Agenda — Desert Hot Springs City Council, December 12, 2024 (part 6 of 16)

197 16.42 0.13 0.086 ( 0.075) 0.016 0.071
198 16.50 0.13 0.086 ( 0.075) 0.016 0.071
199 16.58 0.10 0.065 ( 0.074) 0.012 0.053
200 16.67 0.10 0.065 ( 0.074) 0.012 0.053
201 16.75 0.10 0.065 ( 0.074) 0.012 0.053
202 16.83 0.10 0.065 ( 0.073) 0.012 0.053
203 16.92 0.10 0.065 ( 0.073) 0.012 0.053
204 17.00 0.10 0.065 ( 0.072) 0.012 0.053
205 17.08 0.17 0.108 ( 0.072) 0.019 0.088
206 17.17 0.17 0.108 ( 0.072) 0.019 0.088
207 17.25 0.17 0.108 ( 0.071) 0.019 0.088
208 17.33 0.17 0.108 ( 0.071) 0.019 0.088
209 17.42 0.17 0.108 ( 0.071) 0.019 0.088
210 17.50 0.17 0.108 ( 0.070) 0.019 0.088
211 17.58 0.17 0.108 ( 0.070) 0.019 0.088
212 17.67 0.17 0.108 ( 0.070) 0.019 0.088
213 17.75 0.17 0.108 ( 0.069) 0.019 0.088
214 17.83 0.13 0.086 ( 0.069) 0.016 0.071
215 17.92 0.13 0.086 ( 0.069) 0.016 0.071
216 18.00 0.13 0.086 ( 0.068) 0.016 0.071
217 18.08 0.13 0.086 ( 0.068) 0.016 0.071
218 18.17 0.13 0.086 ( 0.067) 0.016 0.071
219 18.25 0.13 0.086 ( 0.067) 0.016 0.071
220 18.33 0.13 0.086 ( 0.067) 0.016 0.071
221 18.42 0.13 0.086 ( 0.067) 0.016 0.071
222 18.50 0.13 0.086 ( 0.066) 0.016 0.071
223 18.58 0.10 0.065 ( 0.066) 0.012 0.053
224 18.67 0.10 0.065 ( 0.066) 0.012 0.053
225 18.75 0.10 0.065 ( 0.065) 0.012 0.053
226 18.83 0.07 0.043 ( 0.065) 0.008 0.035
227 18.92 0.07 0.043 ( 0.065) 0.008 0.035
228 19.00 0.07 0.043 ( 0.064) 0.008 0.035
229 19.08 0.10 0.065 ( 0.064) 0.012 0.053
230 19.17 0.10 0.065 ( 0.064) 0.012 0.053
231 19.25 0.10 0.065 ( 0.063) 0.012 0.053
232 19.33 0.13 0.086 ( 0.063) 0.016 0.071
233 19.42 0.13 0.086 ( 0.063) 0.016 0.071
234 19.50 0.13 0.086 ( 0.063) 0.016 0.071
235 19.58 0.10 0.065 ( 0.062) 0.012 0.053
236 19.67 0.10 0.065 ( 0.062) 0.012 0.053
237 19.75 0.10 0.065 ( 0.062) 0.012 0.053
238 19.83 0.07 0.043 ( 0.061) 0.008 0.035
239 19.92 0.07 0.043 ( 0.061) 0.008 0.035
240 20.00 0.07 0.043 ( 0.061) 0.008 0.035
241 20.08 0.10 0.065 ( 0.061) 0.012 0.053
242 20.17 0.10 0.065 ( 0.060) 0.012 0.053
243 20.25 0.10 0.065 ( 0.060) 0.012 0.053
244 20.33 0.10 0.065 ( 0.060) 0.012 0.053
245 20.42 0.10 0.065 ( 0.060) 0.012 0.053
246 20.50 0.10 0.065 ( 0.059) 0.012 0.053
Item Number: 1.

Page 871 of 2517 ends

247 20.58 0.10 0.065 ( 0.059) 0.012 0.053
248 20.67 0.10 0.065 ( 0.059) 0.012 0.053
249 20.75 0.10 0.065 ( 0.059) 0.012 0.053
250 20.83 0.07 0.043 ( 0.058) 0.008 0.035
251 20.92 0.07 0.043 ( 0.058) 0.008 0.035
252 21.00 0.07 0.043 ( 0.058) 0.008 0.035
253 21.08 0.10 0.065 ( 0.058) 0.012 0.053
254 21.17 0.10 0.065 ( 0.057) 0.012 0.053
255 21.25 0.10 0.065 ( 0.057) 0.012 0.053
256 21.33 0.07 0.043 ( 0.057) 0.008 0.035
257 21.42 0.07 0.043 ( 0.057) 0.008 0.035
258 21.50 0.07 0.043 ( 0.057) 0.008 0.035
259 21.58 0.10 0.065 ( 0.056) 0.012 0.053
260 21.67 0.10 0.065 ( 0.056) 0.012 0.053
261 21.75 0.10 0.065 ( 0.056) 0.012 0.053
262 21.83 0.07 0.043 ( 0.056) 0.008 0.035
263 21.92 0.07 0.043 ( 0.056) 0.008 0.035
264 22.00 0.07 0.043 ( 0.055) 0.008 0.035
265 22.08 0.10 0.065 ( 0.055) 0.012 0.053
266 22.17 0.10 0.065 ( 0.055) 0.012 0.053
267 22.25 0.10 0.065 ( 0.055) 0.012 0.053
268 22.33 0.07 0.043 ( 0.055) 0.008 0.035
269 22.42 0.07 0.043 ( 0.054) 0.008 0.035
270 22.50 0.07 0.043 ( 0.054) 0.008 0.035
271 22.58 0.07 0.043 ( 0.054) 0.008 0.035
272 22.67 0.07 0.043 ( 0.054) 0.008 0.035
273 22.75 0.07 0.043 ( 0.054) 0.008 0.035
274 22.83 0.07 0.043 ( 0.054) 0.008 0.035
275 22.92 0.07 0.043 ( 0.054) 0.008 0.035
276 23.00 0.07 0.043 ( 0.053) 0.008 0.035
277 23.08 0.07 0.043 ( 0.053) 0.008 0.035
278 23.17 0.07 0.043 ( 0.053) 0.008 0.035
279 23.25 0.07 0.043 ( 0.053) 0.008 0.035
280 23.33 0.07 0.043 ( 0.053) 0.008 0.035
281 23.42 0.07 0.043 ( 0.053) 0.008 0.035
282 23.50 0.07 0.043 ( 0.053) 0.008 0.035
283 23.58 0.07 0.043 ( 0.053) 0.008 0.035
284 23.67 0.07 0.043 ( 0.053) 0.008 0.035
285 23.75 0.07 0.043 ( 0.053) 0.008 0.035
286 23.83 0.07 0.043 ( 0.052) 0.008 0.035
287 23.92 0.07 0.043 ( 0.052) 0.008 0.035
288 24.00 0.07 0.043 ( 0.052) 0.008 0.035
(Loss Rate Not Used)
Sum = 100.0 Sum = 53.7
Flood volume = Effective rainfall 4.47(In)
times area 4.0(Ac.)/[(In)/(Ft.)] = 1.5(Ac.Ft)
Total soil loss = 0.92(In)
Total soil loss = 0.304(Ac.Ft)
Total rainfall = 5.39(In)
Flood volume = 64617.6 Cubic Feet
Item Number: 1.

Page 872 of 2517 ends

Total soil loss = 13253.3 Cubic Feet
-------------------------------------------------------------------- Peak flow rate of this hydrograph = 2.581(CFS)
-------------------------------------------------------------------- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 24 - H O U R S T O R M
R u n o f f H y d r o g r a p h
-------------------------------------------------------------------- Hydrograph in 5 Minute intervals ((CFS))
-------------------------------------------------------------------- Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5 10.0
----------------------------------------------------------------------- 0+ 5 0.0006 0.08 Q | | | |
0+10 0.0015 0.14 Q | | | |
0+15 0.0025 0.14 Q | | | |
0+20 0.0038 0.18 Q | | | |
0+25 0.0052 0.21 Q | | | |
0+30 0.0067 0.21 Q | | | |
0+35 0.0081 0.21 Q | | | |
0+40 0.0096 0.21 Q | | | |
0+45 0.0111 0.21 Q | | | |
0+50 0.0128 0.26 VQ | | | |
0+55 0.0148 0.28 VQ | | | |
1+ 0 0.0167 0.28 VQ | | | |
1+ 5 0.0184 0.24 Q | | | |
1+10 0.0199 0.22 Q | | | |
1+15 0.0213 0.21 Q | | | |
1+20 0.0228 0.21 Q | | | |
1+25 0.0243 0.21 Q | | | |
1+30 0.0257 0.21 Q | | | |
1+35 0.0272 0.21 Q | | | |
1+40 0.0287 0.21 Q | | | |
1+45 0.0301 0.21 Q | | | |
1+50 0.0319 0.26 VQ | | | |
1+55 0.0338 0.28 VQ | | | |
2+ 0 0.0358 0.28 VQ | | | |
2+ 5 0.0377 0.28 |Q | | | |
2+10 0.0397 0.28 |Q | | | |
2+15 0.0416 0.28 |Q | | | |
2+20 0.0436 0.28 |Q | | | |
2+25 0.0456 0.28 |Q | | | |
2+30 0.0475 0.28 |Q | | | |
2+35 0.0498 0.33 |Q | | | |
2+40 0.0522 0.35 |Q | | | |
2+45 0.0546 0.35 |Q | | | |
2+50 0.0571 0.35 |Q | | | |
2+55 0.0595 0.35 |Q | | | |
3+ 0 0.0620 0.35 |Q | | | |
3+ 5 0.0644 0.35 |Q | | | |
Item Number: 1.

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3+10 0.0668 0.35 |Q | | | |
3+15 0.0693 0.35 |Q | | | |
3+20 0.0717 0.35 |Q | | | |
3+25 0.0742 0.35 |Q | | | |
3+30 0.0766 0.35 |QV | | | |
3+35 0.0791 0.35 |QV | | | |
3+40 0.0815 0.35 |QV | | | |
3+45 0.0839 0.35 |QV | | | |
3+50 0.0867 0.40 |QV | | | |
3+55 0.0896 0.42 |QV | | | |
4+ 0 0.0925 0.43 |QV | | | |
4+ 5 0.0955 0.43 |QV | | | |
4+10 0.0984 0.43 |QV | | | |
4+15 0.1013 0.43 |QV | | | |
4+20 0.1045 0.47 |QV | | | |
4+25 0.1079 0.49 |QV | | | |
4+30 0.1114 0.50 |Q V | | | |
4+35 0.1148 0.50 |Q V | | | |
4+40 0.1182 0.50 |Q V | | | |
4+45 0.1216 0.50 |Q V | | | |
4+50 0.1253 0.54 | QV | | | |
4+55 0.1292 0.56 | QV | | | |
5+ 0 0.1331 0.57 | QV | | | |
5+ 5 0.1365 0.48 |Q V | | | |
5+10 0.1394 0.43 |Q V | | | |
5+15 0.1424 0.43 |Q V | | | |
5+20 0.1456 0.47 |Q V | | | |
5+25 0.1490 0.49 |Q V | | | |
5+30 0.1524 0.50 |Q V | | | |
5+35 0.1561 0.54 | Q V | | | |
5+40 0.1600 0.56 | Q V | | | |
5+45 0.1639 0.57 | Q V | | | |
5+50 0.1678 0.57 | Q V | | | |
5+55 0.1717 0.57 | Q V | | | |
6+ 0 0.1756 0.57 | Q V | | | |
6+ 5 0.1798 0.61 | Q V | | | |
6+10 0.1842 0.64 | Q V | | | |
6+15 0.1886 0.64 | Q V | | | |
6+20 0.1930 0.64 | Q V | | | |
6+25 0.1974 0.64 | Q V | | | |
6+30 0.2018 0.64 | Q V | | | |
6+35 0.2065 0.68 | Q V | | | |
6+40 0.2114 0.71 | Q V | | | |
6+45 0.2163 0.71 | Q V | | | |
6+50 0.2211 0.71 | Q V | | | |
6+55 0.2260 0.71 | Q V | | | |
7+ 0 0.2309 0.71 | Q V | | | |
7+ 5 0.2358 0.71 | Q V | | | |
7+10 0.2407 0.71 | Q V | | | |
7+15 0.2456 0.71 | Q V | | | |
Item Number: 1.

Page 874 of 2517 ends

7+20 0.2508 0.75 | Q V | | | |
7+25 0.2561 0.78 | Q V | | | |
7+30 0.2615 0.78 | Q V | | | |
7+35 0.2672 0.82 | Q V | | | |
7+40 0.2730 0.85 | Q V | | | |
7+45 0.2789 0.85 | Q V | | | |
7+50 0.2850 0.89 | Q V | | | |
7+55 0.2914 0.92 | Q V | | | |
8+ 0 0.2977 0.92 | Q V | | | |
8+ 5 0.3046 1.01 | Q V | | | |
8+10 0.3119 1.06 | Q V | | | |
8+15 0.3193 1.06 | Q V | | | |
8+20 0.3266 1.06 | Q V | | | |
8+25 0.3339 1.06 | Q V| | | |
8+30 0.3412 1.06 | Q V| | | |
8+35 0.3489 1.11 | Q V| | | |
8+40 0.3567 1.13 | Q V| | | |
8+45 0.3645 1.14 | Q V| | | |
8+50 0.3726 1.18 | Q V | | |
8+55 0.3809 1.20 | Q V | | |
9+ 0 0.3892 1.21 | Q V | | |
9+ 5 0.3981 1.29 | Q V | | |
9+10 0.4073 1.34 | Q V | | |
9+15 0.4166 1.35 | Q |V | | |
9+20 0.4262 1.39 | Q |V | | |
9+25 0.4359 1.42 | Q |V | | |
9+30 0.4457 1.42 | Q | V | | |
9+35 0.4558 1.46 | Q | V | | |
9+40 0.4660 1.49 | Q | V | | |
9+45 0.4763 1.49 | Q | V | | |
9+50 0.4868 1.53 | Q | V | | |
9+55 0.4976 1.56 | Q | V | | |
10+ 0 0.5083 1.56 | Q | V | | |
10+ 5 0.5170 1.26 | Q | V | | |
10+10 0.5245 1.08 | Q | V | | |
10+15 0.5318 1.06 | Q | V | | |
10+20 0.5391 1.06 | Q | V | | |
10+25 0.5465 1.06 | Q | V | | |
10+30 0.5538 1.06 | Q | V | | |
10+35 0.5626 1.28 | Q | V | | |
10+40 0.5723 1.41 | Q | V | | |
10+45 0.5820 1.42 | Q | V | | |
10+50 0.5918 1.42 | Q | V | | |
10+55 0.6016 1.42 | Q | V | | |
11+ 0 0.6114 1.42 | Q | V | | |
11+ 5 0.6208 1.38 | Q | V | | |
11+10 0.6301 1.35 | Q | V | | |
11+15 0.6394 1.35 | Q | V | | |
11+20 0.6487 1.35 | Q | V | | |
11+25 0.6580 1.35 | Q | V | | |
Item Number: 1.

Page 875 of 2517 ends

11+30 0.6673 1.35 | Q | V | | |
11+35 0.6760 1.26 | Q | V | | |
11+40 0.6843 1.21 | Q | V | | |
11+45 0.6926 1.21 | Q | V | | |
11+50 0.7012 1.25 | Q | V | | |
11+55 0.7100 1.27 | Q | V| | |
12+ 0 0.7188 1.28 | Q | V| | |
12+ 5 0.7296 1.57 | Q | V| | |
12+10 0.7417 1.75 | Q | V | |
12+15 0.7539 1.77 | Q | V | |
12+20 0.7665 1.83 | Q | V | |
12+25 0.7793 1.86 | Q | |V | |
12+30 0.7922 1.87 | Q | |V | |
12+35 0.8058 1.97 | Q | |V | |
12+40 0.8198 2.04 | Q | | V | |
12+45 0.8339 2.04 | Q | | V | |
12+50 0.8483 2.10 | Q | | V | |
12+55 0.8630 2.13 | Q | | V | |
13+ 0 0.8777 2.14 | Q | | V | |
13+ 5 0.8942 2.40 | Q| | V | |
13+10 0.9118 2.56 | Q | V | |
13+15 0.9296 2.58 | Q | V | |
13+20 0.9473 2.58 | Q | V | |
13+25 0.9651 2.58 | Q | V | |
13+30 0.9829 2.58 | Q | V | |
13+35 0.9967 2.02 | Q | | V | |
13+40 1.0082 1.67 | Q | | V | |
13+45 1.0195 1.63 | Q | | V | |
13+50 1.0307 1.64 | Q | | V | |
13+55 1.0420 1.64 | Q | | V | |
14+ 0 1.0533 1.64 | Q | | V | |
14+ 5 1.0661 1.85 | Q | | V | |
14+10 1.0797 1.98 | Q | | V| |
14+15 1.0934 1.99 | Q | | V| |
14+20 1.1067 1.94 | Q | | V| |
14+25 1.1199 1.91 | Q | | V |
14+30 1.1331 1.91 | Q | | V |
14+35 1.1462 1.91 | Q | | V |
14+40 1.1594 1.91 | Q | | |V |
14+45 1.1726 1.92 | Q | | |V |
14+50 1.1855 1.87 | Q | | |V |
14+55 1.1981 1.84 | Q | | | V |
15+ 0 1.2107 1.83 | Q | | | V |
15+ 5 1.2230 1.78 | Q | | | V |
15+10 1.2351 1.75 | Q | | | V |
15+15 1.2472 1.75 | Q | | | V |
15+20 1.2589 1.70 | Q | | | V |
15+25 1.2704 1.67 | Q | | | V |
15+30 1.2819 1.67 | Q | | | V |
15+35 1.2921 1.48 | Q | | | V |
Item Number: 1.

Page 876 of 2517 ends

15+40 1.3015 1.36 | Q | | | V |
15+45 1.3107 1.35 | Q | | | V |
15+50 1.3200 1.35 | Q | | | V |
15+55 1.3293 1.35 | Q | | | V |
16+ 0 1.3386 1.35 | Q | | | V |
16+ 5 1.3435 0.71 | Q | | | V |
16+10 1.3457 0.32 |Q | | | V |
16+15 1.3477 0.28 |Q | | | V |
16+20 1.3496 0.28 |Q | | | V |
16+25 1.3516 0.28 |Q | | | V |
16+30 1.3536 0.28 |Q | | | V |
16+35 1.3552 0.24 Q | | | V |
16+40 1.3567 0.22 Q | | | V |
16+45 1.3582 0.21 Q | | | V |
16+50 1.3596 0.21 Q | | | V |
16+55 1.3611 0.21 Q | | | V |
17+ 0 1.3626 0.21 Q | | | V |
17+ 5 1.3646 0.30 |Q | | | V |
17+10 1.3670 0.35 |Q | | | V |
17+15 1.3695 0.35 |Q | | | V |
17+20 1.3719 0.35 |Q | | | V |
17+25 1.3743 0.35 |Q | | | V |
17+30 1.3768 0.35 |Q | | | V |
17+35 1.3792 0.35 |Q | | | V |
17+40 1.3817 0.35 |Q | | | V |
17+45 1.3841 0.35 |Q | | | V |
17+50 1.3863 0.31 |Q | | | V |
17+55 1.3882 0.29 |Q | | | V |
18+ 0 1.3902 0.28 |Q | | | V |
18+ 5 1.3922 0.28 |Q | | | V |
18+10 1.3941 0.28 |Q | | | V |
18+15 1.3961 0.28 |Q | | | V |
18+20 1.3980 0.28 |Q | | | V |
18+25 1.4000 0.28 |Q | | | V |
18+30 1.4019 0.28 |Q | | | V |
18+35 1.4036 0.24 Q | | | V |
18+40 1.4051 0.22 Q | | | V |
18+45 1.4065 0.21 Q | | | V |
18+50 1.4077 0.17 Q | | | V |
18+55 1.4087 0.14 Q | | | V |
19+ 0 1.4097 0.14 Q | | | V |
19+ 5 1.4110 0.18 Q | | | V |
19+10 1.4124 0.21 Q | | | V |
19+15 1.4139 0.21 Q | | | V |
19+20 1.4156 0.26 |Q | | | V |
19+25 1.4176 0.28 |Q | | | V |
19+30 1.4195 0.28 |Q | | | V |
19+35 1.4212 0.24 Q | | | V |
19+40 1.4227 0.22 Q | | | V |
19+45 1.4241 0.21 Q | | | V |
Item Number: 1.

Page 877 of 2517 ends

19+50 1.4253 0.17 Q | | | V |
19+55 1.4263 0.14 Q | | | V |
20+ 0 1.4273 0.14 Q | | | V |
20+ 5 1.4285 0.18 Q | | | V |
20+10 1.4300 0.21 Q | | | V |
20+15 1.4315 0.21 Q | | | V |
20+20 1.4329 0.21 Q | | | V |
20+25 1.4344 0.21 Q | | | V |
20+30 1.4359 0.21 Q | | | V |
20+35 1.4373 0.21 Q | | | V |
20+40 1.4388 0.21 Q | | | V |
20+45 1.4403 0.21 Q | | | V |
20+50 1.4414 0.17 Q | | | V |
20+55 1.4424 0.14 Q | | | V |
21+ 0 1.4434 0.14 Q | | | V |
21+ 5 1.4447 0.18 Q | | | V |
21+10 1.4461 0.21 Q | | | V |
21+15 1.4476 0.21 Q | | | V|
21+20 1.4488 0.17 Q | | | V|
21+25 1.4498 0.14 Q | | | V|
21+30 1.4507 0.14 Q | | | V|
21+35 1.4520 0.18 Q | | | V|
21+40 1.4535 0.21 Q | | | V|
21+45 1.4549 0.21 Q | | | V|
21+50 1.4561 0.17 Q | | | V|
21+55 1.4571 0.14 Q | | | V|
22+ 0 1.4581 0.14 Q | | | V|
22+ 5 1.4593 0.18 Q | | | V|
22+10 1.4608 0.21 Q | | | V|
22+15 1.4622 0.21 Q | | | V|
22+20 1.4634 0.17 Q | | | V|
22+25 1.4644 0.14 Q | | | V|
22+30 1.4654 0.14 Q | | | V|
22+35 1.4664 0.14 Q | | | V|
22+40 1.4673 0.14 Q | | | V|
22+45 1.4683 0.14 Q | | | V|
22+50 1.4693 0.14 Q | | | V|
22+55 1.4703 0.14 Q | | | V|
23+ 0 1.4713 0.14 Q | | | V|
23+ 5 1.4722 0.14 Q | | | V|
23+10 1.4732 0.14 Q | | | V|
23+15 1.4742 0.14 Q | | | V|
23+20 1.4752 0.14 Q | | | V|
23+25 1.4761 0.14 Q | | | V|
23+30 1.4771 0.14 Q | | | V|
23+35 1.4781 0.14 Q | | | V|
23+40 1.4791 0.14 Q | | | V|
23+45 1.4801 0.14 Q | | | V|
23+50 1.4810 0.14 Q | | | V|
23+55 1.4820 0.14 Q | | | V|
Item Number: 1.

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24+ 0 1.4830 0.14 Q | | | V|
24+ 5 1.4834 0.06 Q | | | V|
24+10 1.4834 0.01 Q | | | V|
----------------------------------------------------------------------- Item Number: 1.

Page 879 of 2517 ends

FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2018
Study date: 09/22/22
--------------------------------------------------------------------- Desert Hot Springs
Basin Routing
100 yr
1 hr
-------------------------------------------------------------------- Program License Serial Number 6481
-------------------------------------------------------------------- ********************* HYDROGRAPH INFORMATION ********************** From study/file name: 183postuh1100.rte
****************************HYDROGRAPH DATA**************************** Number of intervals = 14
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 20.225 (CFS)
Total volume = 0.519 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Process from Point/Station 201.000 to Point/Station 202.000 **** RETARDING BASIN ROUTING ****
______________________________________________________________________ User entry of depth-outflow-storage data
-------------------------------------------------------------------- Total number of inflow hydrograph intervals = 14
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
-------------------------------------------------------------------- -------------------------------------------------------------------- Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Item Number: 1.

Page 880 of 2517 ends

--------------------------------------------------------------------- -------------------------------------------------------------------- Depth vs. Storage and Depth vs. Discharge data:

Basin Depth Storage Outflow (S-O*dt/2) (S+O*dt/2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
---------------------------------------------------------------------

0.000 0.000 0.000 0.000 0.000

1.000 0.041 0.102 0.041 0.041

1.330 0.066 0.974 0.063 0.069

1.670 0.090 1.833 0.084 0.096

2.000 0.114 1.833 0.108 0.120

3.000 0.186 1.833 0.180 0.192

4.000 0.258 1.833 0.252 0.264

5.000 0.330 1.833 0.324 0.336

6.000 0.403 1.833 0.397 0.409

7.000 0.444 1.833 0.438 0.450
-------------------------------------------------------------------- Hydrograph Detention Basin Routing
--------------------------------------------------------------------- Graph values: 'I'= unit inflow; 'O'=outflow at time shown --------------------------------------------------------------------- Time Inflow Outflow Storage Depth
(Hours) (CFS) (CFS) (Ac.Ft) .0 5.1 10.11 15.17 20.23 (Ft.)

0.083 1.48 0.01 0.005 O I | | | | 0.12

0.167 2.67 0.05 0.019 O I | | | | 0.47

0.250 3.03 0.10 0.038 O I | | | | 0.93

0.333 3.21 0.66 0.057 |O I | | | | 1.21

0.417 3.46 1.24 0.074 |O I | | | | 1.44

0.500 3.88 1.78 0.088 | O I | | | | 1.65

0.583 4.45 1.83 0.105 | O I| | | | 1.87

0.667 5.52 1.83 0.126 | O I | | | 2.17

0.750 8.44 1.83 0.162 | O | I | | | 2.66

0.833 20.23 1.83 0.248 | O | | | I 3.86

0.917 13.34 1.83 0.351 | O | | I | | 5.29

1.000 4.42 1.83 0.399 | O I | | | | 5.95

1.083 1.15 1.83 0.406 |IO | | | | 6.07

1.167 0.10 1.83 0.398 I O | | | | 5.93

1.250 0.00 1.83 0.385 I O | | | | 5.76

1.333 0.00 1.83 0.373 I O | | | | 5.59

1.417 0.00 1.83 0.360 I O | | | | 5.41

1.500 0.00 1.83 0.347 I O | | | | 5.24

1.583 0.00 1.83 0.335 I O | | | | 5.07

1.667 0.00 1.83 0.322 I O | | | | 4.89

1.750 0.00 1.83 0.310 I O | | | | 4.72

1.833 0.00 1.83 0.297 I O | | | | 4.54

1.917 0.00 1.83 0.284 I O | | | | 4.37

2.000 0.00 1.83 0.272 I O | | | | 4.19

2.083 0.00 1.83 0.259 I O | | | | 4.02

2.167 0.00 1.83 0.246 I O | | | | 3.84
Item Number: 1.

Page 881 of 2517 ends

2.250 0.00 1.83 0.234 I O | | | | 3.66

2.333 0.00 1.83 0.221 I O | | | | 3.49

2.417 0.00 1.83 0.209 I O | | | | 3.31

2.500 0.00 1.83 0.196 I O | | | | 3.14

2.583 0.00 1.83 0.183 I O | | | | 2.96

2.667 0.00 1.83 0.171 I O | | | | 2.79

2.750 0.00 1.83 0.158 I O | | | | 2.61

2.833 0.00 1.83 0.145 I O | | | | 2.44

2.917 0.00 1.83 0.133 I O | | | | 2.26

3.000 0.00 1.83 0.120 I O | | | | 2.09

3.083 0.00 1.83 0.108 I O | | | | 1.91

3.167 0.00 1.83 0.095 I O | | | | 1.74

3.250 0.00 1.59 0.083 I O | | | | 1.57

3.333 0.00 1.24 0.073 IO | | | | 1.44

3.417 0.00 0.97 0.066 IO | | | | 1.33

3.500 0.00 0.76 0.060 IO | | | | 1.25

3.583 0.00 0.60 0.055 O | | | | 1.19

3.667 0.00 0.47 0.052 O | | | | 1.14

3.750 0.00 0.37 0.049 O | | | | 1.10

3.833 0.00 0.29 0.046 O | | | | 1.07

3.917 0.00 0.23 0.045 O | | | | 1.05

4.000 0.00 0.18 0.043 O | | | | 1.03

4.083 0.00 0.14 0.042 O | | | | 1.01

4.167 0.00 0.11 0.041 O | | | | 1.00

4.250 0.00 0.10 0.041 O | | | | 0.99

4.333 0.00 0.10 0.040 O | | | | 0.97

4.417 0.00 0.10 0.039 O | | | | 0.95

4.500 0.00 0.10 0.038 O | | | | 0.94

4.583 0.00 0.09 0.038 O | | | | 0.92

4.667 0.00 0.09 0.037 O | | | | 0.91

4.750 0.00 0.09 0.037 O | | | | 0.89

4.833 0.00 0.09 0.036 O | | | | 0.88

4.917 0.00 0.09 0.035 O | | | | 0.86

5.000 0.00 0.09 0.035 O | | | | 0.85

5.083 0.00 0.08 0.034 O | | | | 0.83

5.167 0.00 0.08 0.034 O | | | | 0.82

5.250 0.00 0.08 0.033 O | | | | 0.80

5.333 0.00 0.08 0.032 O | | | | 0.79

5.417 0.00 0.08 0.032 O | | | | 0.78

5.500 0.00 0.08 0.031 O | | | | 0.76

5.583 0.00 0.08 0.031 O | | | | 0.75

5.667 0.00 0.08 0.030 O | | | | 0.74

5.750 0.00 0.07 0.030 O | | | | 0.73

5.833 0.00 0.07 0.029 O | | | | 0.71

5.917 0.00 0.07 0.029 O | | | | 0.70

6.000 0.00 0.07 0.028 O | | | | 0.69

6.083 0.00 0.07 0.028 O | | | | 0.68

6.167 0.00 0.07 0.027 O | | | | 0.67

6.250 0.00 0.07 0.027 O | | | | 0.65

6.333 0.00 0.07 0.026 O | | | | 0.64
Item Number: 1.

Page 882 of 2517 ends

6.417 0.00 0.06 0.026 O | | | | 0.63

6.500 0.00 0.06 0.026 O | | | | 0.62

6.583 0.00 0.06 0.025 O | | | | 0.61

6.667 0.00 0.06 0.025 O | | | | 0.60

6.750 0.00 0.06 0.024 O | | | | 0.59

6.833 0.00 0.06 0.024 O | | | | 0.58

6.917 0.00 0.06 0.023 O | | | | 0.57

7.000 0.00 0.06 0.023 O | | | | 0.56

7.083 0.00 0.06 0.023 O | | | | 0.55

7.167 0.00 0.06 0.022 O | | | | 0.54

7.250 0.00 0.05 0.022 O | | | | 0.53

7.333 0.00 0.05 0.021 O | | | | 0.52

7.417 0.00 0.05 0.021 O | | | | 0.52

7.500 0.00 0.05 0.021 O | | | | 0.51

7.583 0.00 0.05 0.020 O | | | | 0.50

7.667 0.00 0.05 0.020 O | | | | 0.49

7.750 0.00 0.05 0.020 O | | | | 0.48

7.833 0.00 0.05 0.019 O | | | | 0.47

7.917 0.00 0.05 0.019 O | | | | 0.46

8.000 0.00 0.05 0.019 O | | | | 0.46

8.083 0.00 0.05 0.018 O | | | | 0.45

8.167 0.00 0.05 0.018 O | | | | 0.44

8.250 0.00 0.04 0.018 O | | | | 0.43

8.333 0.00 0.04 0.017 O | | | | 0.43

8.417 0.00 0.04 0.017 O | | | | 0.42

8.500 0.00 0.04 0.017 O | | | | 0.41

8.583 0.00 0.04 0.017 O | | | | 0.41

8.667 0.00 0.04 0.016 O | | | | 0.40

8.750 0.00 0.04 0.016 O | | | | 0.39

8.833 0.00 0.04 0.016 O | | | | 0.39

8.917 0.00 0.04 0.016 O | | | | 0.38

9.000 0.00 0.04 0.015 O | | | | 0.37

9.083 0.00 0.04 0.015 O | | | | 0.37

9.167 0.00 0.04 0.015 O | | | | 0.36

9.250 0.00 0.04 0.014 O | | | | 0.35

9.333 0.00 0.04 0.014 O | | | | 0.35

9.417 0.00 0.03 0.014 O | | | | 0.34

9.500 0.00 0.03 0.014 O | | | | 0.34

9.583 0.00 0.03 0.014 O | | | | 0.33

9.667 0.00 0.03 0.013 O | | | | 0.32

9.750 0.00 0.03 0.013 O | | | | 0.32

9.833 0.00 0.03 0.013 O | | | | 0.31

9.917 0.00 0.03 0.013 O | | | | 0.31

10.000 0.00 0.03 0.012 O | | | | 0.30

10.083 0.00 0.03 0.012 O | | | | 0.30

10.167 0.00 0.03 0.012 O | | | | 0.29

10.250 0.00 0.03 0.012 O | | | | 0.29

10.333 0.00 0.03 0.012 O | | | | 0.28

10.417 0.00 0.03 0.011 O | | | | 0.28

10.500 0.00 0.03 0.011 O | | | | 0.27
Item Number: 1.

Page 883 of 2517 ends

10.583 0.00 0.03 0.011 O | | | | 0.27

10.667 0.00 0.03 0.011 O | | | | 0.26

10.750 0.00 0.03 0.011 O | | | | 0.26

10.833 0.00 0.03 0.010 O | | | | 0.26

10.917 0.00 0.03 0.010 O | | | | 0.25

11.000 0.00 0.03 0.010 O | | | | 0.25

11.083 0.00 0.02 0.010 O | | | | 0.24

11.167 0.00 0.02 0.010 O | | | | 0.24

11.250 0.00 0.02 0.010 O | | | | 0.23

11.333 0.00 0.02 0.009 O | | | | 0.23

11.417 0.00 0.02 0.009 O | | | | 0.23

11.500 0.00 0.02 0.009 O | | | | 0.22

11.583 0.00 0.02 0.009 O | | | | 0.22

11.667 0.00 0.02 0.009 O | | | | 0.22

11.750 0.00 0.02 0.009 O | | | | 0.21

11.833 0.00 0.02 0.009 O | | | | 0.21

11.917 0.00 0.02 0.008 O | | | | 0.20

12.000 0.00 0.02 0.008 O | | | | 0.20

12.083 0.00 0.02 0.008 O | | | | 0.20

12.167 0.00 0.02 0.008 O | | | | 0.19

12.250 0.00 0.02 0.008 O | | | | 0.19

12.333 0.00 0.02 0.008 O | | | | 0.19

12.417 0.00 0.02 0.008 O | | | | 0.18

12.500 0.00 0.02 0.007 O | | | | 0.18

12.583 0.00 0.02 0.007 O | | | | 0.18

12.667 0.00 0.02 0.007 O | | | | 0.18

12.750 0.00 0.02 0.007 O | | | | 0.17

12.833 0.00 0.02 0.007 O | | | | 0.17

12.917 0.00 0.02 0.007 O | | | | 0.17

13.000 0.00 0.02 0.007 O | | | | 0.16

13.083 0.00 0.02 0.007 O | | | | 0.16

13.167 0.00 0.02 0.006 O | | | | 0.16

13.250 0.00 0.02 0.006 O | | | | 0.16

13.333 0.00 0.02 0.006 O | | | | 0.15

13.417 0.00 0.02 0.006 O | | | | 0.15

13.500 0.00 0.02 0.006 O | | | | 0.15

13.583 0.00 0.01 0.006 O | | | | 0.15

13.667 0.00 0.01 0.006 O | | | | 0.14

13.750 0.00 0.01 0.006 O | | | | 0.14

13.833 0.00 0.01 0.006 O | | | | 0.14

13.917 0.00 0.01 0.006 O | | | | 0.14

14.000 0.00 0.01 0.005 O | | | | 0.13

14.083 0.00 0.01 0.005 O | | | | 0.13

14.167 0.00 0.01 0.005 O | | | | 0.13

14.250 0.00 0.01 0.005 O | | | | 0.13

14.333 0.00 0.01 0.005 O | | | | 0.12

14.417 0.00 0.01 0.005 O | | | | 0.12

14.500 0.00 0.01 0.005 O | | | | 0.12

14.583 0.00 0.01 0.005 O | | | | 0.12

14.667 0.00 0.01 0.005 O | | | | 0.12
Item Number: 1.

Page 884 of 2517 ends

14.750 0.00 0.01 0.005 O | | | | 0.11

14.833 0.00 0.01 0.005 O | | | | 0.11

14.917 0.00 0.01 0.005 O | | | | 0.11

15.000 0.00 0.01 0.004 O | | | | 0.11

15.083 0.00 0.01 0.004 O | | | | 0.11

15.167 0.00 0.01 0.004 O | | | | 0.10

15.250 0.00 0.01 0.004 O | | | | 0.10

15.333 0.00 0.01 0.004 O | | | | 0.10

15.417 0.00 0.01 0.004 O | | | | 0.10

15.500 0.00 0.01 0.004 O | | | | 0.10

15.583 0.00 0.01 0.004 O | | | | 0.10

15.667 0.00 0.01 0.004 O | | | | 0.09

15.750 0.00 0.01 0.004 O | | | | 0.09

15.833 0.00 0.01 0.004 O | | | | 0.09

15.917 0.00 0.01 0.004 O | | | | 0.09

16.000 0.00 0.01 0.004 O | | | | 0.09

16.083 0.00 0.01 0.004 O | | | | 0.09

16.167 0.00 0.01 0.003 O | | | | 0.09

16.250 0.00 0.01 0.003 O | | | | 0.08

16.333 0.00 0.01 0.003 O | | | | 0.08

16.417 0.00 0.01 0.003 O | | | | 0.08

16.500 0.00 0.01 0.003 O | | | | 0.08

16.583 0.00 0.01 0.003 O | | | | 0.08

16.667 0.00 0.01 0.003 O | | | | 0.08

16.750 0.00 0.01 0.003 O | | | | 0.08

16.833 0.00 0.01 0.003 O | | | | 0.07

16.917 0.00 0.01 0.003 O | | | | 0.07

17.000 0.00 0.01 0.003 O | | | | 0.07

17.083 0.00 0.01 0.003 O | | | | 0.07

17.167 0.00 0.01 0.003 O | | | | 0.07

17.250 0.00 0.01 0.003 O | | | | 0.07

17.333 0.00 0.01 0.003 O | | | | 0.07

17.417 0.00 0.01 0.003 O | | | | 0.07

17.500 0.00 0.01 0.003 O | | | | 0.06

17.583 0.00 0.01 0.003 O | | | | 0.06

17.667 0.00 0.01 0.003 O | | | | 0.06

17.750 0.00 0.01 0.003 O | | | | 0.06

17.833 0.00 0.01 0.002 O | | | | 0.06

17.917 0.00 0.01 0.002 O | | | | 0.06

18.000 0.00 0.01 0.002 O | | | | 0.06

18.083 0.00 0.01 0.002 O | | | | 0.06

18.167 0.00 0.01 0.002 O | | | | 0.06

18.250 0.00 0.01 0.002 O | | | | 0.06

18.333 0.00 0.01 0.002 O | | | | 0.05

18.417 0.00 0.01 0.002 O | | | | 0.05

18.500 0.00 0.01 0.002 O | | | | 0.05

18.583 0.00 0.01 0.002 O | | | | 0.05

18.667 0.00 0.01 0.002 O | | | | 0.05

18.750 0.00 0.01 0.002 O | | | | 0.05

18.833 0.00 0.01 0.002 O | | | | 0.05
Item Number: 1.

Page 885 of 2517 ends

18.917 0.00 0.00 0.002 O | | | | 0.05

19.000 0.00 0.00 0.002 O | | | | 0.05

19.083 0.00 0.00 0.002 O | | | | 0.05

19.167 0.00 0.00 0.002 O | | | | 0.05

19.250 0.00 0.00 0.002 O | | | | 0.05

19.333 0.00 0.00 0.002 O | | | | 0.04

19.417 0.00 0.00 0.002 O | | | | 0.04

19.500 0.00 0.00 0.002 O | | | | 0.04

19.583 0.00 0.00 0.002 O | | | | 0.04

19.667 0.00 0.00 0.002 O | | | | 0.04

19.750 0.00 0.00 0.002 O | | | | 0.04

19.833 0.00 0.00 0.002 O | | | | 0.04

19.917 0.00 0.00 0.002 O | | | | 0.04

20.000 0.00 0.00 0.002 O | | | | 0.04

20.083 0.00 0.00 0.002 O | | | | 0.04

20.167 0.00 0.00 0.002 O | | | | 0.04

20.250 0.00 0.00 0.002 O | | | | 0.04

20.333 0.00 0.00 0.001 O | | | | 0.04

20.417 0.00 0.00 0.001 O | | | | 0.04

20.500 0.00 0.00 0.001 O | | | | 0.03

20.583 0.00 0.00 0.001 O | | | | 0.03

20.667 0.00 0.00 0.001 O | | | | 0.03

20.750 0.00 0.00 0.001 O | | | | 0.03

20.833 0.00 0.00 0.001 O | | | | 0.03

20.917 0.00 0.00 0.001 O | | | | 0.03

21.000 0.00 0.00 0.001 O | | | | 0.03

21.083 0.00 0.00 0.001 O | | | | 0.03

21.167 0.00 0.00 0.001 O | | | | 0.03

21.250 0.00 0.00 0.001 O | | | | 0.03

21.333 0.00 0.00 0.001 O | | | | 0.03

21.417 0.00 0.00 0.001 O | | | | 0.03

21.500 0.00 0.00 0.001 O | | | | 0.03

21.583 0.00 0.00 0.001 O | | | | 0.03

21.667 0.00 0.00 0.001 O | | | | 0.03

21.750 0.00 0.00 0.001 O | | | | 0.03

21.833 0.00 0.00 0.001 O | | | | 0.03

21.917 0.00 0.00 0.001 O | | | | 0.03

22.000 0.00 0.00 0.001 O | | | | 0.03

22.083 0.00 0.00 0.001 O | | | | 0.03

22.167 0.00 0.00 0.001 O | | | | 0.02

22.250 0.00 0.00 0.001 O | | | | 0.02

22.333 0.00 0.00 0.001 O | | | | 0.02

22.417 0.00 0.00 0.001 O | | | | 0.02

22.500 0.00 0.00 0.001 O | | | | 0.02

22.583 0.00 0.00 0.001 O | | | | 0.02

22.667 0.00 0.00 0.001 O | | | | 0.02

22.750 0.00 0.00 0.001 O | | | | 0.02

22.833 0.00 0.00 0.001 O | | | | 0.02

22.917 0.00 0.00 0.001 O | | | | 0.02

23.000 0.00 0.00 0.001 O | | | | 0.02
Item Number: 1.

Page 886 of 2517 ends

23.083 0.00 0.00 0.001 O | | | | 0.02

23.167 0.00 0.00 0.001 O | | | | 0.02

23.250 0.00 0.00 0.001 O | | | | 0.02

23.333 0.00 0.00 0.001 O | | | | 0.02

23.417 0.00 0.00 0.001 O | | | | 0.02

23.500 0.00 0.00 0.001 O | | | | 0.02

23.583 0.00 0.00 0.001 O | | | | 0.02

23.667 0.00 0.00 0.001 O | | | | 0.02

23.750 0.00 0.00 0.001 O | | | | 0.02

23.833 0.00 0.00 0.001 O | | | | 0.02

23.917 0.00 0.00 0.001 O | | | | 0.02

24.000 0.00 0.00 0.001 O | | | | 0.02

24.083 0.00 0.00 0.001 O | | | | 0.02

24.167 0.00 0.00 0.001 O | | | | 0.02

24.250 0.00 0.00 0.001 O | | | | 0.02

24.333 0.00 0.00 0.001 O | | | | 0.02

24.417 0.00 0.00 0.001 O | | | | 0.02

24.500 0.00 0.00 0.001 O | | | | 0.02

24.583 0.00 0.00 0.001 O | | | | 0.02

24.667 0.00 0.00 0.001 O | | | | 0.01

24.750 0.00 0.00 0.001 O | | | | 0.01

24.833 0.00 0.00 0.001 O | | | | 0.01

24.917 0.00 0.00 0.001 O | | | | 0.01

25.000 0.00 0.00 0.001 O | | | | 0.01

25.083 0.00 0.00 0.001 O | | | | 0.01

25.167 0.00 0.00 0.001 O | | | | 0.01

25.250 0.00 0.00 0.001 O | | | | 0.01

25.333 0.00 0.00 0.001 O | | | | 0.01

25.417 0.00 0.00 0.001 O | | | | 0.01

25.500 0.00 0.00 0.001 O | | | | 0.01

25.583 0.00 0.00 0.001 O | | | | 0.01

25.667 0.00 0.00 0.000 O | | | | 0.01

25.750 0.00 0.00 0.000 O | | | | 0.01

25.833 0.00 0.00 0.000 O | | | | 0.01

25.917 0.00 0.00 0.000 O | | | | 0.01

26.000 0.00 0.00 0.000 O | | | | 0.01

26.083 0.00 0.00 0.000 O | | | | 0.01

26.167 0.00 0.00 0.000 O | | | | 0.01

26.250 0.00 0.00 0.000 O | | | | 0.01

26.333 0.00 0.00 0.000 O | | | | 0.01

26.417 0.00 0.00 0.000 O | | | | 0.01

26.500 0.00 0.00 0.000 O | | | | 0.01

26.583 0.00 0.00 0.000 O | | | | 0.01

26.667 0.00 0.00 0.000 O | | | | 0.01

26.750 0.00 0.00 0.000 O | | | | 0.01
****************************HYDROGRAPH DATA**************************** Number of intervals = 321
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 1.833 (CFS)
Item Number: 1.

Page 887 of 2517 ends

Total volume = 0.519 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** -------------------------------------------------------------------- Item Number: 1.

Page 888 of 2517 ends

FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2018
Study date: 09/22/22
--------------------------------------------------------------------- Desert Hot Springs
Basin Routing
100 yr
3 hr
-------------------------------------------------------------------- Program License Serial Number 6481
-------------------------------------------------------------------- ********************* HYDROGRAPH INFORMATION ********************** From study/file name: 183postuh3100.rte
****************************HYDROGRAPH DATA**************************** Number of intervals = 38
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 8.991 (CFS)
Total volume = 0.734 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Process from Point/Station 201.000 to Point/Station 202.000 **** RETARDING BASIN ROUTING ****
______________________________________________________________________ User entry of depth-outflow-storage data
-------------------------------------------------------------------- Total number of inflow hydrograph intervals = 38
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
-------------------------------------------------------------------- -------------------------------------------------------------------- Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Item Number: 1.

Page 889 of 2517 ends

--------------------------------------------------------------------- -------------------------------------------------------------------- Depth vs. Storage and Depth vs. Discharge data:

Basin Depth Storage Outflow (S-O*dt/2) (S+O*dt/2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
---------------------------------------------------------------------

0.000 0.000 0.000 0.000 0.000

1.000 0.041 0.102 0.041 0.041

1.330 0.066 0.974 0.063 0.069

1.670 0.090 1.833 0.084 0.096

2.000 0.114 1.833 0.108 0.120

3.000 0.186 1.833 0.180 0.192

4.000 0.258 1.833 0.252 0.264

5.000 0.330 1.833 0.324 0.336

6.000 0.403 1.833 0.397 0.409

0.083 0.77 0.01 0.003 O I | | | | 0.06

0.167 1.23 0.02 0.009 O I | | | | 0.23

0.250 1.17 0.04 0.017 O I | | | | 0.43

0.333 1.33 0.06 0.026 O I | | | | 0.63

0.417 1.47 0.09 0.035 O I | | | | 0.85

0.500 1.66 0.22 0.044 O I | | | | 1.05

0.583 1.59 0.52 0.053 |O I | | | | 1.16

0.667 1.67 0.76 0.060 | O I | | | | 1.25

0.750 1.77 0.97 0.066 | O I | | | | 1.33

0.833 1.60 1.12 0.070 | O I | | | | 1.39

0.917 1.55 1.22 0.073 | OI | | | | 1.43

1.000 1.69 1.31 0.075 | O I | | | | 1.46

1.083 2.04 1.43 0.079 | O I| | | | 1.51

1.167 2.21 1.58 0.083 | O I| | | | 1.57

1.250 2.23 1.72 0.087 | OI| | | | 1.63

1.333 2.08 1.82 0.090 | OI| | | | 1.66

1.417 2.43 1.83 0.093 | O I | | | 1.71

1.500 2.75 1.83 0.098 | O |I | | | 1.78

1.583 2.61 1.83 0.104 | O |I | | | 1.86

1.667 2.70 1.83 0.109 | O |I | | | 1.94

1.750 3.25 1.83 0.117 | O | I | | | 2.04

1.833 3.38 1.83 0.127 | O | I | | | 2.19

1.917 3.18 1.83 0.137 | O | I | | | 2.32

2.000 3.15 1.83 0.146 | O | I | | | 2.45

2.083 3.26 1.83 0.156 | O | I | | | 2.58

2.167 4.10 1.83 0.169 | O | I | | | 2.76
Item Number: 1.

Page 890 of 2517 ends

2.250 5.16 1.83 0.188 | O | | I | | 3.03

2.333 4.49 1.83 0.208 | O | I| | | 3.31

2.417 6.23 1.83 0.233 | O | | I | | 3.65

2.500 7.97 1.83 0.269 | O | | | I | 4.15

2.583 8.99 1.83 0.315 | O | | | I 4.79

2.667 7.76 1.83 0.360 | O | | | I | 5.41

2.750 3.99 1.83 0.388 | O | I | | | 5.79

2.833 2.04 1.83 0.396 | OI| | | | 5.90

2.917 1.78 1.83 0.396 | O | | | | 5.91

3.000 1.07 1.83 0.394 | I O | | | | 5.87

3.083 0.28 1.83 0.386 |I O | | | | 5.76

3.167 0.02 1.83 0.374 I O | | | | 5.60

3.250 0.00 1.83 0.362 I O | | | | 5.43

3.333 0.00 1.83 0.349 I O | | | | 5.26

3.417 0.00 1.83 0.336 I O | | | | 5.09

3.500 0.00 1.83 0.324 I O | | | | 4.91

3.583 0.00 1.83 0.311 I O | | | | 4.74

3.667 0.00 1.83 0.298 I O | | | | 4.56

3.750 0.00 1.83 0.286 I O | | | | 4.39

3.833 0.00 1.83 0.273 I O | | | | 4.21

3.917 0.00 1.83 0.261 I O | | | | 4.04

4.000 0.00 1.83 0.248 I O | | | | 3.86

4.083 0.00 1.83 0.235 I O | | | | 3.68

4.167 0.00 1.83 0.223 I O | | | | 3.51

4.250 0.00 1.83 0.210 I O | | | | 3.33

4.333 0.00 1.83 0.197 I O | | | | 3.16

4.417 0.00 1.83 0.185 I O | | | | 2.98

4.500 0.00 1.83 0.172 I O | | | | 2.81

4.583 0.00 1.83 0.160 I O | | | | 2.63

4.667 0.00 1.83 0.147 I O | | | | 2.46

4.750 0.00 1.83 0.134 I O | | | | 2.28

4.833 0.00 1.83 0.122 I O | | | | 2.11

4.917 0.00 1.83 0.109 I O | | | | 1.93

5.000 0.00 1.83 0.096 I O | | | | 1.76

5.083 0.00 1.64 0.084 I O | | | | 1.59

5.167 0.00 1.28 0.074 I O | | | | 1.45

5.250 0.00 1.00 0.067 I O | | | | 1.34

5.333 0.00 0.78 0.060 I O | | | | 1.26

5.417 0.00 0.61 0.056 I O | | | | 1.19

5.500 0.00 0.48 0.052 IO | | | | 1.14

5.583 0.00 0.38 0.049 IO | | | | 1.10

5.667 0.00 0.30 0.047 IO | | | | 1.07

5.750 0.00 0.23 0.045 O | | | | 1.05

5.833 0.00 0.18 0.043 O | | | | 1.03

5.917 0.00 0.14 0.042 O | | | | 1.02

6.000 0.00 0.11 0.041 O | | | | 1.00

6.083 0.00 0.10 0.041 O | | | | 0.99

6.167 0.00 0.10 0.040 O | | | | 0.97

6.250 0.00 0.10 0.039 O | | | | 0.96

6.333 0.00 0.10 0.039 O | | | | 0.94
Item Number: 1.

Page 891 of 2517 ends

6.417 0.00 0.09 0.038 O | | | | 0.92

6.500 0.00 0.09 0.037 O | | | | 0.91

6.583 0.00 0.09 0.037 O | | | | 0.89

6.667 0.00 0.09 0.036 O | | | | 0.88

6.750 0.00 0.09 0.035 O | | | | 0.86

6.833 0.00 0.09 0.035 O | | | | 0.85

6.917 0.00 0.09 0.034 O | | | | 0.83

7.000 0.00 0.08 0.034 O | | | | 0.82

7.083 0.00 0.08 0.033 O | | | | 0.81

7.167 0.00 0.08 0.032 O | | | | 0.79

7.250 0.00 0.08 0.032 O | | | | 0.78

7.333 0.00 0.08 0.031 O | | | | 0.77

7.417 0.00 0.08 0.031 O | | | | 0.75

7.500 0.00 0.08 0.030 O | | | | 0.74

7.583 0.00 0.07 0.030 O | | | | 0.73

7.667 0.00 0.07 0.029 O | | | | 0.71

7.750 0.00 0.07 0.029 O | | | | 0.70

7.833 0.00 0.07 0.028 O | | | | 0.69

7.917 0.00 0.07 0.028 O | | | | 0.68

8.000 0.00 0.07 0.027 O | | | | 0.67

8.083 0.00 0.07 0.027 O | | | | 0.66

8.167 0.00 0.07 0.026 O | | | | 0.65

8.250 0.00 0.06 0.026 O | | | | 0.63

8.333 0.00 0.06 0.026 O | | | | 0.62

8.417 0.00 0.06 0.025 O | | | | 0.61

8.500 0.00 0.06 0.025 O | | | | 0.60

8.583 0.00 0.06 0.024 O | | | | 0.59

8.667 0.00 0.06 0.024 O | | | | 0.58

8.750 0.00 0.06 0.023 O | | | | 0.57

8.833 0.00 0.06 0.023 O | | | | 0.56

8.917 0.00 0.06 0.023 O | | | | 0.55

9.000 0.00 0.06 0.022 O | | | | 0.54

9.083 0.00 0.05 0.022 O | | | | 0.53

9.167 0.00 0.05 0.022 O | | | | 0.53

9.250 0.00 0.05 0.021 O | | | | 0.52

9.333 0.00 0.05 0.021 O | | | | 0.51

9.417 0.00 0.05 0.020 O | | | | 0.50

9.500 0.00 0.05 0.020 O | | | | 0.49

9.583 0.00 0.05 0.020 O | | | | 0.48

9.667 0.00 0.05 0.019 O | | | | 0.47

9.750 0.00 0.05 0.019 O | | | | 0.47

9.833 0.00 0.05 0.019 O | | | | 0.46

9.917 0.00 0.05 0.018 O | | | | 0.45

10.000 0.00 0.05 0.018 O | | | | 0.44

10.083 0.00 0.04 0.018 O | | | | 0.43

10.167 0.00 0.04 0.018 O | | | | 0.43

10.250 0.00 0.04 0.017 O | | | | 0.42

10.333 0.00 0.04 0.017 O | | | | 0.41

10.417 0.00 0.04 0.017 O | | | | 0.41

10.500 0.00 0.04 0.016 O | | | | 0.40
Item Number: 1.

Page 892 of 2517 ends

10.583 0.00 0.04 0.016 O | | | | 0.39

10.667 0.00 0.04 0.016 O | | | | 0.39

10.750 0.00 0.04 0.016 O | | | | 0.38

10.833 0.00 0.04 0.015 O | | | | 0.37

10.917 0.00 0.04 0.015 O | | | | 0.37

11.000 0.00 0.04 0.015 O | | | | 0.36

11.083 0.00 0.04 0.015 O | | | | 0.35

11.167 0.00 0.04 0.014 O | | | | 0.35

11.250 0.00 0.03 0.014 O | | | | 0.34

11.333 0.00 0.03 0.014 O | | | | 0.34

11.417 0.00 0.03 0.014 O | | | | 0.33

11.500 0.00 0.03 0.013 O | | | | 0.33

11.583 0.00 0.03 0.013 O | | | | 0.32

11.667 0.00 0.03 0.013 O | | | | 0.31

11.750 0.00 0.03 0.013 O | | | | 0.31

11.833 0.00 0.03 0.012 O | | | | 0.30

11.917 0.00 0.03 0.012 O | | | | 0.30

12.000 0.00 0.03 0.012 O | | | | 0.29

12.083 0.00 0.03 0.012 O | | | | 0.29

12.167 0.00 0.03 0.012 O | | | | 0.28

12.250 0.00 0.03 0.011 O | | | | 0.28

12.333 0.00 0.03 0.011 O | | | | 0.27

12.417 0.00 0.03 0.011 O | | | | 0.27

12.500 0.00 0.03 0.011 O | | | | 0.26

12.583 0.00 0.03 0.011 O | | | | 0.26

12.667 0.00 0.03 0.010 O | | | | 0.26

12.750 0.00 0.03 0.010 O | | | | 0.25

12.833 0.00 0.03 0.010 O | | | | 0.25

12.917 0.00 0.02 0.010 O | | | | 0.24

13.000 0.00 0.02 0.010 O | | | | 0.24

13.083 0.00 0.02 0.010 O | | | | 0.23

13.167 0.00 0.02 0.009 O | | | | 0.23

13.250 0.00 0.02 0.009 O | | | | 0.23

13.333 0.00 0.02 0.009 O | | | | 0.22

13.417 0.00 0.02 0.009 O | | | | 0.22

13.500 0.00 0.02 0.009 O | | | | 0.22

13.583 0.00 0.02 0.009 O | | | | 0.21

13.667 0.00 0.02 0.009 O | | | | 0.21

13.750 0.00 0.02 0.008 O | | | | 0.20

13.833 0.00 0.02 0.008 O | | | | 0.20

13.917 0.00 0.02 0.008 O | | | | 0.20

14.000 0.00 0.02 0.008 O | | | | 0.19

14.083 0.00 0.02 0.008 O | | | | 0.19

14.167 0.00 0.02 0.008 O | | | | 0.19

14.250 0.00 0.02 0.008 O | | | | 0.18

14.333 0.00 0.02 0.007 O | | | | 0.18

14.417 0.00 0.02 0.007 O | | | | 0.18

14.500 0.00 0.02 0.007 O | | | | 0.18

14.583 0.00 0.02 0.007 O | | | | 0.17

14.667 0.00 0.02 0.007 O | | | | 0.17
Item Number: 1.

Page 893 of 2517 ends

14.750 0.00 0.02 0.007 O | | | | 0.17

14.833 0.00 0.02 0.007 O | | | | 0.16

14.917 0.00 0.02 0.007 O | | | | 0.16

15.000 0.00 0.02 0.006 O | | | | 0.16

15.083 0.00 0.02 0.006 O | | | | 0.16

15.167 0.00 0.02 0.006 O | | | | 0.15

15.250 0.00 0.02 0.006 O | | | | 0.15

15.333 0.00 0.02 0.006 O | | | | 0.15

15.417 0.00 0.01 0.006 O | | | | 0.15

15.500 0.00 0.01 0.006 O | | | | 0.14

15.583 0.00 0.01 0.006 O | | | | 0.14

15.667 0.00 0.01 0.006 O | | | | 0.14

15.750 0.00 0.01 0.006 O | | | | 0.14

15.833 0.00 0.01 0.005 O | | | | 0.13

15.917 0.00 0.01 0.005 O | | | | 0.13

16.000 0.00 0.01 0.005 O | | | | 0.13

16.083 0.00 0.01 0.005 O | | | | 0.13

16.167 0.00 0.01 0.005 O | | | | 0.12

16.250 0.00 0.01 0.005 O | | | | 0.12

16.333 0.00 0.01 0.005 O | | | | 0.12

16.417 0.00 0.01 0.005 O | | | | 0.12

16.500 0.00 0.01 0.005 O | | | | 0.12

16.583 0.00 0.01 0.005 O | | | | 0.11

16.667 0.00 0.01 0.005 O | | | | 0.11

16.750 0.00 0.01 0.005 O | | | | 0.11

16.833 0.00 0.01 0.004 O | | | | 0.11

16.917 0.00 0.01 0.004 O | | | | 0.11

17.000 0.00 0.01 0.004 O | | | | 0.10

17.083 0.00 0.01 0.004 O | | | | 0.10

17.167 0.00 0.01 0.004 O | | | | 0.10

17.250 0.00 0.01 0.004 O | | | | 0.10

17.333 0.00 0.01 0.004 O | | | | 0.10

17.417 0.00 0.01 0.004 O | | | | 0.10

17.500 0.00 0.01 0.004 O | | | | 0.09

17.583 0.00 0.01 0.004 O | | | | 0.09

17.667 0.00 0.01 0.004 O | | | | 0.09

17.750 0.00 0.01 0.004 O | | | | 0.09

17.833 0.00 0.01 0.004 O | | | | 0.09

17.917 0.00 0.01 0.004 O | | | | 0.09

18.000 0.00 0.01 0.004 O | | | | 0.09

18.083 0.00 0.01 0.003 O | | | | 0.08

18.167 0.00 0.01 0.003 O | | | | 0.08

18.250 0.00 0.01 0.003 O | | | | 0.08

18.333 0.00 0.01 0.003 O | | | | 0.08

18.417 0.00 0.01 0.003 O | | | | 0.08

18.500 0.00 0.01 0.003 O | | | | 0.08

18.583 0.00 0.01 0.003 O | | | | 0.08

18.667 0.00 0.01 0.003 O | | | | 0.07

18.750 0.00 0.01 0.003 O | | | | 0.07

18.833 0.00 0.01 0.003 O | | | | 0.07
Item Number: 1.

Page 894 of 2517 ends

18.917 0.00 0.01 0.003 O | | | | 0.07

19.000 0.00 0.01 0.003 O | | | | 0.07

19.083 0.00 0.01 0.003 O | | | | 0.07

19.167 0.00 0.01 0.003 O | | | | 0.07

19.250 0.00 0.01 0.003 O | | | | 0.07

19.333 0.00 0.01 0.003 O | | | | 0.06

19.417 0.00 0.01 0.003 O | | | | 0.06

19.500 0.00 0.01 0.003 O | | | | 0.06

19.583 0.00 0.01 0.003 O | | | | 0.06

19.667 0.00 0.01 0.002 O | | | | 0.06

19.750 0.00 0.01 0.002 O | | | | 0.06

19.833 0.00 0.01 0.002 O | | | | 0.06

19.917 0.00 0.01 0.002 O | | | | 0.06

20.000 0.00 0.01 0.002 O | | | | 0.06

20.083 0.00 0.01 0.002 O | | | | 0.06

20.167 0.00 0.01 0.002 O | | | | 0.05

20.250 0.00 0.01 0.002 O | | | | 0.05

20.333 0.00 0.01 0.002 O | | | | 0.05

20.417 0.00 0.01 0.002 O | | | | 0.05

20.500 0.00 0.01 0.002 O | | | | 0.05

20.583 0.00 0.01 0.002 O | | | | 0.05

20.667 0.00 0.01 0.002 O | | | | 0.05

20.750 0.00 0.00 0.002 O | | | | 0.05

20.833 0.00 0.00 0.002 O | | | | 0.05

20.917 0.00 0.00 0.002 O | | | | 0.05

21.000 0.00 0.00 0.002 O | | | | 0.05

21.083 0.00 0.00 0.002 O | | | | 0.05

21.167 0.00 0.00 0.002 O | | | | 0.04

21.250 0.00 0.00 0.002 O | | | | 0.04

21.333 0.00 0.00 0.002 O | | | | 0.04

21.417 0.00 0.00 0.002 O | | | | 0.04

21.500 0.00 0.00 0.002 O | | | | 0.04

21.583 0.00 0.00 0.002 O | | | | 0.04

21.667 0.00 0.00 0.002 O | | | | 0.04

21.750 0.00 0.00 0.002 O | | | | 0.04

21.833 0.00 0.00 0.002 O | | | | 0.04

21.917 0.00 0.00 0.002 O | | | | 0.04

22.000 0.00 0.00 0.002 O | | | | 0.04

22.083 0.00 0.00 0.002 O | | | | 0.04

22.167 0.00 0.00 0.001 O | | | | 0.04

22.250 0.00 0.00 0.001 O | | | | 0.04

22.333 0.00 0.00 0.001 O | | | | 0.04

22.417 0.00 0.00 0.001 O | | | | 0.03

22.500 0.00 0.00 0.001 O | | | | 0.03

22.583 0.00 0.00 0.001 O | | | | 0.03

22.667 0.00 0.00 0.001 O | | | | 0.03

22.750 0.00 0.00 0.001 O | | | | 0.03

22.833 0.00 0.00 0.001 O | | | | 0.03

22.917 0.00 0.00 0.001 O | | | | 0.03

23.000 0.00 0.00 0.001 O | | | | 0.03
Item Number: 1.

Page 895 of 2517 ends

23.083 0.00 0.00 0.001 O | | | | 0.03

23.167 0.00 0.00 0.001 O | | | | 0.03

23.250 0.00 0.00 0.001 O | | | | 0.03

23.333 0.00 0.00 0.001 O | | | | 0.03

23.417 0.00 0.00 0.001 O | | | | 0.03

23.500 0.00 0.00 0.001 O | | | | 0.03

23.583 0.00 0.00 0.001 O | | | | 0.03

23.667 0.00 0.00 0.001 O | | | | 0.03

23.750 0.00 0.00 0.001 O | | | | 0.03

23.833 0.00 0.00 0.001 O | | | | 0.03

23.917 0.00 0.00 0.001 O | | | | 0.03

24.000 0.00 0.00 0.001 O | | | | 0.02

24.083 0.00 0.00 0.001 O | | | | 0.02

24.167 0.00 0.00 0.001 O | | | | 0.02

24.250 0.00 0.00 0.001 O | | | | 0.02

24.333 0.00 0.00 0.001 O | | | | 0.02

24.417 0.00 0.00 0.001 O | | | | 0.02

24.500 0.00 0.00 0.001 O | | | | 0.02

24.583 0.00 0.00 0.001 O | | | | 0.02

24.667 0.00 0.00 0.001 O | | | | 0.02

24.750 0.00 0.00 0.001 O | | | | 0.02

24.833 0.00 0.00 0.001 O | | | | 0.02

24.917 0.00 0.00 0.001 O | | | | 0.02

25.000 0.00 0.00 0.001 O | | | | 0.02

25.083 0.00 0.00 0.001 O | | | | 0.02

25.167 0.00 0.00 0.001 O | | | | 0.02

25.250 0.00 0.00 0.001 O | | | | 0.02

25.333 0.00 0.00 0.001 O | | | | 0.02

25.417 0.00 0.00 0.001 O | | | | 0.02

25.500 0.00 0.00 0.001 O | | | | 0.02

25.583 0.00 0.00 0.001 O | | | | 0.02

25.667 0.00 0.00 0.001 O | | | | 0.02

25.750 0.00 0.00 0.001 O | | | | 0.02

25.833 0.00 0.00 0.001 O | | | | 0.02

25.917 0.00 0.00 0.001 O | | | | 0.02

26.000 0.00 0.00 0.001 O | | | | 0.02

26.083 0.00 0.00 0.001 O | | | | 0.02

26.167 0.00 0.00 0.001 O | | | | 0.02

26.250 0.00 0.00 0.001 O | | | | 0.02

26.333 0.00 0.00 0.001 O | | | | 0.02

26.417 0.00 0.00 0.001 O | | | | 0.02

26.500 0.00 0.00 0.001 O | | | | 0.01

26.583 0.00 0.00 0.001 O | | | | 0.01

26.667 0.00 0.00 0.001 O | | | | 0.01

26.750 0.00 0.00 0.001 O | | | | 0.01

26.833 0.00 0.00 0.001 O | | | | 0.01

26.917 0.00 0.00 0.001 O | | | | 0.01

27.000 0.00 0.00 0.001 O | | | | 0.01

27.083 0.00 0.00 0.001 O | | | | 0.01

27.167 0.00 0.00 0.001 O | | | | 0.01
Item Number: 1.

Page 896 of 2517 ends

27.250 0.00 0.00 0.001 O | | | | 0.01

27.333 0.00 0.00 0.001 O | | | | 0.01

27.417 0.00 0.00 0.001 O | | | | 0.01

27.500 0.00 0.00 0.000 O | | | | 0.01

27.583 0.00 0.00 0.000 O | | | | 0.01

27.667 0.00 0.00 0.000 O | | | | 0.01

27.750 0.00 0.00 0.000 O | | | | 0.01

27.833 0.00 0.00 0.000 O | | | | 0.01

27.917 0.00 0.00 0.000 O | | | | 0.01

28.000 0.00 0.00 0.000 O | | | | 0.01

28.083 0.00 0.00 0.000 O | | | | 0.01

28.167 0.00 0.00 0.000 O | | | | 0.01

28.250 0.00 0.00 0.000 O | | | | 0.01

28.333 0.00 0.00 0.000 O | | | | 0.01

28.417 0.00 0.00 0.000 O | | | | 0.01

28.500 0.00 0.00 0.000 O | | | | 0.01

28.583 0.00 0.00 0.000 O | | | | 0.01
****************************HYDROGRAPH DATA**************************** Number of intervals = 343
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 1.833 (CFS)
Total volume = 0.734 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** -------------------------------------------------------------------- Item Number: 1.

Page 897 of 2517 ends

FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2018
Study date: 09/22/22
--------------------------------------------------------------------- Desert Hot Springs
Basin Routing
100 yr
6 hr
-------------------------------------------------------------------- Program License Serial Number 6481
-------------------------------------------------------------------- ********************* HYDROGRAPH INFORMATION ********************** From study/file name: 183postuh6100.rte
****************************HYDROGRAPH DATA**************************** Number of intervals = 74
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 7.746 (CFS)
Total volume = 0.932 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Process from Point/Station 201.000 to Point/Station 202.000 **** RETARDING BASIN ROUTING ****
______________________________________________________________________ User entry of depth-outflow-storage data
-------------------------------------------------------------------- Total number of inflow hydrograph intervals = 74
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
-------------------------------------------------------------------- -------------------------------------------------------------------- Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Item Number: 1.

Page 898 of 2517 ends

--------------------------------------------------------------------- -------------------------------------------------------------------- Depth vs. Storage and Depth vs. Discharge data:

Basin Depth Storage Outflow (S-O*dt/2) (S+O*dt/2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
---------------------------------------------------------------------

0.000 0.000 0.000 0.000 0.000

1.000 0.041 0.102 0.041 0.041

1.330 0.066 0.974 0.063 0.069

1.670 0.090 1.833 0.084 0.096

2.000 0.114 1.833 0.108 0.120

3.000 0.186 1.833 0.180 0.192

4.000 0.258 1.833 0.252 0.264

5.000 0.330 1.833 0.324 0.336

6.000 0.403 1.833 0.397 0.409

0.083 0.38 0.00 0.001 OI | | | | 0.03

0.167 0.69 0.01 0.005 O I | | | | 0.12

0.250 0.77 0.02 0.010 O I | | | | 0.24

0.333 0.77 0.04 0.015 O I | | | | 0.36

0.417 0.77 0.05 0.020 O I | | | | 0.49

0.500 0.85 0.06 0.025 O I | | | | 0.61

0.583 0.89 0.08 0.031 O I | | | | 0.75

0.667 0.90 0.09 0.036 O I | | | | 0.88

0.750 0.90 0.13 0.042 O I | | | | 1.01

0.833 0.90 0.29 0.046 |O I | | | | 1.07

0.917 0.90 0.42 0.050 |O I | | | | 1.12

1.000 0.97 0.53 0.053 | O I | | | | 1.16

1.083 1.02 0.63 0.056 | O I | | | | 1.20

1.167 1.03 0.72 0.059 | O I | | | | 1.23

1.250 1.03 0.78 0.061 | OI | | | | 1.26

1.333 1.03 0.84 0.062 | OI | | | | 1.28

1.417 1.03 0.88 0.063 | OI | | | | 1.29

1.500 1.03 0.91 0.064 | OI | | | | 1.31

1.583 1.03 0.93 0.065 | OI | | | | 1.31

1.667 1.03 0.95 0.065 | OI | | | | 1.32

1.750 1.03 0.97 0.066 | O | | | | 1.33

1.833 1.03 0.98 0.066 | O | | | | 1.33

1.917 1.03 0.99 0.066 | O | | | | 1.34

2.000 1.10 1.01 0.067 | O | | | | 1.34

2.083 1.07 1.03 0.067 | O | | | | 1.35

2.167 1.11 1.04 0.068 | O | | | | 1.36
Item Number: 1.

Page 899 of 2517 ends

2.250 1.15 1.06 0.068 | O | | | | 1.36

2.333 1.16 1.08 0.069 | O | | | | 1.37

2.417 1.16 1.10 0.069 | O | | | | 1.38

2.500 1.16 1.11 0.070 | O | | | | 1.38

2.583 1.16 1.12 0.070 | O | | | | 1.39

2.667 1.16 1.13 0.070 | O | | | | 1.39

2.750 1.23 1.14 0.071 | OI | | | | 1.40

2.833 1.28 1.17 0.071 | OI | | | | 1.41

2.917 1.28 1.19 0.072 | OI | | | | 1.42

3.000 1.28 1.21 0.073 | O | | | | 1.42

3.083 1.28 1.23 0.073 | O | | | | 1.43

3.167 1.36 1.25 0.074 | O | | | | 1.44

3.250 1.41 1.28 0.074 | O | | | | 1.45

3.333 1.41 1.31 0.075 | O | | | | 1.46

3.417 1.49 1.34 0.076 | OI | | | | 1.47

3.500 1.61 1.38 0.077 | OI | | | | 1.49

3.583 1.74 1.45 0.079 | O I| | | | 1.52

3.667 1.79 1.52 0.081 | OI| | | | 1.55

3.750 1.87 1.59 0.083 | OI| | | | 1.57

3.833 1.92 1.66 0.085 | OI| | | | 1.60

3.917 2.02 1.72 0.087 | OI | | | 1.63

4.000 2.08 1.80 0.089 | OI | | | 1.66

4.083 2.18 1.83 0.091 | OI | | | 1.69

4.167 2.33 1.83 0.094 | O|I | | | 1.73

4.250 2.48 1.83 0.098 | O| I | | | 1.78

4.333 2.64 1.83 0.103 | O| I | | | 1.85

4.417 2.80 1.83 0.109 | O| I | | | 1.93

4.500 2.86 1.83 0.116 | O| I | | | 2.03

4.583 2.96 1.83 0.123 | O| I | | | 2.13

4.667 3.11 1.83 0.132 | O| I | | | 2.24

4.750 3.27 1.83 0.141 | O| I | | | 2.37

4.833 3.33 1.83 0.151 | O| I | | | 2.51

4.917 3.43 1.83 0.162 | O| I | | | 2.66

5.000 3.58 1.83 0.173 | O| I | | | 2.82

5.083 4.11 1.83 0.187 | O| I | | 3.01

5.167 4.87 1.83 0.205 | O| | I | | 3.27

5.250 5.46 1.83 0.228 | O| | I | | 3.59

5.333 5.95 1.83 0.255 | O| | I | 3.96

5.417 6.60 1.83 0.286 | O| | | I | 4.38

5.500 7.75 1.83 0.322 | O| | | I 4.89

5.583 4.84 1.83 0.353 | O| | I | | 5.32

5.667 1.94 1.83 0.364 | OI | | | 5.46

5.750 0.98 1.83 0.361 | I O| | | | 5.43

5.833 0.71 1.83 0.354 | I O| | | | 5.33

5.917 0.49 1.83 0.346 | I O| | | | 5.22

6.000 0.32 1.83 0.336 |I O| | | | 5.08

6.083 0.11 1.83 0.325 I O| | | | 4.93

6.167 0.01 1.83 0.313 I O| | | | 4.76

6.250 0.00 1.83 0.300 I O| | | | 4.58

6.333 0.00 1.83 0.287 I O| | | | 4.41
Item Number: 1.

Page 900 of 2517 ends

6.417 0.00 1.83 0.275 I O| | | | 4.23

6.500 0.00 1.83 0.262 I O| | | | 4.06

6.583 0.00 1.83 0.250 I O| | | | 3.88

6.667 0.00 1.83 0.237 I O| | | | 3.71

6.750 0.00 1.83 0.224 I O| | | | 3.53

6.833 0.00 1.83 0.212 I O| | | | 3.36

6.917 0.00 1.83 0.199 I O| | | | 3.18

7.000 0.00 1.83 0.186 I O| | | | 3.01

7.083 0.00 1.83 0.174 I O| | | | 2.83

7.167 0.00 1.83 0.161 I O| | | | 2.66

7.250 0.00 1.83 0.149 I O| | | | 2.48

7.333 0.00 1.83 0.136 I O| | | | 2.31

7.417 0.00 1.83 0.123 I O| | | | 2.13

7.500 0.00 1.83 0.111 I O| | | | 1.95

7.583 0.00 1.83 0.098 I O| | | | 1.78

7.667 0.00 1.69 0.086 I O | | | | 1.61

7.750 0.00 1.32 0.076 I O | | | | 1.47

7.833 0.00 1.03 0.068 I O | | | | 1.35

7.917 0.00 0.81 0.061 I O | | | | 1.27

8.000 0.00 0.63 0.056 I O | | | | 1.20

8.083 0.00 0.50 0.052 I O | | | | 1.15

8.167 0.00 0.39 0.049 IO | | | | 1.11

8.250 0.00 0.31 0.047 IO | | | | 1.08

8.333 0.00 0.24 0.045 O | | | | 1.05

8.417 0.00 0.19 0.044 O | | | | 1.03

8.500 0.00 0.15 0.042 O | | | | 1.02

8.583 0.00 0.12 0.041 O | | | | 1.01

8.667 0.00 0.10 0.041 O | | | | 0.99

8.750 0.00 0.10 0.040 O | | | | 0.98

8.833 0.00 0.10 0.039 O | | | | 0.96

8.917 0.00 0.10 0.039 O | | | | 0.94

9.000 0.00 0.09 0.038 O | | | | 0.93

9.083 0.00 0.09 0.037 O | | | | 0.91

9.167 0.00 0.09 0.037 O | | | | 0.90

9.250 0.00 0.09 0.036 O | | | | 0.88

9.333 0.00 0.09 0.035 O | | | | 0.87

9.417 0.00 0.09 0.035 O | | | | 0.85

9.500 0.00 0.09 0.034 O | | | | 0.84

9.583 0.00 0.08 0.034 O | | | | 0.82

9.667 0.00 0.08 0.033 O | | | | 0.81

9.750 0.00 0.08 0.033 O | | | | 0.79

9.833 0.00 0.08 0.032 O | | | | 0.78

9.917 0.00 0.08 0.031 O | | | | 0.77

10.000 0.00 0.08 0.031 O | | | | 0.75

10.083 0.00 0.08 0.030 O | | | | 0.74

10.167 0.00 0.07 0.030 O | | | | 0.73

10.250 0.00 0.07 0.029 O | | | | 0.72

10.333 0.00 0.07 0.029 O | | | | 0.70

10.417 0.00 0.07 0.028 O | | | | 0.69

10.500 0.00 0.07 0.028 O | | | | 0.68
Item Number: 1.

Page 901 of 2517 ends

10.583 0.00 0.07 0.027 O | | | | 0.67

10.667 0.00 0.07 0.027 O | | | | 0.66

10.750 0.00 0.07 0.027 O | | | | 0.65

10.833 0.00 0.06 0.026 O | | | | 0.64

10.917 0.00 0.06 0.026 O | | | | 0.62

11.000 0.00 0.06 0.025 O | | | | 0.61

11.083 0.00 0.06 0.025 O | | | | 0.60

11.167 0.00 0.06 0.024 O | | | | 0.59

11.250 0.00 0.06 0.024 O | | | | 0.58

11.333 0.00 0.06 0.024 O | | | | 0.57

11.417 0.00 0.06 0.023 O | | | | 0.56

11.500 0.00 0.06 0.023 O | | | | 0.55

11.583 0.00 0.06 0.022 O | | | | 0.54

11.667 0.00 0.05 0.022 O | | | | 0.54

11.750 0.00 0.05 0.022 O | | | | 0.53

11.833 0.00 0.05 0.021 O | | | | 0.52

11.917 0.00 0.05 0.021 O | | | | 0.51

12.000 0.00 0.05 0.020 O | | | | 0.50

12.083 0.00 0.05 0.020 O | | | | 0.49

12.167 0.00 0.05 0.020 O | | | | 0.48

12.250 0.00 0.05 0.019 O | | | | 0.47

12.333 0.00 0.05 0.019 O | | | | 0.47

12.417 0.00 0.05 0.019 O | | | | 0.46

12.500 0.00 0.05 0.018 O | | | | 0.45

12.583 0.00 0.05 0.018 O | | | | 0.44

12.667 0.00 0.04 0.018 O | | | | 0.44

12.750 0.00 0.04 0.018 O | | | | 0.43

12.833 0.00 0.04 0.017 O | | | | 0.42

12.917 0.00 0.04 0.017 O | | | | 0.41

13.000 0.00 0.04 0.017 O | | | | 0.41

13.083 0.00 0.04 0.016 O | | | | 0.40

13.167 0.00 0.04 0.016 O | | | | 0.39

13.250 0.00 0.04 0.016 O | | | | 0.39

13.333 0.00 0.04 0.016 O | | | | 0.38

13.417 0.00 0.04 0.015 O | | | | 0.37

13.500 0.00 0.04 0.015 O | | | | 0.37

13.583 0.00 0.04 0.015 O | | | | 0.36

13.667 0.00 0.04 0.015 O | | | | 0.35

13.750 0.00 0.04 0.014 O | | | | 0.35

13.833 0.00 0.03 0.014 O | | | | 0.34

13.917 0.00 0.03 0.014 O | | | | 0.34

14.000 0.00 0.03 0.014 O | | | | 0.33

14.083 0.00 0.03 0.013 O | | | | 0.33

14.167 0.00 0.03 0.013 O | | | | 0.32

14.250 0.00 0.03 0.013 O | | | | 0.31

14.333 0.00 0.03 0.013 O | | | | 0.31

14.417 0.00 0.03 0.012 O | | | | 0.30

14.500 0.00 0.03 0.012 O | | | | 0.30

14.583 0.00 0.03 0.012 O | | | | 0.29

14.667 0.00 0.03 0.012 O | | | | 0.29
Item Number: 1.

Page 902 of 2517 ends

14.750 0.00 0.03 0.012 O | | | | 0.28

14.833 0.00 0.03 0.011 O | | | | 0.28

14.917 0.00 0.03 0.011 O | | | | 0.27

15.000 0.00 0.03 0.011 O | | | | 0.27

15.083 0.00 0.03 0.011 O | | | | 0.27

15.167 0.00 0.03 0.011 O | | | | 0.26

15.250 0.00 0.03 0.011 O | | | | 0.26

15.333 0.00 0.03 0.010 O | | | | 0.25

15.417 0.00 0.03 0.010 O | | | | 0.25

15.500 0.00 0.02 0.010 O | | | | 0.24

15.583 0.00 0.02 0.010 O | | | | 0.24

15.667 0.00 0.02 0.010 O | | | | 0.24

15.750 0.00 0.02 0.009 O | | | | 0.23

15.833 0.00 0.02 0.009 O | | | | 0.23

15.917 0.00 0.02 0.009 O | | | | 0.22

16.000 0.00 0.02 0.009 O | | | | 0.22

16.083 0.00 0.02 0.009 O | | | | 0.22

16.167 0.00 0.02 0.009 O | | | | 0.21

16.250 0.00 0.02 0.009 O | | | | 0.21

16.333 0.00 0.02 0.008 O | | | | 0.21

16.417 0.00 0.02 0.008 O | | | | 0.20

16.500 0.00 0.02 0.008 O | | | | 0.20

16.583 0.00 0.02 0.008 O | | | | 0.19

16.667 0.00 0.02 0.008 O | | | | 0.19

16.750 0.00 0.02 0.008 O | | | | 0.19

16.833 0.00 0.02 0.008 O | | | | 0.19

16.917 0.00 0.02 0.007 O | | | | 0.18

17.000 0.00 0.02 0.007 O | | | | 0.18

17.083 0.00 0.02 0.007 O | | | | 0.18

17.167 0.00 0.02 0.007 O | | | | 0.17

17.250 0.00 0.02 0.007 O | | | | 0.17

17.333 0.00 0.02 0.007 O | | | | 0.17

17.417 0.00 0.02 0.007 O | | | | 0.16

17.500 0.00 0.02 0.007 O | | | | 0.16

17.583 0.00 0.02 0.007 O | | | | 0.16

17.667 0.00 0.02 0.006 O | | | | 0.16

17.750 0.00 0.02 0.006 O | | | | 0.15

17.833 0.00 0.02 0.006 O | | | | 0.15

17.917 0.00 0.02 0.006 O | | | | 0.15

18.000 0.00 0.01 0.006 O | | | | 0.15

18.083 0.00 0.01 0.006 O | | | | 0.14

18.167 0.00 0.01 0.006 O | | | | 0.14

18.250 0.00 0.01 0.006 O | | | | 0.14

18.333 0.00 0.01 0.006 O | | | | 0.14

18.417 0.00 0.01 0.005 O | | | | 0.13

18.500 0.00 0.01 0.005 O | | | | 0.13

18.583 0.00 0.01 0.005 O | | | | 0.13

18.667 0.00 0.01 0.005 O | | | | 0.13

18.750 0.00 0.01 0.005 O | | | | 0.12

18.833 0.00 0.01 0.005 O | | | | 0.12
Item Number: 1.

Page 903 of 2517 ends

18.917 0.00 0.01 0.005 O | | | | 0.12

19.000 0.00 0.01 0.005 O | | | | 0.12

19.083 0.00 0.01 0.005 O | | | | 0.12

19.167 0.00 0.01 0.005 O | | | | 0.11

19.250 0.00 0.01 0.005 O | | | | 0.11

19.333 0.00 0.01 0.005 O | | | | 0.11

19.417 0.00 0.01 0.004 O | | | | 0.11

19.500 0.00 0.01 0.004 O | | | | 0.11

19.583 0.00 0.01 0.004 O | | | | 0.11

19.667 0.00 0.01 0.004 O | | | | 0.10

19.750 0.00 0.01 0.004 O | | | | 0.10

19.833 0.00 0.01 0.004 O | | | | 0.10

19.917 0.00 0.01 0.004 O | | | | 0.10

20.000 0.00 0.01 0.004 O | | | | 0.10

20.083 0.00 0.01 0.004 O | | | | 0.09

20.167 0.00 0.01 0.004 O | | | | 0.09

20.250 0.00 0.01 0.004 O | | | | 0.09

20.333 0.00 0.01 0.004 O | | | | 0.09

20.417 0.00 0.01 0.004 O | | | | 0.09

20.500 0.00 0.01 0.004 O | | | | 0.09

20.583 0.00 0.01 0.004 O | | | | 0.09

20.667 0.00 0.01 0.003 O | | | | 0.08

20.750 0.00 0.01 0.003 O | | | | 0.08

20.833 0.00 0.01 0.003 O | | | | 0.08

20.917 0.00 0.01 0.003 O | | | | 0.08

21.000 0.00 0.01 0.003 O | | | | 0.08

21.083 0.00 0.01 0.003 O | | | | 0.08

21.167 0.00 0.01 0.003 O | | | | 0.08

21.250 0.00 0.01 0.003 O | | | | 0.07

21.333 0.00 0.01 0.003 O | | | | 0.07

21.417 0.00 0.01 0.003 O | | | | 0.07

21.500 0.00 0.01 0.003 O | | | | 0.07

21.583 0.00 0.01 0.003 O | | | | 0.07

21.667 0.00 0.01 0.003 O | | | | 0.07

21.750 0.00 0.01 0.003 O | | | | 0.07

21.833 0.00 0.01 0.003 O | | | | 0.07

21.917 0.00 0.01 0.003 O | | | | 0.07

22.000 0.00 0.01 0.003 O | | | | 0.06

22.083 0.00 0.01 0.003 O | | | | 0.06

22.167 0.00 0.01 0.003 O | | | | 0.06

22.250 0.00 0.01 0.002 O | | | | 0.06

22.333 0.00 0.01 0.002 O | | | | 0.06

22.417 0.00 0.01 0.002 O | | | | 0.06

22.500 0.00 0.01 0.002 O | | | | 0.06

22.583 0.00 0.01 0.002 O | | | | 0.06

22.667 0.00 0.01 0.002 O | | | | 0.06

22.750 0.00 0.01 0.002 O | | | | 0.05

22.833 0.00 0.01 0.002 O | | | | 0.05

22.917 0.00 0.01 0.002 O | | | | 0.05

23.000 0.00 0.01 0.002 O | | | | 0.05
Item Number: 1.

Page 904 of 2517 ends

23.083 0.00 0.01 0.002 O | | | | 0.05

23.167 0.00 0.01 0.002 O | | | | 0.05

23.250 0.00 0.01 0.002 O | | | | 0.05

23.333 0.00 0.00 0.002 O | | | | 0.05

23.417 0.00 0.00 0.002 O | | | | 0.05

23.500 0.00 0.00 0.002 O | | | | 0.05

23.583 0.00 0.00 0.002 O | | | | 0.05

23.667 0.00 0.00 0.002 O | | | | 0.05

23.750 0.00 0.00 0.002 O | | | | 0.04

23.833 0.00 0.00 0.002 O | | | | 0.04

23.917 0.00 0.00 0.002 O | | | | 0.04

24.000 0.00 0.00 0.002 O | | | | 0.04

24.083 0.00 0.00 0.002 O | | | | 0.04

24.167 0.00 0.00 0.002 O | | | | 0.04

24.250 0.00 0.00 0.002 O | | | | 0.04

24.333 0.00 0.00 0.002 O | | | | 0.04

24.417 0.00 0.00 0.002 O | | | | 0.04

24.500 0.00 0.00 0.002 O | | | | 0.04

24.583 0.00 0.00 0.002 O | | | | 0.04

24.667 0.00 0.00 0.002 O | | | | 0.04

24.750 0.00 0.00 0.001 O | | | | 0.04

24.833 0.00 0.00 0.001 O | | | | 0.04

24.917 0.00 0.00 0.001 O | | | | 0.04

25.000 0.00 0.00 0.001 O | | | | 0.03

25.083 0.00 0.00 0.001 O | | | | 0.03

25.167 0.00 0.00 0.001 O | | | | 0.03

25.250 0.00 0.00 0.001 O | | | | 0.03

25.333 0.00 0.00 0.001 O | | | | 0.03

25.417 0.00 0.00 0.001 O | | | | 0.03

25.500 0.00 0.00 0.001 O | | | | 0.03

25.583 0.00 0.00 0.001 O | | | | 0.03

25.667 0.00 0.00 0.001 O | | | | 0.03

25.750 0.00 0.00 0.001 O | | | | 0.03

25.833 0.00 0.00 0.001 O | | | | 0.03

25.917 0.00 0.00 0.001 O | | | | 0.03

26.000 0.00 0.00 0.001 O | | | | 0.03

26.083 0.00 0.00 0.001 O | | | | 0.03

26.167 0.00 0.00 0.001 O | | | | 0.03

26.250 0.00 0.00 0.001 O | | | | 0.03

26.333 0.00 0.00 0.001 O | | | | 0.03

26.417 0.00 0.00 0.001 O | | | | 0.03

26.500 0.00 0.00 0.001 O | | | | 0.03

26.583 0.00 0.00 0.001 O | | | | 0.02

26.667 0.00 0.00 0.001 O | | | | 0.02

26.750 0.00 0.00 0.001 O | | | | 0.02

26.833 0.00 0.00 0.001 O | | | | 0.02

26.917 0.00 0.00 0.001 O | | | | 0.02

27.000 0.00 0.00 0.001 O | | | | 0.02

27.083 0.00 0.00 0.001 O | | | | 0.02

27.167 0.00 0.00 0.001 O | | | | 0.02
Item Number: 1.

Page 905 of 2517 ends

27.250 0.00 0.00 0.001 O | | | | 0.02

27.333 0.00 0.00 0.001 O | | | | 0.02

27.417 0.00 0.00 0.001 O | | | | 0.02

27.500 0.00 0.00 0.001 O | | | | 0.02

27.583 0.00 0.00 0.001 O | | | | 0.02

27.667 0.00 0.00 0.001 O | | | | 0.02

27.750 0.00 0.00 0.001 O | | | | 0.02

27.833 0.00 0.00 0.001 O | | | | 0.02

27.917 0.00 0.00 0.001 O | | | | 0.02

28.000 0.00 0.00 0.001 O | | | | 0.02

28.083 0.00 0.00 0.001 O | | | | 0.02

28.167 0.00 0.00 0.001 O | | | | 0.02

28.250 0.00 0.00 0.001 O | | | | 0.02

28.333 0.00 0.00 0.001 O | | | | 0.02

28.417 0.00 0.00 0.001 O | | | | 0.02

28.500 0.00 0.00 0.001 O | | | | 0.02

28.583 0.00 0.00 0.001 O | | | | 0.02

28.667 0.00 0.00 0.001 O | | | | 0.02

28.750 0.00 0.00 0.001 O | | | | 0.02

28.833 0.00 0.00 0.001 O | | | | 0.02

28.917 0.00 0.00 0.001 O | | | | 0.02

29.000 0.00 0.00 0.001 O | | | | 0.02

29.083 0.00 0.00 0.001 O | | | | 0.01

29.167 0.00 0.00 0.001 O | | | | 0.01

29.250 0.00 0.00 0.001 O | | | | 0.01

29.333 0.00 0.00 0.001 O | | | | 0.01

29.417 0.00 0.00 0.001 O | | | | 0.01

29.500 0.00 0.00 0.001 O | | | | 0.01

29.583 0.00 0.00 0.001 O | | | | 0.01

29.667 0.00 0.00 0.001 O | | | | 0.01

29.750 0.00 0.00 0.001 O | | | | 0.01

29.833 0.00 0.00 0.001 O | | | | 0.01

29.917 0.00 0.00 0.001 O | | | | 0.01

30.000 0.00 0.00 0.001 O | | | | 0.01

30.083 0.00 0.00 0.000 O | | | | 0.01

30.167 0.00 0.00 0.000 O | | | | 0.01

30.250 0.00 0.00 0.000 O | | | | 0.01

30.333 0.00 0.00 0.000 O | | | | 0.01

30.417 0.00 0.00 0.000 O | | | | 0.01

30.500 0.00 0.00 0.000 O | | | | 0.01

30.583 0.00 0.00 0.000 O | | | | 0.01

30.667 0.00 0.00 0.000 O | | | | 0.01

30.750 0.00 0.00 0.000 O | | | | 0.01

30.833 0.00 0.00 0.000 O | | | | 0.01

30.917 0.00 0.00 0.000 O | | | | 0.01

31.000 0.00 0.00 0.000 O | | | | 0.01

31.083 0.00 0.00 0.000 O | | | | 0.01

31.167 0.00 0.00 0.000 O | | | | 0.01
****************************HYDROGRAPH DATA**************************** Item Number: 1.

Page 906 of 2517 ends

Number of intervals = 374
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 1.833 (CFS)
Total volume = 0.932 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** -------------------------------------------------------------------- Item Number: 1.

Page 907 of 2517 ends

FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2018
Study date: 09/22/22
--------------------------------------------------------------------- Desert Hot Springs
Basin Routing
100 yr
24 hr
-------------------------------------------------------------------- Program License Serial Number 6481
-------------------------------------------------------------------- ********************* HYDROGRAPH INFORMATION ********************** From study/file name: 183postuh24100.rte
****************************HYDROGRAPH DATA**************************** Number of intervals = 290
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 2.581 (CFS)
Total volume = 1.483 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Process from Point/Station 201.000 to Point/Station 202.000 **** RETARDING BASIN ROUTING ****
______________________________________________________________________ User entry of depth-outflow-storage data
-------------------------------------------------------------------- Total number of inflow hydrograph intervals = 290
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
-------------------------------------------------------------------- -------------------------------------------------------------------- Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Item Number: 1.

Page 908 of 2517 ends

--------------------------------------------------------------------- -------------------------------------------------------------------- Depth vs. Storage and Depth vs. Discharge data:

Basin Depth Storage Outflow (S-O*dt/2) (S+O*dt/2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
---------------------------------------------------------------------

0.000 0.000 0.000 0.000 0.000

1.000 0.041 0.102 0.041 0.041

1.330 0.066 0.974 0.063 0.069

1.670 0.090 1.833 0.084 0.096

2.000 0.114 1.833 0.108 0.120

3.000 0.186 1.833 0.180 0.192

4.000 0.258 1.833 0.252 0.264

5.000 0.330 1.833 0.324 0.336

6.000 0.403 1.833 0.397 0.409

0.083 0.08 0.00 0.000 OI | | | | 0.01

0.167 0.14 0.00 0.001 OI | | | | 0.03

0.250 0.14 0.00 0.002 OI | | | | 0.05

0.333 0.18 0.01 0.003 O I | | | | 0.07

0.417 0.21 0.01 0.004 O I | | | | 0.11

0.500 0.21 0.01 0.006 O I | | | | 0.14

0.583 0.21 0.02 0.007 O I | | | | 0.17

0.667 0.21 0.02 0.008 O I | | | | 0.21

0.750 0.21 0.02 0.010 O I | | | | 0.24

0.833 0.26 0.03 0.011 O I | | | | 0.27

0.917 0.28 0.03 0.013 O I | | | | 0.31

1.000 0.28 0.04 0.015 O I | | | | 0.35

1.083 0.24 0.04 0.016 O I | | | | 0.39

1.167 0.22 0.04 0.017 O I | | | | 0.42

1.250 0.21 0.05 0.019 O I | | | | 0.45

1.333 0.21 0.05 0.020 O I | | | | 0.48

1.417 0.21 0.05 0.021 O I | | | | 0.51

1.500 0.21 0.05 0.022 O I | | | | 0.53

1.583 0.21 0.06 0.023 O I | | | | 0.56

1.667 0.21 0.06 0.024 O I | | | | 0.59

1.750 0.21 0.06 0.025 O I | | | | 0.61

1.833 0.26 0.07 0.026 O I | | | | 0.64

1.917 0.28 0.07 0.028 O I | | | | 0.67

2.000 0.28 0.07 0.029 O I | | | | 0.71

2.083 0.28 0.08 0.031 O I | | | | 0.74

2.167 0.28 0.08 0.032 O I | | | | 0.78
Item Number: 1.

Page 909 of 2517 ends

2.250 0.28 0.08 0.033 |O I | | | | 0.81

2.333 0.28 0.09 0.035 |O I | | | | 0.85

2.417 0.28 0.09 0.036 |O I | | | | 0.88

2.500 0.28 0.09 0.037 |O I | | | | 0.91

2.583 0.33 0.10 0.039 |O I | | | | 0.95

2.667 0.35 0.10 0.040 |O I | | | | 0.99

2.750 0.35 0.14 0.042 |O I | | | | 1.01

2.833 0.35 0.19 0.043 | O I | | | | 1.03

2.917 0.35 0.22 0.044 | O I | | | | 1.05

3.000 0.35 0.25 0.045 | OI | | | | 1.06

3.083 0.35 0.27 0.046 | OI | | | | 1.06

3.167 0.35 0.29 0.046 | OI | | | | 1.07

3.250 0.35 0.30 0.047 | OI | | | | 1.08

3.333 0.35 0.32 0.047 | OI | | | | 1.08

3.417 0.35 0.32 0.047 | O | | | | 1.08

3.500 0.35 0.33 0.048 | O | | | | 1.09

3.583 0.35 0.34 0.048 | O | | | | 1.09

3.667 0.35 0.34 0.048 | O | | | | 1.09

3.750 0.35 0.34 0.048 | O | | | | 1.09

3.833 0.40 0.35 0.048 | O | | | | 1.09

3.917 0.42 0.36 0.048 | OI | | | | 1.10

4.000 0.43 0.38 0.049 | OI | | | | 1.10

4.083 0.43 0.39 0.049 | OI | | | | 1.11

4.167 0.43 0.40 0.049 | OI | | | | 1.11

4.250 0.43 0.40 0.050 | OI | | | | 1.11

4.333 0.47 0.41 0.050 | O | | | | 1.12

4.417 0.49 0.43 0.050 | OI | | | | 1.12

4.500 0.50 0.44 0.051 | OI | | | | 1.13

4.583 0.50 0.45 0.051 | OI | | | | 1.13

4.667 0.50 0.46 0.051 | OI | | | | 1.14

4.750 0.50 0.47 0.052 | OI | | | | 1.14

4.833 0.54 0.48 0.052 | OI | | | | 1.14

4.917 0.56 0.50 0.052 | OI| | | | 1.15

5.000 0.57 0.51 0.053 | OI| | | | 1.15

5.083 0.48 0.51 0.053 | IO | | | | 1.16

5.167 0.43 0.50 0.052 | IO | | | | 1.15

5.250 0.43 0.49 0.052 | IO | | | | 1.15

5.333 0.47 0.48 0.052 | O | | | | 1.14

5.417 0.49 0.48 0.052 | OI | | | | 1.14

5.500 0.50 0.48 0.052 | OI | | | | 1.14

5.583 0.54 0.49 0.052 | O | | | | 1.15

5.667 0.56 0.50 0.052 | OI| | | | 1.15

5.750 0.57 0.52 0.053 | OI| | | | 1.16

5.833 0.57 0.53 0.053 | OI| | | | 1.16

5.917 0.57 0.54 0.053 | OI| | | | 1.16

6.000 0.57 0.54 0.054 | OI| | | | 1.17

6.083 0.61 0.55 0.054 | OI| | | | 1.17

6.167 0.64 0.57 0.054 | O| | | | 1.18

6.250 0.64 0.58 0.055 | O| | | | 1.18

6.333 0.64 0.59 0.055 | O| | | | 1.19
Item Number: 1.

Page 910 of 2517 ends

6.417 0.64 0.60 0.055 | O| | | | 1.19

6.500 0.64 0.61 0.056 | O| | | | 1.19

6.583 0.68 0.62 0.056 | OI | | | 1.20

6.667 0.71 0.64 0.056 | OI | | | 1.20

6.750 0.71 0.65 0.057 | O | | | 1.21

6.833 0.71 0.66 0.057 | O | | | 1.21

6.917 0.71 0.67 0.057 | O | | | 1.22

7.000 0.71 0.68 0.058 | O | | | 1.22

7.083 0.71 0.69 0.058 | O | | | 1.22

7.167 0.71 0.69 0.058 | O | | | 1.22

7.250 0.71 0.70 0.058 | O | | | 1.22

7.333 0.75 0.70 0.058 | OI | | | 1.23

7.417 0.78 0.72 0.059 | OI | | | 1.23

7.500 0.78 0.73 0.059 | |O | | | 1.24

7.583 0.82 0.75 0.059 | |OI | | | 1.24

7.667 0.85 0.76 0.060 | |OI | | | 1.25

7.750 0.85 0.78 0.061 | |OI | | | 1.26

7.833 0.89 0.80 0.061 | |O I | | | 1.26

7.917 0.92 0.82 0.062 | | OI | | | 1.27

8.000 0.92 0.85 0.062 | | OI | | | 1.28

8.083 1.01 0.87 0.063 | | O I | | | 1.29

8.167 1.06 0.91 0.064 | | O I | | | 1.30

8.250 1.06 0.94 0.065 | | O I | | | 1.32

8.333 1.06 0.97 0.066 | | O I | | | 1.33

8.417 1.06 0.99 0.066 | | OI | | | 1.34

8.500 1.06 1.00 0.067 | | OI | | | 1.34

8.583 1.11 1.02 0.067 | | OI | | | 1.35

8.667 1.13 1.04 0.068 | | O I | | | 1.36

8.750 1.14 1.06 0.068 | | OI | | | 1.37

8.833 1.18 1.08 0.069 | | OI | | | 1.37

8.917 1.20 1.11 0.070 | | OI | | | 1.38

9.000 1.21 1.13 0.070 | | OI | | | 1.39

9.083 1.29 1.15 0.071 | | O I | | 1.40

9.167 1.34 1.19 0.072 | | O I | | 1.42

9.250 1.35 1.22 0.073 | | OI | | 1.43

9.333 1.39 1.26 0.074 | | O|I | | 1.44

9.417 1.42 1.29 0.075 | | O|I | | 1.45

9.500 1.42 1.32 0.076 | | OI | | 1.47

9.583 1.46 1.34 0.076 | | O I | | 1.48

9.667 1.49 1.37 0.077 | | |OI | | 1.49

9.750 1.49 1.40 0.078 | | |OI | | 1.50

9.833 1.53 1.42 0.079 | | |OI | | 1.51

9.917 1.56 1.45 0.079 | | |O I | | 1.52

10.000 1.56 1.47 0.080 | | | OI | | 1.53

10.083 1.26 1.46 0.080 | | I| O | | 1.52

10.167 1.08 1.40 0.078 | | I |O | | 1.50

10.250 1.06 1.33 0.076 | | I O | | 1.47

10.333 1.06 1.27 0.074 | | I O| | | 1.45

10.417 1.06 1.22 0.073 | | I O| | | 1.43

10.500 1.06 1.19 0.072 | | IO | | | 1.42
Item Number: 1.

Page 911 of 2517 ends

10.583 1.28 1.18 0.072 | | OI| | | 1.41

10.667 1.41 1.22 0.073 | | O|I | | 1.43

10.750 1.42 1.26 0.074 | | O|I | | 1.44

10.833 1.42 1.30 0.075 | | OI | | 1.46

10.917 1.42 1.32 0.076 | | OI | | 1.47

11.000 1.42 1.34 0.076 | | OI | | 1.48

11.083 1.38 1.36 0.077 | | OI | | 1.48

11.167 1.35 1.36 0.077 | | O | | 1.48

11.250 1.35 1.36 0.077 | | O | | 1.48

11.333 1.35 1.35 0.077 | | O | | 1.48

11.417 1.35 1.35 0.077 | | O | | 1.48

11.500 1.35 1.35 0.077 | | O | | 1.48

11.583 1.26 1.34 0.076 | | IO | | 1.48

11.667 1.21 1.32 0.076 | | IO | | 1.47

11.750 1.21 1.29 0.075 | | I O | | 1.46

11.833 1.25 1.28 0.075 | | O| | | 1.45

11.917 1.27 1.28 0.074 | | O| | | 1.45

12.000 1.28 1.28 0.074 | | O| | | 1.45

12.083 1.57 1.31 0.075 | | O I | | 1.46

12.167 1.75 1.39 0.078 | | |O I | | 1.49

12.250 1.77 1.47 0.080 | | | O I | | 1.53

12.333 1.83 1.54 0.082 | | | O I | | 1.55

12.417 1.86 1.61 0.084 | | | O I| | 1.58

12.500 1.87 1.66 0.085 | | | O I| | 1.60

12.583 1.97 1.72 0.087 | | | O I | 1.63

12.667 2.04 1.78 0.089 | | | O |I | 1.65

12.750 2.04 1.83 0.090 | | | O |I | 1.67

12.833 2.10 1.83 0.092 | | | O | I | 1.70

12.917 2.13 1.83 0.094 | | | O | I | 1.72

13.000 2.14 1.83 0.096 | | | O | I | 1.75

13.083 2.40 1.83 0.099 | | | O | I | 1.79

13.167 2.56 1.83 0.103 | | | O | I| 1.85

13.250 2.58 1.83 0.108 | | | O | I| 1.92

13.333 2.58 1.83 0.113 | | | O | I| 1.99

13.417 2.58 1.83 0.119 | | | O | I| 2.06

13.500 2.58 1.83 0.124 | | | O | I 2.13

13.583 2.02 1.83 0.127 | | | O I | 2.18

13.667 1.67 1.83 0.127 | | | I O | | 2.18

13.750 1.63 1.83 0.126 | | | I O | | 2.16

13.833 1.64 1.83 0.124 | | | I O | | 2.14

13.917 1.64 1.83 0.123 | | | I O | | 2.13

14.000 1.64 1.83 0.122 | | | I O | | 2.11

14.083 1.85 1.83 0.121 | | | O | | 2.10

14.167 1.98 1.83 0.122 | | | O I | 2.11

14.250 1.99 1.83 0.123 | | | O I | 2.12

14.333 1.94 1.83 0.124 | | | O I | 2.13

14.417 1.91 1.83 0.124 | | | OI| | 2.14

14.500 1.91 1.83 0.125 | | | OI| | 2.15

14.583 1.91 1.83 0.125 | | | OI| | 2.16

14.667 1.91 1.83 0.126 | | | OI| | 2.16
Item Number: 1.

Page 912 of 2517 ends

14.750 1.92 1.83 0.126 | | | OI| | 2.17

14.833 1.87 1.83 0.127 | | | OI| | 2.18

14.917 1.84 1.83 0.127 | | | O | | 2.18

15.000 1.83 1.83 0.127 | | | O | | 2.18

15.083 1.78 1.83 0.127 | | | O | | 2.18

15.167 1.75 1.83 0.126 | | | IO | | 2.17

15.250 1.75 1.83 0.126 | | | IO | | 2.16

15.333 1.70 1.83 0.125 | | | IO | | 2.15

15.417 1.67 1.83 0.124 | | | I O | | 2.14

15.500 1.67 1.83 0.123 | | | I O | | 2.12

15.583 1.48 1.83 0.121 | | | I O | | 2.10

15.667 1.36 1.83 0.118 | | I O | | 2.06

15.750 1.35 1.83 0.115 | | I O | | 2.01

15.833 1.35 1.83 0.112 | | I O | | 1.97

15.917 1.35 1.83 0.108 | | I O | | 1.92

16.000 1.35 1.83 0.105 | | I O | | 1.88

16.083 0.71 1.83 0.099 | I | O | | 1.80

16.167 0.32 1.83 0.090 | I | | O | | 1.68

16.250 0.28 1.51 0.081 | I | | O | | 1.54

16.333 0.28 1.24 0.073 | I | O| | | 1.44

16.417 0.28 1.03 0.068 | I | O | | | 1.35

16.500 0.28 0.87 0.063 | I | O | | | 1.29

16.583 0.24 0.74 0.059 | I |O | | | 1.24

16.667 0.22 0.63 0.056 | I O| | | | 1.20

16.750 0.21 0.54 0.054 | I O | | | | 1.17

16.833 0.21 0.47 0.052 | I O | | | | 1.14

16.917 0.21 0.42 0.050 | I O | | | | 1.12

17.000 0.21 0.37 0.049 | I O | | | | 1.10

17.083 0.30 0.35 0.048 | IO | | | | 1.09

17.167 0.35 0.34 0.048 | O | | | | 1.09

17.250 0.35 0.34 0.048 | O | | | | 1.09

17.333 0.35 0.35 0.048 | O | | | | 1.09

17.417 0.35 0.35 0.048 | O | | | | 1.09

17.500 0.35 0.35 0.048 | O | | | | 1.09

17.583 0.35 0.35 0.048 | O | | | | 1.09

17.667 0.35 0.35 0.048 | O | | | | 1.09

17.750 0.35 0.35 0.048 | O | | | | 1.09

17.833 0.31 0.35 0.048 | IO | | | | 1.09

17.917 0.29 0.34 0.048 | IO | | | | 1.09

18.000 0.28 0.33 0.047 | IO | | | | 1.08

18.083 0.28 0.32 0.047 | O | | | | 1.08

18.167 0.28 0.31 0.047 | O | | | | 1.08

18.250 0.28 0.30 0.047 | O | | | | 1.08

18.333 0.28 0.30 0.047 | O | | | | 1.07

18.417 0.28 0.30 0.047 | O | | | | 1.07

18.500 0.28 0.29 0.046 | O | | | | 1.07

18.583 0.24 0.29 0.046 | IO | | | | 1.07

18.667 0.22 0.27 0.046 | IO | | | | 1.07

18.750 0.21 0.26 0.046 | IO | | | | 1.06

18.833 0.17 0.25 0.045 | IO | | | | 1.05
Item Number: 1.

Page 913 of 2517 ends

18.917 0.14 0.23 0.045 |IO | | | | 1.05

19.000 0.14 0.21 0.044 |IO | | | | 1.04

19.083 0.18 0.20 0.044 | O | | | | 1.04

19.167 0.21 0.20 0.044 | O | | | | 1.04

19.250 0.21 0.20 0.044 | O | | | | 1.04

19.333 0.26 0.21 0.044 | OI | | | | 1.04

19.417 0.28 0.22 0.044 | OI | | | | 1.05

19.500 0.28 0.23 0.045 | OI | | | | 1.05

19.583 0.24 0.24 0.045 | O | | | | 1.05

19.667 0.22 0.24 0.045 | O | | | | 1.05

19.750 0.21 0.23 0.045 | O | | | | 1.05

19.833 0.17 0.22 0.044 | O | | | | 1.05

19.917 0.14 0.21 0.044 |IO | | | | 1.04

20.000 0.14 0.20 0.044 |IO | | | | 1.04

20.083 0.18 0.19 0.043 | O | | | | 1.03

20.167 0.21 0.19 0.044 | O | | | | 1.03

20.250 0.21 0.19 0.044 | O | | | | 1.04

20.333 0.21 0.20 0.044 | O | | | | 1.04

20.417 0.21 0.20 0.044 | O | | | | 1.04

20.500 0.21 0.20 0.044 | O | | | | 1.04

20.583 0.21 0.21 0.044 | O | | | | 1.04

20.667 0.21 0.21 0.044 | O | | | | 1.04

20.750 0.21 0.21 0.044 | O | | | | 1.04

20.833 0.17 0.21 0.044 | O | | | | 1.04

20.917 0.14 0.19 0.044 |IO | | | | 1.04

21.000 0.14 0.18 0.043 |IO | | | | 1.03

21.083 0.18 0.18 0.043 | O | | | | 1.03

21.167 0.21 0.18 0.043 | O | | | | 1.03

21.250 0.21 0.19 0.044 | O | | | | 1.03

21.333 0.17 0.19 0.044 | O | | | | 1.03

21.417 0.14 0.18 0.043 |IO | | | | 1.03

21.500 0.14 0.17 0.043 |IO | | | | 1.03

21.583 0.18 0.17 0.043 | O | | | | 1.03

21.667 0.21 0.18 0.043 | O | | | | 1.03

21.750 0.21 0.18 0.043 | O | | | | 1.03

21.833 0.17 0.19 0.043 | O | | | | 1.03

21.917 0.14 0.18 0.043 |IO | | | | 1.03

22.000 0.14 0.17 0.043 |IO | | | | 1.03

22.083 0.18 0.17 0.043 | O | | | | 1.03

22.167 0.21 0.18 0.043 | O | | | | 1.03

22.250 0.21 0.18 0.043 | O | | | | 1.03

22.333 0.17 0.19 0.043 | O | | | | 1.03

22.417 0.14 0.18 0.043 |IO | | | | 1.03

22.500 0.14 0.17 0.043 |IO | | | | 1.03

22.583 0.14 0.17 0.043 |IO | | | | 1.02

22.667 0.14 0.16 0.043 |O | | | | 1.02

22.750 0.14 0.16 0.043 |O | | | | 1.02

22.833 0.14 0.15 0.042 |O | | | | 1.02

22.917 0.14 0.15 0.042 |O | | | | 1.02

23.000 0.14 0.15 0.042 |O | | | | 1.02
Item Number: 1.

Page 914 of 2517 ends

23.083 0.14 0.15 0.042 |O | | | | 1.02

23.167 0.14 0.15 0.042 |O | | | | 1.02

23.250 0.14 0.15 0.042 |O | | | | 1.02

23.333 0.14 0.14 0.042 |O | | | | 1.02

23.417 0.14 0.14 0.042 |O | | | | 1.02

23.500 0.14 0.14 0.042 |O | | | | 1.02

23.583 0.14 0.14 0.042 |O | | | | 1.02

23.667 0.14 0.14 0.042 |O | | | | 1.02

23.750 0.14 0.14 0.042 |O | | | | 1.02

23.833 0.14 0.14 0.042 |O | | | | 1.02

23.917 0.14 0.14 0.042 |O | | | | 1.02

24.000 0.14 0.14 0.042 |O | | | | 1.02

24.083 0.06 0.13 0.042 IO | | | | 1.01

24.167 0.01 0.11 0.041 IO | | | | 1.00

24.250 0.00 0.10 0.041 IO | | | | 0.99

24.333 0.00 0.10 0.040 IO | | | | 0.97

24.417 0.00 0.10 0.039 IO | | | | 0.96

24.500 0.00 0.10 0.039 IO | | | | 0.94

24.583 0.00 0.09 0.038 IO | | | | 0.92

24.667 0.00 0.09 0.037 IO | | | | 0.91

24.750 0.00 0.09 0.037 IO | | | | 0.89

24.833 0.00 0.09 0.036 IO | | | | 0.88

24.917 0.00 0.09 0.035 IO | | | | 0.86

25.000 0.00 0.09 0.035 IO | | | | 0.85

25.083 0.00 0.09 0.034 IO | | | | 0.83

25.167 0.00 0.08 0.034 IO | | | | 0.82

25.250 0.00 0.08 0.033 IO | | | | 0.81

25.333 0.00 0.08 0.032 IO | | | | 0.79

25.417 0.00 0.08 0.032 O | | | | 0.78

25.500 0.00 0.08 0.031 O | | | | 0.76

25.583 0.00 0.08 0.031 O | | | | 0.75

25.667 0.00 0.08 0.030 O | | | | 0.74

25.750 0.00 0.07 0.030 O | | | | 0.73

25.833 0.00 0.07 0.029 O | | | | 0.71

25.917 0.00 0.07 0.029 O | | | | 0.70

26.000 0.00 0.07 0.028 O | | | | 0.69

26.083 0.00 0.07 0.028 O | | | | 0.68

26.167 0.00 0.07 0.027 O | | | | 0.67

26.250 0.00 0.07 0.027 O | | | | 0.66

26.333 0.00 0.07 0.026 O | | | | 0.64

26.417 0.00 0.06 0.026 O | | | | 0.63

26.500 0.00 0.06 0.026 O | | | | 0.62

26.583 0.00 0.06 0.025 O | | | | 0.61

26.667 0.00 0.06 0.025 O | | | | 0.60

26.750 0.00 0.06 0.024 O | | | | 0.59

26.833 0.00 0.06 0.024 O | | | | 0.58

26.917 0.00 0.06 0.023 O | | | | 0.57

27.000 0.00 0.06 0.023 O | | | | 0.56

27.083 0.00 0.06 0.023 O | | | | 0.55

27.167 0.00 0.06 0.022 O | | | | 0.54
Item Number: 1.

Page 915 of 2517 ends

27.250 0.00 0.05 0.022 O | | | | 0.53

27.333 0.00 0.05 0.022 O | | | | 0.52

27.417 0.00 0.05 0.021 O | | | | 0.52

27.500 0.00 0.05 0.021 O | | | | 0.51

27.583 0.00 0.05 0.020 O | | | | 0.50

27.667 0.00 0.05 0.020 O | | | | 0.49

27.750 0.00 0.05 0.020 O | | | | 0.48

27.833 0.00 0.05 0.019 O | | | | 0.47

27.917 0.00 0.05 0.019 O | | | | 0.47

28.000 0.00 0.05 0.019 O | | | | 0.46

28.083 0.00 0.05 0.018 O | | | | 0.45

28.167 0.00 0.05 0.018 O | | | | 0.44

28.250 0.00 0.04 0.018 O | | | | 0.43

28.333 0.00 0.04 0.018 O | | | | 0.43

28.417 0.00 0.04 0.017 O | | | | 0.42

28.500 0.00 0.04 0.017 O | | | | 0.41

28.583 0.00 0.04 0.017 O | | | | 0.41

28.667 0.00 0.04 0.016 O | | | | 0.40

28.750 0.00 0.04 0.016 O | | | | 0.39

28.833 0.00 0.04 0.016 O | | | | 0.39

28.917 0.00 0.04 0.016 O | | | | 0.38

29.000 0.00 0.04 0.015 O | | | | 0.37

29.083 0.00 0.04 0.015 O | | | | 0.37

29.167 0.00 0.04 0.015 O | | | | 0.36

29.250 0.00 0.04 0.015 O | | | | 0.35

29.333 0.00 0.04 0.014 O | | | | 0.35

29.417 0.00 0.03 0.014 O | | | | 0.34

29.500 0.00 0.03 0.014 O | | | | 0.34

29.583 0.00 0.03 0.014 O | | | | 0.33

29.667 0.00 0.03 0.013 O | | | | 0.32

29.750 0.00 0.03 0.013 O | | | | 0.32

29.833 0.00 0.03 0.013 O | | | | 0.31

29.917 0.00 0.03 0.013 O | | | | 0.31

30.000 0.00 0.03 0.012 O | | | | 0.30

30.083 0.00 0.03 0.012 O | | | | 0.30

30.167 0.00 0.03 0.012 O | | | | 0.29

30.250 0.00 0.03 0.012 O | | | | 0.29

30.333 0.00 0.03 0.012 O | | | | 0.28

30.417 0.00 0.03 0.011 O | | | | 0.28

30.500 0.00 0.03 0.011 O | | | | 0.27

30.583 0.00 0.03 0.011 O | | | | 0.27

30.667 0.00 0.03 0.011 O | | | | 0.26

30.750 0.00 0.03 0.011 O | | | | 0.26

30.833 0.00 0.03 0.010 O | | | | 0.26

30.917 0.00 0.03 0.010 O | | | | 0.25

31.000 0.00 0.03 0.010 O | | | | 0.25

31.083 0.00 0.02 0.010 O | | | | 0.24

31.167 0.00 0.02 0.010 O | | | | 0.24

31.250 0.00 0.02 0.010 O | | | | 0.23

31.333 0.00 0.02 0.009 O | | | | 0.23
Item Number: 1.

Page 916 of 2517 ends

31.417 0.00 0.02 0.009 O | | | | 0.23

31.500 0.00 0.02 0.009 O | | | | 0.22

31.583 0.00 0.02 0.009 O | | | | 0.22

31.667 0.00 0.02 0.009 O | | | | 0.22

31.750 0.00 0.02 0.009 O | | | | 0.21

31.833 0.00 0.02 0.009 O | | | | 0.21

31.917 0.00 0.02 0.008 O | | | | 0.20

32.000 0.00 0.02 0.008 O | | | | 0.20

32.083 0.00 0.02 0.008 O | | | | 0.20

32.167 0.00 0.02 0.008 O | | | | 0.19

32.250 0.00 0.02 0.008 O | | | | 0.19

32.333 0.00 0.02 0.008 O | | | | 0.19

32.417 0.00 0.02 0.008 O | | | | 0.18

32.500 0.00 0.02 0.007 O | | | | 0.18

32.583 0.00 0.02 0.007 O | | | | 0.18

32.667 0.00 0.02 0.007 O | | | | 0.18

32.750 0.00 0.02 0.007 O | | | | 0.17

32.833 0.00 0.02 0.007 O | | | | 0.17

32.917 0.00 0.02 0.007 O | | | | 0.17

33.000 0.00 0.02 0.007 O | | | | 0.16

33.083 0.00 0.02 0.007 O | | | | 0.16

33.167 0.00 0.02 0.006 O | | | | 0.16

33.250 0.00 0.02 0.006 O | | | | 0.16

33.333 0.00 0.02 0.006 O | | | | 0.15

33.417 0.00 0.02 0.006 O | | | | 0.15

33.500 0.00 0.02 0.006 O | | | | 0.15

33.583 0.00 0.01 0.006 O | | | | 0.15

33.667 0.00 0.01 0.006 O | | | | 0.14

33.750 0.00 0.01 0.006 O | | | | 0.14

33.833 0.00 0.01 0.006 O | | | | 0.14

33.917 0.00 0.01 0.006 O | | | | 0.14

34.000 0.00 0.01 0.005 O | | | | 0.13

34.083 0.00 0.01 0.005 O | | | | 0.13

34.167 0.00 0.01 0.005 O | | | | 0.13

34.250 0.00 0.01 0.005 O | | | | 0.13

34.333 0.00 0.01 0.005 O | | | | 0.12

34.417 0.00 0.01 0.005 O | | | | 0.12

34.500 0.00 0.01 0.005 O | | | | 0.12

34.583 0.00 0.01 0.005 O | | | | 0.12

34.667 0.00 0.01 0.005 O | | | | 0.12

34.750 0.00 0.01 0.005 O | | | | 0.11

34.833 0.00 0.01 0.005 O | | | | 0.11

34.917 0.00 0.01 0.005 O | | | | 0.11

35.000 0.00 0.01 0.004 O | | | | 0.11

35.083 0.00 0.01 0.004 O | | | | 0.11

35.167 0.00 0.01 0.004 O | | | | 0.10

35.250 0.00 0.01 0.004 O | | | | 0.10

35.333 0.00 0.01 0.004 O | | | | 0.10

35.417 0.00 0.01 0.004 O | | | | 0.10

35.500 0.00 0.01 0.004 O | | | | 0.10
Item Number: 1.

Page 917 of 2517 ends

35.583 0.00 0.01 0.004 O | | | | 0.10

35.667 0.00 0.01 0.004 O | | | | 0.09

35.750 0.00 0.01 0.004 O | | | | 0.09

35.833 0.00 0.01 0.004 O | | | | 0.09

35.917 0.00 0.01 0.004 O | | | | 0.09

36.000 0.00 0.01 0.004 O | | | | 0.09

36.083 0.00 0.01 0.004 O | | | | 0.09

36.167 0.00 0.01 0.003 O | | | | 0.09

36.250 0.00 0.01 0.003 O | | | | 0.08

36.333 0.00 0.01 0.003 O | | | | 0.08

36.417 0.00 0.01 0.003 O | | | | 0.08

36.500 0.00 0.01 0.003 O | | | | 0.08

36.583 0.00 0.01 0.003 O | | | | 0.08

36.667 0.00 0.01 0.003 O | | | | 0.08

36.750 0.00 0.01 0.003 O | | | | 0.08

36.833 0.00 0.01 0.003 O | | | | 0.07

36.917 0.00 0.01 0.003 O | | | | 0.07

37.000 0.00 0.01 0.003 O | | | | 0.07

37.083 0.00 0.01 0.003 O | | | | 0.07

37.167 0.00 0.01 0.003 O | | | | 0.07

37.250 0.00 0.01 0.003 O | | | | 0.07

37.333 0.00 0.01 0.003 O | | | | 0.07

37.417 0.00 0.01 0.003 O | | | | 0.07

37.500 0.00 0.01 0.003 O | | | | 0.06

37.583 0.00 0.01 0.003 O | | | | 0.06

37.667 0.00 0.01 0.003 O | | | | 0.06

37.750 0.00 0.01 0.003 O | | | | 0.06

37.833 0.00 0.01 0.002 O | | | | 0.06

37.917 0.00 0.01 0.002 O | | | | 0.06

38.000 0.00 0.01 0.002 O | | | | 0.06

38.083 0.00 0.01 0.002 O | | | | 0.06

38.167 0.00 0.01 0.002 O | | | | 0.06

38.250 0.00 0.01 0.002 O | | | | 0.06

38.333 0.00 0.01 0.002 O | | | | 0.05

38.417 0.00 0.01 0.002 O | | | | 0.05

38.500 0.00 0.01 0.002 O | | | | 0.05

38.583 0.00 0.01 0.002 O | | | | 0.05

38.667 0.00 0.01 0.002 O | | | | 0.05

38.750 0.00 0.01 0.002 O | | | | 0.05

38.833 0.00 0.01 0.002 O | | | | 0.05

38.917 0.00 0.00 0.002 O | | | | 0.05

39.000 0.00 0.00 0.002 O | | | | 0.05

39.083 0.00 0.00 0.002 O | | | | 0.05

39.167 0.00 0.00 0.002 O | | | | 0.05

39.250 0.00 0.00 0.002 O | | | | 0.05

39.333 0.00 0.00 0.002 O | | | | 0.04

39.417 0.00 0.00 0.002 O | | | | 0.04

39.500 0.00 0.00 0.002 O | | | | 0.04

39.583 0.00 0.00 0.002 O | | | | 0.04

39.667 0.00 0.00 0.002 O | | | | 0.04
Item Number: 1.

Page 918 of 2517 ends

39.750 0.00 0.00 0.002 O | | | | 0.04

39.833 0.00 0.00 0.002 O | | | | 0.04

39.917 0.00 0.00 0.002 O | | | | 0.04

40.000 0.00 0.00 0.002 O | | | | 0.04

40.083 0.00 0.00 0.002 O | | | | 0.04

40.167 0.00 0.00 0.002 O | | | | 0.04

40.250 0.00 0.00 0.002 O | | | | 0.04

40.333 0.00 0.00 0.001 O | | | | 0.04

40.417 0.00 0.00 0.001 O | | | | 0.04

40.500 0.00 0.00 0.001 O | | | | 0.04

40.583 0.00 0.00 0.001 O | | | | 0.03

40.667 0.00 0.00 0.001 O | | | | 0.03

40.750 0.00 0.00 0.001 O | | | | 0.03

40.833 0.00 0.00 0.001 O | | | | 0.03

40.917 0.00 0.00 0.001 O | | | | 0.03

41.000 0.00 0.00 0.001 O | | | | 0.03

41.083 0.00 0.00 0.001 O | | | | 0.03

41.167 0.00 0.00 0.001 O | | | | 0.03

41.250 0.00 0.00 0.001 O | | | | 0.03

41.333 0.00 0.00 0.001 O | | | | 0.03

41.417 0.00 0.00 0.001 O | | | | 0.03

41.500 0.00 0.00 0.001 O | | | | 0.03

41.583 0.00 0.00 0.001 O | | | | 0.03

41.667 0.00 0.00 0.001 O | | | | 0.03

41.750 0.00 0.00 0.001 O | | | | 0.03

41.833 0.00 0.00 0.001 O | | | | 0.03

41.917 0.00 0.00 0.001 O | | | | 0.03

42.000 0.00 0.00 0.001 O | | | | 0.03

42.083 0.00 0.00 0.001 O | | | | 0.03

42.167 0.00 0.00 0.001 O | | | | 0.02

42.250 0.00 0.00 0.001 O | | | | 0.02

42.333 0.00 0.00 0.001 O | | | | 0.02

42.417 0.00 0.00 0.001 O | | | | 0.02

42.500 0.00 0.00 0.001 O | | | | 0.02

42.583 0.00 0.00 0.001 O | | | | 0.02

42.667 0.00 0.00 0.001 O | | | | 0.02

42.750 0.00 0.00 0.001 O | | | | 0.02

42.833 0.00 0.00 0.001 O | | | | 0.02

42.917 0.00 0.00 0.001 O | | | | 0.02

43.000 0.00 0.00 0.001 O | | | | 0.02

43.083 0.00 0.00 0.001 O | | | | 0.02

43.167 0.00 0.00 0.001 O | | | | 0.02

43.250 0.00 0.00 0.001 O | | | | 0.02

43.333 0.00 0.00 0.001 O | | | | 0.02

43.417 0.00 0.00 0.001 O | | | | 0.02

43.500 0.00 0.00 0.001 O | | | | 0.02

43.583 0.00 0.00 0.001 O | | | | 0.02

43.667 0.00 0.00 0.001 O | | | | 0.02

43.750 0.00 0.00 0.001 O | | | | 0.02

43.833 0.00 0.00 0.001 O | | | | 0.02
Item Number: 1.

Page 919 of 2517 ends

43.917 0.00 0.00 0.001 O | | | | 0.02

44.000 0.00 0.00 0.001 O | | | | 0.02

44.083 0.00 0.00 0.001 O | | | | 0.02

44.167 0.00 0.00 0.001 O | | | | 0.02

44.250 0.00 0.00 0.001 O | | | | 0.02

44.333 0.00 0.00 0.001 O | | | | 0.02

44.417 0.00 0.00 0.001 O | | | | 0.02

44.500 0.00 0.00 0.001 O | | | | 0.02

44.583 0.00 0.00 0.001 O | | | | 0.02

44.667 0.00 0.00 0.001 O | | | | 0.01

44.750 0.00 0.00 0.001 O | | | | 0.01

44.833 0.00 0.00 0.001 O | | | | 0.01

44.917 0.00 0.00 0.001 O | | | | 0.01

45.000 0.00 0.00 0.001 O | | | | 0.01

45.083 0.00 0.00 0.001 O | | | | 0.01

45.167 0.00 0.00 0.001 O | | | | 0.01

45.250 0.00 0.00 0.001 O | | | | 0.01

45.333 0.00 0.00 0.001 O | | | | 0.01

45.417 0.00 0.00 0.001 O | | | | 0.01

45.500 0.00 0.00 0.001 O | | | | 0.01

45.583 0.00 0.00 0.001 O | | | | 0.01

45.667 0.00 0.00 0.000 O | | | | 0.01

45.750 0.00 0.00 0.000 O | | | | 0.01

45.833 0.00 0.00 0.000 O | | | | 0.01

45.917 0.00 0.00 0.000 O | | | | 0.01

46.000 0.00 0.00 0.000 O | | | | 0.01

46.083 0.00 0.00 0.000 O | | | | 0.01

46.167 0.00 0.00 0.000 O | | | | 0.01

46.250 0.00 0.00 0.000 O | | | | 0.01

46.333 0.00 0.00 0.000 O | | | | 0.01

46.417 0.00 0.00 0.000 O | | | | 0.01

46.500 0.00 0.00 0.000 O | | | | 0.01

46.583 0.00 0.00 0.000 O | | | | 0.01

46.667 0.00 0.00 0.000 O | | | | 0.01

46.750 0.00 0.00 0.000 O | | | | 0.01
****************************HYDROGRAPH DATA**************************** Number of intervals = 561
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 1.833 (CFS)
Total volume = 1.483 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** -------------------------------------------------------------------- Item Number: 1.

Page 920 of 2517 ends

9 | P a g e

HYDROLOGY MAP
Pre-Development Exhibit
Post Development Exhibit
Item Number: 1.

Page 921 of 2517 ends

PP PP PP PP CITY OF DESERT HOT SPRINGS DESERT HOT SPRINGS COMMERCIAL DEVELOPMENT A NGE L C E SA R ST C I V I L ATE OF CA L I FORN I A REG I STERED PROFESS IONAL ENG I NEER No. 87222 LDP: CUP: BEYOND FOODS MARKET 9320 BASELINE RD. STE. D - RANCHO CUCAMONGA, CA 91701 PHONE: 909-248-6557 - [email protected] WWW.BLUECIVILENG.COM CONDITIONAL USE PERMIT Item Number: 1.

Page 922 of 2517 ends

PP (1180) (1185) (1190) (1190) (1190) (1185) (1185)
(1180)
(1180) PP PP PP PP T
EV
NO

PARKING NO PARKING

EV TLOADING ZONE LOADING ZONE
NO

PARKING T
NO

PARKING EV EV
NO
PARKING CITY OF DESERT HOT SPRINGS DESERT HOT SPRINGS COMMERCIAL DEVELOPMENT A NGE L C E SA R ST C I V I L ATE OF CA L I FORN I A REG I STERED PROFESS IONAL ENG I NEER No. 87222 LDP: CUP: BEYOND FOODS MARKET 9320 BASELINE RD. STE. D - RANCHO CUCAMONGA, CA 91701 PHONE: 909-248-6557 - [email protected] WWW.BLUECIVILENG.COM CONDITIONAL USE PERMIT Item Number: 1.

Page 923 of 2517 ends

!
"

#$%&'()&&(*+,-
./'(/+'0+'%&'12/$,3&'4 '&/3$/*2+0-+'+5%3/3
6789:;<=>=?8@:8AB?7CD>
EF?GHIJKILIM
N=O7>=PQRDR>8ISKILIM
Item Number: 1.

Page 924 of 2517 ends

BEYOND FOOD MART
(INDIAN CANYON & PIERSON)

NOISE IMPACT ANALYSIS
City of Desert Hot Springs
March 27, 2023
Revised August 21, 2023
prepared by
Roma Stromberg, INCE, MS
Catherine Howe, MS
GANDDINI GROUP INC.
555 Park Center Drive, Suite 225
Santa Ana, California 92705
(714) 795-3100 | ganddini.com Project No. 19543
Item Number: 1.

Page 925 of 2517 ends

Beyond Food Mart (Indian Canyon & Pierson)
Noise Impact Analysis
i 19543

TABLE OF CONTENTS
EXECUTIVE SUMMARY ................................................................................................................................................. III

1. INTRODUCTION .................................................................................................................................................... 1 Purpose and Objectives ................................................................................................................................................. 1 Project Location ............................................................................................................................................................... 1 Project Description .......................................................................................................................................................... 1

2. NOISE AND VIBRATION FUNDAMENTALS .................................................................................................. 4 Noise Fundamentals ....................................................................................................................................................... 4 Vibration Fundamentals ................................................................................................................................................. 4

3. EXISTING NOISE ENVIRONMENT .................................................................................................................... 8 Existing Land Uses and Sensitive Receptors ............................................................................................................ 8 Ambient Noise Measurements ..................................................................................................................................... 8

4. REGULATORY SETTING .................................................................................................................................... 13 Federal Regulation ........................................................................................................................................................ 13 Federal Noise Control Act of 1972 ............................................................................................................. 13 State Regulations .......................................................................................................................................................... 13 State of California General Plan Guidelines 2017 ................................................................................... 13 Department of Transportation ...................................................................................................................... 13 Local Regulations .......................................................................................................................................................... 14 City of Desert Hot Springs General Plan .................................................................................................... 14 City of Desert Hot Springs Municipal Code .............................................................................................. 15

5. ANALYTICAL METHODOLOGY AND MODEL PARAMETERS................................................................ 20 Construction Noise Modeling ................................................................................................................................... 20 Stationary Source/Operational Noise Modeling .................................................................................................. 20 Mobile Source Noise Modeling ................................................................................................................................. 22 Groundborne Vibration Modeling ............................................................................................................................ 22

6. NOISE AND VIBRATION IMPACTS ................................................................................................................ 28 NOISE IMPACTS ............................................................................................................................................................... 28 Construction Noise ........................................................................................................................................... 28 Stationary Source Noise .................................................................................................................................. 29 Mobile Source Noise ........................................................................................................................................ 29 Groundborne Vibration Impacts ............................................................................................................................... 30 Air Traffic Impacts ........................................................................................................................................................ 31

7. REFERENCES ......................................................................................................................................................... 35

Appendices
Appendix A List of Acronyms
Appendix B Glossary
Appendix C Noise Measurement Field Worksheets
Appendix D Construction Noise Calculations
Appendix E SoundPLAN Worksheets
Appendix F FHWA Worksheets
Appendix G Vibration Worksheets
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List of Tables
Table 1. Short-Term Noise Measurement Summary (dBA).................................................................................... 10 Table 2. Long-Term Noise Measurement Summary (LTNM1) (dBA) .................................................................. 11 Table 3. Guideline Vibration Damage Potential Threshold Criteria ..................................................................... 17 Table 4. Guideline Vibration Annoyance Potential Criteria ................................................................................... 18 Table 5. Noise and Land Use Compatibility Guidelines .......................................................................................... 19 Table 6. CA/T Equipment Noise Emissions and Acoustical Usage Factor Database ...................................... 24 Table 7. Project Average Daily Traffic Volumes and Roadway Parameters ...................................................... 26 Table 8. Construction Equipment Vibration Source Levels ................................................................................... 27 Table 9. Construction Noise Levels (dBA Leq) .......................................................................................................... 32 Table 10. Increase in Existing Noise Levels Along Roadways as a Result of Project (dBA CNEL) ................. 33 List of Figures
Figure 1. Project Location Map .......................................................................................................................................... 2 Figure 2. Site Plan .................................................................................................................................................................. 3 Figure 3. A-Weighted Comparative Sound Levels ........................................................................................................ 6 Figure 4. Typical Levels of Groundborne Vibration ...................................................................................................... 7 Figure 5. Noise Measurement Location Map .............................................................................................................. 12 Figure 6. Operational Noise Levels ................................................................................................................................ 34 Item Number: 1.

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EXECUTIVE SUMMARY
The approximately 3.99-acre project site is located at the northwest corner of the intersection of Indian Canyon Drive and Pierson Boulevard in the City of Desert Hot Springs, California. The project site is currently undeveloped and zoned MU-N (Mixed Use – Neighborhood).

The proposed project involves the construction of a 7,460 square foot convenience store gas station with eight (8) dual-sided fuel pumps (i.e., 16-vehicle fueling positions), an automatic car wash tunnel, and a-2,000 square foot quick-service restaurants with drive-through window. Vehicular access is proposed to be provided by two driveways onto Indian Canyon Drive and one driveway onto Pierson Boulevard.

Existing Noise Environment
The project site is adjacent to land zoned Mixed-Use District (MU-N) to the northeast and west. Property south of the site is located within the jurisdiction of the County of Riverside and is zoned *****. Sensitive receptors in the vicinity of the project that may or may not be occupied at the time this study was prepared include single-family land uses located approximately 610 feet to the east, 1,348 feet to the southwest (along Paseo Yucca Vista), 1,990 feet to the west/northwest (along Western Avenue), 1,632 feet to the northwest (along Scenic Drive), 2,355 feet to the east (along Desert Terrace Way) of the project site. In addition, a church use is located approximately 2,667 feet to the southeast of the project site (along Pierson Boulevard).

Noise measurements were collected at seven locations to document existing ambient noise levels in the project area (see Figure 5, Table 1 and Table 2).

Construction Noise Impacts
Project construction will not occur outside of the hours outlined in Section 9.04.030 of the City of Desert Hot Springs Municipal Code. Therefore, the project would not exceed City-established standards relating to construction noise. The project impact is less than significant; no mitigation is required.

Notwithstanding the above, best management practices (BMPs) are provided in the Project Description and should be added to project plans and in contract specifications to minimize construction noise emanating from the proposed project.

Operational Noise Impacts
As currently proposed, project operational noise would range between 28 and 63 dBA Leq at the property lines of modeled receptors and would not exceed the City’s exterior noise ordinance standard of 65 dBA Leq at any adjacent or nearby property. Considering that future residential construction will provide approximately 20 dB of exterior to interior noise reduction, project operational noise will also not exceed the City’s 45 dBA Leq noise standard. No mitigation measures are required.

Groundborne Vibration Impacts
Groundborne vibration generated by project construction would not exceed the levels necessary to cause architectural damage or severe annoyance to persons living or working in nearby buildings. The project impact is less than significant; no mitigation is required.

Air Traffic Impacts
The project site is located well outside the 60 dBA CNEL noise contour for the Palm Springs International Airport. Therefore, the project would not expose people residing or working in the project area to excessive noise levels associated with airports. The impact would be less than significant; no mitigation is required.

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1. INTRODUCTION

PURPOSE AND OBJECTIVES
The purpose of this report is to provide an assessment of the noise impacts resulting from development of the proposed project and to identify mitigation measures that may be necessary to reduce those impacts. The noise issues related to the proposed land use and development have been evaluated in light of applicable federal, state and local policies, including those of the City of Desert Hot Springs, in the context of the California Environmental Quality Act (CEQA).

Although this is a technical report, effort has been made to write the report clearly and concisely. A list of acronyms and glossary are provided in Appendix A and Appendix B of this report to assist the reader with technical terms related to noise and vibration analysis.

PROJECT LOCATION
The approximately 3.99-acre project site is located at the northwest corner of the intersection of Indian Canyon Drive and Pierson Boulevard in the City of Desert Hot Springs, California. The project site is currently undeveloped and zoned MU-N (Mixed Use – Neighborhood). A vicinity map showing the project location is provided on Figure 1.

PROJECT DESCRIPTION
The proposed project involves the construction of a 7,460 square foot convenience store gas station with eight (8) dual-sided fuel pumps (i.e., 16-vehicle fueling positions), an automatic car wash tunnel, and a-2,000 square foot quick-service restaurants with drive-through window. Vehicular access is proposed to be provided by two driveways onto Indian Canyon Drive and one driveway onto Pierson Boulevard. Figure 2 illustrates the project site plan.

The following best management practices (BMPs) shall be provided on project plans and in contract specifications to minimize construction noise emanating from the proposed project, however, implementation is not required for compliance with applicable sections of the City of Desert Hot Springs Municipal Code:

1. All construction equipment, whether fixed or mobile, will be equipped with properly operating and maintained mufflers, consistent with manufacturer standards.

2. All stationary construction equipment will be placed so that emitted noise is directed away from the noise sensitive receptors nearest the project site.

3. As applicable, all equipment shall be shut off and not left to idle when not in use.

4. To the degree possible, equipment staging will be located in acres that create the greatest distance between construction-related noise and vibration sources and existing sensitive receptors.

5. Jackhammers, pneumatic equipment, and all other portable stationary noise sources will be directed away and shielded from existing residences in the vicinity of the project site. Either one-inch plywood or sound blankets can be utilized for this purpose. They should reach up from the ground and block the line of sight between equipment and existing residences. The shielding should be without holes and cracks.

6. No amplified music and/or voice will be allowed on the project site.

7. Haul truck deliveries will not occur outside of the hours presented as exempt for construction per City of Desert Hot Springs Municipal Code Section 9.04.030.
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Figure 1
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Figure 2
Site Plan
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2. NOISE AND VIBRATION FUNDAMENTALS
This section provides an overview of key noise and vibration concepts.

NOISE FUNDAMENTALS
Sound is a pressure wave created by a moving or vibrating source that travels through an elastic medium such as air. Noise is defined as unwanted or objectionable sound. The effects of noise on people can include general annoyance, interference with speech communication, sleep disturbance, and in extreme circumstances, hearing impairment.

Commonly used noise terms are presented in Appendix B. The unit of measurement used to describe a noise level is the decibel (dB). The human ear is not equally sensitive to all frequencies within the sound spectrum.

Therefore, the “A-weighted” noise scale, which weights the frequencies to which humans are sensitive, is used for measurements. Noise levels using A-weighted measurements are written dB(A) or dBA.

From the noise source to the receiver, noise changes both in level and frequency spectrum. The most obvious is the decrease in noise as the distance from the source increases. The manner in which noise reduces with distance depends on whether the source is a point or line source as well as ground absorption, atmospheric effects and refraction, and shielding by natural and manmade features. Sound from point sources, such as air conditioning condensers, radiates uniformly outward as it travels away from the source in a spherical pattern.

The noise drop-off rate associated with this geometric spreading is 6 dBA per each doubling of the distance (dBA/DD). Transportation noise sources such as roadways are typically analyzed as line sources, since at any given moment the receiver may be impacted by noise from multiple vehicles at various locations along the roadway. Because of the geometry of a line source, the noise drop-off rate associated with the geometric spreading of a line source is 3 dBA/DD.

Decibels are measured on a logarithmic scale, which quantifies sound intensity in a manner similar to the Richter scale used for earthquake magnitudes. Thus, a doubling of the energy of a noise source, such as a doubled traffic volume, would increase the noise levels by 3 dBA; halving of the energy would result in a 3 dBA decrease. Figure 3 shows the relationship of various noise levels to commonly experienced noise events.

Average noise levels over a period of minutes or hours are usually expressed as dBA Leq, or the equivalent noise level for that period of time. For example, Leq(3-hr) would represent a 3-hour average. When no period is specified, a one-hour average is assumed.

Noise standards for land use compatibility are stated in terms of the Community Noise Equivalent Level (CNEL) and the Day-Night Average Noise Level (DNL). CNEL is a 24-hour weighted average measure of community noise. CNEL is obtained by adding five decibels to sound levels in the evening (7:00 PM to 10:00 PM), and by adding ten decibels to sound levels at night (10:00 PM to 7:00 AM). This weighting accounts for the increased human sensitivity to noise during the evening and nighttime hours. DNL is a very similar 24- hour average measure that weighs only the nighttime hours.

It is widely accepted that the average healthy ear can barely perceive changes of 3 dBA; that a change of 5 dBA is readily perceptible, and that an increase (decrease) of 10 dBA sounds twice (half) as loud. This definition is recommended by the California Department of Transportation’s Technical Noise Supplement to the Traffic Noise Analysis Protocol (2013).

VIBRATION FUNDAMENTALS
The way in which vibration is transmitted through the earth is called propagation. Propagation of earthborn vibrations is complicated and difficult to predict because of the endless variations in the soil through which waves travel. There are three main types of vibration propagation: surface, compression and shear waves. 4 Item Number: 1.

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Surface waves, or Rayleigh waves, travel along the ground’s surface. These waves carry most of their energy along an expanding circular wave front, similar to ripples produced by throwing a rock into a pool of water.

Compression waves, or P-waves, are body waves that carry their energy along an expanding spherical wave front. The particle motion in these waves is longitudinal (i.e., in a “push-pull” fashion). P-waves are analogous to airborne sound waves. Shear waves, or S-waves, are also body waves that carry energy along an expanding spherical wave front. However, unlike P-waves, the particle motion is transverse or “side-to-side and perpendicular to the direction of propagation”.

As vibration waves propagate from a source, the energy is spread over an ever-increasing area such that the energy level striking a given point is reduced with the distance from the energy source. This geometric spreading loss is inversely proportional to the square of the distance. Wave energy is also reduced with distance as a result of material damping in the form of internal friction, soil layering, and void spaces. The amount of attenuation provided by material damping varies with soil type and condition as well as the frequency of the wave.

Vibration amplitudes are usually expressed as either peak particle velocity (PPV) or the root mean square (RMS) velocity. The PPV is defined as the maximum instantaneous peak of the vibration signal in inches per second. The RMS of a signal is the average of the squared amplitude of the signal in vibration decibels (VdB), ref one micro-inch per second. The Federal Railroad Administration uses the abbreviation “VdB” for vibration decibels to reduce the potential for confusion with sound decibel.

PPV is appropriate for evaluating the potential of building damage and VdB is commonly used to evaluate human response. Decibel notation acts to compress the range of numbers required in measuring vibration.

Similar to the noise descriptors, Leq and Lmax can be used to describe the average vibration and the maximum vibration level observed during a single vibration measurement interval. Figure 4 illustrates common vibration sources and the human and structural responses to ground-borne vibration. As shown in the figure, the threshold of perception for human response is approximately 65 VdB; however, human response to vibration is not usually substantial unless the vibration exceeds 70 VdB. Vibration tolerance limits for sensitive instruments such as magnetic resonance imaging (MRI) or electron microscopes could be much lower than the human vibration perception threshold.
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Figure 3
A-Weighted Comparative Sound Levels
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© Ganddini Group, Inc.

Based on Policy & Guidance from Federal Aviation Administration 6 Item Number: 1.

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Figure 4
Typical Levels of Groundborne Vibration
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Source: FRA, 2012. Federal Railroad Administration High-Speed Ground Transportation Noise and Vibration Impact Assessment. Office of Railroad Policy Development, Washington, D.C. DOT/FRA/ORD-12/15. September. 7 Item Number: 1.

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3. EXISTING NOISE ENVIRONMENT
This section describes the existing noise setting in the project vicinity.

EXISTING LAND USES AND SENSITIVE RECEPTORS
The project site is bordered by vacant land to the north and west; Indian Canyon Drive to the east; and Pierson Boulevard to the south.

The State of California defines sensitive receptors as those land uses that require serenity or are otherwise adversely affected by noise events or conditions. Schools, libraries, churches, hospitals, single and multiplefamily residential, including transient lodging, motels and hotel uses make up the majority of these areas.

Sensitive land uses that may be affected by project noise include the include existing single-family land uses located approximately 610 feet to the east, 1,348 feet to the southwest (along Paseo Yucca Vista), 1,990 feet to the west/northwest (along Western Avenue), 1,632 feet to the northwest (along Scenic Drive), 2,355 feet to the east (along Desert Terrace Way) of the project site. In addition, a church use is located approximately 2,667 feet to the southeast of the project site (along Pierson Boulevard).

AMBIENT NOISE MEASUREMENTS
An American National Standards Institute (ANSI Section S1.4 2014 Class 1) Larson Davis model LxT sound level meter was used to document existing ambient noise levels. In order to document existing ambient noise levels in the project area, six (6) 15-minute daytime noise measurements were taken between 1:26 PM and 4:47 PM on October 27, 2022. In addition, one (1) long-term 24-hour noise measurement was also taken from October 27, 2022, to October 28, 2022. Field worksheets and noise measurement worksheets are provided in Appendix C.

As shown in Figure 5, the noise meter was placed at the following locations:
 STNM1: represents the existing noise environment of the single-family residence located to the southwest of the project site boundary on the southern side of Paseo Yucca Vista (63655 Paseo Yucca Vista, Desert Hot Springs). The noise meter was placed near the northeastern property line of the singlefamily residential use on the southern side of Paseo Yucca Vista.  STNM2: represents the existing noise environment of the single-family residential uses to the west/northwest of the project site along the eastern side of Western Avenue (11700 Western Avenue, Desert Hot Springs). The noise meter was placed near the southeastern corner of the single-family residential use.
 STNM3: represents the existing noise environment of the single-family residential use located to the northwest of the project site boundary on the northern side of Scenic Drive (63680 Scenic Drive, Desert Hot Springs). The noise meter was placed near the southeastern corner of the single-family residential use just north of Scenic Drive.
 STNM4: represents the existing noise environment of the single-family residential use located to the east of the project site boundary along Desert Terrace Way (11750 Desert Terrace Way, Desert Hot Springs).

The noise meter was placed near the northwestern corner of the single-family residence just east of Desert Terrace Way.
 STNM5: represents the existing noise environment of the church use located to the southeast of the project site along the southern side of Pierson Boulevard (64565 Pierson Boulevard, Desert Hot Springs). 8 Item Number: 1.

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The noise meter was placed along the near the northwestern corner of the church use just south of Pierson Boulevard.
 STNM6: represents the existing noise environment of the vacant land surrounding the project site to the north and west. The noise meter was placed near the northern project boundary.  LTNM1: represents the existing noise environment of the project site. The noise meter was placed in the northern portion of the project site.

Table 1 provides a summary of the short-term ambient noise data. Table 2 provides hourly interval ambient noise data from the long-term noise measurements. Measured short-term ambient noise levels ranged between 42.6 and 66 dBA Leq. Long-term hourly noise measurement ambient noise levels ranged from 50 to 61 dBA Leq. The dominant noise source in the project vicinity was vehicle traffic associated with Pierson Boulevard, Indian Canyon Drive, and other surrounding roadways. 9 Item Number: 1.

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Site Location Time Started Leq Lmax Lmin L(2) L(8) L(25) L(50) STNM1 1:26 PM 52.9 68.5 38.2 62.7 56.8 51.2 48.8
STNM2 2:00 PM 47.4 65.6 34.8 56.6 49.7 46.0 42.5
STNM3 2:37 PM 42.6 54.4 34.1 49.2 46.6 43.3 40.4
STNM4 3:13 PM 45.2 60.1 32.5 55.2 48.7 43.8 40.1
STNM5 4:32 PM 66.0 75.1 40.2 72.7 70.7 67.7 63.4
STNM6 3:56 PM 59.5 76.0 40.0 65.0 61.4 59.4 57.1
(1) See Figure 5 for noise measurement locations. Each noise measurement was performed over a 15-minute duration. (2) Noise measurements performed on October 27, 2022.

Notes:

Table 1
Short-Term Noise Measurement Summary (dBA)
Daytime Measurements1,2
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Leq Lmax Lmin L(2) L(8) L(25) L(50)
7:00 PM 57.8 86.8 23.0 64.7 61.6 58.1 53.3
7:00 PM 59.0 80.5 35.0 65.6 61.9 59.1 55.6
8:00 PM 56.8 78.6 32.8 63.8 60.8 57.5 52.7
9:00 PM 59.6 86.0 32.4 63.9 60.9 57.5 52.4
10:00 PM 56.0 79.7 29.4 62.2 59.5 56.2 51.1
11:00 PM 52.8 68.3 27.7 61.2 57.9 53.2 44.6
12:00 AM 50.8 65.5 23.7 60.6 56.9 48.3 39.0
1:00 AM 50.4 68.0 23.0 60.3 55.3 44.9 38.2
2:00 AM 50.0 67.8 24.9 60.4 55.8 45.9 37.6
3:00 AM 51.1 70.9 23.2 60.5 56.5 47.2 40.8
4:00 AM 53.5 70.7 27.5 62.7 58.8 51.4 45.0
5:00 AM 58.0 70.7 25.9 65.8 62.9 59.0 53.2
6:00 AM 59.4 72.6 39.4 66.1 63.7 60.7 56.9
7:00 AM 59.9 72.8 43.3 65.7 63.6 61.1 58.3
8:00 AM 57.5 78.0 35.0 64.0 60.6 58.1 54.5
9:00 AM 56.0 76.8 35.3 62.6 60.3 57.1 52.5
10:00 AM 58.0 80.8 32.5 65.0 61.2 57.9 54.0
11:00 AM 56.7 72.9 38.5 63.6 60.6 57.5 53.4
12:00 PM 57.0 76.4 37.2 64.0 60.9 58.0 54.1
1:00 PM 58.3 79.8 34.4 64.3 61.0 58.2 54.5
2:00 PM 59.8 86.8 38.6 63.7 61.0 58.3 55.4
3:00 PM 59.6 81.2 38.2 66.1 61.9 59.2 56.7
4:00 PM 60.3 79.0 42.7 67.6 62.6 60.1 57.6
5:00 PM 60.4 82.3 43.9 66.0 62.5 60.0 57.9
6:00 PM 61.0 75.8 47.0 66.5 64.3 62.0 59.8
(1)
(2)
Notes:

See Figure 5 for noise measurement locations. Noise measurement was performed over a 24-hour duration.

Noise measurement performed from October 27, 2022 to October 28, 2022. 19 20
21 22
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Long-Term Noise Measurement Summary (LTNM1) (dBA)
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4. REGULATORY SETTING
This section documents the regulatory framework and applicable noise standards.

FEDERAL REGULATION
Federal Noise Control Act of 1972
The U.S. Environmental Protection Agency (EPA) Office of Noise Abatement and Control was originally established to coordinate federal noise control activities. After its inception, EPA’s Office of Noise Abatement and Control issued the Federal Noise Control Act of 1972, establishing programs and guidelines to identify and address the effects of noise on public health, welfare, and the environment. In response, the EPA published Information on Levels of Environmental Noise Requisite to Protect Public Health and Welfare with an Adequate Margin of Safety (Levels of Environmental Noise). The Levels of Environmental Noise recommended that the Ldn should not exceed 55 dBA outdoors or 45 dBA indoors to prevent significant activity interference and annoyance in noise-sensitive areas.

In 1981, EPA administrators determined that subjective issues such as noise would be better addressed at lower levels of government. Consequently, in 1982 responsibilities for regulating noise control policies were transferred to State and local governments. However, noise control guidelines and regulations contained in EPA rulings in prior years remain in place by designated Federal agencies, allowing more individualized control for specific issues by designated Federal, State, and local government agencies.

STATE REGULATIONS
State of California General Plan Guidelines 2017
Though not adopted by law, the State of California General Plan Guidelines 2017, published by the California Governor’s Office of Planning and Research (OPR) (OPR Guidelines), provides guidance for the compatibility of projects within areas of specific noise exposure. The OPR Guidelines identify the suitability of various types of construction relative to a range of outdoor noise levels and provide each local community some flexibility in setting local noise standards that allow for the variability in community preferences. Findings presented in the Levels of Environmental Noise Document (EPA 1974) influenced the recommendations of the OPR Guidelines, most importantly in the choice of noise exposure metrics (i.e., Ldn or CNEL) and in the upper limits for the normally acceptable outdoor exposure of noise-sensitive uses.

The OPR Guidelines include a Noise and Land Use Compatibility Matrix which identifies acceptable and unacceptable community noise exposure limits for various land use categories. Where the “normally acceptable” range is used, it is defined as the highest noise level that should be considered for the construction of the buildings which do not incorporate any special acoustical treatment or noise mitigation. The “conditionally acceptable” or “normally unacceptable” ranges include conditions calling for detailed acoustical study prior to the construction or operation of the proposed project. The City of Desert Hot Springs has adopted its own version of land use compatibility guidelines (discussed further in Local Regulations below).

Department of Transportation
The California Department of Transportation (Caltrans) has developed several publications on groundborne vibration. The Transportation and Construction Vibration Guidance Manual (Caltrans, 2020) provides informational content that supplements previous publications with improved knowledge and information relating to groundborne transportation- and construction-induced vibrations. Although the Transportation and Construction Vibration Guidance Manual is not an official policy, standard, specification, or regulation, it serves as a useful guide for evaluating vibration impacts.
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Table 3 and Table 4 show the guideline criteria for potential damage and annoyance resulting from groundborne vibration. As shown in Table 3, these guidelines recommend that the threshold at which there is a risk of architectural damage is a peak particle velocity (PPV) of 0.25 inches/second (in/sec) for historic buildings, PPV of 0.3 in/sec at older residential structures, and a PPV of 0.5 in/sec at new residential structures and modern commercial/industrial buildings. Table 4 shows that a PPV of 0.4 in/sec is the threshold at which groundborne vibration becomes severe in regard to annoyance (Caltrans, 2020).

LOCAL REGULATIONS
City of Desert Hot Springs General Plan
Table 5 shows the Noise and Land Use Compatibility Guidelines presented in the City of Desert Hot Springs General Plan (2020), which establish outdoor noise standards for various land uses within the City.

The City of Desert Hot Springs General Plan (May 2020) Safety and Noise Element includes the following goals and policies in regard to noise which apply to the proposed project.

Goal SN-8 A noise environment that provides peace and quiet that complements the City’s spa resort character.

Policy SN-8.1 Sensitive Land Uses. Protect noise-sensitive land uses from high noise levels from both existing and future noise sources. Sensitive uses include residences, resorts and community open space, schools, libraries, churches, hospitals, and convalescent homes.

Policy SN-8.2 Noise Impacts. Assess proposed development and associated traffic for the potential to generate adverse and incompatible noise impacts. Require mitigation for identified impacts.

Policy SN-8.3 Noise Mitigation. Require the installation of sound walls, earthen berms, wall, window noise insulation, and other mitigation measures for new development in areas that may exceed the City’s noise limit standards.

Policy SN-8.4 Circulation Pattern. Encourage a Citywide circulation pattern that places primary traffic loads on major arterials and preserves local neighborhood noise environments by controlling traffic speeds to the greatest extent practical.

Policy SN-8.5 Compatible Land Uses. Designate land uses that are compatible with higher noise levels adjacent to major arterial roads and highways, the Interstate 10 corridor, or designated industrial lands.

Policy SN-8.6 Truck Routes. Designate primary truck routes and clearly mark these routes through the City. Other than vehicles providing local service, construction traffic, and delivery trucks, through traffic shall be limited to those as detailed in the Circulation chapter.

Policy SN-8.8 Interior Noise Standards. Enforce quantitative exterior and interior noise standards for various types of sensitive land uses.

Policy SN-8.9 Exterior Noise Standards. Allow for an exceedance of exterior noise standards for all land use types as long as adequate mitigation is provided for interior noise reduction.

Policy SN-8.10 Noise-Generating Uses. Require specific design for noise-generating uses such as restaurants, bars, and industrial businesses located near sensitive uses such as residential.

Policy SN-8.11 Noise Level Compliance. Require new development to monitor and document compliance with all applicable noise level limits in areas subject to potentially significant noise impacts. 14 Item Number: 1.

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Policy SN-8.12 Delivery or Service Noise Generation. Limit delivery or service hours for businesses with potential noise-generating features such as trash bins, docks, loading areas that are located near sensitive uses such as residences, schools, and hospitals.

Policy SN-8.13 Noise-Reducing Pavement. Encourage the use of noise-reducing paving materials such as rubberized asphalt for road surfacing projects near sensitive land uses.

City of Desert Hot Springs Municipal Code
The City of Desert Hot Springs Municipal Ordinances applicable to the evaluation of the proposed project in this analysis include the following:

Section 8.12.030 Noise Disturbances Prohibited.

It is unlawful for any person to make, suffer, permit, allow, continue, or cause to be made, suffered, permitted, allowed, or continued, within the City limits or within 200 feet thereof, any noise disturbance. Per Section 8.12.020 a noise disturbance is any sound that:
(1) Endangers the safety or health of any person;
(2) Disturbs a reasonable person of normal sensitivities; or (3) Endangers personal or real property.

Section 8.12.080 Standing Motor Vehicles.

No person shall operate or permit the operation of any motor vehicle with a gross vehicle weight rating in excess of 10,000 pounds, or any auxiliary equipment attached to such a vehicle, including but not limited to refrigerated truck compressors, for a period longer than 15 minutes in any hour while the vehicle is stationary, on a public right-of-way or public space, and within 150 feet of a residential dwelling or noise sensitive zone, between the hours of 7:00 PM and 7:00 AM, for reasons other than traffic congestion.

Section 8.12.090 Limiting Noises or Vibration Created by Vehicles, Tools or Machinery to Permitted Hours of Operation.

It is unlawful for any person to cause, suffer, allow, or permit any of the following outside of the following hours:

Monday through Friday, 7:00 AM through 6:00 PM; Saturday, 8:00 AM through 6:00 PM and Sunday, 9:00 AM through 5:00 PM.
 Loading and unloading of vehicles, operating of forklifts or cranes within 1,000 feet of a residence or noise sensitive zone.
 Loading, unloading, opening, closing or other handling of boxes, crates, containers, building materials, garbage cans, or similar objects in such a manner as to cause a noise disturbance across a residential real property boundary.
 Operating any mechanically powered saw, sander, drill, grinder, lawn or garden tool, or similar device so as to cause a noise disturbance across a residential real property boundary.

Section 8.12.100 Construction – Hours of Work Permitted.

It is unlawful for any person to cause, suffer, allow or permit any construction, drilling or demolition work, or the use of tools or equipment therefor, during those times and on those days that such activities are prohibited pursuant to Section 9.04.030 of this code.

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Section 9.04.030 Construction – Hours of Work Permitted.

Except as herein otherwise provided, no person shall be engaged or employed nor shall any person cause any other person to be engaged or employed in any work of construction, erection, alteration, or repair, addition to or improvement of any building, structure, road or improvement to realty between the hours of 5:00 PM of each day and 7:00 AM of the next day, except when daylight savings time is in effect. During such time as daylight savings time is in effect in the City, no such activities shall be permitted between the hours of 6:00 PM of each day and 6:00 AM of the next day. No such activities shall be permitted on Sundays.

Section 17.40.180 Noise.

No loudspeaker, bells, gongs, buzzers, mechanical equipment or other sounds, attention attracting, or communication device associated with any use shall be discernible beyond any boundary line of the parcel, except fire protection devices, burglar alarms and church bells. The following provisions shall apply:

A. In residential areas, no exterior noise level shall exceed 65 dBA and no interior noise level shall exceed 45 dBA.

Section 17.40.300 Vibration.

No vibration associated with any use shall be permitted which is discernible beyond the boundary line of the property. 16 Item Number: 1.

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Transient Sources Continuous/Frequent Intermittent Sources Extremely fragile historic buildings, ruins, ancient monuments 0.12 0.08 Fragile buildings 0.2 0.1
Historic and some old buildings 0.5 0.25
Older residential structures 0.5 0.3
New residential structures 1.0 0.5
Modern industrial/commercial buildings 2.0 0.5
(1) Transient sources create a single isolated vibration event, such as blasting or drop balls. Continuous/frequent intermittent sources include impact pile drivers, pogo-stick compactors, crack-and-seat equipment, vibratory pile drivers, and vibratory compaction equipment.

Table 3
Guideline Vibration Damage Potential Threshold Criteria Structure Condition
Maximum PPV (in/sec)
Notes:

Source: California Department of Transportation. Transportation and Construction Vibration Guidance Manual, Chapter 7 Table 19, April 2020.

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Transient Sources Continuous/Frequent Intermittent Sources Barely perceptible 0.04 0.01
Distinctly perceptible 0.25 0.04
Strongly perceptible 0.9 0.10
Severe 2.0 0.4
Source: California Department of Transportation. Transportation and Construction Vibration Guidance Manual, Chapter 7 Table 20, April 2020.

Table 4
Guideline Vibration Annoyance Potential Criteria
(1) Transient sources create a single isolated vibration event, such as blasting or drop balls. Continuous/frequent intermittent sources include impact pile drivers, pogo-stick compactors, crack-and-seat equipment, vibratory pile drivers, and vibratory compaction equipment.

Human Response
Maximum PPV (in/sec)
Notes:

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50 55 60 65 70 75 80
Residential land uses: Single and multifamily dwellings A A B C C D D Residential land uses: Mobile homes A B C C D D D
Transient lodging: Hotels and motels A A B B C C D
Schools, libraries, churches, hospitals, nursing homes & convalescent hospitals A A B C C D D
Recreation land uses: Golf courses, open space (with
walking, bicycling or horseback riding trails, etc.) A A A A B C C Playgrounds, neighborhood parks A A A B C D D
Office building, person business, and professional services A A A B B C D Commercial land uses: Retail trade, movie theaters,
restaurants, bars, entertainment activities, services A A A A B B C Heavy commercial/industrial: wholesale, manufacturing,
utilities, transportation, communications A A A A B B B Auditoriums, concert halls, amphitheaters, music shells, meeting halls B B C C D D D
Explanatory Notes:

D. Land Use Discouraged: New construction or development should generally not be undertaken.

E. The residential exterior noise standard of 65 dBA shall generally be applicable only to outdoor living areas, such as rear yard areas.

Source: City of Desert Hot Springs General Plan Safety and Noise Element, Table SN-2 (May 2020).

Noise and Land Use Compatibility Guidelines
Table 5
Land Uses
CNEL, dB
A. Normally Acceptable: With no special noise reduction requirements assuming standard construction.

B. Conditionally Acceptable: New construction or development should be undertaken only after a detailed analysis of the noise reduction requirement is made and needed noise insulation features included in the design.

C. Generally Unacceptable: New construction is discouraged. If new construction does proceed, a detailed analysis of noise reduction requirements must be made and needed noise insulation features included in the design.

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5. ANALYTICAL METHODOLOGY AND MODEL PARAMETERS
This section discusses the analysis methodologies used to assess noise impacts.

CONSTRUCTION NOISE MODELING
Construction noise will vary depending on the construction process, type of equipment involved, location of the construction site with respect to sensitive receptors, the schedule proposed to carry out each task (e.g., hours and days of the week) and the duration of the construction work.

Construction noise associated with the proposed project was calculated at the sensitive receptor locations utilizing methodology presented in the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (2018) together with several key construction parameters, including: distance to each sensitive receiver, equipment usage, percent usage factor, and baseline parameters for the project site.

The equipment used to calculate the construction noise levels for each phase were based on the assumptions provided in the CalEEMod modeling in the Air Quality Analysis prepared for the proposed project (Lilburn, 2023). For analysis purposes, the distance measured from the project site to sensitive receptors was assumed to be the acoustical center of the project site to the property line of residential properties with existing residential buildings. Sound emission levels associated with typical construction equipment as well as typical usage factors are provided in Table 6. Construction worksheets are provided in Appendix D.

STATIONARY SOURCE/OPERATIONAL NOISE MODELING
The SoundPLAN acoustical modeling software was utilized to model project operational stationary noise levels from the proposed project to adjacent sensitive uses (e.g., residences). SoundPLAN is capable of evaluating stationary noise sources (e.g., parking lots, drive-through menus, car wash equipment, vacuums, etc.). The SoundPLAN software utilizes algorithms (based on the inverse square law) to calculate noise level projections.

The software allows the user to input specific noise sources, spectral content, sound barriers, building placement, topography, and sensitive receptor locations. In addition to the information provided below, noise modeling input and outputs assumptions are provided in Appendix E.

Operational noise levels were modeled utilizing representative sound levels in the SoundPLAN model.

Modeled noise sources include car wash equipment, vacuum equipment, queuing, fast-food ordering speakers, parking lot noise, and HVAC equipment. The noise level associated with project operation was modeled utilizing representative sound levels in the SoundPLAN model as well as representative noise measurements and manufacturer provided data. All noise sources were modeled to be in full operation for an entire hour (60 minutes per hour) during daytime hours. This is a highly conservative modeling effort given that several of the noise sources will not operate continuously for an entire hour.

Car Wash Equipment Noise

The car wash drying system is by far the loudest noise source associated with the car wash tunnel. Other noise sources in the car wash tunnel would not be loud enough to be noticeable over the drying system noise.

A representative sound level of 95.1 dBA Leq
1 at the tunnel exit was utilized to model the drying system in the SoundPLAN noise model. The drying system was modeled five feet from the opening of the end of the car wash tunnel at a height of eight feet.

1 Representative Noise Measurement for Peco Blower System, Surf Thru Car Wash. MD Acoustics, LLC. 20 Item Number: 1.

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Vacuum Equipment Noise

A point noise source of 76.8 dB at a distance of 3 feet (sound power level of 84.8) was assigned to each vacuum station to represent noise associated with general vacuuming/blowing activities. This noise level was collected at a Fast Five Car Wash in the City of Murrieta, California on November 7th, 2017. The measured

76.8 dB noise level at three feet is an average of three (3) five-minute noise measurements taken while cleaning the front seat area of a car.2 This modeling methodology is very conservative as it assumes that all vacuum stations are being utilized at the same time continuously for an entire hour.

Parking Lot Noise
Parking lot noise was calculated using SoundPLAN methodology. Specifically, the traffic volume of the parking lot is entered with the number of moves per parking space, the hour and the number of parking bays. The user defines whether the parking lots are for automobiles, motorcycles, or trucks, and the emission level of a parking lot is automatically adjusted accordingly. The values for the number of parking moves for each time slice is the number of parking moves per reference unit (most often per parking bay), averaged for the hour3.

SoundPLAN utilizes parking lot noise emission levels from the 6th revised edition of the parking lot study “Recommendations for the Calculation of Sound Emissions of Parking Areas, Motorcar Centers and Bus Stations as well as of Multi-Story Car Parks and Underground Car Parks” published by the Bavarian Landesamt für Umwelt provides calculation methods to determine the emissions of parking lots.

The parking lot emission table documents the reference level (Lw, ref) from parking lot study:

Lw, ref = Lw0 + KPA + KI + KD + KStrO + 10 log(B) [dB(A)] With the following parameters:

Lw0 = Basic sound power, sound power level of one motion / per hour on P+R areas = 63 dB(A) KPA = Surcharge parking lot type
KI = Surcharge for impulse character
KD = Surcharge for the traffic passaging and searching for parking bays in the driving lanes 2.5 * lg (f * B - 9)
f = Parking bays per unit of the reference value
B = Reference value
KStrO = Surcharge for the road surface
B = Reference value

Mechanical Equipment (HVAC Units) Noise
It is expected that the buildings associated with the proposed project would include rooftop mounted heating, ventilation, and air conditioning (HVAC) units. The type, size and number of mechanical equipment are not known at this time. A conservative estimate was utilized for modeling purposes. The HVAC equipment was modeled as point sources placed on-top of each structure’s roof. A noise reference level of 67.7 dBA at 3 feet (sound power level of 78.7 dB) was utilized to represent rooftop 5 Ton Carrier HVAC units.4 2 2017 Noise Measurements, Fast Five Car Wash. City of Murrieta, November 7. Kunzman Associates, Inc. 3 SoundPLAN Essential 4.0 Manual. SoundPLAN International, LLC. May 2016. 4 MD Acoustics, LLC. Noise Measurement Data for RTU –Carrier 50TFQ0006 and car alarm. 21 Item Number: 1.

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Drive-Through Speakers
The drive-through speakers were modeled as point sources and a SoundPLAN noise reference level to represent loud human voices of 70 dBA utilized.

Service Station Fueling Area
The service station fueling area was modeled by utilizing SoundPLAN noise reference level for a human voice at 61 dBA per square meter, resulting in an overall noise level of 65 dBA. This representative sound level is intended to represent fueling area activities including vehicles arriving and leaving, mechanical noise, and conversation.

Air//Water Service
A sound pressure level of 68 dBA5 as measured 6 inches from the source was used to model sound associated with air and water service.

MOBILE SOURCE NOISE MODELING
Noise from vehicular traffic was projected using a computer program that replicates the FHWA Traffic Noise Prediction Model (FHWA-RD-77-108). The FHWA model arrives at the predicted noise level through a series of adjustments to the Reference Energy Mean Emission Level (REMEL). Key model parameters and REMEL adjustments are presented below:
 Roadway classification (e.g., freeway, major arterial, arterial, secondary, collector, etc.)  Roadway active width (distance between the center of the outer most travel lanes on each side of the roadway)
 Average Daily Traffic (ADT) Volumes, Travel Speeds, Percentages of automobiles, medium trucks and heavy trucks
 Roadway grade and angle of view
 Site conditions (e.g., soft vs. hard)
 Percentage of total ADT which flows each hour throughout a 24-hour period Table 7 shows the roadway volumes, speeds, and site conditions used in the analysis. The following outlines key adjustments made to the REMEL for project site parameter inputs:
 Vertical and horizontal distances (sensitive receptor distance from noise source)  Noise barrier vertical and horizontal distances (noise barrier distance from sound source and receptor).  Traffic noise source spectra
 Topography
Traffic noise levels were calculated at the right-of-way based on distance from the centerline of the analyzed roadway. The modeling is theoretical and does not take into account any existing barriers, structures, and/or topographical features that may further reduce noise levels. Therefore, the modeled noise levels are shown for comparative purposes only to show the difference between with and without project conditions. The traffic noise calculation worksheets are included in Appendix F.

GROUNDBORNE VIBRATION MODELING
Groundborne vibration modeling was performed using vibration propagation equations and construction equipment source levels obtained from the FTA Transit Noise and Vibration Impact Assessment Manual (2018). 5 SoundPLAN representative noise measurement.
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Table 8 shows typical vibration levels associated with commonly used construction equipment based on data from the FTA.

There are several types of construction equipment that can cause vibration levels high enough to annoy persons in the vicinity and/or result in architectural or structural damage to nearby structures and improvements. For example, as shown in Table 8, a vibratory roller could generate up to 0.21 in/sec PPV at and operation of a large bulldozer could generate up to 0.089 PPV at a distance of 25 feet (two of the most vibratory pieces of construction equipment). Groundborne vibration at sensitive receptors associated with this equipment would drop off as the equipment moves away. For example, as the vibratory roller moves further than 100 feet from the sensitive receptors, the vibration associated with it would drop below 0.0026 in/sec PPV. It should be noted that these vibration levels are reference levels and may vary slightly depending upon soil type and specific usage of each piece of equipment.

The fundamental equation used to calculate vibration propagation through average soil conditions and distance is as follows:

PPVequipment = PPVref (25/Drec)
n
Where: PPVref = reference PPV at 25ft.

Drec = distance from equipment to receiver in ft.
n = 1.5 (the value related to the attenuation rate through ground) Groundborne vibration calculations are provided in Appendix G. 23 Item Number: 1.

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Table 6 (1 of 2)
CA/T Equipment Noise Emissions and Acoustical Usage Factor Database Equipment Description
Impact
Device?
Acoustical
Use Factor (%)
Spec. Lmax
@ 50ft
(dBA, slow)
Actual
Measured
Lmax @ 50ft
(dBA, slow)
No. of Actual
Data Samples
(Count)
All Other Equipment > 5 HP No 50 85 -N/A- 0
Auger Drill Rig No 20 85 84 36
Backhoe No 40 80 78 372
Bar Bender No 20 80 -N/A- 0
Blasting Yes -N/A- 94 -N/A- 0
Boring Jack Power Unit No 50 80 83 1
Chain Saw No 20 85 84 46
Clam Shovel (dropping) Yes 20 93 87 4
Compactor (ground) No 20 80 83 57
Compressor (air) No 40 80 78 18
Concrete Batch Plant No 15 83 -N/A- 0
Concrete Mixer Truck No 40 85 79 40
Concrete Pump Truck No 20 82 81 30
Concrete Saw No 20 90 90 55
Crane No 16 85 81 405
Dozer No 40 85 82 55
Drill Rig Truck No 20 84 79 22
Drum Mixer No 50 80 80 1
Dump Truck No 40 84 76 31
Excavator No 40 85 81 170
Flat Bed Truck No 40 84 74 4
Forklift2,3 No 50 n/a 61 n/a
Front End Loader No 40 80 79 96
Generator No 50 82 81 19
Generator (<25KVA, VMS signs) No 50 70 73 74
Gradall No 40 85 83 70
Grader No 40 85 -N/A- 0
Grapple (on backhoe) No 40 85 87 1
Horizontal Boring Hydr. Jack No 25 80 82 6
Hydra Break Ram Yes 10 90 -N/A- 0
Impact Pile Driver Yes 20 95 101 11
Jackhammer Yes 20 85 89 133
Man Lift No 20 85 75 23
Mounted Impact hammer (hoe ram) Yes 20 90 90 212
Pavement Scarafier No 20 85 90 2
Paver No 50 85 77 9
Pickup Truck No 50 85 77 9
Paving Equipment No 50 85 77 9
Pneumatic Tools No 50 85 85 90
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Table 6 (2 of 2)
CA/T Equipment Noise Emissions and Acoustical Usage Factor Database Equipment Description
Impact
Device?
Acoustical
Use Factor (%)
Spec. Lmax
@ 50ft
(dBA, slow)
Actual
Measured
Lmax @ 50ft
(dBA, slow)
No. of Actual
Data Samples
(Count)
Pumps No 50 77 81 17
Refrigerator Unit No 100 82 73 3
Rivit Buster/chipping gun Yes 20 85 79 19
Rock Drill No 20 85 81 3
Roller No 20 85 80 16
Sand Blasting (Single Nozzle) No 20 85 96 9
Scraper No 40 85 84 12
Shears (on backhoe) No 40 85 96 5
Slurry Plant No 100 78 78 1
Slurry Trenching Machine No 50 82 80 75
Soil Mix Drill Rig No 50 80 -N/A- 0
Tractor No 40 84 -N/A- 0
Vacuum Excavator (Vac-truck) No 40 85 85 149
Vacuum Street Sweeper No 10 80 82 19
Ventilation Fan No 100 85 79 13
Vibrating Hopper No 50 85 87 1
Vibratory Concrete Mixer No 20 80 80 1
Vibratory Pile Driver No 20 95 101 44
Warning Horn No 5 85 83 12
Welder/Torch No 40 73 74 5
Notes:
(1) Source: FHWA Roadway Construction Noise Model User's Guide January 2006. (2) Warehouse & Forklift Noise Exposure - NoiseTesting.info Carl Stautins, November 4, 2014 http://www.noisetesting.info/blog/carl-strautins/page-3/ (3) Data provided Leq as measured at the operator. Sound Level at 50 feet is calculated using Inverse Square Law.

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Existing
Existing Plus
Project (Phase II)
Karen Ave North of Pierson Boulevard 500 740 50 Soft
North of Mission Lakes Boulevard 4,600 4,840 55 Soft
South of Mission Lakes Boulevard 4,800 5,770 55 Soft
North of Pierson Boulevard 5,000 7,170 55 Soft
South of Pierson Boulevard 5,700 6,670 55 Soft
North of Pierson Boulevard 4,800 5,280 50 Soft
South of Pierson Boulevard 4,600 4,840 55 Soft
Mission Lakes Blvd East of Indian Canyon Drive 3,900 4,630 50 Soft West of Karen Avenue 3,500 4,470 50 Soft
East of Karen Avenue 4,000 5,210 50 Soft
West of Indian Canyon Drive 4,000 4,480 50 Soft
East of Indian Canyon Drive 4,800 6,490 50 Soft
West of Little Morongo Road 5,800 7,490 50 Soft
East of Little Morongo Road 7,000 7,970 50 Soft
Motor-Vehicle Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Automobiles 75.56 13.96 10.49
Medium Trucks 48.91 2.17 48.91
Heavy Trucks 47.30 5.41 47.30
Motor-Vehicle Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Automobiles 75.54 14.02 10.43
Medium Trucks 48.00 2.00 50.00
Heavy Trucks 48.00 2.00 50.00
Notes:

Pierson Blvd
(2) Existing vehicle percentages are based on the Riverside County Industrial Hygiene Letter for Traffic Noise.

Project Average Daily Traffic Volumes and Roadway Parameters Table 7
Roadway Segment Site Conditions
Posted Travel
Speeds (MPH)
Vehicle Distribution (Light Mix)2
Vehicle Distribution (Heavy Mix)2
Average Daily Traffic Volume1
(1) Existing and Project (Phase II) average daily traffic volumes obtained from the Beyond Food Mart (Indian Canyon & Pierson) Traffic Impact Analysis prepared by Ganddini Group, Inc. (February 20, 2023).

Indian Canyon Dr
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PPV at 25 ft, in/sec Approximate Lv* at 25 ft
upper range 1.518 112
typical 0.644 104
upper range 0.734 105
typical 0.170 93

0.202 94
in soil 0.008 66
in rock 0.017 75

0.210 94

0.089 87

0.076 86

0.035 79

0.003 58
Jackhammer
Small Bulldozer
Source: Federal Transit Administration: Transit Noise and Vibration Impact Assessment Manual, 2018. *RMS velocity in decibels, VdB re 1 micro-in/sec
Construction Equipment Vibration Source Levels
Loaded Trucks
Table 8
Equipment
Pile Driver (impact)
Pile Driver (sonic)
Caisson Drilling
clam shovel drop (slurry wall)
Hydromill (slurry wall)
Vibratory Roller
Hoe Ram
Large Bulldozer
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6. NOISE AND VIBRATION IMPACTS
This section analyzes the significance of project-related noise and groundborne vibration impacts relative to standards established by the City of Desert Hot Springs and other applicable agencies in the context of CEQA.

Appendix G of the California Environmental Quality Act Guidelines (Title 14, Division 6, Chapter 3 of the California Code of Regulations) includes an environmental checklist that identifies issues upon which findings of significance should be made. The CEQA Environmental Checklist Appendix G, XIII. Noise, requires determination if the project would result in:
a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies?
b) Generation of excessive groundborne vibration or groundborne noise levels? c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the area to excessive noise levels?

NOISE IMPACTS
Would the project result in:
a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies?
Finding: Less Than Significant with Proposed Change in Wall Design In relation to the Environmental Checklist noise issue “a”, applicable standards established by the City of Desert Hot Springs can be categorized into the following areas:
 Construction Noise
 Stationary Source Noise
 Mobile Source Noise
Construction Noise
Construction noise is regulated within Section 9.04.030 of the City of Desert Hot Springs Municipal Code (see Regulatory Setting section of this report). Accordingly, the project would result in a significant impact if:
 Project construction occurs outside the hours of 7:00 AM to 5:00 PM except when daylight savings time is in effect; or,
 Project construction occurs outside the hours of 6:00 AM to 6:00 PM during daylight savings time; or,  Construction activities occur at any time on Sundays.

Project construction noise levels at nearby sensitive receptors were calculated using the FTA methodology.

Construction noise modeling worksheets for each phase are provided in Appendix D. Anticipated noise levels during each construction phase are presented in Table 9. 28 Item Number: 1.

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Modeled construction noise levels at properties with existing residential land uses are forecast to reach up to

57.5 dBA Leq southwest of the project site, 66.0 dBA Leq at 64150 Pierson Blvd, east of the project site, 55 dBA Leq northwest of the project site along Western Avenue, 56 dBA Leq northwest of the project site along Scenic Drive, and up to 53.7 dBA Leq east of the project site at 11750 Desert Terrace. Project construction noise may reach up to 52.7 dBA Leq at the nearest church property line southeast of the project site (see Table 9).

Project construction will not occur outside of the hours outlined in Section 9.04.030 of the City of Desert Hot Springs Municipal Code. Project construction will not violate any applicable ordinance or policy. The project impact is less than significant; no mitigation is required.

Stationary Source Noise
Stationary noise source standards are established within Section 17.40.180 of the City of Desert Hot Springs Municipal Code (see Regulatory Setting section of this report). Accordingly, the project would result in a significant impact if:
 Project operational noise exceeds the City-established noise standard at the exterior of properties located in residential areas (65 dBA Leq in residential areas); or,  Project operational noise exceeds the City-established noise standard at the interior of properties located in residential areas (45 dBA Leq in residential areas).

Noise levels at adjacent and nearby areas that are or may be developed with residential land uses were modeled using the SoundPLAN acoustical model. SoundPLAN modeling worksheets are provided in Appendix E.

Modeled project operational noise levels as currently proposed (with a six-foot concrete masonry wall along the northern and western property boundaries) are shown on Figure 6. Operational noise levels as proposed would range between 28 and 63 dBA Leq at the property lines of modeled receptors and would not exceed exterior or interior noise ordinance standards. No mitigation is required. Considering that future residential construction will provide approximately 20 dB of exterior to interior noise reduction project operational will also not exceed the City’s interior noise standard of 45 dBA Leq.

Mobile Source Noise
The City of Desert Hot Springs General Plan establishes that single-family residential land uses are considered normally acceptable in areas where outdoor noise levels in residential areas reach up to a CNEL of 60 dBA (Table 5). Furthermore, it is widely accepted that the average healthy human ear can barely perceive changes of 3 dBA in an outdoor environment and that a change of 5 dBA is readily perceptible.6 Accordingly, the project would result in a significant impact if the addition of project trips on surrounding roadways causes noise levels to increase by:
 5 dBA in residential areas where the existing ambient noise level is less than or equal to a CNEL of 60 dBA; or,
 3 dBA in residential areas where the existing ambient noise level exceeds a CNEL of 60 dBA. 6 California Department of Transportation’s Technical Noise Supplement to the Traffic Noise Analysis Protocol (2013) 29 Item Number: 1.

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Project Operational Mobile Source Noise
Roadway noise levels were calculated at roadways included in the Beyond Food Mart (Indian Canyon & Pierson) Traffic Impact Analysis (Ganddini Group, Inc., February 20, 2023) based on the FHWA Traffic Noise Prediction Model methodology. During operation, Phase II (buildout) of the proposed project is expected to generate approximately 4,834 average daily trips (with incorporation of internal capture and pass-by trip reductions) with 177 trips during the AM peak-hour and 195 trips during the PM peak-hour. Roadway noise levels were calculated for the following scenarios:
 Existing (without Project): This scenario refers to existing year traffic noise conditions.  Existing Plus Project: This scenario refers to existing year plus project traffic noise conditions.

Table 10 shows the change in existing roadway noise levels with the addition of project-generated operational trips. FHWA Traffic Noise Prediction Model calculation worksheets are provided in Appendix F.

As shown in Table 10, modeled existing traffic noise levels range between 59-72 dBA CNEL and the modeled Existing Plus Project traffic noise levels range between 60-74 dBA CNEL at the right-of-way of each study roadway segment. The addition of project trips is not expected to change noise levels in excess of the applicable threshold at any of the study roadway segments (see Table 10). The project impact is less than significant; no mitigation is required.

Off-Site Construction Noise
Construction truck trips would occur throughout the construction period. Given the project site’s proximity to the Interstate 10 Freeway and State Route 62, it is anticipated that vendor and/or haul truck traffic would take the most direct route to the appropriate freeway ramps.

Indian Canyon Drive currently handles between 4,600 and 5,700 average daily vehicle trips in the vicinity of the project site and Pierson Boulevard handles between 3,500 and 7,000 average daily vehicle trips.7 According to the, Beyond Food Mart (Indian Canyon & Pierson) Air Quality Analysis prepared for the proposed project (Lilburn, 2023), the greatest number of construction-related vehicle trips per day would be during building construction at up to 117 vehicle trips per day (84 for worker trips and 33 for vendor trips). Therefore, vehicle traffic generated during project construction is nominal relative to existing roadway volumes and would not result in the doubling of traffic volume necessary to increase noise levels by 3 dBA. The project impact is less than significant; no mitigation is required.

GROUNDBORNE VIBRATION IMPACTS
Would the project result in:
b) Generation of excessive groundborne vibration or groundborne noise levels? Finding: Less Than Significant
In relation to the Environmental Checklist noise issue “b”, Section 17.40.300 of the City of Desert Hot Springs states that no vibration associated with any use shall be permitted which is discernible beyond the boundary line of the property. However, the City of Desert Hot Springs has not established a threshold of significance concerning what level of groundborne vibration is considered discernable. In the absence of City-established thresholds, groundborne vibration impacts are based on guidance from the Transportation and Construction 7 Existing average daily traffic volumes were obtained from the Beyond Food Mart (Indian Canyon & Pierson) Traffic Impact Analysis (TIA) prepared by Ganddini Group, Inc. (December 2, 2022), see Table 7. 30 Item Number: 1.

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Vibration Guidance Manual (California Department of Transportation, 2020) (see Regulatory Setting section).

Accordingly, the project would result in a significant impact if:
 Groundborne vibration levels generated by the project have the potential to cause architectural damage at nearby buildings by exceeding the following PPV:
□ 0.08 in/sec at extremely fragile historic buildings, ruins, ancient monuments □ 0.10 in/sec at fragile buildings
□ 0.25 in/sec at historic and some old buildings
□ 0.30 in/sec at older residential structures
□ 0.50 in/sec at new residential structures and modern industrial/commercial buildings.  Groundborne vibration levels generated by the project have the potential to cause severe annoyance to people living or working in nearby buildings by exceeding a PPV of 0.4 in/sec.

Groundborne vibration modeling worksheets are provided in Appendix G.

Based on the groundborne vibration modeling, use of a vibratory roller is expected to generate a PPV of 0.026 in/sec and use of a bulldozer is expected to generate a PPV of 0.011 in/sec at the closest off-site building, a vacant commercial building located approximately 100 feet to the south of the project site. Other equipment anticipated to be used during project construction generate lower PPV. Therefore, groundborne vibration generated by project construction would not exceed the levels necessary to cause architectural damage or severe annoyance to persons living or working in nearby buildings. The project impact is less than significant; no mitigation is required.

The most substantial sources of groundborne vibration during post-construction project operations will include the movement of passenger vehicles and trucks on paved and generally smooth surfaces. Loaded trucks generally have a PPV of 0.076 at a distance of 25 feet (Caltrans 2020), which is a substantially lower PPV than that of a vibratory roller (0.210 in/sec PPV at 25 feet). Therefore, groundborne vibration levels generated by project operation would not exceed those modeled for project construction.

AIR TRAFFIC IMPACTS
Would the project result in:
c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the area to excessive noise levels? Finding: No Impact
In relation to the Environmental Checklist noise issue “c”, the closest airport to the project site is the Palm Springs International Airport, with airport runways located as close as approximately 8.44 miles southeast of the project site. The Riverside County Airport Land Use Compatibility Plan (ALUCP) East County Airports Background Data (March 2005) shows that the project site is well outside the 60 dBA CNEL noise contour for the Palm Springs International Airport, as shown on Exhibits PS-4, PS-5 and PS-7. Therefore, the project would not expose people residing or working in the project area to excessive noise levels associated with airports.
31 Item Number: 1.

Page 959 of 2517 ends

Receptor Location
Existing Ambient
Noise Levels
(dBA Leq)1
Construction
Noise Levels
(dBA Leq)2
Residential Use to the East (64150 Pierson Boulevard) 45.2 66.0 Residential Use to the Southwest (63655 Paseo Yucca Vista) 52.9 57.5 Residential Use to the Northwest (11700 Western Avenue) 47.4 55.0 Residential Use to the Northwest (63680 Scenic Drive) 42.6 56.0 Residential Use to the East (11750 Desert Terrace Way) 45.2 53.7 Church Use to the Southeast (64565 Pierson Boulevard) 66.0 52.7 Residential Use to the East (64150 Pierson Boulevard) 45.2 65.6 Residential Use to the Southwest (63655 Paseo Yucca Vista) 52.9 57.1 Residential Use to the Northwest (11700 Western Avenue) 47.4 54.6 Residential Use to the Northwest (63680 Scenic Drive) 42.6 55.6 Residential Use to the East (11750 Desert Terrace Way) 45.2 53.3 Church Use to the Southeast (64565 Pierson Boulevard) 66.0 52.3 Residential Use to the East (64150 Pierson Boulevard) 45.2 64.2 Residential Use to the Southwest (63655 Paseo Yucca Vista) 52.9 55.7 Residential Use to the Northwest (11700 Western Avenue) 47.4 53.2 Residential Use to the Northwest (63680 Scenic Drive) 42.6 54.2 Residential Use to the East (11750 Desert Terrace Way) 45.2 51.9 Church Use to the Southeast (64565 Pierson Boulevard) 66.0 50.9 Residential Use to the East (64150 Pierson Boulevard) 45.2 62.7 Residential Use to the Southwest (63655 Paseo Yucca Vista) 52.9 54.2 Residential Use to the Northwest (11700 Western Avenue) 47.4 51.7 Residential Use to the Northwest (63680 Scenic Drive) 42.6 52.7 Residential Use to the East (11750 Desert Terrace Way) 45.2 50.4 Church Use to the Southeast (64565 Pierson Boulevard) 66.0 49.4 Residential Use to the East (64150 Pierson Boulevard) 52.3 Residential Use to the Southwest (63655 Paseo Yucca Vista) 52.9 43.8 Residential Use to the Northwest (11700 Western Avenue) 47.4 41.3 Residential Use to the Northwest (63680 Scenic Drive) 42.6 42.3 Residential Use to the East (11750 Desert Terrace Way) 45.2 40.0 Church Use to the Southeast (64565 Pierson Boulevard) 66.0 39.0 Notes:
(2) Construction noise worksheets are provided in Appendix D. (1) See Table 1 for measured ambient noise. STNM1 was used to represent the property lines of the residential receptors to southwest (along Paseo Yucca Vista), STNM2 was used to represent the property lines of the residential receptors to the west/northwest (along Western Avenue), STMM3 was used to represent property lines of the residential receptors to the northwest (along Scenic Drive), STNM4 was used to represent property lines of the residential receptors to the east (64150 Pierson Blvd. and along Desert Terrace Way), and STNM5 was used to represent the property lines of the church receptor to the southeast (along Pierson Boulevard) of the project site.

Table 9
Construction Noise Levels (dBA Leq)
Phase
Site Preparation
Grading
Building
Construction
Paving
Architectural
Coating
Beyond Food Mart (Indian Canyon Pierson)
Noise Impact Analysis
32 19543
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Existing
Without
Project at
right-of-way
Existing Plus
Project (Phase
II) at right-ofwayChange in
dBA
Exceeds
Standards3
Increase of 3
dB or More
Karen Ave North of Pierson Boulevard 36 58.67 60.37 1.70 Yes No North of Mission Lakes Boulevard 40 71.86 72.08 0.22 Yes No South of Mission Lakes Boulevard 40 72.04 72.84 0.80 Yes No North of Pierson Boulevard 40 72.22 73.79 1.57 Yes No
South of Pierson Boulevard 55 71.41 72.09 0.68 Yes No
North of Pierson Boulevard 40 71.38 71.80 0.42 Yes No
South of Pierson Boulevard 40 71.86 72.08 0.22 Yes No
Mission Lakes Blvd East of Indian Canyon Drive 36 67.59 68.34 0.75 Yes No West of Karen Avenue 55 68.63 69.69 1.06 Yes No
East of Karen Avenue 55 69.21 70.36 1.15 Yes No
West of Indian Canyon Drive 55 69.21 69.70 0.49 Yes No
East of Indian Canyon Drive 55 70.00 71.31 1.31 Yes No
West of Little Morongo Road 55 70.82 71.93 1.11 Yes No
East of Little Morongo Road 55 71.64 72.20 0.56 Yes No
Notes:
(2) Right of way per the City of Desert Hot Springs General Plan Mobility and Infrastructure Element (2020).

Distance from
roadway
centerline to
right-of-way
(feet)2
(3) Per the City of Desert Hot Springs normally acceptable standard for single-family detached residential dwelling units (see Table 5).

Increase in Existing Noise Levels Along Roadways as a Result of Project (dBA CNEL) Table 10
(1) Exterior noise levels calculated 5 feet above pad elevation, perpendicular to subject roadway.

Roadway Segment
Modeled Noise Levels (dBA CNEL)1
Pierson Blvd
Indian Canyon Dr
Little Morongo Rd
Beyond Food Mart (Indian Canyon Pierson)
Noise Impact Analysis
33 19543
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Figure 6
Operational Noise Levels With Proposed 6 Ft Wall
Beyond Food Mart (Indian Canyon & Pierson)
Noise Impact Analysis
34 19543
Item Number: 1.

Page 962 of 2517 ends

Beyond Food Mart (Indian Canyon & Pierson)
Noise Impact Analysis
35 19543

7. REFERENCES
California Department of Transportation
2020 Transportation and Construction Vibration Manual. April.

Desert Hot Springs, City of
2015 Municipal Ordinance
2020 General Plan. May 26.

Environmental Protection Agency
1974 "Information on Levels of Environmental Noise Requisite to Protect Public Health And Welfare with an Adequate Margin of Safety," EPA/ONAC 550/9-74-004, March, 1974.

Federal Transit Administration
2006 Transit Noise and Vibration Impact Assessment. Typical Construction Equipment Vibration Emissions.

FTAVA-90-1003-06.
2018 Transit Noise and Vibration Impact Assessment Manual. Typical Construction Equipment Vibration Emissions.

Ganddini Group, Inc.
2023 Beyond Food Mart (Indian Canyon & Pierson) Traffic Impact Analysis. February 20.

Office of Planning and Research
2017 State of California General Plan Guidelines
Riverside, County of
2001 General Plan, Chapter 4, Figure C-3 "Link Volume Capacities/Level of Service for Riverside County Roadways".
2009 County of Riverside Industrial Hygiene Guidelines for Determining and Mitigating Traffic Noise Impacts to Residential Structures and County.

Stautins, Carl
2014 Warehouse & Forklift Noise Exposure – Noise Testing. November 4, 2014.

U.S. Department of Transportation
2006 FHWA Roadway Construction Noise Model User’s Guide. January. 35 Item Number: 1.

Page 963 of 2517 ends

Beyond Food Mart (Indian Canyon & Pierson)
Noise Impact Analysis
36 19543

APPENDICES
Appendix A List of Acronyms
Appendix B Glossary
Appendix C Noise Measurement Field Worksheets
Appendix D Construction Noise Calculations
Appendix E SoundPLAN Worksheets
Appendix F FHWA Worksheets
Appendix G Vibration Worksheets
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APPENDIX A

LIST OF ACRONYMS
Apx-2
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Term Definition
ADT
ANSI
CEQA
CNEL
D/E/N
dB
dBA or dB(A)
dBA/DD
dBA Leq
EPA
FHWA
L02,L08,L50,L90
DNL
Leq(x)
Leq
Lmax
Lmin
LOS C
OPR
PPV
RCNM
REMEL
RMS
Average Daily Traffic
American National Standard Institute
California Environmental Quality Act
Community Noise Equivalent Level
Day / Evening / Night
Decibel
Decibel "A-Weighted"
Decibel per Double Distance
Average Noise Level over a Period of Time
Environmental Protection Agency
Federal Highway Administration
A-weighted Noise Levels at 2 percent, 8 percent, 50 percent, and 90 percent, respectively, of the time period
Day-Night Average Noise Level
Equivalent Noise Level for '"x" period of time
Equivalent Noise Level
Maximum Level of Noise (measured using a sound level meter) Minimum Level of Noise (measured using a sound level meter) Level of Service C
California Governor's Office of Planning and Research
Peak Particle Velocities
Road Construction Noise Model
Reference Energy Mean Emission Level
Root Mean Square
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APPENDIX B

GLOSSARY
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Term Definition
Ambient Noise
Level
The all-encompassing noise environment associated with a given environment, at a specified time, usually a composite of sound from many sources, at many directions, near and far, in which usually no particular sound is dominant.

A-Weighted Sound
Level, dBA
The sound level obtained by use of A-weighting. The A-weighting filter de-emphasizes the very low and very high frequency components of the sound in a manner similar to the frequency response of the human ear.

CNEL
Community Noise Equivalent Level. CNEL is a weighted 24-hour noise level that is obtained by adding five decibels to sound levels in the evening (7:00 PM to 10:00 PM), and by adding ten decibels to sound levels at night (10:00 PM to 7:00 AM). This weighting accounts for the increased human sensitivity to noise during the evening and nighttime hours.

Decibel, dB
A logarithmic unit of noise level measurement that relates the energy of a noise source to that of a constant reference level; the number of decibels is 10 times the logarithm (to the base 10) of this ratio.

DNL, Ldn
Day Night Level. The DNL, or Ldn is a weighted 24-hour noise level that is obtained by adding ten decibels to sound levels at night (10:00 PM to 7:00 AM). This weighting accounts for the increased human sensitivity to noise during the nighttime hours.

Equivalent
Continuous Noise
Level, Leq
A level of steady state sound that in a stated time period, and a stated location, has the same A-weighted sound energy as the time-varying sound.

Fast/Slow Meter
Response
The fast and slow meter responses are different settings on a sound level meter. The fast response setting takes a measurement every 100 milliseconds, while a slow setting takes one every second.

Frequency, Hertz In a function periodic in time, the number of times that the quantity repeats itself in one second (i.e., the number of cycles per second).

L02, L08, L50, L90
The A-weighted noise levels that are equaled or exceeded by a fluctuating sound level, 2 percent, 8 percent, 50 percent, and 90 percent of a stated time period, respectively.

Lmax, Lmin
Lmax is the RMS (root mean squared) maximum level of a noise source or environment measured on a sound level meter, during a designated time interval, using fast meter response. Lmin is the minimum level.

Offensive/
Offending/Intrusive
Noise
The noise that intrudes over and above the existing ambient noise at a given location.

The relative intrusiveness of sound depends on its amplitude, duration, frequency, and time of occurrence, and tonal information content as well as the prevailing ambient noise level.

Root Mean Square
(RMS)
A measure of the magnitude of a varying noise source quantity. The name derives from the calculation of the square root of the mean of the squares of the values. It can be calculated from either a series of lone values or a continuous varying function.

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APPENDIX C

NOISE MEASUREMENT FIELD WORKSHEETS
Apx-6
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Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 77 deg F Wind: 10mph Humidity: 12% Terrain:

Start Time: 1:26 PM End Time: 1:41 PM Run Time:

Leq: 52.9 dB Traffic ambiance from vehicles traveling along Pierson Blvd ( ~500' N ) & Indian Lmax 68.5 dB Canyon Drive ( ~1,500' E ).

L2 62.7 dB Occasional overhead air traffic ( Palm Springs Airport ). Bird song. Palm tree L8 56.8 dB leaf rustle in 10 mph breeze. Residential ambiance, distant dogs barking.

L25 51.2 dB
L50 48.8 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:
11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies, sunny. Sunset: 5:58 PM
Larson Davis CA 250
STNM1: Measurement taken along the north side of Paseo Yucca Vista, ~150' E of residence 63655 Paseo Yucca Vista. Adjacent: Mostly vacant land surrounding, with Paseo Yucca Vista to north and single-family residences to south. Pierson Blvd (running E-W) ~500' N & Indian Canyon Drive (running N-S) ~1,500' E of STNM1.

October 27, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: 63655 Paseo Yucca Vista, Desert Hot Springs, CA 92240 STNM1 Run Time: 15 minutes ( 1 x 15 minutes )
19543
Apx-7
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Noise Measurement
Field Data
PHOTOS:

STNM1 looking SW asross Paseo Yucca Vista towards residence 63655 Paseo Yucca STNM1 looking E down Paseo Yucca Vista towards Indian Canyon Drive intersection Vista, Desert Hot Springs. ( ~1,500' ).

Apx-8
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Summary
File Name on Meter LxT_Data.133.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location STNM1 33°57'35.99"N 116°33'0.16"W
Job Description 15 minute noise measurement ( 1 x 15 minutes ) Note
Measurement
Start 2022-10-27 13:26:46
Stop 2022-10-27 13:41:46
Duration 00:15:00.0
Run Time 00:15:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 13:26:12
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting C Weighting
OBA Max Spectrum At LMax
Overload 122.6 dB
Results
LAeq 52.9
LAE 82.4
EA 19.486 µPa²h
EA8 623.553 µPa²h
EA40 3.118 mPa²h
LApeak (max) 2022-10-27 13:30:13 87.9 dB
LASmax 2022-10-27 13:32:15 68.5 dB
LASmin 2022-10-27 13:37:20 38.2 dB
Statistics
LCeq 74.4 dB LA2.00 62.7 dB
LAeq 52.9 dB LA8.00 56.8 dB
LCeq - LAeq 21.5 dB LA25.00 51.2 dB
LAIeq 57.1 dB LA50.00 48.8 dB
LAeq 52.9 dB LA66.60 47.2 dB
LAIeq - LAeq 4.2 dB LA90.00 44.4 dB
Overload Count 0
LxT_0003099-20221027 132646-LxT_Data.133.ldbin
Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd ), Desert Hot Springs.

Apx-9
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Page 976 of 2517 ends

Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 77 deg F Wind: 10mph Humidity: 12% Terrain:

Start Time: 2:00 PM End Time: 2:15 PM Run Time:

Leq: 47.4 dB Traffic ambiance from vehicles traveling along Pierson Blvd ( ~640' S ) & Indian Lmax 65.6 dB Canyon Drive ( ~2,300' E ).

L2 56.6 dB Occasional overhead air traffic ( Palm Springs Airport ). Bird song.

L8 49.7 dB Leaf rustle in 10 mph breeze. Residential ambiance, distant dogs barking .

L25 46.0 dB
L50 42.5 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:

October 27, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: 11700 Western Ave, Desert Hot Springs, CA 92240.

STNM2 Run Time: 15 minutes ( 1 x 15 minutes )
19543
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies, sunny. Sunset: 5:58 PM
Larson Davis CA 250
STNM2: Measurement taken near SE corner of residential property 11700 Western Ave. Adjacent: Vacant land surrouding to NE, E, and South with single-family residential to NW. Western Ave ~320' W, Pierson Blvd ~640' S & Indian Canyon Drive ~2,300' E of STNM2.
11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Apx-14 Item Number: 1. Page 977 of 2517
Noise Measurement
Field Data
PHOTOS:

STNM2 looking WNW towards backyard of residential property 11700 Western Ave, STNM2 looking SSE from SE corner of residential property 11700 Western Ave, Desert Hot Springs. towards Pierson Blvd ( ~640' ).

Apx-15 Item Number: 1. Page 978 of 2517
Summary
File Name on Meter LxT_Data.134.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location STNM2 33°57'47.53"N 116°33'9.85"W
Job Description 15 minute noise measurement ( 1 x 15 minutes ) Note
Measurement
Start 2022-10-27 14:00:30
Stop 2022-10-27 14:15:30
Duration 00:15:00.0
Run Time 00:15:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 14:00:05
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting C Weighting
OBA Max Spectrum At LMax
Overload 122.8 dB
Results
LAeq 47.4
LAE 76.9
EA 5.448 µPa²h
EA8 174.323 µPa²h
EA40 871.613 µPa²h
LApeak (max) 2022-10-27 14:00:35 83.8 dB
LASmax 2022-10-27 14:00:49 65.6 dB
LASmin 2022-10-27 14:03:29 34.8 dB
Statistics
LCeq 77.2 dB LA2.00 56.6 dB
LAeq 47.4 dB LA8.00 49.7 dB
LCeq - LAeq 29.9 dB LA25.00 46.0 dB
LAIeq 51.6 dB LA50.00 42.5 dB
LAeq 47.4 dB LA66.60 40.8 dB
LAIeq - LAeq 4.2 dB LA90.00 38.7 dB
Overload Count 0
LxT_0003099-20221027 140030-LxT_Data.134.ldbin
Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd), Desert Hot Springs.

Apx-16
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Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 77 deg F Wind: 10mph Humidity: 12% Terrain:

Start Time: 2:37 PM End Time: 2:52 PM Run Time:

Leq: 42.6 dB Distant traffic ambiance from vehicles traveling along Pierson Blvd ( ~1,330' S ) & Lmax 54.4 dB Indian Canyon Drive ( ~1,760' E ).

L2 49.2 dB Occasional overhead air traffic ( Palm Springs Airport ). Bird song.

L8 46.6 dB Leaf rustle in 10 mph breeze. Residential ambiance, distant dogs barking .

L25 43.3 dB
L50 40.4 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:

October 27, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: 63680 Scenic Drive, Desert Hot Springs, CA 92240.

STNM3 Run Time: 15 minutes ( 1 x 15 minutes )
19543
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies, sunny. Sunset: 5:58 PM
Larson Davis CA 250
STNM3: Measurement taken near SE corner of residential property 63680 Scenic Drive. Adjacent: Vacant land surrouding to NE, E, & S with Scenic Drive adjacent to south and a single-family residence adjacent to the NW. Western Ave ~860' W, Pierson Blvd ~1,330' S & Indian Canyon Drive ~1,760' E of STNM3. 11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Apx-21 Item Number: 1. Page 984 of 2517
Noise Measurement
Field Data
PHOTOS:

STNM3 looking W down Scenic Drive towards Western Avenue intersection ( ~860' ), STNM3 looking E down unpaved Scenic Drive towards Indian Canyon Drive residence 63680 Scenic Drive, Desert Hot springs on the right. intersection ( ~1,760' ).

Apx-22 Item Number: 1. Page 985 of 2517
Summary
File Name on Meter LxT_Data.135.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location STNM3 33°57'54.65"N 116°33'3.80"W
Job Description 15 minute noise measurement ( 1 x 15 minutes ) Note
Measurement
Start 2022-10-27 14:37:21
Stop 2022-10-27 14:52:21
Duration 00:15:00.0
Run Time 00:15:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 14:36:46
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting C Weighting
OBA Max Spectrum At LMax
Overload 122.6 dB
Results
LAeq 42.6
LAE 72.1
EA 1.810 µPa²h
EA8 57.925 µPa²h
EA40 289.623 µPa²h
LApeak (max) 2022-10-27 14:43:04 86.9 dB
LASmax 2022-10-27 14:43:04 54.4 dB
LASmin 2022-10-27 14:43:02 34.1 dB
Statistics
LCeq 74.0 dB LA2.00 49.2 dB
LAeq 42.6 dB LA8.00 46.6 dB
LCeq - LAeq 31.5 dB LA25.00 43.3 dB
LAIeq 48.5 dB LA50.00 40.4 dB
LAeq 42.6 dB LA66.60 38.8 dB
LAIeq - LAeq 5.9 dB LA90.00 36.8 dB
Overload Count 0
LxT_0003099-20221027 143721-LxT_Data.135.ldbin
Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd), Desert Hot Springs.

Apx-23
Item Number: 1.

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Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 77 deg F Wind: 10mph Humidity: 12% Terrain:

Start Time: 3:13 PM End Time: 3:28 PM Run Time:

Leq: 45.2 dB Distant traffic ambiance from vehicles traveling along Pierson Blvd ( ~640' S of Lmax 60.1 dB STNM4 ).

L2 55.2 dB Occasional overhead air traffic ( Palm Springs Airport ). Bird song. Leaf rustle L8 48.7 dB in 10 mph breeze. Residential ambiance from Palm Estates, distant leaf blower.

L25 43.8 dB
L50 40.1 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:
11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies, sunny. Sunset: 5:58 PM
Larson Davis CA 250
STNM4: Measurement taken near NW corner of residential property 11750 Desert Terrace Way. Adjacent: Surrounded by vacant land to N, W, & S with single-family residence to SE/E and Palm Estates (mobile home park) further east. Desert Terrace Way adjacent to west. Pierson Blvd ~640' S & Indian Canyon Drive ~2,260' W of STNM4.

October 27, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: 11750 Desert Terrace Way, Desert Hot Springs, CA 92240.

STNM4 Run Time: 15 minutes ( 1 x 15 minutes )
19543
Apx-28 Item Number: 1. Page 991 of 2517
Noise Measurement
Field Data
PHOTOS:

STNM4 looking E across intersection between unnamed road & Desert Terrace Way. STNM4 looking S down Desert Terrace Way towards Pierson Blvd intersection Residence 11750 Desert Terrace Way, Desert Hot Springs on the right ( ~100' ). ( ~640' ).

Community Palm View Estates 64550 Pierson Blvd ~340' E of STNM4.

Apx-29 Item Number: 1. Page 992 of 2517
Summary
File Name on Meter LxT_Data.136.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location STNM4 33°57'47.53"N 116°32'15.01"W
Job Description 15 minute noise measurement ( 1 x 15 minutes ) Note
Measurement
Start 2022-10-27 15:13:31
Stop 2022-10-27 15:28:31
Duration 00:15:00.0
Run Time 00:15:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 15:13:08
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting C Weighting
OBA Max Spectrum At LMax
Overload 122.6 dB
Results
LAeq 45.2
LAE 74.8
EA 3.336 µPa²h
EA8 106.746 µPa²h
EA40 533.732 µPa²h
LApeak (max) 2022-10-27 15:13:58 81.0 dB
LASmax 2022-10-27 15:16:28 60.1 dB
LASmin 2022-10-27 15:27:26 32.5 dB
Statistics
LCeq 67.1 dB LA2.00 55.2 dB
LAeq 45.2 dB LA8.00 48.7 dB
LCeq - LAeq 21.8 dB LA25.00 43.8 dB
LAIeq 49.6 dB LA50.00 40.1 dB
LAeq 45.2 dB LA66.60 38.6 dB
LAIeq - LAeq 4.4 dB LA90.00 35.9 dB
Overload Count 0
LxT_0003099-20221027 151331-LxT_Data.136.ldbin
Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd), Desert Hot Apx-30
Item Number: 1.

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Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 77 deg F Wind: 8 mph Humidity: 12% Terrain:

Start Time: 4:32 PM End Time: 4:47 PM Run Time:

Leq: 66 dB Traffic noise from the 90 vehicles passing microphone traveling along Pierson Lmax 75.1 dB Blvd during measurement. Traffic ambiance from other roads.

L2 72.7 dB Occasional overhead air traffic ( Palm Springs Airport ). Leaf rustle due to 8 mph L8 70.7 dB breeze.

L25 67.7 dB
L50 63.4 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:
11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies, sunny. Sunset: 5:58 PM
Larson Davis CA 250
STNM5: Measurement taken at the NW corner of the parking lot associated with the church at 64565 Pierson Blvd. Adjacent: Pierson Blvd intersection with Lutheran Church Road to NW and church and associated parking lot to SE. Vacant land to west just past Lutheran Church Road and Palm View Estates (mobile home park) jus tnorth past Pierson Boulevard.

October 27, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: 64565 Pierson Boulevard, Desert Hot Springs, CA 92240 STNM5 Run Time: 15 minutes ( 1 x 15 minutes )
19543
Apx-35 Item Number: 1. Page 998 of 2517
Noise Measurement
Field Data
PHOTOS:

STNM5 looking NE from Lutheran Church Road across Pierson Boulevard STNM5 looking ESE from Lutheran Church Road across parking lot to church towards 64550 Pierson Boulevard, Palm View Estates. building 64565 Pierson Boulevard, Desert Hot Springs.

Apx-36 Item Number: 1. Page 999 of 2517
Summary
File Name on Meter LxT_Data.138.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location STNM5 33°57'40.72"N 116°32'10.50"W
Job Description 15 minute noise measurement ( 1 x 15 minutes ) Note
Measurement
Start 2022-10-27 16:32:36
Stop 2022-10-27 16:47:36
Duration 00:15:00.0
Run Time 00:15:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 16:32:11
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting C Weighting
OBA Max Spectrum At LMax
Overload 122.7 dB
Results
LAeq 66.0
LAE 95.6
EA 400.458 µPa²h
EA8 12.815 mPa²h
EA40 64.073 mPa²h
LApeak (max) 2022-10-27 16:47:29 92.9 dB
LASmax 2022-10-27 16:46:33 75.1 dB
LASmin 2022-10-27 16:37:40 40.2 dB
Statistics
LCeq 72.4 dB LA2.00 72.7 dB
LAeq 66.0 dB LA8.00 70.7 dB
LCeq - LAeq 6.3 dB LA25.00 67.7 dB
LAIeq 68.0 dB LA50.00 63.4 dB
LAeq 66.0 dB LA66.60 58.8 dB
LAIeq - LAeq 2.0 dB LA90.00 49.3 dB
Overload Count 0
LxT_0003099-20221027 163236-LxT_Data.138.ldbin
Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd), Desert Hot Springs.

Apx-37
Item Number: 1.

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Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 77 deg F Wind: 10mph Humidity: 12% Terrain:

Start Time: 3:56 PM End Time: 4:11 PM Run Time:

Leq: 59.5 dB Traffic noise from the 156 vehicles passing microphone traveling along Indian Lmax 76 dB Canyon Dr during measurement. Traffic ambiance from Pierson Blvd & other roads.

L2 65.0 dB Occasional overhead air traffic ( Palm Springs Airport ). Bird song. Leaf rustle L8 61.4 dB in 10 mph breeze.

L25 59.4 dB
L50 57.1 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:

October 27, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: Indian Canyon Drive & Pierson Blvd, Desert Hot Springs, CA 92240 STNM6 Run Time: 15 minutes ( 1 x 15 minutes )
19543
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies, sunny. Sunset: 5:58 PM
Larson Davis CA 250
STNM6: Measuremet taken along project site's northern property line.

Adjacent: Vacant land surrounding measurement site with Indian Canyon Drive ~130 ft E & the closest building ~650' S (12021 N Indian Canyon Dr at SW corner of Indian Canyon Dr & Pierson Blvd intersection).
11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Apx-42 Item Number: 1. Page 1005 of 2517
Noise Measurement
Field Data
PHOTOS:

STNM6 looking ENE towards Indian Canyon Drive ( ~130' ). STNM6 looking SSE towards Indian Canyon Drive & Pierson Boulevard intersection ( ~700' ) and building 12021 N Indian Canyon Drive, Desert Hot Springs.

Apx-43 Item Number: 1. Page 1006 of 2517
Summary
File Name on Meter LxT_Data.137.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location STNM6 33°57'47.85"N 116°32'43.97"W
Job Description 15 minute noise measurement ( 1 x 15 minutes ) Note
Measurement
Start 2022-10-27 15:56:57
Stop 2022-10-27 16:11:57
Duration 00:15:00.0
Run Time 00:15:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 15:56:35
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting C Weighting
OBA Max Spectrum At LMax
Overload 122.6 dB
Results
LAeq 59.5
LAE 89.1
EA 89.434 µPa²h
EA8 2.862 mPa²h
EA40 14.309 mPa²h
LApeak (max) 2022-10-27 16:00:35 94.9 dB
LASmax 2022-10-27 16:00:35 76.0 dB
LASmin 2022-10-27 16:07:00 40.0 dB
Statistics
LCeq 70.8 dB LA2.00 65.0 dB
LAeq 59.5 dB LA8.00 61.4 dB
LCeq - LAeq 11.3 dB LA25.00 59.4 dB
LAIeq 61.2 dB LA50.00 57.1 dB
LAeq 59.5 dB LA66.60 55.5 dB
LAIeq - LAeq 1.7 dB LA90.00 51.1 dB
Overload Count 0
LxT_0003099-20221027 155657-LxT_Data.137.ldbin
Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd), Desert Hot Apx-44
Item Number: 1.

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Apx-45
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Noise Measurement
Field Data
Project Name: Beyond Food Mart ( Indian Canyon Drive & Pierson Boulevard ), City of Desert Hot Springs. Date:

Project #:

Noise Measurement #: Technician:

Weather: Settings: SLOW FAST
Temperature: 57-82 deg F Wind: 0-10mph Humidity: 12-30% Terrain:

Start Time: 7:00 PM End Time: 7:00 PM Run Time:

Leq: 57.8 dB Traffic noise from vehicles passing microphone traveling along Indian Canyon Dr.

Lmax 86.8 dB Traffic ambiance from Pierson Blvd & other roads.

L2 64.7 dB Occasional overhead air traffic ( Palm Springs Airport ). Bird song by day. Leaf rustle L8 61.6 dB due to breeze.

L25 58.1 dB
L50 53.3 dB
NOISE METER: CALIBRATOR:

MAKE: MAKE:

MODEL: MODEL:

SERIAL NUMBER: SERIAL NUMBER:

FACTORY CALIBRATION DATE:

FIELD CALIBRATION DATE:
11/17/2021 11/18/2021
10/27/2022
FACTORY CALIBRATION DATE:

Larson Davis
LXT1
3099
Larson Davis
CA 250
2723
Primary Noise Source:

Secondary Noise Sources:

Flat
Site Description (Type of Existing Land Use and any other notable features):

SoundTrack LXT Class 1
Clear skies. Sunset/rise: 5:58 PM/ 7:02AM
Larson Davis CA 250
LTNM1: Measurment taken in the northenr portion of the project site ~150' W of Indian Canyon Drive & 510' N of Pierson Blvd. Adjacent: Vacant land surrounding measurement site, with the closest building, 12021 N Indian Canyon Dr, at the SW corner of Indian Canyon Dr & Pierson Blvd. Indian Canyon Drive to east.

October 27-28, 2022
Ian Edward Gallagher
Nearest Address or Cross Street: Indian Canyon Drive & Pierson Blvd, Desert Hot Springs, CA 92240 LTNM1 Run Time: 24 hours ( 24 x 1 hours )
19543
Apx-49 Item Number: 1. Page 1012 of 2517
Noise Measurement
Field Data
PHOTOS:

LTNM1 situated in bush ~4.5' above ground, looking E towards Indian LTNM1 looking SSE towards Indian Canyon Drive & Pierson Boulevard intersection Canyon Drive ( ~150' to E). ( ~560' SSE).

Apx-50 Item Number: 1. Page 1013 of 2517
Summary
File Name on Meter LxT_Data.140.s
File Name on PC
Serial Number 0003099
Model SoundTrack LxT®
Firmware Version 2.404
User Ian Edward Gallagher
Location LTNM1 33°57'46.48"N 116°32'44.08"W
Job Description 24 hour noise measurement ( 24 x 1 hours ) Note Ganddini Project 19543 Beyond Food Mart ( Indian Canyon Dr & Pierson Blvd), Desert Hot Springs.

Measurement
Start 2022-10-27 19:00:00
Stop 2022-10-28 19:00:00
Duration 24:00:00.0
Run Time 24:00:00.0
Pause 00:00:00.0
Pre-Calibration 2022-10-27 18:14:25
Post-Calibration None
Overall Settings
RMS Weight A Weighting
Peak Weight A Weighting
Detector Slow
Preamplifier PRMLxT1L
Microphone Correction Off
Integration Method Linear
OBA Range Normal
OBA Bandwidth 1/1 and 1/3
OBA Frequency Weighting A Weighting
OBA Max Spectrum Bin Max
Overload 122.6 dB
Results
LAeq 57.8
LAE 107.2
EA 5.789 mPa²h
EA8 1.930 mPa²h
EA40 9.648 mPa²h
LApeak (max) 2022-10-28 14:30:07 104.3 dB
LASmax 2022-10-28 14:30:07 86.8 dB
LASmin 2022-10-28 01:25:23 23.0 dB
Statistics
LCeq 68.0 dB LA2.00 64.7 dB
LAeq 57.8 dB LA8.00 61.6 dB
LCeq - LAeq 10.2 dB LA25.00 58.1 dB
LAIeq 59.2 dB LA50.00 53.3 dB
LAeq 57.8 dB LA90.00 37.4 dB
LAIeq - LAeq 1.4 dB LA99.00 27.4 dB
Overload Count 0
LxT_0003099-20221027 190000-LxT_Data.140.ldbin
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Record # Date Time Run Duration Run Time Pause LAeq LASmin LASmin Time LASmax LASmax Time LAS2.00 LAS8.00 LAS25.00 LAS50.00 LAS90.00 LAS99.00 1 2022-10-27 19:00:00 01:00:00.0 01:00:00.0 00:00:00.0 59.0 35.0 19:48:23 80.5 19:36:06 65.6 61.9 59.1 55.6 43.6 38.2 2 2022-10-27 20:00:00 01:00:00.0 01:00:00.0 00:00:00.0 56.8 32.8 20:50:37 78.6 20:59:36 63.8 60.8 57.5 52.7 40.0 34.9 3 2022-10-27 21:00:00 01:00:00.0 01:00:00.0 00:00:00.0 59.6 32.4 21:32:36 86.0 21:23:43 63.9 60.9 57.5 52.4 40.1 35.0 4 2022-10-27 22:00:00 01:00:00.0 01:00:00.0 00:00:00.0 56.0 29.4 22:29:45 79.7 22:41:16 62.2 59.5 56.2 51.1 39.4 32.3 5 2022-10-27 23:00:00 01:00:00.0 01:00:00.0 00:00:00.0 52.8 27.7 23:12:31 68.3 23:14:20 61.2 57.9 53.2 44.6 33.7 29.6 6 2022-10-28 00:00:00 01:00:00.0 01:00:00.0 00:00:00.0 50.8 23.7 00:38:29 65.5 00:42:32 60.6 56.9 48.3 39.0 28.7 24.7 7 2022-10-28 01:00:00 01:00:00.0 01:00:00.0 00:00:00.0 50.4 23.0 01:25:23 68.0 01:17:44 60.3 55.3 44.9 38.2 29.3 24.3 8 2022-10-28 02:00:00 01:00:00.0 01:00:00.0 00:00:00.0 50.0 24.9 02:25:17 67.8 02:02:50 60.4 55.8 45.9 37.6 29.1 26.6 9 2022-10-28 03:00:00 01:00:00.0 01:00:00.0 00:00:00.0 51.1 23.2 03:17:48 70.9 03:34:34 60.5 56.5 47.2 40.8 28.2 24.6 10 2022-10-28 04:00:00 01:00:00.0 01:00:00.0 00:00:00.0 53.5 27.5 04:34:38 70.7 04:11:36 62.7 58.8 51.4 45.0 34.2 29.8 11 2022-10-28 05:00:00 01:00:00.0 01:00:00.0 00:00:00.0 58.0 25.9 05:06:44 70.7 05:56:59 65.8 62.9 59.0 53.2 42.2 29.4 12 2022-10-28 06:00:00 01:00:00.0 01:00:00.0 00:00:00.0 59.4 39.4 06:24:36 72.6 06:58:26 66.1 63.7 60.7 56.9 47.4 41.5 13 2022-10-28 07:00:00 01:00:00.0 01:00:00.0 00:00:00.0 59.9 43.3 07:29:08 72.8 07:13:13 65.7 63.6 61.1 58.3 50.5 45.6 14 2022-10-28 08:00:00 01:00:00.0 01:00:00.0 00:00:00.0 57.5 35.0 08:53:14 78.0 08:54:33 64.0 60.6 58.1 54.5 44.5 39.1 15 2022-10-28 09:00:00 01:00:00.0 01:00:00.0 00:00:00.0 56.0 35.3 09:54:20 76.8 09:00:36 62.6 60.3 57.1 52.5 42.3 37.8 16 2022-10-28 10:00:00 01:00:00.0 01:00:00.0 00:00:00.0 58.0 32.5 10:33:19 80.8 10:39:48 65.0 61.2 57.9 54.0 43.6 38.5 17 2022-10-28 11:00:00 01:00:00.0 01:00:00.0 00:00:00.0 56.7 38.5 11:59:58 72.9 11:42:52 63.6 60.6 57.5 53.4 44.3 41.4 18 2022-10-28 12:00:00 01:00:00.0 01:00:00.0 00:00:00.0 57.0 37.2 12:27:40 76.4 12:49:43 64.0 60.9 58.0 54.1 43.3 39.6 19 2022-10-28 13:00:00 01:00:00.0 01:00:00.0 00:00:00.0 58.3 34.4 13:04:20 79.8 13:15:19 64.3 61.0 58.2 54.5 43.9 38.1 20 2022-10-28 14:00:00 01:00:00.0 01:00:00.0 00:00:00.0 59.8 38.6 14:01:15 86.8 14:30:07 63.7 61.0 58.3 55.4 45.9 40.2 21 2022-10-28 15:00:00 01:00:00.0 01:00:00.0 00:00:00.0 59.6 38.2 15:42:26 81.2 15:10:10 66.1 61.9 59.2 56.7 46.8 41.4 22 2022-10-28 16:00:00 01:00:00.0 01:00:00.0 00:00:00.0 60.3 42.7 16:47:26 79.0 16:24:00 67.6 62.6 60.1 57.6 50.2 44.8 23 2022-10-28 17:00:00 01:00:00.0 01:00:00.0 00:00:00.0 60.4 43.9 17:07:15 82.3 17:27:07 66.0 62.5 60.0 57.9 51.9 48.0 24 2022-10-28 18:00:00 01:00:00.0 01:00:00.0 00:00:00.0 61.0 47.0 18:03:31 75.8 18:13:48 66.5 64.3 62.0 59.8 53.5 49.7 Apx-52 Item Number: 1. Page 1015 of 2517

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Apx-55
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Item Number: 1.

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APPENDIX D

CONSTRUCTION NOISE CALCULATIONS
Apx-57
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Page 1020 of 2517 ends

Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA1 Distance to Receptor3 Item Usage Percent Usage Factor Dist. Correction dB Usage Adj. dB Receptor Item Lmax, dBA Receptor Item Leq, dBA Rubber Tired Dozers 3 82 610 40 1.20 -21.7 0.8 60.3 61.1 Tractors/Loaders/Backhoes 4 84 610 40 1.60 -21.7 2.0 62.3 64.3 Log Sum 66.0
Excavator 1 81 610 40 0.40 -21.7 -4.0 59.3 55.3
Rubber Tired Dozers 1 82 610 40 0.40 -21.7 -4.0 60.3 56.3 Tractors/Loaders/Backhoes 3 84 610 40 1.20 -21.7 0.8 62.3 63.1 Graders 1 85 610 40 0.40 -21.7 -4.0 63.3 59.3
Log Sum 65.6
Cranes 1 81 610 16 0.16 -21.7 -8.0 59.3 51.3
Forklifts2
3 48 610 40 1.20 -21.7 0.8 26.3 27.1
Generator Sets 1 81 610 50 0.50 -21.7 -3.0 59.3 56.3
Welders 1 74 610 40 0.40 -21.7 -4.0 52.3 48.3
Tractors/Loaders/Backhoes 3 84 610 40 1.20 -21.7 0.8 62.3 63.1 Log Sum 64.2
Cement and Mortar Mixers 2 79 610 40 0.80 -21.7 -1.0 57.3 56.3 Pavers 1 77 610 50 0.50 -21.7 -3.0 55.3 52.3
Paving Equipment 2 77 610 50 1.00 -21.7 0.0 55.3 55.3
Rollers 2 80 610 20 0.40 -21.7 -4.0 58.3 54.3
Tractors/Loaders/Backhoes 1 84 610 40 0.40 -21.7 -4.0 62.3 58.3 Log Sum 62.7
Air Compressors 1 78 610 40 0.40 -21.7 -4.0 56.3 52.3
Log Sum 52.3
Notes:
(1) Source: Referenced noise levels from the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (September 2018) and the FHWA Roadway Construction Noise Model User's Guide (January 2006) (2) Source: SoundPLAN reference list.
(3) Distance to receptor calculated from center of site. Construction noise projected from the center of the project site to nearest sensitive use (property line).

Architectural Coating
Building Construction
Paving
Receptor - Residential Uses to Southwest (63655 Paseo Yucca Vista, Desert Hot Springs) Site Preparation
Grading
Apx-58 Item Number: 1. Page 1021 of 2517
Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA1 Distance to Receptor3 Item Usage Percent Usage Factor Dist. Correction dB Usage Adj. dB Receptor Item Lmax, dBA Receptor Item Leq, dBA Rubber Tired Dozers 3 82 1630 40 1.20 -30.3 0.8 51.7 52.5 Tractors/Loaders/Backhoes 4 84 1630 40 1.60 -30.3 2.0 53.7 55.8 Log Sum 57.5
Excavator 1 81 1630 40 0.40 -30.3 -4.0 50.7 46.8
Rubber Tired Dozers 1 82 1630 40 0.40 -30.3 -4.0 51.7 47.8 Tractors/Loaders/Backhoes 3 84 1630 40 1.20 -30.3 0.8 53.7 54.5 Graders 1 85 1630 40 0.40 -30.3 -4.0 54.7 50.8
Log Sum 57.1
Cranes 1 81 1630 16 0.16 -30.3 -8.0 50.7 42.8
Forklifts2
3 48 1630 40 1.20 -30.3 0.8 17.7 18.5
Generator Sets 1 81 1630 50 0.50 -30.3 -3.0 50.7 47.7
Welders 1 74 1630 40 0.40 -30.3 -4.0 43.7 39.8
Tractors/Loaders/Backhoes 3 84 1630 40 1.20 -30.3 0.8 53.7 54.5 Log Sum 55.7
Cement and Mortar Mixers 2 79 1630 40 0.80 -30.3 -1.0 48.7 47.8 Pavers 1 77 1630 50 0.50 -30.3 -3.0 46.7 43.7
Paving Equipment 2 77 1630 50 1.00 -30.3 0.0 46.7 46.7
Rollers 2 80 1630 20 0.40 -30.3 -4.0 49.7 45.8
Tractors/Loaders/Backhoes 1 84 1630 40 0.40 -30.3 -4.0 53.7 49.8 Log Sum 54.2
Air Compressors 1 78 1630 40 0.40 -30.3 -4.0 47.7 43.8
Log Sum 43.8
Notes:
(1) Source: Referenced noise levels from the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (September 2018) and the FHWA Roadway Construction Noise Model User's Guide (January 2006) (2) Source: SoundPLAN reference list.
(3) Distance to receptor calculated from center of site. Construction noise projected from the center of the project site to nearest sensitive use (property line).

Receptor - Residential Uses to Southwest (63655 Paseo Yucca Vista, Desert Hot Springs) Grading
Architectural Coating
Site Preparation
Building Construction
Paving
Apx-59 Item Number: 1. Page 1022 of 2517
Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA1 Distance to Receptor3 Item Usage Percent Usage Factor Dist. Correction dB Usage Adj. dB Receptor Item Lmax, dBA Receptor Item Leq, dBA Rubber Tired Dozers 3 82 2171 40 1.20 -32.8 0.8 49.2 50.0 Tractors/Loaders/Backhoes 4 84 2171 40 1.60 -32.8 2.0 51.2 53.3 Log Sum 55.0
Excavator 1 81 2171 40 0.40 -32.8 -4.0 48.2 44.3
Rubber Tired Dozers 1 82 2171 40 0.40 -32.8 -4.0 49.2 45.3 Tractors/Loaders/Backhoes 3 84 2171 40 1.20 -32.8 0.8 51.2 52.0 Graders 1 85 2171 40 0.40 -32.8 -4.0 52.2 48.3
Log Sum 54.6
Cranes 1 81 2171 16 0.16 -32.8 -8.0 48.2 40.3
Forklifts2
3 48 2171 40 1.20 -32.8 0.8 15.2 16.0
Generator Sets 1 81 2171 50 0.50 -32.8 -3.0 48.2 45.2
Welders 1 74 2171 40 0.40 -32.8 -4.0 41.2 37.3
Tractors/Loaders/Backhoes 3 84 2171 40 1.20 -32.8 0.8 51.2 52.0 Log Sum 53.2
Cement and Mortar Mixers 2 79 2171 40 0.80 -32.8 -1.0 46.2 45.3 Pavers 1 77 2171 50 0.50 -32.8 -3.0 44.2 41.2
Paving Equipment 2 77 2171 50 1.00 -32.8 0.0 44.2 44.2
Rollers 2 80 2171 20 0.40 -32.8 -4.0 47.2 43.3
Tractors/Loaders/Backhoes 1 84 2171 40 0.40 -32.8 -4.0 51.2 47.3 Log Sum 51.7
Air Compressors 1 78 2171 40 0.40 -32.8 -4.0 45.2 41.3
Log Sum 41.3
Notes:
(1) Source: Referenced noise levels from the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (September 2018) and the FHWA Roadway Construction Noise Model User's Guide (January 2006) (2) Source: SoundPLAN reference list.
(3) Distance to receptor calculated from center of site. Construction noise projected from the center of the project site to nearest sensitive use (property line).

Receptor - Residential Uses to Northwest (11700 Western Avenue, Desert Hot Springs) Site Preparation
Grading
Architectural Coating
Building Construction
Paving
Apx-60 Item Number: 1. Page 1023 of 2517
Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA1 Distance to Receptor3 Item Usage Percent Usage Factor Dist. Correction dB Usage Adj. dB Receptor Item Lmax, dBA Receptor Item Leq, dBA Rubber Tired Dozers 3 82 1931 40 1.20 -31.7 0.8 50.3 51.1 Tractors/Loaders/Backhoes 4 84 1931 40 1.60 -31.7 2.0 52.3 54.3 Log Sum 56.0
Excavator 1 81 1931 40 0.40 -31.7 -4.0 49.3 45.3
Rubber Tired Dozers 1 82 1931 40 0.40 -31.7 -4.0 50.3 46.3 Tractors/Loaders/Backhoes 3 84 1931 40 1.20 -31.7 0.8 52.3 53.1 Graders 1 85 1931 40 0.40 -31.7 -4.0 53.3 49.3
Log Sum 55.6
Cranes 1 81 1931 16 0.16 -31.7 -8.0 49.3 41.3
Forklifts2
3 48 1931 40 1.20 -31.7 0.8 16.3 17.1
Generator Sets 1 81 1931 50 0.50 -31.7 -3.0 49.3 46.3
Welders 1 74 1931 40 0.40 -31.7 -4.0 42.3 38.3
Tractors/Loaders/Backhoes 3 84 1931 40 1.20 -31.7 0.8 52.3 53.1 Log Sum 54.2
Cement and Mortar Mixers 2 79 1931 40 0.80 -31.7 -1.0 47.3 46.3 Pavers 1 77 1931 50 0.50 -31.7 -3.0 45.3 42.3
Paving Equipment 2 77 1931 50 1.00 -31.7 0.0 45.3 45.3
Rollers 2 80 1931 20 0.40 -31.7 -4.0 48.3 44.3
Tractors/Loaders/Backhoes 1 84 1931 40 0.40 -31.7 -4.0 52.3 48.3 Log Sum 52.7
Air Compressors 1 78 1931 40 0.40 -31.7 -4.0 46.3 42.3
Log Sum 42.3
Notes:
(1) Source: Referenced noise levels from the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (September 2018) and the FHWA Roadway Construction Noise Model User's Guide (January 2006) (2) Source: SoundPLAN reference list.
(3) Distance to receptor calculated from center of site. Construction noise projected from the center of the project site to nearest sensitive use (property line).

Receptor - Residential Uses to Northwest (63680 Scenic Drive, Desert Hot Springs) Site Preparation
Grading
Architectural Coating
Building Construction
Paving
Apx-61 Item Number: 1. Page 1024 of 2517
Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA1 Distance to Receptor3 Item Usage Percent Usage Factor Dist. Correction dB Usage Adj. dB Receptor Item Lmax, dBA Receptor Item Leq, dBA Rubber Tired Dozers 3 82 2516 40 1.20 -34.0 0.8 48.0 48.8 Tractors/Loaders/Backhoes 4 84 2516 40 1.60 -34.0 2.0 50.0 52.0 Log Sum 53.7
Excavator 1 81 2516 40 0.40 -34.0 -4.0 47.0 43.0
Rubber Tired Dozers 1 82 2516 40 0.40 -34.0 -4.0 48.0 44.0 Tractors/Loaders/Backhoes 3 84 2516 40 1.20 -34.0 0.8 50.0 50.8 Graders 1 85 2516 40 0.40 -34.0 -4.0 51.0 47.0
Log Sum 53.3
Cranes 1 81 2516 16 0.16 -34.0 -8.0 47.0 39.0
Forklifts2
3 48 2516 40 1.20 -34.0 0.8 14.0 14.8
Generator Sets 1 81 2516 50 0.50 -34.0 -3.0 47.0 44.0
Welders 1 74 2516 40 0.40 -34.0 -4.0 40.0 36.0
Tractors/Loaders/Backhoes 3 84 2516 40 1.20 -34.0 0.8 50.0 50.8 Log Sum 51.9
Cement and Mortar Mixers 2 79 2516 40 0.80 -34.0 -1.0 45.0 44.0 Pavers 1 77 2516 50 0.50 -34.0 -3.0 43.0 40.0
Paving Equipment 2 77 2516 50 1.00 -34.0 0.0 43.0 43.0
Rollers 2 80 2516 20 0.40 -34.0 -4.0 46.0 42.0
Tractors/Loaders/Backhoes 1 84 2516 40 0.40 -34.0 -4.0 50.0 46.0 Log Sum 50.4
Air Compressors 1 78 2516 40 0.40 -34.0 -4.0 44.0 40.0
Log Sum 40.0
Notes:
(1) Source: Referenced noise levels from the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (September 2018) and the FHWA Roadway Construction Noise Model User's Guide (January 2006) (2) Source: SoundPLAN reference list.
(3) Distance to receptor calculated from center of site. Construction noise projected from the center of the project site to nearest sensitive use (property line).

Receptor - Residential Uses to East (11750 Desert Terrace Way, Desert Hot Springs) Site Preparation
Grading
Architectural Coating
Building Construction
Paving
Apx-62 Item Number: 1. Page 1025 of 2517
Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA1 Distance to Receptor3 Item Usage Percent Usage Factor Dist. Correction dB Usage Adj. dB Receptor Item Lmax, dBA Receptor Item Leq, dBA Rubber Tired Dozers 3 82 2830 40 1.20 -35.1 0.8 46.9 47.7 Tractors/Loaders/Backhoes 4 84 2830 40 1.60 -35.1 2.0 48.9 51.0 Log Sum 52.7
Excavator 1 81 2830 40 0.40 -35.1 -4.0 45.9 42.0
Rubber Tired Dozers 1 82 2830 40 0.40 -35.1 -4.0 46.9 43.0 Tractors/Loaders/Backhoes 3 84 2830 40 1.20 -35.1 0.8 48.9 49.7 Graders 1 85 2830 40 0.40 -35.1 -4.0 49.9 46.0
Log Sum 52.3
Cranes 1 81 2830 16 0.16 -35.1 -8.0 45.9 38.0
Forklifts2
3 48 2830 40 1.20 -35.1 0.8 12.9 13.7
Generator Sets 1 81 2830 50 0.50 -35.1 -3.0 45.9 42.9
Welders 1 74 2830 40 0.40 -35.1 -4.0 38.9 35.0
Tractors/Loaders/Backhoes 3 84 2830 40 1.20 -35.1 0.8 48.9 49.7 Log Sum 50.9
Cement and Mortar Mixers 2 79 2830 40 0.80 -35.1 -1.0 43.9 43.0 Pavers 1 77 2830 50 0.50 -35.1 -3.0 41.9 38.9
Paving Equipment 2 77 2830 50 1.00 -35.1 0.0 41.9 41.9
Rollers 2 80 2830 20 0.40 -35.1 -4.0 44.9 41.0
Tractors/Loaders/Backhoes 1 84 2830 40 0.40 -35.1 -4.0 48.9 45.0 Log Sum 49.4
Air Compressors 1 78 2830 40 0.40 -35.1 -4.0 42.9 39.0
Log Sum 39.0
Notes:
(1) Source: Referenced noise levels from the Federal Transit Administration (FTA) Transit Noise and Vibration Impact Assessment Manual (September 2018) and the FHWA Roadway Construction Noise Model User's Guide (January 2006) (2) Source: SoundPLAN reference list.
(3) Distance to receptor calculated from center of site. Construction noise projected from the center of the project site to nearest sensitive use (property line).

Receptor - Church use to Southeast (64565 Pierson Boulevard, Desert Hot Springs) Site Preparation
Grading
Architectural Coating
Building Construction
Paving
Apx-63 Item Number: 1. Page 1026 of 2517

APPENDIX E

SOUNDPLAN WORKSHEETS
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Page 1027 of 2517 ends

Frequency spectrum [dB(A)] Corrections
Source name ReferenceLevel 31 40 50 63 80 100125160200250315400500630 800 1 1.3 1.6 2 2.5 3.2 4 5 6.3 8 10 12.516 CwallCICT dB(A)Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz kHzkHzkHz kHz kHz kHzkHzkHzkHzkHzkHzkHzkHzdB dBdB Que-1 Lw/m Day50.0 - - -
Que-2 Lw/m Day50.0 - - -
Que-3 Lw/m Day50.0 - - -
Fueling Area Lw/m² Day60.5 - - - - - - - - - - - - 60.5 - - - - - - - - - - - - - - - - - - Loading/Unloading 1 Lw/unit Day80.0 - - - 47.050.754.057.059.761.864.166.168.570.171.472.273.073.673.874.074.174.374.173.773.072.0 - - - - - - Loading/Unloading 2 Lw/unit Day80.0 - - - 47.050.754.057.059.761.864.166.168.570.171.472.273.073.673.874.074.174.374.173.773.072.0 - - - - - - Vaccum 1 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Vaccum 2 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Vaccum 3 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Vaccum 4 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Vaccum 5 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Vaccum 6 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Vaccum 7 Lw/unit Day84.8 - - - 67.671.364.567.570.265.768.070.067.669.270.575.976.777.382.082.282.374.974.774.376.475.4 - - - - - - Nozzle 1 Lw/unit Day103.9 - - - 74.678.381.484.487.195.097.399.398.199.7101.096.397.197.795.495.695.789.689.489.081.280.2 - - - - - - Nozzle 2 Lw/unit Day103.9 - - - 86.790.483.686.689.384.887.189.186.788.389.695.095.896.4101.101.3101.494.093.893.495.594.5 - - - - - - Nozzle 3 Lw/unit Day103.9 - - - 86.790.483.686.689.384.887.189.186.788.389.695.095.896.4101.101.3101.494.093.893.495.594.5 - - - - - - Nozzle 4 Lw/unit Day103.9 - - - 86.790.483.686.689.384.887.189.186.788.389.695.095.896.4101.101.3101.494.093.893.495.594.5 - - - - - - HVAC 1 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 2 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 3 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 4 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 5 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 6 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 7 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 8 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 9 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 10 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 11 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 12 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 13 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - HVAC 14 Lw/unit Day78.7 42.547.342.546.550.256.559.562.262.264.566.556.958.559.868.769.570.171.371.571.670.770.570.173.572.571.174.872.5 - - - Air/Water Lw/unit Day67.7 - - - 44.848.544.947.950.653.155.457.462.263.865.162.263.063.658.058.258.355.255.054.648.947.9 - - - - - - Speaker 1 Lw/unit Day70.0 - - - - - - - - - - - - 70.0 - - - - - - - - - - - - - - - - - - Speaker 2 Lw/unit Day70.0 - - - - - - - - - - - - 70.0 - - - - - - - - - - - - - - - - - - Speaker 3 Lw/unit Day70.0 - - - - - - - - - - - - 70.0 - - - - - - - - - - - - - - - - - - Speaker 4 Lw/unit Day70.0 - - - - - - - - - - - - 70.0 - - - - - - - - - - - - - - - - - - Noise emissions of industry sources
GANDDINI GROUP, INC. 550 Parkcenter Drive, Suite 202 Santa Ana CA 92705 USA Apx-65
Item Number: 1.

Page 1028 of 2517 ends

Movements Separated Lw,ref
Name Parking lot type Size per hour Road surface method Day Evening Night dB(A)
P-1 Visitors and staff 21 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 78.9 P-2 Visitors and staff 4 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 69.0 P-3 Visitors and staff 9 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 72.5 P-4 Visitors and staff 15 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 76.7 P-5 Visitors and staff 8 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 72.0 P-6 Visitors and staff 9 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 72.5 P-7 Visitors and staff 3 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 67.8 P-8 Visitors and staff 9 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 72.5 P-9 Visitors and staff 7 Parking bays 2.300 0.000 0.000 Asphaltic driving lanes no 71.5 Noise emissions of parking lot traffic
GANDDINI GROUP, INC. 550 Parkcenter Drive, Suite 202 Santa Ana CA 92705 USA Apx-66
Item Number: 1.

Page 1029 of 2517 ends

Building Limit Level w/o NP Level w NP Difference Conflict No. Receiver name side Floor Day Day Day Day Day
dB(A) dB(A) dB(A) dB dB
1 1 - EG - 31.2 29.6 -1.6 -
2 2 - EG - 36.6 34.3 -2.3 -
3 3 - EG - 29.7 28.2 -1.5 -
4 4 - EG - 35.2 35.2 0.0 -
5 5 - EG - 33.7 33.7 0.0 -
6 6 - EG - 46.1 42.0 -4.0 -
7 7 - EG - 57.9 57.9 0.0 -
8 8 - EG - 68.7 63.5 -5.2 -
9 9 - EG - 52.8 52.8 0.0 -
10 10 - EG - 48.6 48.7 0.0 -
Receiver list
GANDDINI GROUP, INC. 550 Parkcenter Drive, Suite 202 Santa Ana CA 92705 USA Apx-67
Item Number: 1.

Page 1030 of 2517 ends

APPENDIX F

FHWA WORKSHEETS
Apx-68
Item Number: 1.

Page 1031 of 2517 ends

:Id ADT 500
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.56 13.96 10.49 97.40 Distance 36
Medium Trucks 48.91 2.17 48.91 1.84 Left Angle -90
Heavy Trucks 47.30 5.41 47.30 0.74 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 30.66 0.37 0.15 22.66 0.07 0.07 5.68 0.50 0.19 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 7.57 -11.56 -15.66 6.26 -19.06 -19.05 0.25 -10.31 -14.41 Distance 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 55.05 43.59 43.72 53.73 36.09 40.32 47.72 44.84 44.97 DAY LEQ 55.64 EVENING LEQ 54.00 NIGHT LEQ 50.83
F CNEL 58.67 Day hour 89.00
DAY LEQ 55.64 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside light truck mix.

Noise Parameters
North of Pierson Boulevard
Existing Traffic Noise
1 Vehicle Distribution (Light Truck Mix)
Karen Avenue
Daytime Evening Night
:Segment
Apx-69 Item Number: 1. Page 1032 of 2517
:Id ADT 740
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.56 13.96 10.49 97.40 Distance 36
Medium Trucks 48.91 2.17 48.91 1.84 Left Angle -90
Heavy Trucks 47.30 5.41 47.30 0.74 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 45.38 0.55 0.22 33.54 0.10 0.10 8.40 0.74 0.29 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 9.27 -9.85 -13.95 7.96 -17.36 -17.35 1.95 -8.60 -12.70 Distance 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 56.75 45.30 45.42 55.44 37.79 42.03 49.42 46.55 46.67 DAY LEQ 57.34 EVENING LEQ 55.70 NIGHT LEQ 52.53
CNEL 60.37 Day hour 89.00
DAY LEQ 57.34 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside light truck mix.

Existing Plus Project Traffic Noise
Vehicle Distribution (Light Truck Mix)
Daytime Evening Night
Noise Parameters
1 Karen Avenue
North of Pierson Boulevard :Segment
Apx-70 Item Number: 1. Page 1033 of 2517
:Id ADT 4600
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 266.40 5.52 9.20 197.78 0.92 1.53 49.04 7.67 12.78 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 16.55 -0.29 1.93 15.25 -8.07 -5.85 9.20 1.14 3.36
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.17 55.46 61.64 63.88 47.68 53.86 57.82 56.89 63.07 DAY LEQ 67.08 EVENING LEQ 64.38 NIGHT LEQ 64.94
CNEL 71.86 Day hour 90.00
DAY LEQ 67.08 Absorptive? no
Use hour? no
GRADE dB 1.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
2 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
North of Mission Lakes Boulevard
Daytime Evening Night
:Segment
Apx-71 Item Number: 1. Page 1034 of 2517
:Id ADT 4840
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 280.30 5.81 9.68 208.09 0.97 1.61 51.60 8.07 13.44 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 16.77 -0.07 2.15 15.47 -7.85 -5.63 9.42 1.36 3.58
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.39 55.68 61.86 64.10 47.90 54.08 58.04 57.11 63.29 DAY LEQ 67.30 EVENING LEQ 64.60 NIGHT LEQ 65.16
CNEL 72.08 Day hour 90.00
DAY LEQ 67.30 Absorptive? no
Use hour? no
GRADE dB 1.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
2 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
North of Mission Lakes Boulevard
Daytime Evening Night
:Segment
Apx-72 Item Number: 1. Page 1035 of 2517
:Id ADT 4800
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 277.99 5.76 9.60 206.37 0.96 1.60 51.18 8.00 13.33 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 16.73 -0.11 2.11 15.44 -7.89 -5.67 9.38 1.32 3.54
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.36 55.65 61.83 64.06 47.87 54.05 58.01 57.07 63.25 DAY LEQ 67.26 EVENING LEQ 64.57 NIGHT LEQ 65.13
CNEL 72.04 Day hour 91.00
DAY LEQ 67.26 Absorptive? no
Use hour? no
GRADE dB 2.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
3 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
South of Mission Lakes Boulevard
Daytime Evening Night
:Segment
Apx-73 Item Number: 1. Page 1036 of 2517
:Id ADT 5770
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 334.16 6.92 11.54 248.08 1.15 1.92 61.52 9.62 16.03 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 17.53 0.69 2.91 16.24 -7.09 -4.87 10.18 2.12 4.34
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 66.16 56.45 62.63 64.86 48.66 54.85 58.81 57.87 64.05 DAY LEQ 68.06 EVENING LEQ 65.37 NIGHT LEQ 65.93
CNEL 72.84 Day hour 91.00
DAY LEQ 68.06 Absorptive? no
Use hour? no
GRADE dB 2.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
3 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
South of Mission Lakes Boulevard
Daytime Evening Night
:Segment
Apx-74 Item Number: 1. Page 1037 of 2517
:Id ADT 5000
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 289.57 6.00 10.00 214.97 1.00 1.67 53.31 8.33 13.89 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 16.91 0.07 2.29 15.61 -7.71 -5.49 9.56 1.50 3.72
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.53 55.82 62.00 64.24 48.04 54.22 58.18 57.25 63.43 DAY LEQ 67.44 EVENING LEQ 64.75 NIGHT LEQ 65.31
CNEL 72.22 Day hour 92.00
DAY LEQ 67.44 Absorptive? no
Use hour? no
GRADE dB 3.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
4 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
North of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-75 Item Number: 1. Page 1038 of 2517
:Id ADT 7170
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 415.24 8.60 14.34 308.27 1.43 2.39 76.44 11.95 19.92 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 18.47 1.64 3.86 17.18 -6.14 -3.93 11.12 3.06 5.28
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 67.10 57.39 63.57 65.80 49.61 55.79 59.75 58.82 65.00 DAY LEQ 69.00 EVENING LEQ 66.31 NIGHT LEQ 66.87
CNEL 73.79 Day hour 92.00
DAY LEQ 69.00 Absorptive? no
Use hour? no
GRADE dB 3.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
4 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
North of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-76 Item Number: 1. Page 1039 of 2517
:Id ADT 5700
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 330.11 6.84 11.40 245.07 1.14 1.90 60.77 9.50 15.83 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 17.48 0.64 2.86 16.18 -7.14 -4.92 10.13 2.07 4.29
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.72 55.01 61.19 63.43 47.23 53.41 57.37 56.44 62.62 DAY LEQ 66.62 EVENING LEQ 63.93 NIGHT LEQ 64.49
CNEL 71.41 Day hour 93.00
DAY LEQ 66.62 Absorptive? no
Use hour? no
GRADE dB 4.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
5 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
South of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-77 Item Number: 1. Page 1040 of 2517
:Id ADT 6670
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 386.29 8.00 13.34 286.77 1.33 2.22 71.11 11.12 18.53 Speed in MPH 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 55.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 18.16 1.32 3.54 16.87 -6.46 -4.24 10.81 2.75 4.97
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.40 55.69 61.87 64.11 47.91 54.09 58.05 57.12 63.30 DAY LEQ 67.31 EVENING LEQ 64.61 NIGHT LEQ 65.17
CNEL 72.09 Day hour 93.00
DAY LEQ 67.31 Absorptive? no
Use hour? no
GRADE dB 4.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
5 Vehicle Distribution (Heavy Truck Mix)
Indian Canyon Drive
South of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-78 Item Number: 1. Page 1041 of 2517
:Id ADT 4800
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 277.99 5.76 9.60 206.37 0.96 1.60 51.18 8.00 13.33 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 17.14 0.31 2.53 15.85 -7.47 -5.25 9.80 1.74 3.95
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.16 55.00 61.45 62.87 47.22 53.66 56.81 56.43 62.87 DAY LEQ 66.35 EVENING LEQ 63.47 NIGHT LEQ 64.56
CNEL 71.38 Day hour 94.00
DAY LEQ 66.35 Absorptive? no
Use hour? no
GRADE dB 5.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
6 Vehicle Distribution (Heavy Truck Mix)
Little Morongo Road
North of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-79 Item Number: 1. Page 1042 of 2517
:Id ADT 5280
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 305.79 6.34 10.56 227.01 1.06 1.76 56.29 8.80 14.67 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 17.56 0.72 2.94 16.26 -7.06 -4.84 10.21 2.15 4.37
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.58 55.42 61.86 63.28 47.63 54.08 57.23 56.84 63.29 DAY LEQ 66.77 EVENING LEQ 63.88 NIGHT LEQ 64.97
CNEL 71.80 Day hour 94.00
DAY LEQ 66.77 Absorptive? no
Use hour? no
GRADE dB 5.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
6 Vehicle Distribution (Heavy Truck Mix)
Little Morongo Road
North of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-80 Item Number: 1. Page 1043 of 2517
:Id ADT 4600
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 16.55 -0.29 1.93 15.25 -8.07 -5.85 9.20 1.14 3.36
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.17 55.46 61.64 63.88 47.68 53.86 57.82 56.89 63.07 DAY LEQ 67.08 EVENING LEQ 64.38 NIGHT LEQ 64.94
CNEL 71.86 Day hour 95.00
DAY LEQ 67.08 Absorptive? no
Use hour? no
GRADE dB 6.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
7 Vehicle Distribution (Heavy Truck Mix)
Little Morongo Road
South of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-81 Item Number: 1. Page 1044 of 2517
:Id ADT 4840
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 55
Automobiles 75.54 14.02 10.43 92.00 Distance 40
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

NOISE CALCULATIONS
Reference levels 72.73 79.85 83.81 72.73 79.85 83.81 72.73 79.85 83.81

ADJUSTMENTS
Flow 16.77 -0.07 2.15 15.47 -7.85 -5.63 9.42 1.36 3.58
Distance 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 65.39 55.68 61.86 64.10 47.90 54.08 58.04 57.11 63.29 DAY LEQ 67.30 EVENING LEQ 64.60 NIGHT LEQ 65.16
CNEL 72.08 Day hour 95.00
DAY LEQ 67.30 Absorptive? no
Use hour? no
GRADE dB 6.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
7 Vehicle Distribution (Heavy Truck Mix)
Little Morongo Road
South of Pierson Boulevard
Daytime Evening Night
:Segment
Apx-82 Item Number: 1. Page 1045 of 2517
:Id ADT 3900
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.56 13.96 10.49 97.40 Distance 36
Medium Trucks 48.91 2.17 48.91 1.84 Left Angle -90
Heavy Trucks 47.30 5.41 47.30 0.74 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 239.19 2.92 1.14 176.76 0.52 0.52 44.27 3.90 1.52 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 16.49 -2.63 -6.74 15.18 -10.14 -10.13 9.17 -1.39 -5.49 Distance 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 63.97 52.52 52.64 62.65 45.01 49.25 56.64 53.77 53.89 DAY LEQ 64.56 EVENING LEQ 62.92 NIGHT LEQ 59.75
CNEL 67.59 Day hour 96.00
DAY LEQ 64.56 Absorptive? no
Use hour? no
GRADE dB 7.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside light truck mix.

Noise Parameters
Existing Traffic Noise
8 Vehicle Distribution (Light Truck Mix)
Mission Lakes Boulevard
East of Indian Canyon Drive
Daytime Evening Night
:Segment
Apx-83 Item Number: 1. Page 1046 of 2517
:Id ADT 4630
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.56 13.96 10.49 97.40 Distance 36
Medium Trucks 48.91 2.17 48.91 1.84 Left Angle -90
Heavy Trucks 47.30 5.41 47.30 0.74 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 283.96 3.47 1.35 209.85 0.62 0.62 52.56 4.63 1.80 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 17.24 -1.89 -5.99 15.92 -9.40 -9.39 9.91 -0.64 -4.74 Distance 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.36
Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.71 53.26 53.39 63.40 45.75 49.99 57.39 54.51 54.64 DAY LEQ 65.30 EVENING LEQ 63.66 NIGHT LEQ 60.50
CNEL 68.34 Day hour 96.00
DAY LEQ 65.30 Absorptive? no
Use hour? no
GRADE dB 7.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside light truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
8 Vehicle Distribution (Light Truck Mix)
Mission Lakes Boulevard
East of Indian Canyon Drive
Daytime Evening Night
:Segment
Apx-84 Item Number: 1. Page 1047 of 2517
:Id ADT 3500
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 202.70 4.20 7.00 150.48 0.70 1.17 37.32 5.83 9.72 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 15.77 -1.06 1.16 14.48 -8.84 -6.63 8.42 0.36 2.58
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 61.41 52.25 58.69 60.12 44.47 50.91 54.06 53.67 60.12 DAY LEQ 63.60 EVENING LEQ 60.71 NIGHT LEQ 61.80
CNEL 68.63 Day hour 97.00
DAY LEQ 63.60 Absorptive? no
Use hour? no
GRADE dB 8.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
9 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
West of Karen Avenue
Daytime Evening Night
:Segment
Apx-85 Item Number: 1. Page 1048 of 2517
:Id ADT 4470
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 258.88 5.36 8.94 192.19 0.89 1.49 47.66 7.45 12.42 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 16.84 0.00 2.22 15.54 -7.78 -5.56 9.49 1.43 3.64
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 62.47 53.31 59.75 61.18 45.53 51.97 55.12 54.74 61.18 DAY LEQ 64.66 EVENING LEQ 61.77 NIGHT LEQ 62.87
F CNEL 69.69 Day hour 97.00
DAY LEQ 64.66 Absorptive? no
Use hour? no
GRADE dB 8.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
9 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
West of Karen Avenue
Daytime Evening Night
:Segment
Apx-86 Item Number: 1. Page 1049 of 2517
:Id ADT 4000
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 231.66 4.80 8.00 171.98 0.80 1.33 42.65 6.67 11.11 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 16.35 -0.48 1.74 15.06 -8.26 -6.05 9.00 0.94 3.16
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 61.99 52.83 59.27 60.70 45.05 51.49 54.64 54.25 60.70 DAY LEQ 64.18 EVENING LEQ 61.29 NIGHT LEQ 62.38
CNEL 69.21 Day hour 98.00
DAY LEQ 64.18 Absorptive? no
Use hour? no
GRADE dB 9.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
10 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
East of Karen Avenue
Daytime Evening Night
:Segment
Apx-87 Item Number: 1. Page 1050 of 2517
:Id ADT 5210
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 301.73 6.25 10.42 224.00 1.04 1.74 55.55 8.68 14.47 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 17.50 0.66 2.88 16.21 -7.12 -4.90 10.15 2.09 4.31
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 63.14 53.97 60.42 61.84 46.19 52.64 55.79 55.40 61.85 DAY LEQ 65.33 EVENING LEQ 62.44 NIGHT LEQ 63.53
CNEL 70.36 Day hour 98.00
DAY LEQ 65.33 Absorptive? no
Use hour? no
GRADE dB 9.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
10 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
East of Karen Avenue
Daytime Evening Night
:Segment
Apx-88 Item Number: 1. Page 1051 of 2517
:Id ADT 4000
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 16.35 -0.48 1.74 15.06 -8.26 -6.05 9.00 0.94 3.16
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 61.99 52.83 59.27 60.70 45.05 51.49 54.64 54.25 60.70 DAY LEQ 64.18 EVENING LEQ 61.29 NIGHT LEQ 62.38
CNEL 69.21 Day hour 99.00
DAY LEQ 64.18 Absorptive? no
Use hour? no
GRADE dB 10.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Traffic Noise
11 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
West of Indian Canyon Drive
Daytime Evening Night
:Segment
Apx-89 Item Number: 1. Page 1052 of 2517
:Id ADT 4480
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 259.45 5.38 8.96 192.62 0.90 1.49 47.76 7.47 12.44 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 16.85 0.01 2.23 15.55 -7.77 -5.55 9.50 1.44 3.65
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 62.48 53.32 59.76 61.19 45.54 51.98 55.13 54.75 61.19 DAY LEQ 64.67 EVENING LEQ 61.78 NIGHT LEQ 62.88
CNEL 69.70 Day hour 99.00
DAY LEQ 64.67 Absorptive? no
Use hour? no
GRADE dB 10.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Noise Parameters
Existing Plus Project Traffic Noise
11 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
West of Indian Canyon Drive
Daytime Evening Night
:Segment
Apx-90 Item Number: 1. Page 1053 of 2517
:Id ADT 4800
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 17.14 0.31 2.53 15.85 -7.47 -5.25 9.80 1.74 3.95
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 62.78 53.62 60.06 61.49 45.84 52.28 55.43 55.05 61.49 DAY LEQ 64.97 EVENING LEQ 62.08 NIGHT LEQ 63.18
CNEL 70.00 Day hour 0.00
DAY LEQ 64.97 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Daytime Evening Night
Noise Parameters
Existing Traffic Noise
12 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
East of Indian Canyon Drive :Segment
Apx-91 Item Number: 1. Page 1054 of 2517
:Id ADT 6490
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 375.86 7.79 12.98 279.04 1.30 2.16 69.19 10.82 18.03 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 18.45 1.62 3.84 17.16 -6.16 -3.94 11.11 3.05 5.26
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.09 54.93 61.37 62.80 47.15 53.59 56.74 56.36 62.80 DAY LEQ 66.28 EVENING LEQ 63.39 NIGHT LEQ 64.49
CNEL 71.31 Day hour 0.00
DAY LEQ 66.28 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Daytime Evening Night
Noise Parameters
Existing Plus Project Traffic Noise
12 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
East of Indian Canyon Drive :Segment
Apx-92 Item Number: 1. Page 1055 of 2517
:Id ADT 5800
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 335.90 6.96 11.60 249.37 1.16 1.93 61.84 9.67 16.11 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 17.97 1.13 3.35 16.67 -6.65 -4.43 10.62 2.56 4.78
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 63.60 54.44 60.89 62.31 46.66 53.10 56.25 55.87 62.31 DAY LEQ 65.79 EVENING LEQ 62.91 NIGHT LEQ 64.00
CNEL 70.82 Day hour 0.00
DAY LEQ 65.79 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Daytime Evening Night
Noise Parameters
Existing Traffic Noise
13 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
West of Little Morongo Road :Segment
Apx-93 Item Number: 1. Page 1056 of 2517
:Id ADT 7490
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 433.78 8.99 14.98 322.03 1.50 2.50 79.86 12.48 20.81 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 19.08 2.24 4.46 17.78 -5.54 -3.32 11.73 3.67 5.89
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.71 55.55 62.00 63.42 47.77 54.21 57.36 56.98 63.42 DAY LEQ 66.90 EVENING LEQ 64.02 NIGHT LEQ 65.11
CNEL 71.93 Day hour 0.00
DAY LEQ 66.90 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Daytime Evening Night
Noise Parameters
Existing Plus Project Traffic Noise
13 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
West of Little Morongo Road :Segment
Apx-94 Item Number: 1. Page 1057 of 2517
:Id ADT 7000
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 405.40 8.40 14.00 300.96 1.40 2.33 74.63 11.67 19.44 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 18.78 1.95 4.17 17.49 -5.83 -3.62 11.43 3.37 5.59
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.42 55.26 61.70 63.13 47.48 53.92 57.07 56.68 63.13 DAY LEQ 66.61 EVENING LEQ 63.72 NIGHT LEQ 64.82
CNEL 71.64 Day hour 0.00
DAY LEQ 66.61 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Daytime Evening Night
Noise Parameters
Existing Traffic Noise
14 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
East of Little Morongo Road :Segment
Apx-95 Item Number: 1. Page 1058 of 2517
:Id ADT 7970
:Road
Motor-Vehicle
Type
Daytime %
(7 AM - 7 PM)
Evening %
(7 PM - 10 PM)
Night %
(10 PM - 7 AM)
Total % of
Traffic Flow Speed 50
Automobiles 75.54 14.02 10.43 92.00 Distance 55
Medium Trucks 48.00 2.00 50.00 3.00 Left Angle -90
Heavy Trucks 48.00 2.00 50.00 5.00 Right Angle 90
Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks Autos Medium Trucks Heavy Trucks

INPUT PARAMETERS
Vehicles per hour 461.57 9.56 15.94 342.67 1.59 2.66 84.97 13.28 22.14 Speed in MPH 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 Left angle -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 -90.00 Right angle 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00

NOISE CALCULATIONS
Reference levels 71.12 78.79 83.02 71.12 78.79 83.02 71.12 78.79 83.02

ADJUSTMENTS
Flow 19.35 2.51 4.73 18.05 -5.27 -3.05 12.00 3.94 6.16
Distance -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 -0.48 Finite Roadway 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Barrier 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Constant -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 -25.00 LEQ 64.98 55.82 62.27 63.69 48.04 54.48 57.63 57.25 63.69 DAY LEQ 67.17 EVENING LEQ 64.29 NIGHT LEQ 65.38
CNEL 72.20 Day hour 0.00
DAY LEQ 67.17 Absorptive? no
Use hour? no
GRADE dB 0.00
Notes:
(1) FHWA Traffic Noise Prediction Model FHWA-RD-77-108
(2) Vehicle percentages based on County of Riverside heavy truck mix.

Daytime Evening Night
Noise Parameters
Existing Plus Project Traffic Noise
14 Vehicle Distribution (Heavy Truck Mix)
Pierson Boulevard
East of Little Morongo Road :Segment
Apx-96 Item Number: 1. Page 1059 of 2517

APPENDIX G

VIBRATION WORKSHEETS
Apx-97
Item Number: 1.

Page 1060 of 2517 ends

Desert Hot Springs City CouncilDecember 12, 2024

Desert Hot Springs City Council
December 12, 2024