Abstract: Systems and methods for delivering gases through a single manifold for remediation techniques are described. A system comprises a plurality of gaseous sources and a manifold comprising a plurality of inputs being operable for receiving gases from the gaseous sources, and a plurality of outputs being configured to supply gases to a plurality of injection wells for soil and groundwater remediation. The manifold is further operable for being controlled to select a one of the plurality of inputs and to select a one of the plurality of outputs. A programmable controller is operable for controlling the manifold to select one or more combinations of the plurality of inputs and to select one or more combinations of the plurality of outputs during programmed time intervals.