Utility Locating. 1. Perform or cause to be performed utility locating services to generally locate subsurface utilities utilizing not destructive techniques and the following equipment. The utility locating services is not a substitute for completely exposing subsurface utilities by means of hydro‐excavation which may be required upon completion of the locating services and commencement of engineering design services where conflicts should come to light. Hydro‐excavation services is not included in the utility locating services. • Underground Scanning GPR Antenna. This GPR Antenna uses frequencies ranging from 250 MHz to 450 MHz and is mounted in a stroller frame that rolls over the surface. Data is displayed on a screen and marked in the field in real‐time. The surface needs to be reasonably smooth and unobstructed to obtain readable scans. Obstructions such as curbs, landscaping, and vegetation will limit the efficacy of GPR. The total effective scan depth can be as much as 8’ or more with this antenna but can vary widely depending on the soil conditions and composition. Some soil types, such as clay, may limit maximum depths to 3’ or less. As depth increases, targets must be larger to be detected, and non‐metallic targets can be challenging to locate. The depths provided should always be treated as estimates as their accuracy can be affected by multiple factors. • Electromagnetic Pipe Locator. This receiver can passively detect the signals from live AC power or radio signals traveling along some conductive utilities. Operators can connect a transmitter directly to accessible metallic pipes, risers, or tracer wires to generate a current at a specific frequency. The receiver can then detect the resulting signal along the pipe or tracer wire. Various factors may impact this device's effectiveness, including (but not limited to) access to the utility, conductivity, grounding, and interference from other utilities. The depths provided should always be treated as estimates as their accuracy can be affected by multiple factors.
Utility Locating identify and locate underground utilities using electromagnetic detection equipment. Additionally, use radiolocation or ground-penetrating radar to identify abandoned pipelines or those composed of nonferrous materials as necessary
Utility Locating. For streets that require full depth reconstruction, where excavation will extend below the existing structural section, Xxxxxx will gather utility depths by electronic locating and potholing. Scope of this work will be deter- mined based on the treatment selections in previous task.
Utility Locating. The Contractor is responsible for contacting the utility location service and verifying completion of inspection prior to commencing work. Stipulations regarding entrance electrical service and rights-of-way are to be referred to the Director of the corresponding City of Ocala Department. Lead Time The maximum acceptable lead time on materials is two (2) weeks. The City shall issue a Notice to Proceed (NTP) upon notification of receipt materials by Contractor.
Utility Locating. Contractor is responsible for contacting the utility location service and verifying completion of inspection prior to commencing work. Stipulations regarding entrance electrical service and rights-of-way are to be referred to the Director of the corresponding City of Ocala Department. 7.
Utility Locating. Our subconsultant, SiteScan, who has an office in Rancho Xxxxxxx, will investigate and mark depths of existing utilities within the 9 streets identified on the attached spreadsheet potentially requiring full reconstruction. These depths will be used to evaluate conflicts between shallow existing utilities and the proposed reconstruction alternatives. SiteScan will also identify the locations of the underground utilities on Rossmoor Dr from Bronwood Wy to Xxxxxxxxxx Wy. SiteScan will perform an investigation of existing utilities within the roadways identified on the spreadsheet. Their technicians will utilize various non‐destructive techniques to identify the location of existing utilities. Geophysical equipment may be used including GPR, Electromagnetic Locators, Ram Rods, etc. to assist in locating lines. Where geophysical equipment is utilized, the investigation will be performed to identify utilities to quality Level B as defined by the University of Purdue guidelines for quality levels produced by Ground Penetrating Radar. The utilities identified during the investigation will be marked out onsite following the American Public Works Association (APWA) guidelines for the marking of utilities. APWA industry standard colors will be used to mark the locations directly on the surface. Nonpermanent water‐ based paint will be used where permitted. Where paint is not permitted (such as finished decorative surfaces or high traffic customer areas) chalk, wax or other materials may be used.
Utility Locating. UIA will provide utility locating services directly or via sub-contractor for the City Network through the duration of this Contract.
