Twin City Locating
Centralia, Washington
Phone: (360) 720-3333
Twin City Locating, LLC
Private Utility Locating and GPR (Ground Penetrating Radar) services
(360)720-3333
Private Utility Locating in Longview, Washington
Twin City Locating provides professional private utility locating services throughout Longview, Washington, helping homeowners, contractors, and commercial property owners locate underground utilities before excavation begins. Accurate utility locating helps prevent costly infrastructure damage and ensures construction projects proceed safely.
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Longview is a major industrial and commercial center in southwest Washington located along the Columbia River in Cowlitz County. The city includes large manufacturing facilities, port infrastructure, commercial developments, and established residential neighborhoods. Many underground utilities were installed decades ago during earlier phases of development and may not be clearly documented.
Twin City Locating uses professional Ground Penetrating Radar (GPR) and electromagnetic locating equipment to identify underground utilities on private property before trenching or excavation begins.
Why private utility locating is important in Longview
Washington 811 locates public utilities only up to the service connection point. Utilities located beyond that point — such as sewer laterals, private electrical service lines, and water service lines — are considered private utilities and will remain unmarked.
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Private utility locating is particularly important in Longview because of:
• industrial utilities near the Columbia River
• older residential sewer infrastructure
• underground electrical service to commercial buildings
• utilities serving warehouses and manufacturing facilities
• undocumented underground infrastructure from earlier development
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Private locating helps prevent:
• breaking sewer laterals
• damaging underground electrical service lines
• cutting communication or fiber infrastructure
• damaging water service lines
• costly repairs and construction delays
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Underground utilities commonly located in Longview
Twin City Locating performs underground utility locating for residential, commercial, and industrial properties throughout Longview and surrounding Cowlitz County communities.
Utilities commonly located include:
• sewer laterals that connect a property to city sewer lines
• private water service lines
• underground electrical power lines
• electrical lines serving detached buildings
• power lines serving warehouses or commercial buildings
• storm drainage systems
• unknown underground utilities
Industrial and commercial properties in Longview often contain complex underground utility systems that require professional locating before excavation.
Ground Penetrating Radar locating in Longview
Ground Penetrating Radar is especially useful in Longview because many underground utilities are constructed from plastic or other non-metallic materials that cannot be detected using traditional electromagnetic locating equipment.
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GPR can help locate:
• PVC sewer lines
• plastic water service lines not equipped with tracer wire
• underground drainage pipes
• electrical conduit without tracer wire
• unknown buried infrastructure
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Common excavation projects in Longview
Private utility locating is commonly requested before projects such as:
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• sewer line repair or replacement
• trenching electrical service to commercial buildings
• installation of water service lines
• improvements to industrial or warehouse properties
• construction of new commercial facilities
• fence installation
• landscaping and drainage improvements
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Locating underground utilities before excavation helps prevent infrastructure damage, downtime, and costly delays.
Longview neighborhoods and surrounding areas served
Twin City Locating provides private utility locating services throughout Longview including:
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• Downtown Longview
• Columbia Heights neighborhood
• Olympic West area
• residential areas along Ocean Beach Highway
• industrial areas along the Columbia River
• surrounding Cowlitz County communities
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Schedule private utility locating in Longview
Twin City Locating provides professional underground utility locating services throughout Longview and Cowlitz County.​
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Twin City Locating, LLC
Centralia, Washington
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Serving Thurston County, Lewis County, Mason County, Grays Harbor County, Pacific County, and Cowlitz County.
Frequently Asked Questions
Q: Can utilities be located on commercial or industrial properties in Longview?
A: Yes. Underground utilities serving commercial and industrial buildings can often be located using electromagnetic locating and Ground Penetrating Radar.
Q: Can sewer laterals be located before repair work?
A: Yes. Sewer laterals can often be located before excavation begins.
Q: Do you locate utilities before construction projects?
A: Yes. Utility locating is commonly performed before residential, commercial, or industrial excavation projects. Often times, they are also performed during the projects process.