TABLE 1
MAXIMUM CONCENTRATION OF METALS IN SEWAGE SLUDGE
FOR LAND APPLICATIONTABLE 1MAXIMUM CONCENTRATION OF METALS IN SEWAGE SLUDGEFOR LAND APPLICATION
Metal Concentration (mg/kg)
Arsenic.................................................................................................................................... 20
Cadmium................................................................................................................................. 39
Chromium............................................................................................................................. 1000
Copper.................................................................................................................................. 1500
Lead....................................................................................................................................... 250
Mercury................................................................................................................................... 10
Molybdenum............................................................................................................................. 18
Nickel..................................................................................................................................... 200
Selenium................................................................................................................................... 36
Zinc...................................................................................................................................... 2800
TABLE 2
PROVISIONAL MAXIMUM CONCENTRATION OF METALS IN SEWAGE SLUDGE
FOR PRODUCERS NOT MEETING TABLE 1 CRITERIATABLE 2PROVISIONAL MAXIMUM CONCENTRATION OF METALS IN SEWAGE SLUDGEFOR PRODUCERS NOT MEETING TABLE 1 CRITERIA
Metal Concentration (mg/kg)
Arsenic..................................................................................................................................... 75
Cadmium.................................................................................................................................. 85
Chromium............................................................................................................................. 3000
Copper.................................................................................................................................. 4300
Lead....................................................................................................................................... 840
Mercury................................................................................................................................... 57
Molybdenum............................................................................................................................. 75
Nickel..................................................................................................................................... 420
Selenium................................................................................................................................. 100
Zinc...................................................................................................................................... 7500
TABLE 3
MAXIMUM ALLOWABLE SOIL CONCENTRATIONS
Metal Concentration (mg/kg)
Arsenic................................................................................................................................. 13.0
Cadmium.............................................................................................................................. 2.4
Chromium............................................................................................................................ 290
Copper................................................................................................................................ 92
Lead.................................................................................................................................... 85
Mercury.............................................................................................................................. 2.4
Molybdenum........................................................................................................................ 4.6
Nickel.................................................................................................................................. 83*
Selenium.............................................................................................................................. 10
Zinc.................................................................................................................................... 290**
* For sandy to silt loam soils with a permeability greater than 2.0 inches per hour, the maximum allowable soil concentration for nickel is 50 mg/kg.
** For those sites with greater than 30% legume species, the maximum allowable soil concentration for zinc is 130 mg/kg for sandy to silt loam soils with permeability greater than 2.0 inches per hour and 200 mg/kg for other soil types.
W. Va. Code R. § 33-2-6