IMS Infrastructure Management Services 12/27/2023

City of Everett | RFP No. 2023-057 November 2, 2023 IMS Infrastructure Management Services, LP 15 The 3D cameras can detect one-millimeter-wide cracks and full-lane-width rutting, as required by ASTM D6433, on the pavement surface at speeds up to 65 mph. The versatility of the LCMS- 2 technology provides added value to the City since the automated pavement condition survey and data collection can be performed at posted speeds without the need for traffic control. Pavement data collection and imagery surveys are expected to progress at a rate of between 30 and 50 miles per day for the City. Once the pavement survey is complete, the IMS team processes the collected data using Connect™ software, a combination of advanced analytical tools, and quality control/quality assurance (QC/QA) checks to determine accurate and repeatable PCI values for each roadway segment. We perform a rigorous, manual QC/QA process conducted by IMS’ certified PCI raters to further ensure data accuracy. In addition, we deliver our PCI ratings and supporting data (inventory, distress, rutting, and international roughness index [IRI] information) in both spreadsheet and GIS formats for easy review. The data that we provide may be used immediately for decision making or be imported into any pavement management software for additional analysis and reporting. Any distresses that are not captured by the automated LCMS-2 technology will be captured by our trained in-vehicle distress raters. The automated data is supplemented by information collected by the second crew person in the van using a mobile mapping solution known as Drive™. The Drive™ file format is part of IMS’ unique approach to pavement condition surveys. Drive™ files contain useful information for our field crews, including direction routing information and one-pass versus two-pass data collection instructions. They allow our trained field staff to capture additional condition and inspection information used by our QC/QA team to validate condition data. We perform the following activities daily during data collection to ensure data consistency: • Equipment is calibrated and daily reports completed • All sensors are continually monitored to ensure they are receiving data within specification • The LCMS-2-equipped RST crew chief and operator manually monitor the HD digital images, GPS, distress recorder, roughness measurements, and rutting data • Each street is noted within the inventory and on the map as well as through GPS and assignment by van number • Production is tracked and records of coverage are documented • If necessary, a corrective action plan is developed and followed • All data is backed up and sent to the IMS primary office for processing