NH SB593

Establishes state preference for expanding existing landfills over developing new "greenfield" landfill sites, citing the state's interest in maintaining adequate disposal capacity for New Hampshire-generated solid waste

Grants the Department of Environmental Services exclusive permitting authority over landfill expansions, preempting all municipal ordinances, zoning regulations, and local restrictions from blocking state-approved expansions

Requires landfill owners receiving expansion approval to increase host community compensation to a minimum of $2.50 per ton for all waste received in the expansion area

Mandates new landfills (not expansions) maintain setback distances from drinking water wells, rivers, lakes, and coastal waters sufficient to prevent contaminated groundwater from reaching these sources within 5 years

Requires applications for new non-expansion landfills to include detailed assessments of visual impacts, effects on property values, tourism, outdoor recreation, local economies, and impacts from noise, odor, and traffic