RES provided environmental support for the design-build team for this project. The project corridor extends 20 miles and includes the construction of bus rapid transit stations (BRTS), modification of select intersections, and a park-and-ride garage. RES provides the work necessary to assess, plan for, and manage the contamination along the former busway site, as well as environmental permitting support and dewatering planning. Specifically, this includes the following scope items: 

• Review regulatory and historical records to identify potentially contaminated sites and historical activities that may have impacted the soil or groundwater along the corridor and may affect design and construction; 

• Prepare sampling plans for Miami-Dade County Department of Regulatory and Economic Resources (RER) approval; 

• Conduct well installation soil and groundwater monitoring as necessary to identify contamination impacts; 

• Work with the design team to identify alternate strategies for stormwater management to accommodate contamination impacts; 

• Prepare sampling reports summarizing the sampling rationale, sampling scope, and results to support the proposed drainage design for RER approval; 

• Prepare health and safety plan, air monitoring plan, and dust control plan to be used during construction to manage contamination exposure risks; 

• Develop dewatering treatment plans for areas with contaminated groundwater; 

• Provide natural resources surveys, including a Florida Bonneted Bat Survey; and 

• Support the permitting process as it relates to environmental resources and contamination. 

Work was conducted on an accelerated schedule to accommodate the project commitments. Once design and permitting were completed, RES continued working on the project through a contract with OHL, USA, for the environmental construction oversight, air and dust sampling as part of the Miami Dade County Environmental Resource Management (DERM) approved Health and Safety, Soil Management and Air Monitoring Plan. RES monitored dust emissions and conducted air sampling throughout the construction process while work was conducted in the contaminated areas. The first five days of soil digging in a new construction area required air sampling and dust monitoring. The air samples were collected and shipped to the Eurofins Environment Testing laboratory to analyze arsenic and benzo(a)pyrene. Dust monitoring was conducted during excavation and soil movement activities. After construction was completed at each site, a report was submitted to DERM for review and approval of the air sampling and dust management activities. The construction in the contaminated areas took approximately 18 months to complete. Other site construction is ongoing.