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City of Everett | RFP No. 2023-057 <br />November 2, 2023 <br />IMS Infrastructure Management Services, LP 14 <br />Pavement Condition Survey <br />Our two-person field crews will collect both outward facing and downward facing pavement <br />imagery, using one of our RSTs equipped with second generation Laser Crack Measurement <br />System (LCMS-2) 3D pavement imaging technology. Pavement surface distresses including <br />alligator cracking, block cracking, rutting, raveling, reflective cracking, loss of section, bleeding, <br />edge distress, and patched areas as well as right of way (ROW) imagery will be collected on a <br />segment-by-segment basis, with each distress captured by type, extent, and severity as <br />outlined in ASTM D6433. The data and imagery that is collected is then linked to the City’s <br />existing GIS data. <br /> <br />The LCMS-2 system is the highest resolution 3D pavement scanning technology available. Each <br />LCMS-2 system relies on two downward-facing, high-resolution 3D cameras. Combined, the two <br />3D cameras capture continuous downward imagery for more than a standard lane width. The <br />cameras are coupled with downward-facing lasers that provide constant and consistent <br />illumination of the pavement surface, regardless of ambient lighting conditions. The impacts of <br />shadows from trees, buildings, or simply overcast sky conditions are eliminated by the laser <br />illumination. <br /> <br /> <br />IMS has the largest fleet of RST LCMS-2 equipped systems dedicated to municipal pavement <br />management