potential for a release Ihe types of LOCs present within the 

COs include: hazardous substance sites, RCRA Facility Assessment (RFA) sites, temporary 

accumulation areas (TAAs), aerial photograph feature/anomaly (APHO) sites, IRP sites, AS Is, 

USls, OWSs, SRUs, RAD sites, and PCB-containing transformers and equipment LOCs within the 

COs proposed for hansfer have received regulatory agency concurrence of NF A with the exception 

of on-going petroleum corrective actions in USls 651-1, 651-2, 651-3, and 651-4 in CO I-B and 

USI 65A in CO I-M (Iable 5) NFA designations are based on the findings of evaluations or 

cleanup actions that these LOCs are suitable for hansfer as long as the applicable notifications and 

restrictions outlined in Sections 4 and 5 respectively are adhered to .. Ihis includes LOCs that meet 

the federal and state definitions of SWMUs and received NF A designations either because no 

corrective action was required to provide adequate protection of human health and the environment, 

or the required corrective action has been completed A summary ofLOCs by type is provided in the 

following subsections. 

Past activities within the COs proposed for transfer included the use and storage of hazardous 

substances and petroleum products .. A notice of hazardous substances and peholeum products stored, 

released, or disposed at specific sites within the COs proposed for hansfer are listed in Attachments 

4a - Petroleum Products, and 4b .. Hazardous Substances Notifications 

5 
January 2009 

4.1 CERCLAIRCRA 

Final Finding of Suitability to Transfer#4 

Former MCAS EI Taro, California 

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to Transfer 

Ihe following CERCLAJRCRA sites received closure NF A concurrence within the COs. Site closure 

actions are detailed in I able 4 

4.1.1 Carve-Out 1-8 (Figure 3) 

REA Sites - REA 164 was associated with Building 651, and received site closure concuuence 

(D ISC 1996a) 

IAA Sites - IAA sites 651A (DISC 2003a) and 651B (DISC 2006) received site closure 

concurrence, 

SRUs - SRUs-I and 2 were evaluated under PRLs 439, and 443, respectively, and it has been 

determined that no further action is required (EPA 2008, DISC 2008) and (DISC 2004), 

respectively 

RAD - Ihe suspected former Radium Plaque Adaptometer Building site has received site closure 

conCUlrence hom the California Department of Health Services (California Department of Health 

Services 2006) and the EPA (EPA 2005b) 

4.1.2 Carve-Out I-E (Figure 4) 

IAA Sites - IAA 2 received site closure conCUlrence (DISC 2006a) 

4.1.3 Carve-Out I-G (Figure 5) 

IAA Sites - IAA sites 7 (DISC 2006b) and 7B (DISC 2003b) received site closure conCUlrence 

4.1.4 Carve-Out I-H (Figure 6) 

IAA Sites - IAA 51 received site closure concurrence (DISC 2006c) 

4.1.5 Carve-Out I-I (Figure 7) 

SRUs - SRU 3A was evaluated under PRL 46; it has been determined that no fUlther action is 

required (EPA 2008 and DISC 2008) 

4.1.6 Carve-Out I-J (Figure 8) 

I AA Sites - I AA 22 received site closure conCUlrence (D I SC 2006d) 

4.1.7 Carve-Out II-G (Figure 12) 

APHO Sites - APHO 118 received closure conCUlrence fiom the DISC (DISC 2007), and hom the 

RWQCB (RWQCB 2007) 

4.1.8 Carve-Outll-I (Figure 13) 

REA Sites - REA 213 received site closure concurrence hom the DISC (DISC 2003c), and hom the 

RWQCB (RWQCB 2003) 

IAA Sites -IAA 392A and 392B received site closure concurrence (DISC 2003d) 

6 
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4.1.9 Carve-Out III-D (Figure 15) 

Finding of Suitability 

to Transfer 

IRP Site - CO III-D contains Oil Change Area IRP Site 13, which received regulatory agency NF A 

concurrence from DISC, US. EPA, and RWQCB. Ihe selected remedy in the Record of Decision 

(ROD) signed on 30 September 1997, fell Site 13 was no action (DoD 1997a). No deed restrictions 

were recommended for Site 13 due to chemicals present in the soil However since the groundwater 

beneath Site 13 was contaminated by trichloroethylene (ICE) and tetrachloroethylene (PCE; also 

perchloroethylene) due to Site 24 - volatile OIganic compound (VOC) source area, when the NF A 

ROD was signed in 1997, the use restrictions prohibiting drilling of wells andiOi extraction of 

groundwater and allowing access fOi groundwater monitoring and maintenance of equipment 

associated with groundwater remediation were to be addressed in the ROD for Operable Unit (OU)-I 

Site 18 and OU-2A Site 24 (DON 1997) When the Final ROD for OU-I Site 18 and OU-2A Site 24 

was completed in 2002 (DON 2002), the updated VOC plume and 500 foot buffer zone were no 

longer located beneath Site 13.. Consequently, groundwater restrictions due to the Site 24 VOC 

plume are no longer applicable fOi Site 13. 

4.2 PETROLEUM PRODUCTS AND DERIVATIVES 

The corrective action cleanup standards for petroleum USTs implemented by the RWQCB and 

OCHCA are codified in HSC Section 25296 10Cb), Title 23 CCR 2720 (definition of "corrective 

action") and Title 23 CCR 2725(c) (soil and water investigation phase, corrective action plan). As 

noted in Section 3.1, DISC has determined that investigations and cleanups conducted under the 

oversight of the RWQCB and OCHCA on property identified in this FOSI as COs I-I, I-P, II-I, II-P, 

and III-D have satisfied the cOirective action requirements under RCRA and the Hazardous Waste 

Control Law. Although CO I-L received NFA diuing the recent public comment period, it is not 

iucluded in DISC's RCRA Corrective Action Complete Determination. COs I-B and I-M require 

additional documentation in order to satisfy the corrective action requirements under RCRA. Site 

closure actions are detailed in Table 4 .. 

4.2.1 Carve-Out 1-8 (Figure 3) 

ASls - ASls 439 (RWQCB 2000) and 651 (RWQCB 2000a) received site closure concurrence 

USls - USls 439A, 439B (OCHCA 1996), 443 (RWQCB 1995), 651-5, 651-6, 651-7 (OCHCA 

1997), 693A, and 693B (OCHCA 1996a) received site closure concurrence. USls 651-1, 651-2, 

651-3 and 651-4 received NFA for the unsaturated soils (vadose zone) (RWQCB 2008b), however, 

the groundwater associated with these tanks is part of an on-going petroleum cOirective action (see 

Section 5 . .1 for restrictions) 

OWSs - All necessary response actions related to OWS 651-8 (RWQCB 2000b) have been 

completed with a determination that no further action is necessary. 

4.2.2 Carve-Out I-I (Figure 7) 

ASI s - AST 47 received site closure concurrence (RWQCB 2002). 

USTs·· USls 46 (OCHCA 1996b), 47A, and 47B (RWQCB 1999) received site closure concurrence 

4.2.3 Carve-Out I-L (Figure 9) 

UST s - USI 254 (RWQCB 2008c) has received site closure concurrence 

7 
January 2009 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California 

4.2.4 Carve-Out I-M (Figure 10) 

Finding of Suitability 

to Transfer 

USIs - USI 65A is undergoing remedial actions fOl a petmleum release (See Section 5.1 fOl 

restrictions) . 

4.2.5 Carve-Out I-P (Figure 11) 

USIs - USIs 75A (RWQCB 1995a), 75B (RWQCB 1996), 75C (RWQCB 2008), and 75D 

(OCHCA 2004) received site closure concUlrence 

4.2.6 Carve-Out II-I (Figure 13) 

USIs - USIs 308 (RWQCB 2006), 392A (OCHCA 1996c), 392B (OCHCA 1997a), 392C (OCHCA 

1997b), 392D (RWQCB 2004), 392E, and 392F (OCHCA 1999) received site closure concunence 

USI 764A received site closure concUlrence fiom the DISC (DISC 2006e), and the RWQCB 

(RWQCB 2006a) 

OWSs - OWS 764B received site closure concUlrence that no fUlther action is necessruy flOm DISC 

in (DISC 2006e), and fiom the RWQCB (RWQCB 2006a) 

4.2.7 Carve-Out II-P (Figure 14) 

ASIs - ASI 637 received site closure concUlrence (EPA 2003a, DISC 2003) 

USIs - USIs 637-1, 637-2, and 637-3 received site closure concunence (RWQCB 2008a). 

4.2.8 Carve-Out 111-0 (Figure 15) 

USIs - USIs 176, 177, 178, 179, 180, 181, 182, 183, and I-5received site closure concunence hom 

the RWQCB for vadose zone soil (RWQCB 2000c), and for glOundwater (RWQCB 2007a) 

4.3 ASBESTOS-CONTAINING MATERIAL 

It is DoD policy to manage ACM in a manner plOtective of human health and the environment, and 

to comply with all applicable federal, state, and local laws and regulations goveming ACM hazruds 

(DoD 1994a) Iherefore, unless it is determined by a competent authOlity that ACM on the property 

poses a tlueat to human health at the time of transfer, all property containing ACM will be conveyed, 

leased, or otherwise disposed "as is" tluough the BRAC process. If ACM in a building does pose a 

threat to human health or the environment, occupation of the building will be prohibited until the 

ACM is abated 01 the building is demolished by a transferee Remediation of ACM is not required in 

buildings that are scheduled fOl demolition by the transferee 

Ihere rue a total of seven buildings within five ofthe COs proposed for transfer. Information on the 

existence, extent, and condition of ACM at buildings/structures/facilities is provided in I able 6 

4.4 LEAD-BASED PAINT 

Notifications of potential LBP at buildings within the COs proposed for transfer are based on the age 

of construction (i.e., constructed before the Consumer Product Safety Commission's 1978 ban on 

LBP for residential use).. Ihe COs proposed for transfer contain buildings that were constructed prior 

to 1978 and may contain LBP Ihe age of many ofthe buildings on the plOperty suitable for transfer 

suggests the likelihood that LBP may be present on some of these buildings .. Ihis in tum creates the 

possibility that, through the action of normal weathering and maintenance, there may be lead hom 

LBP in the soil sUllOunding these buildings Ihe constmction dates for each of the buildings within 

the COs are summarized in Table L 

8 
January 2009 

Final Finding of Suitability to Transfer#4 

Fonner MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

Demolition of non-residential buildings constructed priOi to 1978 creates the possibility oflead being 

found in the soil as a result of such activities .. With respect to any such non-residential buildings 

which the transferee intends to demolish and redevelop for residential use after transfer, the 

transferee may, under applicable law or regulation, be required by DISC or other regulatOIY 

agencies to evaluate the soil adjacent to such non-residential buildings for soil-lead hazards, and to 

abate any such hazards that may be present, after demolition of such non-residential buildings and 

prior to occupancy of any newly constructed residential buildings. 

4.5 POLYCHLORINATED BIPHENYLS 

Ballasts in fluorescent light fixtures made priOi to 1979 may contain sealed PCB-containing 

components. A survey of the station fOi PCB-containing light ballasts has not been conducted; 

however, it is assumed that buildings, structures, and facilities constlUcted prior to 1979 have PCBs 

in the ballasts of older light fixtures .. It should be noted that many buildings that were constructed 

prior to 1979 have had interior renovations and new light fixtures installed that do not contain PCBs 

Fluorescent light ballasts manufactured before 1979 often contain PCB capacitOis that may be 

disposed as municipal solid waste. No action is required at buildings, structures, and facilities unless 

large quantities of PCB-containing fluorescent light ballasts are removed AccOiding to DON 

guidance on the disposal of fluorescent light ballasts containing PCBs (DON 1989), when a large 

quantity of PCB capacitors needs to be disposed, they should be handled as regulated PCB 

equipment Fluorescent light ballasts that contain PCBs have approximately 10 to 1.5 ounces of 

PCB fluid in each capacitOI .. There are approximately 3.1 to 4 . .7 pounds of PCB fluid fOi every 

50 PCB small capacitors in fluorescent light ballasts 

Ihe disposal of PCBs is regulated under the federal Toxic Substances Control Act (TSCA) 

(15 USc. Section 2601, et seq, as implemented by 40 Code of Federal Regulations Part 761), 

which banned the manufacture and distribution of PCBs, with the exception of PCBs used in 

enclosed systems. By federal definition, PCB equipment contains 500 parts per million (ppm) PCBs 

OI more, whereas PCB-contaminated equipment contains PCB concentrations equal to or greater than 

50 ppm, but less than 500 ppm The TSCA regulates and the U.S EPA enforces the removal and 

disposal of all sources of PCBs containing 50 ppm or more .. Items containing PCBs below 50 ppm 

are classified by TSCA as non-PCB items and are not required to be removed from service 

4.5.1 Carve-Out I-B (Figure 3) 

PCBs - There are two PCB non-transformer items within Building 439 and a pad-mounted 

transfOimer (pCB T -67) at Building 439 all with less than 42 ppm PCB concentrations .. No evidence 

of a release has been identified for the transfOimer or equipment. There was one PCB nontransformer item within Building 651 with less than 1.0 ppm PCB concentration. This PCB nontransformer item was removed when the building was demolished (DISC 2003e and EPA 2003a) 

4.5.2 Carve-Out I-M (Figure 10) 

PCBs -TransfOimers PCB TlO, TIl, and Tl2 were within CO I-M No evidence ofa release was 

identified at these transformers (DTSC 2003e and EPA 2003a) 

4.5.3 Carve-Out III-D (Figure 15) 

PCBs - Non-transformer PCB items PCB 176 and PCB 178, with 3.8 ppm, were removed during 

tank removal activities in 1995 (DISC 2003e and EPA 2003a). 

9 
January 2009 

4.6 RADON 

Final Finding of Suitability to Transfer#4 

Fonner MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

Radon is a naturally OCCUlting, colorless, and odorless radioactive gas that is ptoduced by radioactive 

decay of naturally occuning manium. Uranium decays to radium, of which radon gas is a byproduct Radon is found in high concentration in rocks containing manium such as granite, shale, 

phosphate, and pitchblende Atmospheric radon is diluted to insignificant concentrations Radon that 

is present in the soil, however, can enter a building thruugh small spaces and openings, accmnulating 

in enclosed areas such as basements Ihe cancer risk caused by exposure thruugh the inhalation of 

radon is a topic of concern 

DoD policy is to disclose available and relevant radon assessment data pertaining to BRAC property 

being leased or transferred for inclusion in property lease/transfer documents. However, there is 

cmrently no federal requirement to perform follow-on radon assessment or mitigation in federal 

buildings, including those to be transferred to the public or private sector .. 

A radon survey was conducted at former MCAS EI Ioto in 1991. In accordance with DoD guidance 

(DoD 1994a), radon screening results were based upon a representative sampling of buildings .. Ihe 

buildings surveyed included the station hospital (Building 431), the childcare center (Building 656), 

and approximately 185 locations in the family housing areas .. The results indicated that none of the 

buildings or housing units exceeded the radon thr·eshold value of 4 picocur ies per liter (pCi/I). 

Therefore, no mitigative action or further testing was recommended (JEG 1995). Based on these 

sampling results, it is anticipated that radon levels in other buildings at former MCAS EI Ioro should 

not be significantly different from those surveyed (levels should not exceed 4 pCi/l) (USMC/SWDN 

1999) 

4.7 SCHOOL SITE CONSIDERATIONS 

If, subsequent to transfer, any portions of the property found suitable to transfer by this FOSI is 

considered for the proposed acquisition andlor construction of school properties using state funding, 

a separate environmental review process in compliance with the California Education Code section 

17210 et seq .. will need to be conducted by the transferee and approved by DISC (Brownfields and 

Environmental Restoration Ptogram) Ihe California Education Code requires that a comprehensive 

evaluation of natural and manmade hazardous materials be conducted for school properties Ihis 

comprehensive evaluation requires additional investigation of hazardous materials outside the scope 

of CERCLA hazardous substances Ihis additional evaluation includes legally applied pesticides and 

herbicides, imported fill materials, natmally occurring hazardous substances such as heavy metals 

(e.g., chromium, mercury, nickel), metalloids (e.g .. , arsenic, selenium), gases (e.g., methane, 

hydrogen sulfide), radioactive elements (e .. g., radon gas), and natmally-occuning petrulemn deposits 

The evaluation also includes ACM and LBP at concentrations that tall outside the scope of 

CERCLA. Any requirements associated with the evaluation of any property for compliance with the 

California Education Code are the sole responsibility of the transferee .. 

5.. SUMMARY OF RESTRICTIONS 

Ihis section summarizes the restrictions associated with each of the CO areas proposed for transfer 

related to petroleum products and derivatives, ACM, and LBP Ihese restrictions on certain activities 

ensure that post-transfer use of the CO areas is consistent with protection of human health and the 

environment, and are environmentally suitable for tr ansfer . 

5.1 PETROLEUM PRODUCTS AND DERIVATIVES 

Ihe following sites have on-going corrective action requirements which will remain the 

responsibility of the DON after transfer. Additional details are provided in I able 5 

10 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

5.1.1 Carve-Out 1-8 (Figure 3) 

Finding of Suitability 

to Transfer 

USIs - USIs 651-1, 651-2, 651-3, and 651-4 are pmt of an ongoing petroleum cOIIective action 

related to groundwater. Iherefore, land use restrictions for the petroleum plume mea will be 

incOlporated into the Quitclaim Deed and implemented in order to limit the exposure to petroleum 

and its derivatives and to maintain the integrity of cOllective actions 

In order to protect present or future human health, safety, and the environment, the transferee shall 

refrain from the following acts within the m·ea designated On Figure 3 without prior review and 

written approval from the DON and RWQCB until cleanup objectives have been achieved: 

• Any activity that causes or facilitates the movement of known contruninated groundwater. 

• Alteration, disturbance, or removal of any component of a COllective action, including but 

not limited to, groundwater extraction, injection, and monitOIing wells (I able 7) and 

associated piping and equipment; 01 associated utilities; 

• Ext! action of groundwater and installation of new groundwater wells; and 

• Removal of Or drunage to secUlity features (fOi example, locks on monitOIing wells, sUlvey 

monuments, fencing, signs, OI monitOi ing equipment and associated pipelines and 

appUltenances) 

Ihese restrictions may be released when the R WQCB has concUlred that the cleanup objectives have 

been achieved and a release document is recorded with the county clerk 

5.1.2 Carve-Out I-M (Figure 10) 

USI - USI 65A has not received regulatOlY conCUllence. Iherefore, land use restrictions for soil 

contamination will be incOlporated into the Quitclaim Deed and implemented in order to limit the 

exposure to petroleum and its derivatives and to maintain the integrity of cOirective actions until 

corrective action is complete and federal and state cleanup levels have been met 

In order to protect present OJ future human health, safety, and the environment, the transferee shall 

refiain from the following acts within the area designated in Figure 10 without prior review and 

written approval from the DON and RWQCB until cleanup objectives have been achieved: 

• "Land distUlbing activity" which includes but is not limited to: 

o Excavation of soil; 

o Any activity that involves movement of soil to the sUlface of the land hom below the 

surface of the land; and 

o Any other activity that causes or facilitates the movement of known contruninated 

groundwater 

• Alteration, distUlbance, OJ removal of any component of a corrective action, including but 

not limited to, groundwater extraction, injection, and monitOIing wells and associated piping 

and equipment; or associated utilities; 

• Extraction of groundwater and installation of new groundwater wells; and 

• Removal of or damage to secUlity features (fOi example, locks on monitOIing wells, sUlvey 

monuments, fencing, signs, or monitoring equipment and associated pipelines and 

appUltenances) . 

11 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

These restrictions may be released when the RWQCB has concUIred that the cleanup objectives have 

been achieved and a release document is recorded with the County Clerk 

5.2 ASBESTOS-CONTAINING MATERIAL 

5.2.1 Carve-Out I-B (Figure 3) 

Building 439 - This building is classified as containing fiiable, accessible, and damaged (FAD) 

ACM, Except for short-term and emergency maintenance, access, use, or occupancy is prohibited 

pending either (I) completion of ACM smveys and completion of any necessary ACM abatement, or 

(2) demolition by the transferee, in accordance with all applicable local, state, and federal laws and 

other requirements relating to asbestos or ACM. Pending completion of abatement or demolition, the 

transferee shall manage the ACM in accordance with all such applicable local, state, and federal laws 

and requirements, 

5.2.2 Carve-Out II-I (Figure 13) 

Building 392 - This building is classified as containing FAD ACM Except for short-term and 

emergency maintenance, access, use, or occupancy is prohibited pending either (1) completion of 

ACM smveys and completion of any necessary ACM abatement, or (2) demolition by the transferee, 

in accordance with all applicable local, state, and federal laws and other requirements relating to 

asbestos or ACM Pending completion of abatement or demolition, the transferee shall manage the 

ACM in accordance with all such applicable local, state, and federal laws and requirements., 

Buildings 308 and 764 - These buildings require an ACM Smvey, Buildings require a smvey if they 

have never been smveyed for ACM; non-FAD ACM was detected in a smvey that was conducted 

prior to but not since 1997 (i e, not within the last 3 years of station operation) or they were 

sUIveyed for FAD ACM only and, therefore, the presence of non-FAD ACM is unknown. Except for 

short-term and emergency maintenance, access, use, or occupancy is prohibited pending either 

(1) completion of ACM sUIveys and completion of any necessary ACM abatement, or (2) demolition 

by the transferee, in accordance with all applicable local, state, and federal laws and other 

requirements relating to asbestos or ACM, Pending completion of abatement or demolition, the 

transferee shall manage the ACM in accordance with all such applicable local, state, and federal laws 

and requirements, 

5.2.3 Carve-Out II-P (Figure 14) 

Building 637 - This building requires an ACM Smvey. Buildings require a smvey if they have never 

been smveyed for ACM; non-FAD ACM was detected in a sUIvey that was conducted prior to but 

not since 1997 (i .e, not within the last 3 years of station operation) or they were sUlveyed for FAD 

ACM only and, therefore, the presence ofnon-FAD ACM is unknown. Except for short-term and 

emer gency maintenance, access, use, or occupancy is prohibited pending either (1) completion of 

ACM surveys and completion of any necessary ACM abatement, or (2) demolition by the transferee, 

in accordance with all applicable local, state, and federal laws and other requiI'ements relating to 

asbestos or ACM Pending completion of abatement or demolition, the transferee shall manage the 

ACM in accordance with all such applicable local, state, and federal laws and requirements., 

5.3 LEAD-BASED PAINT 

In its use and occupancy of the property, including but not limited to demolition of buildings, 

stlllctmes, and facilities, and identification and/or evaluation of any LBP hazards, the transferee shall 

be responsible for managing LBP and LBP hazards in accordance with applicable local, state, and 

federal laws, and other requirements relating to LBP and LBP hazards 

12 
January 2009 

Final Finding of Suitability to Transfer#4 

Fonner MCAS EI Toro, Califomia 

5.3.1 Carve-Out 1-8 (Figure 3) 

Finding of Suitability 

to Transfer 

Building 439 (1959) - Nonresidential buildings constmcted pliOl to 1978 may not be used for 

residential use or child-occupied buildings unless the transferee peifc>lms any necessruy evaluation(s) 

and abatement in accordance with all local, state, and federal laws and other applicable requirements, 

5.3.2 Carve-Out I-G (Figure 5) 

Building 7 (1943) - Nonresidential buildings constructed prior to 1978 may not be used fOl 

residential use or child-occupied buildings unless the transferee perfOlms any necessruy evaluation(s) 

and abatement in accordance with all local, state, and federal laws and other applicable requirements, 

5.3.3 Carve-Out II-I (Figure 13) 

Building 308 (1944), Building 392 (1955) - Nonresidential buildings constmcted priOl to 1978 may 

not be used for residential use or child-occupied buildings unless the transferee peiforms any 

necessruy evaluation(s) and abatement in accordance with all local, state, and federal laws and other 

applicable requirements, 

5.3.4 Carve-Out II-P (Figure 14) 

Building 637 «1973) - Nonresidential buildings constmcted prior to 1978 may not be used for 

residential use or child-occupied buildings unless the transferee peiforms any necessary evaluation(s) 

and abatement in accordance with all local, state, and federal laws and other applicable requirements 

5.3.5 Carve-Out 111-0 (Figure 15) 

Building 26 (1943) - Nomesidential buildings constructed prior to 1978 may not be used for 

residential use or child-occupied buildings unless the transferee performs any necessruy evaluation(s) 

and abatement in accordance with all local, state, and federal laws and other applicable requirements, 

6" ADJACENT PROPERTIES 

Nine of the 13 COs in the FOST rue sutlOunded by plOperty that was transfened in the initial MCAS 

EI10ro FOST ofJuly 2004 (DON 2004a) As the land areas of the erulier FOST were found suitable 

for transfer, they pose no negative effects on the COs proposed for transfer in this FOST, The four 

COs in this FOST that are adjacent to COs requiring additional remediation are described below 

6.1 CARVE-OUT 1-8 (FIGURE 3) 

This CO acijoins CO I-Q which contains an abandoned petroleum USL UST 367 on adjacent CO I-Q 

is a 2,500-gallon diesel tank that was abandoned in Febmruy 1994 .. 1he soil boring analytical data 

indicates that the contrunination is confined to the ruea immediately acijacent to the US T site which is 

approximately 320 feet nom the edge of CO I-B and there is no groundwater contamination at UST 

367; therefore, there is no possibility of future contrunination to CO I-B nom the abandoned UST 

367., 

6.2 CARVE-OUT loG (FIGURE 5) 

This CO adjoins CO I-F which contains groundwater that contains VOC contruninants, A 300-foot 

buffer zone ruound the maximum predicted extent of the groundwater plume, as indicated by the 

groundwater model, is designed to prevent construction of groundwater extraction wells that could 

cause the plume to migrate and impact the cleanup remedy, Because CO I-G is outside the 300-foot 

buffer zone and remedial actions me underway for the Site 16 plume, no impact to CO I-G is 

anticipated, 

13 
January 2009 

Final Finding of Suitability to Transfer#4 

Former MCAS EI Toro, California 

6.3 CARVE-OUT !I-G (FIGURE 12) 

Finding of Suitability 

to Transfer 

Ihis CO borders COs II-H and II-M.. CO II-H is a former landfill site that was closed in 1955 .. Due to 

the extent of the landfill buffer zone and the fact that the landfill has been closed for an extended 

peIiod of time prior to the remediation of CO II-G, there is no danger of landfill contamination 

spreading to CO II-G, or any other previously transfell'ed property .. CO-II-M includes a former skeet 

range with an extensive buffer zone Due to the fact that the skeet range was closed prior to the 

remediation of CO II-G, there is no danger of post-transfer contamination to CO II-G. 

6.4 CARVE-OUT 111-0 (FIGURE 15) 

Ihis CO has a common border to the south with CO III-B Ihe primary contaminant of CO III-B is a 

groundwater plume that is presently under remediation as IRP Site 24 When the Final ROD for 

OU-I Site 18 and OU-2A Site 24 was completed in 2002 (DON 2002), the updated plume and 500 

foot buffer zone were no longer located beneath CO III-D. Consequently, groundwater restrictions 

due to the Site 24 VOC plume are not applicable to CO III-D. Also, within CO III-B is former LOC 

IAA 765 immediately adjacent to CO III-D that received regulatory NF A concmrence on November 

17, 1998 (DISC 1998) 

7" COVENANTS 

Ihe deed for transfer of any property on which "any hazardous substance was stored for one year or 

more, [or] known to have been released, or disposed. "as a result of former activities conducted by 

the US, will include a covenant made pursuant to CERCLA Section 120(h)(3)(A)(ii)(I) and (II) 

Ihe covenant will warrant "that all remedial action necessary to protect human health and the 

environment with respect to any such substances remaining on the property has been taken before the 

date of such transfer" and "that any additional remedial action found to be necessary after the date of 

such transfer shall be conducted by the U.S" Ihis covenant will not apply to any remedial action 

required on COs that is the result of an act or omission of the transferee that causes a new release of 

hazardous substances COs I-L, I-M, I-P, and II-P were only contaminated by petroleum or its 

derivatives, therefore, COs I-L, I-M, I-P, and II-P shall be conveyed "as is" without a CERCLA 

covenant 

8. ACCESS CLAUSE 

Ihe deed will reserve and the transferee shall grant to the U.S. (DON and U.S .. EPA) access to COs 

I-B, I-E, I-G, I-H, I-I, I-I, II-G, II-I, and III-D pmsuant to CERCLA Section 120(h) (3) (A) (iii) 

DISC, RWQCB, US. EPA and their successors and assigns shall also be granted access to the COs 

in any case in which remedial action or cOlI'ective action is found to be necessary after the date of 

transfer .. In addition, the deed will provide for a right of access for the U S. and RWQCB to traverse 

property owned by the transferee to gain access to COs I-B and I-M for the on-going petroleum 

corrective actions 

14 
Janual}' 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, Califomia 

9. FINDING OF SUITABILITY TO TRANSFER 

Finding of Suftability 

to Transfer 

Based on the information contained in this F OS I and the notices, restrictions, and covenants that 

will be contained in the deed, COs I-B, I-E, I-G, I-H, I-I, I-J, I-L, I-M, I-P, II-G, II-I, II-P, and III-D 

at former MCAS El Ioro are suitable for transfer, 

Date: Signature: 

Lama Duchnak 

Director BRAe PMO West 

15 

January 2009 

10.. REFERENCES 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

Califomia Deprutment of Health Services. 2006 UnreslJicted Release of Former Site of Radium 

Plaque Adaptometer Building at MCAS EI Tor 0 .. June 19 .. 

Califomia Regional Water Quality Control Borud (RWQCB). 1995 No Further Action Concurrence 

Letterfor Underground Storage Tank (USI) 443. December 12. 

1995a. No Flllther Action Concurrence Letter for Undergrmmd Storage Tank (UST) 75A. 

December 12 

1996 No Further Action Concurrence Letter for Underground Storage Tank (USI) 75B 

March 12 

1999 .. No Further Action Concunence Letterfor Underground Storage Tank (UST) 47A and 

47B August 2 

___ . 2000. No Further Action Concurrence Letter for Aboveground Storage Tank (ASI) 439 

August 28. 

___ . 2000a. No Further Action Concurrence Letter for Aboveground Storage Tank (ASI) 651 

August 28. 

2000b No Further Action Concurrence Letter for Oil Water Separator (OWS) 651-8 

September 28 

2000c. No Further Action Concurrence Letter for Vadose Zone Soil oj Undergr'ound 

Storage Tanks (USTs) 176 to 183 and T-5 oj Tank Farm 2. March 27.. 

2002 .. No Further Action Concurrence Letter for Aboveground Storage Tank (AST) 47 

September 5 

__ -=' 2003 No Further Action Concurrence Letter for RCRA Facility Assessment (RF A) Site 213 

Febmary 20 

__ -::' 2004. No Flather Action Concurrence Letter for Former Undergr'Olmd Storage Tank (USI) 

Site 392D. June 7 

__ -::.2006 No Further Action Concurrence Letter for Former Underground Storage Tank (UST) 

Site 308 May I. 

2006a No Further Action Concurrence Letter for Former Underground Storage Tank 

(UST) Site 764A and Oil Water Separator (OWS) Site 764B May 16 

2007. No Further Action Concurrence Letter for Aerial Photograph Anomaly 118 

January 16. 

__ -::' 2007a. No Further Action Concurrence Letterfor Groundwater beneath Former Tank Farm 

2 of Underground Storage Tanks (USTs) 176 to 183 and I~5 November 8 

__ -::' 2008 No Further Action Concurrence Letter for Undergr'Olmd Storage Tank (USI) 75C 

January 15. 

16 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

2008a No Further Action Concurrence Letter for Former Underground Storage Tank 

(UST) Site 637-1, 637-2, and 637-3. March 12 .. 

__ -::. 2008b. No Further Action Determination for the Unsaturated Soils (Vadose Zone) at the 

Underground Storage Tank Group 651 Release Site, Former Marine Corps Air Station, El 

Toro, November 4 

___ 2008c No Further Action Concurrence Letter for Underground Storage Tank (USI) 254. 

December 2 .. 

Califomia Department of Toxic Substances Control (DISC). 1996. Letter. Acceptance of Closure 

Certification Hazardous Waste Storage Area (Building 673-B) Marine Corps Air Station 

El Toro, Santa Ana, California (EPA !DNo. CA 6170023208). March. 

1996a No Further Action Concurrence Letter for RCRA Facility Assessment Site 164. 

July 23. 

1998 No Further Action Concurrence Letter for Temporary Accumulation Area 765 

November 17. 

___ .2003. Draft Environmental Baseline SUIvey for approval of No Further Action Concurrence 

Letter for Potential Release Location 651.. April 11. 

___ . 2003a .. No Further Action Concurrence Letter for Temporary Accumulation Area 651A 

Octobet 15. 

2003b No Further Action Concurrence Letter for Temporary Accumulation Area 7B. 

March 4 

2003c No Further Action Concurrence Letter for RCRA Facility Assessment Site 213. 

March 3. 

__ -:: 2003d. No Further Action Concurrence Letter for Temporary Accumulation Area 392A and 

392B. March 10. 

___ 2003e .. Concurrence with the Final Environmental Baseline Surv~y dated September 25. 

__ -:-.. 2004. No Further Investigation Concurrence Letter for Potential Release Location 443 

Mar·ch23 

2005 .. No Further Investigation Concurrence Letter for Potential Release Location 51 

November 2 

2005a. No Further Investigation Concurrence Letter for Potential Release Location 47 

July 13. 

__ -::. 2005b No htrther Investigation Concurrence Letter for Potential Release Location 22 

July 13 

2006. No Further Action Concurrence Letter for Temporary Accumulation Area 651B 

June 22 

17 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

2006a. No Further Action Concurrence Letter for Tempormy Accumulation A,ea 2 

September 6 .. 

2006b No Further Action Concunence Letter for Tempormy Accumulation Alea 7. 

March 16 

2006c .. No Further Action Concunence Letter for Tempormy Accumulation Area 51 

August 14. 

2006d. No Further Action Concurrence Lettel for Temporary Accumulation A,ea 22 

July 31 

___ . 2006e No Further Action Concurrence Letter for Underground Storage Tank 764A10il 

Water Separator764B. July 31. 

__ -::-.2007 No Further Action Concurrence Letter for Aerial Photograph Anomaly (APHO) 118. 

Malch25 

__ --,:. 2008.. No F,"ther Investigation Concurrence with Final Summary Reportfor Group IV 

Potential Release Locations (PRLs), 46, 133, 312, 439, 457, and 634. August 21. 

County of OJange Health Care Agency (OCHCA). 1996 Completion oj Tank Removal Project and 

No Further Action Requite Letter for Underground Storage Tank (USI) 439A and 

439BDecember 9. 

1996a. Completion oj Tank Removal Ploject and No Further Action Require Letter for 

Underground Storage Tank (USI) 693A and 693B. November 7 

1996b Completion oj Tank Removal Ploject and No Further Action Require Letter for 

Undelground Storage Tank (USI) 46 November 12 

1996c. Completion oj Tank Removal Project and No Further Action Require Letter for 

Underground Storage Tank (USI) 392A December 9 

1997 Completion of Tank Removal Project and No Furthel Action Require Letter for 

Underground Storage Tank (UST) 651-5, 651-6, and 651-7 July II 

1997a. Completion of Tank Removal Project and No Further Action Require Letter for 

Underground Storage Tank (USI) 392B March 14 

1997b. Completion of Tank Removal Ploject and No Further Action Require Letter for 

Underground Storage Tank (USI) 392C July II .. 

1999. Completion oj Tank Removal Ploject and No F,"ther Action Require Letter for 

Underground Storage Tank (USI) 392E and UST392F December 9. 

2004. Completion oj Tank Removal Project and No Further Action Require Letter for 

Underground Storage Tank (USI) 75D. May 25 

Department of Defense (000). See United States Department of DefEmse 

Department of the Navy (DON). See u.s .. Department ofthe Navy. 

18 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

Ealth Tech. 2003 .. Final Environmental Baseline Survey, Fonner Maline COIpS Air Station, EI Toro, 

Califomia. September 

___ . 2005 .. SummalY RepOlt for GlOUp I Potential Release Locations, Environmental Baseline 

Survey, Former Maline COlP" Air Station, El Tow, California. February. 

---. 2005a .. SummalY RepOlt fm Group II Potential Release Locations, Environmental Baseline 

Survey, Former Maline COlpS Air Station, El Toro, California MaI·ch. 

---.. 2008 .. Draft SummalY RepOlt fm Group IV Potential Release Locations, Environmental 

Baseline Survey, Former Marine COlpS Air Station, El TOlO, California March. 

Intemational Technology (II) COIporation, 1989. Asbestos Survey and Assessment, MCAS, El 1010 

March 

Jacobs Engineering Group (JEG) 1993. Maline COIpS Air Station EI Toro, EI TOIO, Califomia, 

Installation Restoration ProgJam, Resource Conservation and Recovery Act (RCRA) Facility 

Assessment RepOit July. 

1995. Maline Corps Air Station El Taro, El 10ro, California, Installation Restmation 

PlOgfam, Final Environmental Baseline Survey RepOlt. April 

1995a. Maline ColpS Air Station El Tor 0, EI Tor 0, California, Installation Restofation 

Program Community Environmental Response Facilitation Act Confirmation Sampling 

Program Technical Memorandum .. March 

Kennedy/Jenks Consultants 1992. Inventory of PCB Items and Equipment at Marine ColpS Air 

Station, El Toro November. 

Marine COIpS Air Station (MCAS) EI 1010.. 1996. Marine Corps Air Station El 10ro, Wetlands and 

Waters oj the United States August 

Radian 1996 .. Final AB 2588 Air Taxies "Hot Spots" 1995 Inventory Reportfor Maline ColpS Air 

Station El Toro, California, SCAQMD ID No, 6281. May. 

US. Depaltment of Defense (DoD). 1994. Department of Defense Policy on the Environmental 

Review Process to Reach a Finding of Suitability to Transfer for Property Where Release 01 

Disposal Has OccUlred 

1994a. Asbestos, Lead Paint, and Radon Policies at BRAC Properties MemOlandum for 

Assistant SecretalY of the Army (Installations, Logistics, and Environment); Assistant 

SecretalY of the Air Force (Manpower, Reserve Affairs, Installations, and Environment); and 

Director, Defense Logistics Agency From Principle Assistant Deputy Under SecretalY of 

Defense (Environmental Security). October. 

1995 Marine COIpS Air Station EI T 010, EI 1010, Califomia, Installation RestOlation 

PrograIll, Final Environmental Baseline Survey RepOlt April. 

1997 Base Redevelopment and Implementation Manual Office of the Deputy Under 

SecretalY of Defense (Industrial Affairs and Installations) December .. 

19 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

1997a .. Record of Decision for Installation Restoration Program Site 13 of Maline Corps 

Air Station El Toro, Califomia. September 30 

2002 .. Record oj Decision, Disposal and Reuse oj Maline Corps Air Station El Taro, 

Califomia ApriL 

___ 2006. Base Redevelopment and Realignment Manual. Office ofthe Deputy Under Secretary 

of Defense (Installations and EnviIOnment).. March. 

u.S. Department of the Navy (DON) 1989 .. Memorandum for IJ Zagrobelny, Commander, Naval 

Facilities Engineering Command, referencing U.S EPA memorandum on disposal 

requirements for PCB small capacitors .. Subject: Disposal of Fluorescent Light Ballasts 

Containing PCBs. 

1990 .. Southwest Division, Naval Facilities Engineering Command (SWDN). Federal 

Facility Agreement between the U.s. Marine Corps, U.S EPA Region IX, California 

Department of Health Services, and State Water Resources Control Board 

___ .. 1997. FInal Record of De cis ion, Operable Units 2A and 3A, No Action Sites, Maline Corps 

Air Station El Toro, Califomia. Southwest Division, Naval Facilities Engineering Command, 

San Diego, California .. September 

___ .. 2002. Final Record oj Decision, Operable Unit 1, Site 18 - Regional Volatile Organic 

Compound Groundwater Plume, Operable Unit 2A, Site 24 - VOC Source Area, Former 

Maline Carps Air Station El Taro, California Southwest Division, Naval Facilities 

Engineering Command, San Diego, California June 

2004 Final Finding of Suitability to Lease, for Carve-Outs within Parcels I, II, and III, 

Former Marine Corps Air Station EI T oro, California. July 

__ -=: 2004a .. Final Finding of Suitability to Transfer (Parcel N and Portions of Parcels I, II, and 

III), Former Marine Corps Air Station EI Ioro, California. July. 

United States Environmental PIOtection Agency (U.s. EPA) Region IX 2003. Draft Environmental 

Baseline Survey (EBS) dated February 7, 2003, Iechnical Information Package of Potential 

Release Locations Investigation Results (March 20, 2003), and I echnical Sheets for Runways 

and Pesticide Mixing Area (April 3, 2003), Former MCAS EI Ioro, California April II. 

2003a Concurrence Letter for Final Environmental Baseline Survey (EBS) dated 

April 2003. September 25. 

___ .2005 .. Concurrence Letterfor Group II Potential Release Locations including 51 April 7.. 

___ . 2005a. Concurrence Letter for Group I Potential Release Locations including 47. Mar·ch 16 

__ -::. 2005b. Concunence Letter for Draft Final Radiological Release Reportfor Former Sites oj 

Radium Plaque Adaptometer Building and Air Craft Palts Yard September 12 

___ 2005c .. Concunence Letter for Group II Potential Release Locations including 22 April? 

2008. Concurrence Letter for Group IV Potential Release Locations including PRLs 46, 

133, 312, 439, 457, and 634. April 17 

20 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Finding of Suitability 

to Transfer 

United States Marine Corps (USMC)/Southwest Division, Naval Facilities Engineering Command 

(SWDIV). 1999. Base Realignment and Closure Cleanup Plan, Mmine Corps Air Station, 

El Taro, California. March 

__ -:-.. 2001 Base Realignment and Closure Business Plan, Mmine Corps Air Station, El Taro. 

Mar·ch. 

__ -:-. 2002. Base Realignment and Closure Business Plan, Marine Corps Air Station, El Taro. 

May 

__ -:; .. 2003. Base Realignment and Closure Business Plan, Mmine Corps Air Station, El Taro. 

January. 

21 
Tables 

January 2009 

Fina/ Finding of Suitability to Transfer #4 

Former MCAS E/ Toro, California 

Table 1: Buildings/Structures/Facilities 

Building/Structurel 

Carve Out! Facility Number Building/Structure/Facility NamelDescription 

Tab/e 1 

Year of 

Construction ! Square Feet 

______ 1-8 ~ ______ 439 ,IBranch Dental/Medical Clinic 1959 ! 70,167 ._____ ___ _ _ _ __________ " _______ .. __ ~__ _ _______ .. _ ....1..-__ "_. ______ _ 

_~ 

I-G 7 :,:Storage ' 1943 ' 10,370 ____ ... _.,l. _________ .. ___ _ ... , __ ._. _____ ._ .. __ " _____ . __ . ___ . ________ . ____ .. " .... _. __ ' ._ .. __ . _______ ; .. ___________ .. ____ . , II-I 308 iGround Support Equipment Storage 1944 720 

11-1 392 iAircraft Ground Support Equipment 1955 6,400 -----t-·-------·····-----i---···---··---.. ------·······-----...... -...... -.-----.---......... - ····--:··-···------------·-1·-··-·------···----

II-I 764 iVehicle Wash rack Utility Building 1984 228 -·---·-··--··,--+---··-··--··--~---··-i----·-·"-·-·----~--.--.... ---.. --.----." ... -... -.-------. -. "--... - .. -.-~ .---.. ~-----.. ---.. -.--..;--.--.- "-... -.. _-.-_ ... -

<1973 i Unknown ...... --_.-: .-.. --... --.... --_.-.-- -··1··- ... --.. _._-.-.---.--.- Il-P 637 !Exchange Gas Station 

---------"t-....... -------.---.. -.-.---f---.---.------~-".-.-.-.-----.---.. -.-.--.... -.--.--.-

III-D 26 iCommunications Shop 1943 6,240 

Note: Buildings/structures/facilities that have been demolished or removed are not shown 

< before 

Page 1 of 1 

January 2009 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California 

Table 2: Environmental Requirements and Notifications 

Applicable to Property 

Carve Out 

Environmental Factors Considered , 

i~i~i~i~i~i~i~i~iwII~ !, i':';· II~I ! II~P ! III~D 

Presence of Hazardous Substances (Notification) Y Y Y Y Y Y N Y N Y Y N Y 

CERCLA/RCRA (Response/Corrective Action) Y Y Y Y Y Y N Y N Y Y N Y 

Presence of Petroleum Products and Derivatives Y N N N Y N Y Y Y N Y Y Y 

USTIAST Storage Tanks (Closure/Removal) Y N N N Y N Y Y Y N Y Y Y 

Munitions and Explosives of Concern - Response Actions N N N N N N N N N N N N N 

Asbestos-Contamlng Matenal Y N N N N N N N N N Y Y N 

Lead-Based Paint (Non-Residential Buildings) Y N Y N N N N N N N Y Y Y 

Polychlorinated Biphenyls Y N N N N N N Y N N N N Y 

Radon YYYYYYYYY YYY Y 

School Site Considerations Y Y Y Y Y Y Y Y Y Y Y Y Y 

AST 

CERCLA 

N 

RCRA 

UST 

Y 

aboveground storage tank 

Comprehensive Environmental Response, Compensation, and Liability Act 

No 

Resource Conservation and Recovery Act 

::: underground storage tank 

Yes 

Page 1 of 1 

Table 2 

January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California Table 3 

Table 3: Potential Release Locations 

LOCID 

Carve-Out I-B 

PRL 439 

PRL443 

1---

Building 

Numberl 

Location Description 

Closure Report 

TitielDate 

NFl Letter 

AgencylDate 

439 Medical and Dental Draft Summary Report for EPA - 4/17/2008 

Demolished 

Facility Group IV PRLs by Earth DTSC _ 8/21/2008 

Silver Recovery Unit 

Tech (March 2008) 

Technical Memorandum 

SRU 2, 9/912002, Finai 

EBS, Sept. 2003, and 

Information Package 

Techmcal Memorandum 

for SRU 2, 211112004 

DTSC - 3/23/2004 

Notes 

NFl status identified in Draft Summary Report for Group IV PRLs 

(Earth Tech 2008) and EPA concurrence obtained. NFl Status 

identified in DTSC letter dated 8/21112008. 

PRL 443 is also known as SRU 2 associated with photograph 

developing equipment in former Building 443. Historical record 

search, visual inspection, and soil sampling was conducted from 

2002 to 2003. NFl status identified in DTSC letter dated 3/23/2004 

PRL 651 I Demolished Exchange Auto Repair Final EBS (Sept. 2003) by EPA - 4/24/2003 Facility contained hydraulic lifts, hydraulic hOIst pits, and an AST. I Station Earth Tech DTSC - 4/1112003 The building was used as an exchange selVlce station. A utility 

trench, floor drains and service sink, and parts dip tank were noted 

during the VSI. Sampling Investigation of this facility was conducted 

In 2003. Contaminant concentrations identified were below action 

levels. No further action is reqUired per DTSC letter dated 

4/11/2003. 

Carve-Out I-H 

PRL 51 

Carve-Out I-I 

PRL46 

PRL47 

Carve-Out I-J 

Demolished -,-- Automobile Summary Report for EPA - 4/07/2005-1

\ NFl status identified in Summary Report for Group II PRLs 

Organization Shop Group II PRLs by Earth DTSC - 11/02/2005 (Earth Tech 2005a) and regulatory concurrence obtained. All NFl 

Tech (March 2005a) actions completed. 

Demolished Reproduction Office Draft Summary Report for 

Group IV PRLs by Earth 

Tech (March 2008) 

EPA - 4/17/2008 

DTSC - 8/21/2008 

Demolished Paint and Dope Summary Report for EPA - 3/16/2005 

Shop/Paint Booth Group I PRLs by Earth DTSC -7/13/2005 

Tech (March 2005) ---

, 

NFl status identified in Draft Summary Report for Group IV PRLs 

(Earth Tech 2008) and EPA concurrence obtained. DTSC provided 

comments on PRL 46 in their Group IV PRLs comments letter dated 

4/30/2008. All NFl aclions completed. NFl Status identified in DTSC 

letier dated 8/21112008. 

NFl status identified in Summary Report for Group I PRLs 

(Earth Tech 2005) and regulatory concurrence obtained. All NFl 

actions completed. 

PRL 22 22 Electromcs & Summary Report for EPA - 4/7/2005 PRL 22 was evaluated within the Group I PRL Investigations. DTSC 

Communications Shop Group I PRLs by Earth DTSC -7/13/2005 and EPA concurred with the NFA recommendation for PRL 22 in 

Tech (March 2005) letters dated 7/1312005 and 4/712005, respectively. 

Page10f2 
January 2009 

AST 

DTSC 

EBS 

EPA = 

ID 

LOC 

NFl 

PRL = 

Aboveground Storage Tank 

Department of Toxic Substance Control 

Environmental Baseline Survey 

Unites States Environmental Protection Agency 

Identification 

Location of Concern 

No Further Investigation 

Potential Release Location 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Toro, Califomia 

SRU 

VSI 

Silver Recovery Unit 

Visual site inspection 

Page 2 012 

Table 3 
January 2009 

Table 4: Locations of Concern 

LOC 10 

Carve~Out I~B 

RFA 164 

Building 

Number! 

Location 

Demolished 

Description 

Vehicle Wash Rack 

651 

Final Finding of Su, Jty to Transfer #4 

Former MCAS EI Toro, Califomla 

Closure Report 

Titie/Date 

Final RCRA Facility 

Assessment (RFA) 

Report 7/1993 

and 

NFA Letter 

AgencylDate 

DTSC 7/23/1996 

Table 4 

Notes 

inactive vehicle wash rack. Site was identified in the RFA and has 

been investigated. DTSC concurred with NFA recommendation In a 

letter dated 7/23/1996. No further action required. 

............ ~ .•.•. ".-.'.-.-'."'.-.--... '.'.'.'.'.' .......... j ............•.•.•.•.•.•.•... 

Final Addendum to 

RFA Report 5/1996 

TAA651A Demolished < 90-Day 

Accumulation POint 

Summary Report for DTSC 10/15/2003 

Former TAA 651A 

10/15/2001 & 

Information 

Package on 

1n/2003 & 

10/8/2003 

TM 651A was a metal storage shed located northwest quadrant of 

the Station on the loading dock of Building 651. Sampling results 

below residential PRGs. DTSC concurred with NFA 

recommendation in a letter dated 10/15/2003. No further action 

required 

TAA651B Demolished < 90-Day Summary Report for 

FormerTAA651B 

DTSC 6/22/2006 Former accumulation area on asphalt-paved area adjacent to 

Building 651. TAA 651 B is located northwest quadrant of the 

Station. Sampling results below residential PRGs. DTSC concurred 

with NFA recommendation in a letter dated 6/2212006. No further 

action reqUired 

AST 439 

Accumulation Point 

i ! 

10/15/2001 & 

Information 

Package on 

61712006 ... 1... .......................• __ ._. ___ .• L .... _ ................................................................................................................................... . 

I 439 ! 500-Gallon Summary Report, RWQCB 8/28/2000 Horizontal tank; tank has been removed; no releases identified; NFA 

Propane Tank Former AST Sites deCISion date of 8/28/2000. No further action reqUired. 

245 & 439 7/512000 

AST 651 Demolished 1,OOO-Gallon Summary Report, RWQCB 8/28/2000 Horizontal tank; tank formerly situated on west side of Building 651; 

Propane Tank former AST 651 tank has been removed; no releases identified; NFA decision date of 

7/19/1999 8/28/2000. No further action reqUired. 

UST 439A 439 5,OOO-Galion Fuel Tank Removal Field OCHCA 12/9/1996 Tank removed in 1993. Site closed by OCHCA in a letter dated 

Oil Tank Activities 12/9/1996. No further action reqUIred. 

9/30/1993 

_·'·"·"1"·"·'·"·"·"·"·"·" 

UST 439B 439 5,OOO-Galion Fuel Tank Removal Field OCHCA 12/9/1996 Removal completed 2128/1994. Site closed by OCHCA in a letter 

Oil Tank Activities dated 12/9/1996. No further action reqUired. 

7115/1993 

UST 443 Demolished 1,OOO-Galion Diesel Site Assessment RWQCB 12/1211995 Removal completed 212811994. Site closed by RWQCB in a letter 

Tank Report, UST 443 dated 12/12/1995. No further action required. 

911995 

Page 1 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

UST 651-1 

Building 

Numberl 

Location 

Demolished 

Description 

12,OOO-Galion 

Unieaded Fuel 

Tank 

Final Finding of Suitability to Transfer#4 

Fonner MCAS EI Taro, California Table 4 

Closure Report 

Titie/Date 

Summary Report, 

SVE Operations and 

Confirmation 

Sampling Activities 

2008 

NFA Letter 

AgencylDate 

RWQCB 11/4/2008 

T·· 

Notes 

Tank has been removed. Remediation conducted during 2000. 

Vadose zone SVE treatment has been completed and closure 

documentation submitted on 2/26/2008. MNA Evaluation and Longterm Monitoring Plan for groundwater submitted on 512912008. 

RWOCB concurred with NFA recommendation for vadose zone In a 

letter dated 11/4/2008. Navy will retam access to the site to allow tor 

ongOing sampling and maintenance of eXisting groundwater 

monitOring network. 

UST 651-2 Demolished 12,OOO-Galion Summary Report, RWQCB 11/4/2008 Tank has been removed. Remediation conducted during 2000. 

Vadose zone SVE treatment has been completed and closure 

documentation submitted on 212612008. MNA Evaluation and Longterm Monitoring Plan for groundwater submitted on 512912008. 

RWQCB concurred with NFA recommendation for vadose zone In a 

letter dated 1114/2008. Navy will retain access to the site to allow for 

ongoing sampling and maintenance of eXisting groundwater 

monitoring network. 

Unleaded Fuel SVE Operations and 

Tank Confirmation 

Sampling Activities 

2008 

UST 651-3 Demolished 12,OOO-Galion Summary Report, 

Unleaded Fuel SVE Operations and 

Tank Confirmation 

Sampling Activities 

2008 

1' .... 

RWQCB 11/4/2008 Tank has been removed. Remediation conducted dUring 2000. 

Vadose zone SVE treatment has been completed and closure 

documentation submitted on 2/26/2008. MNA Evaluation and Longterm Monitoring Plan for groundwater submitted on 5/29/2008. 

RWQCB concurred with NFA recommendation for vadose zone In a 

letter dated 11/4/2008. Navy will retain access to the site to allow for 

ongoing sampling and maintenance of eXisting groundwater 

monitoring network. 

UST 651-4 Demolished 12,OOO-Gallon Summary Report, RWQCB 11/4/2008 Tank has been removed. Remediation conducted dunng 2000. 

Unleaded Fuel SVE Operations and Vadose zone SVE treatment has been completed and closure 

Tank Confirmation documentation submitted on 2/26/2008. MNA Evaluation and LongSampling Activities term Monitoring Plan for groundwater submitted on 5/29/2008. 

2008 

RWOCB concurred with NFA recommendation for vadose zone In a 

letter dated 11/4/2008. Navy will retain access to the site to allow for 

ongOing sampling and maintenance of eXisting groundwater 

monitOring network. 

UST 651-5 Demolished 500-Gallon Waste Tank Removal and OCHCA 7/11/1997 Removal completed on 4/15/1997, Site closed by OCHCA in a letter 

Oil Tank Site Closure Report, dated 7/11/1997. No further action required. 

USTs 651-5,651-6, 

and 651-7 

6/12/1997 

Page 2 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

UST 651-6 

UST 651-7 

UST693A 

UST693B 

OWS 651-8 

SRU-1 

SRU-2 

PCB T67 

Building 

Numberl 

Location 

Demolished 

Demolished 

Demolished 

Demolished 

Demolished 

439 

Demolished 

439 

Description 

50QMGallon Motor 

Oil Tank 

500-Gallon Motor 

Oil Tank 

500-Gallon Diesel 

Tank 

500-Gallon Diesel 

Tank 

280-Gallon 

OilM/ater 

Separator 651 

Medical and Dental 

Facility 439 

Silver Recovery 

Unit 

PCBT67 

Final Finding of Su, '!/y to Transfer #4 

Former MCAS EI Taro, California 

Closure Report 

TillelDate 

Tank Removal and 

Site Closure Report, 

USTs 651-5,651-6, 

and 651-7 

6/12/1997 

Tank Removal and 

Site Closure Report, 

USTs 651-5,651-6, 

and 651-7 

6/12/1997 

Closure 

ReporUFinal Report, 

Tank 693A 

1/22/1992 

Closure 

Report/Final Report, 

Tank 693B 

1/22/1992 

Site Assessment 

Report, OWS Site 

651-8 

3/12/1999 

Draft Summary 

Report for Group IV 

PRLs March 2008 

Technical 

Memorandum SRU 

2, September 9, 

2002, Final EBS, 

Sept. 2003, and 

Information 

Package Technical 

Memorandum for 

SRU 2, 2111/2004 

Final EBS, Sept. 

2003 

NFA Letter 

Agency/Date 

OCHCA 7/11/1997 

OCHCA 7/11/1997 

OCHCA 11n/1996 

OCHCA 11/7/1996 

RWQCB 9/28/2000 

EPA 4/17/2008 

DTSC 8/21/2008 

DTSC 3/23/2004 

DTSC 9/25/2003 

EPA 9/25/2003 

Page 3 of 15 

Table 4 

Notes 

Removal completed on 4/15/1997. Site closed by OCHCA in a lelter 

dated 7/11/1997. No further action reqUired. 

Removal completed on 4/18/1997. Site closed by OCHCA in a letter 

dated 7/11/1997. No further action required. 

Tank has been removed. Site closed by OCHCA In a letter dated 

11/7/1996. No further action required. 

Tank has been removed. No evidence of a release was identified. 

Site closed by OCHCA In a letter dated 11/7/1996. No further action 

required. 

OWS was closed in place. OWS was not associated with a UST. 

Site was investigated, and no significant soil contamination was 

identified at this site based on the results of soil sampling. Site 

closed by RWQCB in a letter dated 9/28/2000. No further aclion 

required. 

SRU 1 was further Investigated as PRL 439. NFl Status identified in 

Draft Summary Report for Group IV PRLs and EPA concurrence 

obtained, NFl Status identified in DTSC letter dated 8/21112008. 

SRU 2 associated with photograph developing eqUipment in Building 

443. Historical record search, visual inspection, and soil sampling 

was conducted from 2002 to 2003 SRU 2 was further evaluated as 

PRL 443. NFl Status identified in DTSC letter dated 3/23/2004 

Removed. 1994 field survey Indicates no evidence of release. No 

PCB releases identified through the records search or VSls 

conducted for the 2003 EBS. 
January 2009 

Table 4: Locations of Concern 

LOCID 

RAD 

Carve-Out I-E 

TAA2 

Carve-Out I-G 

TAA 7 

Building 

Number! 

Location 

Unknown 

Demolished 

7 

Description 

Suspected Former 

Radium Plaque 

Adaptometer 

Building was 

identified on a 1944 

drawing as being 

situated on "e" 

Street, 

approximately two 

blocks north of the 

Trabuco Road 

Station Gate. 

< 90-Day 

Accumulation 

POlnUHazardous 

Materials Storage 

< 90-Day 

Accumulation Point 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Toro, California Table 4 

Closure Report 

Title/Date 

Final Radiological 

Reiease Report 

RAD ADAPT Bldg. 

June 2006 

Closure Report For 

Temporary 

Accumulation Area 

Site 2, Former 

Marine Corps Air 

Station, EI Taro, 

Irvine, California 

712006. 

NFA Letter 

Agency/Date 

CDHS 6/19/2006 

EPA 9/1212005 

DTSC 9/6/2006 

Summary Report for DTSC 3/16/2006 

FormerTM 7 

11/30/2005 

Page 4 of 15 

Notes 

i Building may have been part of a dispensary and would have been 

used for testing the mght vision of personnel. The only radioactive 

equipment that would have been used within the facility was a metal 

disc coated with radium/phosphor compound encapsulated in 

transparent plastic. Night vision testing was discontinued in 1951. 

Building may never have been constructed because there was no 

building number assigned to the building, no construction draWings, 

and no evidence of a building (Le., foundation, disturbed soil, etc.). 

Although, it could not be determined whether the building was ever 

constructed at former MCAS EI Toro, the 2000 HRA recommended 

further radiological investigation for the area associated with the 

footprint of this suspected building. During the year 2000, a 

stationwide HRA was conducted. The HRA recommended further 

radiological investigation for the Suspected Former Radium Plaque 

Adaptometer Building prior to final disposition. A radiologIcal survey 

was completed in 2001 and the results were presented in a Final 

Radiological Release Report dated June 2006. CDHS agreed with 

the findings of the report and granted NFA including unrestricted 

release on 6/19/2006. 

FormerTM Site 2 consisted of two units: Unit 1 was approximately 

150 feet long by 100 feet wide and was located southwest of 

Building 2; Unit 2 was approximately 100 feet wide by 100 feet wide 

and was located northeast of Building 2. Visual inspections were 

conducted and soil samples were collected from eight locations at 

Former TM Site 2 during 2005. A closure report with a screening 

risk evaluation was completed in 2006. DTSC concurred with NFA. 

No further action required. 

FormerTAA 7 was located northeast of Building 7 near the edge of 

the aircraft parking apron. The site was apprOXimately 10 feet wide 

by 20 feet long, and paint storage lockers were preViously located 

on the site. Soil samples were collected from bOrings and Visual 

Inspections were conducted at Former TAA 7 during 1995 and 

dUring 2005. A Summary Report with a screening risk evaluation 

was submitted in 2005. DTSC concurred with no further action In 

theIr letter dated 3/16/2006. No further action reqUired. 
January 2009 

Table 4: Locations of Concern 

LOCID 

TAA 7B 

Carve-Out I-H 

Building 

Number/ 

Location 

7 

Description 

< 90-Day 

Accumulation Pomt 

Final Finding of Su" dy to Transfer #4 

Fonner MCAS EI Taro, CalifornIa Table 4 

Closure Report 

Title/Date 

Summary Report, 

TAA 78 

7/17/2002 

NFA Leiter 

AgencylDate 

DTSC 3/412003 

Notes 

j TM 76 was located approximately 100 feet southwest of Building 7. 

Drums were stored at the site from approximately 1992 through 

1996. HistOrical records were reviewed, visual inspections were 

conducted, and the findings were presented in a Summary Report 

dated 2002. No further action IS required. 

TAA51 Demolished < 90-Day Closure Report DTSC 8/1412006l SWMUlAOC 33, Former TAA 51 is localed Northeast corner Of 

Carve-Out I-I 

AST47 Demolished 

i-- " ............................... . 

UST46 . Demolished 

Accumulation Pomt FromerTAA 51 i Building 51. Soil sampling was performed A Summary Report with a 

25-Gallon Diesel 

Tank 

screemng risk evaluation was submitted in 2006. DTSC concurred 

July 2006 with no further action status for TAA 51 in their letter dated 

8/14/2006. No further action required. 

Information RWQCB 9/5/2002 Diesel dry tank for boilers, Tank was closed in place, RWQCB 

Package, AST 47 concurred with NFA in a letter dated 9/5/2002. No further action 

5/1/2002 required, 

500-Gallon Diesei Closure OCHCA 11/12/1996 Removai completed on 2/6/1992, Site closed by OCHCA in a letter 

Tank Report/Final Report dated 11/12/1996, No further action required, 

Tank 461217/1992 

UST 47A Demolished 1,500-Gallon Diesel Tank Removal and RWQCB 8/2/1999 Removal completed on 4/10/1997, Sile closed by RWQCB in a letter 

Tank Site Closure Report, dated 8/2/99. No further action required. 

UST 47A and 47B 

5/18/1998 

UST 478 Demolished 1 ,500-Gallon Diesel Tank Removal and RWQCB 8/2/1999 Removal completed on 4/10/1997. Site closed by RWQCB in a letter 

SRU 3A Demolished 

Tank Site Closure Report, dated 8/2/1999. No further action reqUired. 

UST 47A and 478 

5/18/1998 

Reproduction Draft Summary EPA 4/17/2008 

Office Report for Group IV DTSC 8/21/2008 

PRLs March 2008 

Page 5 of 15 

SRU 3A was further Investigated and sampled as PRL 46. NFl 

status identified in Draft Summary Report for Group IV PRLs and 

EPA concurrence obtained for NFL NFl Status identified in DTSC 

letter dated 8/21/2008, 
January 2009 

Table 4: Locations of Concern 

Building 

Numberl 

LOCID Location Description 

Carve-Out I-J 

TAA22 Demolished < gO-Day 

Accumulation POint 

Carve-Out l-L 

UST254 Demolished 1,400-Gallon Fuel 

Oil Tank 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California Table 4 

Closure Report NFA Letter 

Title/Date Agency/Date Notes 

Closure Report, DTSC 7/31/2006 FormerTAA 22 included two units, each with a concrete pad, sump, 

Former Temporary and canopy; each unit was approximately 35 feet tong and 15 feet 

Accumulation Area i wide. TAA 22 was located east of Building 22. A visual inspection 

22 i was conducted, soil samples were collected from bOrings during 

11/4/2003, 1 2003, and a closure report with a screening risk evaluation was 

completed. DTSC provided comments In 2006 and a response to 

comments was completed in 2006. DTSC concurred with no further 

action In their letter dated 7/31/2006. No further action required. 

Closure Report, RWQCB 121212008 Tank has been removed. Excavation activities to remove subsurface 

UST 254 & contammated soil have been completed as of 4/21/2008. Additional 

Addendums of Data groundwater sampling was completed on 9/26/2008. Site closed by 

Summary RWQCB in a letter dated 12/2/2008. No further action required. 

November 2008 

Page 6 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

Carve-Out I-M 

Building 

Numberl 

Location Description 

Final Finding of Su,. ,fy to Transfer #4 

Former MCAS EI Taro, CalifornIa 

Closure Report 

TillelDale 

NFA Letter 

Agency/Dale 

Table 4 

Notes 

UST 65A Demolished 1,400-Ga[[on Fuel N/A N/A Tank removal completed on 7/19/1997. Site IS under investigation. 

Oil Tank Further action on gOing. 

PCB T1 0 Demolished PCB Transformer Final EBS, Sept. DTSC 9/25/2003 Removed. 1994 field sUlvey rndicates no evidence of release. No 

PCB T11 Demolished 

PCB T12 Demolished 

Carve-Out I-P 

UST75A Demolished 

.".".".".".".".".".".+."." 

UST75B Demolished 

UST 75C Demolished 

. "."."."."."._.".".".e.".".".e.e.".+_ .••.•.... _ ... _"._" ... e.". 

UST75D Demolished 

-_ . ...j ..•. 

on a Pole. 2003 EPA 9/25/2003 PCB releases identified through the records search or VSls 

conducted for the 2003 EBS 

'"""-"-"""""""""""""" .. ,"""" 

PCB Transformer 

on a Pole. 

PCB Transformer 

on a Pole. 

SOO-Gallon Diesel 

Tank 

Final EBS, Sept 

2003 

Final EBS, Sept 

2003 

Site Assessment 

Report, UST 75A 

8/1995 

DTSC 9/25/2003 

EPA 9/25/2003 

Removed. 1994 field sUlVey rndicates no evidence of release. No 

PCB releases identified through the records search or VSls 

conducted for the 2003 EBS. 

DTSC 9/25/2003 Removed. 1994 field survey Indicates no evidence of release. No 

EPA 9/25/2003 PCB releases identified through the records search or VSls 

conducted for the 2003 EBS. 

RWQCB 12/1211995 Removal completed on 21611992. Site closed by RWQCB in a letter 

daled 12/12/1995. No further action required. 

500-Gallon Diesel Site Assessment RWQCB 3/12/1996 Removal completed on 2/611992. Site closed by RWQCB in a letter 

Tank Report, UST 75B dated 3112/1996. No further action required. 

1/1996 

I 500-Gallon Diesel Site Assessment RWQCB 1/15/2008 Building 75 and loading dock were demolished during the period of 

Tank Report, UST 75C April through July 2007. On 7/6/2007 UST 75C was removed and 

.." .•....•.•...•.......•..••....•. " .•.•.•.•.•.• ········r·· 

550-Gallon Heating 

Oil Tank 

2007 furhter excavation was conducted to excavate and remove 

subsurface contaminated soils. Approximately 98 tons of petroleum 

contaminated soil was removed from the site. A Closure Report was 

prepared and submitted to RWQCB Santa Ana Region In 2007. Site 

was closed by the RWQCB in a letter dated 1/15/2008. No Further 

Action IS reqUired . 

Removal and OCHCA 5/25/2004 UST 750 was located in Northeast corner of Building 75. Fill pipe 

Disposal of UST and vent pipe identified in November 2003. Tank exposed and 

75D on 3/10/2004 approximately 200 gallons of liquid pumped from tank In December 

2003. Remaimng liquid was removed, tank was removed from site, 

and soil samples were collected in March 2004. A closure report 

was submitted to OCHCA in April 2004 and NFl letter from OCHCA 

was recevled in May 2004. 

Page 7 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

Carve·Out II·G 

Building 

Numberl 

Location Description 

APHO 118 Demolished Disturbed Ground 

Perimeter Road 

Final Finding of Suitability to Transfer#4 

Fonner MCAS EI Taro, CalifornIa 

Closure Report 

TitlelDate 

NFA Letter 

Agency/Date 

Table 4 

Notes 

Supplementary DTSC 3/25/2007 Identified on a 1979 photograph. A large area of disturbed ground 

Intormation RWQCB 1/16/2007 (200 by 250 feet) was noted in this photograph. This area IS located 

Package for APHO near Anomaly Area 5, containing APHOs 31, 43, 66, 67, and 68, 

118 10/19/2006 Four of these anomalies are areas of disturbed ground. After 

investigation of Anomaly Area 5, a no further action declaration was 

granted in February 2003. APHO 118 borders the northeastern end 

of the Investigation area for lRP Site 5, Penmeter Road Landfill. Due 

to the proximity of this APHO to lRP Site 5, further evaluation of this 

APHO was recommended dUring the development of a remedial 

program for IRP Site 5. Visual inspections and exploratory trenching 

was performed at APHO 118. Based on this Investigations, RWQCB 

concurred with NFA on 1/16/2007 and DTSC concurred with NFA on 

4/25/2007. 

Page 8 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

Carve-Out II-I 

RFA 213 

Building 

Numberl 

Location 

764 

Descnption 

! Vehicle Wash Rack 

T AA 392A 392 < 90-Day 

TAA392B 392 

Accumulation Pomt 

< 90-Day 

Accumulation POint 

Final Finding of Su" dy to Transfer #4 

Fonner MCAS EI Taro, California 

Closure Report 

Title/Date 

Data Summary 

Report, Solid Waste 

Management Unit 

21312/13/2002 and 

Supplementary 

Information 

Package, Solid 

Waste Management 

Unit (SWMUl 213, 

Vehicle Wash rack at 

Building 392 

12/27/2002 

Closure Report, 

TAA 392A and 392B 

2/2712001 

NFA Letter 

Agency/Date 

RWQCB 2/20/2003 

DTSC 3/312003 

DTSC 3/10/2003 

Table 4 

Notes 

RFA 213, an abandoned vehicle wash rack, IS located ad_iacent to 

the southeastern side of Building 392, The former UST 764A and 

the former OWS 764B, located adiacent to the northeastern side of 

the wash rack, were associated with this wash rack. Soil samples 

were collected from four shallow bormgs through the wash rack 

during the RFA sampling visit in 1992. Cracks In the wash rack were 

repaired dUring 199B. Additional soil samples were collected from 

five bOrings dUring 2002 in response to DTSC comments dated 

3/30/2001. Based on sampling results and a screemng risk 

evaluation, the RWQCB and DTSC have concurred with 

recommendation of no further action. No further action is reqUired. 

TAA 392A was also known as SWMU/AOC 124, The TAA conSisted 

of a concrete pad with berm, sump, and canopy, and was located 

north of Building 392. Soil samples were collected durmg the RFA 

Sampling Visit in 1992. Additional soit samples were collected durmg 

November 1999 and the results with a screenmg risk evaluation 

were presented in the Closure Report dated 2001. No further action 

IS required. 

Closure Report, DTSC 3/10/2003 TAA 392B was also known as SWMU/AOC 271, The TAA consisted 

T AA 392A and 392B 

2/27/2001 

of a concrete pad with berm and a sump, and was located north of 

Building 392. Soil samples were collected dunng the RFA Sampling 

Visit in 1992. Additional soil samples were collected dunng 

November 1999 and the results with a screening risk evaluation 

were presented in the Closure Report dated 2001. No further action 

IS required. 

UST308 308 2BO-Gallon Diesel Summary Report, RWQCB 5/1/2006 UST 308 was a 280-gallon steel fuel storage tank for the potable 

water system booster pump in Building 308. The tank site IS located 

southwest of Building 308 and northeast of Bui[ding 392. UST 308 

was removed in March 2003 and confirmation soil samples were 

collected with OCHCA oversight. The site was referred to the 

RWQCB by OCHCA on 6/6/2003, Soil samples were collected from 

three bonngs near the former tank excavation m October 2004 and 

the approXimate extent of the petroleum-Impacted soils was 

evaluated. The release appeared to be limited to a relatively small 

area near the concrete foundation for the former tank. The concrete 

foundation and approXimately 10 tons of petroleum-Impacted soils 

were excavated and removed in July 2005. The RWQCB aSSIgned 

Geotracker [0 T0605921683 to Former UST Site 308. No further 

action is required. 

Tank Former UST Site 

308 

11/18/2005 

Page 9 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

UST392A 

UST392B 

Building 

Numberl 

Location 

392 

392 

•.• ---._.-•. j ... 

Description 

500-Gallon 

Unleaded Fuel 

Tank 

2,000-Galion 

Gasoline Tank 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California Table 4 

Closure Report 

TitlelDate 

Tank Removal Field 

Activities 

8115/1993 

NFA Letter 

Agency/Date 

OCHCA 1219/1996 

Notes 

UST 392A (also known as SWMU/AOC 298) and approximately 

22 feet of associated PIPing were removed on 7/15/1993 under 

OCHCA plan check 92-283. The tank was located near the former 

boiler room at Building 392. 

Site closed by OCHCA in a letter dated 12/9/96. No further action 

required . 

Tank Removal Field OCHCA 3/14/1997 UST 392B was removed on 12/18/1987. 

Activities Site closed by OCHCA in a letter dated 3/14197. No further action 

! 12/18/1987 required. 

UST 392C 392 i 400-Gallon Diesel Tank Removal and OCHCA 7/11/1997 UST 392C was removed on 3/12/1997 under OCHCA plan check 

UST392D 392 

UST 392E 392 

. -•.•.•.•.• ; .... 

UST392F 392 

Tank Site Closure Report, 96-193. The tank was located northeast of Building 392. 

2,000-Galion 

Gasoline Tank 

2,000-Galion 

Gasoline Tank 

UST392C 

6/20/1997 

. _._._ .. j .... 

Addendum Number 

2 to Site 

Assessment Report, 

Former 

Underground ! 

Storage Tank 3920 i 

Site 2/26/2004 

USTRemoval 

Report, UST 392E 

10/27/1999 

Site closed by OCHCA in a letier dated 7/11/97. No further action 

required . 

RWQCB 6/7/2004 UST 3920, a former diesel fuel storage tank, was removed in 

approXimately 1987. A new fiberglass tank, UST 392F, was installed 

at the location of Former UST 3920, and UST 392F was removed 

with OCHCA oversight and closed in 1999. Soil samples were 

collected from several bOrings dUring the site assessment activities 

that were conducted at Former UST Site 392D during the penod 

from 1999 through 2002. The vertical extent of the release IS 

approximately 60 feet below ground surface based upon the results 

of the site assessment sampling activities. A site assessment 

addendum with an evaluation of the leaching potential of residual 

petroleum hydrocarbons was completed in 2004, and the RWQCB 

concurred with no further action status In their letter dated 6/7/2004. 

The RWOCB assigned Case Number 083003998T to Former UST 

i Site 392D. No further action reqUired . •.....•....•.•.. , ................................................ , ........................•.•................................ 

OCHCA 12/9/1999 UST 392E, the fuel dispensing Island, and approximately 30 feet of 

associated piping were removed on 9/9/1999. The tank was located 

south of Building 392. OCHCA closed the site on 12/9/1999. No 

further action IS required . 

2,OOO-Gallon UST Removal OCHCA 12/9/1999 UST 392F, the fuel dispenSing Island, and approximately 30 feet of 

Gasoline Tank Report, UST 392F associated piping were removed on 9/9/1999. The tank was located 

10127/1999 along the southwestern side of Building 392. OCHCA closed the site 

on 12/9/1999. No turther action is required. 

Page 10 of 15 
Final Finding of Suo ty to Transfer #4 

January 2009 Fonner MCAS EI Taro, California Table 4 

Table 4: Locations of Concern 

LOC 10 

UST764A 

Building 

Numberl Closure Report NFA Letter 

Location Description Title/Date Agency/Date Notes 

764 500-Gallon Waste Summary Report for RWQCB 5/16/2006 UST 764A (SWMU 214) and OWS 764B (SWMU 215) were located 

Oil Tank Former UST 764A OTSC 7/31/2006 adiacent to SWMU 213 (a wash rack located adiacent to the 

and OWS Site 7648 southeast end of Building 392 near Building 764). Soil samples were 

Site 12/1/2005 collected adiacent to UST 764A dUring the RFA Sampling Visit in 

1992. UST 764A, OWS 764B, and approXimately 6 feet of 

associated piping were removed on 8/9/1999 with overSight by the 

OCHCA. Soil samples were collected from four borings dUring site 

assessment activities In 2000. Additional soil samples were 

collected from a boring near the center of the former tank excavation 

In 2005. The RWQCB concurred with NFA for UST 764A10WS 764B 

on 5/16/2006, and OTSC concurred with NFA on 7/31/2006. The 

RWQCB aSSigned Geotracker 10 T0605968363 to Former UST Site 

764AfOWS Site 7648. No further action required. 

OWS 764B 764 100-Gallon 

OillWater 

Seperator 

Summary Report for 

Former UST 764A 

and OWS Site 764B 

RWQCB 5/16/2006 

DTSC 7/31/2006 

UST 764A (SWMU 214) and OWS 764B (SWMU 215) were located 

adiacent to SWMU 213 (a wash rack located adiacent to the 

southeast end of Buitding 392 near Building 764). Soil samples were 

collected adjacent to UST 764A dunng the RFA Sampling Visit in 

1992. UST 764A, OWS 764B, and approximately 6 feet of 

associated piping were removed on 9 August 1999 with oversight by 

the OCHCA. Soil samples were collected from four bonngs dunng 

site assessment activities In 2000. Additional soil samples were 

collected from a baring near the center of the former tank excavation 

in 2005. The RWQCB concurred with NFA for UST 764A10WS 764B 

on 5/16/2006, and DTSC concurred with NFA on 7/31/2006. The 

RWQCB assigned Geotracker ID T0605968363 to Fonner UST Site 

764A10WS Site 764B. No further action reqUired. 

Sile12/1/2005 

Page11of15 
January 2009 

Final Finding of Suitability to Transfer#4 

Former MCAS EI Taro, CalifornIa Table 4 

Table 4: Locations of Concern 

LOCID 

Carve-Out II-P 

AST637 

Building 

Numberl 

Location 

637 

Description 

500-Gallon 

Propane Tank 

-""j"-"""-"""-""-""-"""""-""-""-"-"-""" ·"t""" 

Closure Report 

Title/Date 

Information 

Package, 

Aboveground 

Storage Tank 637 

10/24/2001 

NFA Letter 

AgencylDate 

DTSC approval of 

Sep, 2003 EBS on 

9/2512003 

EPA 9/25/2003 

Notes 

AST 637, used for storage of propane, was removed on 

apprOXimately 2/28/1999. No releases identified; no further action 

required; Determination of NFA was by concurrence with the 2003 

EBS. No further action required. The Information Package published 

on 10/24/2001 is not a Closure Report. It was prepared subsequent 

to obtammg NFA concurrence to document and track the closure 

process. 

UST 637-1 637 12,OOO-Galion 

Unleaded Fuel 

Tank 

Summary Report RWQCB 3/1212008 UST 637-1, UST 637-2, & UST 637-3 and approximately 836 feet of 

UST 637-2 

UST637-3 

Former UST 637-1, associated piping were removed on 8/19/1999 under OCHCA plan 

2, and 3 dated check PM99·054. Field activities are documented in the 

12/27/07 "Underground Storage Tank Removal Report, USTs 637-1, 637-2, 

637·3, Marine Corps Air Station, El Toro, California" (Geofon 

10/27/1999). Additional remedial excavation activities were 

conducted in October 2007 by ECS and Summary Report was 

submitted in December 2007. The RWQCB concurred with NFA on 

3/12/2008. 

637 12,OOO-Galion See Notes for UST RWQCB 3/1212008 See Notes for UST 637-1, 

Unleaded Fuel 637-1. 

Tank i 

637 12,OOO-Galion See Notes for UST RWQCB 3/12/2008 I See Notes for UST 637-1. 

Unleaded Fuel 637-1, 

Tank 

Page 12 of 15 
January 2009 

Table 4: Locations of Concern 

LOCID 

Carve-Out 111-0 

IRP 13 

UST 176 

UST 177 

Building 

Numberl 

Location 

Demolished 

.•.•.•.•.•.•. -.-.-~,.-.•. 

26 

26 

UST178 26 

Descnption 

Oil Change Area 

(OU-3) 

25,000-Galion 

Aviation Gas, 

Wastewater Tank 

50,000-Galion 

AViation Gas, 

Wastewater, Fuel 

Oil Tank 

50,000-Galion 

AViation Gas, 

Wastewater, Fuel 

Oil Tank 

Final Finding of Su., Ay to Transfer #4 

Former MCAS EI Taro, CalifornIa Table 4 

Closure Report 

Title/Date 

Draft Final Record 

of Decision, au 2A 

& 3A, No Action 

Sites 

9/30/1997 

NFA Letter 

Agency/Date 

EPA,DTSC, 

RWQCB 

9/30/1997 

Notes 

Releases of crankcase oil. Site was In operation from 1977-1983. 

ROD signed in September 1997. 

•. +_ .. __ ._----_._----_ ....... . -.. ~ .. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-. 

Site Assessment 

. and Remedial 

i Action Report, Tank 

Farm 2 4/24/1998 

and Information 

Summary 

Site Assessment 

and Remediai 

Action Report, Tank 

Farm 2 4/24/1998 

Site Assessment 

and Remedial 

Action Report, Tank 

Farm 2 4/24/1998 

RWQCB 3/27/2000 

for Soil and RWQCB 

11/8/2007 for 

Groundwater 

RWQCB 3/27/2000 

for Soil and RWQCB 

1118/2007 for 

Groundwater 

UST 176 was constructed in 1943. UST 176 and other tanks at 

Former Tank Fanm 2 (USTs 176 -183) were removed in 1995 under 

OCHCA plan check 9S R 099. Excavation of tanks and PIPing occurred 

dUring August through December 1995. SVE removed 

approximately 78,000 pounds of petroleum hydrocarbons from the 

vadose zone at Tank Farm 2 dunng the penod from 1 October 1996 

through 11117/1997. The RWQCB concurred with no further action 

for the vadose zone In the letter dated 3/27/2000, On 11/8/2007, the 

RWQCB concurred with no further action for groundwater beneath 

Former Tank Farm 2 (USTs 176-183 and USTT-5) 

UST 177 was constructed in 1943. UST 177 and other tanks at 

Former Tank Farm 2 were removed in 1995 under OCHCA plan 

check 95 R099. Excavation of tanks and piping occurred during 

August through December 1995. SVE removed approximately 

78,000 pounds of petroleum hydrocarbons from the vadose zone at 

Tank Fanm 2 during the period from 10/1/1996 through 11/17/1997, 

The RWQCB concurred with no further action for the vadose zone In 

the letter dated 3/2712000, On 11/8/2007, the RWQCB concurred 

with no further action for groundwater beneath Former Tank Farm 2 

(USTs 176-183 and USTT-5), 

RWQCB 3/27/2000 UST 178 (also known as SWMUJAOC 48) was constructed in 1943, 

for Soil and RWQCB UST 178 and other tanks within the Former Tank Farm 2 were 

11/8/2007 for removed in 1995 under OCHCA plan check 95 R099. Excavation of 

Groundwater tanks and piping occurred during August through December 1995. 

SVE removed approximately 78,000 pounds of petroleum 

hydrocarbons from the vadose zone at Tank Farm 2 dUring the 

period from 10/1/1996 through 11117/1997, The RWQCB concurred 

with no further action for the vadose zone In the letter dated 

3/2712000, On 11/8/2007, the RWQCB concurred with no further 

action for groundwater beneath Former Tank Farm 2 (USTs 176-183 

and UST T-5), 

Page 13 of 15 
January 2009 

Table 4: Locations of Concern 

LOC 10 

UST 179 

UST 180 

UST 181 

UST 182 

Building 

Number! 

Location 

26 

26 

26 

26 

t 

Description 

25,OOO-Galion 

AViation Gas, 

Wastewater, Fuel 

011 Tank 

50,OOO-Galion 

AViation Gas, 

Wastewater Tank 

Final Finding of Suitability to Transfer #4 

Fonner MCAS EI Taro, California Table 4 

Closure Report 

Title/Date 

Site Assessment 

and Remedial 

Action Report, Tank 

Farm 2 4/24/1998 

Site Assessment 

and Remedial 

Action Report, Tank 

Farm 2 4/24/1998 

NFA Letter 

Agency/Date 

RWQCB 3/27/2000 

for Soil and RWQCB 

11/8/2007 for 

Groundwater 

Notes 

UST 179 (also known as SWMU/AOC 49) was constructed in 1943, 

UST 179 and other tanks within the Fonner Tank Farm 2 were 

removed in 1995 under OCHCA plan check 95~099. Excavation of 

tanks and piping occurred during August through December 1995. 

i SVE removed approximately 78,000 pounds of petroleum 

. hydrocarbons from the vadose zone at Tank Farm 2 durmg the 

penod from 10/1/1996 through 11117/1997. The RWQCB concurred 

with no further action for the vadose zone in the letter dated 

3/2712000, On 11/8/2007, the RWQCB concurred with no further 

action for groundwater beneath Former Tank Farm 2 (USTs 176-183 

and UST T-5) 

RWQCB 3/27/2000 UST 180 (also known as SWMU/AOC 51) was constructed in 1943. 

for Soil and RWQCB UST 180 and other tanks within the Former Tank Farm 2 were 

1118/2007 for removed in 1995 under OCHCA plan check 95-099. Excavation of 

Groundwater tanks and pipmg occurred dUring August through December 1995. 

SVE removed approXimately 78,000 pounds of petroleum 

hydrocarbons from the vadose zone at Tank Farm 2 dUring the 

period from 11/1/1996 through 11/17/1997. The RWQCB concurred 

with no further action for the vadose zone in the letter dated 27 

March 2000. On 8 November 2007, the RWQCB concurred with no 

further action for groundwater beneath Former Tank Farm 2 (USTs 

176-183 and USTT-5). 

50,OOO-Galion Site Assessment RWQCB 3/27/2000 UST 181 was constructed in 1943. UST 181 and other tanks within 

AViation Gas, and Remedial for Soil and RWQCB the Former Tank Farm 2 were removed in 1995 under OCHCA plan 

Wastewater, Fuel Action Report, Tank 11/8/2007 for check 95-099. Excavation of tanks and plpmg occurred dunng 

Oil Tank Farm 2 4/24/1998 Groundwater August through December 1995. SVE removed approximately 

78,000 pounds of petroleum hydrocarbons from the vadose zone at 

Tank Farm 2 dUring the penod from 10/1/1996 through 11117/1997. 

The RWQCB concurred with no further action for the vadose zone In 

the letter dated 3/2712000. On 11/8/2007, the RWQCB concurred 

with no further action for groundwater beneath Former Tank Farm 2 

(USTs 176-183 and USTT-5), 

50,OOO-Galion Site Assessment RWQCB 3/27/2000 UST 182 (also known as SWMU/AOC 52) was constructed in 1943. 

AViation Gas, and Remedial for Soil and RWQCB UST 182 and the other tanks within the Former Tank Farm 2 were 

Wastewater, Fuel Action Report, Tank 11/8/2007 for removed in 1995 under OCHCA plan check 95-099. Excavation of 

Oil Tank Farm 2 4/24/1998 Groundwater tanks and piping occurred during August through December 1995. 

Page 14 of 15 

SVE removed approximately 78,000 pounds of petroleum 

hydrocarbons from the vadose zone at Tank Farm 2 during the 

period from 1011/1996 through 11/17/1997. The RWQCB concurred 

with no further action for the vadose zone In the letter dated 

3/27/2000. On 11/8/2007, the RWQCB concurred with no further 

action for groundwater beneath Former Tank Farm 2 (USTs 176-183 

and UST T-5). 
January 2009 

Final Finding of Sc "lity to Transfer#4 

Former MCAS EI Taro, California Table 4 

Table 4: Locations of Concern 

LOC1D 

UST 183 

UST T-5 

AOC 

APHO 

AST = AVGAS 

BRAC = CDHS 

DTSC 

EBS 

ECS 

EPA 

EX 

FS = GW 

HRA 

10 = IRP = JP-5 

< 

LOC 

Building 

Numberl 

Location Description 

Closure Report 

Title/Date 

NFA Letter 

AgencylDate Notes 

26 25,OOO-Galion Site Assessment- 1 RWQCB 3/27/2000 UST 183 was constructed in 1943. UST 183 and the other tanks 

within the Former Tank Farm 2 were removed in 1995 under 

OCHCA plan check 95-099. Excavation of tanks and piping occurred 

dUring August through December 1995. SVE removed 

apprOXimately 78,000 pounds of petroleum hydrocarbons from the 

vadose zone at Tank Farm 2 dUring the penod from 10/1/1996 

through 11/17/1997. The RWQCB concurred with no further action 

for the vadose zone In the letter dated 3/2712000, On 11/8/2007, the 

RWQCB concurred with no further action for groundwater beneath 

Former Tank Farm 2 (USTs 176-183 and USTT-5). 

Aviation Gas, and Remedial for Soil and RWQCB 

Wastewater, Fuel Action Report, Tank 11/8/2007 for 

Oil Tank Farm 2 4124/1998 Groundwater 

26 

Area of Concern 

, 

2,OOO-Galion 

Waste JP-5 Tank 

Aerial Photograph Anomaly 

aboveground storage tank 

aViation gasoline 

Base Realignment and Closure 

California Department of Health Services 

Department of ToxIc Substances Controi 

Environmental Baseline Survey 

Envlro Compliance Solutions Inc. 

Environmental Protection Agency 

Excavation 

Feasibility Study 

groundwater 

historical radiological assessment 

Identification 

Installation Restoration Program 

Jet Propulsion Fuel, Grade 5 

less than 

Location of Concern 

Site AssessmenU 

Closure Report, 

UST Site T-5 

11/4/1997 

LQ 

MCAS 

MNA = MPE = MSC 

NA 

N/A 

RWQCB 3/27/2000 

for Soil and RWQCB 

11/8/2007l0r 

Groundwater 

Liquid 

Manne Corps Air Station 

UST T-5, also known as SWMUlAOC 17, was located within the 

Former Tank Farm 2. UST T-5 was removed on 11/27/1995 and 

confirmation soil samples were collected under OCHCA plan check 

95-099. Additional sampling was conducted during the site 

assessment of Tank Farm 2. The RWQCB concurred with no further 

action status on 11119/1997. On 11/8/2007, the RWQCB concurred 

with no further action for groundwater beneath Former Tank Farm 2 

(USTs 176-183 and USTT-5). 

RAD radiological 

RCRA Resource Conservation and Recovery 

Monitored Natural Attenuation Act 

Multiple Phase Extraction RI Remedial Investigation 

miscellaneous RD/RA Remedial Deslgn/Remedial Action 

not applicable RFA RCRA Facility Assessment 

not available ROD Record of Decision 

NAVFAC Southwest = RWQCB Regional Water Quality Control Board 

Naval Facilities Engineering Command, Southwest SAIC = SCience Applications International 

NFA = No Further Action Corporation 

NFl = No Further Investigation SRU = Silver Recovery Unit 

OCHCA = Orange County Health Care Agency ST = Stain 

OHM OHM Remediation Services Inc. SVE Soil Vapor Extraction 

OPS Operating Properly and Successfully SWMU Solid Waste Management Unit 

OU = Operable Unit TM = Temporary Accumulation Area 

OWS = oil/water separator UST = underground storage tank 

PCB polychlorinated biphenyl VSI visual Site Inspection 

ppm part per million 

PRG preliminary remediation goal 

PRL Potential release Location 

Page 15 of 15 

Final Finding of Su., ,y to Transfer #4 

January 2009 Fonner MCAS EI Taro, California Table 5 

Table 5: Locations of Concern With On-going Petroleum Corrective Actions 

LOC 10 

Carve-Out 1-8 

UST 651-1 

UST 651-2 

UST 651-3 

UST 651-4 

Carve-Out I-M 

UST65A 

Description 

Closure Report 

TitielDate 

NFA Letter 

AgencylDate Notes 

12,OOD-Gallon Unleaded Fuel Tank Summary Report, RWOCB 1114/2008 Tank has been removed. Remediation conducted dunng 2000. 

L I 12,000-Galion Unleaded Fuel Tank 

I 

SVE Operations Vadose zone SVE treatment has been completed and closure 

and Confirmation documentation submitted on 2126/2008. MNA Evaluation and LongSampling Activities term Monitoring Plan for groundwater submitted on 5/29/2008. 

RWQCB concurred with NFA recommendation in a letter dated 

2008 11/4/2008. Navy will retain access to the site to allow for ongoing 

Summary Report, 

SVE Operations 

and Confirmation 

Sampling Activities 

2008 

sampnng and maintenance of eXisting groundwater monitoring 

network. 

RWQCB 11/4/2008 Tank has been removed. Remediation conducted during 2000. 

Vadose zone SVE treatment has been completed and closure 

documentation submitted on 2/26/2008. MNA Evaluation and Longterm Monitoring Plan for groundwater submitted on 5/29/2008. 

RWQCB concurred with NFA recommendation In a letter dated 

11/4/2008. Navy will retain access to the site to allow for ongoing 

I i sampling and maintenance of eXisting groundwater monitoring 

network. 

12,OOO-Gallon Unleaded Fuel Tank ! Summary Report, RWQCB 11/4/2008 Tank has been removed. Remediation conducted during 2000. 

SVE Operations Vadose zone SVE treatment has been completed and closure 

and Confirmation documentation submitted on 2/26/2008. MNA Evaluation and LongSampling Activities term Monitoring Plan for groundwater submitted on 5/29/2008. 

RWQCB concurred with NFA recommendation In a letter dated 

2008 11/4/2008. Navy will retain access to the site to allow for ongOing 

sampling and maintenance of eXisting groundwater monitoring 

network. 

12,OOO-Galion Unleaded Fuel Tank Summary Report, RWQCB 11/412008 Tank has been removed. Remediation conducted dunng 2000. 

1,400-Gallon Fuel Oil Tank 

SVE Operations Vadose zone SVE treatment has been completed and closure 

and Confirmation documentation submitted on 2/26/2008. MNA Evaluation and LongSampling Activities term Monitoring Plan for groundwater submitted on 5/29/2008. 

2008 

NfA 

Page10f2 

NfA 

RWQCB concurred with NFA recommendation In a letter dated 

11/4/2008. Navy will retain access to the site to allow for ongOing 

sampling and maintenance of eXisting groundwater monitOring 

network. 

Tank Removal completed on 7/19/1997. Site IS under investigation. 

Further action on gOing. 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Toro, California 

Table 5: Locations of Concern With On-going Petroleum Corrective Actions 

LOCID 

10 

LOC = 

MNA = 

N/A = 

NFA = 

RWQCB 

SVE 

UST 

Description 

Identification 

Locations of Concern 

Monitored Natural Attenuation 

not available 

No Further Action 

Regional Water Quality Control Board 

Soil Vapor Extraction 

underground storage tank 

Closure Report 

TitlelDate 

NFA Letter 

AgencylDate 

Page 2 of2 

Table 5 

Notes 
January 2009 

Table 6: Summary of Asbestos Surveys 

Final Finding of Suitability to Transfer#4 

Former MCAS EI Taro, California 

Building ---- -- r Squa-re! -- ------.- Historical Asbestos Survey 

Carve-Out 10 Number Description Feet Year Built Information Comments 

~----- ! 

I-B I 439 ! Branch Medical/Dental Clinic 70,167 1959 

I-G 7 Storage 10,370 1943 

IT Corp (1989): Transite, vibration FAD ACM found. 

dampener, pipe Insulation, duct 

Insulation. Pipe Insulation & mastic, 

cement panels (assumed), pipe 

elbows, floor tile & mastic, stucco, 

boiler insulation, duct connector. On 

8/1/2000 - 8/3/2000: FAD debris at 

sink room 138 (168 on floor plan). 

FAD in basement mechamcal rooms. 

FAD in stallWell, 2nd floor. Suspect 

FAD wall plaster and surfacmg rooms 

212 & 214 (236 & 238 on floor plan). 

Suspect damaged above drop ceiling 

I in hallway outside room 232 (256 on I Iloor plan). 

IT Corp (1989): No ACM Found I No ACM lound 

Table 6 

II-I 308 Ground Suport EqUipment Shop 720 1944 IT Corp (1989): Floor tile Non-FAD ACM found; not 

sUlVeyed since 1997. 

II-I 

II-I 

II-P 

III-D 

< 

ACM 

FAD 

ID 

392 

764 

637 

26 

Air Craft Ground Suport Equipment 

Shop 

6,400 1955 IT Corp (1989): Duct insulation, pipe 

Insulation 

FAD ACM found 

Vehicle Wash rack Utility Building 228 1984 Not Surveyed I Not Surveyed 

Exchange Gas Station Unknown <1973 Not Surveyed Not Surveyed 

Communications Shop 

before 

asbestos-containing matenal 

friable, accessible, and damaged 

Identification 

6,240 

Page 1 of 1 

1943 IT Corp (1989): No ACM Found NoACMlound 
January 2009 

Final Finding of Suitability to Transfer #4 

Former MCAS EI Taro, California 

Table 7: Monitoring/Bioventing/SVE Wells 

Carve Out Well 10 

I-B 651 MW-01 

I-B 651 MW-02 

I-B 

I-B 

I-B 

I-B 

I-B 

I-B 

I-B 

651 MW-03 

651 MW-04 

651 MW-05 

651 MW-06 

651 ROI-1 

651 ROI-2 

651 ROI-3 

I-B 651 SVE 1A 

I-B 651 SVE 1C 

I-B 651 SVE 2B 

I-B 651 SVE 20 

I-B 651 SVE 3 

I-B 651 SVE 4A 

I-B 651 SVE 4D 

I-B 651 SVE 5 

I-B 651 SVE 6 

I-B 651 SVE 7 

ID = Identification 

MW Monitoring WeI! 

ROI Radius of Influence 

SVE Soil Vapor Extraction 

Page 1 of 1 

Table 7