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Docusign Envelope ID: BB27E2CA-90E7-44DF-ACD6-60284C2E92F6 <br /> Page 4 of 5 <br /> Utility Quality Level: The value, assigned by the Professional, of a Utility Segment or subsurface <br /> Utility Feature that identifies the relative (nonquantifiable) uncertainty of a Utility Segment's or <br /> subsurface Utility Feature's existence and actual location to that of its documented location. <br /> (ASCE 38-22) <br /> Utility Report: A report or sufficient notes contained within a Utility Drawing, sealed by a <br /> Professional, that(1) contains information about the Utility Investigation that might otherwise not <br /> be conveyed, (2) assists the end user in understanding the subsurface Utility landscape and risks, <br /> (3) provides recommendations to address data deficiencies, and (4) complements the Utility <br /> Drawing Deliverables. (ASCE 38-22) <br /> Utility Segment: A continuous portion of a Utility for which the Utility Quality Level is constant, <br /> and the Attributes, other than Depth, are substantially identical. (ASCE 38-22) <br /> Vault: A concrete box underground that is used for utility purpose. <br /> General Data Limitations <br /> SUE services are performed in accordance with ASCE/UESI/CI 38-22 guideline, generally <br /> accepted engineering principles and practices at the time of service. However, a possibility exists <br /> that abandoned, forgotten, non-detectable, undocumented, or newly installed utilities may not get <br /> mapped using standard records research and surface geophysical survey procedures. While the <br /> ASCE 38-22 standard guidelines mitigate these issues, utilities possessing characteristics <br /> mentioned below can be missed while following standard Utility Designating and Locating <br /> procedures: <br /> 1. Utilities lacking apparent available records and without apparent surface features. <br /> 2. Utilities with record information which is illegible, misleading, or incomplete. <br /> 3. Utilities which are inaccurately reported or inaccurately represented by the utility owner as <br /> being a significant distance from the true position. <br /> 4. Abandoned utilities without apparent surface features. <br /> 5. Utilities buried excessively deep, beyond detection limits of standard utility designating <br /> equipment. <br /> 6. Non-conductive utilities buried in clay soil without apparent surface features. <br /> 7. Non-conductive lines buried away from the tracer wire (e.g., HDPE Gas) <br /> 8. Facilities installed after the SUE effort has been completed. <br /> A common problem occurs when the project involves facility owners and operators with <br /> insufficient records and non-conductive buried facilities (a situation often encountered with public <br /> works installations), infrastructure for oil and natural gas wells installed prior to 1960, and <br /> irrigation systems that utilize non-conductive water mains. Facilities mapped under these <br /> circumstances are often depicted as QLD during the utility designating field effort to keep <br /> operations and budgets at a practical level. As the design project progresses, some depicted <br /> facilities may have to be upgraded to a higher quality level through more advanced geophysical <br /> prospecting and utility locating methods to properly identify and assess utility conflicts for design <br /> and construction. <br /> R'd1SR'111~f"1c,e Ut llluir y Illh,111111gi III]eei uiIII]g I Ur'Muillluir'y <br />