Tuesday, October 15, 2024 Reg CC MTG, Page *194
ENCLOSURE 3
QUICK STRUCTURAL RATING REPORT PRIORITY LIST
CITY OF LOMITA (Y0TV1112C)
ITEM NO.
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
START MH
1652-0322
1651-0011
1651-0095
1651-0158
1652-0422
1651-0143
1651-0144
1651-0066
1651-0036
1652-0413
1652-0510
1652-0319
1652-0141
1651-0065
1651-0008
1651-0066A
1652-0104
1652-0365
1651-0156
1652-0343
1651-0154
1651-0092
1651-0031
1652-0356
1652-0252
1652-0157
1651-0153
1651-0093
1652-0231
1651-0007
END MH
1652-0323
1651-0012
1651-0027
1651-0157
1652-0423
1651-0142
1651-0143
1651-0066A
1651-0035
1652-0414
1652-0511
1652-0322
1651-0142
1651-0066
1651-0011
1651-0067
1652-0105
1652-0369
1651-0294
1652-0344
1651-0153
1651-0093
1651-0030
1652-0357
1652-0253
1652-0170
1651-0146
1651-0094
1652-0232
1651-0008
STREET
253RD PL
PENNSYLVANIA AV
248TH ST
241ST ST
ANDREO AV
TURRELL ST
TURRELL ST
MORENTON ST
249TH ST
ANDREO AV
VIANA AV
ANDREO AV
R/W
OBSERVATION PROPOSED CORRECTIVE ACTION
Lining
Lining
No action needed*
Lining
Lining
Lining
Lining
Lining
Lining
Lining
No action needed*
Lining
No action needed*
No action needed*
No action needed*
Point repair
Fractures
Fractures, Hole
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures, Broken
Fractures
Fractures
Fractures
Tap intruding
Fractures
Fractures
Broken
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures, Broken
Fractures
MORENTON ST
247TH ST
MORENTON ST
WESTERN AV
OAK ST
Lining
Lining
241ST ST No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
EASEMENT
CALLISON ST
248TH ST
FALENA AV
GUYSON ST
ESHELMAN AV
CAYUGA AV
CALLISON ST
248TH ST
WALNUT ST
247TH ST
Tuesday, October 15, 2024 Reg CC MTG, Page *195
ENCLOSURE 3
QUICK STRUCTURAL RATING REPORT PRIORITY LIST
CITY OF LOMITA (Y0TV1112C)
ITEM NO.
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 START MH
1652-0511
1652-0517
1652-0519
1652-0427
1652-0348
1652-0349
1652-0240
1652-0158
1651-0196
1652-0541
1651-0035
1652-0445
1651-0078
1652-0340
1652-0588
1652-0428
1652-0451
1652-0382
1652-0401
1652-0346
1652-0163
1652-0184
1652-0600
1652-0100
1652-0061
1651-0111
1651-0145
1651-0058
1651-0069
END MH
1652-0512
1652-0516
1652-0520
1652-0428
1652-0347
1652-0350
1652-TRNK
1652-0159
1651-0195
1652-0542
1651-0034
1652-0446
1651-0019
1652-0339
1652-0586
1652-0429
1652-0450
1652-0383
1652-0404
1652-0347
1652-0164
1652-0183
1652-0110
1652-0600
1652-0062
1651-0112
1651-0144
1651-0059
1651-0068
STREET
VIANA AV
CYPRESS ST
CYPRESS ST
WOODWARD AV
ESHELMAN AV
GARNER ST
EBONY LN
259TH PL.
OBSERVATION
Fractures
Cracks
Fractures
Fractures
Fractures
Fractures
Fractures
Cracks
PROPOSED CORRECTIVE ACTION
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
Lining
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
No action needed*
Point repair
LOMITA BV
PACIFIC COAST HWY
249TH ST
Cracks
Fractures
Fractures
Fractures
Fractures
Hole
ALLIENE AV
NARBONNE AV
ESHELMAN AV
250TH ST
WOODWARD AV
255TH ST
PACIFIC COAST HWY
253RD PL
W. 259TH PL
REED AV
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
Fractures
257TH ST
WESTERN AV
WESTERN AV
VIA DESMONDE
247TH PL
WALNUT ST
EASEMENT
No action needed*
No action needed*
PENNSYLVANIA AV No action needed*
Tuesday, October 15, 2024 Reg CC MTG, Page *196
237TH PL ENCLOSURE 3
CCTV PROJECT
170 Y0TV1112C
169
H ST W 239T
266
265
!( 316 171168
!(!(
!(
285 !(
CITY OF
LOMITA
!(
283284 287
!( !(
288 315289 17216715!(2 151
150
222
221
223226 !( !( !( !(!( !(!( !( !(
!( !( !( 255 224225 149 290
291
!(
286 157 !( 156 !( !( !( 264 !( 294 W 241ST ST 228 230
!( !( !(
231 232
!(
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254 !(
166
173
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245
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QUICK
STRUCTURAL
RATING
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241
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261 269
251
!( 186 185 184 177 145
(QSR) 68
317
238 !(
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!( !( 162 318 !(
!(
242 260
250!(249
259
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!(
SMD Sanitary Sewers
QSR
!( !( Los Angeles !( !( !( !( 36 35 34 33 76 !(!(
!(!(78
83 82
88 !( 94 95 !(
!( 29
!(
!( !( !( 213!(
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!(
590 !( !(
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!( 286 578 !( !( !(!(!( 4: SIGNIFICANT
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213 5: MOST SIGNIFICANT
!( 307 L
!( !( !( !(
467 377
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289591
436 429 410 ( 241
!(
315 SMD Manholes
!(
!( !( !( #*
!(
!( 408 !( 290 212 409 !( 24224!(3 218 !( !( !(
576 !( !(!(
!(!(
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310
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420 291 292 293 !(
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617
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565 416 222 469 !( !( !( 434 !( 616
!(
!( 415!( !(
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!(
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!(
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442 321 !(
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!
!(
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!(
228 474 !(
!( 400
!(
320 32!(4 299
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558 !( !( !( !( !(
!(198 !(
!( !(
196 !( Í SMD Pump Stations
!(
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564
479
!( !( 194 !( 473 402 193 Q3 SMD Treatment Plants 432 !( !(
227 226225
!( !(
594
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554 555 556 480 481451
!( !(
450!( !(
446 395 192 191
!(!( !(
397 398 399 326
387
327 328
!(
!( !( ! !( !( (!477!( ! !( !( !( !( !( !( ! !( !( Trunk Sewerlines 325 ( !( 86 234
235
!(
!(186
232
233
!(!(
190 !(
!(
!( !( 482 394 Non SMD Sanitary Sewers
Non SMD Maintained MH
SMD Operations Maps
CCTV Project Area
553 !(
!( !(
!( 396 449 445
444
187 329 189 188
!( !(
483 !( !( !( !( !( !( !(
389
!(
!( !( !( 391 392 393
!(
548549 550 551 552 491 484 !( !( !( !( 185 !( !( !( !( !( !( !( !( !( 236 388 ! 448 390 229 230 231!
!( (
!(
!( !( 330 547 485 !(
!(
!( !( !(
!(
!( !( 180 181 182 184 183 545546
!(544
486
(487
!( This map is intended only for internal operations of the Los Angeles County Sewer Maintenance Districts.
Los Angles County expressly disclaims any liability
for any inaccuracies which may be present in this
map. Data contained in this map is produced in
whole or part from the Thomas Bros. Maps® digital
database. This map is copyrighted, and reproduced
with permission granted, by Thomas Bros. Maps®.
All rights reserved.
!( ! 386 385 384 !( !( !( !(
!( ! 178
!(
!( !( !(
!( 447 !(
177 179
!(
!( 542 488 489 454
512
453 380 381 !( !(
!(
535 383 332 334
339
!(337 !( !(175
!(
335 176
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173
!(
174
170
536
!( !(
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5!(39 5!(38 5#*37
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!!(463 !(462 !(456 !( 379
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162 611 165 534
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157 156 461 !( !(163!( !( 282
164 !(
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!( !( !( September 2018 !( Tuesday, October 15, 2024 Reg CC MTG, Page *197 450!(432 !( 227 225
226
192 191 ENCLOSURE 3
CCTV PROJECT
Y0TV1112C
594 554 555 556 479 480 481
!( !(
!( 451 446 395
389
402397
396
398 399 325 326 327 328 !( !( !(
!(#* ! ( !( !( 255TH ST
!( 477 ( !( !( !(!( !( !( !( !( !(
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189
!( 482 394 553 !( !(
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449 445 187
444
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551 552 491 484 !( !(
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185 !( !( !
!( 236
230 231!(
!( 180
388 387 !(
448
447
390 330!(229
CITY OF
LOMITA
!(
!(
!(
547 485
FORRESTER DR
!( !( 181
167
182
168
184 183 545546
!(544
486
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!( !( 386 385 384 !( !( !( !( !(
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QUICK
STRUCTURAL
RATING
534
!(531530
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506 514
596
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!( !( !( 371 340
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152
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158
347
!(
159 160 145
!(!(
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!( !( 516521
!(!(
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493 !(494
492
520517 369368
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497
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599
!( !( !( 276 !( !( !( !( !( !( W 261ST ST !( 111
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133 134
129
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119 123 128
606605
!(
273
268
267
254 !(
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!(
!( !( !( !( !( 603!(602 Los Angeles Legend !(
!(
610
127
126 609
607 !(
!(
272 271 253 118 122 125!( !( !(
99 SMD Sanitary Sewers
QSR
!( 263RD ST 107 !( !( !( !(
!(
!(
!( !( ! !( !(
608 !(
!(
105 106 !(
270 !(
!(
264 252 97
9!(6
98 102 1: MINOR
117 121
116
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!( !( !(
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!(
265 266 263 !(
2: MINOR TO MODERATE
3: MODERATE
!( !( !( !(
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262 251 95
94 260256
!(
257 93
!( !(103
!(261 !( !( !( !(
101 259!( !( !(
4: SIGNIFICANT 255 !( !( !(
250 !( !( !( !( !( !( 5: MOST SIGNIFICANT !( 91 51 52 53 54 55 56 !(
64 65 SMD Manholes !(
!( !(
!(
!(
!( !( !( !( !( !( !(
66 !(
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57 67 50 58 !( Manhole Type 68 69 !(
70 !(
!( 59 90
!( !(
!( !( !( !( !(
!( Standard !(
49 60 !(
!( !( #* DROP
!( 71 72 !( !( 89
!( !(
!(
!( Shallow 61 73 !( !( !(
48 XW
46 !(
!(
Trap 47 !(
!( !( 62
!(
!( 75 74 !? Siphon Rolling Hills Estates !( !(
87 !(
SMD Pump Stations 63 76 !( Í
!( !(
!( !(
!(
!( !(
!(
37 Q3 SMD Treatment Plants
45 Trunk Sewerlines !(
283
!( Non SMD Sanitary Sewers
Non SMD Maintained MH
SMD Operations Maps
CCTV Project Area
286
!( 28!(7 !( !(
!( !(
281
!(!(
288
!(
!( !(
!(
289
!(
!( !( !( !(
272273 275 S-1599 S-1653 !(
!
!(
!( This map is intended only for internal operations of the Los Angeles County Sewer Maintenance Districts.
Los Angles County expressly disclaims any liability
for any inaccuracies which may be present in this
map. Data contained in this map is produced in
whole or part from the Thomas Bros. Maps® digital
database. This map is copyrighted, and reproduced
with permission granted, by Thomas Bros. Maps®.
All rights reserved.
265 270 !( 2 6(8276
!(
!( 269 PENINSULA VERDE DR
!(
!( !( !(
!( 264 266 267
!( !( !(
DR N Rancho Palos Verdes ES RD VE
PALOS !(
!( !(
Tuesday, October 15, 2024 Reg CC MTG, Page *198 September 2018
APPENDIX B
CCTV REVIEW AND RECOMMENDATIONS
Tuesday, October 15, 2024 Reg CC MTG, Page *199
Legend
POINT_REPAIR
SEGMENT LINER
ROOTS
TOPHAT
Pacific Coast Hwy.
Sources: Esri, HERE, Garmin, USGS, Intermap,
INCREMENT P, NRCan, Esri Japan, METI, Esri China
(Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c)
OpenStreetMap contributors, and the GIS User
Community
Tuesday, October 15, 2024 Reg CC MTG, Page *200
CCTV Length
(ft.)
Active High Water
Segment ID Direction Laterals Level Recommendation Notes Other Comments Missed FC at 97.2' D/S;
FM @175.8' D/S;
defective lateral JOM @ 261.6' D/S;
CIPP line pipe due to fractures, missing defective lateral FM @ 265.0' D/S; 0174/1652-0184/1652 D/S 342.2 5 (verify) 45% pipe wall, and joint offsets. missed FM @ 267.6' D/S; missed FM @ 307.5' D/S;
FM @ 310.9' D/S;
wall missing at 105.8' & 112.7' D/S
RFJ @ 1.9', 7.0', 22.0', 37.5', 43.8', 52.5', 92.0', 97.0', 108.4', 112.0', 115.0', Remove root ball at 103.3' D/S; 121.0', 127.0', 133.0', 136.0', D/S; remove roots in lateral at 105.4' D/S; RMJ @ 94.5', 101.0' D/S; 0184/1652-0185/1652 D/S 180.0 3 25%
30%
install top hat at 105.4' D/S; Root ball @ 103.3' (remove), 105.4' (in lateral, remove) D/S; CIPP line pipe due to root intrusion Roots in barrel @ 92.4' (remove), 143.0', D/S throughout pipe. TFA @ 105.4', 146.5' D/S;
TBA @ 81.7' D/S;
Missed FC @ 36.6', 63.5', D/S;
Point repair from 66-72' D/S due to Missed JOM @ 63.5' D/S; defective laterals and sag in pipe (2 Apparent sag from 65-70' D/S; TFY's); segment liner from 34-38' D/S RFJ @ 18.5' D/S;
Lateral defective such that repair should be performed if lateral is active. 0185/1652-0189/1652
0189/1652-0190/1652
D/S
D/S
185.4
183.5
3 3
due to fracture. TFA @ 5.3', D/S;
TFD @ 65.9', 68.3' D/S (both have large offset, replace) Missed FL @ 134.1' D/S; Point repair from 38-44' D/S due to Missed CC @ 176.0' D/S; Lateral defective such that repair should be performed if lateral is active. 20% defective lateral (1 TFY); segment line pipe from 132-136' D/S due to fracture. TFA @ 107.4', 110.4', D/S; TFD @ 41.4' (broken, replace wye) D/S;
TFYs are defective, but at 99.0' the break is at top of lateral and is thus lower priority; lateral is still
functioning ay 148.5' so also not as high priority.
Removed PR. Point repairs in this reach may be difficult to construct due to access restrictions. TFY at 122.4'
does seem to be intentionally plugged but would need
to confirm.
Missed FC @ 24.5' D/S,;
Segment line from 22-26' D/S due to TFD @ 99.0' (broken, replace), 148.5' (JOL, top hat or replace? Review 0190/1652-0192/1652 D/S 181.9 2 40% fracture with Ben), D/S; TFC @ 122.4'
Missed FC @ 130.0' D/S;
Missed TFA @ 108.0' D/S;
TFA @ 95.9'D/S; Low Priority.
0192/1652-0193/1652 D/S 159.2 3 25% TBA @ 104.7' D/S; Segment line from 128-132' D/S due to fracture. TFC @ 42.2' D/S;
High water level from 143-155' D/S (approx. 60%).
0193/1652-0194/1652 N/A. Very short segment.
0194/1652-0201/1652
D/S
D/S
5.3 0
2 25%
30%
No repair recommended.
No repair recommended. Suggest High water level for portions of inspection. 170.6 monitoring deposits and roots in
defective laterals. TFD @ 95.4' (heavy deposits), 125.4' (roots) D/S Tuesday, October 15, 2024 Reg CC MTG, Page *201
CCTV Length
(ft.)
Active High Water
Segment ID Direction Laterals Level Recommendation Notes Root ball @ 125.0', 127.0', 137.0', 151.1', 160.5', 163.5', D/S'; RFJ @ 130.9', 133.5', D/S;
TFA @ 97.1', 102.6', 228.2' D/S;
TFA @ 11.1' D/S;
Other Comments
Remove root ball at 6 locations; CIPP
line pipe due to heavy root intrusion. 0201/1652-0202/1652 D/S 228.4 3 25% 0202/1652-0204/1652
0204/1652-0617/1652
D/S
D/S
22.4 97.7
1 1
15%
20%
No repair recommended.
No repair recommended. TFA @ 35.8' D/S;
TFC @ 53.2' D/S;
Missed CC @ 1.5', 60.8', 67.2', D/S;
TFA @ 101.9', 128.7' D/S;
TFC @ 255.0', 257.5' D/S
RFJ @ 5.8' D/S;
0208/1652-0211/1652 D/S 290.4 2 35% No repair recommended.
Root ball @ 14.3' (remove) D/S;
TFA @ 92.4', 174.6' D/S;
TBA @ 152.5' D/S;
0211/1652-0212/1652
0212/1652-0217/1652
D/S
D/S
228.2
239.7
3 2
35%
35%
Remove root ball at 14.3' D/S.
No repair recommended.
TFC @ 116.4' D/S;
TFA @ 14.5' D/S;
TFC @ 116.5' D/S;
0208/1652-0616/1652
0616/1652-0617/1652
D/S
D/S
168.6
37.5 6
1 30%
30%
No repair recommended.
No repair recommended.
TFA @ 14.5', 16.3', 43.9', 46.3, 91.5', 102.6', D/S;
TFA @ 21.6' D/S
Tuesday, October 15, 2024 Reg CC MTG, Page *202
APPENDIX C
US3 FLOW MONITORING REPORT
Tuesday, October 15, 2024 Reg CC MTG, Page *203
Site Report 11/28/2023
Confidential Proprietary Information
MH at ~2254 250th St
Lomita, CA 90717
MH # unknown
PSOMAS
2023.11 250th St MH
Access: System Type:
Install Date: 11/06/2023 MH in eastbound lane on 250th street north of address
Sanitary X Storm
Flow Meter
Meter Depth: 146.46"
Map
MH Coordinates: 33.798224, -118.321994
Slow to moderate open channel hydraulics.
Avg Velocity Avg Measured Level Multiplier
1.9 fps 2.9" 1.0
Gas
O2 H2S
0 CO LEL
20.9 0 0
Notes
No laterals; monitored the upstream line as it
provided the best hydraulics during inspection.
Traffic Safety
Used cones & signs in accord w/site-specific
CATTCH requirements.
Land Use
Residential Commercial Industrial Trunk
X
Manhole Depth 168"
Monitored Pipe Size 15"
Sewer Map Inner Pipe Size (In/Out) 15"/15"
Pipe Shape Round
Pipe Condition
Manhole Material
Silt
Good
Brick
None observed
Passed
0.4 2-D
21.54"
Velocity Profile Data
Velocity Profile Taken
Sensor Offset
Sensor Dist. to Crown
Sensor Direction
Flow Heading
6.54"
Upstream
East
Tuesday, October 15, 2024 Reg CC MTG, Page *204
Meter Site Document
2023.11 250th St MH
MH at ~2254 250th St
Lomita, CA 90717
Site Manhole Before Install
Installation Process Installed
Upstream Upstream Pipe Size
Tuesday, October 15, 2024 Reg CC MTG, Page *205
Temporary Flow Study
PSOMAS
2023.11 250th St MH
Meter Start Date
Meter Stop Date
From
To
11/6/2023
11/22/2023
Flow (mgd)
0.215
Velocity (fps)
1.865
Level (in)
Average
Maximum
Minimum
Pipe Size
2.948
2.390 4.070
1.030
0.388
1.800 0.056
15.000
Estimated Capacity (mgd)
Capacity Used
Not Calculated
Not Calculated
Sensor Type Hach - Flodar
Utility Systems, Science and Software
1300 Hill St
El Cajon, CA 92020
601 N. Parkcenter Dr, Suite 209
Santa Ana, CA 92705
Tuesday, October 15, 2024 Reg CC MTG, Page *206
Site Report 11/28/2023
Confidential Proprietary Information
MH at ~2120 248th St
Lomita, CA 90717
MH # unknown
PSOMAS
2023.11 248th St MH
Access: System Type:
Install Date: 11/06/2023 MH in the center of 248th street north of address
Sanitary X Storm
Flow Meter
Meter Depth: 128.07"
Map
MH Coordinates: 33.799690, -118.318081
Slow to moderate open channel hydraulics
Avg Velocity Avg Measured Level Multiplier
1.0 fps 2.9" 1.0
Gas
O2 H2S
0 CO LEL
20.9 0 0
Notes
No laterals; monitored the upstream line as it
provided the best hydraulics during inspection.
Traffic Safety
Used cones & signs in accord w/site-specific
CATTCH requirements.
Land Use
Residential Commercial Industrial Trunk
X
Manhole Depth 148"
Monitored Pipe Size 12"
Sewer Map Inner Pipe Size (In/Out) 12"/12"
Pipe Shape Round
Pipe Condition
Manhole Material
Silt
Good
Brick
None observed
Passed
0.4 2-D
19.93"
Velocity Profile Data
Velocity Profile Taken
Sensor Offset
Sensor Dist. to Crown
Sensor Direction
Flow Heading
7.93"
Upstream
East
Tuesday, October 15, 2024 Reg CC MTG, Page *207
Meter Site Document
2023.11 248th St MH
MH at ~2120 248th St
Lomita, CA 90717
Site Manhole Before Install
Installation Process Installed
Upstream Upstream Pipe Size
Tuesday, October 15, 2024 Reg CC MTG, Page *208
Temporary Flow Study
PSOMAS
2023.11 248th St MH
Meter Start Date
Meter Stop Date
From
To
11/6/2023
11/22/2023
Flow (mgd)
0.100
Velocity (fps)
1.004
Level (in)
Average
Maximum
Minimum
Pipe Size
2.878
1.340 3.860
0.460
0.174
1.580 0.019
12.000
Estimated Capacity (mgd)
Capacity Used
Not Calculated
Not Calculated
Sensor Type Hach - Flodar
Utility Systems, Science and Software
1300 Hill St
El Cajon, CA 92020
601 N. Parkcenter Dr, Suite 209
Santa Ana, CA 92705
Tuesday, October 15, 2024 Reg CC MTG, Page *209
Site Report 11/28/2023
Confidential Proprietary Information
MH at ~ 1760 252nd St
Lomita, CA 90717
MH # unknown
PSOMAS
2023.11 252nd St MH
Access: System Type:
Install Date: 11/06/2023 MH in center of road north of address Sanitary X Storm Flow Meter
Meter Depth: 100.37"
Map
MH Coordinates: 33.795795, -118.309550
Moderate open channel hydraulics with little
turbulence due to inflow from laterals
Avg Velocity Avg Measured Level Multiplier
3.6 fps 2.7" 1.0
Gas
O2 H2S
0 CO LEL
20.9 0 0
Notes
Pipes entering from the east, west and south;
monitored the downstream to get total flow.
Traffic Safety
Used cones & signs in accord w/site-specific
CATTCH requirements.
Land Use
Residential Commercial Industrial Trunk
X
Manhole Depth 118"
Monitored Pipe Size 10"
Sewer Map Inner Pipe Size (In/Out) 10"/10"
Pipe Shape Round
Pipe Condition
Manhole Material
Silt
Good
Brick
None observed
Passed
0.4 2-D
17.63"
Velocity Profile Data
Velocity Profile Taken
Sensor Offset
Sensor Dist. to Crown
Sensor Direction
Flow Heading
7.63"
Downstream
North
Tuesday, October 15, 2024 Reg CC MTG, Page *210
Meter Site Document
2023.11 252nd St MH
MH at ~ 1760 252nd St
Lomita, CA 90717
Site Manhole Before Install
Installation Process Installed
Downstream Downstream Pipe Size
Tuesday, October 15, 2024 Reg CC MTG, Page *211
Temporary Flow Study
PSOMAS
2023.11 252nd St MH
Meter Start Date
Meter Stop Date
From
To
11/6/2023
11/22/2023
Flow (mgd)
0.297
Velocity (fps)
3.612
Level (in)
Average
Maximum
Minimum
Pipe Size
2.752
4.520 3.690
2.110
0.533
1.800 0.100
10.000
Estimated Capacity (mgd)
Capacity Used
Not Calculated
Not Calculated
Sensor Type Hach - Flodar
Utility Systems, Science and Software
1300 Hill St
El Cajon, CA 92020
601 N. Parkcenter Dr, Suite 209
Santa Ana, CA 92705
Tuesday, October 15, 2024 Reg CC MTG, Page *212
Velocity (fps)
1.872
Level (in)
3.004
Flow (gpm)
153.717
269.749
42.911
Average
Maximum
Minimum
RainFall Inches
2.390 4.070
1.030 1.890 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *213
Velocity (fps)
1.852
Level (in)
2.938
Flow (gpm)
147.972
265.188
38.600
Average
Maximum
Minimum
RainFall Inches
2.390 4.070
1.030 1.800 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *214
Velocity (fps)
1.856
Level (in)
2.832
Flow (gpm)
138.990
225.417
53.843
Average
Maximum
Minimum
RainFall Inches
2.270 3.540
1.100 1.980 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *215
11/6/2023 thru 11/22/2023
11/28/2023 2:12:32 PM
Tuesday, October 15, 2024 Reg CC MTG, Page *216
Report Date: 11/28/2023
Customer: PSOMAS
Group: Lomita FM Project
Site: 2023.11 250th St MH
2023.11 250th St MH:
11/06/2023 thru 11/22/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *217
Velocity (fps)
1.027
Level (in)
2.878
Flow (gpm)
Average 71.313
Maximum
Minimum
RainFall Inches
1.340 3.860 121.129
0.560 1.580 15.753 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *218
Velocity (fps)
0.993
Level (in)
2.862
Flow (gpm)
Average 68.624
Maximum
Minimum
RainFall Inches
1.330 3.680 116.868
0.520 1.640 15.552 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *219
Velocity (fps)
0.970
Level (in)
2.854
Flow (gpm)
Average 66.927
Maximum
Minimum
RainFall Inches
1.270 3.650 113.711
0.460 1.610 12.848 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *220
11/6/2023 thru 11/22/2023
11/28/2023 2:35:57 PM
Tuesday, October 15, 2024 Reg CC MTG, Page *221
Report Date: 11/28/2023
Customer: PSOMAS
Group: Lomita FM Project
Site: 2023.11 248th St MH
2023.11 248th St MH:
11/06/2023 thru 11/22/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *222
Velocity (fps)
3.652
Level (in)
2.748
Flow (gpm)
207.298
339.376
84.073
Average
Maximum
Minimum
RainFall Inches
4.500 3.570
2.360 1.930 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *223
Velocity (fps)
3.598
Level (in)
2.755
Flow (gpm)
205.831
370.008
69.771
Average
Maximum
Minimum
RainFall Inches
4.520 3.690
2.110 1.910 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *224
Velocity (fps)
3.519
Level (in)
2.706
Flow (gpm)
197.391
337.344
69.163
Average
Maximum
Minimum
RainFall Inches
4.310 3.590
2.150 1.800 11/28/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *225
11/6/2023 thru 11/22/2023
11/28/2023 2:26:25 PM
Tuesday, October 15, 2024 Reg CC MTG, Page *226
Report Date: 11/28/2023
Customer: PSOMAS
Group: Lomita FM Project
Site: 2023.11 252nd St MH
2023.11 252nd St MH:
11/06/2023 thru 11/22/2023
Tuesday, October 15, 2024 Reg CC MTG, Page *227
APPENDIX D
MODLE CALIBRATION AND PEAKING
Tuesday, October 15, 2024 Reg CC MTG, Page *228
Flow Montiroing Basin #1 Average Flow Calibration
Row Labels AREA (SF)
678,108
UNITS FACTOR GPD
24,562
734
GPM
Commercial 38 17.1
Auto, Recreation EQPT, Construction EQPT, Sales & Service 31,968 0 30,441
67,239
30,437
10,228
4,772
1000
1500
1500
1500
1500
0 0.51
0.73 1.61
0.73 0.24
0.00 0.74
1.11 0.93
0.58 2.49
4.68 0.62
0.00 0.26
0.00 0.67
0.67 0.00
0.03 0.46
157.2
34.93 6.04
14.10 2.94
72.48 8.71
9.82 8.17
174
Banks Savings & Loan
Commercial
1 1,048
2,315
1,048
352
0 Hotel & Motels 19
Office Buildings 0
Parking Lots (Commercial Use Properties)
Professional Buildings
Restaurants, Cocktail Lounges
Service Stations
0 -
31,072
40,822
58,318
24,350
104,029
195,779
48,653
32,772
32,772
104,664
52,403
52,261
61,658
4,017
0 1500
1700
1000
1500
1500
1500
800
1,070
1,593
1,339
838
2 1
Shopping 0
Store Combination
Stores
11 4
3,582
6,742
Government 0 894
Industrial 0 -
Warehousing, Distribution, Storage
Institutional
0 500 376
2 -
Churches 0 800
800
962
Schools (Private) 2 960
Miscellaneous 1 -
Petroleum & Gas 0 500
500
450
100
100
100
90 46
Utility Commercial & Mutual: Pumping Plants State Assessed Pr Residential
57,640
7,705,397
2,429,369
323,636
230,093
0 1 662
1608
503
87 226,340
50,300
8,700
20,300
4,230
104,370
12,540
14,140
11,760
250,902
Five or more apartments
Four Units (Any Combination)
Mobile Home Parks
Senior Home
203
47 Single 2,683,448
538,092
503,804
996,955
8,582,599
497
114
101
56 210
110
140
210
Three Units (Any Combination)
Two Units
LDR
Grand Total 1649
Basin #1 FM AVG 149
Tuesday, October 15, 2024 Reg CC MTG, Page *229
Flow Montiroing Basin #2 Average Flow Calibration
Row Labels AREA (SF)
765,664
75,746
UNITS FACTOR GPD
37,969
1,739
1,310
1,871
-
GPM
Commercial 47 26.4
Auto, Recreation EQPT, Construction EQPT, Sales & Service 1 1000 1500
1500
0 1.21
0.91 1.30
0.00 3.29
0.37 6.29
0.90 3.73
Commercial 38,033 1
Office Buildings 54,333 13
Parking Lots (Commercial Use Properties) 27,635 1
Restaurants, Cocktail Lounges 121,490
23,027
2 1700
1000
1700
1500
1500
4,741
Service Stations 0 529
Shopping Centers (Neighborhood, community) 231,948
37,449
0 9,052
1,290
5,372
Store Combination 12
17 1
Stores 156,002
202,362
202,362
12,746
Government
Government Parcel 1 1500
800
6,968
234
4.84 0.16
Industrial 0
Lumber Yards 12,746 0
Institutional 161,126
106,281
54,845
6 Churches 5 800 1,952
1,889
1.36 Homes For Aged & Others 1 1500 1.31
Miscellaneous 51,946 1
Utility Commercial & Mutual: Pumping Plants State Assessed Pr 51,946 1 500 596 427
0.41 Recreational 12,394 2
Athletic & Amusement Facilities
Residential
12,394 2 1500 0.30
182.8
37.64 1.88
14,411,720
1,373,461
73,324
1688
542
27 156 263,240
Five or more apartments
Four Units (Any Combination)
Mobile Home Parks
Multi-Family
100 54,200
100
100
2,700
75,360 41 4,100 2.85
6,681,605
1,861,563
241,229
626,966
3,478,212
15,617,957
66 160 10,560
210 71,190
7.33 Single 339
81 49.44
Three Units (Any Combination) 6.19
Two Units
110 8,910
182
410
1745
140 25,480
210 86,100
301,209
17.69 59.79
209
LDR
Grand Total
Basin #2 FM AVG 203
Tuesday, October 15, 2024 Reg CC MTG, Page *230
Flow Montiroing Basin #3 Average Flow Calibration
Land Use AREA (SF)
304,134
51,500
UNITS FACTOR
1000
GPD
15,363
GPM
Commercial 21 10.7
3 0
2 0
2 0
2 6
6 0
0 1
0 1
0 0
0 1
1 Auto, Recreation EQPT, Construction EQPT, Sales & Service 1,182 1,641
909
0.82 1.14
0.63 0.58
0.22 0.36
0.24 1.33
1.26 Commercial 47,663 1500
1500
1500
1700
1000
1000
1500
1500
Office Buildings 26,394
Professional Buildings
Restaurants, Cocktail Lounges
Service Stations
24,441 842
8,191 320
22,395 514
Srvc Shps:Radio, TV, Refrig, Pnt Shp
Store Combination
Stores
15,076 346
55,590 1,914
52,883 1,821
Government 193,128
193,128
35,048
13,713
Government Parcel
Industrial
800 3,547 2.46
Food Processing Plants
Lgt Manf.Sm. EQPT. Manuf Sm.Shps Instr.Manuf. Prnt Plnts Institutional
1500
1500
472
735
0.33 21,336 0.51
56,284
Churches 36,753 800
0 675
-
0.47 Open 19,531 -
Recreational 12,917
Clubs., Lodge Halls, Fraternal Organizations 12,917
Residential
1500
141
100
100
100
160
100
210
110
120
445
93,730
7,300
0.31 65.09
5.07 5.56
5.00 2.11
0.07 29.90
3.97 13.42
76 3,009,547
131,467
173,130
170,547
544,891
7,102
663
Five or more apartments 73
Four Units (Any Combination)
Mobile Home Parks
Multi-Family
80 8,000
72 7,200
19 3,040
Rooming Houses 1 100
Single 1,305,688
123,781
552,942
3,611,059
205
52 43,050
Three Units (Any Combination) 5,720
Two Units 161
686
19,320
Grand Total 109,093
Basin #3 FM AVG 69
Tuesday, October 15, 2024 Reg CC MTG, Page *231
PEAK FACTOR
HOUR
1 RES
0.30 0.30
0.20 0.30
0.40 0.50
0.70 0.90
1.60 1.80
1.60 1.30
1.20 1.20
1.10 1.00
1.10 1.20
1.50 1.70
1.60 1.10
0.80 0.60
1.00 CII
0.60 0.30
0.30 0.30
0.35 0.50
0.60 1.00
1.30 1.70
1.50 1.60
1.70 1.60
1.40 1.30
1.20 1.00
0.90 0.90
1.10 1.00
1.00 0.90
1.00 Model Peaking 2
3 2.00
1.80 1.60
1.40 1.20
1.00 0.80
0.60 0.40
0.20 0.00
4 5
6 7
8 9
10 11
12 13
14 15
16 17
18 19
20 21
22 23
24 AVG
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 HOUR
RES CII
Tuesday, October 15, 2024 Reg CC MTG, Page *232
450
400
350
300
250
200
150
100
50 FM Site 1 - 250th Street
0 11/7/2023 0:00 11/9/2023 0:00 11/11/2023 0:00 11/13/2023 0:00 Observed Flow
11/15/2023 0:00 11/17/2023 0:00 11/19/2023 0:00 11/21/2023 0:00 Modeled Flow - Calibration
FM SITE 1 SUMMARY
Day
7-Nov
Avg (gpm)
151.1
Max (gpm) Factor
1.63 1.57
1.53 1.66
1.72 1.56
1.58 1.63
1.93 1.47
1.46 1.57
1.51 1.46
1.40 1.81
1.79 1.64
246.7
230.8
215.4
255.2
248.5
230.0
197.4
212.9
265.2
259.9
256.1
233.7
225.4
199.3
191.4
265.2
265.2
233.7
8-Nov 147.4
140.8
153.5
144.2
147.4
124.7
130.6
137.1
176.7
175.4
149.1
149.2
136.8
136.4
146.7
148.2
142.6
9-Nov
10-Nov
11-Nov
12-Nov
13-Nov
14-Nov
15-Nov
16-Nov
17-Nov
18-Nov
19-Nov
20-Nov
21-Nov
Avg
Avg Week
Avg Weekend
Tuesday, October 15, 2024 Reg CC MTG, Page *233
450
400
350
300
250
200
150
100
50 FM Site 2 - 252nd Street
0 11/7/2023 0:00 11/9/2023 0:00 11/11/2023 0:00 11/13/2023 0:00 Observed Flow
11/15/2023 0:00 11/17/2023 0:00 11/19/2023 0:00 11/21/2023 0:00 Modeled Flow - Calibration
FM SITE 2 SUMMARY
Day
7-Nov
Avg (gpm)
207.0
Max (gpm)
305.1
Factor
1.47 1.49
1.53 1.63
1.59 1.69
1.48 1.64
1.55 1.45
1.54 1.57
1.62 1.59
1.61 1.81
1.67 1.77
8-Nov 214.4
191.8
200.2
214.0
218.4
206.2
203.6
206.5
202.7
195.0
205.5
208.3
199.5
197.1
204.7
202.9
209.6
318.8
293.3
326.0
339.4
370.0
305.0
334.5
321.1
293.0
301.1
322.2
337.3
316.4
316.4
370.0
339.4
370.0
9-Nov
10-Nov
11-Nov
12-Nov
13-Nov
14-Nov
15-Nov
16-Nov
17-Nov
18-Nov
19-Nov
20-Nov
21-Nov
Avg
Avg Week
Avg Weekend
Tuesday, October 15, 2024 Reg CC MTG, Page *234
200
180
160
140
120
100
80 FM Site 3 - 248th Street
60 40
20 0
11/7/2023 0:00 11/9/2023 0:00 11/11/2023 0:00 11/13/2023 0:00 Observed Flow
11/15/2023 0:00
Modeled Flow - Calibration
11/17/2023 0:00 11/19/2023 0:00 11/21/2023 0:00
FM SITE 3 SUMMARY
Day
7-Jan
Avg (gpm)
76.1 Max (gpm)
118.8
Factor
1.56 1.54
1.54 1.69
1.69 1.69
1.46 1.53
1.61 1.60
1.51 1.57
1.68 1.54
1.62 1.75
1.75 1.71
8-Jan 68.5
68.7 71.6
65.4 69.1
67.9 68.5
69.2 69.8
68.4 69.0
67.6 70.1
67.2 69.1
69.4 68.4
105.4
105.7
121.1
110.7
116.9
98.9 9-Jan
10-Jan
11-Jan
12-Jan
13-Jan
14-Jan
15-Jan
16-Jan
17-Jan
18-Jan
19-Jan
20-Jan
21-Jan
Avg
104.8
111.0
111.5
103.1
108.5
113.7
107.8
108.8
121.1
121.1
116.9
Avg Week
Avg Weekend
Tuesday, October 15, 2024 Reg CC MTG, Page *235
APPENDIX E
MODLE OUTPUT DATA
Tuesday, October 15, 2024 Reg CC MTG, Page *236
EXISTING SCENARIO MODEL OUTPUT
Existing
Flow
Analysis Analysis Analysis Design Design Design Appt.
Units
Limit
Street Diam. Length
(in) (ft)
d/D Flow Excess
(gpm)
d/D Flow Excess
(gpm)
d/D SFR DUs
Name From MH To MH Slope (gpm) Ratio (gpm) Ratio (gpm) Ratio Limit 1652-0552 1652-0553
1652-0593 1652-0544
1652-0544 1652-0546
1652-0546 1652-0552
1652-0553 1652-0556
1652-0556 1652-0558
1652-0558 1652-0557
1652-0557 1652-0565
1652-0565 1652-0567
1652-0567 1652-0575
1652-0575 1652-0576
1652-0576 1652-0620
1652-0620 1652-0582
1652-0582 1652-0583
1652-0583 1652-0584
1652-0584 1652-0628
1652-0628 1652-0629
1652-0629 1652-0630
1652-0630 1652-0631
1652-0631 1652-0632
1652-0632 1652-0633
1652-0633 1652-0634
8 8
8 8
8 8
8 264.3 0.0800
188.5 0.0230
68.8 0.0010
245.0 0.0200
263.0 0.0150
285.8 0.0130
239.0 0.0160
269.0 0.0120
175.3 0.0180
87.5 0.0010
262.8 0.0130
51.5 0.0020
209.3 0.0170
268.6 0.0100
244.9 0.0110
275.4 0.0060
275.0 0.0060
275.0 0.0060
203.3 0.0040
209.5 0.0040
193.0 0.0030
54.5 0.0030
139.3 0.0060
293.8 0.0120
202.5 0.0150
116.5 0.0140
198.3 0.0230
221.3 0.0210
261.5 0.0200
47.5 0.0020
204.1 0.0260
323.1 0.0200
109.3
90.7 0.19 1,055.4 946.066 0.67 668.5 559.2 0.5 3,604
0.5 1,792
7,569
3,764
410
0.24 0.50
0.26 0.30
0.32 0.31
0.26 0.24
0.50 0.27
0.45 0.26
0.31 0.30
561.1 470.445
141.9 51.207
525.5 430.64
450.1 340.768
431.8 310.417
475.2 353.823
739.1 598.739
914.2 773.922
228.0 83.834
770.6 616.78
297.2 143.36
868.5 709.98
659.8 485.919
699.0 525.13
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.75 0.75
0.75 355.5
89.9 264.8
90.7 -0.8 0.5 195
94.9 332.9
285.1
273.5
301.0
468.2
579.1
144.4
488.2
188.3
550.2
418.0
442.8
739.9
740.5
740.5
238.0
175.8
152.1
179.6
327.8
438.8
0.3 0.5 1,641
0.5 1,298
0.5 1,183
0.5 1,348
0.5 2,281
0.5 2,948
3,445
2,726
2,483
2,831
4,790
6,191
671
109.3
121.4
121.4
140.3
140.3
144.2
153.8
153.8
158.5
173.9
173.9
182.3
190.2
190.2
308.9
309.1
330.2
330.2
332.7
59.1 10
10 10
10 10
10 10
10 12
12 12
15 15
12 15
15 8
0.5 0.5 2,350
0.5 546
319
334.3
34.4 4,934
1,147
5,680
3,887
4,201
6,575
6,518
6,518
9,200
9,166
3,057
7,317
11,094
2,743
3,128
2,930
3,972
3,696
3,528
709
391.6
244.1
268.9
557.6
550.2
550.3
766.0
762.8
194.7
586.9
934.1
195.5
225.3
207.5
288.3
266.5
249.3
26.1 0.5 2,705
0.5 1,851
0.5 2,000
0.6 3,131
0.6 3,104
0.6 3,104
0.6 4,381
0.6 4,365
0.6 1,456
0.6 3,484
0.6 5,283
0.5 1,306
0.5 1,490
0.5 1,395
0.5 1,891
0.5 1,760
0.5 1,680
0.28 1,004.2 821.899
0.28 1,005.0 814.802
0.28 1,005.0 814.81
0.30 1,458.9 1,150.06
0.30 1,454.9 1,145.79
0.75 1074.9
0.75 1071.9
0.45 712.4 382.187 0.75
0.75 524.8
0.34 1,244.8 914.585 917.1
1652-0634 SD1838 0.28 1,719.4 1,386.71 0.75 1266.8
1652-0490 1652-0485
1652-0485 1652-0484
1652-0484 1652-0483
1652-0483 1652-0482
1652-0482 1652-0481
1652-0481 1652-0476
1652-0476 1652-0475
1652-0475 1652-0472
1652-0472 1652-0469
0.23 0.22
0.24 0.21
0.22 0.24
0.43 0.23
0.26 402.0 342.847
452.0 390.997
433.2 366.292
567.9 496.446
533.5 462.036
523.0 441.042
170.7 88.683
595.4 508.559
523.9 429.18
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 254.6
286.3
274.4
359.7
337.9
331.3
108.1
377.2
331.9
8 61.0
8 66.9
8 71.4
8 71.4
8 82.0
8 82.0 0.5 338
8 86.9 290.3
237.1
0.5 1,937
0.5 1,635
4,068
8 94.8 3,433
Tuesday, October 15, 2024 Reg CC MTG, Page *237
EXISTING SCENARIO MODEL OUTPUT
Existing
Flow
Analysis Analysis Analysis Design Design Design Appt.
Units
Limit
Street Diam. Length
(in) (ft)
d/D Flow Excess
(gpm)
d/D Flow Excess
(gpm)
d/D SFR DUs
Ratio Limit
0.5 1,628
0.5 448
0.5 2,432
0.5 378
Name From MH To MH Slope (gpm) Ratio (gpm) Ratio (gpm)
1652-0469 1652-0468
1652-0468 1652-0467
1652-0467 1652-0612
1652-0612 1652-0466
1652-0466 1652-0630
1652-0383 1652-0386
1652-0386 1652-0388
1652-0388 1652-0393
1652-0393 1652-0394
1652-0394 1652-0399
1652-0399 1652-0400
1652-0400 1652-0406
1652-0406 1652-0407
1652-0407 1652-0409
1652-0409 1652-0410
1652-0410 1652-0411
8 8
309.3 0.0200
338.5 0.0040
203.4 0.0120
100.2 0.0010
299.2 0.0080
309.1 0.0160
135.8 0.0010
160.5 0.0300
218.8 0.0140
210.3 0.0290
326.5 0.0150
350.0 0.0170
342.8 0.0160
301.7 0.0140
75.0 0.0810
398.1 0.0140
295.7 0.0150
356.6 0.0190
331.8 0.0200
346.1 0.0190
356.9 0.0190
302.9 0.0170
55.3 0.0020
349.7 0.0150
271.8 0.0190
241.3 0.0140
238.2 0.0130
100.2
105.7
109.4
113.9
117.2
75.3 0.26 527.5 427.333
223.3 117.605
747.7 638.272
213.1 99.228
615.3 498.08
467.4 392.102
100.9 22.981
648.6 568.282
446.3 355.669
636.7 545.291
448.7 345.963
491.5 381.041
477.2 353.269
440.5 310.276
0.67 334.2 234.0 3,419
0.42 941
0.23 0.45
0.26 0.24
0.56 0.21
0.27 0.23
0.29 0.29
0.31 0.33
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
141.5
473.6
135.0
389.8
296.1
63.9 35.7
364.2
21.1 10
10 10
8 5,106
794
272.6
220.8
-14.0
330.5
192.1
311.9
181.5
200.9
178.4
148.8
536.5
140.0
141.9
276.7
287.6
270.6
261.1
245.8
28.4 0.5 1,897
0.5 1,494
3,985
3,137
8 78.0 0.5 88 184
8 80.4 410.9
282.7
403.3
284.2
311.3
302.3
279.0
668.7
282.0
286.5
322.8
336.4
322.7
322.6
307.3
100.2
286.0
324.0
283.0
267.1
0.5 2,165
0.5 1,355
0.5 2,077
0.5 1,318
0.5 1,452
0.5 1,346
0.5 1,182
0.5 3,518
0.5 1,155
0.5 1,172
0.5 1,766
0.5 1,837
0.5 1,742
0.5 1,706
0.5 1,614
4,546
2,845
4,362
2,768
3,048
2,826
2,482
7,387
2,425
2,462
3,708
3,858
3,658
3,582
3,388
691
8 90.7
8 91.4
8 102.7
110.5
123.9
130.2
132.2
142.0
144.6
46.1 8
8 8
8 0.21 1,055.6 923.412
8 0.34
0.34 0.18
0.18 0.19
0.21 0.21
0.41 0.24
0.23 0.25
0.25 445.1 303.128
452.3 307.718
509.5 463.455
531.0 482.211
509.4 457.307
509.3 447.756
485.1 423.561
158.2 86.388
451.5 379.71
511.5 438.223
446.7 371.151
421.6 346.049
1652-0411 SD1833 8
1652-0335 1652-0330
1652-0330 1652-0329
1652-0329 1652-0328
1652-0328 1652-0324
1652-0324 1652-0323
1652-0323 1652-0318
1652-0318 1652-0317
1652-0317 1652-0316
1652-0316 1652-0315
8 8 48.8
8 52.1
8 61.5
8 61.5
8 71.8 0.5 329
8 71.8 214.2
250.7
207.4
191.5
0.5 1,447
0.5 1,669
0.5 1,414
0.5 1,318
3,038
3,506
2,969
2,768
8 73.3
8 75.6
1652-0315 SD1828 8 75.6
Tuesday, October 15, 2024 Reg CC MTG, Page *238
EXISTING SCENARIO MODEL OUTPUT
Existing
Flow
Analysis Analysis Analysis Design Design Design Appt.
Units
Limit
Street Diam. Length
(in) (ft)
10 d/D Flow Excess
(gpm)
d/D Flow Excess
(gpm)
d/D SFR DUs
Name From MH To MH Slope (gpm) Ratio (gpm) Ratio (gpm) Ratio
0.5 Limit
1652-0174 1652-0184
1652-0184 1652-0185
1652-0185 1652-0189
1652-0189 1652-0190
1652-0190 1652-0192
1652-0192 1652-0193
1652-0193 1652-0194
1652-0194 1652-0201
1652-0201 1652-0202
1652-0202 1652-0204
1652-0204 1652-0617
1652-0617 1652-0616
1652-0616 1652-0208
1652-0208 1652-0211
1652-0211 1652-0212
1652-0212 1652-0217
1652-0224 1652-0223
1652-0223 1652-0624
1652-0624 1652-0222
1652-0222 1652-0221
1652-0221 1652-0220
1652-0220 1652-0219
1652-0219 1652-0218
1652-0218 1652-0217
336.8 0.0060
189.1 0.0120
179.1 0.0130
182.5 0.0060
176.2 0.0060
142.9 0.0070
36.2 0.0120
177.3 0.0060
240.6 0.0160
65.2 0.0170
70.8 0.0170
40.9 0.0170
182.0 0.0170
264.8 0.0120
198.2 0.0090
305.6 0.0060
286.1 0.0180
63.6 0.0020
104.2 0.0250
129.7 0.0200
315.8 0.0090
80.5 0.0010
281.4 0.0100
342.4 0.0080
315.7 0.0050
313.5
327.4
327.4
337.6
337.6
344.4
344.4
344.4
353.7
353.7
355.8
355.8
357.5
366.3
372.2
373.5
49.1 0.50 503.9 190.43
745.6 418.128
780.8 453.344
521.3 183.676
533.0 195.36
544.2 199.789
734.7 390.231
506.6 162.213
858.7 504.961
880.4 526.725
877.9 522.102
881.9 526.168
878.8 521.259
726.2 359.975
624.7 252.537
516.2 142.722
0.67 319.2 5.7 725 1,523
3,345
3,627
1,469
1,563
1,598
3,122
1,298
4,040
4,214
4,177
4,209
4,170
2,880
2,020
1,142
3,558
788
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 8
0.41 0.40
0.51 0.50
0.50 0.42
0.52 0.39
0.39 0.39
0.39 0.39
0.44 0.48
0.54 0.19
0.35 0.17
0.18 0.23
0.37 0.22
0.24 0.45
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.75
472.3
494.6
330.2
337.6
344.7
465.4
320.9
544.0
557.7
556.1
558.7
556.7
460.0
395.7
327.0
312.8
93.4 144.8
167.2
-7.4
0.5 1,593
0.5 1,727
0.5 0.5
0.5 700
744
761
0.0 0.3
120.9
-23.5
190.2
204.0
200.3
202.9
199.1
93.8 0.5 1,487
0.5 618
0.5 1,924
0.5 2,007
0.5 1,989
0.5 2,004
0.5 1,986
0.5 1,371
23.6 0.5
0.5 962
-46.5 544
263.7
44.4 493.8 444.7 0.5 1,694
8 49.0 147.5 98.462 0.5 375
591.1 542.114
529.7 480.738
347.1 298.142
131.1 81.633
367.8 317.292
333.4 281.887
929.9 504.408
8 49.0 374.5
335.6
219.9
83.1 325.4
286.6
170.9
33.6 0.5 2,065
0.5 1,831
0.5 1,136
4,337
3,846
2,385
653
8 49.0
8 49.0
8 49.5 0.5 311
8 50.5 233.0
211.2
685.1
182.5
159.7
259.6
0.5 1,209
0.5 1,074
0.6 1,922
2,538
2,255
4,035
8 51.5
1652-0217 SD1707 12 425.4
Tuesday, October 15, 2024 Reg CC MTG, Page *239
EXISTING SCENARIO MODEL OUTPUT
Existing
Flow
Analysis Analysis Analysis Design Design Design Appt.
Units
Limit
Street Diam. Length
(in) (ft)
d/D Flow Excess
(gpm)
d/D Flow Excess
(gpm)
d/D SFR DUs
Ratio Limit
0.5 1,335
Name From MH To MH Slope (gpm) Ratio (gpm) Ratio (gpm)
1651-0016 1651-0017
1651-0017 1651-0293
1651-0071 1651-0073
1651-0073 1651-0074
1651-0074 1651-0293
1651-0293 1651-0018
1651-0018 1651-0019
1651-0019 1651-0292
1651-0292 1651-0020
1651-0020 1651-0021
1651-0021 1651-0022
1651-0022 1651-0023
1651-0023 1651-0322
1651-0322 1651-0024
1651-0024 1651-0025
8 8
8 8
8 319.1 0.0110
367.3 0.0060
180.1 0.0030
166.9 0.0030
37.1 0.0050
122.8 0.0040
46.5 0.0020
303.0 0.0020
206.3 0.0020
284.3 0.0010
104.9 0.0030
211.6 0.0020
146.3 0.0160
57.3 0.0420
95.1 0.0140
272.0 0.0050
42.0 47.1
0.20 392.4 350.415
293.7 246.667
209.3 150.115
217.4 158.316
273.3 210.216
403.7 293.717
328.0 215.566
514.7 395.333
551.0 417.621
469.3 334.096
742.4 606.007
603.4 465.299
0.67 248.6 206.6 2,803
1,973
1,201
1,267
1,682
2,350
1,725
3,163
3,341
2,673
4,848
3,722
11,878
19,618
10,729
5,868
0.24 0.32
0.32 0.29
0.32 0.36
0.31 0.32
0.35 0.28
0.31 0.67
0.67 0.67
0.67 0.67
0.67 0.75
0.75 0.75
0.75 0.75
186.1
132.6
137.7
173.1
255.7
207.8
379.2
405.9
345.8
547.0
444.6
139.0
73.4 0.5
0.5 0.5
0.5 940
572
603
801
59.1 59.1 78.6
63.1 110.0
145.7
95.3 10
10 12
12 12
12 12
12 12
12 12
110.0
112.4
119.4
133.3
135.2
136.4
138.1
138.1
140.2
140.2
142.5
0.5 1,119
0.5 821
259.8
272.6
210.6
410.6
306.5
0.6 1,506
0.6 1,591
0.6 1,273
0.6 2,309
0.6 1,773
0.6 5,656
0.6 9,342
0.6 5,109
0.6 2,794
0.19 1,622.9 1,484.77
0.15 2,592.4 2,452.25
0.20 1,481.3 1,341.15
0.75 1195.7 1057.6
0.75 1910.0 1769.8
0.75 1091.4
0.75 645.4
951.2
1651-0025 SD1839 0.26 876.0 733.514 502.9
NOTE: The maximum number of new SFR DUs or Appartment Units in the most restrictive segments are highlighted in blue.
Tuesday, October 15, 2024 Reg CC MTG, Page *240
BUILDOUT SCENARIO 1 MODEL OUTPUT
Existing
Flow
Analysis Analysis
Flow Excess Analysis
Design
Flow
Design
Street Excess
Name
Diam.
(in)
Length
(ft)
Design
From MH To MH Slope (gpm) d/D Ratio (gpm) (gpm) d/D Ratio (gpm) (gpm) d/D Ratio 1652-0552 1652-0553
1652-0593 1652-0544
1652-0544 1652-0546
1652-0546 1652-0552
1652-0553 1652-0556
1652-0556 1652-0558
1652-0558 1652-0557
1652-0557 1652-0565
1652-0565 1652-0567
1652-0567 1652-0575
1652-0575 1652-0576
1652-0576 1652-0620
1652-0620 1652-0582
1652-0582 1652-0583
1652-0583 1652-0584
1652-0584 1652-0628
1652-0628 1652-0629
1652-0629 1652-0630
1652-0630 1652-0631
1652-0631 1652-0632
1652-0632 1652-0633
1652-0633 1652-0634
1652-0634 SD1838
1652-0490 1652-0485
1652-0485 1652-0484
1652-0484 1652-0483
1652-0483 1652-0482
1652-0482 1652-0481
1652-0481 1652-0476
1652-0476 1652-0475
8 8
264.3 0.0800
188.5 0.0230
68.8 0.0010
245.0 0.0200
263.0 0.0150
285.8 0.0130
239.0 0.0160
269.0 0.0120
175.3 0.0180
87.5 0.0010
262.8 0.0130
51.5 0.0020
209.3 0.0170
268.6 0.0100
244.9 0.0110
275.4 0.0060
275.0 0.0060
275.0 0.0060
203.3 0.0040
209.5 0.0040
193.0 0.0030
54.5 0.0030
139.3 0.0060
293.8 0.0120
202.5 0.0150
116.5 0.0140
198.3 0.0230
221.3 0.0210
261.5 0.0200
47.5 0.0020
121.7
99.8 0.20 1,055.4 933.7
461.3
42.1 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.75 0.75
0.75 0.75
0.75 0.75
0.75 0.75
0.67 0.67
0.67 0.67
0.67 0.67
0.67 668.5
355.5
89.9 546.8
255.6
-9.9
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.6
0.6 0.6
0.6 0.6
0.6 0.6
0.6 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.25 0.53
0.27 0.31
0.34 0.32
0.27 0.25
0.53 0.28
0.47 0.27
0.32 0.31
561.1
141.9
525.5
450.1
431.8
475.2
739.1
914.2
228.0
770.6
297.2
868.5
659.8
699.0
8 99.8
8 107.9
121.7
134.2
134.2
153.7
153.7
157.8
167.7
167.7
172.4
188.1
188.1
196.7
204.6
204.6
353.5
353.8
376.6
376.6
381.1
88.1 417.7
328.4
297.6
341.0
585.3
760.5
70.2 332.9
285.1
273.5
301.0
468.2
579.1
144.4
488.2
188.3
550.2
418.0
442.8
739.9
740.5
740.5
1074.9
1071.9
524.8
917.1
1266.8
254.6
286.3
274.4
359.7
337.9
331.3
108.1
225.1
163.4
139.3
166.8
314.4
425.4
-13.3
320.4
20.5 8
8 8
10 10
10 10
10 10
10 10
12 12
12 15
15 12
15 15
8 602.9
129.5
696.2
471.8
511.0
807.5
800.4
800.4
377.8
229.9
254.8
543.2
535.9
535.9
721.4
718.2
148.3
540.5
885.7
166.5
196.2
178.2
258.8
237.0
219.7
-3.5
0.29 1,004.2
0.29 1,005.0
0.29 1,005.0
0.32 1,458.9 1,105.4
0.32 1,454.9 1,101.2
0.49 712.4 335.8
0.36 1,244.8 868.2
0.31 1,719.4 1,338.3
0.28 0.27
0.28 0.25
0.26 0.28
0.51 402.0
452.0
433.2
567.9
533.5
523.0
170.7
313.8
361.9
337.0
467.0
432.5
411.4
59.1 8 90.1
8 96.2
8 100.9
100.9
111.6
111.6
8 8
8
Tuesday, October 15, 2024 Reg CC MTG, Page *241
BUILDOUT SCENARIO 1 MODEL OUTPUT
Existing
Flow
Analysis Analysis
Flow Excess Analysis
Design
Flow
Design
Street Excess
Name
Diam.
(in)
Length
(ft)
Design
From MH To MH Slope (gpm) d/D Ratio (gpm) (gpm) d/D Ratio (gpm) (gpm) d/D Ratio 1652-0475 1652-0472
1652-0472 1652-0469
1652-0469 1652-0468
1652-0468 1652-0467
1652-0467 1652-0612
1652-0612 1652-0466
1652-0466 1652-0630
1652-0383 1652-0386
1652-0386 1652-0388
1652-0388 1652-0393
1652-0393 1652-0394
1652-0394 1652-0399
1652-0399 1652-0400
1652-0400 1652-0406
1652-0406 1652-0407
1652-0407 1652-0409
1652-0409 1652-0410
1652-0410 1652-0411
1652-0411 SD1833
1652-0335 1652-0330
1652-0330 1652-0329
1652-0329 1652-0328
1652-0328 1652-0324
1652-0324 1652-0323
1652-0323 1652-0318
1652-0318 1652-0317
1652-0317 1652-0316
1652-0316 1652-0315
1652-0315 SD1828
8 8
204.1 0.0260
323.1 0.0200
309.3 0.0200
338.5 0.0040
203.4 0.0120
100.2 0.0010
299.2 0.0080
309.1 0.0160
135.8 0.0010
160.5 0.0300
218.8 0.0140
210.3 0.0290
326.5 0.0150
350.0 0.0170
342.8 0.0160
301.7 0.0140
75.0 0.0810
398.1 0.0140
295.7 0.0150
356.6 0.0190
331.8 0.0200
346.1 0.0190
356.9 0.0190
302.9 0.0170
55.3 0.0020
349.7 0.0150
271.8 0.0190
241.3 0.0140
238.2 0.0130
116.6
124.7
130.2
135.7
139.6
144.2
147.4
128.4
133.5
135.9
149.7
150.5
163.4
171.1
185.5
191.8
193.9
203.7
206.3
73.1 0.27
0.29 0.30
0.49 0.26
0.52 0.30
0.32 1.00
0.28 0.35
0.29 0.37
0.36 0.38
0.40 595.4
523.9
527.5
223.3
747.7
213.1
615.3
467.4
100.9
648.6
446.3
636.7
448.7
491.5
477.2
440.5
478.8
399.2
397.3
87.6 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
377.2
331.9
334.2
141.5
473.6
135.0
389.8
296.1
63.9 260.6
207.2
203.9
5.7 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
8 8
10 10
10 8
608.1
68.9 334.0
-9.2
467.9
339.0
-32.6
512.8
296.6
486.2
285.3
320.4
291.7
248.6
861.8
241.5
245.9
436.4
455.1
430.2
420.6
396.4
58.8 242.4
167.7
-69.6
275.0
133.0
252.8
120.9
140.2
116.8
87.2 8
8 410.9
282.7
403.3
284.2
311.3
302.3
279.0
668.7
282.0
286.5
322.8
336.4
322.7
322.6
307.3
100.2
286.0
324.0
283.0
267.1
8 8
8 8
8 8
8 0.26 1,055.6 474.8
8 0.42 78.3
0.42 0.23
0.23 0.24
0.25 0.26
0.50 0.28
0.27 0.29
0.30 445.1
452.3
509.5
531.0
509.4
509.3
485.1
158.2
451.5
511.5
446.7
421.6
8 80.2
8 249.7
260.5
243.5
233.9
218.6
0.9 8 75.9
8 79.2
8 88.7
8 88.7
8 99.3
8 99.3 352.2
410.6
343.4
318.3
186.7
223.1
179.7
163.8
8 100.9
103.3
103.3
8 8
Tuesday, October 15, 2024 Reg CC MTG, Page *242
BUILDOUT SCENARIO 1 MODEL OUTPUT
Existing
Flow
Analysis Analysis
Flow Excess Analysis
Design
Flow
Design
Street Excess
Name
Diam.
(in)
Length
(ft)
Design
From MH To MH Slope (gpm) d/D Ratio (gpm) (gpm) d/D Ratio (gpm) (gpm) d/D Ratio 1652-0174 1652-0184
1652-0184 1652-0185
1652-0185 1652-0189
1652-0189 1652-0190
1652-0190 1652-0192
1652-0192 1652-0193
1652-0193 1652-0194
1652-0194 1652-0201
1652-0201 1652-0202
1652-0202 1652-0204
1652-0204 1652-0617
1652-0617 1652-0616
1652-0616 1652-0208
1652-0208 1652-0211
1652-0211 1652-0212
1652-0212 1652-0217
1652-0224 1652-0223
1652-0223 1652-0624
1652-0624 1652-0222
1652-0222 1652-0221
1652-0221 1652-0220
1652-0220 1652-0219
1652-0219 1652-0218
1652-0218 1652-0217
1652-0217 SD1707
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
8 336.8 0.0060
189.1 0.0120
179.1 0.0130
182.5 0.0060
176.2 0.0060
142.9 0.0070
36.2 0.0120
177.3 0.0060
240.6 0.0160
65.2 0.0170
70.8 0.0170
40.9 0.0170
182.0 0.0170
264.8 0.0120
198.2 0.0090
305.6 0.0060
286.1 0.0180
63.6 0.0020
104.2 0.0250
129.7 0.0200
315.8 0.0090
80.5 0.0010
281.4 0.0100
342.4 0.0080
315.7 0.0050
524.0
536.7
536.7
547.0
546.9
553.7
553.7
553.7
563.2
563.0
565.3
565.2
567.1
576.1
582.0
583.4
58.4 0.69
0.54 0.53
0.69 0.68
0.68 0.56
0.72 0.51
0.50 0.51
0.50 0.51
0.57 0.64
0.74 0.21
0.38 0.19
0.20 0.25
0.41 0.24
0.26 0.58
503.9
745.6
780.8
521.3
533.0
544.2
734.7
506.6
858.7
880.4
877.9
881.9
878.8
726.2
624.7
516.2
493.8
147.5
591.1
529.7
347.1
131.1
367.8
333.4
929.9
-20.1
208.8
244.1
-25.7
-13.9
-9.5
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.75 319.2
472.3
494.6
330.2
337.6
344.7
465.4
320.9
544.0
557.7
556.1
558.7
556.7
460.0
395.7
327.0
312.8
93.4 -204.8
-64.4
-42.1
-216.7
-209.3
-209.0
-88.3
-232.8
-19.2
-5.3
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.6 181.0
-47.1
295.5
317.4
312.6
316.7
311.7
150.1
42.7 -9.2
-6.6
-10.4
-116.1
-186.3
-256.4
254.4
35.1 -67.2
435.4
8 58.4 89.1
8 58.3 532.8
471.4
288.8
72.3 374.5
335.6
219.9
83.1 316.1
277.3
161.6
24.2 8 58.3
8 58.3
8 58.8
8 59.9 307.9
272.5
284.2
233.0
211.2
685.1
173.1
150.3
39.4 8 60.9
12 645.7
Tuesday, October 15, 2024 Reg CC MTG, Page *243
BUILDOUT SCENARIO 1 MODEL OUTPUT
Existing
Flow
Analysis Analysis
Flow Excess Analysis
Design
Flow
Design
Street Excess
Name
Diam.
(in)
Length
(ft)
Design
From MH To MH Slope (gpm) d/D Ratio (gpm) (gpm) d/D Ratio (gpm) (gpm) d/D Ratio 1651-0016 1651-0017
1651-0017 1651-0293
1651-0071 1651-0073
1651-0073 1651-0074
1651-0074 1651-0293
1651-0293 1651-0018
1651-0018 1651-0019
1651-0019 1651-0292
1651-0292 1651-0020
1651-0020 1651-0021
1651-0021 1651-0022
1651-0022 1651-0023
1651-0023 1651-0322
1651-0322 1651-0024
1651-0024 1651-0025
1651-0025 SD1839
8 8
319.1 0.0110
367.3 0.0060
180.1 0.0030
166.9 0.0030
37.1 0.0050
122.8 0.0040
46.5 0.0020
303.0 0.0020
206.3 0.0020
284.3 0.0010
104.9 0.0030
211.6 0.0020
146.3 0.0160
57.3 0.0420
95.1 0.0140
272.0 0.0050
44.7 49.8
0.20 0.25
0.41 0.40
0.36 0.37
0.42 0.38
0.39 0.43
0.34 0.38
392.4
293.7
209.3
217.4
273.3
403.7
328.0
514.7
551.0
469.3
742.4
603.4
347.7
244.0
117.7
125.9
177.8
258.6
176.2
342.7
356.8
273.2
544.3
403.8
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.75
0.75 0.75
0.75 0.75
0.75 0.75
0.75 0.75
248.6
186.1
132.6
137.7
173.1
255.7
207.8
379.2
405.9
345.8
547.0
444.6
1195.7
1910.0
1091.4
645.4
203.9
136.3
41.0 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.6 0.6
0.6 0.6
0.6 0.6
0.6 0.6
0.6 8 91.6
8 91.5 46.2
8 95.6 77.6
10 10
12 12
12 12
12 12
12 12
12 145.1
151.8
172.0
194.2
196.1
198.0
199.6
199.6
201.4
201.4
207.4
110.6
56.0 207.2
211.7
149.7
348.9
245.0
996.1
1708.6
889.9
438.0
0.23 1,622.9 1,423.3
0.18 2,592.4 2,391.0
0.24 1,481.3 1,279.9
0.32 876.0 668.6
Green highlight - Watch List pipelines approaching replacement criteria.
Red highlight - Pipeline capacity is exceeded.
Tuesday, October 15, 2024 Reg CC MTG, Page *244
BUILDOUT SCENARIO 2 MODEL OUTPUT
Existing
Flow
Analysis Analysis Design
Flow
Design
Excess
(gpm)
Design
Street Diam. Length d/D
(in) (ft)
d/D Flow Excess
(gpm)
Analysis
d/D Ratio
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.75
0.75 0.75
0.75 0.75
0.75 0.75
0.75 0.67
0.67 0.67
0.67 0.67
0.67 0.67
Name From MH To MH Slope (gpm) Ratio (gpm)
1,055.4
561.1
141.9
525.5
450.1
431.8
475.2
739.1
914.2
228.0
770.6
297.2
868.5
659.8
699.0
1,004.2
1,005.0
1,005.0
1,458.9
1,454.9
712.4
1,244.8
1,719.4
402.0
452.0
433.2
567.9
533.5
523.0
170.7
(gpm) Ratio
1652-0552 1652-0553
1652-0593 1652-0544
1652-0544 1652-0546
1652-0546 1652-0552
1652-0553 1652-0556
1652-0556 1652-0558
1652-0558 1652-0557
1652-0557 1652-0565
1652-0565 1652-0567
1652-0567 1652-0575
1652-0575 1652-0576
1652-0576 1652-0620
1652-0620 1652-0582
1652-0582 1652-0583
1652-0583 1652-0584
1652-0584 1652-0628
1652-0628 1652-0629
1652-0629 1652-0630
1652-0630 1652-0631
1652-0631 1652-0632
1652-0632 1652-0633
1652-0633 1652-0634
8 8
264.3 0.0800
188.5 0.0230
68.8 0.0010
245.0 0.0200
263.0 0.0150
285.8 0.0130
239.0 0.0160
269.0 0.0120
175.3 0.0180
87.5 0.0010
262.8 0.0130
51.5 0.0020
209.3 0.0170
268.6 0.0100
244.9 0.0110
275.4 0.0060
275.0 0.0060
275.0 0.0060
203.3 0.0040
209.5 0.0040
193.0 0.0030
54.5 0.0030
139.3 0.0060
293.8 0.0120
202.5 0.0150
116.5 0.0140
198.3 0.0230
221.3 0.0210
261.5 0.0200
47.5 0.0020
122.4 0.20 933.0 668.5 546.1 0.5
100.3
100.3
108.6
122.4
134.9
134.9
154.5
154.5
158.5
168.5
168.5
173.1
188.8
188.8
197.5
205.4
205.4
355.6
355.8
378.7
378.7
383.4
89.4 0.25
0.53 0.27
0.32 0.34
0.32 0.28
0.25 0.53
0.28 0.47
0.27 0.32
0.31 0.29
0.29 0.29
0.32 0.32
0.49 0.36
0.31 0.28
0.27 0.29
0.26 0.26
0.28 0.51
460.8
41.6 355.5
89.9 255.1
-10.4
224.3
162.7
138.6
166.1
313.7
424.7
-14.1
319.7
19.8 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.6
0.6 0.6
0.6 0.6
0.6 0.6
0.6 0.5
0.5 0.5
0.5 0.5
0.5 0.5
8 8 417.0
327.7
296.8
340.2
584.6
759.8
69.5 332.9
285.1
273.5
301.0
468.2
579.1
144.4
488.2
188.3
550.2
418.0
442.8
739.9
740.5
740.5
1074.9
1071.9
524.8
917.1
1266.8
254.6
286.3
274.4
359.7
337.9
331.3
108.1
8 8
8 10
10 10
10 10
10 10
10 12
12 12
15 15
12 15
15 8
602.1
128.7
695.4
471.0
510.2
806.8
799.6
799.6
1,103.3
1,099.1
333.7
866.1
1,336.1
312.6
360.7
335.8
465.7
431.3
410.2
57.8 377.1
229.2
254.0
542.4
535.1
535.1
719.3
716.1
146.1
538.4
883.5
165.3
195.0
177.0
257.6
235.8
218.5
-4.7
1652-0634 SD1838
1652-0490 1652-0485
1652-0485 1652-0484
1652-0484 1652-0483
1652-0483 1652-0482
1652-0482 1652-0481
1652-0481 1652-0476
1652-0476 1652-0475
8 91.3
8 97.5
8 102.1
102.1
112.9
112.9
8 8
8
Tuesday, October 15, 2024 Reg CC MTG, Page *245
BUILDOUT SCENARIO 2 MODEL OUTPUT
Existing
Flow
Analysis Analysis Design
Flow
Design
Excess
(gpm)
Design
Street Diam. Length d/D
(in) (ft)
d/D Flow Excess
(gpm)
Analysis
d/D Ratio
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 Name From MH To MH Slope (gpm) Ratio (gpm) (gpm) Ratio 1652-0475 1652-0472
1652-0472 1652-0469
1652-0469 1652-0468
1652-0468 1652-0467
1652-0467 1652-0612
1652-0612 1652-0466
1652-0466 1652-0630
1652-0383 1652-0386
1652-0386 1652-0388
1652-0388 1652-0393
1652-0393 1652-0394
1652-0394 1652-0399
1652-0399 1652-0400
1652-0400 1652-0406
1652-0406 1652-0407
1652-0407 1652-0409
1652-0409 1652-0410
1652-0410 1652-0411
8 8
204.1 0.0260
323.1 0.0200
309.3 0.0200
338.5 0.0040
203.4 0.0120
100.2 0.0010
299.2 0.0080
309.1 0.0160
135.8 0.0010
160.5 0.0300
218.8 0.0140
210.3 0.0290
326.5 0.0150
350.0 0.0170
342.8 0.0160
301.7 0.0140
75.0 0.0810
398.1 0.0140
295.7 0.0150
356.6 0.0190
331.8 0.0200
346.1 0.0190
356.9 0.0190
302.9 0.0170
55.3 0.0020
349.7 0.0150
271.8 0.0190
241.3 0.0140
238.2 0.0130
117.9 0.27 595.4 477.6 377.2 259.3 0.5
126.0
131.5
137.0
140.9
145.5
148.7
151.5
157.2
159.5
173.5
174.3
187.2
195.0
209.4
215.8
217.8
227.6
230.3
74.3 0.30
0.30 0.49
0.26 0.52
0.30 0.35
1.00 0.30
0.38 0.32
0.40 0.38
0.41 0.43
0.27 0.44
0.44 0.23
0.23 0.24
0.25 0.26
0.50 0.28
0.27 0.29
0.30 523.9
527.5
223.3
747.7
213.1
615.3
467.4
100.9
648.6
446.3
636.7
448.7
491.5
477.2
440.5
1,055.6
445.1
452.3
509.5
531.0
509.4
509.3
485.1
158.2
451.5
511.5
446.7
421.6
398.0
396.0
86.3 331.9
334.2
141.5
473.6
135.0
389.8
296.1
63.9 205.9
202.7
4.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 8
8 10
10 10
8 606.8
67.6 332.8
-10.5
241.1
144.6
-93.2
251.4
109.3
229.1
97.0 466.6
316.0
-56.2
489.1
272.9
462.5
261.5
296.5
267.7
224.7
837.8
217.5
222.0
435.2
453.9
429.0
419.4
395.2
57.6 8
8 410.9
282.7
403.3
284.2
311.3
302.3
279.0
668.7
282.0
286.5
322.8
336.4
322.7
322.6
307.3
100.2
286.0
324.0
283.0
267.1
8 8
8 8 116.4
8 92.8
8 63.2
8 450.9
8 54.4
1652-0411 SD1833 8 56.2
1652-0335 1652-0330
1652-0330 1652-0329
1652-0329 1652-0328
1652-0328 1652-0324
1652-0324 1652-0323
1652-0323 1652-0318
1652-0318 1652-0317
1652-0317 1652-0316
1652-0316 1652-0315
8 248.4
259.3
242.3
232.7
217.4
-0.4
8 77.1
8 80.4
8 89.9
8 89.9
8 100.6
100.6
102.2
104.6
104.6
8 350.9
409.4
342.2
317.1
185.4
221.9
178.4
162.5
8 8
1652-0315 SD1828 8
Tuesday, October 15, 2024 Reg CC MTG, Page *246
BUILDOUT SCENARIO 2 MODEL OUTPUT
Existing
Flow
Analysis Analysis Design
Flow
Design
Excess
(gpm)
Design
Street Diam. Length d/D
(in) (ft)
d/D Flow Excess
(gpm)
Analysis
d/D Ratio
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.67 0.67
0.75 Name From MH To MH Slope (gpm) Ratio (gpm) (gpm) Ratio 1652-0174 1652-0184
1652-0184 1652-0185
1652-0185 1652-0189
1652-0189 1652-0190
1652-0190 1652-0192
1652-0192 1652-0193
1652-0193 1652-0194
1652-0194 1652-0201
1652-0201 1652-0202
1652-0202 1652-0204
1652-0204 1652-0617
1652-0617 1652-0616
1652-0616 1652-0208
1652-0208 1652-0211
1652-0211 1652-0212
1652-0212 1652-0217
1652-0224 1652-0223
1652-0223 1652-0624
1652-0624 1652-0222
1652-0222 1652-0221
1652-0221 1652-0220
1652-0220 1652-0219
1652-0219 1652-0218
1652-0218 1652-0217
10 10
10 10
10 10
10 10
10 10
10 10
10 10
10 10
8 336.8 0.0060
189.1 0.0120
179.1 0.0130
182.5 0.0060
176.2 0.0060
142.9 0.0070
36.2 0.0120
177.3 0.0060
240.6 0.0160
65.2 0.0170
70.8 0.0170
40.9 0.0170
182.0 0.0170
264.8 0.0120
198.2 0.0090
305.6 0.0060
286.1 0.0180
63.6 0.0020
104.2 0.0250
129.7 0.0200
315.8 0.0090
80.5 0.0010
281.4 0.0100
342.4 0.0080
315.7 0.0050
590.6 0.76 503.9 -86.7 319.2 -271.4 0.5
603.3
603.3
613.6
613.5
620.3
620.3
620.3
629.9
629.8
631.9
631.9
633.7
642.7
648.8
650.1
58.9 0.58
0.56 0.76
0.75 0.74
0.60 0.79
0.55 0.54
0.54 0.54
0.54 0.62
0.69 0.81
0.21 0.39
0.19 0.20
0.25 0.41
0.24 0.26
0.62 745.6
780.8
521.3
533.0
544.2
734.7
506.6
858.7
880.4
877.9
881.9
878.8
726.2
624.7
516.2
493.8
147.5
591.1
529.7
347.1
131.1
367.8
333.4
929.9
142.3
177.5
-92.2
-80.5
-76.1
114.3
-113.7
228.8
250.6
246.0
250.0
245.1
83.5 472.3
494.6
330.2
337.6
344.7
465.4
320.9
544.0
557.7
556.1
558.7
556.7
460.0
395.7
327.0
312.8
93.4 -131.0
-108.7
-283.3
-275.9
-275.6
-154.9
-299.3
-85.9
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.5
0.5 0.6
-72.1
-75.8
-73.2
-77.1
-182.7
-253.0
-323.1
253.9
34.6 -24.1
-133.9
434.9
8 58.8 88.7
8 58.8 532.3
471.0
288.4
71.8 374.5
335.6
219.9
83.1 315.7
276.8
161.1
23.8 8 58.8
8 58.8
8 59.3
8 60.3 307.5
272.0
216.9
233.0
211.2
685.1
172.7
149.8
-27.9
8 61.3
1652-0217 SD1707 12 713.0
Tuesday, October 15, 2024 Reg CC MTG, Page *247
BUILDOUT SCENARIO 2 MODEL OUTPUT
Existing
Flow
Analysis Analysis Design
Flow
Design
Excess
(gpm)
Design
Street Diam. Length d/D
(in) (ft)
d/D Flow Excess
(gpm)
Analysis
d/D Ratio
0.67 Name From MH To MH Slope (gpm) Ratio (gpm) (gpm) Ratio 1651-0016 1651-0017
1651-0017 1651-0293
1651-0071 1651-0073
1651-0073 1651-0074
1651-0074 1651-0293
1651-0293 1651-0018
1651-0018 1651-0019
1651-0019 1651-0292
1651-0292 1651-0020
1651-0020 1651-0021
1651-0021 1651-0022
1651-0022 1651-0023
1651-0023 1651-0322
1651-0322 1651-0024
1651-0024 1651-0025
8 8
319.1 0.0110
367.3 0.0060
180.1 0.0030
166.9 0.0030
37.1 0.0050
122.8 0.0040
46.5 0.0020
303.0 0.0020
206.3 0.0020
284.3 0.0010
104.9 0.0030
211.6 0.0020
146.3 0.0160
57.3 0.0420
95.1 0.0140
272.0 0.0050
44.9 0.20 392.4 347.5 248.6 203.7 0.5
49.9 94.6
0.25 0.41
0.40 0.37
0.37 0.42
0.38 0.39
0.43 0.34
0.38 0.23
0.18 0.24
0.32 293.7
209.3
217.4
273.3
403.7
328.0
514.7
551.0
469.3
742.4
603.4
1,622.9
2,592.4
1,481.3
876.0
243.8
114.7
122.9
174.7
255.4
172.8
339.0
352.7
269.1
540.2
399.7
1,419.2
2,386.8
1,275.7
664.2
0.67 186.1
132.6
137.7
173.1
255.7
207.8
379.2
405.9
345.8
547.0
444.6
1195.7
1910.0
1091.4
645.4
136.1
38.0 0.5
0.5 0.5
0.5 0.5
0.5 0.6
0.6 0.6
0.6 0.6
0.6 0.6
0.6 0.6
8 0.67
8 94.5 0.67 43.2
8 98.6 0.67 74.5
10 10
12 12
12 12
12 12
12 12
12 148.4
155.2
175.7
198.3
200.1
202.2
203.7
203.7
205.6
205.6
211.8
0.67 107.4
0.67 52.6
0.75 203.5
207.6
145.6
344.8
240.9
992.0
1704.4
885.8
433.6
0.75 0.75
0.75 0.75
0.75 0.75
0.75 1651-0025 SD1839 0.75
Green highlight - Watch List pipelines approaching replacement criteria.
Red highlight - Pipeline capacity is exceeded.
Tuesday, October 15, 2024 Reg CC MTG, Page *248
APPENDIX F
HARBOR HILLS PRIVATE SEWER SYSTEM
TECHNICAL MEMORANDUM
Tuesday, October 15, 2024 Reg CC MTG, Page *249
TECHNICAL MEMORANDUM
To:
From: Kim Alexander
Date: August 8, 2024
Jenn Howell
Subject: Harbor Hills Private Sewer System
Background
Psomas has been working with the City on the preparation of the City’s Sewer System Master Plan. As part of the master planning process, we have identified buildout capacity constraints along the 10-inch pipeline running through residential back yards between Pacific Coast Highway (PCH) and Ebony (back yard pipeline). In addition to capacity constraints, this pipeline was constructed in the 1930s and has structural damage identified in CCTV review. The alignment through back yards creates maintenance and access issues. A proposed capital improvement project would replace the approximately 2,800 LF of deficient pipeline aligned through back yards with 9,800 LF of pipeline located within roadways, including new pipelines to redirect flows. This Capital Improvement Project (CIP) is identified as CIP #1 in the City of Lomita 2025 Sewer System Master Plan (Master Plan).
CIP #1 will require long-term planning, including a preliminary design level analysis to determine project feasibility and the optimum alignment. As such, the Master Plan provides a near-term alternative to divert a portion of the flow upstream of the deficient pipelines to the Los Angeles County Sanitation District trunk sewer along Western Avenue, thus increasing available capacities of these existing pipelines and eliminating pipeline deficiencies. This diversion improvement is designated as DIV #1 and documented in the Master Plan with the location illustrated on Figure 1, attached.
Harbor Hills Sewer
The sewer basin tributary to the back yard pipeline includes the 301-unit Harbor Hills Public Housing Development (Harbor Hills), owned by the Los Angeles County Housing Authority.
Sewer plans obtained for Harbor Hills (Attachment A) were discovered early in the master planning process and it was determined that the site discharges to the north, toward the back yard pipeline as illustrated on Figure 1. The Harbor Hills on-site sewers are included in the Los Angeles County Consolidated Sewer Maintenance District’s (CSMD) online mapping shown in green on Figure 2.
Tuesday, October 15, 2024 Reg CC MTG, Page *250
Jenn Howell
August 8, 2024
Further review of the tributary basin was conducted to define the area tributary to the proposed flow diversion location (DIV #1) and calculate the amount of flow that could potentially be diverted away from the back yard pipeline. The review of as-built plans (Attachment A) found that the neighborhood located immediately west of Harbor Hills discharges through the Housing Authority site via the on-site sewers. These private/on-site sewers are illustrated by yellow dashed lines on Figure 1. As a result, City sewer flows are being routed through City pipelines, then through the private/on-site pipelines within LA County Housing Authority property, then back to City pipelines. The areas within the City that are tributary to the Harbor Hills on-site sewers are illustrated in Figure 3 based on the as-built plan research.
City sewer flow through the Harbor Hills on-site system has been estimated based on the tributary land use data and flow factors developed in the Master Plan. The City flow through Harbor Hills is summarized in Table 1 below. This flow is in addition to the on-site flow from Harbor Hills, also summarized in Table 1.
Table 1: Flow Through Harbor Hills On-Site Sewer
Residential
Units
ADWF
(gpm)1
PDWF
(gpm)2 Land Use Acres
Off-Site
Commercial
Low Density Residential
Total Off-Site
On-Site
0 120
120
6.6 20.9
27.5 7.2
17.5 24.7
12.3 31.5
43.8 Harbor Hills Housing
Total
301
421
27.0 54.5
20.9 45.6
37.6 81.4
(1) Existing average dry weather sewer flow
(2) Existing peak dry weather sewer flow
Recommendations
The GIS mapping available through the CSMD shows the identified tributary areas routed away from Harbor Hills, contrary to the as-built plans. The neighborhood located to the west of Harbor Hills is shown discharging toward Eshelman Avenue as shown on Figure 2.
Additionally, the pipeline along Western Avenue, adjacent to Harbor Hills, is shown discharging to the south (Figure 2). The CSMD designates the Harbor Hills on-site pipelines in their GIS mapping as “Non-CSMD Sewers.” As such, these sewers are not being maintained by the CSMD on behalf of the City, and it is doubtful the Housing Authority is maintaining them.
2 Tuesday, October 15, 2024 Reg CC MTG, Page *251
Jenn Howell
August 8, 2024
The Harbor Hills on-site sewers carrying City flows are illustrated Figure 1 and Figure 3.
The following is recommended for the continued reliability and maintenance of these sewers to serve City flows:
1. Meet with CSMD to discuss corrections to their GIS mapping and the Harbor Hills on-site sewers carrying City sewage.
2. Contact Harbor Hills and/or the Los Angeles County Housing Authority to determine existing maintenance practices, if any.
3. Conduct closed-circuit television (CCTV) inspection and condition assessment of the on-site sewers carrying City sewage. This can be done by CSMD or a private company.
4. Coordinate with the Los Angeles County Housing Authority for the City to discuss financial arrangements for City acquisition of these sewers along with a right-of-way for access.
5. Coordinate with the CSMD to add these sewers to their service area for ongoing inspection and maintenance.
Enclosures:
Figures 1 through 3, Attachment A
3 Tuesday, October 15, 2024 Reg CC MTG, Page *252
Legend
DIV #1
Back Yard Pipe Basin
PCH
LACSD Trunk Sewer
Out of Service County Pipe
261st Street
SMP DIV #1
Flow Diversion 262nd Street
Alternate
Diversion Location
Harbor Hills
On-Site Sewers
Carrying City
Sewage
Harbor
Hills
Housing
Harbor
Hills
Housing
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
FIGURE 1
Flow Diversion Improvement / Harbor Hills Sewer
Tuesday, October 15, 2024 Reg CC MTG, Page *253
HARBOR
HILLS
HARBOR
HILLS
Flow Direction
on As-Built Plans
FIGURE 2
CSMD On-line GIS Mapping Tuesday, October 15, 2024 Reg CC MTG, Page *254 Legend
Harbor Hills Tributary
Back Yard Pipe Basin
LACSD Trunk Sewer
262nd Street
263rd Street
Out of Service County Pipe
Harbor Hills Sewer
Harbor Hills
On-Site Sewers
Carrying City
Sewage
Harbor
Hills
Housing
Harbor
Hills
Housing
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
FIGURE 3
Area Tributary to Harbor Hills On-Site Sewer
Tuesday, October 15, 2024 Reg CC MTG, Page *255
ATTACHMENT A
AS-BUILT SEWER PLANS
Tuesday, October 15, 2024 Reg CC MTG, Page *256
HARBOR HILLS HOUSING SEWER PLANS (1939)
Tuesday, October 15, 2024 Reg CC MTG, Page *257
1 2
3 4
16 21
Western
193'
Western
223'
Western
248'
185'
LATER REVERSED FLOW
(TRACT NO. 25201)
TRACT NO. 25201 SEWER PLANS (1966)
1 TO: City Council
FROM: Andrew Vialpando, City Manager
PREPARED BY: Kathleen Gregory, City Clerk
MEETING DATE: October 15, 2024
SUBJECT: Discussion and Consideration of an Appointment to fill an Unscheduled Vacancy on the Parks and Recreation Commission
RECOMMENDATION
Review list of previously interviewed applicants and make a decision to appoint a commissioner to fill the vacancy.
BACKGROUND
On Tuesday, September 24, 2024, Parks and Recreation Commissioner Lindsey Colbert submitted her resignation from the commission. A special vacancy notice was posted as required by Government Code 54974 on September 25. Earlier this year in June, the Council interviewed candidates for open positions on the Planning, Public Safety Traffic, and Parks and Recreation Commissions. Of the list of applicants Christina De Leon, George Kivett, and Kyle Wade expressed interest in serving on the commission.
As no other applications have been received from the posting of the vacancy notice, staff recommends that the Council review the list and make an appointment of a commissioner to serve on the Parks and Recreation Commission for the remainder of the term which ends June 2025.
FISCAL IMPACT
There are no financial implications resulting from this recommendation.
CITY OF LOMITA
CITY COUNCIL REPORT
Item No. SCH 8b
Tuesday, October 15, 2024 Reg CC MTG, Page *265
2 OPTIONS
1. Approve the recommendation.
2. Provide further direction.
ATTACHMENTS
1. Commissioner Applications
Reviewed by: Approved by:
_______________________ ______________________
Gary Y. Sugano Andrew Vialpando
Assistant City Manager City Manager
Prepared by:
__________________________
Kathleen Gregory, City Clerk
Tuesday, October 15, 2024 Reg CC MTG, Page *266
Tuesday, October 15, 2024 Reg CC MTG, Page *267
Attachment No. 1
Tuesday, October 15, 2024 Reg CC MTG, Page *268
Tuesday, October 15, 2024 Reg CC MTG, Page *269
Tuesday, October 15, 2024 Reg CC MTG, Page *270
Tuesday, October 15, 2024 Reg CC MTG, Page *271
Tuesday, October 15, 2024 Reg CC MTG, Page *272