Civil engineering, land surveying, and geotechnical testing services serving Montana for over 30 years
Gaston Engineering & Surveying, P.C. provides civil engineering, land surveying, and environmental consulting services from its base in Bozeman, Montana. Serving public and private clients across the Gallatin Valley and broader Montana for over 30 years, it supports projects ranging from large subdivisions and commercial developments to municipal infrastructure and agricultural water resource systems. The practice maintains an in-house soils and materials testing laboratory to provide integrated geotechnical and quality control support.
Comprehensive civil design and site development services for public, private, commercial, and municipal projects.
Land planning, lot layouts, preliminary plat applications, and agency coordination for residential and commercial developments.
Infrastructure design, road and street planning, and utility expansion projects for local municipalities.
Environmental analysis and community impact assessments to support project permitting and approval.
Construction administration, field observation, quality control, and project management services.
Precise surveying solutions utilizing advanced GPS technology and 3D modeling systems.
Land boundary determinations, legal descriptions, and lot layout definitions.
Detailed terrain, contour, and physical feature mapping.
High-precision layout, construction staking, and verification services to guide on-site works.
Subsurface investigations, foundation recommendations, and certified laboratory evaluations.
Subsurface exploration, soil stability assessments, and foundation engineering.
Certified in-house testing of soils, concrete, and construction materials.
Planning, design, and analysis of water distribution, wastewater treatment, and stormwater systems.
System design for gravity sewers, water mains, and comprehensive stormwater management.
Design and upgrades of filtration, chemical feed, and centralized collection and treatment plants.
Hydrological analysis, water rights administration, and floodplain management.
Runoff analysis, stream flow monitoring, and groundwater development in challenging geologic terrains.
Preparing beneficial water use permits and executing FEMA-compliant floodplain delineations.
Commercial · Retail · Residential · Land Development · Sports & Recreation · Healthcare · Government · Water Supply · Wastewater · Stormwater & Flood Control · Water Resources · Agriculture
Bozeman, MT · Commercial · Client: Costco
Complete civil design including surveying, site planning, geotechnical engineering, grading and drainage, materials testing, and construction inspection for the Costco building and Costco Gas Station. Work began with in-depth feasibility studies covering traffic accessibility, site geology, and adjacent utilities.
Bozeman, MT · Water Supply · Client: City of Bozeman
Project management, civil engineering design, and construction management and inspection for the expansion of the treatment plant, doubling its existing filtration capacity and installing a chemical feed system.
Big Sky, MT · Sports & Recreation · Client: Big Sky Resort
Multi-phase engineering and planning for mountain subdivisions including the 89-site Powder Ridge development and the 62-lot Cascade development.
Bozeman, MT · Commercial · Client: Billion Chrysler Auto Plaza
Project management, surveying, planning, engineering, and construction management for a 20-acre planned unit development, designed with two public water wells to meet fire flow demands.