HomeMy WebLinkAbout10/19/2011 - STAFF REPORTS - 2.H. iy
c
A.
V N
a +
s`
c'941FORN�P City Council Staff Report
Date: October 19, 2011 CONSENT CALENDAR
Subject: CITY OF PALM SPRINGS SANITARY SEWER SYSTEM MANAGEMENT
PLAN BIENNIAL PROGRAM AUDIT
From: David H. Ready, City Manager
Initiated by: Public Works and Engineering Department
SUMMARY
On May 2, 2006, the California State Water Resources Control Board adopted Order
No. 2006-0003-DWQ implementing state wide regulations related to the operation and
maintenance of sanitary sewer systems. On July 15, 2009, the City Council adopted
the City of Palm Springs Sanitary Sewer System Management Plan ("SSMP") to comply
with the state's Order. The SSMP requires the City to report the efforts of its SSMP
every two years. This is the City's first audit report for the SSMP.
RECOMMENDATION:
Receive and file the 2011 Sewer System Management Plan ("SSMP") Program Audit.
STAFF ANALYSIS:
On May 2, 2006, the California State Water Resources Control Board ("State Board")
adopted Order No. 2006-0003-DWQ ("the Order") implementing state wide regulations
related to the operation and maintenance of sanitary sewer systems. The State Board
was created by the Legislature in 1967. The joint authority of water allocation and water
quality protection enables the State Board to provide comprehensive protection for
California's waters. The State Board oversees and administers regulations related to
groundwater, storm water, wastewater, water recycling, and other related issues.
In April 2004, the State Board began to investigate potential solutions to reduce both the
numbers and volume of Sanitary Sewer Overflows ("SSOs") that occur throughout the
state, often impacting human health and the environment. The most noticeable impact
of SSOs is the closure of public beaches due to sewage spills. With the aging of the
sanitary sewer systems within the state, and varying levels of effort and funding to
manage those sanitary sewer systems, the State Board believed the frequency of SSOs
ITEM NO.
City Council Staff Report
October 19, 2011 - Page 2
2011 SSMP Program Audit
would increase unless the State Board took formal action to implement regulations
regarding SSOs state wide.
The state is divided into nine regions administered by Regional Boards who receive
general administration and regulations from the Board. The Coachella Valley is located
in the Colorado River Basin Region, and is locally regulated by that Regional Board.
The State Board found that some of the Regional Boards had enacted region-wide
regulations regarding SSOs, while some regions lacked any oversight. The Colorado
River Basin Region was one region that had not yet reacted to the issue of SSOs on
water quality. Therefore, the State Board took the initiative to develop and enact state
wide regulations to prevent the occurrence of SSOs. These regulations apply to all
Federal and state agencies, municipalities, counties, districts, and other public entities
that own or operate sanitary sewer systems greater than one mile in length that collect
and/or convey untreated or partially treated wastewater to a publicly owned treatment
facility in the State of California.
The State Board found that major causes of SSOs include: grease blockages, root
blockages, sewer line flood damage, manhole structure failures, vandalism, pump
station mechanical failures, power outages, excessive storm or ground water
inflow/infiltration, debris blockages, sanitary sewer system age and construction
material failures, lack of proper operation and maintenance, insufficient capacity and
contractor-caused damages. Many SSOs are preventable with adequate and
appropriate facilities, source control measures and operation and maintenance of the
sanitary sewer system.
As a result, the State Board determined that to facilitate proper funding and
management of sanitary sewer systems, each system operator must develop and
implement a system-specific Sewer System Management Plan ("SSMP"). The City's
SSMP was adopted by the City Council on July 15, 2009. To be effective, SSMPs must
include provisions to provide proper and efficient management, operation, and
maintenance of sanitary sewer systems, while taking into consideration risk
management and cost benefit analysis. Additionally, an SSMP must contain a spill
response plan that establishes standard procedures for immediate response to an SSO
in a manner designed to minimize water quality impacts and potential nuisance
conditions.
The City's sanitary sewer system is composed of approximately 250 miles of clay,
gravity flow, 6"-42" diameter collection lines, approximately 5,000 pre-cast concrete and
brick manholes; and five sewer lift stations. Therefore, the Order adopted by the State
Board applies directly to the City's sanitary sewer collection system. Given that the
City's sanitary sewer collection system is operated and maintained by Veolia Water
North America — West, LLC ("Veolia") under a long-term contract, City staff coordinated
with Veolia to ensure the City complied with the Order, and that the City's SSMP has
been implemented in accordance with the regulations.
02
City Council Staff Report
October 19, 2011 - Page 3
2011 SSMP Program Audit
Veolia has prepared the first biennial SSMP Program Audit, identifying one SSO during
the audit period.
FISCAL IMPACT:
None.
SUBMITTED:
Prepared by: Recommended by:
Marcus L. Fuller David J. Barakian
Assistant Director of Public Works Director of Public Works/City Engineer
Approved by:
Thomas J. Wils , Asst. City Manager David H. Ready, City ger
Attachments:
1. 2011 SSMP Program Audit
03
QVEOLIA
WATER
Date: April 1, 2011
To: Marcus Fuller, Jack Martin
From: Bob Okren
Subject: Sewer System Management Plan (SSMP)Program Audit
The State Water Resources Control Board (Board) oversees the water quality in the waters of the State of
California, including the Colorado River Basin (Board Region 7) where the City of Palm Springs (City) is
located.
During May 2006, the Board ordered (Order No. 2006-0003) Statewide General Waste Discharge Requirements
(WDR)For Sanitary Sewer Systems.
Per the WDR and to facilitate proper funding and management of sanitary sewer systems, each system operator
must develop and implement a system-specific Sewer System Management Plan (SSMP). To be effective,
SSMPs must include provisions to provide proper and efficient management, operation, and maintenance of
sanitary sewer systems, while taking into consideration risk management and cost benefit analysis.
Additionally, an SSMP must contain a spill response plan that establishes standard procedures for immediate
response to an SSO in a manner designed to minimize water quality impacts and potential nuisance conditions.
Also Per WDR Section D. PROVISIONS, Item 13 (x),the SSMP must include the element listed below:
• Conduct periodic internal audits, appropriate to the size of the system and the number of SSOs. At a
minimum, these audits must occur every two years and a report must be prepared and kept on file. This
audit shall focus on evaluating the effectiveness of the SSMP and the City's compliance with the SSMP
requirements.
The City and its Operations and Maintenance Contractor,Veolia Water NA have conducted an internal audit
focusing on the effectiveness of the SSMP and the City's compliance with the SSMP requirements.
Per WDR Section D. PROVISIONS, Item 13 (i), the goal of the SSMP is to provide a plan and schedule to
properly manage, operate, and maintain all parts of the sanitary sewer system. This goal will help reduce and
prevent SSOs, as well as mitigate any SSOs that do occur. The City has developed the following goals for the
operation and maintenance of its sanitary sewer system and the effectiveness of the SSMP and the City's
compliance with the SSMP requirements has been measured against the these goals and the specific targets
established at the inception of the City's SSMO.
• Minimize SSOs;
• Prevent public health hazards;
• Minimize inconveniences by responsibly handling interruptions in services;
Veolia Water North America
Palm Springs Project
4375 Mesquite Avenue,.Palm Springs,CA 92264
Tel 760.323-6166/Fax 760-325-5747 04
2
• Protect the large investment in collection system assets by maintaining adequate capacities and
extending useful life;
• Prevent unnecessary damage to public and private property;
• Use available funds in the most efficient manner;
• Convey wastewater with a minimum of infiltration, inflow and exfiltration;
• Ensure adequate capacity to convey peak flows; and
• Perform all operations in a safe manner to avoid personal injury and property damage.
Minimize SSOs
Since April 2009,the City has experienced one (1) SSO and for its overall Operation and System Maintenance
efforts the City was awarded the Collection System of the Year award (2009)by the California Water
Environment Association(CWEA) and it Colorado River Basin Section.
Prevent Public Health Hazards
Also during the April 2009—April 2011 period, the City has conducted the following Maintenance activities:
• Conducted Closed Circuit Television(CCTV) Inspections within approximately 489, 217 feet of the
sanitary sewer system.
• Conducted Cleaning, Vacuuming and Root and Debris removal within approximately 2,274,662 feet of
the sanitary sewer system.
• Conducted and recorded approximately 72 complete manhole inspections.
Minimize Inconveniences By Responsibly Handling Interruptions In Service
During the April 2009—April 2011 period,the City responded to and resolved approximately 635 calls for
service at the wastewater treatment plant, the City's lift stations and within the general community.
Protect The Large Investment In Collection System Assets By Maintaining Adequate Capacities And Extending
Useful Life
For purposes of system evaluation and capacity assurance planning, the City has prepared and implemented a
Sanitary Sewer Master Plan(MP) that provides hydraulic capacity of key sewer system segments for peak flow
conditions.
The MP was completed during November 2008 and the following benefits are realized by preparing this
comprehensive, long term MP:
• Defines both current and long term needs of the City Sanitary Sewer System;
• Provides general description of the collection system as well as documents flow routing for use in the
operation and planning of new pipelines,thus reducing the time needed to train new employees;
• Provides guidelines for scheduling workloads, staffing plans and justifications for City staffing;
• Provides information for making sound decisions on collection system operations, financing, staffing,
and building permitting;
• Provides the basis for financial planning so that resources are available when needed;
05
3
• Reduces the cost of planning, design, and construction; and
• Allows proactive management of the wastewater collection facilities rather than reactive management.
The finding of this MP are based on the hydraulic and observed conditions of the City's existing collection
system. As development increases within the City, several pipelines will need to be replaced, relieved,
rehabilitated,or modified to provide sufficient capacity in the system for the increased flows.
Prevent Unnecessary Damage To Public And Private Property
Since the implementation of the SSMP,there have been no unnecessary damages to public or private property.
Use Available Funds In The Most Efficient Manner
Since the implementation of the SSMP Collection System Operation and Maintenance funds have supported the
utilization of a fully integrated Decision Support System(DSS)that incorporates all of the tools and processes
that are required to run a proactive management system in a single easy to use package. All information about
the collection system is brought together within the DSS. This includes:
• Physical asset characteristics;
• Geography and mapping;
• Hydraulic characteristics;
• Routine maintenance data;
• Inspection information; and
• Accompanying imagery.
The DSS is built on a multi-user architecture, allowing users to log in from remote locations (i.e. inspection and
cleaning vehicles) so that information is shared and everyone is on the same page. The DSS is used by the
collection system operators to plan, schedule, monitor and report all collection system inspection and cleaning
activities for its CCTV inspection vehicle and its two cleaning vehicles.
Convey Wastewater With A Minimum Of Infiltration, Inflow and Exfiltration
Since the implementation of the SSMP, the City has conveyed wastewater with a minimum of infiltration,
inflow and exfiltration by way of its inspection, cleaning and system repair programs.
Ensure Adequate Capacity To Convey Peak Flows
Per the City's MP, sanitary sewer improvement projects have been developed to solve the identified
deficiencies. The order of the proposed projects has been prioritized to relieve that portion of the public
sewerage system with the most severe deficiencies first. The recommended Capital Improvement Plan combines
these projects into a phased Capital Improvements Program for the period until year 2025.
The Indian Canyon Drive Upsize Project is the first recommended project. The 8, 10 and 12 inch
lines are projected to flow at least 67%full at build out conditions. Most of the pipe lines are
expected to surcharge at build out conditions. Since there are no adequate sewer lines to divert flow
to in the area, upsizing is recommended.
06
4
The Palm Canyon Drive Upsize Project is the second recommended project. The 10 inch line is
experiencing at least 41%depth of flow at Year 2025 flow conditions. One line is projected to
experience surcharging flows at build out conditions. Since there are no adequate sewer lines to
divert to in the area, upsizing is recommended.
The Indian Avenue Upsize Project involves 10, 12 and 15 inch lines completely surcharging at Year
2015 and build out conditions, due to the connection to the Parcel 4, PM 21921 development. Since
there are no adequate lines to divert flow to in the area, and there is no other connection point with
capacity for the development to connect to the sewer system, upsizing the lines on Indian Avenue is
recommended. It should be noted that this project is optional since it is still to be decided whether
the Parcel 4, PM 21921 development will actually connect to the City's sewer system.
Another optional project is the Farrell Drive Upsize Project. The 24 inch line is experiencing at least
83% depth of flow at Year 2025 flow conditions. One line is projected to experience surcharging
flows at build out conditions. Since there is no adequate diversion to sewer lines in the area,
upsizing is recommended. This necessity of this project is also dependent on whether the Parcel 4,
PM 21921 development will actually connect to the City's sewer system.
The final optional project is the Vista Chino Upsize Project. The 18 and 21 inch segments are
flowing at least 78% full and two segments are projected to surcharge. This necessity of this project
is also dependent on whether the Parcel 4, PM 21921 development will actually connect to the City's
sewer system.
A prioritized order of construction has been developed assuming the year 2025 conditions increase
linearly to identify the most cost-effective plan for the overall public sewerage system.
The recommended Capital Improvement Plan provided for approximately 19,782 linear feet of new
sanitary sewers to be constructed over the next 17 years. The total capital outlay for the plan is
estimated at approximately$17.0 million. The phasing of the plan has been designed to address the
most critical needs first and to provide preliminary budgets for construction over an extended period.
Perform All Operations In A Safe Manner To Avoid Personal Injury And Property Damage
With the exception of one personal, recordable back strain injury sustained by an employee while he was
removing a cover from a grease interceptor, all operations have been performed in a safe manner.
07