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Item 16 - NarrativeProject Narrative www.perkinswill.com CASE NUMBER ZA21-0050 Methodist Southlake Medical Center Emergency Department and Nuclear Medicine Expansion 421 East Highway 114 Southlake Tx 19-Jul-21 (REV.) Project Scope: This Site Plan submittal applies only to Lot 1R. This Site Plan submittal complies with zoning overlay S-P-2. Methodist Healthcare System has proposed a 6000 SF, one story addition to the existing hospital to accommodate a needed expansion of the Emergency Department (ED) and to provide new nuclear medicine facilities. The current ED provides [1] triage space and [2] treatment areas. The new project scope increases the ED capacity with [12] treatment areas, including a fast-track clinic, trauma room, isolation room, psych holding room, and other support spaces. The medicine suite in an expansion of the existing radiology imaging department will include a new procedure room and hot lab, [2] holding bays and support spaces. Phasing: The project will be constructed in two phases with each phase substantially complete as noted below: Pre-phase 1: Some minor remodeling scope will be necessary to prepare the existing ED for continued operation during construction. Phase 1: New construction of the building addition to include the nuclear medicine suite, new trauma, isolation and exam rooms and requisite support Page 2 of 5 Case No. ZA21-0050 Date: 7.19.2021 Re:Methodist Southlake ED Expansion spaces. The existing ED will remain operation al during the construction of Phase I. At the completion of Phase I the owner will move staff and equipment into the new Phase I area, which will become the temporary operational ED for the hospital. Phase 2: This phase consists of the renovation of the existing ED. This phase will include a new fast track clinic consisting of a new triage room and [[3] exam/treatment rooms, waiting room and reception office, [2] additional exam rooms and requisite support spaces. Post Phase 2: At the completion of Phase 2, temporary facilities between Phases 1 and 2 will be removed and finishes restored. Owner will then occupy and operate the entire new facility as a single Emergency Department. Site Demolition/Construction: To accommodate the new facility, the site must be prepared by selectively demolishing portions of the exterior façade and site. The site demolition requires contiguous removal of existing sidewalks, bike racks, trees, curbs and pavement within the construction area. Also, scoped in the demolition will be the removal of a hedge row along the loading dock and [5] trees. The new site plan application recognizes that demolished trees and shrubs must be replaced on the site. This application includes a landscaping plan to clarify the locations of replacement landscaping scope. Parking: Demolition will remove [3] existing parking spaces, including [1] accessible parking space to make space for the new construction. These spaces will not be replaced in the new construction. There are currently 738 parking spaces on site based on a confirmation survey taken 17-Jun-21. Of these 376 are at grade level in five parking lots. The remaining 362 are in a four-level parking garage. Per TDLR regulations, a minimum of [9] spaces, or 2% of the total parking available must be accessible spaces. Calculated, we are required to provide 15 spaces on site to accommodate the full 738 spaces on site. The current site provides 30 accessible spaces, excluding accessible spaces in the parking garage. Page 3 of 5 Case No. ZA21-0050 Date: 7.19.2021 Re:Methodist Southlake ED Expansion Required parking, based on the zoning ordinance for the property (Southlake Ordinance No. 480-527) requires [3] spaces per licensed hospital bed. The current hospital contains [54] patient beds, which would require 162 parking spaces for the hospital. The new addition does not add licensed beds to the hospital, and therefore, does not increase the parking requirements. The Medical Office Building (MOB) on site is indicated to be 80,000 SF, covering four levels. Zoning requires [1] space per 250 SF, so [320] spaces are required for the MOB. Of these, [8] are required to be accessible The total number of spaces required is 482 (162 + 320 = 482). Provided on the full campus are 738 spaces, so there are 256 surplus spaces. The [3] spaces not replaced leaves a surplus of 253 spaces. Traffic: 1. Project exceeds 100 parking spaces per driveway, calculated thus: 738 parking spaces / 3 driveway entrances = 246 > 100. 2. The Traffic Impact Analysis for the original development remains unchanged by this Site Plan request. City has this document on file. Façade: The new building walls will be constructed similarly to the existing building, but will be outfitted with a continuous exterior insulation board for greater thermal performance. The new design will aesthetically match the original building. The coping detail at the top of the parapets will match and generally align with existing coping details. The existing stone veneer wainscot will also be extended onto the new exterior walls. The project will require a new air handling unit to be installed on the roof. The air handler will be enclosed with a roof screen to be constructed with the same plaster veneer used elsewhere on the design. The new screen will align with and abut the existing roof screen that is also concealing mechanical rooftop-mounted equipment. Page 4 of 5 Case No. ZA21-0050 Date: 7.19.2021 Re:Methodist Southlake ED Expansion Canopies: Two new drop-off areas will be crafted and dedicated to Patient Entrance and Ambulance Entrance. Both will have cantilevered canopies to provide some protection from weather. These canopies will be constructed to generally replicate the design concepts of the existing cantilevered canopy. Neither will encroach on the adjacent fire lane. Roofing: The roofing system consists of a sloped steel structural frame topped with a light weight insulating concrete assembly to provide a minimum of R-30 insulation. This will meet the requirements of the International Energy Conservation Code. The waterproofing element will be a single-ply TPO roof in a color compatible with the building facades. While the existing building has a series of roof gardens, this new expansion will not include expansion of that amenity. Site Utilities: Within the project scope we will be making connections to existing storm, sanitary and water lines within the fire lane and utility easement between the hospital expansion area and the existing parking garage. Proposed building addition is located within Drainage Area “L”. Improvements associated with proposed building will follow existing drainage patterns and will not increase runoff noted on this plan. Refer to the Site Plan documentation provided with this application. Landscaping: New landscaping plans have been developed to provide new replacement plantings to satisfy previous landscape requirements. No modifications are necessary to landscape buffers under this proposal. Miscellaneous: Decontamination Tank: The new ED will include a decontamination room that provides emergency showers. The floor drain in this room leads to an external decontamination tank to be installed below grade under the Page 5 of 5 Case No. ZA21-0050 Date: 7.19.2021 Re:Methodist Southlake ED Expansion sidewalk immediately east of the new addition. This tank will provide a manhole south of the rear exit door and will allow the tank to be serviced by a truck parked in the loading dock, keeping the fire lane clear. Signage: a new freestanding stone veneer divider wall will be installed between the Emergency Patient Entrance and the Ambulance Entrance to separate each zone. Illuminated signage will be provided on each side of this wall to identify the two zones. In addition, the design will provide for any code-required illuminated signage on the canopies or building entrances. Since the new ED is in the same location as the current ED, we do not anticipate any changes to any site signage directing patients from the public streets to the ED; however, if changes to these signs are required by other Authorities Having Jurisdiction, these signage adjustments will be incorporated into the project’s construction documents. END OF PROJECT NARRATIVE