Utility Locating & Subsurface Scanning Specialists

Know what’s below before you drill or dig!

ProMark serves the private sector by locating all utilities not marked by the public Dig-Rite system which generally will only mark lines up to the meter. ProMark utilizes ElectroMagnetic and Ground Penetrating Radar Utility Locating equipment to accurately locate utilities to provide damage prevention.

Utilizing the latest technical equipment, ProMark effectively and accurately locates all types of underground utilities for preliminary design phases and utility mapping. All utilities are marked and color coded according to APWA American Public Works Association Industry Standards.

ProMark also provides subsurface scanning services utilizing the latest (GPR) Ground Penetrating Radar Technology.

ProMark provides services in the St. Louis Metropolitan Area and surrounding St. Charles, Warren, Lincoln and Jefferson Counties. We also provide services in the outlying areas and counties located in the States of Missouri and Eastern Illinois. Click here to see the list of cities where ProMark provides services.

View ProMark Utilities Service Area in a larger map

ProMark was established in the year 2004 to serve Private Businesses, Architectural, Engineering, and the Construction industry relating to various project types including…..Commercial, Industrial, Educational, Recreational and Governmental.

ProMark provides a “One Call Private Utility and Subsurface Scanning Service” that Benefits the entire Project Team from all phases including the up-front design phase through actual construction, record documentation and as-built phase of the project.

ProMark is owned and operated by Engineers with over 30 years of experience in Management, Design and Construction.


Private Utility Locating and Ground Penetrating Radar Services