GMC Charleston,

South Carolina

About GMC Charleston

What began as a merger with a local boutique firm has grown into a dynamic and close-knit team. Through strategic additions of talented professionals and a natural alignment of values, our Charleston office has become a collaborative group dedicated to shaping a stronger Lowcountry community. Despite being a newer GMC office, the Charleston team has carved out a distinct personality. The team injects a fresh and fun energy to the firm. From inside jokes to funny quotes, they bring a sense of humor and camaraderie to everything they do. Our Charleston team takes their work seriously while also enjoying the people and the process along the way.

ENR Southeast 2024 Design Firm of the Year

2025 South Carolina Best Places to Work

#151 ENR Top 500 Design Firms

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Charleston Office Leader

Josh Bagwell

AIA, NCARB, GGP, LEED AP

josh.bagwell@gmcnetwork.com

(843) 727-3140

Charleston Culture

Charleston Christmas Photostrip Picture 1 - Copy

Charleston Projects

Pontiac Elementary School

The Pontiac Elementary School addition and renovation project sought to create a learning environment that not only met the functional needs of the school but also fostered a sense of community, collaboration, and belonging. The design approach aimed to transform the school into a vibrant hub where students could thrive academically and socially.

Rice Creek Elementary School

The renovated Rice Creek Elementary School will create a student-centered learning environment that serves as a home away from home for the Rice Creek community. Building additions consist of a new Gymnasium, Echo Lab Classroom, and support spaces, plus an addition to expand the cafeteria, building renovations are small and consist of interior wall alterations that make two MOD Classrooms and conversion of a classroom to offices. The Gymnasium addition is separated by a pedestrian walkway. Site work consists of reconfiguration of the bus loop to share the drive with Ridgeview High School.

Hydraulic Modeling, Planning, Transmission and Distribution Improvements

GMC was secured by Laurens County Water and Sewer Commission (LCWSC) to evaluate alternatives to incorporate the new surface water treatment plant on Lake Greenwood into their existing distribution system.

Lake Greenwood Water Treatment Facility and Raw Water Intake

The new water treatment plant and raw water intake on Lake Greenwood were awarded in two phases: Phase I consisted of an evaluation to define the design conditions, and Phase II consisted of executing the design. Defining the design conditions in Phase I consisted of population and flow projections, public involvement, permitting, hydraulic analysis as well as piloting of four treatment technologies.

Grand Strand Water and Sewer Hydraulic Modeling

GMC was secured by Grand Strand Water and Sewer Authority (GSWSA) to evaluate treatment and/or transmission alternatives to allow the GSWSA Bull Creek service area to meet 2040 demands. The Bull Creek distribution system includes a 45 MGD surface water treatment plant, approximately 9,700,000-linear-feet of transmission and distribution piping, 9 booster pump stations, 4 blend wells, 17 aquifer storage and recovery (ASR) wells, and approximately 85,900 customer connections.

Horse Creek Pollution Control Facility

GMC completed a study (Phase I) for the Horse Creek Pollution Control Facility and a design (Phase II) based on the findings of the study. This process provided a confident course of action for the utility. As a result of the project, the facility now has a primary design capacity of 26 MGD with a peak of 65 MGD and a secondary capacity of 20 MGD with a peak of 40 MGD, utilizing a 20-MG offline equalization basin.