Groundwater Contamination (1984) / Chapter Skim
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8. Groundwater Flow Modeling Study of the Love Canal Area, New York
8. Groundwater Flow Modeling Study of the Love Canal Area, New York
Pages 109-119
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From page 109... ...
BAC KGROU N D The Love Canal site is located on the east side of Niagara Falls, New York. The landfill at Love Canal was operated for nearly 30 yr and occupied a surface area of approximately 16 acres with the south end 400 m from the upper Niagara River near Cayuga Island.
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From page 110... ...
Discharge occurs as seepage faces and springs at the lower Niagara River, along the Niagara escarpment, and along parts of the upper Niagara River away from the falls. A generalized potentiometric map developed from historic records for the Lockport Dolomite Johnston, 1964)
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From page 111... ...
Determination of the horizontal hydraulic conductivity and storage coefficient of unconsolidated glacial units and the Lockport Dolomite; 2. Determination of the variation of hydraulic conductivity with depth in the dolomite; 3.
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From page 112... ...
The 22-h discharge test in the Lockport Dolomite provided an average field transmissivity of 0.0014 m2/sec and storage coefficient of 1.5 x 1O-4. These values are consistent with other values determined for the Lockport Dolomite in the Niagara vicinity.
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From page 113... ...
The western boundary follows approximately the covered conduits of the pump-storage project and is considered constant head. Calibration Calibration of the Lockport Dolomite model consists of matching the observed steady-state potentiometric surface in Figure 1 - -- - T -- .- ~ - ~ I 173 ZERO TRANSMISSIVITY I E1 WELL BLOCK t N ~ 1 O lMILES 113 8.2.
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From page 114... ...
GEOTRANS, INC. N COMPUTED STEADY STATE POTENT IOMETRIC SURFACE IN LOCKPORT DOLOMITE; FEET ABOVE MSL; CONTOUR INTERVAL = 10 FEET 111t'1 ~ O 1 mile puted values being slightly lower than the observed.
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From page 115... ...
If the connection is present to a lesser degree than assumed for the model, then the gradient would still be reversed by this pumpage; however, steady state may not be reached so quickly. Contamination Travel Times and Uncertainty Analysis If a contaminant is assumed to have entered the Lockport Dolomite, the travel time for the contaminant to reach the upper Niagara River can be computed.
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From page 116... ...
r 10 1o2 103 104 105 1o6 TRAVEL T I ME ( DAYS ) FIGURE 8.6 Histogram of travel times in days of solute from the south end of Love Canal to the upper Niagara River through the Lockport Dolomite.
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From page 117... ...
Confining Bed The travel times from the bottom of the canal through the confining bed to the Lockport Dolomite are also of interest. In the calibration of the dolomite model, the leakage rate for a typical block representing the canal was approximately 1.1 X 10- i2 m/sec.
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From page 118... ...
If contaminants were to enter the Lockport Dolomite at the south end of Love Canal, and if there were no adsorption, the mean travel time to the upper Niagara River for the solute would be 1000 days. This is dependent on assumptions concerning the flow properties.
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From page 119... ...
. Ground water in the Niagara Falls area, New York, State of New York Conservation Department Water Resources Commission Bulletin GW-53, 93 pp.
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