HomeMy WebLinkAbout09.a. Receive CSO 2018 Sanitary Sewer Overflow Annual Report Page 1 of 16
Item 9.a.
,ek CENTRAL SAN
SANITARYCENTRAL CONTRA COSTA , .
February 21, 2019
TO: HONORABLE BOARD OF DIRECTORS
FROM: PAUL SEITZ, COLLECTION SYSTEM OPERATIONS DIVISION MANAGER
REVIEWED BY: ANN SASAKI, DEPUTY GENERAL MANAGER
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE COLLECTION SYSTEM OPERATIONS 2018 SANITARYSEWER
OVERFLOW (SSO)ANNUAL REPORT
Attached is the 2018 Sanitary Sewer Overflow Annual Report.
Strategic Plan re-In
GOAL ONE: Provide Exceptional Customer Service
Strategy 1 - Build external customer relationships and awareness, Strategy 3- Maintain a strong reputation in the
community
GOAL TWO: Strive to Meet Regulatory Requirements
Strategy 2- Strive to minimize the number of sanitary sewer overflows, Strategy 3- Comply with all federal, state, and
local regulations related to District administration
GOAL FOUR: Develop and retain a highly trained and innovative workforce
Strategy 1 - Ensure adequate staffing and training to meet current and future operational levels
GOAL FIVE: Maintain a Reliable Infrastructure
Strategy 1 - Manage assets optimally throughout their lifecycle
ATTACHMENTS:
1. CSO 2018 SSO Annual Report
February 21, 2019 Regular Board Meeting Agenda Packet- Page 50 of 111
ANNUAL REPORT OF SANITARY
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SEWER OVERFLOWS
Paul A. Seitz
Division Manager
Collection System Operations Division
February 21 , 2019
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February 21, 10r.Board M -
2018 SANITARY SEWER OVERFLOWS
28 Ove rf I ows
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1 .85 per 100 Miles
No Capacity Overflows
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COMPARATIVE DATA FOR 2018
FROM STATE DATABASE
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Number of 2870 801 28
Ove rf I ows
Total Volume 17,812,762 11044,807 51869
(Gallons)
Overflows per
3.89 5.32 1.85
100 Miles
Average Volume 61207 11304 210
per SSO (Gallons)
* Information from CIWQS Public Spill Report — Summary Page on 1/15/19
�:.`February'21, 2019 Regular Board Meeting Age - Pnrip r,'l r%f 111 ,04
OVERFLOWS COMPARISON
1999 =2018
NUMBER OF OVERFLOWS
180 -
162
160 143 141
140 1 135
113
120 107
100 86
81
$0 ` 73
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60 43 49 48 49 43 0
4028
37 4 38
20
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2411 2012 2013 2014 2015 2016 2017 2018
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OVERFLOW QUANTITIES
101r,-7- ---q PillSize of • (Gallons) Number in 2017 Number in 2018
Greater Than or 4 1
Equal to 1,000
Between 100 and 999 10 7
Between 10 and 99 18 17
Less Than 10 6 3
Total Overflow Volume 330,226 gallons* 5,869 gallons
* The SSO on Miner Road (243,100 gallons) and Reliez Valley Road (79,045
gallons) attributed 97.6% of the total overflow volume in 2017
::.`February�1, 2019 Regular Board Meeting Age -
2018 OVERFLOWS
BY CITY
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Alamo Danville Lafayette Martinez Orinda Pleasant Hill San Ramon Walnut Creek
CITY
2018 OCAUSES
Physical Defect,
7%
Roots, 57%
Other Plug, 29%
Grease, 7%
:.`February'21, 201 e�lar ba eeting Age -
2018 OVERFLOWS
BY PIPE SIZE AND TYPE
2018 OVERFLOWS BY
PIPE SIZE AND TYPE
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ABS ,SGP CIP CIPP ❑IP HDPE VARIOUS VCP
PIPE SIZE
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CATEGORY 1 OVERFLOWS
ANY VOLUME OF WASTEWATER THAT REACHES THE WATERS OF THE STATE
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2013 2014 2015 2016 2017 2018
YEAR
•
Cleaned 797 miles of scheduled and routine sewers . 20,738 work orders were completed
on schedule 98% of the time
576 of the 797 miles (72%) were attributed to a 1, 2, 3, 6 and 12 month schedules
176 of the 797 miles (22%) were attributed to Hotspots — 1, 2, and 3 month schedules
CCTV'd 179 miles of sewers.
Completed 65 spot repairs and 128 structure adjustments.
Received and cleared over 27,700 USA requests on time.
Completed 1004 services on vehicles and equipment. DOT regulated services were
completed on schedule 100% of the time. Up time for vehicles was greater than 95%.
• •
or
Conducted survey of 100% of all customers' emergency calls.
185 Customer Surveys were sent to ratepayers. 53 surveys were
submitted for a return rate of 29%.
Average Customer Service rating was 3.97 out of 4.0.
Received a rating of 4.0 for 11 months of the year.
Average response time was 32.5 minutes.
• a A • •
28 overflows. First time CentralSan has been under 30 overflows for the
year
1.85 overflows per 100 miles. First time CentralSan has been under 2.00
overflows per 100 miles
Awarded Large Collection System of the Year for the San Francisco Bay
Section by CWEA
Completed 2-year audit of SSMP
Started converting Routine work orders to Scheduled. All work orders
going forward have a scheduled date for maintenance
STRATEGIC PLAN METRICS
GOAL 1 - CUSTOMER SERVICE
Response time Less than 20 32 minutes
during working minutes
hours
Response time Less than 40 33 minutes
after hours minutes
Average Customer Greater than 3.8 3.97
Service Rating out of 4
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:.`February�1, 2019 Regular Board Meeting Ag - Pqnp Q1 nf 111
STRATEGIC PLAN METRICS
COAL 2 - MEET REGULATORY
REQUIREMENTS
Metric Ta rg rt - Actual (CY , .
SSO's / 100 miles 2.5 per 100 miles 1.85 per 100 miles
Spills to Public Waters Less than 3 3
of Spill less than 500 Greater than 95% 89.3% (3 overflows > 500
gallons gallons)
Cleaning schedules Greater than 95% 98.31%
completed on time
Cleaning QA/QC 3% of pipelines cleaned 3.26%
QA/QC Pass Rate Greater than 98% 91.80%
:.`February�1, 2019 Regular Board Meeting Age - 14
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Questions ?.
�::.`February'21, 201 eglar oa eeting Ag - Pqnp RS nf 111