TABLE 1.

GREEN ACRES MILITARY FAMILY HOUSING-ASBESTOS, LEAD, AND PESTICIDES

PATHWAY NAME	CONTAMINANTS	EXPOSURE PATHWAYS ELEMENTS					TIME	COMMENTS
		SOURCE	ENVIRONMENTAL MEDIA	POINT OF EXPOSURE	ROUTE OF EXPOSURE	EXPOSED POPULATION
Green Acres Military Family Housing	Pesticides in living area	Crawl space air	air, contaminated interior surfaces	Inside houses	Inhalation, ingestion from contact with interior surfaces	Residents including sensitive subpopulations such as children (particularly ages six and under) and pregnant and nursing women, and women of childbearing age. About 300 to 500 people may have been living at Green Acres at any one time in the 128 houses depending on the number of dependents	Past: duration of exposure approx. 5 to 9 years per rotation starting in the 1940s. Future exposure unknown pending reuse and home improve-ments	The houses are currently leased to the MJPA. In turn, the MJPA is renting the houses. ATSDR reviewed the pesticide sampling data together with past, current, and future exposure scenarios, use of the Green Acre Houses, and the toxicology of the pesticides. Based on this review, we have concluded that past, current, and future exposure to indoor air contaminated with pesticides poses no (apparent) public health hazard. Although we have made this conclusion, ATSDR recommends the placement of barriers in the crawl space to prevent or lower pesticide migration into the houses.
	Pesticides in crawl space	Unknown but probably pesticide application	soil, air	Crawl space	Ingestion inhalation	Residents, maintenance workers		ATSDR concluded that the past, current, and future exposures poses no (apparent) public health hazard. ATSDR recommends future prevention of exposure by maintaining restricted access to the crawl space.
	Lead	Interior and exterior lead paint	soil, air	Lead contaminated household dusts, paint chips, painted surfaces, and soils	Inhalation (of lead contaminated dusts) Ingestion (paint chips, children teething on wood surfaces, dusts and chips ingested via hand-mouth and toy-mouth activity	Residents and sensitive subpopulations discussed above.		No apparent public health hazard based on limited blood lead sampling data. ATSDR recommends exposure prevention. The AFBCA or MJPA should maintain lawns and shrubs adjacent to the houses including the roof driplines and all bare soils should be replanted to prevent access to the lead in the soils by children. Gardens adjacent to the houses should be prohibited to limit contact with the lead in the soil. Children should not be allowed to play next to the homes because of lead contaminated soils identified in the drip soil samples. Playground equipment or fenced areas for children should not be located next to the homes. ATSDR also recommends that MJPA and AFBCA follow the protective public health measures identified in 66 Federal Register 1206 for lead in residential soils.
	Asbestos	Building materials	air	Inside house	inhalation	Residents		A visual inspection and a review of the types of building materials present indicate that asbestos is present but in good condition. The AFBCA or MJPA should maintain and routinely inspect the asbestos in the houses.

TABLE 2.

PESTICIDE CONCENTRATIONS IN CRAWL SPACE SOIL, GREEN ACRES MILITARY FAMILY HOUSING

Pesticide	Range of Concentrations Detected1 (mg/kg)	Number of Sampled Houses with Pesticides above Detection Limits	ATSDR's Comparison Values2
			Value (mg/kg)	Criteria
Chlordane (alpha)	<0.0005 to 31 J3	6	0.5	Chronic Oral CREG
Chlordane (gamma)	<0.0008 to 26 J	5	0.5	Chronic Oral CREG
Dieldrin	<0.0009 to 54 J	2	0.04	Chronic Oral CREG
4-4'-DDD	<0.0017 to 65 J	11	3	Chronic Oral CREG
4,4'-DDE	<0.0030 to 77 J	18	2	Chronic Oral CREG
4,4'-DDT	<0.18 to 440 J	20	2	Chronic Oral CREG
Methoxychlor	< 0.015 to 0.047	1	10	Chronic Oral Pica Child

1. Tetra Tech, Inc. 1996.
2. ATSDR 1997.
3. J - indicates that the concentration value is an estimated quantity because the analytical methods used to quantify the chemical concentrations were not sufficiently precise. Precision is based on detection limits of the sampling, analysis, and instrument methods.

TABLE 3.

INDOOR AIR PESTICIDE CONCENTRATIONS-1996 GREEN ACRES MILITARY FAMILY HOUSING

Pesticide	Range of Concentrations Detected1 (g/m3)	EPA Region 9 Preliminary Remediation Goals2 (g/m3)	ATSDR's Comparison Values (g/m3)
			CREG3	MRL4
delta-BHC	0-0.00165	--6	--	--
gamma-BHC (lindane)	0-0.0066	0.0052	--	--
Chlordane (alpha)	0.00092-0.170	0.0052	0.003	0.02 chronic 0.2 intermediate
Chlordane (gamma)	0.00089-0.200	0.0052	0.003	0.02 chronic 0.2 intermediate
Dieldrin	0-0.280	0.00042	0.0002	--
4,4'-DDE	0.0021-0.014	0.020		--
4,4'-DDT	0-0.0061	0.020	0.010	--
Endrin	0-0.0058	1.100	--	--
Endrin ketone	0-0.00066	--	--	--
Heptachlor	0	0.00	0.0008	--

1. Armstrong Labs, 1997
2. U.S. EPA, 1996.
3. Cancer Risk Evaluation Guide, ATSDR, 1997.
4. Minimum Risk Level (noncancer risk), ATSDR, 1997
5. Detection limits were not reported. ATSDR assumes "0" means the chemical was not detected.
6. A value is not available.
7. ATSDR Toxicological Profile
8. ATSDR Toxicological Profile

TABLE 4.

INDOOR AIR PESTICIDE CONCENTRATIONS-1997, GREEN ACRES MILITARY FAMILY HOUSING

Pesticide	Highest Reported Detection Limit1 (g/m3)	Maximum Concentration Detected1 (g/m3)	Region 9 PRG's2 (g/m3)	ATSDR's Comparison Values-CREG3 (g/m3)
Aldrin	<0.005	<0.005	0.00039	0.01
alpha-BHC	<0.005	0.005	0.0011	0.0006
beta-BHC	<0.005	<0.005	0.0037	0.002
delta-BHC	<0.005	<0.005	--4	--
gamma-BHC (lindane)	<0.004	0.008	0.0052	--
alpha-Chlordane	<0.005	0.096	0.0052	0.003
gamma-Chlordane	<0.005	0.14	0.0052	0.003
4,4'-DDD	<0.005	0.97	0.028	--
4,4'-DDE	<0.008	0.18	0.02	--
4.4'-DDT	<0.008	0.022	0.02	0.01
Dieldrin	<0.008	0.21	0.00042	0.0002
Endosulfan I	<0.008	<0.005	22	--
Endosulfan II	<0.005	0.008	22	--
Endosulfan sulfate	<0.008	0.005		--
Endrin	<0.008	<0.008	1.1	--
Endrin aldehyde	<0.008	<0.008	--	--
Endrin ketone	<0.008	0.007	--	--
Heptachlor	<0.005	0.042	0.0015	0.0008
Heptachlor epoxide	<0.005	<.005	0.00074	0.0004
Methoxychlor	<0.005	0.004	18	--
Toxaphene	<0.2	<0.2	0.006	0.003

1. Armstrong Labs, 1997
2. U.S. EPA, 1996.
3. ATSDR, 1997.
4. A value is not available.

TABLE 5.

1994 SOIL SAMPLES AT DRIPLINE OF GREEN ACRES MILITARY FAMILY HOUSING AND MODELED BLOOD LEAD LEVELS IN CHILDREN

House Number	Address	Lead Concen-tration in Soil (mg/kg)1	Side of House	Prior Lead Paint Abatement2
124	124 Adams St.	935 1070 443 246	A B C D	P
333	333 U St.	443 314 330 475	A B C D	C
142	142 Gilley St.	608 2700 796 1530	A B C D	C
328	328 U St.	1010 224	A B	P
170	170 Baucom Blvd.	404 434 712	B C D	P
137	137 Baucom Blvd.	1600 647 616 700	A B C D	P
336	336 DeKay St.	841	B	C
	Averages	776

1. Composite samples were collected at facilities where (1) exterior lead-based paint was present, (2) the paint was in poor condition, and the soil was exposed for sampling. Each "side of house" composite was made up of five subsamples collected from bare soil areas to a depth of 1/2 inch or less. March AFB, 1995a.
2. C- Complete abatement, P - partial abatement, paint not removed behind bushes.

TABLE 6.

NO APPARENT PUBLIC HEALTH HAZARD SITUATION: ON-BASE WATER SUPPLY

PATHWAY NAME	CONTAMINANTS	EXPOSURE PATHWAYS ELEMENTS					TIME	COMMENTS
		SOURCE	ENVIRON-MENTAL MEDIA	POINT OF EXPOSURE	ROUTE OF EXPOSURE	EXPOSED POPULATION
Water Supply On-Base	Volatile Organic Compounds and Boron	IRP Sites 2, 8, 12, 27, and 36	Ground water	Water Taps	Ingestion, inhalation, dermal contact	Base personnel and families living on base. Population varied per year but may have been as high as 10,000 at one time after World War II.	Past estimated from 1940s through 1983	Based on risk calculation no apparent public health hazards are expected.

TABLE 7.

BASE PRODUCTION WELLS

Well	Years of Operation	Average Well Yield 1963-1978 (gpm)	Percentage of Well Total Based on Well Yield	Percentage of Total Water Supplied to the Base
BPW-1	1927-1983	395	15.2	6.7
BPW-2	unknown-1930s	unknown	--	--
BPW-3	1931-1978	202	7.8	3.4
BPW-4	1934-1978	195	7.5	3.3
BPW-5	1941-1988	890	34.2	15.0
BPW-6	1941-1988	921	35.4	15.6
Totals		2603	100	44.0

Source: Earth Technology Corp., 1989 and Hossain, 1984.

TABLE 8.

CONCENTRATIONS OF VOLATILE ORGANIC COMPOUNDS AND BORON IN MARCH AFB'S WATER SYSTEM FROM 1978 to 1983¹

Chemical	Production Wells (g/L)	Water Treatment Plant (g/L)	Tap Water from Distribution System2 (g/L)	EPA's MCL3 (Date promulgated) (g/L)	ATSDR's CV4 (g/L)
Boron	ND5-4600	ND-2300	ND-900	--	100 Interim EMEG Child
Bromodichloro-methane	ND-5.6	ND-5.8	ND-21.9	See Note 6	0.6 CREG
Bromoform	ND	ND-18.9	ND-38.4	See Note 6	4 CREG
Carbon Tetrachloride	ND-9	ND-0.3	ND	5 (1987)	0.3 CREG
Chloroform	ND-10.6	3.5-13.0	ND-32.4	See Note 6	6 CREG
Dibromochloro-methane	ND	ND-9.8	ND-16.2	See Note 6	0.4 CREG
Methylene chloride	ND-0.4	ND	ND-0.5	5 (1992)	5 CREG
Tetrachloroethene	ND-1.5	ND	ND-0.4	5 (1991)	0.7 CREG
Trichloroethene	ND-33.6	ND	ND-2.6	5 (1987)	3 CREG

1 - These analytical results were taken from samples collected on various dates. Samples collected from the production wells were not necessarily taken on the same date as the water treatment plant or water distribution line. Appendix G lists the analytical data, the dates the samples were taken, and the references.
2- The distribution line sample was taken at the base hospital except on August 1979 for Boron (sample collected in building 24242 and was not-detected) and in August 1983 for TCE (sample collected in the dining hall and measured at 2.6 g/L and the barber shop measured at 1.9 g/L).
3- U.S. EPA's maximum contaminant level as specified in the National Primary Drinking Water Regulations
4- CV - Comparison values (see acronyms and abbreviations for further information).
    CREG - Cancer Risk Evaluation Guide for 1E-6 excess cancer risk.
    Interim (Intermediate) EMEG - Environmental media evaluation guide for noncarcinogens for duration exposure of 15 to 365 days.
5 - Chemical was analyzed for and not detected
6- These chemicals are components of trihalomethanes, a class of compounds with an MCL of 100 g/L. This MCL was promulgated in 1991.

TABLE 9.

IRP SITES POSSIBLY CONTRIBUTING TO GROUND WATER VOC CONTAMINATION THAT IMPACTED THE BASE PRODUCTION WELLS

IRP Site Number	IRP Site Name	Dates of Operations	Description	March AFB Cleanup Activities
2	Waste Oil Pit/Solvent Tanks	1940s to 1950s	Above- and underground storage tanks, railroad unloading spur, and aviation gasoline fueling stations. Contaminants included solvents and petroleum products.	Abandoned USTs and contaminated soils removed in 1994. Ground water contamination will be addressed by EPA's Record of Decision for Operable Unit 2.
8	Flightline Shop Zone	1918 to present	Industrial operations including the maintenance and repair of jet engines and aircraft equipment including underground storage tanks. Wastes included fuels, waste oils, spent solvents, paints, and thinners.	Ground water pump and treat and soil vapor extraction proposed as part of the Record of Decision for Operable Unit 2.
12	Civil Engineering Storage Yard	1940 to 1993	Storage of drums, tanks, and transformers. Waste included waste oils and solvents.	Contaminated soil removed in 1994
27	Bldg. 422 Underground tanks	1941 to 1995.	Gas station, oil/water separator, and underground storage tanks used for products and wastes.	Building and tanks removed in January 1996. Ground water contamination will be addressed by EPA's Record of Decision for Operable Unit 2.
36	Bldg 458 Leach Pit	1929 to unknown. Leach pit removed in 1996.	Jet engine maintenance shop leach pit. Waste included solvents.	Contaminated soil removed in 1994. An additional soil cleanup action was planned in 1998. Ground water contamination will be addressed by EPA's Record of Decision for Operable Unit 2.

TABLE 10.

RISK CALCULATIONS

Volatile Organic Compound	Concen-tration	Date of Sample	Well Number	Concen-tration in Well Water Supply (g/L)	Calculated Concentra-tion in Distribution System (g/L)	Cancer Risk		Noncancer Risk Hazard Quotient
						Child	Adult	Child	Adult
Bromodichlormethane	5.6	July 83	BPW-1	1.3	0.6	6.1e-07	8.7e-07	0.006	0.002
Bromoform	<0.2	July 83	BPW-1	0.0	0.0	--	--	--	--
Carbon Tetrachloride	9	Sept 82	BPW-1	2.1	0.9	1.9e-06	2.7e-06	0.250	0.070
Chloroform	15.7	July 83	BPW-1	3.6	1.6	1.6e-06	2.3e-07	0.030	0.009
Dibromochloromethane	<0.1	Sept 82	BPW-1	0.0	0.0	---	--	--	--
Methylene chloride	<0.2	July 83	BPW-1	0.0	0.0	--	--	--	--
Tetrachloroethene	1.5	Sept 82	BPW-1	0.3	0.2	1.7e-07	2.4e-07	0.004	0.001
Trichloroethene	66	June '83	BPW-1	15.2	6.7	1.2e-06	1.7e-06	0.210	0.060
Sums						5.5e-06	5.7e-06	0.500	0.142

TABLE 11.

NO APPARENT PUBLIC HEALTH HAZARD SITUATION: OFF-BASE WATER SUPPLY

PATHWAY NAME	CONTAMINANTS	EXPOSURE PATHWAYS ELEMENTS					TIME	COMMENTS
		SOURCE	ENVIRONMENTAL MEDIA	POINT OF EXPOSURE	ROUTE OF EXPOSURE	POTENTIALLY EXPOSED POPULATION
Past Water Supply Off Base	Trichloroethene and Tetrachloroethene	IRP Sites 5,7,8,9,10,13,14,15, 16,23,29,31,and 34. IRP Site 31 as major source.	ground water	water supply taps, showers, cooking, washing, irrigation	ingestion, inhalation, dermal contact	Residents off base to the east with private wells, approximately 5 to 50 people	Past,, approximately 1970 to 1988	No apparent public health hazard for off-base residents based on concentrations and period of time water was used. To confirm the presence or absence of used private wells in the OU1 area, ATSDR recommends that AFBCA or AFRC send all parcel owners in the OU1 area letters asking about the presence of wells and their use. ATSDR recommends that AFBCA or AFRC sample previously unknown private wells if they are still in use. These wells should be sampled quarterly for one year. With the results of the first sample and each subsequent sample, AFBCA or AFRC should evaluate whether the sampled wells should be closed because of public health. AFBCA or AFRC should also provide information on the status of the investigated wells to State Department of Water Resources, Santa Ana Regional Water Quality Control Board, State Department of Health Services (Division of Drinking Water and Environmental Management), and the Riverside County Health Department. The AFBCA, AFRC, State, County, or private owners should close those wells that are no longer used or inadequately constructed within the plume or adjacent to the downgradient edge of the plume to prevent exposure and the spreading of contamination. The AFBCA or AFRC should confirm with the County of Riverside that well permits should not be issued in the OU1 area.

TABLE 12.

CONCENTRATIONS OF PCE AND TCE IN OFF-BASE PRIVATE WELLS FROM 1986 TO 1990

Chemical	Range	EPA's MCL1	ATSDR's CREG2
TCE	ND3-17.0 g/L	5 g/L	3 g/L
PCE	ND-0.8 g/L	5 g/L	0.7 g/L

1 - The Maximum Contamination Level (MCL) for TCE and PCE was promulgated in 1987 and 1991, respectively.
2 - CREG - Cancer Risk Evaluation Guide (see acronyms, abbreviations, and glossary for further information)
3 - Not Detected

FIGURES

Figure 1. Site Map of March Air Force Base

Figure 2. March AFB Production Wells

Figure 3. Water Supply System at March AFB from 1960s to 1983¹

Figure 4. Location of Off-Base Private Wells and Ground Water Contamination

APPENDICES

APPENDIX A: POPULATION DATA AND CENSUS TRACT MAP

Appendix A. Population Data and Census Tract Map

APPENDIX B: SUMMARY OF SITE EVALUATIONS^1,2,3

CERCLA SITES

Site Location and Number	Status
IRP Sites 14, 22, 23, 32	These are sites with no evidence of contaminant release(s)
IRP Sites 5, 9, 13, 16, 22, 23, 30, 35, 38	These are sites where a Remedial Investigation was completed and the preliminary remediation goals were not exceeded or the calculated risks were below 1E-6 for carcinogens or the hazard index was at or below 1 for noncarcinogens.
IRP Sites 2, 7, 11, 19, 29, 37	These are sites where a clean up did not occur but the contamination requires that the land only be used for industrial purposes.
IRP Sites 4, 6a	Sites with completed clean up actions and no further action scheduled. | | | | | | V	These are sites with surface, sub-surface, or ground water contamination where the waste was kept in place and capped. Ground water is being monitored or addressed by a ground water treatment system.
IRP Sites 17		This Site consisted of a concrete swimming pool that was filled with soil, drums, paint containers and demolition debris. The pool contents were excavated in 1994. Confirmation samples found PCB contaminated soils below the excavation between 8.5 and 13.5 feet below ground surface at 0.8 to 4.4 mg/kg. One of these samples was spilt and analyzed by a separate laboratory. The PCB concentration was measured at 190 mg/kg. The ROD approves this site for use as residential. March AFB has placed restrictions on excavations at this site.
IRP Sites 20, 24, 26, 40		Suitable for residential.
IRP Site 1, 37, 44		These are sites where surface soil was remediated and the remaining contamination is only suitable for industrial use.
IRP Sites 15. 34	Site with completed clean-up actions and additional cleanup is required.	These are sites where surface soils are to be cleaned up.
IRP Sites 2, 3, 8, 27, 33, 34, 36		These are sites where subsurface soils and ground water are to be cleaned up. For Site 8, surface soil clean up only.
IRP Sites 12, 25		These are sites where the additional clean up consists of ground water monitoring
IRP Sites 10, 18, 31, 39	Sites with required cleanup.	Subsurface soils
IRP Sites 31		Ground water
IRP Sites 21, 41, 43	Sites that will be included in a Basewide Operable unit and Record of Decision. Sites 21 and 43 are proposed for ground water monitoring. Site 41 had an interim tank removal with proposed no further action.

Notes: IRP Site 28 consisted of a clustering of IRP Sites 5, 7, 9, 10, 13, and 15 to facilitate ground water monitoring and soil sampling activities. Another name for Site 28 that has been used is Zone Monitoring Number 1. March AFB is no longer using this cluster terminology. The reader is referred back to the individual IRP Sites.
Source: Tetra Tech, 1996, Satrom, 1998.

RCRA AND EBS SITES (continued)

Site Location and Number	Summary and Evaluation	Comments and Recommendations
RCRA Facility Assessment (RFA) Sites 105 Solid Waste Management Units (SWMUs) and 50 Areas of Concern (AOCs) were identified. These 155 units/areas were classified into three groups. The first group are those recommended for no further action and this consisted of 68 units/areas (59 SWMUs and 9 AOCs). The second group consists of those units/areas classified as requiring further action and this consisted of 57 units/areas (43 SWMUs and 14 AOCs). The third group is units/areas designated potential release locations consisting of 30 units/areas (3 SWMUs and 27 AOCs).2 The second group was determined to be no further action (Satrom, August 1988). The third group of 30 units/areas is listed below.		Work on the 57 SWMUs and AOCs requiring further action is pending. ATSDR will review additional data as it is provided.
A, B, E, F, H, J, K, M, N, O, Q, R, S, T, U, V, W, X, DD	Soil gas survey and/or geophysical survey conducted in 1995 did not find evidence of contaminant releases. No further action proposed (Tetra Tech 1996b)
C, D, G, I, L, P, Y, Z, AA	Sampling of these sites included one or more of the following: soil gas, soil boring, surface soil/hand auguring, and trenching (Tetra Tech 1996b). C - Soil gas levels below levels of concern. D - No current exposure. However, Tetra Tech recommends additional monitoring should be conducted during any invasive construction activities. G, I - Soil gas and surface samples are below levels of concern. P - Trench and surface soil samples below levels of concern. Z - Soil gas survey did not find evidence of contaminant release. Geophysical surveys did find evidence of debris. Ground water will be monitored as part of IRP Site 3 base wide ground water monitoring plan. AA - Soil samples below levels of concern.
L Y BB and CC	These are sites pending further work. Soil sampling to be conducted. Trenching and sampling to be conducted Soil sampling to be conducted.	ATSDRs comments on hold until additional information is provided.
Environmental Base Survey (EBS) Sites An Environmental Baseline Survey was conducted in 1994 of the entire March AFB. From this survey, 30 sites were identified with a potential for environmental concerns. Of these 30, 12 sites were recommended for no further action and two sites are being evaluated as part of Site 8 in Operable Unit 2. In addition, five more Areas of Concern were identified and investigated.
BB-1,7; Q-4,7; N-4,7; U-2,7; S-2,7; Q-7,7; Area Target Butt; A-28,1; Small Arms Drainage Ditch	These are areas that were visually inspected with a potential for containing contamination. However, in a subsequent visual inspection, these areas were regraded, soil removed was removed, or recent burnings of area occurred removing any visual clues of the contamination. In the case of area S-2,7, hazardous materials were not apparently used in the area and the absence of vegetation was due to the poor soil conditions.
A-28,1; N-3,7; and P-2,7 and three Sites at the Veterans Administration Property.	These are areas where oil was applied to unimproved area for dust and weed control from 1941 to 1945. These areas are referred to "oiled mats" or "oil-treated surface drill areas." Records indicate six oiled mats existed: two on West March (P-2,7 and N-3,7), one on the Main Base (A-28,1), and three on Veterans Administration (VA), Riverside National cemetery. EBS Site A-28,1 is now in an area now cover by the active flightline parking apron, P-2,7 is beneath the Arnold Heights military housing area, and N-3,7 is discussed below.	P-2,7 is beneath the Arnold Heights military housing area. Since PCBs were produced from 1929 to 1977 and were present in many oils, PCBs could be present in these oiled mat areas. Although, these oiled mats are more than 50 years old, degradation of PCBs is very slow in soils and an unknown past exposure may have occurred. The current status of these oil mats are unknown and would be very difficult to determine. Recommend sampling after demolition of P-2,7 if reuse involves children.
Area A (Buildings 2274 and 2305)	Sampling to be conducted	Additional sampling for Area A.
N-3,7; Q-2,7, Q-6,7; Q-8,7; 549; 5044 (Site T); U-5,7; U-4,7, Z-3,7; Z; STP; Building 355; Building 458; Building 479; A-2,7; Z-2,7; Z-3,7SR	N-3,7; Q-6,7; Q-8-7; 5044(T); U-5,7; Q-4,7; STP; 458 - Samples and laboratory results below levels of concern. Q-2,7 - Site being investigated as part of RFA Site P. Site P has concentrations below levels of concern. 549 - Soil removed from stained area. Samples and laboratory results below levels of concern. Z-3,7; PAH levels above screening levels. Extent of contamination is unknown. Z; Consists of three areas. Levels of PCBs in Area B is above screening levels. However, the location precludes possible significant exposure. 355 - Contaminated ground water is part of the OU-2 ground water plume. Soil gas will be further investigated as part of OU2 Site 8. Former Skeet Ranges A-2,7; Z-2,7; Z-3,7SR - Lead levels were not above levels of concern.	Q-4,7, Tetra Tech recommends excavation due to the potential for asbestos containing material. However, this area is in the former Weapons Storage Area and is secured by a fence and locked gate so no current exposures are unlikely. However, future use should consider this potential exposure. Z-3,7- Tetra Tech recommends additional investigation. However, because of location, current exposure is unlikely but could be a future issue.
5 Areas of Concern Buildings with Crawl Spaces Gregory Well Building Transformer Spill 15th Air Force Headquarter Cooling Tower JP-4 Pipeline Lt. General Archie Old, Jr. Golf Course-Pesticide Mixing Area	Buildings with crawl spaces include residential and office buildings. The residential buildings are addressed in Section II.A. The pesticide levels in the office buildings are not a public health concern. Gregory Well Building-Sampled for PCBs and not detected. 15th Air Force Headquarter Cooling Tower. Soils around the cooling tower were sampled for hexavalent chromium and none was detected. However, the samples should have been analyzed for trivalent chrome since the hexavalent chromium would probably be reduced in the environment. Regardless, no public health issues would result from this area because of its location and land use. Golf Course and JP-4 Pipelines - Levels not of concern
Other Sites
Building 373 (355) Building 426 Building 434 Building 453 Former Incinerator	Buildings 373, 434, and 453 are industrial shops and Building 426 is a former laundry. Soil gas was sampled at these buildings, soil was sampled at the former incinerator, and ground water and soils were sampled at Building 373.	Soil gas concentrations from buildings 426, 434, and 453 are below levels of concern. Soil samples from the former incinerator are below levels of concern. Ground water samples from Building 373 identify it as a source of VOC contamination. Since this area is within the Operable Unit 2 ground water plume it is not a concern. Furthermore, the soil gas concentrations are below levels of concern.

1. Tetra Tech 1996b.
2. Tetra Tech 1997a.
3. Tetra Tech 1995b.

APPENDIX C: PUBLIC HEALTH ASSESSMENT CONCLUSION CATEGORIES

CATEGORY A: URGENT PUBLIC HEALTH HAZARD

This category is used for sites where short-term exposures (< 1 yr) to hazardous substances or conditions could result in adverse health effects that require rapid intervention.

This determination represents a professional judgement based on critical data which ATSDR has judged sufficient to support a decision. This does not necessarily imply that the available data are complete; in some cases additional data may be required to confirm or further support the decision made.

Criteria:

Evaluation of available relevant information* indicates that site-specific conditions or likely exposures have had, are having, or are likely to have in the future, an adverse impact on human health that requires immediate action or intervention. Such site-specific conditions or exposures may include the presence of serious physical or safety hazards, such as open mine shafts, poorly stored or maintained flammable/explosive substances, or medical devices which, upon rupture, could release radioactive materials.

* Such as environmental and demographic data; health outcome data; exposure data; community health concerns information; toxicologic, medical, and epidemiologic data.

 

ATSDR Actions:

---

ATSDR will expeditiously issue a health advisory that includes recommendations to mitigate the health risks posed by the site. The recommendations issued in the health advisory and/or health assessment should be consistent with the degree of hazard and temporal concerns posed by exposures to hazardous substances at the site.
Based on the degree of hazard posed by the site and the presence of sufficiently defined current, past, or future completed exposure pathways, one or more of the following public health actions can be recommended:

• biologic indicators of exposure study
• biomedical testing
• case study
• disease and symptom prevalence study
• community health investigations
• registries
• site-specific surveillance
• voluntary residents tracking system
• cluster investigation
• health statistics review
• health professional education
• community health education
• substance-specific applied research

CATEGORY B: PUBLIC HEALTH HAZARD

This category is used for sites that pose a public health hazard due to the existence of long-term exposures (> 1 yr) to hazardous substance or conditions that could result in adverse health effects.

This determination represents a professional judgement based on critical data which ATSDR has judged sufficient to support a decision. This does not necessarily imply that the available data are complete; in some cases additional data may be required to confirm or further support the decision made.

Criteria:

Evaluation of available relevant information* suggests that, under site-specific conditions of exposure, long-term exposures to site-specific contaminants (including radionuclides) have had, are having, or are likely to have in the future, an adverse impact on human health that requires one or more public health interventions. Such site-specific exposures may include the presence of serious physical hazards, such as open mine shafts, poorly stored or maintained flammable/ explosive substances, or medical devices which, upon rupture, could release radioactive materials.

*Such as environmental and demographic data; health outcome data; exposure data; community health concerns information; toxicologic, medical, and epidemiologic data.

 

ATSDR Actions:

---

ATSDR will make recommendations in the health assessment to mitigate the health risks posed by the site. The recommendations issued in the health assessment should be consistent with the degree of hazard and temporal concerns posed by exposures to hazardous substances at the site. Actions on the recommendations may have occurred before the actual completion of the public health assessment.
Based on the degree of hazard posed by the site and the presence of sufficiently defined current, past, or future completed exposure pathways, one or more of the following public health actions can be recommended:

• biologic indicators of exposure study
• biomedical testing
• case study
• disease and symptom prevalence study
• community health investigations
• registries
• site-specific surveillance
• voluntary residents tracking system
• cluster investigation
• health statistics review
• health professional education
• community health education
• substance-specific applied research

CATEGORY C: INDETERMINATE PUBLIC HEALTH HAZARD

This category is used for sites when a professional judgement on the level of health hazard cannot be made because information critical to such a decision is lacking.

Criteria:

This category is used for sites in which "critical" data are insufficient with regard to extent of exposure and/or toxicologic properties at estimated exposure levels. The health assessor must determine, using professional judgement, the "criticality" of such data and the likelihood that the data can be obtained and will be obtained in a timely manner. Where some data are available, even limited data, the health assessor is encouraged to the extent possible to select other hazard categories and to support their decision with clear narrative that explains the limits of the data and the rationale for the decision.

ATSDR Actions:

---

ATSDR will make recommendations in the health assessment to identify the data or information needed to adequately assess the public health risks posed by the site.

Public health actions recommended in this category will depend on the hazard potential of the site, specifically as it relates to the potential for human exposure of public health concern. Actions on the recommendations may have occurred before the actual completion of the public health assessment.

If the potential for exposure is high, initial health actions aimed at determining the population with the greatest risk of exposure can be recommended. Such health actions include:

• community health investigation
• health statistics review
• cluster investigation
• symptom and disease prevalence study

If the population of concern can be determined through these or other actions, any of the remaining follow-up health activities listed under categories A and B may be recommended.

In addition, if data become available suggesting that human exposure to hazardous substances at levels of public health concern is occurring or has occurred in the past, ATSDR will reevaluate the need for any followup.

CATEGORY D: NO APPARENT PUBLIC HEALTH HAZARD

This category is used for sites where human exposure to contaminated media may be occurring, may have occurred in the past, and/or may occur in the future, but the exposure is not expected to cause any adverse health effects.

This determination represents a professional judgement based on critical data which ATSDR considers sufficient to support a decision. This does not necessarily imply that the available data are complete, in some cases additional data may be required to confirm or further support the decision made.

Criteria:

Evaluation of available relevant information* indicates that, under site-specific conditions of exposure, exposures to site-specific contaminants in the past, present, or future are not likely to result in any adverse impact on human health.

*Such as environmental and demographic data; health outcome data; exposure data; community health concerns information; toxicologic, medical, and epidemiologic data; monitoring and management plans.

ATSDR Actions:

---

If appropriate, ATSDR will make recommendations for monitoring or other removal and/or remedial actions needed to ensure that humans are not exposed to significant concentrations of hazardous substances in the future. Actions on the recommendations may have occurred before the actual completion of the public health assessment.

The following health actions, which may be reommended in this category, are based on information indicating that no human exposure is occurring or has occurred in the past to hazardous substances at levels of public health concern. One or more of the following health actions are recommended for sites in this category:

• community health education
• health professional education
• community health investigation
• voluntary residents tracking system

However, if data become available suggesting that human exposure to hazardous substances at levels of public health concern is occurring, or has occurred in the past, ATSDR will reevaluate the need for any followup.

CATEGORY E: NO PUBLIC HEALTH HAZARD

This category is used for sites that, because of the absence of exposure, do NOT pose a public health hazard.

Criteria:

Sufficient evidence indicates that no human exposures to contaminated media have occurred, none are now occurring, and none are likely to occur in the future.

ATSDR Actions:

---

No public health actions are recommended at this time because no human exposure is occurring, has occurred in the past, or is likely to occur in the future that may be of public health concern.

APPENDIX D

CALCULATIONS OF RISK FOR EXPOSURE SITUATIONS ASSUMPTIONS AND FORMULAS

		Adult Assumptions			Child Assumptions
ED	Exposure Duration	7 years			6 years
BW	Body Weight	70 kg			15 kg
EF	Exposure Freq.	Varies			Varies
	Crawl Space Soils	5 days/year			12 days/year
IR	Inhalation Rate	20 m3/day			12 m3/day
IRW	Ingestion Rate-Water	2 L/day			1 L/day		Add 2L/d for VOCs due to volatiliation and inhalation
IRS	Ingestion Rat-Soil	100 mg/day			200 mg/day
Other Assumptions
FI	Fraction ingested	1 unitless			AD	Averaging Duration
AT	Averaging Time	365 days/year				---carcinogens 70 years ---noncarcinogens ED
Formulas
Intake Soil (mg/kg-day)=	Concentration Soil * IRS * EF * ED/(BW*AD*AT*1000*1000)			1000 * 1000 used to convert kg to mg
Intake Water (mg/kg/day)=	Concentration Water x IRW x EF * ED/(BW*AD*AT *1000)			1000 to convert ug to mg
Intake Air (mg/kg/da)y=	Concentration Air * IR*EF *ED/(BW*AD*AT)
Intake Air (Child and Adult) (mg/kg/day)=	[Concentration Air * IR*EF *ED/(BW*AD*AT) ]adult +[Concentration Air * IR*EF *ED/(BW*AD*AT) ]child
Cancer Risk =	Intake * CSF
Hazard Quotient=	Intake/Reference Dose

Note: Body weights, inhalation rates, and ingestation rates represent default values established by U.S. EPA (US EPA, 1989). In actuality, these values vary among individuals as documented in the Exposure Factors Handbook, Update to Exposure Factors Handbook (US EPA 1997a) EPA/600/8-89/043 - U.S. EPA May 1989. Nontheless, the default values established by EPA were used.

LIST OF ORAL CANCER SLOPE FACTORS AND REFERENCE DOSES(FROM IRIS UNLESS OTHERWISE INDICATED)

Chemical	Cancer Slope Factor (mg/kg/d)-1	Reference Dose (mg/kg-day)	Concentration (mg/kg)
alpha-chlordane	1.3	6.0e-05	31	assume alpha and gamma can be represented by chlordane mixture RfD.
gamma-chlordane	1.3	6.0e-05	26	assume alpha and gamma can be represented by chlordane mixture RfD.
DDE	0.34	5.0e-04	77	RfD assumed from DDT
DDD	0.24	5.0e-04	65	RfD assumed from DDT
DDT	0.34	5.0e-04	440
dieldrin	1.6	5.0e-05	54
methoxychlor	Not Cancer	5.0e-03	0.047
trichloroethene	0.011	6.0e-03	17	CSF from EPA, RfD from ATSDR intermediate oral RfD based on fetotoxic effects
tetrachloroethene	0.052	1.0e-02	0.8
carbon tetrachloride	0.13	0.0007
chloroform	0.0061	0.01
bromodichloromethane	0.062	0.02
boron	Not Cancer	1.00e-02	900
bromoform	0.0079	2.0e-02
dibromochloromethane	1.4	5.7e-05		Cancer slope from HEAST, RfD extrapolated from inhalation

LIST OF INHALATION CANCER SLOPE FACTORS AND REFERENCE DOSES (FROM IRIS UNLESS OTHERWISE INDICATED)

Chemical	Cancer Slope Factor (mg/kg/d)-1	Reference Dose (mg/kg-day)	Concentration (mg/kg)
Aldrin	17	3.0e-05	varies based on pesticide and house	RfD from EPA Region 9 extrapolated from oral
alpha BHC	6.3	3.0e-03		RfD assumed from beta BHC
beta BHC	1.8	3.0e-03		RfD from ATSDR and extrapolated from oral
delta BHC	6.3	3.0e-03		Inhalation cancer slope not available but assumed to be equivalent to alpha based on relative toxicity stated in ATSDR tox profile, RfD assumed from beta BHC.
gamma BHC - lindane	1.8	3.0e-04		RfD from EPA Region 9 extrapolated from oral
gamma-chlordane	1.3	6.0e-05		assume alpha and gamma can be represented by chlordane mixture. RfD from EPA Region 9 extrapolated from oral
gamma-chlordane	1.3	6.0e-05		assume alpha and gamma can be represented by chlordane mixture. RfD from EPA Region 9 extrapolated from oral
DDE	0.34	5.0e-04		Cancer Slope from CAL EPA, RfD assumed from DDT
DDD	0.24	5.0e-04		Cancer Slope from CAL EPA, RfD assumed from DDT
DDT	0.34	0.0005		RfD from EPA Region 9 extrapolated from oral
dieldrin	16	0.00005		RfD from EPA Region 9 extrapolated from oral
Endosulfan I	Noncancer	0.006		RfD from EPA Region 9 Preliminary Remediation Goals
Endosulfan II	Noncancer	6.00e-03		Assumed to be similar to Endosulfan-I
Endosulfan Sulfate	Noncancer	6.0e-03		Assumed to be similar to Endosulfan-I
Endrin	Noncancer	3.0e-03		From EPA Region 9 Preliminary Remediation Goals
Endrin aldehyde	Noncancer	0.003		Assumed to be similar to Endrin
Endrin ketone	Noncancer	3.0e-03		Assumed to be similar to Endrin
Heptachlor	4.6	5.0e-04		RfD from EPA Region 9 extrapolated from oral
Heptachlor epoxide	9.1	1.3e-05		RfD from EPA Region 9 extrapolated from oral
Methoxychor	Noncancer	5.0e-02		From EPA Region 9 Preliminary Remediation Goals
Toxaphene	1.1	No value available

GREEN ACRES MILITARY FAMILY HOUSING RISK ESTIMATES - CRAWL SPACE SOILS

	CHILDREN				ADULTS
Chemical	Estimated Cancer Exposure Dose (mg/kg/day)	Estimated Cancer Risk	Estimated Noncancer Exposure Dose (mg/kg/day)	Hazard Quotient	Estimated Cancer Exposure Dose (mg/kg/day)	Estimated Cancer Risk-Child	Estimated Noncancer Exposure Dose (mg/kg/day)	Hazard Quotient
alpha-chlordane	4.85e-07	-	5.66e-06	9.44e-02	6.07e-08	-	6.07e-70	1.01e-02
gamma-chlordane	4.07e-07	-	4.75e-06	7.91e-02	5.09e-08	-	5.09e-07	8.48e-03
DDE	1.21e-06	4.10e-07	1.41e-05	2.81e-02	1.51e-07	5.12e-08	1.51e-06	3.01e-03
DDD	1.02e-06	2.44e-07	1.19e-05	2.37e-02	1.27e-07	3.05e-08	1.27e-06	2.54e-03
DDT	6.89e-06	2.34e-06	8.04e-05	1.61e-01	8.61e-07	2.93e-07	8.61e-06	1.72e-02
dieldrin	8.45e-07	1.35e-06	9.86e-06	1.97e-01	1.06e-07	1.69e-07	1.06e-06	2.11e-02
methoxychlor	7.36e-10	-	8.58e-09	1.72e-06	9.20e-11	-	9.20e-10	1.84e-07
	Sum of Cancer Risks	4.35e-06	Hazard Index (Sum of Hazard Quotients)	5.83e-01	Sum of Cancer Risks	5.44e-07	Sum of Hazard Quotients	6.25e-02

OFF-BASE PRIVATE WELLS RISK ESTIMATES - GROUND WATER USE

	CHILDREN				ADULTS
Chemical	Estimated Cancer Exposure Dose (mg/kg/day)	Estimated Cancer Risk	Estimated Noncancer Exposure Dose (mg/kg/day)	Hazard Quotient	Estimated Cancer Exposure Dose (mg/kg/day)	Estimated Cancer Risk	Estimated Noncancer Exposure Dose (mg/kg/day)	Hazard Quotient
tetrachloroethene	1.32e-05	6.84e-07	1.53e-04	1.53e-02	1.88e-05	9.77e-07	4.38e-05	4.38e-03
trichoroethene	2.79e-04	3.07e-06	3.26e-03	5.43e-01	3.99e-04	4.39e-06	9.32e-04	1.55e-01
	Sum of Cancer Risks	3.76e-06	Hazard Index (Sum of Hazard Quotients)	5.59e-01	Sum of Cancer Risks	5.44e-06	Sum of Hazard Quotients	1.60e-01

GREEN ACRES MILITARY HOUSING RISK ESTIMATES -INHALATION TO INDOOR AIR PESTICIDES SAMPLE RESULTS^* HOUSE 205

	Children - 6 years/Adult 3 years		Adults - 9 years
Chemical	Estimated Noncancer Exposure Dose (mg/kg/day)	Hazard Quotient	Estimated Noncancer Exposure Dose (mg/kg/day)	Hazard Quotient
Aldrin	0.00e+00	0.0000	0.00e+00	0.0000
alpha BHC	1.04e-06	0.0003	1.64e-07	0.0001
beta BHC	0.00e+00	0.0000	0.00e+00	0.0000
delta BHC	0.00e+00	0.0000	0.00e+00	0.0000
gamma BHC - Lindane	1.04e-06	0.0035	1.64e-07	0.0005
alpha-chlordane	4.97e-05	0.2485	7.89e-06	0.0395
gamma-chlordane	7.25e-05	0.3624	1.15e-05	0.05753
DDE	5.18e-06	0.0104	8.22e-07	0.0016
DDD	2.07e-06	0.0041	3.29e-07	0.0007
DDT	8.28e-06	0.0166	1.32e-06	0.0026
dieldrin	2.07e-06	0.0414	3.29e-07	0.0066
Endosulfan I	0.00e+00	0.0000	0.00e+00	0.0000
Endosulfan II	1.04e-06	0.0002	1.64e-07	0.00003
Endosulfan Sulfate	0.00e+00	0.0000	0.00e+00	0.0000
Endrin	0.00e+00	0.0000	0.00e+00	0.0000
Endrin aldehyde	0.00e+00	0.0000	0.00e+00	0.0000
Endrin ketone	1.04e-06	0.0035	1.64e-07	0.0005
Heptachlor	5.18e-06	0.0104	8.22e-07	0.0016
Heptachlor epoxide	1.04e-06	0.0797	1.64e-07	0.0126
Methoxychor	1.04e-05	0.0021	1.64e-06	0.0003
Toxaphene	No RfD available
	Sum of Hazard Quotients	0.78		0.124

* Chemicalsthat were not detected or detected infrequently were treated as follows for the dose calculations:

• Aldrin's non-detects were treated as zero because it was not detected in any of the houses.
• alpha-BHC non-detects were treated as one-half of the detection limit because of it was detected in one house.
• beta and delta-BHC non-detects were treated as zero because they were not detected in any of the houses even though they are isomers and a contaminant of gamma-BHC (lindane) and lindane was detected in one house.
• gamma-BHC (lindane) non-detects were treated as one-half of the detection limit because of one detection.
• Endosulfan I non-detects were treated as zero because it was not detected in any of the houses.
• Endosulfan II non-detects were treated as one-half of the detection limit because it was detected in one house..
• Endosulfan sulfate non-detects were treated as zero because they were not detected in any of the houses even though it is a degradation product of endosulfan I and II and endosulfan was detected in one house.
• Endrin and endrin aldehyde non-detects were treated as zero because they were not detected in any of the houses.
• Endrin ketone non-detects were treated as one-half the detection limit because it was detected in one house. Endrin ketone is an impurity and degradation product of endrin but the one detection was not considered significant to treat endrin and endrin aldehyde as non-zero.
• Heptachlor was detected in seven houses so the detection limit or actual reported concentrations were used.
• Heptachlor epoxide non-detects were treated as one-half of the detection limit because it is a breakdown product of heptachlor even though heptachlor epoxide was not detected in any of the houses. Heptachlor was detected in seven houses.
• Methoxychlor non-detects were treated as one-half the detection level because it was detected in one house.
• Toxaphene was not detected but the detection limit was the highest of the chemicals analyzed for at 0.0001 g/kg. Toxaphene is not necessarily used as a pesticide but may be mixed in with lindane and DDT. The detection limits were high compared to the other pesticides analyzed for. High detection levels may mask the presence of toxaphene. Because a reference dose is not available, toxaphene could not be calculated in the hazard quotients and was treated as zero..

APPENDIX E

AMOUNT OF WATER PRODUCED FROM THE WATER TREATMENT PLANT AND PRODUCTION WELLS MARCH AIR FORCE BASE 1964-1984

Year	Water from Water Treatment Plant x1000	Percent of Total	Water from Wells x1000	Percent of Total
1964	393963	63.3	228685	36.7
1965	616736	86.2	98450	13.8
1966	557726	76.9	167305	23.1
1967	544866	73.3	198456	26.7
1968	412882	53.3	361914	46.7
1969	343028	47.8	373890	52.2
1970	292933	39.3	453247	60.7
1971	296446	43.0	393455	57.0
1972	349917	51.5	329624	48.5
1973	334524	55.5	268039	44.5
1974	373585	64.5	205454	35.5
1975	305828	55.9	241500	44.1
1976	323799	60.2	214520	39.9
1977	124155	25.0	372083	75.0
1978	170093	34.9	317489	65.1
1979	164764	31.4	359677	68.6
1980	301300	56.7	230369	43.3
1981	341464	58.9	237866	41.1
1982	365965	68.1	171316	31.9
1983	332063	62.1	202688	37.9
1984	373572	72.0	145335	28.0
	Avg	56.2		43.8
	Min	25.0		13.8
	Max	86.2		75.0

APPENDIX F

LIST OF CONSTITUENTS ANALYZED FOR IN DRINKING WATER SOURCES AND TAP WATER 1978-1983

1978-1981	1982	1983
Ammonia Nitrate Cyanide Arsenic Cadmium Chromium Copper Lead Mercury Nickel Selenium Silver Zinc Calcium Magnesium Potassium Sodium Boron Chloride Fluoride Residue Filterable(TDS) Specific Conductance Sulfate Bicarbonate Carbonate Alkalinity Total Hardness Trichloroethene	Constituents in Column 1 Plus Bromoform Bromodichlormethane Carbon tetrachloride Chloroform Dibromochloromethane 1,2-Dichloroethane Methylene Chloride          (Dichloromethane) Tetrachloroethene (PCE) 1,1,1-Trichloroethane Trichloroethyene (TCE) 1,2-Dichloroethene Radium-226 Gross Alpha	Constituents in Column 1 Plus Carbon tetrachloride Chloroform Methylene chloride tetrachloroethene (PCE) 1,1,1-Trichloroethane Trichloroethene Trihalomethanes PCBs BHC Isomers Chlordane DDT Isomers Dieldrin Endrin Heptachlor Heptachlor epoxide Lindane Methoxychlor Toxaphene 2,4-D 2,4,5-TP (Silvex) 2,4,5-T PCBs

APPENDIX G

PAST CONCENTRATIONS OF VOLATILE ORGANIC COMPOUNDS AND BORON IN DRINKING WATER SOURCES MARCH AIR FORCE BASE 1978-1983

Date/ Constituent	Well No.1	Well No. 3	Well No. 4	Well No. 5	Well No. 6	Water Treatment Plant	Distribution Line at Base Hospital	Blank	Reference/Notes
Feb 1978 Trichloroethene	21.4	57.6	< 1.5	< 1.5	< 1.5	--			Gibson, 1979
May 1978 Boron	<500	<500	<500	800.0	900.0	<500
Aug 1979 Trichloroethene	28.8			< 1.5	< 1.5	--			Gibson, 1979
Boron	4600			900.0	1800.0		<500		Bldg 24242 - <500 g/L Boron
April 1980 Trichloroethene				<1.0	<1.0				Gibson, 1980
January 1981 Trichloroethene					<0.5				USAF, Armstrong Labs, January 1981
Boron					850.0				USAF, Armstrong Labs, January 1981
February 1981 Trichloroethene					<0.5				USAF, Armstrong Labs, February 1981
Boron				1100.0					USAF, Armstrong Labs, February 1981
March 1981 Trichloroethene				<0.5	<0.5				USAF, Armstrong Labs, March 1981
May 1981 Trichloroethene				<0.1	<0.5				USAF, Armstrong Labs, May 1981
Boron				2750 and 800	1050.0, 1200, and 1000				USAF, Armstrong Labs, May 1981
Dec 1981 Trichloroethene	16								Gray, 1981
Sept 1982 Trichloroethene	31.6				< 0.1	< 0.1	<0.1	<0.1	Brooks AFB, 1982
Carbon Tetrachloride	9				<0.1	0.3	<0.1	<0.1	Brooks AFB, 1982
Chloroform	10.6				<0.1	6.9	31.1	<0.1	Brooks AFB, 1982
Methylene chloride	<0.2				0.4	<0.2	0.5	<0.3	Brooks AFB, 1982
Tetrachloroethene	1.5				<0.1	<0.1	0.4	<0.1	Brooks AFB, 1982
Bromoform	<0.2				<0.2	<0.2	10.3	6.1	Brooks AFB, 1982
Bromodichloro-methane	<0.1				<0.2	0.5	21.9	0.3	Brooks AFB, 1982
Dibromochloro-methane	<0.1				<0.1	<0.1	16.2	0.9	Brooks AFB, 1982
Boron	600				900.0	2300.0	500.0		Brooks AFB, 1982
June 1983 Trichloroethene	66						<0.2		Fukumoto, 1983a. Hossain 1983a.
July 1983 Trichloroethene							0.8		Fukumoto, 1983 Hossain 1984. Well No. 1 used during sampling of hospital.
Carbon Tetrachloride
Chloroform	15.7				1.8	3.5	16.7
Methylene chloride
Tetrachloroethene
Bromoform	<0.2				<0.2	<0.2	38.4
Bromodichloro-methane	5.6				<0.1	<0.1	11.2
Dibromochloro-methane	<0.1				<0.1	<0.1	13.5
Boron
August 1983 Trichloroethene	33.0				<0.1	<0.1	2.6 Dining Hall 1.9 Barber Shop		Glancy, Sept 1983 Well No. 1 used during this sampling of hospital
Carbon Tetrachloride	2.8				<0.1	<0.1	<0.1
Chloroform	1.6				<0.1	13.0	<0.1
Methylene chloride	<0.2				<0.2	<0.2	<0.2
Tetrachloroethene	0.6				<0.1	<0.1	<0.1
Bromoform	<0.2				<0.2	18.9	<0.2
Bromodichloro-methane	<0.1				<0.1	5.8	<0.1
Dibromochloro-methane	<0.1				<0.1	9.8	<0.1
Boron	?				?	?	?
Sept 1983 Trichloroethene	33.6				<0.1	<0.1	<0.1		Analytical Data: Hossain, 1983b Flow Data: Fukumoto, 1983
Carbon Tetrachloride	4.3				<0.1	<0.1	<0.1
Chloroform	2.1				<0.1	8.2	32.4
Methylene chloride
Tetrachloroethene	1.1				<0.1	<0.1	<0.1
Bromoform						<0.1	27.8
Bromodichloro-methane						<0.1	18.6
Dibromochloro-methane						<0.1	0.6
Boron	<500				1300.0	NR	900.0
	Well discontinued in November 1983								Brooks AFB 1984.

APPENDIX H

CONCENTRATIONS OF TRICHLOROETHENE AND TETRACHLOROETHENE IN OFF-BASE PRIVATE WELLS AND BPW-6 FROM 1986 TO 1990 MARCH AIR FORCE BASE

	Well Owners Ids and Well Water Concentrations of Trichloroethene and Tetrachloroethene1 (g/L)
Date Sampled	BPW-6	PPW2	PPW1	PPW3	PPW4	PPW5	PPW6
March 10, 1986	ND2	-	-	-	-	-	-
March 14, 1986	-	ND	3.9	0.8	-	-	-
April 7, 1986	-	-	-	-	ND	-	-
April 8, 1986	ND	-	-	-	-	-	-
May 1, 1986	-	< 0.12 PCE <0.03	6.2 PCE <0.03	15 PCE 0.14	<0.12 PCE <0.03	-	-
			Provided bottled water sometime between June 1986 and August 1989.3
July 2, 1986	5.0	ND	0.1	8.9 0.2	ND
August 4, 1986	ND	ND	ND	ND	ND	-	-
Sept.. 3, 1986	ND	ND	4.3 and 4.1	8.4	ND	-	-
October 6, 1986	4.1	4.4	4.4	5.4	6.2	-	-
November 5, 1986	ND	ND	4.8	7.1	ND PCE 0.7	-	-
December 1, 1986	ND	-	ND	-	-	-	-
January 7, 1987	ND	ND	-	-	ND	-	-
February 25, 1987	ND	ND	4.4	1.1	ND	-	-
March 14, 1987	ND	ND	4.2	7.2	ND	-	-
March 23, 1987	-	-	-	6.9	-	-	-
April 15, 1987	ND	ND	6.2	8.9	ND	-	-
May 5, 1987	ND	ND	5.5	9.3	ND	-	-
June 10, 1987	ND	ND	5.0	6.9	ND	-
July 23, 1987	ND	ND	3.7	5.1	ND PCE 0.6	-	-
August 13, 1987	ND	0.7 PCE 0.8	5.5	6.8	ND	-	-
September 23, 1987	ND	ND	ND	6.0	ND	-	-
October 20, 1987	ND	ND	ND	3.7	ND	-	-
November 25, 1987	ND	ND	1.5	4.5	ND	-	-
December 16, 1987	ND	ND	4.0	4.9	ND	-	-
January 20, 1988	ND	ND	4.2	3.9	ND	-	-
February 24, 1988	ND	ND	3.2	4.9	ND	-	-
March 9, 1988	ND	ND	3.4	ND	ND	-	-
April 29, 1988	ND	ND	ND	5.7	ND	-	-
June 14, 1988	ND	ND	4.7	4.9	ND	ND	-
July 11, 1988	-	-	-	-	-	15.0	-
July 28, 1988	ND	ND	5.6	6.0	ND	12.4	-
November 1, 1988	ND	ND	5.9	-	0.2	17.0	9.0
March 28, 1989	-	-	-	-	-	-	15.0
June 15, 1989	ND	ND	5.0	-	ND	17.0	13.0
			Unknown when or if Tate hooked up to water main.4	Property sold sometime before August 1989 and became vacant.4		Hooked up to water main sometime around August 1989.4
January 11, 1990	ND	ND	4.4 and 3.7	-	ND	-	-

Notes:
1. Villeneuve, 1995.
2.    ND Indicates a non-detect for PCE and TCE unless otherwise indicated.
       -- indicates that a sample was not taken
       When a concentration of TCE is presented and one for PCE is not, PCE was sampled for but not detected.
3. Fletcher 1986.
4. Bachand 1989.