 LITTLE ROCK, Ark. HOUSTON--BUSINESS WIRE--Montrose Environmental Group, Inc. Montrose NYSE: MEG today announced the acquisition of Environmental Chemistry, Inc. ECI, a full-service environmental laboratory serving the Texas and Louisiana gulf coast region. ECIs leadership team, including CEO Deanna Jean Zeck and President Nan Thorney, will join Montrose, and the business will be integrated into the Companys Measurement and Analysis Segment and will operate as part of Enthalpy An 