HomeMy WebLinkAbout09.a. Receive Collection System Operations 2023 Annual Report of Sanitary Sewer OverflowsItem 9.a.
F ebruary 22, 2024
T O: HO NO R A B L E B O A R D O F D I R E C TO R S
F RO M :PA UL S E I T Z , C O L L E C T I O N S YS T E M O P E R AT I O NS D I V I S I O N MA NA G E R
RE V IE WE D B Y:G R E G NO R B Y, D E P UT Y G E NE R A L MA NA G E R - O P E R AT I O NS
R O G E R S. B A I L E Y, G E NE R A L MA NA G E R
S UB J E C T: R E C E I V E C O L L E C T I O N S YS T E M O P E R AT I O NS 2023 A NNUA L R E P O RT
O F S A NI TA RY S E W E R O V E R F L O W S
Staf f will present the attached 2023 A nnual R eport of Sanitary S ewer Overf lows (S S O) at the meeting.
Strategic Plan Tie-I n
G O A L O N E: Customer and C ommunity
Strategy 1 – Deliver high-quality customer service
AT TAC HM E NT S :
D escription
1. 2023 S S O Annual Report
February 22, 2024 Special Board Meeting Agenda Packet - Page 58 of 128
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ANNUAL REPORT
OF SANITARY
SEWER
OVERFLOWS
(SPILLS)
Paul A. Seitz
Collection System Operations Division Manager
February 22, 2024
2023 Sanitary Sewer
Spills
13 Spills
.84 Spills per 100 miles
No Capacity Spills
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ATTACHMENT 1
February 22, 2024 Special Board Meeting Agenda Packet - Page 59 of 128
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Comparative Data for 2023 from
State Database
Central SanREGION 2*STATEWIDE*
135491,860Number of Spills
4,04316,868,03667,420,590TotalVolume
(Gallons)
.843.492.52Spills per
100 Miles
31130,75236,248Average Volume per
Spill (Gallons)
* Information from California Integrated Water Quality System (CIWQS) Public Spill Report –
Summary Page on January 19,2024
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Spills Comparison
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February 22, 2024 Special Board Meeting Agenda Packet - Page 60 of 128
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Spill Quantities
Number in 2023Number in 2022Size of Spill (Gallons)
16Greater Than or
Equal to 1,000
47Between 100 and 999
78Between 10 and 99
12Less Than 10
4,043 gallons50,605 gallonsTotal OverflowVolume
5
Category 1 Spills
(any volume of wastewater that reaches the Waters of the State)
6
4
2
3
1
0
1
2
3
4
5
6
7
2019 2020 2021 2022 2023
Nu
m
b
e
r
o
f
S
p
i
l
l
s
YEAR
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February 22, 2024 Special Board Meeting Agenda Packet - Page 61 of 128
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2023 Spill Causes
Roots, 62%Grease, 15%
Other Plug, 15%Physical Defect, 8%
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2023 Spills by City
1
2
3
1 1
5
0
2
4
6
Danville Lafayette Orinda Pleasant Hill San Ramon Walnut
Creek
N
U
M
B
E
R
O
F
S
P
I
L
L
S
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February 22, 2024 Special Board Meeting Agenda Packet - Page 62 of 128
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Collection System Operations (CSO) Highlights
Cleaned 748 miles of scheduled and routine sewers. 16,906 work orders
were completed on schedule, 99.6% of the time.
Closed-circuit televised (CCTV’d) 191 miles of sewers.
Completed 55 spot repairs and 192 structure adjustments.
Received and cleared over 29,628 Underground Service Alert (USA) requests
on time.
Completed 894 services on vehicles and equipment. Department of
Transportation (DOT) regulated services were completed on schedule, 100%
of the time. Uptime for vehicles was 100%.
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CSO Customer Service
Conducted survey of 100% of all customers’
emergency calls.
183 Customer Surveys were sent to ratepayers. 38
surveys were submitted for a return rate of 21%.
Average Customer Service rating was 3.95 out of 4.0.
Received a rating of 4.0 for 9 months of the year.
Average response time was 30.49 minutes.
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February 22, 2024 Special Board Meeting Agenda Packet - Page 63 of 128
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Thank you…
•CSO Staff
•Board of Directors
•Roger S. Bailey – General Manager
•Greg Norby – Deputy General Manager, Operations
•Engineering Department
•Administration Department
•Operations Department
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Questions?
12
February 22, 2024 Special Board Meeting Agenda Packet - Page 64 of 128
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