126 Texas A&M International University C/ APPENDIX STORMWATER All Campus Site Drainage drains to the Southeast into existing drainage swales to Lake Casa Blanca. All Storm water appurtenances are maintained by the University. Curb inlets are located around the perimeter road and parking areas and convey stormwater to the south and southeast. The roadway also has open back inlets that allow stormwater to be directed to various existing swales. Mid campus storm water is conveyed via a grass lined swale and various grate inlets and located in the area and storm pipe to the south. Current campus has a small portion that sits within the 100- year floodplain. Campus is not within the 500- year floodplain. Future development should be planned outside of the 100-year floodplain or finished floor elevations raised to be above the floodplain elevations. See the attached flood plain map. Potential areas for drainage improvements at the Athletic Fields. Future expansion within the existing campus may require some reconfiguration of the drainage pattern and storm lines. Future Development should consider incorporating storm water quality ponds, bioswales and retention ponds. The proposed Business addition building (Key C) sits on top of existing inlets and those inlets will need to be relocated (see the snip below). The existing area near this proposed building has storm infrastructure which is collected and released near a swale next to the parking lot south of the Senator Judith Zaffirini Student Success Center which eventually flows into an existing storm pipe underneath the University Blvd. and sheet flows to the South of University Blvd. This existing drainage pattern can also be maintained with the proposed Business addition building. The proposed Health science Center (Key A) and proposed Nursing building (Key B) sits on existing parking lot and baseball fields which are sheet flowing to the South, crossing University Blvd and flowing towards the green belt on the South (see the snip below). The proposed Health Science Center sits on an 18” RCP storm pipe which flows towards East passes underneath the university Blvd and eventually flows into the green belt south of the Residential Learning Community buildings. This pipe will need to be re-routed. With the new improvements, we can incorporate some storm water quality ponds, bioswales and retention ponds in the Landscape areas (see the attached exhibit) and connect them to the existing storm infrastructure (or re-routed) on the University Blvd. Mid-Term Plan: The proposed Academic buildings (Key H and G) sits on existing parking lot and baseball fields which are sheet flowing to the South, crossing University Blvd and flowing towards the green belt on the South (see the snip above) (see the reference in the near-term plan). The proposed buildings sit on 18”/24” RCP storm pipes and there are couple of existing inlets next to building G which connects to the 18”/24” pipes Near-Term Plan: The existing conditions in the area near proposed renovation of the Lobby at the Student Village (Key D) and the student Housing Building at the Student Village (Key E) demolishing is sheet flowing toward the south side into the detention area (see the snip below). This existing drainage pattern needs to be maintained even after the proposed renovation.
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