Skip directly to search Skip directly to A to Z list Skip directly to site content

PUBLIC HEALTH ASSESSMENT
FORMER MACKENZIE CHEMICAL WORKS SITE
CENTRAL ISLIP, SUFFOLK COUNTY, NEW YORK
EPA Facility ID: NYD980753420
September 29, 2004


Appendix A-Figures

Figure 1 (Location of Mackenzie Chemical Works Site)
Figure 2 (Mackenzie Chemical Works Site adn Surrounding Neighborhood (Aerial Image, 2001)
[PDF, 571KB]

Appendix B-Tables

Table 1B: Contaminants considered to be continuing sources of contamination to the groundwater at source areas.
All concentrations are in units of micrograms per liter (mcg/L).
Analyte Laboratory Leach Pool Waste Lagoon #1 Broken Subsurface Pipe
FoD Range FoD Range FoD Range
tetrachloroethene (PCE) 4/8 1-1,200 0/1 none 0/1 none
1,2,3-trichloropropane - NA 1/1 3,900 1/1 11,000,000
dichloromethane 1/8 210 0/1 none 0/1 none
chloroform 3/8 1-1,300 0/1 none 0/1 none
ethylbenzene 1/8 490 0/1 none 0/1 none
xylenes 3/8 2,200 0/1 none 0/1 none
trimethyl benzenes 2/8 13-2,000 0/1 none 0/1 none
methyl ethyl ketone 1/8 1,100 0/1 none 0/1 none
lead 1/8 400 - NA - NA
nickel 1/8 1,100 - NA - NA
FoD = Frequency of detection: number of detections divided by the number of samples
Range = Lowest detected level to highest level
NA = Not analyzed


Table 2B: Summary of contaminants detected in soil above guidance values.
* All concentrations are in units of milligrams per kilogram (mg/kg).
Contaminant Surface (0-6 inches) Shallow (6-24 inches)
(0-4 feet)
Intermediate (2-16 feet) Deep (> 16 feet)
FoD Range FoD Range FoD Range FoD Range FoD Range
Tetrachloroethene - NR or NA 6/6 0.006-0.4 3/18 0.02-2.3 6/23 0.002-1.3 1/44 0.001
1,2,3-trichloropropane - NR or NA 8/16 0.006-180 13/18 0.03-180 12/27 0.02-110 16/46 0.006-680
9H-fluoren-9-one - NR or NA 6/12 0.37-15 NA 2/4 0.12-0.82 0/4 none
2,7-dinitrofluorenone - NR or NA 2/5 1.1-4 NA 0/1 none - NR
2,4,7-trinitrofluorenone 1/2 21.4 4/7 1.5-1700 NA 0/1 none - NR
FoD = Frequency of detection: number of detections divided by the number of samples
Range = Lowest detected level to highest measured level
NR = Not reported
NA = Not analyzed
* New York State Department of Environmental Conservation Administrative Guidance Memorandum (TAGM) 4046 "Determination of soil cleanup objectives and cleanup levels" Albany, NY, 1994, or http://www.dec.state.ny.us/website/der/tagms/prtg4046.html
Samples collected from the 0-4 feet depth interval were done during the 1998-1999 remedial investigation. Samples from other depths were collected during investigations in 1987 and 1992 and in some cases, the 1998-1999 remedial investigation.


Table 3B: Summary of contaminants detected in groundwater above groundwater standards. All concentrations are in units of micrograms per liter (mcg/L).
Analyte On-site Monitoring Wells On-site Profile Samples Off-site Monitoring Wells Off-site Profile Samples
FoD Range FoD Range FoD Range FoD Range
tetrachloroethene (PCE) 7/12 2-54 0/2 none 3/40 2-6 14/128 0.7-5,600
1,2,3-trichloropropane 4/9 7-250 0/2 none 20/40 1-8,900 25/128 6-34,000
trichloroethene (TCE) 4/12 2-5 1/2 710 1/40 9 22/73 0.6-330*
benzene 1/12 1 2/2 30-110 2/40 1-110 0/55 none
toluene 2/12 3-650 2/2 21-96 7/40 1-3 0/55 none
ethylbenzene 1/12 30 1/2 200 0/40 none 0/55 none
xylenes 1/12 143 1/2 320 0/40 none 0/55 none
* = The location and pattern of off-site TCE detections suggests a source other than MacKenzie Chemical Works.
FoD = Frequency of detection = number of detections divided by the number of samples
Range = Lowest detected level to highest level


Table 4B: Summary of Soil Vapor Results.* All concentrations are in units of micrograms per cubic meter (mcg/m3).
Analyte On-site Off-site
FoD Range FoD Range
tetrachloroethene (PCE) 53/54 58-900,000 35/36 18-330
1,2,3-trichloropropane 12/12 60-2,200 0/36 none
1,1,1-trichloroethane 42/54 3-21,000 15/36 2-20
trichloroethene 31/54 3-3,400 11/36 3-19
benzene 4/54 3-4,400 7/36 3-6
toluene 12/54 3-7,700 35/36 2-71
xylenes 1/54 12,000 4/19 4-32
acetone 8/54 20-750 28/36 6-320
dichlorofluoromethane 12/12 11-150 24/36 2-220
* Includes chemicals detected at concentrations greater than either 1,000 mcg/m3 in on-site soil vapor samples or 100 mcg/m3 in off-site samples. Samples were collected in August 2000 as part of the remedial investigation.
FoD = Frequency of detection: number of detections divided by the number of samples.
Range = Lowest detected level to highest measured level.


Appendix C-Public Health Hazard Categories

INTERIM PUBLIC HEALTH HAZARD CATEGORIES

CATEGORY / DEFINITION DATA SUFFICIENCY CRITERIA
A. Urgent Public Health Hazard
This category is used for sites where short-term exposures (< 1 year) to hazardous substances or conditions could result in adverse health effects that require rapid intervention.
This determination represents a professional judgment based on critical data that 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. 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.
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 year) to hazardous substance or conditions that could result in adverse health effects.
This determination represents a professional judgment based on critical data that 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. 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 or safety hazards.
C. Indeterminate Public Health Hazard
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.
This determination represents a professional judgment that critical data are missing and ATSDR has judged the data are insufficient to support a decision. This does not necessarily imply all data are incomplete, but that some additional data are required to support a decision. The health assessor must determine, using professional judgment, 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.
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 judgment based on critical data that 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. 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.
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.
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
*Such as environmental and demographic data; health outcome data; exposure data; community health concerns information; toxicologic, medical, and epidemiologic data; monitoring and management plans.


Next SectionTable of Contents

  
 
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Agency for Toxic Substances and Disease Registry, 4770 Buford Hwy NE, Atlanta, GA 30341
Contact CDC: 800-232-4636 / TTY: 888-232-6348

A-Z Index

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #