NC0038377_Table 12-12 MAYO Matrix for Determination of COPCs - HH_20150902

TABLEI2-12
MATRIX FOR DETERMINATION OF CONSTITUENTS OF POTENTIAL CONCERN - HUMAN HEALTH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO NC
Analytical Parameter
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Chloride
Total
Chromium
Cr(III)/Cr(VI)
Hexavalent
Chromium
Cobalt
Copper
Iron
Lead
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
as N)
Potassium
Selenium
Sodium
Strontium
Sulfate
Thallium
Total
Dissolved
Solids
Vanadium
Zinc
Medium/Basis for COPC Designation
Ash Pore Water
Concentration exceeds screening value
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Analytical detection limit exceeds screening value
No screening value
✓
Alluvial Groundwater
Concentration exceeds screening value
✓
✓
✓
✓
✓
✓
Analytical detection limit exceeds screening value
No screening value
✓
Saprolite Groundwater
Concentration exceeds screening value
✓
✓
✓
✓
Analytical detection limit exceeds screening value
No screening value
✓
Transition Zone Groundwater
Concentration exceeds screening value
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Analytical detection limit exceeds screening value
No screening value
✓
Bedrock Groundwater
Concentration exceeds screening value
✓
✓
✓
✓
✓
✓
Analytical detection limit exceeds screening value
No screening value
✓
Soil
Concentration exceeds screening value
✓
✓
NE
✓
✓
✓
NA
✓
Analytical detection limit exceeds screening value
✓
✓
NE
✓
✓
NA
No screening value
NE
NA
Sediment
Concentration exceeds screening value
✓
NE
✓
✓
✓
NA
✓
Analytical detection limit exceeds screening value
✓
✓
NE
✓
✓
NA
No screening value
NE
NA
Surface Water
Concentration exceeds screening value
✓
NE
✓
Analytical detection limit exceeds screening value
✓
NE
No screening value
✓
NE
✓
✓
✓
Seep Water
Concentration exceeds screening value
✓
NE
✓
✓
Analytical detection limit exceeds screening value
✓
NE
No screening value
✓
NE
✓
✓
✓
Prepared by: VTV Checked by: RKD
Mote-.
Coal ash COPC (See Table 12-2)
Constituent determined to be a human health COPC potentially attributable to coal ash.
Constituent not determined to be a human health COPC potentially attributable to coal ash.
Hexavalent chromium (Cr+6) is a human health COPC but ash pore water data to date suggest that Cr+e in groundwater is not attributable to coal ash (7-10).
NA = Not applicable
NE = Not evaluated
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