Substation Engineering Success

Atwell’s power engineering team contributed to the development of a 200MW wind energy facility by successfully executing the design and delivery of a 345kV – 34.5kV substation. Services included: equipment layout, bus system design, structure steel design, foundational design, raceway system design, grounding system design, metal-clad switchgear specification, structural and electrical design, capacitor bank design, relaying, SCADA design and wiring design.

Southwest Stormwater Engineering

Atwell contributed to the design, entitlement and permitting activities related to the construction of a new parking and storage area for 76 Isotainer trailers for a large-scale chemical manufacturing facility in the southwestern United States.

As part of the project, the team designed a large-scale, innovative stormwater collection and drainage system to accommodate heavy impacts to the mostly undeveloped area during rain events. The system incorporated a turf reinforcement mat, instead of concrete or rip-rap, which allows the growth of plants and trees for a natural, attractive look. The growth also protects against erosion due to water flow velocities of up to 11.3 feet/second.

Atwell also handled construction administration to provide request for information (RFI) answers, material review and certification of the constructed retention basin volumes for conformance with the approved improvement plans.

Creating Community

Urban multi-family projects often struggle with development and other constraints in the pursuit of creating attractive, flourishing communities. Atwell’s land development team supported the redevelopment of a seven-acre site in the Greater Nashville area into a 66-unit infill community featuring townhomes, carriage homes and duplex units.

Despite its urban setting, the site’s creative planning included open-space corridors, as well as site amenities such as benches, gazebos and attractive community signage. Services provided included land surveying, land planning, landscape architecture, site engineering and permit expedition.

Residential Development Low-Impact Design

Residential Development Low-Impact Design

Nestled around a 12-acre lake, the development includes 280 acres of open space and utilized technical design solutions to minimize environmental impact and restore the site’s natural features, including a river, lake and wetlands.

Atwell engineers and ecologists collaborated to design a low-impact stormwater management system using the lake for storage in conjunction with a newly designed dam outlet. As a solution to the site’s utility limitations, Atwell designed wastewater treatment and storage facilities to service the community.