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1. ATSDR > Public Health Assessments & Consultations

PETITIONED PUBLIC HEALTH ASSESSMENT

AIR QUALITY
WALLINGFORD, NEW HAVEN COUNTY, CONNECTICUT

CONCLUSIONS

The Air Quality Petition Site, which is the Town of Wallingford, Connecticut, is considered an indeterminate public health hazard due to the lack of data on the levels of contaminants in ambient air. Relatively large amounts of pollutants are being released from automotive, industrial, and other sources in the Wallingford area. There is a potential for exposures of health significance based on the amounts of contaminants, and the presence of conditions that would maximize pollutant levels. Those conditions are that Wallingford is in a valley and temperature inversions occur. The potential for exposures of health significance could be evaluated by long-term monitoring of the air in Wallingford.

The data available to ATSDR suggest that the complaints expressed by SPARROW and other Wallingford citizens are limited to a small portion of the 40,000 or more residents of Wallingford. Data were insufficient to link the complaints with any specific cause. However, there is a possibility that the reporting individuals are more sensitive to environmental contaminants than the general population.

The number of cases of cancer in Wallingford from 1964-1988 is what would be expected based on the rate for Connecticut, except for buccal cancer and multiple myeloma. Numbers of those cases were lower than expected compared to rates for the State.

The toxicologic data reviewed indicate that the chemicals in Wallingford's air could cause many of the symptoms listed in the complaint logs kept by SPARROW members. However, nearly all of the symptoms would occur only after high levels of exposure. There is no indication from the limited air monitoring studies that high levels of exposure have occurred or are occurring.

RECOMMENDATIONS

During the development of this public health assessment, ATSDR determined that the following activities are necessary to further clarify and/or quantify the public health hazard at this petition site.

1. A more thorough characterization of Wallingford air quality should be undertaken. To implement this, a panel of interested and knowledgeable representatives from the Connecticut Departments of Health Services and Environmental Protection, the Town of Wallingford, SPARROW and/or other concerned citizens, the major industries in Wallingford, and the U.S. Environmental Protection Agency should be convened. ATSDR would be available, if requested, to assist the panel. This panel could help define the scope of such monitoring, and possibly share resources.



2. The panel should address, as a minimum, the following:



1. the number and types of parameters to be sampled that would provide meaningful insight into Wallingford's air quality;



2. numbers, types, and locations of sampling stations to be included;



3. sources of funds, labor, and other resources needed to carry out the program; and



4. project milestones and responsibilities for report generation and data interpretation.



3. Minimally, the monitoring program should include a network of air monitors located strategically within the Town and operated for at least a full year to reflect the full range of seasonal meteorologic conditions affecting migration and dispersion of air pollutants generated near or within the Wallingford air basin.



4. Complete local meteorologic data for the area should be recorded throughout the duration of air monitoring.



5. The baseline monitoring program should also include analysis for ambient air parameters (ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, particulate matter, lead, other metals, and inorganic chemicals) to serve as indicators of general air quality in Wallingford. That information would be useful for better understanding the effects of local terrain and meteorology on the dispersion or concentration of area air pollutants, and might suggest areas warranting closer review. Such review could include specific point-of-exposure monitoring to support further, more detailed analysis of the health implications of airborne pollutant exposures. That type of data could also be compared with similar data for other urban areas both within and outside the State of Connecticut.



6. A mobile monitoring program should be considered to better understand the nature and spatial distribution of organic air pollutants in the city. The array of organic compounds selected for review should be representative of industrial, commercial, residential, and automotive emissions.



7. If exposures of health significance are identified in the monitoring program suggested here, a symptom\prevalence or other appropriate epidemiologic study is suggested to determine the impact of those exposures.

The Air Quality Petition Site, which is the Town of Wallingford, Connecticut, has been evaluated by the ATSDR Health Activities Recommendation Panel (HARP) for appropriate followup with respect to health activities. Because of the potential for exposure to airborne contaminants, ATSDR is considering a program to educate the community about the health effects and sources of air pollution. Studies of health effects possibly due to airborne contaminants are not being considered at this time, because of the lack of air monitoring data adequate for determining exposure levels. However, if data become available suggesting that human exposure has occurred or is occurring, ATSDR will reevaluate this site for any additional indicated follow-up.

Public Health Actions

Based on the data evaluated and the recommendations made by HARP, the following Public Health Action will be taken.

ATSDR will coordinate the convening of the panel recommended previously.

Public Comments

The public health assessment for the Air Quality Petition site, Wallingford, Connecticut was available for public review and comment from July 20 through August 18, 1992. A summary of the comments received can be found in Appendix Four.

PREPARERS OF REPORT

Harvey Rogers
Environmental Engineer
Remedial Programs Branch

John R. Crellin, Ph.D.
Environmental Health Scientist
Remedial Programs Branch

ATSDR REGIONAL REPRESENTATIVE

Louise House
Senior Public Health Advisor
ATSDR Region I

REFERENCES

1. Letter: Request for Health Assessment. From PD Galbraith (CDHS) to BL Johnson (ATSDR), December 15, 1987.



2. Letter: Support of Galbraith Letter. From MG Fritz (Connecticut State Representative) to BL Johnson (ATSDR), January 11, 1988.



3. Letter: Request for Health Assessment. From BA Morrison (Congressman) to BL Johnson (ATSDR), June 5, 1989.



4. Letter: Inquiry about Health Assessment. From JI Lieberman (U.S. Senator) to BL Johnson (ATSDR), May 18, 1989.



5. Town of Wallingford Service Directory, 1990.



6. Letter: Review of CDHS Activities regarding Wallingford. From PD Galbraith (CDHS) to KJ Wagener (Connecticut Council of Environmental Quality), June 5, 1985.



7. Trip Report: Attend Public Meeting concerning Air Quality Site, Wallingford, Connecticut, July 6-7, 1989. From JE Abraham (ATSDR) to BL Johnson (ATSDR), July 24, 1989.



8. Trip Report: Site Visit for Air Quality Health Assessment, Wallingford, Connecticut, September 4-7, 1990. From JR Crellin and HW Rogers (ATSDR) to BL Johnson (ATSDR), October 17, 1990.



9. Connecticut Department of Health Services. Estimated Populations in Connecticut as of July 1, 1989. CDHS, Hartford, CT, Undated.



10. Record of Call: H Rogers (ATSDR) to J Rosofsky (Water Quality, Wallingford), October 12, 1990.



11. National Pollution Discharge Elimination System (NPDES) permits for Wallingford, CDEP files.



12. Memorandum: Investigation of a Cluster of Gastrointestinal Illnesses in Wallingford. From PJ Checko and G Cooper (CDHS) to J Hadler (CDHS), June 26, 1984.



13. Memorandum: Symptoms of Citizens near American Cyanamid Plant in Wallingford. From B Toal (CDHS) to PD Galbraith (CDHS), October 23, 1984.



14. Memorandum: Review of Health Hotline Information from Wallingford for SPARROW. From D Denis and B Toal (CDHS) to PD Galbraith (CDHS), December 19, 1984.



15. Memorandum: American Cyanamid Citizen Complaints. From NJ Beloin (EPA) to S Perkins (EPA), March 21, 1985.



16. Report: Brief Review of Wallingford Symptom Log. By DC Middleton (ATSDR), undated.



17. Letter: Description of Symptoms and Suspected Chemicals. From JA Nuzzo to A Siniscalchi (CDHS), May 18, 1984.



18. Connecticut Department of Health Services. Statistical Summary of Connecticut Infants All Races and Non-White, 1982-84 and 1985-87: Infant Mortality, Low Birthweight, Teenage Mothers. Health Surveillance and Planning Division/CDHS, Hartford, CT. Undated.



19. Air discharge permits for Wallingford, CDEP files.



20. Trip Report: EPA Workshop, Identifying Toxic Hotspots using the Toxic Release Inventory, September 25-26, 1990. From S Rodenbeck (ATSDR) to BL Johnson (ATSDR), October 3, 1990.



21. U.S. Environmental Protection Agency. Toxic Chemical Release Inventory (TRI) Data for 1987 and 1988. In, Hazardous Substance Database (HSDB), National Library of Medicine (computer database), 1990.



22. York Services Corporation. "Ambient Air Quality Evaluation, Town of Wallingford, Connecticut", December 4, 1989.



23. Lilly FW, "Ambient Monitoring for Airborne Organics in the Vicinity of American Cyanamid, Inc., Wallingford, Connecticut", USEPA Region I, August 2, 1984.



24. Lilly FW, "Ambient Monitoring for Airborne Organics in the Vicinity of American Cyanamid, Inc., Wallingford, Connecticut", USEPA Region I, December 21, 1984.



25. TRC Environmental Consultants, Inc. "Air Monitoring Program for Chemical Exposures in the Wallingford Area", for American Cyanamid, August 20, 1984.



26. Lilly FW, "Ambient Monitoring for Airborne Organics in the Vicinity of American Cyanamid, Inc., Wallingford, Connecticut", USEPA Region I, June 19, 1985.



27. American Cyanamid air permits, CDEP files.



28. Laboratory report for J Doolittle, Charcoal tubes, residential followup to odor complaints, June 26, 1985.



29. Chronology, Air Sampling Events in Wallingford, Connecticut, 1984 - 1985. CDEP, undated.



30. Memorandum: Hydrogen sulfide from Wallingford Dump. From B Toal (CDHS) to P Galbraith (CDHS) w/attachments, June 12, 1985.



31. O.H. Materials Corporation, "Results of Air Monitoring Studies Conducted at American Cyanamid, Polymer Products Division, Wallingford, Connecticut", August 3, 1988.



32. Parallel Air Monitoring Report, Conrail and American Cyanamid, July 1988.



33. CDEP, Review of Conrail Incident at American Cyanamid, w/attachments, October 21, 1988.



34. American Cyanamid, Fenceline Air Monitoring Report, October/November 1988.



35. Letter: American Cyanamid Wallingford Air Emissions, w/attachments. From L Bruckman (CDEP) to M Mushinsky (State of CT. Representative to General Assembly), July 27, 1989.



36. CDEP. Leachate & Wastewater Discharge Sources Inventory - South Central Coast Basin, 1988.



37. Map: Leachate and Wastewater Discharge Sources for the South Central Coast Basin, CDEP, March 1989.



38. Map: Water Quality Classifications for the South Central Coastal Basin, CDEP, April 17, 1985.



39. Map: Water Quality Classifications Map of Connecticut, CDEP, 1987.



40. Map: Community Water Systems in Connecticut - 1984 Inventory, CDEP, 1986.



41. Wallace LA. The Total Exposure Assessment Methodology (TEAM) Study: Summary and Analysis: Volume 1. EPA/600/6-87/002a. Washington, DC. 1987.



42. Memorandum: Comprehensive Groundwater Monitoring (AC) Evaluation - Summary or Results, From MW Bamberger (CDEP) to Groundwater monitoring file, September 25, 1989.



43. Record of Call: H Rogers (ATSDR) to T Iott (CDEP, Bureau of Water Management), October 12, 1990.



44. American Lung Association. Pollution Primer. American Lung Association. 1978.



45. Ferris BG. Effects of air pollution on school absences and differences in lung function in first and second graders in Berlin, New Hampshire, January 1966 to June 1967. Am Rev Respir Dis 1970; 102: 591-606.



46. Samet JM, Speizer FE, Bishop Y, Spengler JD, Ferris BG. The relationship between air pollution and emergency room visits in an industrial community. J Air Pollut Control Assoc 1981; 31: 236-240.



47. Ayres SM, Evans RG, Buehler ME. Air Pollution: A Major Public Health Problem. CRC Critical Reviews in Clinical Laboratory Sciences. 1972.



48. Schwartz J. Lung function and chronic exposure to air pollution: a cross-sectional analysis of NHANES II. Enviro Res 1989; 50: 309-321.



49. Letter: Evaluation of March 21, 1985 EPA Memo by EI White. From DR Brown (Northeastern University) to L Gokey (CDHS), July 9, 1987.



50. Vyner HM. Invisible Trauma. The Psychosocial Effects of the Invisible Environmental Contaminants. D.C. Heath, Lexington, MA. 1988.



51. National Institute for Occupational Safety and Health. Pocket Guide to Chemical Hazards. Atlanta, Georgia: National Institute for Occupational Safety and Health (DHHS/NIOSH/85-114), 1989.



52. Industrial Hygiene Unit. Hydrogen Sulfide - the Invisible Killer. Saudi-Aramco Oil Company. Dhahran. 1983.



53. State of Connecticut, "Hazardous Air Pollutants", Section 22a-174-29, PP. 29-1 to 29-38, February 1989.



54. National Library of Medicine. Hazardous Substance Database (HSDB). Washington, D.C.: National Library of Medicine (computer database), 1990/1991.



55. U.S. Environmental Protection Agency. Integrated Risk Information System (IRIS). Washington, D.C.: U.S. EPA (computer database), 1990/1991.



56. Lewtas J. Experimental evidence for the carcinogenicity of air pollutants. In, Tomatis L, ed. Air Pollution and Human Cancer. Springer-Verlag. Berlin. 1990.



57. Agency for Toxic Substances and Disease Registry. Toxicological Profile for Methylene Chloride. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry (ATSDR/TP-88/24), 1989.



58. Agency for Toxic Substances and Disease Registry. Toxicological Profile for Benzene. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry (ATSDR/TP-88/03), 1989.



59. Agency for Toxic Substances and Disease Registry. Toxicological Profile for Toluene. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry (ATSDR/TP-89/23), 1989.

DOCUMENTS REVIEWED BUT NOT CITED

APPENDIX ONE-DATA TABLES FOR AIR QUALITY PUBLIC HEALTH ASSESSMENT

TABLE 1 - CANCER INCIDENCE IN WALLINGFORD, CONNECTICUT FOR 1964 - 1988

SITE OF CANCER	TOTAL OBSERVED CANCERS	TOTAL EXPECTED CANCERS	SIR3
Bladder	153	168	0.92
Bone/Connective Tissue	36	30	1.21
Breast	533	517	1.03
Buccal	92	113	0.83*
Cervical1	202	200	1.00
Brain & Other CNS	59	62	0.92
Colon	365	389	0.93
Kidney	88	76	1.19
Leukemia	100	94	1.09
Lung	459	442	1.03
Lymphoma	101	109	0.94
Melanoma & Other Skin	72	82	0.89
Multiple Myeloma	23	34	0.69*
Ovary1	80	74	1.03
Pancreas	98	91	1.10
Prostate2	233	252	0.92
Rectum	193	179	1.01
Stomach	95	105	0.92
Testis2	20	17	1.12
Thyroid & Endocrine	29	34	0.86
Uterus1	115	116	0.98
ALL CANCERS	3224	3386	0.98

EXPLANATION OF TABLE 1

1=Female only; 2=Male only; 3=Standardized Incidence Ratio (SIR); This ratio is the standardized incidence rate for Wallingford divided by the rate for Connecticut. * = SIR is statistically significantly low at p = 0.05; Number of cases for each cancer site was provided by Connecticut Department of Health Services (CDHS) from data in the Connecticut Tumor Registry. CDHS also provided the population figures used to calculate the age-adjusted incidence rates. Population data from Wallingford and Connecticut for 1975 were used in the various calculations. All analyses were done by staff of the Agency of Toxic Substances and Disease Registry (ATSDR) using a Lotus 123^R program provided by CDHS. This program calculates expected numbers of cases, age-adjusted incidence rates, and whether the results are higher or lower than what would be expected by chance.

TABLE 2 - TRI AIR EMISSIONS
Wallingford Connecticut, 1987,1988
Highest Reported Values for Either Year in Pounds/Year

Range -	1000 - 10,000	10,000 - 100,000	>100,000
Chemical
acrylonitrile		x (AC)
dichloromethane		x (AC,UL,BA)	x (AL)
ethyl acrylate	x (AC)
ethylene glycol	x (AC)
formaldehyde		x (AC)
hydrogen fluoride	x (AL)
melamine	x (AC)
methanol			x (AC)
methyl acrylate		x (AC)
methyl methacrylate			x (AC)
n-butyl alcohol			x (AC)
nitric acid	x (AL)
styrene	x (AC)
tetrachloroethylene*	x (BA)
toluene			x (AC)
1,1,1 trichloroethane		x (AL,AC,AM,CK)
xylene	x (AC)

AC - American Cyanamid,
AL - Allegheny Ludlum,
AM - Ametek,
BA - BASF,
CK - C&K/Unimax, Inc.,
UL - Ulbrich Stainless Steel

Source: TRI data²¹ and York Report for Wallingford²²

* It should be noted that dry cleaners can be a significant source of tetrachloroethylene, but are not presently required to report to the TRI data base.

TABLE 3 - AC Landfill Ambient Air Study Results done by EPA in August 1984
(parts per billion - ppb)

Sample Location	#1	#2	#3	#4
Compound
Benzene	6	5	8	2
Toluene	50	17	10	6
Xylenes	66	7	7	NR
Tetrachloroethylene	NR	NR	3	NR

NR - not reported
Other tentatively identified compounds at levels below 0.5 ppb were also reported for this study.

TABLE 4 - TRC Ambient Air Study
June - July, 1984
(parts per billion - ppb)

Range	Instantaneous	10 Min. Average
Chemical
acrylonitrile	0 - 55	BDL
benzene	0 - 120	NR
ethyl acrylate	0 - 250	32 - 50
methyl methacrylate	0 - 350	BDL
styrene	0 - 550	BDL - 250
toluene	0 - 750	10 - 410
formaldehyde	0 - 235*

BDL - below detection limit, NR - not reported

* Formaldehyde was measured only on AC property because the 110 volt power source required to run the analytical equipment used for formaldehyde was not available at the other sampling locations. Sample times were from 3.65 to 21.8 hour.

TABLE 5 - Indoor Air Study
Wallingford, 1985
Organic Chemicals in ppb

	Range	MAAC*	HLV+
benzene	<0.5 - 15.51	50	--
pentane	<1.0 - 293.9**	2400	11,700
1,1,1-trichloroethane	<1.0 - 421.6	7000	7000
heptane	<3.0 - 21.62	1700	1750
toluene	1.15 - 20.5	2000	2000
xylene	<1.0 - 5.84	2000	2000
butyl acetate	<1.0 - 8.81	3000	3000
ethyl acrylate	<1.0 - 1.68	N/A	100
hexane	<1.0 - 5.03	1000	1000
ethyl benzene	<1.0	2000	2000

* Maximum allowable ambient concentration (MAAC) proposed by State in 1985 for 8-hour exposure.
+ Hazard limiting value (HLV), 8-hour exposure, Connecticut, Feb. 1989
      (where more than one isomer is listed, lowest value is shown here)⁵³
** could be greater than value shown

The MAAC and HLV values are included for comparative purposes. They are based on occupational exposure levels and may not represent permissible exposure levels for all individuals.

TABLE 6 - Indoor Air Study
Wallingford, 1985
Metals in micrograms/cubic meter of air(ug/m³)

	Range	MAAC
Sodium	3.5 - 13.5	40
Barium	<0.05 - 2.7	10
Calcium	1.2 - 5.6	40
Zinc	1.2 - 2.8	20
Copper	0.2 - 0.6	20
Magnesium	2.3 - 2.8	200
Tin	<0.03 - 0.1	40
Aluminum	0.2 - 0.3	200
Molybdenum	<0.03 - 0.1	100

Other metals, including lead, were checked in this study, but were below detectable levels.

TABLE 7 - AC Incinerator Emissions in 1974 compared to 1974 Connecticut Standard

	Applicable Standard	Measured Emission
Particulate	0.08 gr/dscf	0.00006 gr/dscf*
Sulfur oxides	500 ppm	11 ppm
Nitrogen oxides	700 ppm	84.7 ppm
Hydrocarbons	3 lb/hr	0.99 lb/hr

* grains per dry standard cubic foot corrected to 12 percent carbon dioxide.

TABLE 8 - AC Fenceline Survey
Fall, 1988
Results in ppm

	Range	Ball field maximum
Formaldehyde	<0.01 - 0.04	0.02
AN (acrylonitrile)*	<0.01 - <0.02	---**
Toluene	<0.01 - 0.16	0.03
Styrene	ND - <0.01	---**
MMA (methyl methacrylate)*	<0.01 - 0.02	0.01
EA (ethyl acrylate)*	ND - <0.001	---**
Butanol	ND - 2.1	---**
Butyl acetate	<0.003 - 0.01	---**
Hexane	<0.004 - 0.02	0.02

* Chemical in parentheses assumed from acronym.
** Below quantifiable limit

TABLE 9 - POTENTIAL HEALTH EFFECTS FROM CHEMICALS POSSIBLY PRESENT IN THE OUTDOOR OR INDOOR AIR OF WALLINGFORD, CONNECTICUT

CHEMICAL	EN	NM	RE	GI	BE	SK	CV	CA	OEL PPM	REF
Acrylonitrile	X	X				X		PC	2	51,54-6
Dichloromethane1	X	X				X	X	PC	500	51,54-7
Benzene	X	X	X	X		X	X	HC	1	51,54-6,58
Butyl Acetate2	X		X			X			150	51,54
Ethyl Acrylate	X		X			X			5	51,54
Ethyl Benzene2	X	X	X			X			100	51,54
Ethylene Glycol		X		X		X	X		50	51,54-5
Formaldehyde	X		X			X		PC	1	51,54-6
Heptane2		X	X			X			85	51,54
Hexane2	X	X	X	X		X			50	51,54
Hydrogen Fluoride	X		X	X		X			3	51,54
Melamine		X				X			ND	54
Methanol	X	X		X	X				200	54-5
Methyl Acrylate	X		X			X			10	51,54
Methyl Methacrylate	X	X	X		X	X			100	51,54
Nitric Acid	X		X	X		X			2	51,54
n-Butyl Alcohol	X	X	X			X			50	51,55
Styrene	X	X	X		X	X		PC	50	51,54-6
PCE3	X	X	X	X	X			PC	50	51,54-5
Toluene	X	X			X	X			100	51,54-5,59
1,1,1-TCA4	X	X			X				350	54,55
Xylenes	X	X		X		X			100	51,54-5

1 = also known as methylene chloride
2 = found only in indoor air study (Table 6)
3 = PCE (perchloroethylene) is another name for tetrachloroethylene.
4 = 1,1,1-TCA is 1,1,1-trichloroethane
ND = No data was available for this parameter.

Explanation of the Headings for Table 9

For each heading, an X means that there are animal and/or human studies that indicate that this chemical can affect this organ system.

EN = Irritation or damage to the eye, nose, and/or throat.

NM = This chemical can affect the nervous system and/or muscles. Effects can include headaches, dizziness, weakness, confusion, muscle twitching, and loss of coordination.

RE = The respiratory system can be affected. Effects can include shortness of breath; wheezing; damage to lung, bronchial, or tracheal tissue; and water in the lung (edema).

GI = The stomach, and small and large intestine (gastrointestinal tract) can be affected. Symptoms can include nausea, vomiting, diarrhea, pain, and cramps.

BE = This chemical can affect behavior. Symptoms can include temporary or permanent loss of memory, insomnia, sleep disturbances, depression, and nightmares.

SK = The skin can be affected. Effects can include irritation, rashes, drying, and loss.

CV = The heart, blood vessels, and blood can be affected. Effects can include increased and/or irregular heart rate, heart damage, vasoconstriction (tightening of the blood vessels), and decreased production of blood.

CA = This chemical has been classified as a carcinogen. HC indicates that it is strongly linked with cancer in humans based on human studies. PC indicates the chemical has been classified as a probable human carcinogen based on animal studies and few or no human data.

OEL = Occupational Exposure Limit. This is the lowest permissible airborne exposure level for workers expressed in parts per million (PPM). It is provided for comparisons of the relative toxicity of chemicals.

REF = References used to provide the information on this chemical.

APPENDIX TWO-SUMMARY OF SYMPTOMS REPORTED IN COMPLAINT LOGS SUBMITTED TO THE CONNECTICUT DEPARTMENT OF HEALTH SERVICES BY RESIDENTS OF WALLINGFORD, CONNECTICUT⁽¹⁾

REPORTED SYMPTOMS

Typically, many of the symptoms are experienced in conjunction with each other in patterns. The behavioral symptoms may have appeared for years in children and sloughed off as "just as they are". The older children's reaction is even more subtle.

SUSPECT CHEMICALS

Toluene

Ethyl Benzene

Butanol

Xylene

Methyl Ethyl Ketone

Mixed Xylenes

Acrylonitrile

Methyl Methacrylate

The chemicals most suspect would be those which would produce a narcotic effect.

APPENDIX THREE-FIGURES 1 AND 2 FOR THE AIR QUALITY PUBLIC HEALTH ASSESSMENT

Figure 1. Detailed Site Map

Figure 2. Town of Wallingford Map

APPENDIX FOUR-RESPONSE TO PUBLIC COMMENTS

COMMENTS RECEIVED ON THE AIR QUALITY PUBLIC HEALTH ASSESSMENT

The Air Quality Public Health Assessment was available for public review and comment from July 20, 1992 through August 18, 1992. The Public Comment Period was announced in local newspapers. Copies of the public health assessment were made available for review at the Wallingford Public Library, and the Program Planning Office of the Town of Wallingford. In addition, the public health assessment was sent to 11 individuals or organizations who had requested that they receive copies. Comments were received from one individual, a state representative, and the Town of Wallingford.

Comments and responses are summarized below. The comment letters can be requested from ATSDR through the Freedom of Information Act.

Table of Contents

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