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PUBLIC HEALTH ASSESSMENT

M & T DELISA LANDFILL
OCEAN TOWNSHIP, MONMOUTH COUNTY, NEW JERSEY


APPENDICES

APPENDIX A

Figure 1. Location Map
Figure 1. Location Map

Figure 2. Site Sketch Map
Figure 2. Site Sketch Map




APPENDIX B

TABLE 1 - Range of Contaminant Concentrations in On-site Groundwater Monitoring Well Samples; M&T Delisa Site.


Contaminant Aquifer Concentration*
(ug/l)
Comparison Value++
ug/l Source

Arsenic nd-13.8 0.02 CREG

Chromium

nd-222.0 50 RMEG

Lead

e-42.8 15 MCL(A)
Nickel nd-156.0 100 LTHA

++ - comparison values listed are current as of December 1992
CREG - Carcinogenic Risk Evaluation Guide for 1x10-6 excess cancer risk
RMEG - Reference Dose Media Evaluation Guide
MCL(A) - USEPA Action Level for drinking water
LTHA - USEPA Lifetime Health Advisory for drinking water
nd - not detected
e - estimated quantity below the contract required quantitation limit
Source: 1990 Final Remedial Investigation Report



TABLE 2 - Range of Contaminant Concentrations in On-site Air Samples; M&T Delisa Site.



Contaminant Concentration (ug/m3)

Outdoor
Gas Vents*

Indoor
Air

Benzene

nd-2,206.00 nd-5.90

Carbon Tetrachloride

nd nd-1.00

Chloroform

nd-1.08 nd-16.10
Methylene Chloride nd-70.60 nd-61.10

Toluene

nd-350.00 4.00-192.60

1,1,1-Trichloroethane

nd-13.81 1.20-58.20

Trichloroethene

nd nd-3.90

Trichlorofluoromethane

7.85-88.24 nd-297.00

Xylenes

nd-29.41 nd-26.50

* - August 1988 gas vent data have not been included due to QA/QC problems
nd - not detected
Source: 1990 Final Remedial Investigation Report



TABLE 3 - Range of Contaminant Concentrations in On-site Surface Water Samples; M&T Delisa Site.



Contaminant Surface Water
Concentration (ug/l)
Comparison Value++

ug/l

Source

Arsenic

nd 0.02 CREG

Chromium

nd 50 RMEG

Lead

e 15 MCL(A)

Nickel

nd 100 LTHA

++ - comparison values listed are current as of December 1992
CREG - Carcinogenic Risk Evaluation Guide for 1x10-6 excess cancer risk
RMEG - Reference Dose Media Evaluation Guide
MCL(A) - USEPA Action Level for drinking water
LTHA - USEPA Lifetime Health Advisory for drinking water
nd - not detected
e - estimated quantity below the contract required quantitation limit
Source: 1990 Final Remedial Investigation Report



TABLE 4 - Range of Contaminant Concentrations in On-site Sediment Samples; M&T Delisa Site.



Contaminant Sediment
Concentration (mg/kg)
Comparison Value++
mg/kg Source

Arsenic

e-4.0 0.4 CREG

Chromium

8.1-14.2 250 RMEG

Lead

9.6-56.2 none none

Nickel

nd-e none none

++ - comparison values listed are current as of December 1992
CREG - Carcinogenic Risk Evaluation Guide for 1x10-6 excess cancer risk
RMEG - Reference Dose Media Evaluation Guide
nd - not detected
e - estimated quantity below the contract required quantitation limit
Source: 1990 Final Remedial Investigation Report



TABLE 5 - Range of Contaminant Concentrations in Off-site Private Well Samples; M&T Delisa Site.



Contaminant Aquifer Concentration* (ug/l) Comparison Value++
Shallow Deep ug/l Source

Arsenic

nd nd 0.02 CREG

Chromium

nd nd 50 RMEG

Lead

6.4 e 15 MCL(A)

Nickel

nd nd 100 LTHA

++ - comparison values listed are current as of December 1992
CREG - Carcinogenic Risk Evaluation Guide for 1x10-6 excess cancer risk
RMEG - Reference Dose Media Evaluation Guide
MCL(A) - USEPA Action Level for drinking water
LTHA - USEPA Lifetime Health Advisory for drinking water
nd - not detected
e - estimated quantity below the contract required quantitation limit
Source: 1990 Final Remedial Investigation Report


APPENDIX C

Environmental Control Design Features of
Seaview Square Mall

With the building of the Mall, a number of construction elementswere implemented to provide environmental controls, i.e., refusemovement, gas control, and leachate control. These are summarizedbelow:

Refuse Movement: The refuse material was found to be unsuitablefor building support; therefore, the refuse material situated underthe planned Mall was removed. The refuse was excavated down to theunderlying soils. Then it was placed in areas already containingrefuse. The area excavated was replaced with clean fill which wascapable of supporting the buildings. The result was that thebuildings are constructed within a low permeability bowl-shapedsoil configuration composed of the naturally occurring Shark RiverMarl material beneath the Mall and the 3 to 10 foot thick claybarrier installed during construction to prevent landfill gasmigration to the buildings.

Landfill Gas Control: The Mall construction implemented threemeasures to control the potential movement of landfill gas into theMall. The first was the installation of the clay barrier discussedabove. The second was the construction of passive control vents,consisting of perforated horizontal collection pipes located in therefuse attached to vertical pipes open to the atmosphere, whichprovide a preferential pathway for landfill gas migration and helpprevent horizontal migration into the buildings. The last measurewas to limit the permeability of the Mall's utility corridors(which contain sanitary sewers, electrical wiring, etc.) by placingall utility lines within one narrow corridor, replacing refuse inthis corridor with clean soil, and compacting the soil to reducepermeability. Utilities which could not be placed within thiscorridor were enclosed in concrete.

Leachate Control: Leachate is generated when rainfall infiltratesinto the ground and percolates through refuse material, or whenground water moves horizontally through the refuse. Four measureswere implemented to minimize leachate generation: modifications tothe storm water collection system, construction of a leachatecollection system, installation of a clay barrier, and covering thesurface of the landfill with pavement. The manner in which thesemeasures were implemented is described below:

  • The storm water collection system was designed to keep storm water separate from leachate by: (1) using the parking lot as a low permeability cap over the refuse to reduce infiltration of precipitation and collect storm water runoff; (2) constructing catch basins and storm drain pipes as close to the surface as possible; and (3) constructing storm water pipes designed to be impermeable to leachate infiltration.
  • A leachate collection system consisting of a perforated pipe within a gravel trench situated to intercept ground water/leachate moving toward Deal Lake Brook was also installed. The liquid is then collected in a tank and discharged to a municipal waste water treatment plant.
  • The clay barrier, which was installed between the refuse and clean soil fill, acts as a barrier to ground water/leachate flow, preventing it from migrating to or under the Mall buildings.
  • The surrounding parking lot acts as a low permeability capthereby reducing the volume of rain water which is availablefor leachate generation.

APPENDIX D

The following section was not available in electronic format for conversion to HTML at the time of preparation of this document. To obtain a hard copy of the document, please contact:

Agency for Toxic Substances and Disease Registry
Attn: Chief, Program Evaluation, Records, and Information Services Branch, E-56
1600 Clifton Road NE, Atlanta, Georgia 30333

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