NC0038377_Figure 12-1 Mayo CEM_20150902

Primary Sources Secondary Sources Exposure Medium Exposure Route I Current Land Use I Hypothetical Future Land Use
Primary Release Mechanisms
Active Ash Basin
Secondary Release Mechanisms
Seeps to Crutchfield Branch
Secondary Release/Exposure Routes
Note 1: Evaluation of potential human health risks to off-site residents will be conducted based upon
results of ongoing groundwater contaminant fate and transport modeling.
Note 2: Would include consumption of fish, as applicable.
Active Ash Basin
Potential Human Receptors
• Potentially Complete Exposure Pathway
Incomplete Exposure Pathway
TOE
Drain
NPDES
Discharge
Seeps Soil
Groundwater I POP Mayo Lake
nent
P:\Duke Energy Progress. 1026\105. Mayo Ash Basin GW Assessment Plan\1.11 CSA Reporting\Figures\Figure 12-1 Mayo CEM.xlsx8/31/2015
Ingestion
Soil Dermal
Inhalation
Ingestion Note 2
Cruchfield TSurface Water Dermal
Branch Inhalation
Ingestion
Sediment Dermal
Inhalation
Ingestion
Groundwater -----1110 Dermal
Inhalation
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148 River Street, Suite 220
Greenville, SC 29601
Phone: [phone]
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Figure 12-1
Human Health
Conceptual Exposure Model
Mayo Steam Plant
Roxboro, North Carolina