21 Technical Memorandum — original pdf

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10431 Morado Circle, Suite 300  Austin, Texas 78759  512-617-3100  fax 512-617-3101 www.freese.com TECHNICAL MEMORANDUM TO: Reem Zoun, PE, CFM FROM: SUBJECT: Garrett Johnston, PE, CFM, GISP Kim Patak, PE, CFM, ENV SP CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) PROJECT: AU316288 – WBO WMP Phase II DATE: February 9, 2018 CC: Rupali Sabnis, PE, CFM 1.00 BACKGROUND DRAFT THIS DOCUMENT IS RELEASED FOR THE PURPOSE OF INTERIM REVIEW UNDER THE AUTHORITY OF JOHN GARRETT JOHNSTON, P.E., TEXAS NO. 115779 ON FEBRUARY 9, 2018. IT IS NOT TO BE USED FOR CONSTRUCTION, BIDDING OR PERMIT PURPOSES. FREESE AND NICHOLS, INC. TEXAS REGISTERED ENGINEERING FIRM F- 2144 The City of Austin (COA) is currently in the process of updating the land development code through a process called CodeNEXT. As part of this effort, the City’s Watershed Protection Department (WPD) is considering changes to flood mitigation requirements. To quantify the flood risk reduction effects of these potential criteria changes, Freese and Nichols, Inc. (FNI) was retained by WPD to perform a case study in the West Bouldin Creek (WBO) watershed. The study area for this task centers on Del Curto Road near South Lamar Boulevard, a primarily residential area that receives runoff from a combination of residential and commercial properties upstream. The study area is generally bounded by Ann Arbor Avenue, Rabb Glen Street, Thornton Road, and Cinnamon Path. Storm runoff from the area is collected into a storm drain system which outfalls just downstream of Thornton Road into a channel that drains to West Bouldin Creek. WPD has received several reports of flooding in this area, as shown in the attached figures. 2.00 HYDROLOGIC AND HYDRAULIC MODELING The study area was evaluated using Innovyze’s InfoWorks Integrated Catchment Modeling (ICM) 7.0 software, the City’s standard two-dimensional (2D) modeling platform. It was chosen for the study area due to its ability to evaluate a complex combination of storm drain systems and surface flow patterns. 2.01 DATA RECEIVED FROM WPD The following information was provided by the City’s WPD for use in the evaluation. 1. Flooding Complaints. WPD provided a point shapefile detailing 68 flood complaints in the Del Curto area. These are generally categorized as building, street, and yard flooding and include addresses and detailed notes. Refer to the attached figures for a depiction of locations and flood type. 2. ICM Models. The initial ICM models that FNI received, including a rain-on-mesh model and a draft catchment-based (SCS) model, were developed in-house by the WPD. The rain-on-mesh model CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 2 of 10 could be used for simulations; however, the SCS model appeared to be an early version of the rain- on-mesh model and could not be used for simulations without modifications. Therefore, FNI modified the ICM model for use in this analysis. 3. StormCAD model WBO-87735. The provided ICM model was missing a stretch of 42” and 2-30” RCP between Del Curto and Kinney Rd. WPD provided a StormCAD model of this system and FNI incorporated the necessary changes into the ICM model at WPD’s request. 4. Storm Drain As-Builts. FNI received storm drain as-builts for the study area, which were used along with COA DIG data to confirm curb inlet sizes for the storm drain systems within the model. 5. Hydrologic Parameters. FNI also received hydrologic parameter information, including drainage areas, time of concentration paths, and CodeNEXT zoning, which were used to make updates to the model. The WPD provided the time of concentration paths and CodeNEXT zoning in shapefile format. Drainage areas were included with the provided ICM model. The CodeNEXT zoning shapefile is split into three groups: A (single-family residential), B (public ROW), and C (commercial and multi-family residential). Three different percent impervious cover (IC) fields were also included in the zoning shapefile representing existing IC, current maximum IC, and proposed maximum IC. “Existing” represents conditions today, “current maximum” represents the allowed maximum IC under the City’s current code, and “proposed maximum” represents the allowed maximum IC under the proposed CodeNEXT changes. These values are unique to each parcel to reflect the two future development scenarios for each lot. 2.02 MODEL MODIFICATIONS FNI started with the existing rain-on-mesh model, which had a more detailed 1D storm drain network than the draft SCS model. FNI then replaced the rain-on-mesh infiltration zones with subcatchments from the draft SCS model. However, these subcatchments were missing necessary hydrologic parameters, including time of concentration (TC), curve number (CN), and percent impervious cover (IC) values. WPD provided a TC flowpaths shapefile. The attribute table included the slopes and Manning’s roughness values for the sheet and shallow concentrated flowpaths, along with the overall TC in minutes as calculated by the SCS TR-55 method. FNI verified these calculations and entered their values into the ICM model. FNI calculated base CN values according to COA criteria, based on the underlying hydrologic soil group (HSG) listed in USDA Web Soil Survey data. Because the most prevalent HSG in this area is D, the base CN for the majority of subcatchments in the ICM model was set to 80. FNI calculated weighted existing IC values based on the CodeNEXT zoning shapefile provided by WPD and entered these values into the ICM model. FNI also made the following additional changes to the hydraulic configuration of the model. The purpose of these changes was to increase the accuracy of the existing model results. FNI’s scope included general checks for reasonable values, but did not include review or adjustment of model configuration details—for CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 3 of 10 example, the source or accuracy of subcatchment delineations, pipe sizes, flowlines, or general storm drain network topology. 1) The provided ICM model did not have an assigned coordinate system. Even after the coordinate system was set to NAD 1983 State Plane Texas Central, the exported network elements and results appeared offset by approximately 20 feet relative to aerials and other base data. Network elements were also offset from the underlying ICM ground model TIN, including nodes, conduits, mesh zones, roughness zones, and building polygons. The root issue is that the Texas state plane projection is defined in US survey feet, while the network was originally created using international feet. FNI scaled each element coordinate by a factor of 1.000002 to correct this misalignment. The realignment of the 2D mesh and buildings relative to the ground model TIN required remeshing. All 2D node ground elevations were also revised to match the new mesh. The subcatchments, however, were not affected by this issue and were not scaled. 2) FNI modified the building footprint polygons in the model to disallow flow conveyance over the footprints. The porous polygons representing buildings in the WPD model had a crest level of 0.5 feet, meaning that runoff could flow unrestricted over the building footprint after building up to 6 inches of depth on the surface. In reality, some amount of runoff could be stored in each structure, but accurately representing this volume is difficult and can be subjective. FNI chose a more conservative approach and switched the polygon crest level to infinite. This instead forces surface runoff to travel around each building. 3) The provided ICM model simulated curb inlets using 2D nodes connected directly to the surface. This approximates weir flow through a curb inlet as a circular manhole shaft open to the 2D surface. To more precisely model the behavior of each curb inlet, and to account for the curb opening height for orifice flow conditions, FNI added weir links just downstream of each 2D node. FNI then set the weir length equal to the inlet length listed in COA DIG data or provided storm drain as-builts. A curb opening height of 0.5 feet was also entered for each inlet. 4) FNI also converted several stored manhole types to sealed to prevent lost surcharge volume during the simulation, and made other minor adjustments to node parameters at the outfall to smooth oscillations in hydrographs and stabilize results. 5) FNI adjusted several pipe flowlines that were found to be set near ground level in the middle of a storm drain trunk alignment. These flowlines were lowered to match adjacent flowlines and create a continuous profile. Refer to the attached Figure A-1 for an overview of the model limits, including subcatchments, 2D zone limits, and storm drain alignment. CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 4 of 10 2.03 CODENEXT SCENARIO SUMMARY To begin evaluating the effect of CodeNEXT on flooding extents and pipe capacity, WPD requested that FNI analyze four scenarios as summarized in Table 1 below. Table 1. Scenario Summary Scenario Scenario 1: Existing (Average IC: 51%) Scenario 2: Existing Greenfield (Average IC: 26%) Scenario 3: Future Greenfield (Average IC: 33%) Scenario 4: Future (Average IC: 58%) Impervious Cover (IC) Assumption Group A Single-Family Residential (38% of total area) Existing (IC = 31%) Existing (IC = 31%) Maximum (IC = 47%) Maximum (IC = 47%) Group B Public ROW (22% of total area) Existing (IC = 65%) Existing (IC = 65%) Existing (IC = 65%) Existing (IC = 65%) Group C Commercial/Multi- Family Residential (40% of total area) Existing (IC = 63%) Greenfield (IC = 0%) Greenfield (IC = 0%) Existing (IC = 63%) Scenario 1 represents existing conditions in the watershed as described above. Scenario 2 represents existing conditions with greenfield conditions, in which the impervious cover for CodeNEXT Group C parcels (commercial and multi-family) is reduced to zero. This represents a best-case scenario for the proposed CodeNEXT changes, in which all Group C parcels (about 40% of the total drainage area) redevelop and are required to detain to greenfield conditions. Group B parcels (public ROW) would remain unchanged. To model this scenario, the impervious cover in each Group C parcel was set to zero and the parcels were intersected with the subcatchments to calculate new weighted impervious cover values. The Group C parcels are highlighted on the attached figures, beginning with Figure A-1. Compared with Scenario 1, the average impervious cover for the basin as a whole decreased by 25.0 points—from 51.4% to 26.4%. The times of concentration for Scenario 2 were also updated using the provided CodeNEXT Group C parcels. FNI drew alternate flowpaths for seven subcatchments, taking the new Group C pervious areas into account. Analysis of alternate flow paths showed that sheet flow length and roughness have the greatest impact on overall TC, FNI flagged remaining basins containing Group C parcels with paved sheet flow or sheet flow under 100 feet in length. For Scenario 2, these sheet flow lengths were increased to 100 feet and set to a roughness of 0.15. In addition, any paved sheet flow or paved shallow concentrated flowpath component that traversed a Group C parcel was converted to unpaved. This increased the overall TC for 19 subcatchments by between 0.2 and 8.4 minutes. The average increase in TC for these subcatchments was 3.6 minutes. (The TC slopes were not changed for Scenario 2 because pre-development topography data is generally provided at a coarser level of detail, and because determining a reasonable pre-development slope can be highly subjective.) CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 5 of 10 Scenario 3 represents future conditions with greenfield conditions. This assumes Scenario 2 “greenfield” conditions for Group C parcels and proposed maximum impervious cover for Group A parcels (single-family residential). This represents the proposed CodeNEXT maximum impervious cover for the watershed with a greenfield policy adopted for Group C parcels. To model this scenario, the impervious cover for each Group C parcel was set to zero and the impervious cover for each Group A parcel was set to the proposed CodeNEXT maximum. Compared with Scenario 1, the average impervious cover for the basin as a whole decreased by 18.9 points—from 51.4% to 32.5%. Impervious cover for 15 individual subcatchments increased by an average of 10.3 points due to residential development, but these increases were offset by the greenfield parcels. Finally, Scenario 4 represents future conditions, in which all single family parcels redevelop to CodeNEXT maximum impervious cover, with no greenfield flood mitigation for the Group C (commercial and multifamily) parcels. To model this scenario, FNI used existing impervious cover for all parcels except Group A parcels, which were set to the proposed CodeNEXT maximum (approximately 47%, similar to the current maximum). Compared with Scenario 1, the average impervious cover for the basin as a whole increased by 8.7 points—from 51.4% to 57.5%. As an additional point of comparison, the “future greenfield” conditions of Scenario 3 would reduce the “future” Scenario 4 average impervious cover by 30.1 points – from 57.5% to 32.5%. ICM results for Scenarios 1–4 were analyzed for the 2-, 10-, 25-, and 100-year frequency storm events. Tables 5 and 6 in the appendix provide SCS hydrology inputs and outputs for each storm and scenario. 2.04 RESULTS FOR SCENARIO 1: EXISTING CONDITIONS During the 100-year event, the maximum 2D inundation extents cover the length of both branches of the storm drain system. For the most part, surface flooding depths are under 6 inches except for a stretch of historic channel where runoff concentrates, beginning at Bluebonnet Lane and crossing Del Curto Road, Kinney Road, and Thornton Road before entering West Bouldin Creek. The maximum 100-year depth in the channel exceeds 5.0 feet between Kinney and Thornton Road. During the 2-year event, the maximum 2D inundation extents are limited to Del Curto, Kinney, and Thornton Roads, with a maximum depth of approximately 4.1 feet. The attached Figure S1-1 shows the approximate level of service of each storm drain pipe in the network, ranging from less than 2-year to greater than 100-year. This map was generated using a 1D-only copy of the S1 ICM network, with all 2D nodes converted to sealed nodes. This forces all flow into the pipe system for a direct comparison of peak flow at the downstream end to Manning’s pipe capacity. Each pipe in Figure S1-1 is color-coded to denote the storm event during which its capacity is exceeded. Refer to the attached Figures S1-2 through S1-5 for Scenario 1 inundation maps. The red structures in each map denote whether the structure encounters an adjacent water surface elevation (WSE) greater than its finish floor elevation (FFE). The FFE at each structure was calculated by adding 6 inches to the ground surface TIN at the structure centroid. To be counted as “at risk of flooding” during the storm event, the CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 6 of 10 adjacent depth of water on the surface must also be greater than 6 inches. By this measure, Table 2 on page 7 denotes the number of structures at risk of flooding during each storm event. Table 3 on page 7 presents the peak flow rates at Del Curto Road, Kinney Road, and Thornton Road. Peak pipe flow was measured at the downstream end of each pipe, and peak flow on the 2D surface was measured through a cross section along each road centerline. 2.05 RESULTS FOR SCENARIO 2: EXISTING CONDITIONS WITH GREENFIELD During all analyzed storm events, the Scenario 2 hydraulic results are similar to the Scenario 1 hydraulic results. Maximum inundation depths are generally reduced by no more than 0.4 ft during all storms. Although the percent impervious cover decreased by 26.6 percentage points, the base soil CN of 80 for the majority of the basins limits the amount of infiltration that can occur in nominally pervious areas, especially during larger storm events. Given the high CN, changes in TC would be expected to have a greater impact on peak flow. The increases in TC, however, are modest and have limited impact on peak flooding depths. Table 2 on page 7 compares the number of structures at risk of flooding under each scenario and storm event. Note that the reductions shown primarily reflect structures that are flooded by less than 1 inch under Scenario 1. At these structures, the minor WSE reductions in Scenario 2 can be just enough to get below the assumed FFE. Table 3 on page 7 presents a peak flow comparison. Peak pipe flow was measured at the downstream end of each pipe, and peak flow on the 2D surface was measured through a cross section along each road centerline.. The Scenario 2 flow reductions during the 2-year storm event range between 17.8% and 23.4%. In larger storms, the effect of assumed greenfield conditions become less pronounced, with 100-year reductions ranging between 7.3 and 12.6%. Figure S2-1 shows the approximate level of service of each storm drain pipe in the network. Refer to the attached Figures S2-2 through S2-5 for Scenario 2 inundation maps. In each map, each structure with a reduction in flood depth of more than 1 inch is shown in green. In general, reductions at these structures are no more than 1–2 inches. For the most part, these capacities are identical to those provided as part of Scenario 1. Finally, the attached Figures S2-6 through S2-9 show the WSE differential across the 2D mesh for each storm event. CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 7 of 10 2.06 RESULTS FOR SCENARIO 3: FUTURE CONDITIONS WITH GREENFIELD During all storm events, Scenario 3 (future greenfield) results are similar to Scenario 2 (current greenfield). Maximum inundation depths are generally increased by no more than 0.2 ft during all storms. This indicates that future single-family residential development has a very limited impact on peak flooding conditions. Tables 2, 3, and 4 summarize the results for Scenario 3 in the same way as Scenario 2. During the 2-year event, Scenario 3 causes increases in peak flow of between 3.1% and 5.1% compared to Scenario 2. In larger storms, this effect becomes less pronounced, with 100-year increases ranging between 0.6% and 1.1%. The attached Figure S3-1 shows the approximate level of service of each storm drain pipe in the network. Refer to the attached Figures S3-2 through S3-5 for Scenario 3 inundation maps. In each map, structure with an increase in flood depth of more than 1 inch is shown in dark red. Finally, the attached Figures S3-6 through S3-9 show the WSE differential across the 2D mesh for each storm event. 2.07 RESULTS FOR SCENARIO 4: FUTURE CONDITIONS As demonstrated in the Scenario 3 results, future single-family residential development in this watershed has a very limited impact on peak flooding conditions. Comparing Scenario 4 (future conditions) with Scenario 1 (existing conditions) shows the same result. Maximum inundation depths are generally increased by no more than 0.12 ft during all storms, with most increases under 0.04 ft. Tables 2, 3, and 4 summarize the results for this scenario in the same way as previous scenarios. During the 2-year event, Scenario 3 causes increases in peak flow of between 1.2% and 3.2% compared to Scenario 2. In larger storms, this effect becomes less pronounced, with 100-year increases ranging between 0.3% and 0.7%. The attached Figure S4-1 shows the approximate level of service of each storm drain pipe in the network. Refer to the attached Figures S4-2 through S4-5 for Scenario 3 inundation maps. Finally, the attached Figures S3-6 through S3-9 show the WSE differential across the 2D mesh for each storm event.  Table 2. Structure Risk Comparison No. of Structures at Risk of Flooding Return Period 2-year 10-year 25-year 100-year S1 16 29 44 61 S2 11 24 40 58 S3 11 24 40 58 S4 16 29 44 62 Table 3. Peak Flow Comparisons Return Period Peak Pipe Flow (cfs) Peak Surface Flow (cfs) Peak Total Flow (cfs) S1 S2 S3 S4 S1 S2 S3 S4 S1 S2 S3 S4 Change in Peak Total Flow S1→S2 S1→S3 S1→S4 S4→S3 2-year 10-year 25-year 100-year 91.7 108.5 109.1 110.3 70.3 108.1 108.8 109.8 72.5 108.2 108.8 109.8 92.4 108.5 109.1 110.3 0.3 82.3 156.1 243.0 2-year 10-year 25-year 100-year 87.3 101.8 103.0 103.9 75.6 101.3 102.5 103.6 77.1 101.4 102.5 103.6 88.1 101.9 103.0 103.9 34.4 115.8 189.7 308.7 2-year 10-year 25-year 100-year 105.6 146.7 162.8 190.6 87.1 137.0 152.9 180.8 90.3 138.6 154.4 182.1 108.6 148.1 164.1 191.8 110.6 188.8 251.7 368.8 Del Curto Road (36” RCP Storm Drain) 0.0 53.8 104.6 198.7 0.5 84.5 157.2 243.9 91.7 190.5 264.9 352.7 0.0 57.7 106.3 200.4 Kinney Road (2-30” RCP Storm Drain) 121.8 217.6 292.7 412.4 36.1 118.8 192.5 311.0 20.2 88.7 154.1 259.3 22.9 91.7 158.1 262.5 Thornton Road (60” RCP Outfall) 210.7 88.8 314.1 170.8 389.2 226.5 529.4 324.2 114.2 192.2 254.7 371.7 93.7 174.8 230.5 327.8 70.3 161.8 213.3 308.1 72.5 165.8 215.0 309.9 92.9 192.7 266.0 353.7 -23.4% -15.1% -19.5% -12.6% -21.0% -13.0% -18.8% -12.1% 1.2% 1.1% 0.4% 0.3% -22.0% -14.0% -19.2% -12.4% 95.9 190.0 256.6 362.7 99.8 193.0 260.6 365.9 124.1 220.6 295.4 414.6 -21.3% -12.7% -12.3% -12.0% -18.0% -11.3% -10.9% -11.3% 1.9% 1.4% 1.0% 0.6% -19.6% -12.5% -11.8% -11.7% 173.1 302.5 365.3 491.0 181.9 306.7 370.6 496.2 217.4 319.6 394.0 533.4 -17.8% -3.7% -6.1% -7.3% -13.7% -2.4% -4.8% -6.3% 3.2% 1.7% 1.2% 0.7% -16.3% -4.0% -5.9% -7.0% CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 9 of 10 Table 4. Flood Reductions Return Period No. of Buildings with Change in Inundation Depth Change > 0.0 ft Change > 0.1 ft Maximum Change (ft) Average Change (ft) Range of Change (ft) 2-year 10-year 25-year 100-year 2-year 10-year 25-year 100-year 2-year 10-year 25-year 100-year 2-year 10-year 25-year 100-year 16 28 41 50 -0.16 -0.25 -0.40 -0.22 -0.13 -0.24 -0.39 -0.22 S1 (Existing) → S2 (Greenfield) 7 12 20 32 S1 (Existing) → S3 (Future Greenfield) 6 16 7 25 16 38 30 46 S1 (Existing) → S4 (Future) 1 0 0 0 S4 (Future) → S3 (Future Greenfield) -0.29 8 16 -0.31 10 28 -0.39 20 40 -0.23 31 49 0.12 0.02 0.02 0.01 15 26 30 27 -0.10 -0.14 -0.11 -0.10 -0.08 -0.14 -0.11 -0.11 0.16 0.01 0.01 0.01 -0.06 to -0.16 -0.01 to -0.25 -0.01 to -0.40 -0.01 to -0.22 -0.05 to -0.13 -0.01 to -0.24 -0.01 to -0.39 -0.01 to -0.22 0.01 to 0.12 0.01 to 0.02 0.01 to 0.02 0.01 to 0.01 -0.23 -0.14 -0.11 -0.10 -0.05 to -0.29 -0.01 to -0.31 -0.01 to -0.39 -0.01 to -0.23 Table 4 above summarizes the changes in flooding depths between each scenario. Table 7 in the attached appendix provides a detailed list of inundation depths and addresses for each building under each storm and scenario. The geodatabase included with this memo includes all features used to generate the attached figures. It includes the exported ICM model results, differential WSE triangles, a storm drain level-of-service feature class, and a building feature class. The building feature class includes the maximum adjacent WSE, maximum adjacent depth, and calculated inundation depth for each scenario and storm event. The attached figures were generated in ArcMap using definition queries of this single feature class. CodeNEXT Flood Mitigation Analysis (West Bouldin/Del Curto) 2/9/2018 - Draft Page 10 of 10 3.00 CONCLUSION FNI conducted detailed hydraulic modeling to evaluate the effect of returning the proposed CodeNEXT Group C parcels to greenfield conditions. FNI also evaluated the effect of future single-family residential development, both with and without Group C greenfield conditions. This modeling was based on previously- developed models provided by WPD. These models were reviewed by FNI to check for general reasonableness of parameters, to add weirs representing inlet geometry, and to update background layers with the City’s 2013 planimetric data. Scenario 2 (greenfield conditions) reduced percent impervious cover throughout the watershed and increased times of concentration. This reduced peak flows at Del Curto, Kinney, and Thornton by between 17.8% and 23.4% in the 2-year storm event, and between 7.3% and 12.6% in the 100-year storm event. Peak flooding depths throughout the model were generally reduced by no more than 0.4 ft. Scenario 3 (future greenfield conditions) accounted for maximum single-family residential development. Additional impervious cover from residential development was more than offset by the Group C greenfield conditions. This decreased average impervious cover in the watershed relative to Scenario 1, with no changes to Scenario 2 times of concentration. Compared with Scenario 1, this future development decreased peak flows at Del Curto, Kinney, and Thornton by between 16.3% and 22.0% in the 2-year storm event, and between 6.3% and 12.1% in the 100-year storm event. Peak flooding depths throughout the model were generally decreased by no more than 0.4 ft. Scenario 4 (future conditions) assumed existing conditions for Group C parcels and accounted for maximum single-family residential development. This increased the impervious cover in the watershed relative to Scenario 1, with no changes to Scenario 1 times of concentration. Compared with Scenario 1, this future development increased peak flows at Del Curto, Kinney, and Thornton by between 1.2% and 3.2% in the 2- year storm event, and between 0.3% and 0.7% in the 100-year storm event. Peak flooding depths throughout the model were generally increased by no more than 0.12 ft. De Verne St Arp dale St e v A nt u o m ra a P M o ntclaire e v A r o b Ar n n A S t Frazier Ave e h Av dric o o G R a bb Gle n St Burris Cir L a m a r B l v d 0 200 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet e v d A xfor O L a C a s a D r d a r B lv m a L D ic k s o n D r Storm Drain Level of Service > 100-yr storm event < 100-yr storm event < 25-yr storm event < 10-yr storm event < 2-yr storm event Parcel Groups Group C (Commercial/ Multifamily) Parcels Date Saved: 1/26/2018 3:24 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S1-1 Level of Service.mxd I v a L n d y R e n Kin D e l c r e s t D r Rd Curto l e D d Dr n uthla o S d n R nto or h T Ravey St The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. K C B i e c v r e S f o l e v e L 1 - 1 S : e m a N l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ s n o i t i d n o C g n i t s i x E : 1 o i r a n e c S T X E N e d o C e c i v r e S f o l e v e L n i a r D m r o t S . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S1-1 Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet J G J y 2 n o i t a d n u n I 2 - 1 S : e m a N 0 200 e v d A xfor O L a m a r B l v d !( De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( !( !( !( !( West Bouldin Creek Tributary d n R nto or h T Ravey St !( !( !( !( The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. D ic k s o Limits of 2D Zone n Storm Drain D r Flooding Complaints !( Building !( Yard !( Street Parcel Groups Group C (Commercial/ Multifamily) Group A, B Depth of Inundation (2-Year) 1 - 6" 6 - 12" 1 - 2' 2 - 4.1' Buildings at Risk of S1 Flooding (2-Year) (16 buildings) Date Saved: 1/28/2018 9:25 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S1-2 Inundation 2y.mxd . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D s n o i t i d n o C g n i t s i x E : 1 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S1-2 Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet J G J y 0 1 n o i t a d n u n I 3 - 1 S : e m a N 0 200 e v d A xfor O L a m a r B l v d !( De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( !( !( !( !( West Bouldin Creek Tributary d n R nto or h T Ravey St !( !( !( !( The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. D ic k s o Limits of 2D Zone n Storm Drain D r Flooding Complaints !( Building !( Yard !( Street Parcel Groups Group C (Commercial/ Multifamily) Group A, B Depth of Inundation (10-Year) 1 - 6" 6 - 12" 1 - 2' 2 - 4.4' Buildings at Risk of S1 Flooding (10-Year) (29 buildings) Date Saved: 1/28/2018 9:25 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S1-3 Inundation 10y.mxd . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D s n o i t i d n o C g n i t s i x E : 1 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S1-3 Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet J G J y 5 2 n o i t a d n u n I 4 - 1 S : e m a N 0 200 e v d A xfor O L a m a r B l v d !( De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( !( !( !( !( West Bouldin Creek Tributary d n R nto or h T Ravey St !( !( !( !( The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. D ic k s o Limits of 2D Zone Storm Drain Alignment n D r Flooding Complaints !( Building !( Yard !( Street Parcel Groups Group C (Commercial/ Multifamily) Group A, B Depth of Inundation (25-Year) 1 - 6" 6 - 12" 1 - 2' 2 - 4.7' Buildings at Risk of S1 Flooding (25-Year) (44 buildings) Date Saved: 1/28/2018 9:25 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S1-4 Inundation 25y.mxd . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D s n o i t i d n o C g n i t s i x E : 1 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S1-4 Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir 0 200 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet e v d A xfor O L a m a r B l v d !( De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( !( !( !( !( West Bouldin Creek Tributary d n R nto or h T Ravey St !( !( !( !( The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. D ic k s o Limits of 2D Zone Storm Drain Alignment n D r Flooding Complaints !( Building !( Yard !( Street Parcel Groups Group C (Commercial/ Multifamily) Group A, B Depth of Inundation (100-Year) 1 - 6" 6 - 12" 1 - 2' 2 - 5.0' Buildings at Risk of S1 Flooding (100-Year) (61 buildings) Date Saved: 1/28/2018 9:25 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S1-5 Inundation 100y.mxd J G J y 0 0 1 n o i t a d n u n I 5 - 1 S : e m a N l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ s n o i t i d n o C g n i t s i x E : 1 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S1-5 De Verne St Arp dale St e v A nt u o m ra a P M o ntclaire e v A r o b Ar n n A S t Frazier Ave e h Av dric o o G R a bb Gle n St Burris Cir L a m a r B l v d 0 200 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet e v d A xfor O L a C a s a D r d a r B lv m a L D ic k s o n D r Storm Drain Level of Service > 100-yr storm event < 100-yr storm event < 25-yr storm event < 10-yr storm event < 2-yr storm event Parcel Groups Group C (Commercial/ Multifamily) Parcels Date Saved: 1/26/2018 3:24 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S2-1 Level of Service.mxd I v a L n d y R e n Kin D e l c r e s t D r Rd Curto l e D d Dr n uthla o S d n R nto or h T Ravey St The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. K C B i e c v r e S f o l e v e L 1 - 2 S : e m a N l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C e c i v r e S f o l e v e L n i a r D m r o t S . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-1 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-2 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-3 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-4 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-5 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S2 Decrease from S1 WSE (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C 1 S h t i w 2 S f o l a i t n e r e f f i D r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-6 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S2 Decrease from S1 WSE (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C 1 S h t i w 2 S f o l a i t n e r e f f i D r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-7 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S2 Decrease from S1 WSE (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C 1 S h t i w 2 S f o l a i t n e r e f f i D r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-8 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S2 Decrease from S1 WSE (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G : 2 o i r a n e c S T X E N e d o C 1 S h t i w 2 S f o l a i t n e r e f f i D r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S2-9 De Verne St Arp dale St e v A nt u o m ra a P M o ntclaire e v A r o b Ar n n A S t Frazier Ave e h Av dric o o G R a bb Gle n St Burris Cir L a m a r B l v d 0 200 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet e v d A xfor O L a C a s a D r d a r B lv m a L D ic k s o n D r Storm Drain Level of Service > 100-yr storm event < 100-yr storm event < 25-yr storm event < 10-yr storm event < 2-yr storm event Parcel Groups Group C (Commercial/ Multifamily) Parcels Date Saved: 1/26/2018 3:24 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S3-1 Level of Service.mxd I v a L n d y R e n Kin D e l c r e s t D r Rd Curto l e D d Dr n uthla o S d n R nto or h T Ravey St The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. K C B i e c v r e S f o l e v e L 1 - 3 S : e m a N l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C e c i v r e S f o l e v e L n i a r D m r o t S . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-1 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-2 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-3 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-4 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-5 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( D ic k s o !( !( n D r Parcel Groups S3 Decrease from S1 WSE (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 1 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-6 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S3 Decrease from S1 WSE (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 1 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-7 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S3 Decrease from S1 WSE (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 1 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-8 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S3 Decrease from S1 WSE (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 1 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-9 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S3 Decrease from S4 WSE (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 4 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-10 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( !( s k o D ic n D r !( Parcel Groups S3 Decrease from S4 WSE (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 4 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-11 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( D ic k s o !( !( n D r Parcel Groups S3 Decrease from S4 WSE (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 4 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-12 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L D ic Flooding Complaints !( !( !( n D r s k o Parcel Groups S3 Decrease from S4 WSE (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C d l e i f n e e r G e r u t u F : 3 o i r a n e c S T X E N e d o C 4 S h t i w 3 S f o l a i t n e r e f f i D r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S3-13 De Verne St Arp dale St e v A nt u o m ra a P M o ntclaire e v A r o b Ar n n A S t Frazier Ave e h Av dric o o G R a bb Gle n St Burris Cir L a m a r B l v d 0 200 8 8 2 6 1 3 U A 8 1 0 2 9 2 1 / / : t e a D 400 Feet e v d A xfor O L a C a s a D r d a r B lv m a L D ic k s o n D r Storm Drain Level of Service > 100-yr storm < 100-yr storm < 25-yr storm < 10-yr storm < 2-yr storm event Parcel Groups Group C (Commercial/ Multifamily) Group A, B Date Saved: 1/26/2018 3:24 PM Path: H:\STORMWATER\Exhibits\2017-10 CodeNEXT\2018-01-29 draft\S4-1 Level of Service.mxd I v a L n d y R e n Kin D e l c r e s t D r Rd Curto l e D d Dr n uthla o S d n R nto or h T Ravey St The structure and utility locations shown in this drawing are for informational purposes only and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Unless otherwise noted on the drawing, they do not represent an on-the-ground survey and represent only the approximate relative location. K C B i e c v r e S f o l e v e L 1 - 4 S : e m a N l a r t n e C s a x e T ) t e e f ( e n a P l t t e a S 3 8 D A N I M E T S Y S E T A N D R O O C & M U T A D . O N T C E J O R P N F D E T A E R C E T A D Y B D E R A P E R P E M A N E L F I µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C e c i v r e S f o l e v e L n i a r D m r o t S . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-1 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-2 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L D ic k s Flooding Complaints !( !( !( n D r o Parcel Groups Depth of Inundation (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-3 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L D ic Flooding Complaints !( !( s k o n D r !( Parcel Groups Depth of Inundation (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-4 e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( De Verne St !( !( !( !( L a C a s a D r d a r B lv m a L Flooding Complaints !( k D ic s o !( !( n D r Parcel Groups Depth of Inundation (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C n o i t a d n u n I r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-5 De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L D ic Flooding Complaints !( s k o n D r !( !( Parcel Groups S4 Increase from S1 WSE (2-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C 1 S h t i w 4 S f o l a i t n e r e f f i D r a e Y - 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-6 De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L D ic k s Flooding Complaints !( !( n D r o !( Parcel Groups S4 Increase from S1 WSE (10-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C 1 S h t i w 4 S f o l a i t n e r e f f i D r a e Y - 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-7 De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L D ic k Flooding Complaints !( !( n D s o r !( Parcel Groups S4 Increase from S1 WSE (25-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C 1 S h t i w 4 S f o l a i t n e r e f f i D r a e Y - 5 2 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-8 De Verne St !( !( !( !( e v A nt u o m ra a P Arp dale St M o ntclaire St e v A or Arb n n A !( L a C a s a D r d a r B lv m a L D ic o k s Flooding Complaints !( !( !( n D r Parcel Groups S4 Increase from S1 WSE (100-Year) Frazier Ave !( e h Av dric !( !( !( o o G R a b b Glen St Burris Cir e v d A xfor O L a m a r B l v d !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !(!( !( I v a L n !(!( !( !( !( !( !( D e l c r e s t D r !( !( !( d y R e n Kin !( !( d Dr n uthla o S !( !( !( !( Ravey St !( !( !( !( !( !( !( !( d n R nto or h T µ s n o i t i d n o C e r u t u F : 4 o i r a n e c S T X E N e d o C 1 S h t i w 4 S f o l a i t n e r e f f i D r a e Y - 0 0 1 . C N I , S L O H C I N D N A E S E E R F E L C R I C O D A R O M 1 3 4 0 1 9 5 7 8 7 S A X E T , N I T S U A 0 0 1 3 - 7 1 6 - 2 1 5 : E N O H P 1 0 1 3 - 7 1 6 - 2 1 5 : X A F 0 0 3 E T I U S FIGURE S4-9 CodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: SCS Hydrology Input Freese and Nichols, Inc. 12/21/2017 Area ID 26086 33385 69711 77490 77491 77492 77493 77494 77495 77496 77545 77546 77547 77548 77778 77779 77780 77781 77830 77831 77835 77836 77837 77838 77839 77840 77841 77901 77902 77903 77904 77905 77906 77954 77955 78464 78465 81696 84133 88217 92384 265187 406347 409915 410262 Area (ac) 3.04 2.01 2.82 1.34 1.69 0.70 0.35 0.47 1.69 3.40 1.30 3.15 0.18 2.37 1.07 5.49 2.21 9.14 2.34 4.47 1.26 0.20 0.27 0.56 0.46 2.39 2.07 4.31 2.03 1.06 1.08 5.30 0.64 6.66 7.49 4.11 0.51 2.49 0.13 5.86 0.93 0.66 1.49 2.18 2.12 Time of Conc. (min) S2/S3 6.96 6.96 5.00 5.00 6.18 7.78 5.00 5.00 5.00 8.32 5.00 5.26 5.00 5.00 9.16 7.24 10.59 12.44 5.00 6.63 5.00 5.00 5.00 5.00 5.00 9.78 12.45 14.34 9.22 8.46 7.38 6.27 5.00 13.54 13.40 9.39 5.21 6.11 5.00 10.31 8.46 6.15 8.46 9.02 7.44 S1/S4 6.96 6.96 5.00 5.00 6.18 7.78 5.00 5.00 5.00 5.71 5.00 5.26 5.00 5.00 5.00 5.00 10.59 12.25 5.00 6.63 5.00 5.00 5.00 5.00 5.00 5.00 5.00 8.62 5.79 5.00 5.00 6.27 5.00 5.19 8.58 6.14 5.21 6.11 5.00 7.82 5.00 5.00 5.00 6.09 5.00 Δ (%) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 45.6 0.0 0.0 0.0 0.0 83.3 44.9 0.0 1.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 95.5 149.0 66.4 59.1 69.2 47.7 0.0 0.0 160.9 56.1 53.0 0.0 0.0 0.0 31.8 69.2 23.1 69.2 48.0 48.9 Soil CN 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 79.02 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 S1 35.8 12.9 25.4 39.5 46.3 47.2 58.3 65.9 47.7 60.2 42.2 42.0 61.4 30.9 50.0 56.0 28.0 41.0 52.0 45.9 56.0 65.7 65.9 65.9 65.9 53.2 73.8 72.4 51.0 82.5 77.7 56.8 55.5 72.8 53.9 49.4 65.2 25.6 67.1 65.1 68.6 73.0 59.0 1.0 77.3 Impervious Cover (%) S2 5.7 11.6 25.4 39.5 46.3 47.2 58.3 65.9 47.7 38.7 42.2 42.0 61.4 30.9 47.9 19.7 27.7 24.9 51.9 43.2 35.5 65.7 65.9 65.9 65.9 33.0 14.2 15.0 8.8 0.2 16.0 27.1 55.5 21.4 26.3 22.4 64.2 25.6 56.6 24.3 0.8 0.0 0.0 0.6 0.2 S3 33.6 44.1 43.7 49.0 52.5 52.2 58.6 65.9 52.7 41.2 48.4 47.3 61.4 46.5 53.8 31.8 27.9 33.8 55.6 49.5 38.9 65.7 65.9 65.9 65.9 33.0 14.2 20.6 8.8 0.2 16.0 33.7 59.8 23.2 26.3 26.3 64.6 45.2 56.6 24.3 0.8 0.0 0.0 0.6 0.2 Change in Impervious Cover (pp) S1→S2 S1→S3 S1→S4 S3→S4 -30.1 -1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -21.4 0.0 0.0 0.0 0.0 -2.1 -36.2 -0.2 -16.0 -0.1 -2.6 -20.5 0.0 0.0 0.0 0.0 -20.2 -59.6 -57.4 -42.2 -82.3 -61.7 -29.7 0.0 -51.4 -27.6 -27.0 -1.1 0.0 -10.5 -40.8 -67.8 -73.0 -59.0 -0.4 -77.1 -2.2 31.3 18.3 9.5 6.2 5.1 0.3 0.0 5.0 -18.9 6.1 5.3 0.0 15.6 3.8 -24.2 0.0 -7.2 3.6 3.6 -17.1 0.0 0.0 0.0 0.0 -20.2 -59.6 -51.8 -42.2 -82.3 -61.7 -23.1 4.3 -49.6 -27.6 -23.1 -0.6 19.6 -10.5 -40.8 -67.8 -73.0 -59.0 -0.4 -77.1 27.9 32.6 20.1 9.5 6.2 5.1 0.3 0.0 5.0 2.5 6.1 5.3 0.0 15.6 5.9 12.0 0.2 8.9 3.7 6.3 3.4 0.0 0.0 0.0 0.0 0.0 0.0 5.6 0.0 0.0 0.0 6.6 4.3 1.8 0.0 3.9 0.4 19.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 30.1 1.3 1.8 0.0 0.0 0.0 0.0 0.0 0.0 21.4 0.0 0.0 0.0 0.0 2.1 36.2 0.2 16.0 0.1 2.6 20.5 0.0 0.0 0.0 0.0 20.2 59.6 57.4 42.2 82.3 61.7 29.7 0.0 51.4 27.6 27.0 1.1 0.0 10.5 40.8 67.8 73.0 59.0 0.4 77.1 S4 63.7 45.5 45.5 49.0 52.5 52.2 58.6 65.9 52.7 62.7 48.4 47.3 61.4 46.5 55.8 68.0 28.2 49.8 55.7 52.1 59.4 65.7 65.9 65.9 65.9 53.2 73.8 78.0 51.0 82.5 77.7 63.4 59.8 74.6 53.9 53.2 65.7 45.2 67.1 65.1 68.6 73.0 59.0 1.0 77.3 1 of 5 Table 5. SCS Hydrology InputCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 6: SCS Hydrology Output Freese and Nichols, Inc. 12/21/2017 Area ID 26086 33385 69711 77490 77491 77492 77493 77494 77495 77496 77545 77546 77547 77548 77778 77779 77780 77781 77830 77831 77835 77836 77837 77838 77839 77840 77841 77901 77902 77903 77904 77905 77906 77954 77955 78464 78465 81696 84133 88217 92384 265187 406347 409915 410262 Area (ac) 3.04 2.01 2.82 1.34 1.69 0.70 0.35 0.47 1.69 3.40 1.30 3.15 0.18 2.37 1.07 5.49 2.21 9.14 2.34 4.47 1.26 0.20 0.27 0.56 0.46 2.39 2.07 4.31 2.03 1.06 1.08 5.30 0.64 6.66 7.49 4.11 0.51 2.49 0.13 5.86 0.93 0.66 1.49 2.18 2.12 S1 6.3 3.6 5.7 2.9 3.8 1.5 0.8 1.2 3.9 8.3 2.9 7.0 0.5 5.0 2.5 13.2 4.0 17.5 5.5 9.9 3.0 0.5 0.7 1.4 1.2 5.7 5.5 10.6 4.6 2.9 2.9 12.6 1.5 17.5 16.7 9.4 1.3 4.9 0.3 14.1 2.4 1.7 3.6 3.6 5.7 Peak 2-Year Runoff (cfs) Change in Peak 2-Year Runoff (%) S2 5.1 3.5 5.7 2.9 3.8 1.5 0.8 1.2 3.9 7.0 2.9 7.0 0.5 5.0 2.3 10.2 4.0 15.7 5.5 9.7 2.7 0.5 0.7 1.4 1.2 4.6 3.3 6.6 3.2 1.7 2.0 10.5 1.5 10.9 12.7 7.4 1.3 4.9 0.3 10.5 1.5 1.1 2.3 3.4 3.4 S3 6.2 4.4 6.4 3.1 3.9 1.6 0.8 1.2 4.0 7.1 3.0 7.2 0.5 5.4 2.4 11.0 4.0 16.7 5.6 10.1 2.8 0.5 0.7 1.4 1.2 4.6 3.3 6.9 3.2 1.7 2.0 11.0 1.6 11.1 12.7 7.6 1.3 5.5 0.3 10.5 1.5 1.1 2.3 3.4 3.4 S4 7.4 4.4 6.4 3.1 3.9 1.6 0.8 1.2 4.0 8.4 3.0 7.2 0.5 5.4 2.6 14.1 4.0 18.5 5.6 10.2 3.1 0.5 0.7 1.4 1.2 5.7 5.5 10.9 4.6 2.9 2.9 13.0 1.6 17.6 16.7 9.6 1.3 5.5 0.3 14.1 2.4 1.7 3.6 3.6 5.7 S1→S2 -19 -1 0 0 0 0 0 0 0 -16 0 0 0 0 -9 -23 0 -10 0 -2 -11 0 0 0 0 -19 -40 -38 -31 -43 -33 -16 0 -38 -24 -21 -1 0 -5 -26 -39 -37 -36 -7 -40 S1→S3 -1 22 12 6 4 3 0 0 3 -15 4 3 0 10 -5 -17 0 -5 2 2 -9 0 0 0 0 -19 -40 -35 -31 -43 -33 -13 2 -37 -24 -19 0 13 -5 -26 -39 -37 -36 -7 -40 S1→S4 17 23 13 6 4 3 0 0 3 1 4 3 0 10 3 6 0 6 2 4 2 0 0 0 0 0 0 3 0 0 0 4 2 1 0 2 0 13 0 0 0 0 0 0 0 S4→S3 -16 -1 -1 0 0 0 0 0 0 -16 0 0 0 0 -8 -22 0 -10 0 -1 -11 0 0 0 0 -19 -40 -37 -31 -43 -33 -16 0 -37 -24 -21 -1 0 -5 -26 -39 -37 -36 -7 -40 2 of 5 Table 6. SCS Hydrology OutputCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 6: SCS Hydrology Output Freese and Nichols, Inc. 12/21/2017 Area ID 26086 33385 69711 77490 77491 77492 77493 77494 77495 77496 77545 77546 77547 77548 77778 77779 77780 77781 77830 77831 77835 77836 77837 77838 77839 77840 77841 77901 77902 77903 77904 77905 77906 77954 77955 78464 78465 81696 84133 88217 92384 265187 406347 409915 410262 Area (ac) 3.04 2.01 2.82 1.34 1.69 0.70 0.35 0.47 1.69 3.40 1.30 3.15 0.18 2.37 1.07 5.49 2.21 9.14 2.34 4.47 1.26 0.20 0.27 0.56 0.46 2.39 2.07 4.31 2.03 1.06 1.08 5.30 0.64 6.66 7.49 4.11 0.51 2.49 0.13 5.86 0.93 0.66 1.49 2.18 2.12 S1 13.2 8.2 12.3 6.1 7.7 3.1 1.7 2.3 7.8 16.2 5.9 14.4 0.9 10.5 5.0 26.0 8.7 36.2 11.0 20.1 6.0 1.0 1.3 2.7 2.2 11.2 10.3 20.0 9.3 5.4 5.4 24.7 3.0 32.9 33.2 18.8 2.5 10.7 0.6 27.2 4.5 3.2 7.1 8.7 10.6 Peak 10-Year Runoff (cfs) Change in Peak 10-Year Runoff (%) S2 12.1 8.1 12.3 6.1 7.7 3.1 1.7 2.3 7.8 14.5 5.9 14.4 0.9 10.5 4.6 22.7 8.7 34.4 11.0 19.9 5.7 1.0 1.3 2.7 2.2 9.7 7.5 15.1 7.6 4.0 4.4 22.7 3.0 24.2 27.7 16.4 2.5 10.7 0.6 23.0 3.5 2.6 5.6 8.2 8.2 S3 13.1 8.9 13.0 6.2 7.8 3.1 1.7 2.3 7.9 14.6 6.0 14.6 0.9 11.0 4.7 23.5 8.7 35.3 11.1 20.3 5.7 1.0 1.3 2.7 2.2 9.7 7.5 15.4 7.6 4.0 4.4 23.2 3.1 24.4 27.7 16.6 2.5 11.3 0.6 23.0 3.5 2.6 5.6 8.2 8.2 S4 14.2 9.0 13.0 6.2 7.8 3.1 1.7 2.3 7.9 16.3 6.0 14.6 0.9 11.0 5.0 26.8 8.7 37.1 11.1 20.4 6.0 1.0 1.3 2.7 2.2 11.2 10.3 20.3 9.3 5.4 5.4 25.2 3.1 33.0 33.2 19.0 2.5 11.3 0.6 27.2 4.5 3.2 7.1 8.7 10.6 S1→S2 -8 0 0 0 0 0 0 0 0 -10 0 0 0 0 -8 -13 0 -5 0 -1 -5 0 0 0 0 -13 -27 -25 -18 -25 -19 -8 0 -26 -16 -13 0 0 -3 -15 -22 -20 -21 -6 -23 S1→S3 -1 9 5 3 2 1 0 0 1 -10 2 1 0 4 -6 -10 0 -2 1 1 -4 0 0 0 0 -13 -27 -23 -18 -25 -19 -6 1 -26 -16 -12 0 6 -3 -15 -22 -20 -21 -6 -23 S1→S4 8 10 6 3 2 1 0 0 1 1 2 1 0 4 2 3 0 3 1 2 1 0 0 0 0 0 0 1 0 0 0 2 1 0 0 1 0 6 0 0 0 0 0 0 0 S4→S3 -8 0 0 0 0 0 0 0 0 -10 0 0 0 0 -8 -12 0 -5 0 -1 -5 0 0 0 0 -13 -27 -24 -18 -25 -19 -8 0 -26 -16 -13 0 0 -3 -15 -22 -20 -21 -6 -23 3 of 5 Table 6. SCS Hydrology OutputCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 6: SCS Hydrology Output Freese and Nichols, Inc. 12/21/2017 Area ID 26086 33385 69711 77490 77491 77492 77493 77494 77495 77496 77545 77546 77547 77548 77778 77779 77780 77781 77830 77831 77835 77836 77837 77838 77839 77840 77841 77901 77902 77903 77904 77905 77906 77954 77955 78464 78465 81696 84133 88217 92384 265187 406347 409915 410262 Area (ac) 3.04 2.01 2.82 1.34 1.69 0.70 0.35 0.47 1.69 3.40 1.30 3.15 0.18 2.37 1.07 5.49 2.21 9.14 2.34 4.47 1.26 0.20 0.27 0.56 0.46 2.39 2.07 4.31 2.03 1.06 1.08 5.30 0.64 6.66 7.49 4.11 0.51 2.49 0.13 5.86 0.93 0.66 1.49 2.18 2.12 S1 17.3 10.9 16.2 7.9 10.0 4.0 2.1 2.9 10.2 20.8 7.7 18.7 1.1 13.8 6.4 33.5 11.5 47.3 14.2 26.1 7.7 1.3 1.7 3.5 2.8 14.5 13.1 25.6 12.1 6.8 6.9 31.8 3.9 41.9 42.9 24.4 3.2 14.1 0.8 34.8 5.8 4.1 9.2 11.7 13.4 Peak 25-Year Runoff (cfs) Change in Peak 25-Year Runoff (%) S2 16.2 10.8 16.2 7.9 10.0 4.0 2.1 2.9 10.2 19.0 7.7 18.7 1.1 13.8 6.0 30.1 11.5 45.5 14.2 25.9 7.4 1.3 1.7 3.5 2.8 12.8 10.1 20.2 10.3 5.4 5.9 30.0 3.9 32.2 36.7 21.7 3.2 14.1 0.8 30.4 4.7 3.5 7.6 11.0 11.1 S3 17.2 11.6 16.8 8.1 10.1 4.0 2.1 2.9 10.3 19.1 7.8 18.9 1.1 14.2 6.0 30.8 11.5 46.4 14.3 26.3 7.4 1.3 1.7 3.5 2.8 12.8 10.1 20.4 10.3 5.4 5.9 30.4 3.9 32.3 36.7 21.9 3.2 14.6 0.8 30.4 4.7 3.5 7.6 11.0 11.1 S4 18.3 11.6 16.9 8.1 10.1 4.0 2.1 2.9 10.3 20.9 7.8 18.9 1.1 14.2 6.5 34.3 11.5 48.1 14.3 26.4 7.7 1.3 1.7 3.5 2.8 14.5 13.1 25.8 12.1 6.8 6.9 32.3 3.9 42.0 42.9 24.6 3.2 14.6 0.8 34.8 5.8 4.1 9.2 11.7 13.4 S1→S2 -6 0 0 0 0 0 0 0 0 -9 0 0 0 0 -7 -10 0 -4 0 -1 -4 0 0 0 0 -12 -23 -21 -15 -20 -15 -6 0 -23 -15 -11 0 0 -2 -13 -18 -15 -17 -6 -18 S1→S3 0 7 4 2 1 1 0 0 1 -8 1 1 0 3 -6 -8 0 -2 1 1 -3 0 0 0 0 -12 -23 -20 -15 -20 -15 -5 1 -23 -15 -10 0 4 -2 -13 -18 -15 -17 -6 -18 S1→S4 6 7 4 2 1 1 0 0 1 0 1 1 0 3 1 2 0 2 1 1 1 0 0 0 0 0 0 1 0 0 0 1 1 0 0 1 0 4 0 0 0 0 0 0 0 S4→S3 -6 0 0 0 0 0 0 0 0 -9 0 0 0 0 -7 -10 0 -4 0 -1 -4 0 0 0 0 -12 -23 -21 -15 -20 -15 -6 0 -23 -15 -11 0 0 -2 -13 -18 -15 -17 -6 -18 4 of 5 Table 6. SCS Hydrology OutputCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 6: SCS Hydrology Output Freese and Nichols, Inc. 12/21/2017 Area ID 26086 33385 69711 77490 77491 77492 77493 77494 77495 77496 77545 77546 77547 77548 77778 77779 77780 77781 77830 77831 77835 77836 77837 77838 77839 77840 77841 77901 77902 77903 77904 77905 77906 77954 77955 78464 78465 81696 84133 88217 92384 265187 406347 409915 410262 Area (ac) 3.04 2.01 2.82 1.34 1.69 0.70 0.35 0.47 1.69 3.40 1.30 3.15 0.18 2.37 1.07 5.49 2.21 9.14 2.34 4.47 1.26 0.20 0.27 0.56 0.46 2.39 2.07 4.31 2.03 1.06 1.08 5.30 0.64 6.66 7.49 4.11 0.51 2.49 0.13 5.86 0.93 0.66 1.49 2.18 2.12 S1 24.1 15.4 22.8 11.0 13.8 5.5 2.9 4.0 14.0 28.4 10.7 25.9 1.6 19.3 8.9 46.0 16.1 65.6 19.5 36.1 10.6 1.7 2.3 4.8 3.9 19.9 17.7 34.7 16.7 9.1 9.3 43.7 5.4 56.9 59.0 33.7 4.3 19.7 1.1 47.5 7.9 5.6 12.5 16.7 18.2 Peak 100-Year Runoff (cfs) S2 23.1 15.4 22.8 11.0 13.8 5.5 2.9 4.0 14.0 26.4 10.7 25.9 1.6 19.3 8.2 42.4 16.1 64.0 19.5 35.9 10.3 1.7 2.3 4.8 3.9 17.9 14.3 28.6 14.7 7.7 8.3 42.0 5.4 45.4 51.5 30.5 4.3 19.7 1.1 42.8 6.8 5.0 10.9 15.8 15.9 S3 24.0 16.0 23.3 11.2 13.9 5.6 2.9 4.0 14.1 26.5 10.7 26.1 1.6 19.6 8.3 43.0 16.1 64.8 19.6 36.2 10.3 1.7 2.3 4.8 3.9 17.9 14.3 28.9 14.7 7.7 8.3 42.4 5.4 45.5 51.5 30.7 4.3 20.3 1.1 42.8 6.8 5.0 10.9 15.8 15.9 Change in Peak 100-Year Runoff (%) S1→S2 S4→S3 -4 -4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -7 -7 0 0 0 0 0 0 0 0 -7 -7 -8 -8 0 0 -2 -3 0 0 0 0 -3 -3 0 0 0 0 0 0 0 0 -10 -10 -19 -19 -17 -18 -12 -12 -15 -15 -11 -11 -4 -4 0 0 -20 -20 -13 -13 -9 -9 0 0 0 0 -1 -1 -10 -10 -14 -14 -10 -10 -13 -13 -6 -6 -13 -13 S1→S4 4 4 3 1 1 1 0 0 1 0 1 1 0 2 1 1 0 1 0 1 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 3 0 0 0 0 0 0 0 S1→S3 0 4 2 1 1 1 0 0 1 -7 1 1 0 2 -6 -6 0 -1 0 0 -2 0 0 0 0 -10 -19 -17 -12 -15 -11 -3 1 -20 -13 -9 0 3 -1 -10 -14 -10 -13 -6 -13 S4 25.0 16.1 23.3 11.2 13.9 5.6 2.9 4.0 14.1 28.5 10.7 26.1 1.6 19.6 8.9 46.6 16.1 66.4 19.6 36.4 10.6 1.7 2.3 4.8 3.9 19.9 17.7 35.0 16.7 9.1 9.3 44.1 5.4 57.0 59.0 33.8 4.3 20.3 1.1 47.5 7.9 5.6 12.5 16.7 18.2 5 of 5 Table 6. SCS Hydrology OutputCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 235 237 239 241 244 245 246 247 250 251 252 253 254 255 256 262 265 273 274 275 277 278 284 291 292 295 297 298 302 303 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 573994 2307 KINNEY RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 728125 2211 THORNTON RD 78704 728126 2209 THORNTON RD 78704 303010 2304 THORNTON RD 78704 302992 2311 KINNEY RD 78704 573994 2307 KINNEY RD 78704 728127 2207 THORNTON RD 78704 728127 2207 THORNTON RD 78704 303009 2300 THORNTON RD 78704 573994 2307 KINNEY RD 78704 864738 2205 THORNTON RD 78704 303009 2300 THORNTON RD 78704 303194 2202 DELCREST DR 78704 302993 2303 KINNEY RD 78704 303193 2200 DELCREST DR 78704 573993 2309 KINNEY RD 78704 303009 2300 THORNTON RD 78704 303193 2200 DELCREST DR 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303192 2301 DEL CURTO RD 78704 303189 2203 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 Bldg Area, sf 3,646 3,183 579 1,195 81 3,273 169 828 2,989 160 3,155 518 907 2,090 1,971 1,844 1,166 587 1,669 83 3,005 2,385 1,102 654 190 53 2,568 1,982 227 191 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (2y) -0.02 -0.08 -0.06 -0.10 -0.05 -0.12 -0.11 -0.05 -0.05 -0.12 -0.06 -0.06 -0.05 -0.05 -0.13 -0.07 -0.04 -0.13 -0.01 - -0.08 -0.06 -0.26 -0.01 -0.04 -0.04 -0.06 - - -0.03 S3 -0.31 -0.02 -0.17 0.81 1.14 1.00 0.87 -0.02 -0.02 0.19 0.08 0.61 -0.03 -0.03 1.11 0.80 -0.16 0.19 -0.47 - -0.32 0.10 -1.10 - - - - - - - S4 -0.28 0.07 -0.10 0.92 1.20 1.14 1.00 0.04 0.04 0.32 2.37 0.68 0.02 0.03 1.26 0.88 -0.12 0.35 -0.45 -0.89 -0.23 0.17 -0.23 -0.49 -0.46 -0.46 -0.44 - - -0.47 S1 -0.29 0.06 -0.11 0.91 1.19 1.12 0.98 0.03 0.03 0.31 0.14 0.67 0.02 0.02 1.24 0.87 -0.12 0.32 -0.46 -0.89 -0.24 0.16 -0.24 -0.49 -0.46 -0.46 -0.44 - - -0.47 S2 -0.32 -0.04 -0.18 0.79 1.13 0.97 0.85 -0.04 -0.04 0.16 0.06 0.60 -0.04 -0.04 1.08 0.79 -0.16 0.16 -0.49 - -0.43 0.09 -1.11 - - - - - - - S1→S2 S1→S3 S1→S4 S4→S3 -0.03 -0.03 -0.09 -0.10 -0.07 -0.07 -0.11 -0.12 -0.06 -0.06 -0.14 -0.15 -0.13 -0.13 -0.06 -0.07 -0.06 -0.07 -0.13 -0.15 -2.29 -0.08 -0.07 -0.07 -0.05 -0.06 -0.06 -0.06 -0.15 -0.16 -0.08 -0.08 -0.04 -0.04 -0.16 -0.16 -0.02 -0.03 - - -0.09 -0.19 -0.07 -0.07 -0.27 -0.26 -0.01 -0.01 -0.04 -0.04 -0.04 -0.04 -0.06 -0.06 - - - - -0.03 -0.03 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.01 0.01 0.01 2.23 0.01 0.00 0.01 0.02 0.01 0.00 0.03 0.01 0.00 0.01 0.01 0.01 0.00 0.00 0.00 0.00 - - 0.00 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 1 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 307 310 312 313 316 317 318 319 322 326 331 346 445 455 457 461 466 478 483 486 487 488 490 495 497 511 512 527 528 537 547 303192 2301 DEL CURTO RD 78704 303184 2215 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 303185 2213 IVA LN 78704 303130 2300 DEL CURTO RD 78704 303186 2211 IVA LN 78704 707241 2501 S LAMAR BLVD 78704 303187 2209 IVA LN 78704 302993 2303 KINNEY RD 78704 696223 2216 THORNTON RD 78704 303129 2212 DEL CURTO RD 78704 303137 2208 DEL CURTO RD 78704 302996 2201 KINNEY RD 78704 303153 2310 S LAMAR BLVD 78704 303158 2330 S LAMAR BLVD 78704 303155 2320 S LAMAR BLVD 78704 303229 2238 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303234 2200 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303140 2305 BLUEBONNET LN 78704 303156 2324 S LAMAR BLVD 78704 303152 2300 S LAMAR BLVD 78704 303231 2129 GOODRICH AVE 78704 303232 2228 S LAMAR BLVD 78704 863462 2301 BLUEBONNET LN 78704 303233 2127 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 303228 2125 GOODRICH AVE 78704 303228 2125 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 Bldg Area, sf 471 1,128 2,835 1,713 1,304 1,653 19,363 1,505 1,580 3,199 1,364 9,083 16,821 4,532 13,119 2,867 1,908 610 2,693 2,519 2,752 7,533 16,038 1,973 2,062 4,084 5,063 3,594 3,258 7,283 1,581 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (2y) S1→S2 S1→S3 S1→S4 S4→S3 S3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - S2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - S4 - - -0.47 - -0.45 - -0.21 - - - - -0.53 - - -0.35 -0.49 - - - - - -0.47 - - - - - - - - - S1 - - -0.47 - -0.45 - -0.23 - - - - -0.53 - - -0.47 - - - - - - - - - - - - - - - - - - -0.03 - -0.05 - -0.27 - - - - -0.03 - - -0.03 - - - - - - - - - - - - - - - - - - -0.03 - -0.05 - -0.27 - - - - -0.03 - - -0.03 - - - - - - - - - - - - - - - - - - -0.03 - -0.05 - -0.29 - - - - -0.03 - - -0.15 -0.01 - - - - - -0.03 - - - - - - - - - - - 0.00 - 0.00 - 0.02 - - - - 0.00 - - 0.12 0.01 - - - - - 0.03 - - - - - - - - - 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 2 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 235 237 239 241 244 245 246 247 250 251 252 253 254 255 256 262 265 273 274 275 277 278 284 291 292 295 297 298 302 303 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 573994 2307 KINNEY RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 728125 2211 THORNTON RD 78704 728126 2209 THORNTON RD 78704 303010 2304 THORNTON RD 78704 302992 2311 KINNEY RD 78704 573994 2307 KINNEY RD 78704 728127 2207 THORNTON RD 78704 728127 2207 THORNTON RD 78704 303009 2300 THORNTON RD 78704 573994 2307 KINNEY RD 78704 864738 2205 THORNTON RD 78704 303009 2300 THORNTON RD 78704 303194 2202 DELCREST DR 78704 302993 2303 KINNEY RD 78704 303193 2200 DELCREST DR 78704 573993 2309 KINNEY RD 78704 303009 2300 THORNTON RD 78704 303193 2200 DELCREST DR 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303192 2301 DEL CURTO RD 78704 303189 2203 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 Bldg Area, sf 3,646 3,183 579 1,195 81 3,273 169 828 2,989 160 3,155 518 907 2,090 1,971 1,844 1,166 587 1,669 83 3,005 2,385 1,102 654 190 53 2,568 1,982 227 191 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (10y) -0.04 -0.06 -0.05 -0.07 -0.04 -0.07 -0.06 -0.03 -0.04 -0.07 -0.01 -0.04 -0.04 -0.04 -0.07 -0.08 -0.02 -0.07 -0.01 -0.04 -0.11 -0.08 -0.03 -0.16 -0.20 -0.20 -0.22 -0.13 -0.10 -0.08 S3 -0.11 0.31 0.07 1.19 1.37 1.45 1.28 0.20 0.21 0.63 2.42 0.87 0.21 0.21 1.58 1.18 -0.03 0.69 -0.22 -0.39 -0.06 0.43 -0.11 0.10 -0.14 -0.14 -0.04 -0.13 -0.42 -0.32 S4 -0.06 0.39 0.12 1.27 1.42 1.53 1.35 0.24 0.26 0.71 2.43 0.92 0.26 0.26 1.66 1.27 0.00 0.77 -0.20 -0.35 0.06 0.52 -0.08 0.28 0.07 0.07 0.20 0.00 -0.32 -0.24 S1 -0.07 0.37 0.12 1.26 1.41 1.52 1.34 0.23 0.25 0.70 2.43 0.91 0.25 0.25 1.65 1.26 -0.01 0.76 -0.21 -0.35 0.05 0.51 -0.08 0.26 0.06 0.06 0.18 0.00 -0.32 -0.24 S2 -0.13 0.30 0.07 1.18 1.36 1.44 1.26 0.19 0.20 0.62 2.42 0.86 0.20 0.20 1.56 1.17 -0.03 0.67 -0.23 -0.39 -0.07 0.41 -0.12 0.08 -0.15 -0.15 -0.05 -0.14 -0.43 -0.32 S1→S2 S1→S3 S1→S4 S4→S3 -0.05 -0.06 -0.08 -0.07 -0.05 -0.05 -0.08 -0.08 -0.05 -0.05 -0.08 -0.08 -0.07 -0.08 -0.04 -0.04 -0.05 -0.05 -0.08 -0.08 -0.01 -0.01 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.08 -0.09 -0.09 -0.09 -0.03 -0.02 -0.08 -0.09 -0.02 -0.02 -0.04 -0.04 -0.12 -0.12 -0.09 -0.10 -0.03 -0.04 -0.18 -0.18 -0.21 -0.21 -0.21 -0.21 -0.24 -0.23 -0.13 -0.14 -0.10 -0.11 -0.08 -0.08 0.01 0.02 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01 0.00 0.02 0.01 0.01 0.02 0.00 0.00 0.00 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 3 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 307 310 312 313 316 317 318 319 322 326 331 346 445 455 457 461 466 478 483 486 487 488 490 495 497 511 512 527 528 537 547 303192 2301 DEL CURTO RD 78704 303184 2215 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 303185 2213 IVA LN 78704 303130 2300 DEL CURTO RD 78704 303186 2211 IVA LN 78704 707241 2501 S LAMAR BLVD 78704 303187 2209 IVA LN 78704 302993 2303 KINNEY RD 78704 696223 2216 THORNTON RD 78704 303129 2212 DEL CURTO RD 78704 303137 2208 DEL CURTO RD 78704 302996 2201 KINNEY RD 78704 303153 2310 S LAMAR BLVD 78704 303158 2330 S LAMAR BLVD 78704 303155 2320 S LAMAR BLVD 78704 303229 2238 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303234 2200 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303140 2305 BLUEBONNET LN 78704 303156 2324 S LAMAR BLVD 78704 303152 2300 S LAMAR BLVD 78704 303231 2129 GOODRICH AVE 78704 303232 2228 S LAMAR BLVD 78704 863462 2301 BLUEBONNET LN 78704 303233 2127 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 303228 2125 GOODRICH AVE 78704 303228 2125 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 Bldg Area, sf 471 1,128 2,835 1,713 1,304 1,653 19,363 1,505 1,580 3,199 1,364 9,083 16,821 4,532 13,119 2,867 1,908 610 2,693 2,519 2,752 7,533 16,038 1,973 2,062 4,084 5,063 3,594 3,258 7,283 1,581 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (10y) -0.12 -0.08 -0.08 -0.09 -0.22 -0.10 -1.38 -0.10 -0.10 -0.24 -0.02 -0.15 -0.04 0.00 0.00 0.00 -0.01 -0.03 -0.05 -0.03 0.00 0.00 0.00 -0.01 -0.03 0.00 -0.02 -0.07 -0.09 -0.01 -0.04 S3 -0.15 -0.29 -0.32 -0.30 -0.04 -0.26 1.43 -0.26 -0.44 -0.49 - -0.22 -0.22 -0.28 0.95 -0.20 -0.14 -0.24 -0.05 -0.12 0.08 0.27 -0.06 -0.44 -0.27 0.13 -0.26 0.10 -0.27 -0.46 -0.17 S4 -0.02 -0.20 -0.23 -0.21 0.20 -0.15 2.82 -0.15 -0.33 -0.18 -0.48 -0.06 -0.17 -0.27 0.95 -0.20 -0.12 -0.21 0.00 -0.08 0.10 0.28 -0.06 -0.43 -0.23 0.15 -0.22 0.19 -0.16 -0.44 -0.12 S2 -0.16 -0.30 -0.32 -0.30 -0.05 -0.27 1.42 -0.27 -0.44 - - -0.23 -0.25 -0.29 0.95 -0.21 -0.14 -0.25 -0.06 -0.13 0.07 0.25 -0.07 -0.44 -0.28 0.12 -0.26 0.08 -0.29 -0.46 -0.19 S1 -0.03 -0.21 -0.24 -0.21 0.18 -0.16 2.81 -0.16 -0.34 -0.25 -0.48 -0.07 -0.18 -0.28 0.95 -0.20 -0.13 -0.21 0.00 -0.09 0.08 0.27 -0.06 -0.43 -0.24 0.13 -0.24 0.17 -0.18 -0.45 -0.13 S1→S2 S1→S3 S1→S4 S4→S3 -0.13 -0.13 -0.09 -0.09 -0.09 -0.08 -0.09 -0.09 -0.24 -0.23 -0.11 -0.11 -1.39 -1.39 -0.11 -0.11 -0.11 -0.10 -0.31 -0.25 -0.02 -0.02 -0.16 -0.16 -0.05 -0.07 -0.01 -0.01 0.00 0.00 0.00 -0.01 -0.02 -0.01 -0.03 -0.04 -0.05 -0.06 -0.04 -0.04 -0.02 -0.01 -0.01 -0.02 0.00 -0.01 -0.01 -0.01 -0.04 -0.04 -0.02 -0.01 -0.04 -0.02 -0.09 -0.09 -0.11 -0.11 -0.02 -0.01 -0.05 -0.06 0.01 0.01 0.01 0.00 0.02 0.01 0.01 0.01 0.01 0.07 0.00 0.01 0.01 0.01 0.00 0.00 0.01 0.00 0.00 0.01 0.02 0.01 0.00 0.00 0.01 0.02 0.02 0.02 0.02 0.01 0.01 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 4 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 235 237 239 241 244 245 246 247 250 251 252 253 254 255 256 262 265 273 274 275 277 278 284 291 292 295 297 298 302 303 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 573994 2307 KINNEY RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 728125 2211 THORNTON RD 78704 728126 2209 THORNTON RD 78704 303010 2304 THORNTON RD 78704 302992 2311 KINNEY RD 78704 573994 2307 KINNEY RD 78704 728127 2207 THORNTON RD 78704 728127 2207 THORNTON RD 78704 303009 2300 THORNTON RD 78704 573994 2307 KINNEY RD 78704 864738 2205 THORNTON RD 78704 303009 2300 THORNTON RD 78704 303194 2202 DELCREST DR 78704 302993 2303 KINNEY RD 78704 303193 2200 DELCREST DR 78704 573993 2309 KINNEY RD 78704 303009 2300 THORNTON RD 78704 303193 2200 DELCREST DR 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303192 2301 DEL CURTO RD 78704 303189 2203 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 Bldg Area, sf 3,646 3,183 579 1,195 81 3,273 169 828 2,989 160 3,155 518 907 2,090 1,971 1,844 1,166 587 1,669 83 3,005 2,385 1,102 654 190 53 2,568 1,982 227 191 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (25y) -0.06 -0.11 -0.05 -0.08 -0.05 -0.08 -0.08 -0.04 -0.05 -0.08 -0.01 -0.07 -0.05 -0.05 -0.09 -0.09 -0.03 -0.06 -0.02 -0.05 -0.13 -0.11 -0.05 -0.18 -0.38 -0.39 -0.37 -0.15 -0.11 -0.16 S4 0.09 0.62 0.27 1.50 1.56 1.75 1.58 0.37 0.44 0.93 2.46 1.10 0.44 0.44 1.91 1.52 0.09 0.99 -0.11 -0.21 0.33 0.82 0.06 0.65 0.56 0.57 0.66 0.32 -0.10 -0.04 S3 0.03 0.50 0.20 1.41 1.50 1.66 1.49 0.32 0.38 0.84 2.45 1.02 0.38 0.38 1.81 1.42 0.05 0.92 -0.13 -0.27 0.19 0.70 0.00 0.46 0.18 0.18 0.29 0.16 -0.22 -0.20 S1 0.09 0.61 0.25 1.49 1.55 1.74 1.57 0.36 0.43 0.92 2.46 1.09 0.43 0.43 1.90 1.51 0.08 0.98 -0.11 -0.22 0.32 0.81 0.05 0.64 0.56 0.57 0.66 0.31 -0.11 -0.04 S2 0.02 0.49 0.19 1.39 1.49 1.65 1.48 0.31 0.37 0.83 2.45 1.01 0.37 0.37 1.80 1.40 0.05 0.91 -0.14 -0.27 0.18 0.68 -0.01 0.45 0.17 0.17 0.29 0.15 -0.22 -0.21 S1→S2 S1→S3 S1→S4 S4→S3 -0.06 -0.07 -0.12 -0.12 -0.07 -0.06 -0.09 -0.10 -0.06 -0.06 -0.09 -0.09 -0.09 -0.09 -0.05 -0.05 -0.06 -0.06 -0.09 -0.09 -0.01 -0.01 -0.08 -0.08 -0.06 -0.06 -0.06 -0.06 -0.10 -0.10 -0.10 -0.11 -0.04 -0.03 -0.07 -0.07 -0.02 -0.03 -0.06 -0.05 -0.14 -0.14 -0.12 -0.13 -0.06 -0.06 -0.19 -0.19 -0.38 -0.39 -0.39 -0.40 -0.37 -0.37 -0.16 -0.16 -0.12 -0.11 -0.16 -0.17 0.00 0.01 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01 0.01 0.01 0.01 0.00 0.00 0.00 0.01 0.01 0.00 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 5 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 307 310 312 313 316 317 318 319 322 326 331 346 445 455 457 461 466 478 483 486 487 488 490 495 497 511 512 527 528 537 547 303192 2301 DEL CURTO RD 78704 303184 2215 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 303185 2213 IVA LN 78704 303130 2300 DEL CURTO RD 78704 303186 2211 IVA LN 78704 707241 2501 S LAMAR BLVD 78704 303187 2209 IVA LN 78704 302993 2303 KINNEY RD 78704 696223 2216 THORNTON RD 78704 303129 2212 DEL CURTO RD 78704 303137 2208 DEL CURTO RD 78704 302996 2201 KINNEY RD 78704 303153 2310 S LAMAR BLVD 78704 303158 2330 S LAMAR BLVD 78704 303155 2320 S LAMAR BLVD 78704 303229 2238 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303234 2200 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303140 2305 BLUEBONNET LN 78704 303156 2324 S LAMAR BLVD 78704 303152 2300 S LAMAR BLVD 78704 303231 2129 GOODRICH AVE 78704 303232 2228 S LAMAR BLVD 78704 863462 2301 BLUEBONNET LN 78704 303233 2127 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 303228 2125 GOODRICH AVE 78704 303228 2125 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 Bldg Area, sf 471 1,128 2,835 1,713 1,304 1,653 19,363 1,505 1,580 3,199 1,364 9,083 16,821 4,532 13,119 2,867 1,908 610 2,693 2,519 2,752 7,533 16,038 1,973 2,062 4,084 5,063 3,594 3,258 7,283 1,581 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (25y) -0.15 -0.12 -0.19 -0.12 -0.37 -0.16 -0.13 -0.16 -0.26 0.00 -0.17 -0.06 0.00 0.00 0.00 -0.01 0.01 0.01 -0.01 0.01 -0.01 -0.01 0.00 0.01 0.01 -0.01 -0.01 0.01 -0.01 0.01 0.01 S4 0.28 -0.01 0.00 -0.01 0.66 0.13 3.48 0.13 0.16 0.15 -0.30 0.08 -0.05 -0.12 0.98 -0.07 -0.01 -0.04 0.16 0.16 0.30 0.57 0.05 -0.29 -0.04 0.33 0.00 0.69 0.06 -0.34 0.29 S3 0.12 -0.13 -0.19 -0.13 0.29 -0.03 3.35 -0.03 -0.12 0.14 -0.47 0.02 -0.06 -0.12 0.98 -0.09 -0.01 -0.04 0.14 0.16 0.28 0.54 0.05 -0.29 -0.04 0.31 -0.01 0.68 0.05 -0.34 0.28 S1 0.27 -0.01 0.00 -0.01 0.66 0.13 3.48 0.13 0.14 0.14 -0.30 0.08 -0.06 -0.12 0.98 -0.08 -0.02 -0.05 0.15 0.15 0.29 0.55 0.05 -0.30 -0.05 0.32 0.00 0.67 0.06 -0.35 0.27 S2 0.11 -0.13 -0.19 -0.14 0.29 -0.03 3.35 -0.03 -0.13 0.13 -0.47 0.01 -0.07 -0.13 0.98 -0.09 -0.02 -0.05 0.14 0.15 0.28 0.53 0.04 -0.30 -0.05 0.31 -0.02 0.66 0.04 -0.35 0.27 S1→S2 S1→S3 S1→S4 S4→S3 -0.16 -0.16 -0.12 -0.12 -0.19 -0.19 -0.12 -0.13 -0.37 -0.37 -0.16 -0.16 -0.13 -0.13 -0.16 -0.16 -0.28 -0.27 -0.01 -0.01 -0.17 -0.17 -0.06 -0.07 -0.01 -0.01 0.00 -0.01 0.00 0.00 -0.02 -0.01 0.00 0.00 0.00 0.00 -0.02 -0.01 0.00 0.00 -0.02 -0.01 -0.03 -0.02 0.00 -0.01 0.00 0.00 0.00 0.00 -0.02 -0.01 -0.01 -0.02 -0.01 -0.01 -0.01 -0.02 0.00 0.00 -0.01 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.01 0.00 0.00 0.01 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.00 0.01 0.01 0.01 0.00 0.02 0.00 0.01 0.02 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 6 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 235 237 239 241 244 245 246 247 250 251 252 253 254 255 256 262 265 273 274 275 277 278 284 291 292 295 297 298 302 303 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 573994 2307 KINNEY RD 78704 761196 2308 THORNTON RD 78704 303010 2304 THORNTON RD 78704 728125 2211 THORNTON RD 78704 728126 2209 THORNTON RD 78704 303010 2304 THORNTON RD 78704 302992 2311 KINNEY RD 78704 573994 2307 KINNEY RD 78704 728127 2207 THORNTON RD 78704 728127 2207 THORNTON RD 78704 303009 2300 THORNTON RD 78704 573994 2307 KINNEY RD 78704 864738 2205 THORNTON RD 78704 303009 2300 THORNTON RD 78704 303194 2202 DELCREST DR 78704 302993 2303 KINNEY RD 78704 303193 2200 DELCREST DR 78704 573993 2309 KINNEY RD 78704 303009 2300 THORNTON RD 78704 303193 2200 DELCREST DR 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303131 2302 DEL CURTO RD 78704 303192 2301 DEL CURTO RD 78704 303189 2203 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 Bldg Area, sf 3,646 3,183 579 1,195 81 3,273 169 828 2,989 160 3,155 518 907 2,090 1,971 1,844 1,166 587 1,669 83 3,005 2,385 1,102 654 190 53 2,568 1,982 227 191 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (100y) S4 0.44 1.01 0.52 1.90 1.83 2.10 1.96 0.61 0.64 1.28 2.52 1.40 0.64 0.64 2.32 1.91 0.23 1.34 0.02 0.06 0.63 1.27 0.28 1.02 0.91 0.95 1.00 0.60 0.15 0.18 S1 0.43 1.00 0.51 1.89 1.82 2.10 1.95 0.61 0.64 1.27 2.51 1.39 0.64 0.64 2.31 1.90 0.23 1.33 0.02 0.06 0.62 1.26 0.28 1.01 0.91 0.95 1.00 0.60 0.15 0.18 -0.12 -0.12 -0.08 -0.14 -0.11 -0.13 -0.13 -0.08 -0.07 -0.13 -0.01 -0.12 -0.07 -0.07 -0.14 -0.14 -0.04 -0.13 -0.04 -0.12 -0.12 -0.16 -0.08 -0.14 -0.18 -0.18 -0.17 -0.12 -0.10 -0.11 S3 0.31 0.88 0.43 1.75 1.71 1.97 1.82 0.53 0.57 1.14 2.50 1.27 0.57 0.57 2.17 1.76 0.19 1.20 -0.02 -0.06 0.50 1.10 0.20 0.87 0.73 0.77 0.83 0.48 0.05 0.07 S2 0.30 0.87 0.42 1.74 1.70 1.96 1.81 0.53 0.56 1.14 2.50 1.26 0.56 0.56 2.16 1.75 0.18 1.19 -0.02 -0.06 0.50 1.09 0.19 0.86 0.73 0.77 0.83 0.48 0.05 0.07 S1→S2 S1→S3 S1→S4 S4→S3 -0.13 -0.13 -0.13 -0.13 -0.09 -0.09 -0.15 -0.15 -0.12 -0.12 -0.13 -0.14 -0.14 -0.14 -0.08 -0.08 -0.07 -0.08 -0.14 -0.13 -0.02 -0.01 -0.13 -0.13 -0.07 -0.08 -0.07 -0.08 -0.15 -0.15 -0.15 -0.15 -0.04 -0.05 -0.14 -0.14 -0.04 -0.04 -0.12 -0.12 -0.13 -0.12 -0.17 -0.17 -0.08 -0.09 -0.15 -0.15 -0.18 -0.18 -0.18 -0.18 -0.17 -0.17 -0.12 -0.12 -0.10 -0.10 -0.11 -0.11 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.00 0.00 0.01 0.01 0.01 0.00 0.00 0.01 0.01 0.00 0.01 0.00 0.00 0.01 0.01 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 7 of 8 Table 7. Building Inundation DepthsCodeNEXT Detention Analysis (West Bouldin/Del Curto) Table 5: Building Inundation Depths Freese and Nichols, Inc. 12/21/2017 TCAD Address Property ID Bldg ID 307 310 312 313 316 317 318 319 322 326 331 346 445 455 457 461 466 478 483 486 487 488 490 495 497 511 512 527 528 537 547 303192 2301 DEL CURTO RD 78704 303184 2215 IVA LN 78704 303126 2507 BLUEBONNET LN 78704 303185 2213 IVA LN 78704 303130 2300 DEL CURTO RD 78704 303186 2211 IVA LN 78704 707241 2501 S LAMAR BLVD 78704 303187 2209 IVA LN 78704 302993 2303 KINNEY RD 78704 696223 2216 THORNTON RD 78704 303129 2212 DEL CURTO RD 78704 303137 2208 DEL CURTO RD 78704 302996 2201 KINNEY RD 78704 303153 2310 S LAMAR BLVD 78704 303158 2330 S LAMAR BLVD 78704 303155 2320 S LAMAR BLVD 78704 303229 2238 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303234 2200 S LAMAR BLVD 78704 303232 2228 S LAMAR BLVD 78704 303140 2305 BLUEBONNET LN 78704 303156 2324 S LAMAR BLVD 78704 303152 2300 S LAMAR BLVD 78704 303231 2129 GOODRICH AVE 78704 303232 2228 S LAMAR BLVD 78704 863462 2301 BLUEBONNET LN 78704 303233 2127 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 303228 2125 GOODRICH AVE 78704 303228 2125 GOODRICH AVE 78704 303234 2200 S LAMAR BLVD 78704 Bldg Area, sf 471 1,128 2,835 1,713 1,304 1,653 19,363 1,505 1,580 3,199 1,364 9,083 16,821 4,532 13,119 2,867 1,908 610 2,693 2,519 2,752 7,533 16,038 1,973 2,062 4,084 5,063 3,594 3,258 7,283 1,581 Notes: 1. The finish floor elevation (FFE) for each building is assumed to be 6" above ground at the building centroid. 2. Inundation depth at each building is calculated as the max adjacent water surface elevation (WSE) minus FFE. 3. Inundation depth is limited to max adjacent depth of flow on the ground. 4. A negative inundation value indicates that the FFE is above the max adjacent WSE. 5. An inundation value of "-" indicates no water adjacent to the building. Inundation Depths (100y) S4 0.56 0.23 0.25 0.22 1.00 0.43 3.67 0.43 0.43 0.25 0.10 0.48 0.25 0.10 1.06 0.07 0.14 0.21 0.37 0.48 0.56 0.92 0.21 0.02 0.21 0.54 0.23 1.34 0.23 0.09 0.80 S1 0.55 0.22 0.25 0.22 1.00 0.43 3.67 0.43 0.43 0.24 0.10 0.47 0.25 0.10 1.06 0.06 0.14 0.21 0.37 0.47 0.56 0.91 0.20 0.01 0.21 0.54 0.22 1.33 0.23 0.08 0.80 -0.12 -0.11 -0.13 -0.11 -0.17 -0.14 -0.07 -0.14 -0.05 0.01 -0.21 -0.22 -0.02 0.00 0.00 0.00 0.01 0.00 -0.01 0.01 -0.01 -0.02 0.00 0.01 0.00 -0.01 0.01 0.00 0.00 0.01 0.00 S3 0.43 0.11 0.12 0.11 0.83 0.29 3.60 0.29 0.38 0.25 -0.11 0.25 0.23 0.10 1.06 0.06 0.15 0.21 0.36 0.48 0.55 0.89 0.20 0.02 0.21 0.53 0.23 1.33 0.23 0.09 0.80 S2 0.43 0.11 0.12 0.11 0.83 0.29 3.59 0.29 0.38 0.24 -0.11 0.25 0.23 0.09 1.06 0.06 0.15 0.21 0.36 0.47 0.54 0.89 0.19 0.02 0.21 0.52 0.22 1.32 0.23 0.08 0.79 S1→S2 S1→S3 S1→S4 S4→S3 -0.13 -0.12 -0.12 -0.11 -0.13 -0.13 -0.11 -0.11 -0.17 -0.17 -0.14 -0.14 -0.07 -0.08 -0.14 -0.14 -0.05 -0.05 0.00 0.00 -0.21 -0.21 -0.23 -0.22 -0.02 -0.02 0.00 -0.01 0.00 0.00 -0.01 0.00 0.01 0.01 0.00 0.00 -0.01 -0.01 0.00 0.00 -0.01 -0.02 -0.03 -0.02 -0.01 -0.01 0.00 0.01 0.00 0.00 -0.01 -0.02 0.00 0.00 -0.01 -0.01 0.00 0.00 0.00 0.00 0.00 -0.01 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.01 0.00 0.01 0.01 0.01 0.00 0.00 0.01 0.01 0.00 0.01 0.00 6. Inundation change equals final inundation minus initial. 7. When the final inundation value is "-", the inundation change represents all adjacent water removed. 8. Changes are shaded red for increases, green for decreases. 9. Outlier values are shaded grey and excluded from report summaries. Outliers generally result from a high WSE/ shallow depth on one side and low WSE/high depth on the other. 8 of 8 Table 7. Building Inundation Depths