Sanitation Districts of Los Angeles Countyt4 Spatial
Wastewater/Activity/PacpInspection/1.0Apr 19, 2017, 08:12 AM
  • 21 0733_21 0732 _20170419_020548.mp4

Date
04/19/2017
W/O
630300
Weather
Dry
Operator/Surveyor
JUAN B
Sewer ID
Z00768
PipeID
P15845
Time
1:12 AM
Certificate
U-715-07000770
System Owner
LACSD
Date Cleaned
Pre-Cleaning
No Pre-Cleaning
Media Label
4507
Sewer Name
21 FIRST STREET DIVERSION TRUNK
City
POMONA
Loc. details
Main Highway - Urban
Location Code
A
Use of Sewer
Sanitary Sewer
District
District 21
Page No.
16
Purpose
Routine Assessment
Project
WO_630300_TV21070_APR2017
Material
Vitrified Clay Pipe
Shape
Circular
Height
12 in.
Width
12 in.
Upstream MH
21 0733
Downstream MH
21 0732
Dir. of Survey
Downstream
Length Surveyed
378.5 ft.
Total Length
378.5 ft.
Structural Index
2
Structural Quick
2100
Structural Rating
2
O&M Index
2
O&M Quick
2200
O&M Rating
4
Overall Index
2
Overall Quick
Overall Rating
6
Pipe schematic from manhole 21 0733 to 21 0732
MH: 21 0733MH: 21 0732downstream0 ft. MWL - Water Level, 10 %of cross sectional area0 ft. AMH - Upstream Manhole, Survey Begins - 21 07330 ft. MWM - Water Mark, 40 %of cross sectional area2.8 ft. DAR - Deposits Attached Ragging, 5 %of cross sectional area, from 03 to 09 o'clock, , within 8 inches of joint: YES, Start177.2 ft. DAE - Deposits Attached Encrustation, 5 %of cross sectional area, from 09 to 03 o'clock, , within 8 inches of joint: YES, Start178.9 ft. MWLS - Water Level, Sag in pipe, 30 %of cross sectional area, Start194.7 ft. MWLS - Water Level, Sag in pipe, 30 %of cross sectional area, Finish194.7 ft. DAE - Deposits Attached Encrustation, 5 %of cross sectional area, from 09 to 03 o'clock, , within 8 inches of joint: YES, Finish378.5 ft. DAR - Deposits Attached Ragging, 5 %of cross sectional area, from 03 to 09 o'clock, , within 8 inches of joint: YES, Finish378.5 ft. AMH - Downstream Manhole, Survey Ends - 21 0732

Observation photos (2)

  • Deposits Attached Ragging, 5 %of cross sectional area, from 03 to 09 o'clock,  , within 8 inches of joint: YES, Start

    2.8 ft. - Deposits Attached Ragging, 5 %of cross sectional area, from 03 to 09 o'clock, , within 8 inches of joint: YES, Start

  • Deposits Attached Encrustation, 5 %of cross sectional area, from 09 to 03 o'clock,  , within 8 inches of joint: YES, Start

    177.2 ft. - Deposits Attached Encrustation, 5 %of cross sectional area, from 09 to 03 o'clock, , within 8 inches of joint: YES, Start

Observations (10)

DistanceCodeObservation
2.8DAR
194.7MWLS
378.5DAR
177.2DAE
194.7DAE
0MWL
178.9MWLS
378.5AMH21 0732
0AMH21 0733
0MWM

Properties (5)

additional_info
SC340721
custom_field_two
4
customer
LACSD
datetime
2017-04-19T01:12:27-07:00
sewer_category
Gravity