Appendix D. Traffic Noise Estimates

California Vehicle Noise Calculation

Project Number: 1074-36Project Name: LAUSD CRES 14

Model Description: REMEL based on Caltrans TeNS: Figure N-5511.1Model Assumptions: no shielding, no barrier

Scenarios: AM Peak-Hour Leq's w/ calc'd ADT Ldn's Intersection/Link Volumes: Garland, Aspen figures 4/13/05

Vehicle Distribution Fractions Number of Hours: (hrs)HD Tks MD Tks Autos 7am-10pm 10pm-7am

Distance: >15m Ref: 15.0 (m) 1.0 1.0 98.0 Fraction 15 9Drop-off (alpha 0.5=soft, 0=hard): 0.00 (alpha) 78.7 71.3 59.4 REMEL (dBA) Backgd Traffic: (%)

Speed: 25 (mph) 7am-10pm 10pm-7am40 (kph) 85 15

65 60 55Leq(h) Leq(h) Leq(h) Ldn Ldn Ldn

ADT AM Pk Av Day Hr Av Nite Hr AM Pk Av Day Hr Av Nite Hr Ldn Contour Contour ContourSEGMENT/CONDITION (vpd) (vph) (vph) (vph) (dBA) (dBA) (dBA) (dBA) (ft) (ft) (ft)Mohawk: n/o Marathon 2004 Existing 1620 120 91.8 27.0 53.89 52.73 47.42 55.1 10.8 23.2 50.0

2010 Baseline 1715 127 97.2 28.6 54.14 52.98 47.66 55.4 11.2 24.1 51.92010 with Project 1905 183 108.0 31.8 55.73 53.43 48.12 55.8 12.0 25.9 55.7

Marathon/New: e/o Mohawk 2004 Existing 1418 105 80.4 23.6 53.31 52.15 46.84 54.5 9.9 21.2 45.82010 Baseline 1512 112 85.7 25.2 53.59 52.43 47.12 54.8 10.3 22.2 47.82010 with Project 1566 128 88.7 26.1 54.17 52.58 47.27 55.0 10.5 22.7 48.9

Marathon: w/o Mohawk 2004 Existing 1688 125 95.7 28.1 54.07 52.91 47.59 55.3 11.1 23.9 51.42010 Baseline 1796 133 101.8 29.9 54.34 53.18 47.86 55.6 11.5 24.9 53.62010 with Project 2027 201 114.9 33.8 56.13 53.70 48.39 56.1 12.5 27.0 58.1

Rosemont: n/o Santa Ynez 2004 Existing 945 70 53.6 15.8 51.55 50.39 45.08 52.8 7.5 16.2 34.92010 Baseline 999 74 56.6 16.7 51.79 50.63 45.32 53.0 7.8 16.8 36.22010 with Project 1540 233 87.3 25.7 56.78 52.51 47.20 54.9 10.4 22.4 48.3

Santa Ynez: e/o Rosemont 2004 Existing 608 45 34.5 10.1 49.63 48.47 43.16 50.9 5.6 12.1 26.02010 Baseline 648 48 36.7 10.8 49.92 48.75 43.44 51.1 5.8 12.6 27.12010 with Project 1199 210 67.9 20.0 56.32 51.42 46.11 53.8 8.8 19.0 40.9

Santa Ynez: w/o Alvarado 2004 Existing 743 55 42.1 12.4 50.51 49.35 44.03 51.7 6.4 13.8 29.72010 Baseline 797 59 45.2 13.3 50.81 49.65 44.34 52.0 6.7 14.5 31.22010 with Project 1528 274 86.6 25.5 57.48 52.48 47.16 54.9 10.4 22.3 48.1

Alvarado: n/o Santa Ynez 2004 Existing 26050 2605 1476.2 434.2 67.26 64.79 59.48 67.2 68.6 147.9 318.62010 Baseline 27620 2762 1565.1 460.3 67.51 65.05 59.73 67.4 71.4 153.8 331.32010 with Project 28350 2835 1606.5 472.5 67.63 65.16 59.85 67.5 72.6 156.5 337.1

\1074-xx\Noi-CRES_14rev2-Leq.xls -Leq 5/20/2005 - Page 1 of 2

Turning Movement Data

Project Number: 1074-36Project Name: LAUSD CRES 14

Method of Analysis: turning movements (source AM Peak Hour)Basis: Garland, daily traffic and AM peak volumes, figures, report 4/11/05

Existing Uses (ADT/AM Peak) = 270/20 = 13.5Project (ADT/AM Peak) = 1020/297 = 3.4

Mohawk and Marathon/New Mohawk and Marathon/New---- East Bound ---- ---- West Bound ---- ---- North Bound ---- ---- South Bound ----

L T R L T R L T R L T R NB-app SB-app EB-app WB-appMohawk and Marathon/New

2004 Existing / AM peak 30 25 0 0 30 10 0 0 0 40 0 40 0 120 125 1052010 Baseline / AM peak 32 27 0 0 32 11 0 0 0 42 0 42 0 127 133 1122010 with Project / AM peak 42 10 0 0 63 52 0 0 0 3 0 86 0 183 201 128

AM peak Project-only 0 56 68 16ADT Existing (AM peak *13.5) 1620 1688 1418

ADT Baseline (AM peak *13.5) 1715 1796 1512ADT Project-only (AM peak *3.4) 190 231 54

ADT with Project 1905 2027 1566

Santa Ynez and New Santa Ynez and New---- East Bound ---- ---- West Bound ---- ---- North Bound ---- ---- South Bound ----

L T R L T R L T R L T R NB-app SB-app EB-app WB-appSanta Ynez and New

2004 Existing / AM peak 0 0 0 02010 Baseline / AM peak 0 0 0 02010 with Project / AM peak 48 29 0 0 0 101 0 0 0 0 0 0 0 149 77 130

AM peak Project-only 0 149 77 130

Santa Ynez and Rosemont Santa Ynez and Rosemont---- East Bound ---- ---- West Bound ---- ---- North Bound ---- ---- South Bound ----

L T R L T R L T R L T R NB-app SB-app EB-app WB-appSanta Ynez and Rosemont

2004 Existing / AM peak 0 0 0 5 0 15 0 20 10 15 20 0 55 70 0 452010 Baseline / AM peak 0 0 0 5 0 16 0 21 11 16 21 0 58 74 0 482010 with Project / AM peak 0 0 0 10 0 41 0 26 31 128 38 0 105 233 0 210

AM peak Project-only 47 159 0 162ADT Existing (AM peak *13.5) 945 608

ADT Baseline (AM peak *13.5) 999 648ADT Project-only (AM peak *3.4) 541 551

ADT with Project 1540 1199

Santa Ynez and Alvarado Santa Ynez and Alvarado---- East Bound ---- ---- West Bound ---- ---- North Bound ---- ---- South Bound ----

L T R L T R L T R L T R NB-app SB-app EB-app WB-appSanta Ynez and Alvarado

2004 Existing / AM peak 5 0 30 0 0 0 10 830 0 0 1760 10 2630 2605 55 02010 Baseline / AM peak 5 0 32 0 0 0 11 880 0 0 1866 11 2789 2762 59 02010 with Project / AM peak 5 0 116 0 0 0 102 880 0 0 1899 51 2997 2835 274 0

AM peak Project-only 208 73 215 0ADT Existing (AM peak *13.5) 743

ADT Baseline (AM peak *13.5) 797ADT Project-only (AM peak *3.4) 731

ADT with Project 1528

\1074-xx\Noi-CRES_14rev2-Leq.xls -Turning 5/20/2005 - Page 2 of 2