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Huitt-Zollars prepared construction documents for the Baseline Road storm drain project. The <br />9'x7' box facility starts at Tamarind Avenue and drains east to outlet in Cactus Basin #3. The size <br />of the drainage infrastructure was optimized using the 2D hydraulic component of XPSWMM. <br />Drainage parameters are consistent with the Cactus Basin Drainage Study (San Bernardino <br />County Flood Control District, 2015) and the San Bernardino County Hydrology Manual. <br />A Composite Utility Plan was created based on record drawings gathered from wet and dry utility <br />companies. The Plan served as a key support to identify the most efficient horizontal and vertical <br />alignments, along with the definition of a trench detail. Coordination with DSOD was necessary to obtain <br />an encroachment permit for penetrating through the jurisdictional dam. Penetration design details include <br />1:10 concrete structures and articulated joints. The Cactus Basins provided significant flood mitigation <br />benefits to accommodate the undersized and erosion -prone Cactus Channel downstream of Baseline Road. <br />The project included the preparation of plan, specifications and estimates for the storm drain, street, and <br />utility relocation plans. A construction phasing plan was also prepared to minimize impacts on local traffic <br />and residents. <br />CLIENT CONTACT: <br />City of Rialto <br />Marcus Fuller <br />335 W. Rialto Avenue <br />Rialto, CA 92376 <br />909.820.2602 <br />RELEVANT DESIGN <br />COMPONENTS: <br />• Storm drain <br />improvements <br />• Utility relocations <br />• Street improvements and <br />design <br />• Environmental impact <br />report <br />• Water quality <br />HUNT MOLIARS <br />City of Santa On -Call Water Resources Engineering Services RFP No. 22-002 11 <br />