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Understanding of Need / Scope of Work "` <br />priorities we have performed digital imaging surveys for local agencies that complameht our <br />pavement inspections. Our services are a proactive and cost efficient GPS survey methodology <br />that will allow for the collection of numerous GPS locations using "one" set of digital imagery <br />(e.g. five citywide infrastructure surveys for the cost of one). We always tell our clients, <br />regarding this task service, "it has to be the right fit at the right time". If the City is looking to <br />proactively collect numerous assets under one survey effort within the next 12 to 18 months, <br />this is the solution. <br />Beyond the pavement survey capabilities, the City will be able to collect other Infrastructure <br />assets in the future such as signs, driveways, catch basins and <br />other ROW features; a tremendous costs savings that could <br />reach $400,000 over the next 3 years. <br />With verification of street segmentation, the inspection of <br />approximately 105 centerline miles will be surveyed (or <br />citywide). MlcroPAVER - Army Corp of Engineers AC and PCC <br />distress types will be collected based upon actual surface <br />conditions and physical characteristics of the segment while <br />beingflexible to current City practices. <br />Our automated digital imaging allows technician to collect the following: <br />• Continuous pavement imaging (images taken every 5 meters, competition typically <br />surveys at every R meters/25 feet intervals) <br />• Surface roughness ratings (IRI); Rutting depth (full width of lane or street) <br />• Imaging captures 100% of each pavement segment (not just one lane) <br />• Data transfers seamlessly to MlcroPAVER <br />• 2mm pixel images allows for centimeter horizontal and vertical accuracy <br />The first survey process will involve the mobile GPS vehicle taking approximately two -week's <br />time to survey the Santa Ana's street network; additionally, the vehicles drive the posted speed <br />limits. The images that are collected are taken by using Sony digital stereographic cameras (6 <br />cameras) positioned on the vehicle. The images have a resolution of 1600x1200 and are geo- <br />referenced by means of inertial GPS equipment contained within the van; images are taken <br />every 4 to 6 meters, 15 ft. intervals. <br />The quality of the imagery and its GIS / record collecting capabilities within the software <br />provided allows the technician to accurately identify the required pavement distresses defined <br />by the pavement software and the project (distresses are collected in-house). <br />Survey vehicles are equipped with digital measuring instrumentation (DMI) that will be used to <br />verify all pavement section lengths and widths. Our vehicles can be equipped with road <br />roughness rating equipment, strip mapping cameras and are set to record 360 degree street <br />imaging. <br />The survey will be performed by the Sucknom team that is experienced and trained in <br />infrastructure condition assessment using LambdaTech's "Feature Extraction" software. <br />3-9 <br />