1991
Dr. Gregory N. Richardson, P.E., founded G.N. Richardson & Associates, Inc.
1991
U.S. government promulgates Subtitle D of the Resource Conservation and Recovery Act to address growing concerns regarding non-hazardous wastes.
1993
Subtitle-D rules of solid waste management become effective.
1996
U.S. EPA finalizes New Source Performance Standards and Existing Source Emission Guidelines for Control of Emissions from Municipal Solid Waste Landfills.
2001
Firm designs and constructs first Subtitle-D Landfill Closure in NC.
2001
Firm designs/implements the first "Rain Gutter" cap drainage system.
2003
EPA finalizes National Emissions Standards for Hazardous Air Pollutants for MSW Landfills, adding record keeping and LFG control requirements.
2006
G.N. Richardson & Associates, Inc. changes to Richardson Smith Gardner & Associates, Inc.
2006
Firm designs the first Gravity Groundwater Intercept System for a landfill expansion.
2006
S+G becomes one of the first firms to become a Chicago Climate Exchange (CCX) Verifier of landfill carbon credits, verifying over 3 million tons of carbon credits.
2007
NCDEQ Revises C&D Landfill Permitting rules.
2007
NC promulgates the Solid Waste Management Act of 2007.
2009
S+G co-designed the first Exposed Membrane Landfill Closure (Florida).
2012
Change to Smith Gardner, Inc. This change represented the successful transition of ownership from our founder.
2012
S+G awarded U.S. EPA Site Refuse Award for SC Superfund Site.
2012
S+G Opens office in Columbia, SC.
2016
U.S. EPA finalizes New Source Performance Standards and Existing Source Emission Guidelines.
2020
NCDEQ reviews and updates solid waste regulations for transfer stations and MSW and C&D landfills.
