Align Capital Partners-backed Alliance Technical Group, a provider of air quality testing, monitoring and source emissions testing services, completed the acquisition of Horizon Air Measurement Services, a provider of emissions testing services. Financial terms were not disclosed. “Adding resources to our rapidly expanding West Coast operations was imperative, and Horizon delivers on both strategic and geographic fit. As Alliance continues to expand, we look to partner with high quality, customer-focused companies across all of our services lines," Chris LeMay, Alliance CEO.