June 3, 2009 TO: Mr. Nicholas Agbobu Engineering, Budget, and Office Operations

June 3, 2009
TO:
Mr. Nicholas Agbobu
Engineering, Budget, and Office Operations
FROM:
Robert Swartz
Field Operations
CONSOLIDATED SEWER MAINTENANCE DISTRICT
CONDITION ASSESSMENT PROGRAM REPORT
PROJECT YOTV0607C
This memo is to inform you that as part of the Sewer Condition Assessment Program,
the County of Los Angeles Department of Public Works Consolidated Sewer
Maintenance District has completed the closed-circuit television (CCTV) inspection of
9,475 feet or approximately 0.5 percent of the sewer system within Unincorporated
County maintained by the District's Central Yard.
The attached report outlines the structural and maintenance ratings of your system
based on the Pipeline Assessment and Certification Program's rating methodology.
Included in the report are the following:
3
Condition Assessment Report
Project Overview Map (Enclosure 1)
O Quick Maintenance Rating Report Priority List and Quick Maintenance Rating
Map (Enclosure 2)
• Quick Structural Rating Report Priority List and Quick Structural Rating Map
(Enclosure 3)
9
Infrastructure Inspection Reports for Grades 4 and 5 (Enclosure 4)
o CCTV Sewer Inspection Project Schedule (Enclosure 5)
The Condition Assessment Report will provide details regarding the maintenance and
structural condition of our sewer mainlines. This information can be included in our
agency's Sewer System Management Plan as a reference in Chapter 8.0 System
Evaluation and Capacity Assurance Plan. The segments with critical maintenance
issues have been cleaned and, in some instances, have been incorporated into our
routine cleaning schedule for continued monitoring. In addition, the segments with
severe structural defects have either been repaired or will be scheduled for repair as
part of the ongoing Accumulative Capital Outlay Project.
PK:
- CCTMOTV0607 Projects\YOTV060709-Final_Reports_by_JUR\ZLADMem0_0607C_ZLAC.doc
Attach.
bc: RS, FV, File (YOTV0607C)
CONDITION ASSESSMENT REPORT
COUNTY OF LOS ANGELES DEPARTMENT OF PUBLIC WORKS
CONSOLIDATED SEWER MAINTENANCE DISTRICT
PROJECT NAME:
PROJECT DATE:
SUP. DISTRICT(s):
Report By:
Y0TV0607C
02/01/07 – 06/04/07
1
Phyo Kyaw
PROJECT MGR:
CONTACT NO:
MAP PAGE(S):
Report Date:
Kari Eskridge
(626) 300-3390
1970,1971,2023,2024 & 2076
06/01/09
INTRODUCTION
As part of the Sewer Condition Assessment Program, the County of Los Angeles
Department of Public Works Consolidated Sewer Maintenance District has completed
the closed-circuit television (CCTV) inspection of 9,475 feet or approximately 0.5
percent of the Unincorporated Los Angeles County sewer system maintained by the
District’s Central Yard.
The Sewer Condition Assessment Program utilizes the Pipeline Assessment and
Certification Program (PACP) Quick Rating methodology to rank the structural and
maintenance ratings of your system based on industry standards.
PROJECT AREA AND DESCRIPTION
Project Y0TV0607C included sewer lines located in both Unincorporated County of
Los Angeles area and the City of Pico Rivera. Enclosed for your reference is an
overview map of the project area (Enclosure 1).
DEFECT GRADE DESCRIPTION
The Quick Rating indicates the number of occurrences for the highest severity grade for
each pipe segment for either maintenance or structural defects. A grade of 1 indicates
that a pipe segment is in excellent condition with minor defects, while a grade of 5
indicates that a pipe segment requires immediate attention. A detailed breakdown of the
five possible defect grades is as follows:
Grade
Description
Estimate time to Failure
1:
EXCELLENT: Minor Defects.
Unlikely in the foreseeable future
2:
GOOD: Defects that have not begun to deteriorate.
20 years or more
3:
FAIR: Moderate defects that will continue to
deteriorate.
10 to 20 years
4:
POOR: Severe defects that will become grade 5
defects within the foreseeable future.
5 to 10 years
5:
IMMEDIATE ATTENTION: Defects requiring
immediate attention.
Has failed or will likely fail within the
next 5 years
MAINTENANCE REPORT
Our inspection revealed that approximately 90.6 percent of the system televised was
free of blockages or restrictions that would impede sewer flows. However, the
remaining 9.4 percent of the inspected pipe segments within the Unincorporated County
of Los Angeles area had a PACP maintenance grade of 4 or 5 as indicated in the Quick
Maintenance Rating Table shown below. These segments have been incorporated into
our routine cleaning schedule with corrective action taken as noted on the Quick
Maintenance Rating Report Priority List (Enclosure 2). Also included is a color-coded
map showing the quick maintenance rating for each pipe segment.
QUICK MAINTENANCE RATING TABLE
DEFECT
GRADE
1: Excellent
2: Good
3: Fair
4: Poor
5: Immediate
Attention
TOTAL
PIPE
LENGTH
(FT)
PERCENT TOTAL
INSPECTED PIPE
LENGTH
NO. SEGMENTS
333
7,680
566
600
3.5
81.1
6.0
6.3
2
35
2
3
296
3.1
1
9,475
100.0
43
STRUCTURAL REPORT
Our inspection revealed that approximately 98.1 percent of the inspected pipe segments
within the Unincorporated County of Los Angeles were free of severe structural defects.
However, the remaining 1.9 percent of the inspected pipe segments had a PACP
structural grade of 5 as indicated in the Quick Structural Rating Table shown below.
The only segment in the Quick Structural Rating Report Priority List (Enclosure 3) had
been addressed and repaired by the District’s maintenance crew. A color-coded map
showing the Quick Structural Rating for each pipe segment is located in Enclosure 3. A
copy of the actual inspection report for this segment is included in Enclosure 4.
QUICK STRUCTURAL RATING TABLE
DEFECT
GRADE
1: Excellent
2: Good
3: Fair
4: Poor
5: Immediate
Attention
TOTAL
FUTURE PROJECTS
PIPE
LENGTH
(FT)
PERCENT TOTAL
INSPECTED PIPE
LENGTH
NO. SEGMENTS
7,044
0
2,252
0
74.3
0.0
23.8
0.0
31
0
11
0
179
1.9
1
9,475
100.0
43
The Sewer Condition Assessment Program will be performing future closed-circuit
television (CCTV) inspection of the remaining sewer lines within the Unincorporated
County of Los Angeles maintained by the Central Yard. For your reference, the CCTV
Sewer Inspection project schedule is listed in Enclosure 5.
ENCLOSURE 1:
Project Overview Map
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!
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!
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**
LO
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CH
!
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LO
!
(!
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!
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MO
****
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****
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***
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BLVD
S 4T
H ST
UP RR
SV
A IL
AV
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IC
S 5T
H ST
W OL
!
(
(
!!
(
!
(
!
(
Trunk Mh
!
(
Non SMD Maintained MH
SMD Operations Maps
Y0TV0607C
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.
NOVEMBER 2008
Y0TV0607C_Overview.mdx
ENCLOSURE 2:
• Quick Maintenance Rating Report
Priority List
• Quick Maintenance Rating Map
ENCLOSURE 2
QUICK MAINTENANCE RATING REPORT PRIORITY LIST
UNINCORPORATED LOS ANGELES COUNTY (Y0TV0607C)
as of 06/04/07
Item
No.
QMR
Start MH
1
2
5321
4131
2076-0054
2076-0059
3
4121
2076-0038
4
4121
2076-0058
End MH
Street
2076-0066 PIONEER BV
2076-0058 ALLEY by OBREGON
and 605 FWY
2076-0037 OBREGON ST
2076-0056 ALLEY by OBREGON
and 605 FWY
Observation
Corrective Action Taken
Sag
Deposits; roots
Hydrojet (Completed 3/25/09)
Hydrojet (Completed 4/2/09)
Broken and multiple fractures with
soil visible and roots ball
Roots
Emergency Project (Point Repair) by SMD
Central Yard: Completed November 2008
Rodder (Completed 3/31/09)
ENCLOSURE 2
**
***
CCTV PROJECT
Y0TV0607C
ST
RO
AG
NG
E
61
!
(
GR
E
!
(
R
46
44
AR
M
!
(45
CO
!
(
!
(
Y
EY
RL
CA
AL
D
A
L
DR
IL
N
RA
DR
!
(
52
!
(
68
DI
NO
70
AV
!
(71
72
!
(
Standard
#
*
DROP
Shallow
W
X
Trap
!
?
Siphon
P
Í
SMD Pump Satations
+
C
SMD Treatment Plants
Maintained by Others:
CH
O
***
**
Trunk Sewerlines
DR
Non SMD Sanitary Sewers
!
(
Trunk Mh
!
(
Non SMD Maintained MH
Parcel Boundary
AV
SMD Operations Maps
ER
FL
AL
D
AV
BE
N
OR
CH
AR
D
RA
N
ED
AR
EL
HE
BE
RN
79
AV
!
(
ST
M
GE
FL
O
51
Manhole Type
AV
!
(
67
!
(
LO
RE
NE
SMD Manholes
!
U Other
"
‚
AV
50
BE
N
66
!
(
VD
!
(
LO
CK
!
(
69
*****
AV
RO
DM
RE
CO
AN
AV
LE
AD
E
BL
AV
NB
15
XIT
!
(
UP
IE
R
5: IMMEDIATE ATTENTION
48
SE
I-60
5
!
(
AN
RR
IT
T
4: POOR
ER
ERA
PIO
N
!
(
OR
698
UP
W
H
!
(
3: FAIR
47
AV
53
2: GOOD
!
(49
RR
***
**
QMR
1: EXCELLENT
!
(
697
510
SMD Sanitary Sewers
CT
!
(
AD
E
37
54
ESP
!
(
O
Legend
LE
BRIEL
SAN G
A
!
(
DA
!
(
65
340
Feet
38
AV
!
(
55
170
39
!
(
NZA
A
!
(
0
35
D
V
36
EE
RB
LV
SA
V
BL E
!
(
SA N G
AV
REZ
JUA
NO
43
!
(
ABRIE
L RIV
ER F R
WY
!
(
!
(
!
(
!
(
RIVER
57
C-2076
C-2023
40
IN
G
695
!
(
41
58
F RW Y
!
(
AV
WHITTIER
42
DE
!
(
AL
ST
N
GG
GON
BE
OBR
E
!
(
PICO RIVERA
QUICK
MAINTENANCE
RATING
(QMR)
AV
63
!
(59
!
(
E
60
RD
!
(
GR
OV
BR
!
(
Supervisorial District 1
County Unincorporated
M
ES
OR
A
RDO
62
EDU
A
!
(
64
ST
!
(
VE
AV
LY
LE
***
**
***
**
SE
DR
OR
CCTV PROJECT AREA
AL
DR
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.
*****
MAY 2009
Y0TV0607C_ZLAC_QMR.mdx
680
ENCLOSURE 3:
• Quick Structural Rating Report
Priority List
• Quick Structural Rating Map
ENCLOSURE 3
QUICK STRUCTURAL RATING REPORT PRIORITY LIST
UNINCORPORATED LOS ANGELES COUNTY (Y0TV0607C)
as of 06/04/07
Item
No.
1
QSR
Start MH
5300
2076-0037
End MH
Street
2076-0038 OBERGON ST
Observation: Location
Proposed Corrective Method
Broken and multiple fractures with soil visible: 11'
Emergency Project (Point Repair) by SMD
Central Yard: Completed November 2008
Length of
Repair (FT)
ENCLOSURE 3
**
***
CCTV PROJECT
Y0TV0607C
ST
RO
AG
NG
E
61
!
(
GR
E
!
(
R
46
44
1: EXCELLENT
CO
!
(
Y
EY
RL
CA
AV
AL
D
E
AV
A
L
DR
!
(
AV
72
CH
!
U
Other
Manhole Type
!
(
Standard
#
*
DROP
Shallow
W
X
Trap
!
?
Siphon
P
Í
SMD Pump Satations
+
C
SMD Treatment Plants
Trunk Sewerlines
O
***
**
Non SMD Sanitary Sewers
DR
!
(
Trunk Mh
!
(
Non SMD Maintained MH
Parcel Boundary
AV
SMD Operations Maps
ER
FL
AL
D
AV
BE
N
OR
CH
AR
D
SMD Manholes
Maintained by Others:
RA
N
ED
DI
NO
EL
HE
AR
79
70
!
(71
!
(
52
AV
!
(
BE
RN
ST
IL
N
RA
DR
68
51
M
FL
O
!
(
!
(
LO
RE
NE
LO
CK
!
(
VD
!
(
67
*****
AV
RO
DM
RE
CO
AN
AV
LE
AD
E
BL
50
BE
N
!
(
69
66
UP
IE
R
AV
NB
15
XIT
SE
I-60
5
A
!
( NG
RR
IT
T
!
(
ER
ERA
PIO
N
48
!
(
OR
698
UP
W
H
!
(
5: IMMEDIATE ATTENTION
!
(49
RR
***
**
3: FAIR
47
AV
!
(
"
‚
AR
M
!
(45
53
QSR
54
697
510
SMD Sanitary Sewers
CT
!
(
AD
E
37
!
(
ESP
!
(
O
Legend
LE
BRIEL
SAN G
A
!
(
DA
!
(
65
340
Feet
38
AV
!
(
55
170
39
!
(
NZA
A
!
(
0
35
D
V
36
EE
RB
LV
SA
V
BL E
!
(
SA N G
AV
REZ
JUA
NO
43
!
(
ABRIE
L RIV
ER F R
WY
!
(
!
(
!
(
!
(
RIVER
57
C-2076
C-2023
40
IN
G
695
!
(
41
58
F RW Y
!
(
AV
WHITTIER
42
DE
!
(
AL
ST
N
GG
GON
BE
OBR
E
!
(
PICO RIVERA
QUICK
STRUCTURAL
RATING
(QSR)
AV
63
!
(59
!
(
E
60
RD
!
(
GR
OV
BR
!
(
Supervisorial District 1
County Unincorporated
M
ES
OR
A
RDO
62
EDU
A
!
(
64
ST
!
(
VE
AV
LY
LE
***
**
***
**
SE
DR
OR
CCTV PROJECT AREA
AL
DR
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.
*****
MAY 2009
Y0TV0607C_ZLAC_QSR.mdx
680
ENCLOSURE 4:
Infrastructure Inspection Reports
for Grades 4 and 5
WinCan America, Inc.
1730 Montano Road NE, Suite E
Albuquerque, NM 87107
Tel: (505) 341.0109, Fax: (505) 341.0133
Inspection report
Date:
20070603
P.O.#:
Y0TV0607C
Weather:
1 Dry
Surveyed By:
T GLOCK
section number:
1370
PSR:
119833
Total Pipe Length:
179
Survey Customer:
LACDPW
System Owner:
ZLAC
Clean Date:
06/03/2007
Pre-Cleaned:
J Jetting
Map Grid #:
2076
Street:
OBREGON ST
City:
ZLAC
Flow Control:
Year Renewed
Location Code: C Light Highway
Tape/Media #:
Reason for inspection:
F Routine Assessment
Use of Sewer:
SS Sanitary
Drain. Area:
0037/2076-0038/2076
Remark::
1:325
2076-0038
N Not Controlled
0399
Start MH:
2076-0038
End MH:
2076-0037
pipe length:
128.5 ft
Dia/Height:
C 8/8
Material:
VCP Pipe Length:
Lining Method:
Category:
3ft
Broken pipe
position
observation
MPEG
photo
grade
0.00
Upstream Manhole, Survey Begins
00:01:26
0.00
Water Level, 2 % of cross sectional area
00:01:42
346
M2
4.90
Crack Multiple, from 07 to 05 o´clock, within 8 inch: YES
00:02:18
347
S3
12.90
Crack Multiple, from 08 to 04 o´clock, within 8 inch: YES
00:02:28
348
S3
22.10
Crack Multiple, from 08 to 12 o´clock, within 8 inch: YES
00:03:09
350
S3
23.40
Tap Factory Made Active, at 02 o´clock, 6", within 8 inch: YES
00:03:22
349
24.70
Crack Multiple, from 02 to 05 o´clock, within 8 inch: YES
00:03:44
351
S3
Crack Multiple, from 08 to 04 o´clock, within 8 inch: YES, start
00:04:00
352
S3
70.80
Water Level, Sag in pipe, 20 % of cross sectional area
00:07:38
355
M2
70.80
Water Level, 10 % of cross sectional area
00:07:48
356
M2
77.90
Tap Factory Made Active, at 03 o´clock, 6", within 8 inch: YES
00:05:42
353
85.20
Roots Fine Joint, from 08 to 04 o´clock, within 8 inch: YES
00:06:14
354
103.20
Water Level, 20 % of cross sectional area
00:09:27
357
121.30
Roots Fine Joint, from 08 to 04 o´clock, within 8 inch: YES
00:10:17
358
27.80
S1
M2
125.50
S2
Fracture Multiple, from 08 to 12 o´clock, within 8 inch: YES, start
00:10:44
359
S4
128.00
S3
Hole Soil Visible, from 07 to 11 o´clock, within 8 inch: YES, start
00:11:30
360
S5
Roots Medium Barrell, from 09 to 11 o´clock, 5 %, within 8 inch: YES
00:11:43
361
M4
128.00
128.40
F1
Crack Multiple, from 08 to 04 o´clock, within 8 inch: YES, end
00:12:27
S3
128.40
F2
Fracture Multiple, from 08 to 12 o´clock, within 8 inch: YES, end
00:12:31
S4
128.40
F3
Hole Soil Visible, from 08 to 11 o´clock, within 8 inch: YES, end
00:12:34
S5
Survey Abandoned, Remark: camera blocked broken pipe
00:13:03
128.50
362
QSR
QMR
SPR
MPR
OPR
SPRI
MPRI
OPRI
5242
4124
90
12
102
3.21
2.4
3.09
Y0TV0607C_DB97 4-20-09.mdb // page: 1
WinCan America, Inc.
1730 Montano Road NE, Suite E
Albuquerque, NM 87107
Tel: (505) 341.0109, Fax: (505) 341.0133
Inspection report
Date:
20070530
P.O.#:
YOTV0607-C
Weather:
1 Dry
Surveyed By:
T. Glock
section number:
1397
PSR:
119833
Total Pipe Length:
179
Survey Customer:
LACOPW
System Owner:
PRV
Clean Date:
05/30/2007
Pre-Cleaned:
H Heavy Cleaning
Map Grid #:
2076
Street:
OBERGON ST
City:
ZLAC
Flow Control:
N Not Controlled
Year Renewed
Location Code: C Light Highway
Tape/Media #:
Reason for inspection:
F Routine Assessment
Use of Sewer:
SS Sanitary
Drain. Area:
0038/2076-0037/2076
Remark::
0399
Start MH:
2076-0037
End MH:
2076-0038
pipe length:
11.1 ft
Dia/Height:
C Circular 8"/8"
Material:
VCP Pipe Length:
Lining Method:
Category:
PSR#119833
Cckede broken pipe
1:50
2076-0037
position
MPEG
photo
grade
0.00
Downstream Manhole, Survey Begins
00:01:12
0.00
Water Level, 25 of cross sectional area
00:01:39
637
M2
9.00
Hole Soil Visible, from 01 to 05 o´clock, within 8 inch: YES, Remark: Roots
00:02:31
638
S5
S1
Broken Soil Visible, from 08 to 05 o´clock, within 8 inch: YES, start
00:02:51
639
S5
00:03:25
640
M3
F1
Roots Tap Barrell, from 03 to 05 o´clock, 15 %, within 8 inch: YES,
Remark: large tap root
Broken Soil Visible, from 08 to 04 o´clock, within 8 inch: YES, end
10.40
2076-0038
observation
11.10
11.10
S5
QSR
QMR
SPR
MPR
OPR
SPRI
MPRI
OPRI
5300
3121
15
5
20
5
2.5
4
Y0TV0607C_DB97 4-20-09.mdb // page: 1
ENCLOSURE 5:
CCTV Sewer Inspection
Project Schedule
Unincorporated Central Yard
FISCAL
YEAR
2005-2006
PROJECT
NAME
Y0TV0506A
2006-2007
Y0TV0607C
9,475
0.5
COMPLETE
2007-2008
Y0TV0708B
253,485
14.7
COMPLETE
2008-2009
Y0TV0809B
5,167
0.3
IN PROGRESS
2009-2010
Y0TV0910B
227,947
13.2
2010-2011
288,236
16.7
2011-2012
304,024
17.6
2011-2012
149,936
8.7
2012-2013
190,537
11.1
2012-2013
16,239
1.0
2014-2015
61,341
3.6
2014-2015
183,459
10.6
1,724,116
100.0
TOTAL
LENGTH
(FT)
34,270
CCTV PROJECT SCHEDULE
PERCENTAGE
OF SYSTEM
2.0
REPORT STATUS
IN PROGRESS