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TABLE A.13 (Cont.)
State a
Groundwater-Monitoring Requirements
Indiana Type I and II restricted waste sites and nonmunicipal solid waste landfills:
Groundwater monitoring is required during the active life of the landfill and
during the post-closure care period.
At least one upgradient well and three downgradient wells must be installed.
Samples must be collected semiannually.
Type III and IV restricted waste sites:
No groundwater monitoring is required.
Missouri Baseline groundwater quality data are required for at least 1 year.
Thereafter, detection monitoring must be established.
At least one upgradient well and three downgradient wells are required.
Samples must be collected at least semiannually for specified constituents.
Landfills Surface Impoundments
Ohio Class I, II, and III residual waste landfills:
− Hydrologic site investigation is required.
− Upgradient sampling is required quarterly for the first year to establish
background levels.
− Downgradient sampling is required semiannually for indicator parameters.
− Downgradient sampling is required annually for water quality parameters
(metals plus total organic carbon, total dissolved solids, chloride, sodium,
and radionuclides).
Class IV residual waste landfills:
− No groundwater monitoring is required unless leachate concentrations
exceed background groundwater concentrations.
− Requirements are same as above for Classes I, II, and III if leachate
concentrations exceed background groundwater concentrations.
Nontoxic fly ash and bottom ash monofills: No groundwater monitoring is
required.
Established, as necessary, on a case-specific basis in
water pollution control permits.
Established, as necessary, on a case-specific basis in
wastewater treatment unit permits.
Established, as necessary, on a case-specific basis in
water pollution control permits.
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