Noise Calculation Data Projected 4% Annual Growth 10-Year 2 Road Percent 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Lyndon B

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Springs Apartments - 201702107: Noise Calculation Data Projected 4% Annual Growth 10-Year 2 Road Percent 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Lyndon B. Johnson Freeway Gross Total ADT 134960 140358 145973 151812 157884 164199 170767 177598 184702 192090 199774 60 mph Total Cars 89% 120654 125480 130500 135720 141148 146794 152666 158773 165124 171729 178598 Truck Traffic1 = Total Medium Trucks 8% 10729 11158 11605 12069 12552 13054 13576 14119 14684 15271 15882 11% Total Heavy Trucks 3% 3576 3719 3868 4023 4184 4351 4525 4706 4895 5090 5294

Typical % Night Speed Over Within 1/4 Mile of At- Bolted Railroad Train ATO Traffic Crossing Grade Crossing? Tracks? No railroads within 3,000 ft. radius

Airport (9,000+ flights annually) Distance Outside Noise Contours No primary or military airports within 15 mile radius

Noise Assement Locations (NAL) NAL #1 SW corner of Residential NAL #2 - Swimming NAL #3 - Building Pool Playground Effective Effective 10-year Distance Distance 10-year Noise Sources Effective Distance (feet) DNL (feet) 10-year DNL (feet) DNL Lyndon B. Johnson Freeway 459 71.4 658 69 554 70.1

NAL Combined DNL: 71.4 69 70.1 Barrier Wall and STraCAT for Buildings -35.52 Barrier Wall -6.2873 Garages -6.814 NEW Combined DNL with Attenuation: 35.88 62.7127 63.286

Criteria ADT = Average Daily Traffic Count Acceptable: 65 or less DNL = Day/Night Noise Level Normally Not Acceptable: 66-75 1 = Percent of Truck Traffic is obtained from the TxDOT Statewide Planning Map Not Acceptable: 75 or greater 2 = Breakdown of Truck Traffic is assumed, 75% Medium Trucks and 25% Heavy Trucks Note: When percentage of truck traffic is not available, the default is 15% Medium Trucks and 5% Heavy Trucks of the total ADT ¯

Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community, Esri, HERE, DeLorme, MapmyIndia, © OpenStreetMap contributors sources: ESRI Copyright ©2016 Phase Engineering, Inc. Note: Property location and boundary are representative only. Miles 0 0.05 0.1 0.2 0.3 0.4 Noise Sources Map N

Subject Property 1000 foot radius 3000 foot radius PEI Project No: 201702107 ¯

~554 ft.

^_ NAL #3 - proposed ~658 ft. playground area ~459 ft.

^_ NAL #1 - proposed ^_ residential building NAL #2 - proposed swimming pool

Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community Source: ESRI WMS Copyright ©2016 Phase Engineering, Inc. Note: Property location and boundary are representative only. Feet 0 125 250 500 Distance (Noise Assessment Level)

Location: 4702 Ambassador Way Balch Springs, TX 75180 PEI Project No: 201702107 Dentton Collllinin Riicharrdson Countyty ADDISON Countyty 6" ROCKWALL MUNI 6" ¤£66 ¦¨§635 Garlland ST66 GARLAND/DFW HELOPLEX 6" ¦¨§30 DALLAS LOVE FIELD Rockwallll ^6 Countyty ¦¨§635 ST78

DallasDALLAS CBD VERTIPORT Dallllas 6" Mesquiitete Countyty MESQUITE METRO ST180 ST180 6" ¦¨§35E ¤£80 ST310

¦¨§20 DALLAS EXECUTIVE ¦¨§20 6" Subject Property ST310

¦¨§45 Kauffman Countyty LANCASTER RGNL 6" 35E ¨¦§ ¦¨§45

¤£77 Ellllisis Countyty ¤£77

Sources: Federal Aviation Administration, Department of Defense, National Transportation Atlas, ESRI Property boundary and locations are representative only. Miles N 0 1.75 3.5 7 10.5 14 1:350,000 Texas Airport Hazards NPIAS 2015-2019 Report Ownership Subject Property National Transportation Atlas 6 Public 0 Private O Military - Air Force @ Military - Army 15 Mile Radius Runway Service Level Military Airfield / Airport / Station " Reliever Airport ^ Commercial Service - Primary " Air Force Station Airport Joint Use Airport General Aviation Airport " Commercial Service - Nonprimary Airfield International Airport Military Airfield Military Airport Department of Defense Military Installations, Ranges, and Training Areas PEI Project No: 201702107 Maps Measure Query Sketch Legend About Base Maps TxDOT Google Imagery Light Gray Basemap Overlays Clear Overlays AADT Area Offices Cemeteries COG Control Section Freight Network (FHWA) Freight Network (TxDOT) Functional Classification & Urban Areas Future Traffic & Percent Truck Highway Designations Maintenance Office MPO National Highway System Non-Attainment Areas Permanent Count Stations Projects - Construction Scheduled Projects - Finalizing for Construction Projects - Under Development Projects - Long Term Planning Railroads Reference Markers Roadway Inventory - On-System Roadbeds Speed Limits State House Districts State Senate Districts Texas Trunk System & Urban Areas Top 100 Congested Roadways US House Districts Vertical Clearance Maps Measure Query Sketch Legend About Base Maps TxDOT Google Imagery Light Gray Basemap Overlays Clear Overlays AADT Area Offices Cemeteries COG Control Section Freight Network (FHWA) Freight Network (TxDOT) Functional Classification & Urban Areas Future Traffic & Percent Truck Highway Designations Maintenance Office MPO National Highway System Non-Attainment Areas Permanent Count Stations Projects - Construction Scheduled Projects - Finalizing for Construction Projects - Under Development Projects - Long Term Planning Railroads Reference Markers Roadway Inventory - On-System Roadbeds Speed Limits State House Districts State Senate Districts Texas Trunk System & Urban Areas Top 100 Congested Roadways US House Districts Vertical Clearance

Springs Apartments ‐ Building Wall Construction All units are in feet Total Fiber Total Fiber NAL #1 ‐ Southwest Corner Width Height Wall sf Stone % Stone sf cement % cement sf Windows Doors Unit on end, 1st story 33.75 8 270 40% 108 60% 162 2‐Vinyl (3x5) none Floor Plan ‐ P.28 1‐Vinyl (5x5) Elevation ‐ P. 36

FILENAME: C6.0 Site Plan.dwg FULL PATH: G:\production500\002800\2813\001\Civil\Drawings\plot SheetsG:\production500\002800\2813\001\Civil\Drawings\plot Sheets\C6.0 Site Plan PLOTTED BY: Chad Stewart PLOTTED ON: Thursday, August 03, 2017

EX-8'' SS EX-8'' W

EX-8'' SS EX-8'' W INTERSTATE HIGHWAY 635 EX-8'' SS

EX-8'' W

EX-8'' SS

EX-8'' W

EX-8'' SS

11.644 ACRES 11.644 OVERALL EX-8'' W EX-8'' SS

EX-8'' SS EX-8'' W

Ambassador Way

EX-8'' SS

EX-8'' W

EX-8'' SS

EX-8'' W

EX-8'' SS

KEYPORT DRIVE W EX-8''

VAN VAN PARKING CALCULATIONS MULTI-FAMILY PROPOSED OPEN SPACES 1 BED ROOM UNIT TYPE 2 BED ROOM 3 BED ROOM OPEN SPACES REQUIRED GUEST PARKING PARKING SUMMARY -OPEN -COVERED -GARAGE -ACCESSIBLE TOTAL PARKING

NOTED 1. CURB RADII ARE 2' UNLESS OTHERWISE SPECIFIED ON SITE PLAN NOTES: 2. DIMENSIONS ARE SHOWN TO FACE OF CURB UNLESS OTHERWISE OR SITE COORDINATES ”

40 ” # SITE LEGEND GRAPHIC SCALE 0 1 inch= 40 ft. ( IN FEET ) SPACES/UNIT REQUIRED 9 (2 VAN) 20 1.5 0.2 1 2 403 PARKING COUNT PROPOSED CURB PROPERTY BOUNDARY SECURITY FENCE SCREENING WALL ADJOINERS - - -

40 UNITS “ 110 221 28 83 PROPOSED 9 (2 VAN) 404 444 10 24 80 PARKING 166 165 404 403 28 44 DATE: DESIGNED BY: DRAWN BY: SHEET: CHECKED BY: JOB NO. REVISIONS

Site Plan NO. DATE DESCRIPTION C5.0 06-30-17 AUGUST 3, 2017 SPRINGS APARTMENTS B002813 CMB CMS CMS 4520 Ambassador Way Balch Springs, Texas 75180

Barrier Performance Module Springs Apartments, Balch Springs, Texas NAL#2 – Swimming Pool

Line of Sight angle (α) subtended by the barrier at observer’s location: The ends of the barrier are infinite when combined with the building = 180˚

Observer’s Line of Sight

Noise Source, 8’ Stone Wall height of vehicles

Barrier Height (H) = 8’ + Δ Elev +1’ = 9’ Noise Source Height (S) = 6’

Observer’s Height (O) = 5’

IH 635 Elevation – Approx. Existing Boundary Elevation – 459 ft Approx. 458 ft Ground Elevation Pool Elevation – 458.5 ft

Distance from Noise Source to Barrier (R1) = 390’ Distance from Observer to Barrier (D1) = 270’ 1/15/2018 BPM Calculator - HUD Exchange Home (/) > Programs (/programs/) > Environmental Review (/programs/environmental-review/) > BPM Calculator

Barrier Performance Module This module provides to the user a measure on the barrier's eectiveness on noise reduction. A list of the input/output variables and their denitions, as well as illustrations of dierent scenarios are provided.

Calculator View Day/Night Noise Level Calculator (/programs/environmental-review/dnl-calculator/)

View Descriptions of the Input/Output variables.

Note: Tool tips, containing eld specic information, have been added in this tool and may be accessed by hovering over the Input and Output variables with the mouse.

WARNING: If there is direct line-of-sight between the Source and the Observer, the module will report erroneous attenuation. “Direct line-of-sight” means if the 5’ tall Observer can see the noise Source (cars, trucks, trains, etc.) over the Barrier (wall, hill/excavation, building, etc.), the current version of Barrier Performance Module will not accurately calculate the attenuation provided. In this instance, there is unlikely to be any appreciable attenuation.

Road/Rail Site DNL:

Note: Barrier height must block the line of sight

Input Data

1 H 9 R 390

1 S 6 D 270

O 5 α 180

Calculate Output

Output Data

h 4 R 390

D 270 FS 6.2873

New Site DNL: -6.2873

Refresh

Note: If you have separate Road and Rail DNL values, please enter the values below to calculate the new site DNL:

Road DNL:

Rail DNL:

Calculate

Combined New Site DNL:

69 https://www.hudexchange.info/programs/environmental-review/bpm-calculator/ 1/4 1/15/2018 BPM Calculator - HUD Exchange Input/Output Variables Input Variables The following variables and denitions from the barrier being assessed are the input required for the web-based barrier performance module:

H = Barrier Height S = Noise Source Height O = Observer Height (known as the receiver) R1 = Distance from Noise Source to Barrier D1 = Distance from the Observer to the Barrier α = Line of sight angle between the Observer and the Noise Source, subtended by the barrier at observer's location

Output Variables Denitions of the output variables from the mitigation module of the Day/Night Noise Level Assessment Tools as part of the Assessment Tools for Environmental Compliance:

h = The shortest distance from the barrier top to the line of sight from the Noise source to the Observer. R = Slant distance along the line of sight from the Barrier to the Noise Source D = Slant distance along the line of sight from the Barrier to the Observer

The “actual barrier performance for barriers of nite length” is noted on the worksheets(in the Guidebook) as FS.

Barrier Implementation Scenarios Locate the cursor on the following thumbnails to enlarge the respective scenario as implementation examples of the barrier performance module.

Scenario #1:

Noise receiver at a higher elevation than the noise source and a man- made noise barrier in between the receiver and the source.

(https://www.hudexchange.info/resources/documents/Barrier- Performance-Module-Barrier-Implementation-Scenario-1.gif) view larger version of image (/resource/3841/barrier-performance-module-bpm-barrier- implementation-scenarios/)

https://www.hudexchange.info/programs/environmental-review/bpm-calculator/ 2/4

Barrier Performance Module Springs Apartments, Balch Springs, Texas NAL#3 – Playground

Line of Sight angle (α) subtended by the barrier at observer’s location: The ends of the barrier are infinite when combined with the building = 180˚

Observer’s Line of Sight

Garages and 8’ Noise Source, Stone Wall height of vehicles

Barrier Height (H) = 8’ + Δ Elev +1’ = 9’ Noise Source Height (S) = 6’

Observer’s Height (O) = 5’

IH 635 Elevation – Approx. Existing Boundary Elevation – 459 ft Approx. 458 ft Ground Elevation Playground Elev. – 458 ft

Distance from Noise Source to Barrier (R1) = 390’ Distance from Observer to Barrier (D1) = 160’ 1/15/2018 BPM Calculator - HUD Exchange Home (/) > Programs (/programs/) > Environmental Review (/programs/environmental-review/) > BPM Calculator

Calculator View Day/Night Noise Level Calculator (/programs/environmental-review/dnl-calculator/)

View Descriptions of the Input/Output variables.

Note: Tool tips, containing eld specic information, have been added in this tool and may be accessed by hovering over the Input and Output variables with the mouse.

Road/Rail Site DNL:

Note: Barrier height must block the line of sight

Input Data

1 H 9 R 390

1 S 6 D 160

O 5 α 180

Calculate Output

Output Data

h 4 R 390

D 160 FS 6.814

New Site DNL: -6.814

Refresh

Note: If you have separate Road and Rail DNL values, please enter the values below to calculate the new site DNL:

Road DNL:

Rail DNL:

Calculate

Combined New Site DNL:

70 https://www.hudexchange.info/programs/environmental-review/bpm-calculator/ 1/4 1/15/2018 BPM Calculator - HUD Exchange Input/Output Variables Input Variables The following variables and denitions from the barrier being assessed are the input required for the web-based barrier performance module:

Output Variables Denitions of the output variables from the mitigation module of the Day/Night Noise Level Assessment Tools as part of the Assessment Tools for Environmental Compliance:

The “actual barrier performance for barriers of nite length” is noted on the worksheets(in the Guidebook) as FS.

Barrier Implementation Scenarios Locate the cursor on the following thumbnails to enlarge the respective scenario as implementation examples of the barrier performance module.

Scenario #1:

Noise receiver at a higher elevation than the noise source and a man- made noise barrier in between the receiver and the source.

https://www.hudexchange.info/programs/environmental-review/bpm-calculator/ 2/4