Provide GIS LiDAR Data, DTM, and DSM Services

McHenry County issued a competitive Request for Proposals (RFP 22‑4836) seeking a vendor to provide comprehensive GIS LiDAR services, including acquisition of LiDAR point‑cloud data, production of Digital Terrain Model (DTM) and Digital Surface Model (DSM), generation of 1‑foot contour lines, and delivery of associated geospatial deliverables. The scope obligates the vendor to collect LiDAR over all tiles defined in the “LidarTile2022” shapefile, meet USGS QL‑1 quality standards (≥ 8 pts/m²), and produce hydro‑enforced DEMs, breaklines, building footprints, and optional ancillary products such as culvert extraction and erosion‑vulnerability assessments. The contract is a fixed‑price award, with proposals due 14 Feb 2022, and was ultimately awarded to Ayres Associates. Mandatory submission documents include pricing, references, certifications, and ownership forms. • Required deliverables: raw LAS files, classified point clouds, DTM, DSM, 1‑ft contour shapefiles, breaklines, metadata, and optional products. • Technical specs: NAD83 Illinois State Plane East, NAVD 88 vertical datum, vertical RMSE ≤ 0.3 ft, horizontal RMSE ≤ 2.2 ft, no data voids. • Evaluation criteria: qualifications (up to 25 pts), compliance (up to 40 pts), price (up to 25 pts), references (up to 10 pts).