LAFCO
Southern Marin Wastewater Municipal Service Review and Sphere of Influence Update - December 2023
Read the report at Local Agency Formation Commissions ↗
Marin Local Agency Formation Commission
Municipal Service Review
Southern Marin Wastewater Study
ADOPTED
September 2023
Marin LAFCo Southern Marin Wastewater Study
September 2023
PREFACE
This Municipal Services Review (MSR) documents and analyzes wastewater services provided
by local governmental agencies in the Southern Marin region. Specifically, it evaluates the
adequacy and efficiency of local government structure and boundaries within the region and
provides a basis for boundary planning decisions by the Marin Local Agency Formation
Commission (LAFCo).
Context
Marin LAFCo is required to prepare this MSR in accordance with the Cortese-Knox-Hertzberg
Local Government Reorganization Act of 2000 (Government Code §56000, et seq.), which took
effect on January 1, 2001. The MSR reviews services provided by public agencies—cities and
special districts—whose boundaries and governance are subject to LAFCo. The analysis and
recommendations included herein serve to promote and coordinate the efficient delivery of local
government services and encourage the preservation of open space and agricultural lands.
Commissioners, Staff, Municipal Services Review Preparers
Commissioners
Barbara Coler- Chair City Town of Fairfax
Dennis Rodoni -Vice Chair County District 4 Supervisor
Eric Lucan County District 5 Supervisor
Lew Kious Special District Almonte Sanitary District
Larry Chu Public Commission
Craig Murray Special District Las Gallinas Valley Sanitary District
Steve Burdo City Town of San Anselmo
Roger Smith Public Alternate Commission
Cathryn Hilliard Special District Alternate Southern Marin Fire Protection District
Stephen Burke City Alternate City of Mill Valley
Stephanie Moulton-Peters County Alternate District 3 Supervisor
Staff
Jason Fried Executive Director
Jeren Seibel Deputy Executive Officer
Claire Devereux Clerk/Jr. Analyst
MSR Preparers
Jeren Seibel, Deputy Executive Officer
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Table of Contents
1.0 INTRODUCTION .........................................................................................................................5
1.1 ROLE AND RESPONSIBILITY OF LAFCO .................................................................................................5
1.2 MUNICIPAL SERVICE REVIEWS ...........................................................................................................6
1.3 MARIN LAFCO COMPOSITION ..........................................................................................................7
2.0 EXECUTIVE SUMMARY ...............................................................................................................8
2.1 AFFECTED PUBLIC AGENCIES .............................................................................................................8
2.2 PLANS, POLICIES, STUDIES ...............................................................................................................8
2.3 AGENCY AND PUBLIC PARTICIPATION ..................................................................................................9
2.4 WRITTEN DETERMINATIONS .............................................................................................................9
3.0 DETERMINATIONS ................................................................................................................... 12
4.0 REGIONAL SETTING .................................................................................................................. 17
4.1 UNINCORPORATED ISLANDS ........................................................................................................... 18
5.0 SEWERAGE AGENCY OF SOUTHERN MARIN .............................................................................. 20
5.1 OVERVIEW .............................................................................................................................. 20
5.2 FORMATION AND DEVELOPMENT..................................................................................................... 20
5.3 SERVICE AREA ............................................................................................................................. 23
5.4 GROWTH AND POPULATION ........................................................................................................... 24
5.5 MUNICIPAL SERVICES .................................................................................................................... 24
5.6 ORGANIZATION STRUCTURE ........................................................................................................... 25
5.7 ACCOUNTABILITY AND TRANSPARENCY .............................................................................................. 26
5.8 FINANCIAL OVERVIEW ................................................................................................................... 27
6.0 ALMONTE SANITARY DISTRICT ................................................................................................. 29
6.1 OVERVIEW ................................................................................................................................. 29
6.2 FORMATION AND DEVELOPMENT..................................................................................................... 29
6.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE ................................................................................. 30
6.4 GROWTH AND POPULATION ........................................................................................................... 31
6.5 MUNICIPAL SERVICES .................................................................................................................... 31
6.6 ORGANIZATION STRUCTURE ........................................................................................................... 32
6.7 ACCOUNTABILITY AND TRANSPARENCY .............................................................................................. 33
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6.8 FINANCIAL OVERVIEW ................................................................................................................... 33
7.0 ALTO SANITARY DISTRICT ........................................................................................................ 36
7.1 OVERVIEW ................................................................................................................................. 36
7.2 FORMATION AND DEVELOPMENT..................................................................................................... 36
7.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE ................................................................................. 37
7.4 GROWTH AND POPULATION ........................................................................................................... 38
7.5 MUNICIPAL SERVICES .................................................................................................................... 39
7.6 ORGANIZATION STRUCTURE ........................................................................................................... 40
7.7 ACCOUNTABILITY AND TRANSPARENCY .............................................................................................. 41
7.8 FINANCIAL OVERVIEW ................................................................................................................... 41
8.0 HOMESTEAD VALLEY SANITARY DISTRICT ................................................................................. 43
8.1 OVERVIEW ................................................................................................................................. 43
8.2 FORMATION AND DEVELOPMENT..................................................................................................... 43
8.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE ................................................................................. 45
8.4 GROWTH AND POPULATION ........................................................................................................... 45
8.5 MUNICIPAL SERVICES .................................................................................................................... 46
8.6 ORGANIZATION STRUCTURE ........................................................................................................... 47
8.7 ACCOUNTABILITY AND TRANSPARENCY .............................................................................................. 47
8.8 FINANCIAL OVERVIEW ................................................................................................................... 48
9.0 RICHARDSON BAY SANITARY DISTRICT ..................................................................................... 50
9.1 OVERVIEW ................................................................................................................................. 50
9.2 FORMATION AND DEVELOPMENT..................................................................................................... 50
9.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE ................................................................................. 51
9.4 GROWTH AND POPULATION ........................................................................................................... 52
9.5 MUNICIPAL SERVICES .................................................................................................................... 52
9.6 ORGANIZATION STRUCTURE ........................................................................................................... 53
9.7 ACCOUNTABILITY AND TRANSPARENCY .............................................................................................. 54
9.8 FINANCIAL OVERVIEW ................................................................................................................... 54
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List of Figures
FIGURE 4-1: ALTO SUTTON (HORSE HILL) UNINCORPORATED ISLAND MAP ................................................................................. 18
FIGURE 5-1: SEWERAGE AGENCY OF SOUTHERN MARIN SERVICE AREA MAP ............................................................................... 23
FIGURE 5-2: SASM MEMBER AGENCY ASSESSMENTS ............................................................................................................. 25
FIGURE 6-1: ALMONTE SANITARY DISTRICT JURISDICTIONAL BOUNDARY AND SPHERE OF INFLUENCE ................................................ 30
FIGURE 7-1: ALTO SANITARY DISTRICT JURISDICTIONAL BOUNDARY AND SPHERE OF INFLUENCE ...................................................... 37
FIGURE 8-1: HOMESTEAD VALLEY SANITARY DISTRICT JURISDICTIONAL BOUNDARY AND SPHERE OF INFLUENCE ................................. 44
FIGURE 9-1: RICHARDSON BAY SANITARY DISTRICT JURISDICTIONAL BOUNDARY AND SPHERE OF INFLUENCE ..................................... 51
List of Tables
TABLE 1-1: LAFCO'S REGULATORY POWERS............................................................................................................................ 6
TABLE 1-2: MANDATORY DETERMINATIONS ............................................................................................................................ 7
TABLE 1-3: MARIN LAFCO COMMISSION MEMBERSHIP ............................................................................................................ 7
TABLE 2-1: SOUTHERN MARIN WASTEWATER MSR AGENCIES ................................................................................................... 8
TABLE 2-2: SOUTHERN MARIN WASTEWATER MSR AGENCIES' MEETING INFORMATION ................................................................. 9
TABLE 5-1: SEWERAGE AGENCY OF SOUTHERN MARIN OVERVIEW ............................................................................................ 20
TABLE 5-2: SEWERAGE AGENCY OF SOUTHERN MARIN BOARD OF COMMISSIONERS ..................................................................... 26
TABLE 5-3: SEWERAGE AGENCY OF SOUTHERN MARIN FINANCIAL INFORMATION ......................................................................... 27
TABLE 6-1: ALMONTE SANITARY DISTRICT OVERVIEW ............................................................................................................. 28
TABLE 6-2: ALMONTE SANITARY DISTRICT BOARD OF DIRECTORS .............................................................................................. 32
TABLE 6-3: ALMONTE SANITARY DISTRICT FINANCIAL INFORMATION .......................................................................................... 33
TABLE 7-1: ALTO SANITARY DISTRICT OVERVIEW.................................................................................................................... 35
TABLE 7-2:ALTO SANITARY DISTRICT BOARD OF DIRECTORS ..................................................................................................... 39
TABLE 7-3: ALTO SANITARY DISTRICT FINANCIAL INFORMATION ................................................................................................ 41
TABLE 8-1: HOMESTEAD VALLEY SANITARY DISTRICT OVERVIEW ............................................................................................... 42
TABLE 8-2: HOMESTEAD VALLEY SANITARY DISTRICT BOARD OF DIRECTORS ................................................................................ 46
TABLE 8-3: HOMESTEAD VALLEY SANITARY DISTRICT FINANCIAL INFORMATION ........................................................................... 48
TABLE 9-1: RICHARDSON BAY SANITARY DISTRICT OVERVIEW ................................................................................................... 49
TABLE 9-2: RICHARDSON BAY SANITARY DISTRICT BOARD OF DIRECTORS .................................................................................... 53
TABLE 9-3: RICHARDSON BAY SANITARY DISTRICT FINANCIAL INFORMATION ............................................................................... 54
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1.0 INTRODUCTION
1.1 ROLE AND RESPONSIBILITY OF LAFCO
Local Agency Formation Commissions (LAFCos) were established in 1963 and are political
subdivisions of the State of California responsible for providing regional growth management
oversight in all 58 counties. LAFCos’ authority is currently codified under the Cortese-Knox-
Hertzberg Local Government Reorganization Act of 2000 (“CKH”), which specifies regulatory
and planning powers delegated by the Legislature to coordinate and oversee the establishment,
expansion, and organization of cities and special districts as well as their municipal service areas.
Guiding LAFCos’ regulatory and planning powers is to fulfill specific purposes and objectives
that collectively construct the Legislature’s regional growth management priorities under
Government Code (G.C.) Section 56301. This statute reads:
“Among the purposes of the commission are discouraging urban sprawl,
preserving open space and prime agricultural lands, efficiently providing
governmental services, and encouraging the orderly formation and
development of local agencies based upon local conditions and
circumstances. One of the objects of the commission is to make studies
and to obtain and furnish information which will contribute to the logical
and reasonable development of local agencies in each county and to
shape the development of local agencies so as to advantageously provide
for the present and future needs of each county and its communities.”
LAFCo decisions are legislative in nature and not subject to an outside appeal process. LAFCos
also have broad powers with respect to conditioning regulatory and planning approvals so long
as not establishing terms that directly control land uses, densities, or subdivision requirements.
Regulatory Responsibilities
LAFCos’ principal regulatory responsibility involves approving or disapproving all jurisdictional
changes involving the establishment, expansion, and reorganization of cities and most special
districts.1 More recently LAFCos have been tasked with also overseeing the approval process for
cities and districts to provide new or extended services beyond their jurisdictional boundaries by
contract or agreement as well as district actions to either activate a new service or divest an
existing service. LAFCos generally exercise their regulatory authority in response to applications
submitted by the affected agencies, landowners, or registered voters.
Recent CKH amendments, however, now authorize and encourage LAFCos to initiate on their
own jurisdictional changes to form, consolidate, and dissolve special districts consistent with
1
CKH defines “special district” to mean any agency of the State formed pursuant to general law or special act for the local
performance of governmental or proprietary functions within limited boundaries. All special districts in California are
subject to LAFCo with the following exceptions: school districts; community college districts; assessment districts;
iMmparroinve LmAenFt dCisotricts; community facilities districts; and air5 p ollution control Sdiosturitchtse.r n Marin Wastewater Study
September 2023
current and future community needs. LAFCo regulatory powers are described in Table 1-1
below.
Table 1-1: LAFCo's Regulatory Powers
Regulatory Powers Granted by Government Code (G.C.) Section 56301
• City Incorporations / Disincorporation • City and District Annexations
• District Formations / Dissolutions • City and District Detachments
• City and District Consolidations • Merge/Establish Subsidiary Districts
• City and District Outside Service Extensions • District Service Activations / Divestitures
Planning Responsibilities
LAFCos inform their regulatory actions through two central planning responsibilities: (a) making
sphere of influence (“sphere”) determinations and (b) preparing municipal service reviews.
Sphere determinations have been a core planning function of LAFCos since 1971 and effectively
serve as the Legislature’s version of “urban growth boundaries” with regard to cumulatively
delineating the appropriate interface between urban and non-urban uses within each county.
Municipal service reviews, in contrast, are a relatively new planning responsibility enacted as
part of CKH and are intended to inform – among other activities – sphere determinations. The
Legislature mandates, notably, all sphere changes as of 2001 be accompanied by preceding
municipal service reviews to help ensure LAFCos are effectively aligning governmental services
with current and anticipated community needs.
1.2 MUNICIPAL SERVICE REVIEWS
Municipal service reviews were a centerpiece to CKH’s enactment in 2001 and are
comprehensive studies of the availability, range, and performance of governmental services
provided within a defined geographic area. LAFCos generally prepare municipal service reviews
to explicitly inform subsequent sphere determinations. LAFCos also prepare municipal service
reviews irrespective of making any specific sphere determinations in order to obtain and furnish
information to contribute to the overall orderly development of local communities. Municipal
service reviews vary in scope and can focus on a particular agency or governmental service.
LAFCos may use the information generated from municipal service reviews to initiate other
actions under their authority, such as forming, consolidating, or dissolving one or more local
agencies.
All municipal service reviews – regardless of their intended purpose – culminate with LAFCos
preparing written statements addressing seven specific service factors listed under G.C. Section
56430. This includes, most notably, infrastructure needs or deficiencies, growth and population
trends, and financial standing. The seven mandated service factors are summarized in the
following table.
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Table 1-2: Mandatory Determinations
Mandatory Determinations / Municipal Service Reviews
(Government Code Section 56430)
1.Growth and population projections for the affected area.
2.Location and characteristics of any disadvantaged unincorporated communities within or contiguous
to affected spheres of influence.
3.Present and planned capacity of public facilities, adequacy of public services, and infrastructure
needs or deficiencies.
4.Financial ability of agencies to provide services.
5.Status and opportunities for shared facilities.
6.Accountability for community service needs, including structure and operational efficiencies.
7.Matters relating to effective or efficient service delivery as required by LAFCo policy.
1.3 MARIN LAFCO COMPOSITION
Marin LAFCo is governed by a 7-member board comprised of two county supervisors, two city
council members, two independent special district members, and one representative of the
general public. Each group also gets to appoint one “alternate” member. Each member must
exercise their independent judgment, separate from their appointing group, on behalf of the
interests of all residents, landowners, and the public. Marin LAFCo is independent of local
government and employs its own staff. Marin LAFCo’s current commission membership is
provided below in Table 1-3.
Table 1-3: Marin LAFCo Commission Membership
Name Position Agency Affiliation
Barbara Coler – Chair City Town of Fairfax
Dennis Rodoni – Vice Chair County District 4 Supervisor
Eric Lucan County District 5 Supervisor
Lew Kious Special District Almonte Sanitary District
Steve Burdo City Town of San Anselmo
Craig Murray Special District Las Gallinas Valley Sanitary District
Larry Chu Public Commission
Roger Smith Public Alternate Commission
Cathryn Hilliard Special District Alternate Southern Marin Fire Protection District
Stephen Burke City Alternate City of Mill Valley
Stephanie Moulton-Peters County Alternate District 3 Supervisor
Marin LAFCo offices are located at 1401 Los Gamos Drive, Suite 220 in San Rafael.
Information on Marin LAFCo’s functions and activities, including reorganization applications,
are available by calling (415) 448-5877 by e-mail to staff@marinlafco.org or by visiting
www.marinlafco.org.
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2.0 EXECUTIVE SUMMARY
This study represents Marin LAFCo’s scheduled regional municipal service review of local
agencies providing wastewater services in the region of southern Marin County. The underlying
aim of the study is to produce an independent assessment of municipal services in the region
over the next five to ten years relative to the Commission’s regional growth management duties
and responsibilities. The information generated as part of the study will be directly used by the
Commission in (a) guiding subsequent sphere of influence updates, (b) informing future
boundary changes, and – if merited – (c) initiating government reorganizations, such as special
district formations, consolidations, and/or dissolutions.
2.1 AFFECTED PUBLIC AGENCIES
This report focuses on four independent special districts and one joint powers authority (JPA)
operating in the Southern Marin County region as listed below and shown in Figure 2.1.
Table 2-1: Southern Marin Wastewater Study MSR Agencies
Southern Marin Wastewater Study Agency Names
Almonte Sanitary District
Alto Sanitary District
Homestead Valley Sanitary District
Richardson Bay Sanitary District
Sewerage Agency of Southern Marin
2.2 PLANS, POLICIES, STUDIES
Key references and information sources for this study were gathered for each agency considered.
The references utilized in this study include published reports; review of agency files and
databases (agendas, minutes, budgets, contracts, audits, etc.); Master Plans; Capital Improvement
Plans; engineering reports; EIRs; finance studies; general plans; and state and regional agency
information (permits, reviews, communications, regulatory requirements, etc.). Additionally, the
LAFCo Executive Officer and Deputy Executive Officer contacted each agency with requests for
information.
The study area for this MSR includes two cities as well as a number of unincorporated areas
adjacent to the cities. In the areas entirely outside of the cities, Marin County has the primary
authority over local land use and development policies (and growth). The City of Mill Valley
and the Town of Tiburon have authority over land use and development policies within their
respective jurisdictions. City, County, and Community plans were vital for the collection of
baseline and background data for each agency. The following is a list of documents used in the
preparation of this MSR:
• County General Plans
• Specific Plans
• Community Plans
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• Previous municipal service reviews
• Wastewater Treatment Plant Master Plan
• Sewer System Management Plan
• Agency databases and online archives (agendas, meeting minutes, website information)
2.3 AGENCY AND PUBLIC PARTICIPATION
Within the approved scope of work, this study has been prepared with an emphasis on soliciting
outside public review and comment as well as multiple opportunities for input from the affected
agencies. This included an agency startup meeting with Marin LAFCo, information requests sent
to individual agencies, draft agency profiles also sent to agencies, and review of the draft report
prior to Commission action.
This MSR is posted on the Commission’s website (www.marinlafco.org). It may also be
reviewed at the LAFCo office located at 1401 Los Gamos Drive, Suite 220 in San Rafael during
open hours.
Table 2-2: Southern Marin Wastewater Agencies’ Meeting Information
Southern Marin Wastewater Municipal Service Review – Agency Transparency
Agency Governing Meeting Meeting Location Televised/ Website
Body Date/Time Streamin
g
Almonte Board of 4th Monday at SASM Office No almontesd.org/board-
Sanitary Directors 7:00 p.m. 450 Sycamore Lane meetings
District Mill Valley, CA 94941
Alto Sanitary Board of 4th Wednesday SASM Office No altosanitarydistrict.org/meeti
District Directors at 7:30 p.m. 450 Sycamore Lane ngs
Mill Valley, CA 94941
Homestead Board of 4th Tuesday at Homestead Valley No homesteadvalleysd.org/age
Valley Directors 7:30 p.m. Community Center ndas-and-minutes.php
Sanitary 315 Montford Avenue
District Mill Valley, CA 94941
Richardson Board of 3rd Tuesday at RBSD Admin Office No richardsonbaysd.org/district-
Bay Sanitary Directors 4:00 p.m. 203 Marin Drive agendas
District Mill Valley, CA 94941
Sewerage Board of 3rd Thursday SASM Office No sasmwwtp.org/board-
Agency of Directors at 6:00 p.m. 450 Sycamore Lane meeting-packets
Southern Mill Valley, CA 94941
Marin
2.4 WRITTEN DETERMINATIONS
The Commission is directed to prepare written determinations to address the multiple governance
factors enumerated under G.C. Section 56430 anytime it prepares a municipal service review.
These determinations are similar to findings and serve as independent statements based on
information collected, analyzed, and presented in this study’s subsequent sections. The
underlying intent of the determinations is to identify all pertinent issues relating to the planning,
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delivery, and funding of municipal services as it relates to the Commission’s role and
responsibilities. An explanation of these seven determination categories is provided below.
1. Growth and Population
This determination evaluates existing and projected population estimates for each of the
unincorporated communities within the study area.
2. Location and Characteristics of any Disadvantaged Unincorporated Communities
Within or Contiguous to the Sphere of Influence.
This determination was added by Senate Bill (SB) 244, which became effective in
January 2012. A disadvantaged community is defined as an inhabited community of 12 or
more registered voters having a median household income of 80 percent or less than the
statewide median household income.
3. Capacity and Infrastructure
Also discussed is the adequacy and quality of the services provided by each agency,
including whether sufficient infrastructure and capital are in place (or planned for) to
accommodate planned future growth and expansions.
4. Financing
This determination provides an analysis of the financial structure and health of each
service provider, including the consideration of rates and service operations, as well as
other factors affecting the financial health and stability of each provider. Other factors
considered include those that affect the financing of needed infrastructure improvements
and compliance with existing requirements relative to financial reporting and
management.
5. Shared Facilities
Opportunities for districts to share facilities are described throughout this MSR. Practices
and opportunities that may help to reduce or eliminate unnecessary costs are examined,
along with cost avoidance measures that are already being utilized. Occurrences of
facilities sharing are listed and assessed for more efficient delivery of services.
6. Government Structure and Local Accountability
This subsection addresses the adequacy and appropriateness of existing boundaries and
spheres of influence and evaluates the ability of each service provider to meet its
demands under its existing government structure. Also included is an evaluation of
compliance by each provider with public meetings and records laws (Brown Act).
7. Other Matters Related to Effective or Efficient Service Delivery, as Required by
Commission Policy
Marin LAFCo has specified the sustainability of local agencies as a priority matter for
consideration in this MSR. Sustainability is not simply about the environment but can
consider the sustainability of an organization and its ability to continue to provide
services efficiently for many years to come. Sustainable local governments that take
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practical steps to protect the environment and our natural resources through land
conservations, water recycling and reuse, preservation of open space, and opting to use
renewable energy are the key players in determining the sustainability of the region.
In addition, other matters for consideration could relate to the potential future SOI
determination and/or additional effort to review potential advantages or disadvantages of
consolidation or reorganization.
A summary of determinations regarding each of the above categories is provided in Chapter 3
of this document and will be considered by Marin LAFCo in assessing potential future changes
to an SOI or other reorganization.
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3.0 DETERMINATIONS
The Commission is directed to prepare written determinations to address the multiple
governance factors specified under Government Code Section 56430 anytime it prepares a
municipal service review. These determinations serve as independent statements based on
information collected, analyzed, and presented in this study’s subsequent sections. The
underlying intent of the determinations is to provide a succinct detailing of all pertinent
issues relating to the planning, delivery, and funding of public services in the study area as it
relates to the Commission’s role and responsibilities.
Growth and population projections for the affected area.
a)Anticipated growth in the study area is projected to be minimal. The vast majority of
developable land that is zoned for residential development within the study area is essentially
built out, and the rezoned areas intended to comply with the State’s Regional Housing Needs
Assessment will not be of significant enough size or density to be impactful to municipal
service providers. The combined population growth within the jurisdictional boundaries of
the four special districts was approximately 0.8% over the course of 10 years between 2010-
2020. The projected annual growth rate (combined) within the study area through 2040 is
approximately 0.073%. While not reviewed in this study, as member agencies of SASM, it is
pertinent to mention that the City of Mill Valley has a projected annual growth rate through
2040 of approximately .38%, and Tamalpais Community Services District (as part of the
greater census-designated place of Tamalpais-Homestead Valley)has a projected annual
growth rate through 2040 of approximately 0.064%.
The location and characteristics of any disadvantaged unincorporated communities within
or contiguous to the sphere of influence.
a) At this time, there are no disadvantaged unincorporated communities identified within
the study area.
Present and planned capacity of public facilities, adequacy of public services, and
infrastructure needs or deficiencies including needs or deficiencies related to sewers,
municipal and industrial water, and structural fire protection in any disadvantaged
unincorporated communities within or contiguous to the sphere of influence.
a)Each of the reviewed agencies has shown a sufficient level offered of both services and
infrastructure necessary to continue to provide the core services currently being provided at
the levels at which they are being provided as well as having the capability to handle future
growth based on current projections. Each of the agencies reviewed has retained the services
of an engineering firm to aid in the creation of robust capital improvement plans with
significant percentages of annual revenues being dedicated to updating older infrastructure.
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b)As noted above, there are no unincorporated communities within the study area that have
been identified as disadvantaged.
Financial ability of agencies to provide services.
a) The Sewerage Agency of Southern Marin, Almonte Sanitary District, Alto Sanitary
District, Homestead Valley Sanitary District, and Richardson Bay Sanitary District all
prepare annual budgets and prepare financial statements in accordance with established
governmental accounting standards. The respective governing boards may amend their
budgets by resolution during the fiscal year in order to respond to emerging needs, changes in
resources, or shifting priorities. Expenditures may not exceed appropriations at the fund
level, which is the legal level of control.
b)District Managers and the Wastewater Treatment Plant Director are authorized to transfer
budgeted amounts between accounts, departments, or funds under certain circumstances,
however; the governing boards of each agency must approve any increase in the operating
expenditures, appropriations for capital projects, and transfers between major funds and
reportable fund groups. Audited financial statements are also prepared for each agency by
independent certified public accounting firms.
Status of, and opportunities for, shared facilities.
a) As member agencies of SASM, each of the four districts in this study shares the
wastewater treatment facility. Annual revenues from each of the districts support the
operations and maintenance of the wastewater treatment plant as well as the capital
improvements. Beyond the current facilities being shared, no specific opportunities that
would be advantageous for both participating parties were identified during the course of this
study. With three of the five agencies being reviewed having no administrative offices,
facilities as a whole between these agencies are minimal.
Accountability for community service needs, including governmental structure and
operational efficiencies.
a)Almonte Sanitary District currently provides service to six parcels within the jurisdictional
boundary of Tamalpais Community Services District. Government Code Section 56133
requires cities and special districts to request and receive written approval from LAFCo
before entering into agreements to provide new or extended services outside their
jurisdictional boundaries. At this time, Marin LAFCo has no record of any approved outside
service agreement (OSA) between the two agencies. As such, Almonte Sanitary District
should submit a formal request to Marin LAFCo for an OSA to continue to provide these
services moving forward. This action should be followed by discussions on the feasibility of
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transferring this service from the Tamalpais Community Services District to Almonte
Sanitary District and formally annexing those parcels into Almonte Sanitary District.
b)Homestead Valley Sanitary District currently provides service to two parcels within the
jurisdictional boundary of Tamalpais Community Services District. Government Code
Section 56133 requires cities and special districts to request and receive written approval
from LAFCo before entering into agreements to provide new or extended services outside
their jurisdictional boundaries. At this time, Marin LAFCo has no record of any approved
outside service agreement (OSA) between the two agencies. As such, Homestead Valley
Sanitary District should submit a formal request to Marin LAFCo for an OSA to continue to
provide these services moving forward. This action should be followed by discussions on the
feasibility of transferring this service from Tamalpais Community Services District to
Homestead Valley Sanitary District and formally annexing those parcels into Homestead
Valley Sanitary District.
c) Currently, each of the member agencies that comprise the Sewerage Agency of Southern
Marin has, while at varying levels, room for growth within each of their agreed-upon
allocated capacities within the SASM treatment plant. With that said, future development
could push one or multiple of the agencies above the number of equivalent dwelling units
that it has been allocated with the agreement. The current iteration of the SASM agreement
states the following on this scenario:
“Member Entities may enter into agreements with one or more other Member Entities to
acquire, temporarily or permanently, some portion or all of that Member Entity(ies’) unused
Capacity Allocation upon such terms and conditions as the affected Member Entities may
mutually agree in writing; but no such agreement shall be effective without the consent of the
Agency, which consent shall not be unreasonably withheld. Agency considerations will
include an assessment of the impact on the adequacy of Agency facilities. Any reallocations
of Capacity Allocations pursuant to this Subsection shall be recognized by the Agency for the
purpose of capital facilities charges and other similar purposes.”
At this time, there is no specific language within the SASM agreement as to what the
parameters of the purchasing of unused capacity allocation from another member agency
would entail. Prior to this hypothetical becoming a reality, it would be prudent for the SASM
member agencies to begin preliminary discussions with one another regarding the addition of
specific language to the agreement on what the exact structure of this transaction would look
like should the time come.
d)The municipal service review requirements added to LAFCo’s responsibilities in 2000 are
intended to generate a rethinking of government structure where change might yield either
cost savings or improvements to service. More recent economic and fiscal problems
affecting local government revenues add to the reasons for an active approach to considering
alternative service arrangements where the possibility of greater efficiency clearly exists.
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The level of public engagement in matters relating to sewer service in southern Marin is very
low. With the exceptions of major capital improvement planning and service rate reviews,
public information on sewer operations is not widely distributed. Since 1967, members of
the four sanitary district governing boards within this study have necessitated a formal
election a total of 12 times in a combined 107 possible election cycles. Two of the Districts,
Almonte and Alto, held zero elections in that time. In addition, the Board of Supervisors was
forced to appoint 21 members to these boards during that span, with Almonte and Alto
having the two highest numbers of Board of Supervisors appointments of any special district
in Marin County. In addition, in the November 2022 election cycle, when the Board of
Supervisors went to the public to make the appointments for two of the three seats on the
Alto Sanitary District Board in response to nobody filling out the paperwork to run for those
seats in the election, the Board of Supervisors was faced for the first time in its history with
any special district in Marin County of being unable to secure appointees for the seats. The
seats were eventually filled by way of appointment by the existing Alto Sanitary District
Board members.
The vast majority of the annual sewer service expenditures for each of the four districts go to
the cost of contract treatment service and capital improvements. The local control over a
municipal service afforded by a special district board is meaningful only if the scope of
activities and decisions of that governing board are known to the public and attract
participation by constituents. Where this is not the case because the service role is very
limited or board discretion over spending is very narrow, the practical meaning of “local
control” is diminished.
While reorganization of the agencies themselves may not be feasible in the foreseeable future
without the support of the board members, an examination of the number of members that
make up the governing boards of Alto and Almonte should be considered in an effort to
provide these small districts with a greater probability of seats being filled by way of “local
control” as opposed to the alternative when there is not enough public interest generated,
which is appointments by the Marin County Board of Supervisors. The adjustment of the
number of members on a given board from five to three would alleviate the burden of finding
additional members to fill the seats as well as the realization of a small annual cost savings to
the district in board member meeting participation stipends.
Any other matter related to effective or efficient service delivery, as required by
commission policy
a) Currently, Alto Sanitary District, Almonte Sanitary District, Homestead Valley Sanitary
District, and Richardson Bay Sanitary District share what is known within Marin LAFCo
policy as a sphere of influence in common. In 2010, the Marin LAFCo Policy Handbook
was updated with the following in section 5.1 (b)(iii):
“The policies, procedure, and guidelines of Marin LAFCo provide that, where two or more
single-purpose special districts providing the same service are contiguous, those districts may
Marin LAFCo 15 Southern Marin Wastewater Study
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be allocated a sphere of influence in common to include the areas served by both (or all)
districts. This designation may be assigned where LAFCo believes that the particular service
would be most efficiently provided to multiple communities by a single special district.”
Considering the manner in which the prior attempt at the consolidation of the four districts
was unsuccessful, the removal of the language of AB 1232 from State Government Code that
granted the Commission the power to consolidate these agencies without protest hearings, the
13 years that have passed since the creation of this policy and the adoption of this sphere of
influence determination, and with the low protest threshold needed to defeat future
consolidation efforts (especially in light of the diminutive size of each district’s population),
it is recommended that the Commission re-examine whether it still believes that a single
special district would most efficiently provide the service to these communities and, if so,
whether there is a feasible path toward the consolidation of these agencies in the foreseeable
future. If the Commission deems both of these things to still be the case, then the current
policy needs no adjustment and the current sphere of influence in common should be
reaffirmed. If, however, the Commission no longer believes that a single special district
would most efficiently provide the service to these communities and/or that there is no
feasible path toward the consolidation of these agencies in the foreseeable future, the
Commission should explore the removal of this policy as it would be fundamentally
ineffectual. This would in turn also require the amendment of the current sphere of influence
in common to each agency having its own sphere of influence that is coterminous with its
current jurisdictional boundary.
Marin LAFCo 16 Southern Marin Wastewater Study
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4.0 REGIONAL SETTING
The Southern Marin Wastewater Municipal Service Review (MSR) study area consists of the
northern perimeter of Richardson Bay stretching along Marin County’s southern Highway 101
corridor to the northernmost point of the City of Mill Valley. Five public agencies, including
one Joint Powers Authority (JPA), are included. Many distinct communities lie within and
adjacent to the Study Area. These communities are served by a number of municipal service
providers that have been established over time to meet local conditions and needs. While
jurisdictional boundaries define the geographical extent of an agency’s authority and
responsibility to provide services, there are several instances of overlapping boundaries and
service responsibilities in the Study Area. These service arrangements and relationships for
providing municipal services within the Study Area are described in this report.
Within the Study Area, all incorporated and unincorporated communities are within the current
boundary or service area of a fire protection and emergency medical service provider. While
there are several small pockets of development in the Study Area that are not currently provided
sanitary sewer service by a local agency, the vast majority are within the jurisdictional boundary
Marin LAFCo 17 Southern Marin Wastewater Study
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of one of the sanitary sewer agencies. The Marin Municipal Water District provides water for
domestic use and fire-flow to the entire Study Area.
4.1 UNINCORPORATED ISLANDS
The State Legislature has recognized that pockets of unincorporated territory that are surrounded
or substantially surrounded by incorporated cities, typically known as “islands”, create
governance and service delivery inefficiencies and deficiencies. Marin LAFCo’s
Unincorporated Island policy encourages annexations of islands to cities, where supported by the
island community, to further reduce and/or eliminate islands to provide more orderly local
governmental boundaries and cost-efficiencies. However, Marin LAFCo will not independently
proceed with an entire island annexation to a municipality where local residents have voiced
opposition.
There is one identified unincorporated island in the study area that is substantially surrounded by
the City of Mill Valley: the Alto Sutton (Horse Hill) neighborhood in the eastern border area of
the City of Mill Valley. The Alto Sutton island is comprised of approximately 200 parcels, a
majority of which are developed, and is approximately 40 acres in size. The unincorporated
island is relatively unique as the City’s jurisdictional boundary actually bisects the
unincorporated neighborhood completely in one area leaving a patch of 23 parcels completely
surrounded by City lands. The Alto Sutton area has a population of approximately 700. Access
to the Alto Sutton area is through Mill Valley Streets and is currently within the City’s sphere of
influence. The Alto Sutton area is located so close to City facilities that the area may already be
deemed to benefit from them. If the area were annexed to the City, Alto Sanitary District would
logically be dissolved or established as a subsidiary of the City. The City of Mill Valley would
provide services and facilities at service levels which are the same or higher than currently
provided by the County and Alto Sanitary District. A map of the area can be seen below in
Figure 4-1 with the City of Mill Valley’s jurisdiction shown in purple shading and the Alto
Sutton island outlined in green.
Marin LAFCo 18 Southern Marin Wastewater Study
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Figure 4-1: Alto Sutton (Horse Hill) Unincorporated Island Map
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5.0 SEWERAGE AGENCY OF SOUTHERN MARIN
5.1 OVERVIEW
The Sewerage Agency of Southern Marin (SASM) was established in 1979 as a joint powers
authority (JPA) under Section 6500 of the California State Government Code. The JPA provides
wastewater treatment and disposal as well as water reclamation to the six member agencies that
comprise the authority: Alto Sanitary District, Almonte Sanitary District, Richardson Bay
Sanitary District, Homestead Valley Sanitary District, Tamalpais Community Services District,
and the City of Mill Valley. The JPA’s service area encompasses just under 12.06 square miles.
The last municipal service review that included SASM was conducted in 2011.
Table 5-1: Sewerage Agency of Southern Marin Overview
Sewerage Agency of Southern Marin
Primary Contact: Mark Grushayev Phone: (415)-388-2402
Mailing Address: 450 Sycamore Avenue, Mill Valley, 94941
Formation Date: June 1979
Services Provided: Wastewater Treatment/Disposal, Water Reclamation
Service Area: 7,721 acres Population Served: ≈30,000
5.2 FORMATION AND DEVELOPMENT
The Sewerage Agency of Southern Marin was formed in June of 1979 for the purpose of
carrying out the construction and installation of advanced wastewater collection, treatment,
reclamation, and disposal facilities to serve the Southern Marin area as recommended by the
Southern Marin Subregional Sewer Agency (SMSSA). The initial agreement included five
member agencies: the City of Mill Valley, Alto Sanitary District, Almonte Sanitary District,
Richardson Bay Sanitary District, and Tamalpais Community Services District. In October of
1979, in response to increasing state and federal water quality regulations that prohibited shallow
water discharge, Homestead Valley Sanitary District joined the agreement. The agreement
provided for the financing, ownership, operation, and maintenance of certain facilities already in
place, as well as responsibility for all functions pertaining to the treatment, reclamation, and
disposal of sewage and other wastewater.
Prior to SASM, two separate joint efforts preceded the formation of the JPA. The first of these,
known as Improvement District A, was formed in 1969 to gather information and do preliminary
planning for a possible sewage treatment and disposal plant in Southern Marin County.
Improvement District A was an informal structure, defined geographically, and controlled by
Marin Municipal Water District. In 1973, the Southern Marin Subregional Sewer Agency
(SMSSA) was formed as a direct result of Improvement District A’s research findings. SMSSA
was given responsibility for preparing a plan and program necessary for meeting the wastewater
treatment needs of the entire Southern Marin area. SMSSA was governed by a nine-member
board of directors, including each of the six member agencies that currently make up SASM.
Marin LAFCo 20 Southern Marin Wastewater Study
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The other three members, Sausalito-Marin City Sanitary District, Sanitation District #5, and the
City of Belvedere, took an independent course of action upon the formation of SASM in 1979.
The original wastewater treatment plant was constructed in 1954 and underwent a significant
upgrade and expansion in 1984. The site, on Sycamore Avenue within the jurisdictional
boundary of the City of Mill Valley, was chosen as the optimal site due to being relatively
central to all of the member agencies as well as being located at a low elevation, which
minimized the need for pumping and long pipelines. The City also owned the 8.34-acre property
and was willing to lease the site to SASM.
SASM’s organizational structure and delivery of services have been a topic of debate since the
completion of the treatment plant. In 1984, the SASM board of directors retained the services of
the consulting firm Angus McDonald & Associates for the purpose of performing a study on
different organizational structures to provide sewer collection and treatment services. The study
identified alternatives for the consolidation of member agencies and specifically examined one
alternative (consolidation of Alto, Almonte, Richardson Bay, and Homestead Valley Sanitary
Districts combined with a joint-powers agreement with the City of Mill Valley). The multi-
phase study was discontinued in 1985 by the SASM board when the board concluded that the
consultant was not sensitive to the board’s concerns.
In September of 2005, the 10 sewer agencies in Southern Marin (including the six SASM
member agencies) each adopted a resolution “…declaring intent to explore and implement
opportunities for functional collaboration.” Within these resolutions, each agency resolved itself
to the following:
• Participating in the formation of a Steering Committee.
• Participating in the development of a list of target activities.
• Participating on subcommittees and working groups.
• Participating in the development of a decision-making process.
• Receiving and reviewing progress reports at least twice per year.
• Seeking an implementation framework for feasible options. Joint Powers Agreements will
be considered. Establishing an initial time frame of three years to complete the exploration
and implementation of feasible collaborative efforts.
The 10 sewer agencies followed up this resolution by forming a working group of agency
managers to identify collaborative actions to improve aggregate operational efficiency. The
working group ceased meeting after approximately one year.
In late 2009, Assembly Bill 1232 was signed into law and authorized, but did not require, Marin
LAFCo to initiate reorganization or consolidation of the Sewerage Agency of Southern Marin
and its member agencies without protest hearings beginning January 1, 2011. In July 2011, the
Southern Marin Sewer Agencies Service Review and Sphere of Influence Update made multiple
recommendations for possible structures of reorganization and consolidation. In December of
2011, Marin LAFCo adopted Resolution 11-11 amending the spheres of influence of the four
sanitary district members of SASM to each be a “sphere of influence in common”. The
designation was assigned to reflect the Commission’s conclusion that the service provided by
Marin LAFCo 21 Southern Marin Wastewater Study
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Almonte, Alto, Homestead Valley, and Richardson Bay Sanitary Districts could be most
efficiently provided by a single sanitary district. On September 13, 2012, Marin LAFCo
approved Resolution 12-06 “Making determinations and approving consolidation of the Alto,
Almonte, Homestead Valley, and Richardson Bay Sanitary Districts.” The approved motion
included an agreement not to invoke the powers granted by AB 1232 to deny protest hearings.
The effective date of the reorganization was intended to be one year from the date of the
resolution’s approval with the new independent special district being called the Southern Marin
Sanitary District. On November 15, 2012, the Executive Officer of Marin LAFCo held a noticed
protest hearing and received written protests signed by registered voters from each of the four
sanitary districts affected by the consolidation approved by the Commission. On December 4,
2012, the Marin County Elections Department reported sufficient value of written protest to
require an election in each of the four sanitary districts. In May of 2013, Measure C sent the
issue to voters of the four districts. The measure was defeated. In 2022, the language of
Assembly Bill 1232 was removed from California State Government Code.
In January 2008, SASM’s treatment plant experienced two major storm-related spill events. A
Spill Investigation Report was produced by the State Water Resources Control Board Office of
Enforcement in April 2008. The investigation concluded that on January 25, 2008, SASM by-
passed 2.45 million gallons of screened sewage influent to the equalization ponds (also referred
to as emergency storage ponds) and then to Pickleweed Inlet, which is connected to Richardson
Bay, and on January 31, 2008, another incident at SASM resulted in a spill of partially treated
wastewater to Pickleweed Inlet. SASM initially reported the volume of the second spill as 2.7
million gallons, but on February 23, 2008, the estimate was revised to 0.962 million gallons.
Following the investigation, the Environmental Protection Agency (EPA) issued an
Administrative Order applying to both SASM and its member agencies. The EPA found SASM
and its member agencies in violation of their National Pollutant Discharge Elimination System
(NPDES) permits and required each agency to maintain its collection system, control inflow and
infiltration, and manage overflows. The order required SASM and each member agency to take
actions and file reports in seven different areas including:
• Elimination of Collection System Spills
• Spill Response, Recordkeeping, Notification and Reporting
• Collection System Maintenance and Management
• Collection System Assessments
• Capacity Assurance
• Infrastructure Renewal
• Implementation Study and Report
In 2014 it was agreed that significant capital improvements were becoming necessary, and in
December 2014, a Wastewater Treatment Plant Master Plan was formed for SASM by a
consulting firm. The Master Plan laid out a full condition assessment and provided a long-term
capital improvement plan. In 2016, $38 million in bonds were issued for wastewater treatment
plant and collection system capital improvement work, with the initial major construction work
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beginning in April of 2018. Phase 1 of the renovations was completed in late 2020 and Phase 2
was completed in early 2023.
Figure 5-1: Sewerage Agency of Southern Marin Service Area
5.3 SERVICE AREA
The Sewerage Agency of Southern Marin’s service area is coterminous with the jurisdictional
boundaries of its six member agencies. The one significant caveat in this area is that, while the
entirety of the Tamalpais Community Services District is technically in the JPA’s service area,
the actual area within the District that flows into SASM is only a small portion of the District’s
collection lines. The area that is served by the SASM treatment plant is just what is known as
the Kay Park area. The remainder of the District’s wastewater collection flows into the
Sausalito-Marin City Sanitary District. The total service area of SASM is approximately 7,721
Marin LAFCo 23 Southern Marin Wastewater Study
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acres (12.06 square miles). As joint powers authorities are not assigned spheres of influence
within the California State Government Code, SASM in and of itself has no assigned sphere of
influence.
5.4 GROWTH AND POPULATION
The service area of the Sewerage Agency of Southern Marin is coterminous with the
jurisdictional boundaries of its six member agencies. The growth and population data for the
four districts within this study (Almonte Sanitary District, Alto Sanitary District, Homestead
Valley Sanitary District, and Richardson Bay Sanitary District) can be found in those district’s
respective agency profiles within this study. The remaining two agencies, Tamalpais
Community Services District and the City of Mill Valley, were both reviewed in Marin LAFCo’s
most recent municipal service review, the Golden Gate Corridor Municipal Service Review
(adopted April 2023). The growth and population statistics for those agencies can be viewed in
each of the agency profile chapters for those agencies within that study.
5.5 MUNICIPAL SERVICES
Wastewater Collection and Treatment
SASM provides wastewater treatment and disposal to each of the six collection agencies that
create the JPA’s service area. In addition to the treatment plant itself, SASM’s infrastructure
also includes 4.65 miles of gravity sewer pipes, 9 miles of force main, 6 pump stations, and 173
manholes. The wastewater treatment plant treats raw wastewater from its member agencies
through a process consisting of screening, grit removal, flow equalization, primary
sedimentation, biological treatment, secondary clarification, disinfection, and dechlorination.
Chlorine contact time is accomplished in the effluent outfall, and dechlorination occurs prior to
discharge to Raccoon Strait in the San Francisco Bay via a submerged outfall that is jointly
shared with Sanitary District No. 5 of Marin County. Biosolids removed from the wastewater
stream are treated by gravity thickening, primary and secondary digestion, and dewatering by
belt filter press.
In 2022, SASM provided treatment and disposal within its service area in the total amount of
15,078.9 residential equivalent dwelling units (EDU) and 2,063.3 commercial EDUs. SASM’s
definition of an EDU is “The volume of wastewater flow produced by an average single-family
dwelling unit, which wastewater is of a composition or strength usually produced from domestic
use and which wastewater flow peaks and ebbs at the usual times of the day or night as the result
of being produced from domestic use.” Over the course of the study window (past 5 years) the
wastewater treatment plant had an average dry weather flow of 1.99 million gallons per day and
an average wet weather flow of 3.23 million gallons per day. In that same span, SASM
experienced two sanitary system overflows (both dry weather in 2018 and 2019) totaling 1,120
gallons.
In 1992, SASM adopted Ordinance 92-1 for the purpose of establishing annual sewer service
charges for wastewater treatment services provided by SASM to its member agencies. The
sewer service charge calculation relies on the calculation of EDUs to proportionately allocate
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SASM's costs to each member agency annually. SASM’s capital and debt expenditures are
allocated to each member agency based upon a fixed percentage assigned to each member
agency, which is designed to reflect each member agency’s allocated capacity of the treatment
plant. SASM’s operations and maintenance (O&M) expenditures are allocated to each member
agency based upon their respective percentage of EDUs. Each year the EDUs are calculated and
self-reported by each respective member agency. Over the course of the past five fiscal years,
the average annual combined member agency assessments have been $8,265,735. Member
agency assessments for FY 2021/22 and 2022/23 can be seen below in Figure 5-2. For reference,
% (1) in the table refers to allocated capacity of treatment works and % (2) refers to current
member agency EDU counts used to calculate percentages.
Figure 5-2 – SASM Member Agency Assessments
5.6 ORGANIZATION STRUCTURE
Board of Directors
The Sewerage Agency of Southern Marin receives oversight and policy direction by way of a
six-member Board of Commissioners. Each of the six member agencies appoints one member of
its governing body as a delegate to serve on the SASM Board. While the SASM member
agencies have varying levels of ownership stakes in the treatment plant, each member agency has
an equal vote on the SASM Board.
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Table 5-2: Sewerage Agency of Southern Marin Board of Commissioners
Member Position Member Agency
Lew Kious President Almonte
Al Leibof Vice-President Homestead Valley
Todd Gates Secretary Alto
Peter McIntosh Commissioner Richardson Bay
Jim Jacobs Commissioner Tamalpais CSD
Steven Burke Commissioner City of Mill Valley
Administration
SASM receives its staffing resources through an operations and maintenance agreement with the
City of Mill Valley. The City Manager and Public Works Director oversee the Treatment Plant
Manager, staff, and SASM operations. The Wastewater Treatment Plant Director reports to the
City Manager and functions as the Agency’s General Manager (GM). The GM provides written
reports and recommendations to the SASM Board of Commissioners, monitors budgets and
performance, directs contractor activities in making capital improvements and in the
cleaning/inspection of the sewer system, manages sewer overflow response as the legally
responsible official, prepares and submits reports, and writes the annual work plan for
maintaining, inspecting, and improving the sewer system. In total, SASM contracts with the City
of Mill Valley for 16 full-time equivalent (FTE) employees.
5.7 ACCOUNTABILITY AND TRANSPARENCY
The Sewerage Agency of Southern Marin makes a concerted effort to maintain high
accountability and transparency with all of its activities. The Agency’s website maintains a
robust web presence with multiple pages dedicated to the JPA (sasmwwtp.org). The SASM web
pages provide extensive documentation and information on Board meetings, financial reports,
services, projects, sewer system management plans, and more. At thiqs time, SASM is meeting
all of the transparency requirements of a public agency for the State of California
Meeting and Agendas
The SASM Board of Directors meets regularly on the 3rd Thursday of each month at 6:00 p.m. at
the SASM office at 450 Sycamore Avenue in Mill Valley. Special meetings are held as needed
to go over specific topics. Meeting agendas and minutes can be found on the SASM website
(sasmwwtp.org/917/Board-Meeting-Packets).
Annual Budget Review
The SASM budget, typically adopted no later than the May Board meeting each year, provides
overall control of revenue and expenditures including appropriations on a line-item basis and the
means of financing them. The Wastewater Treatment Plant Director presents financial reports to
the Board every month to assure budgetary compliance.
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5.8 FINANCIAL OVERVIEW
Over the course of the study window (past 5 fiscal years), SASM has maintained increases in
total net position each year, with the exception of fiscal year 2019-20. This anomalous decrease
in net position was due, in part, to a reduction of cash held in order to fund the ongoing
wastewater treatment plant improvement project. Strictly operationally, the District’s revenues
have outpaced expenditures in each of the past five fiscal years, by an annual average of
approximately $749,220. The average annual operating revenues for the District over the 5-year
period were $8,566,360. Virtually all (98%) of the Agency’s revenue comes from charges for
services in the form of assessments paid to the Agency by its members. The remaining two
percent comes primarily from investment earnings and a small amount from other operating
revenues. Investment interest revenues have seen significant decreases( -84% FY 2020-21 and -
218% FY 2021-22) as a result of the dramatic reduction in the rate of return from investments
and fair value decline in the value of the Agency’s investment in the City of Mill Valley’s
investment pool. The primary annual operating expenses for SASM are Operations and
Maintenance (67%), and Salaries and Benefits (31%). The projected total revenue for the
District for fiscal year 2023-24 is $10,287,614. A breakdown of the past 5 years of operational
revenues and expenses can be seen below in Table 5-3.
Table 5-3: Sewerage Agency of Southern Marin Financial Information
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Averages
Revenue
Member
$7,069,700 $7,635,300 $8,246,100 $8,740,800 $9,178,000 $8,173,980
Assessments
Investment
$25,300 $485,700 $257,800 $42,200 ($50,100) $152,160
Revenue
Other
$164,300 $489,000 $167,700 $198,400 $181,700 $240,220
Revenues
Total $7,259,200 $8,121,489 $8,671,600 $8,981,400 $9,309,600 $8,566,360
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Averages
Expenses
Salaries &
$2,847,600 $2,722,400 $2,953,000 $2,835,200 $2,589,200 $2,789,480
Benefits
Operations &
$2,639,800 $3,988,900 $6,384,500 $5,732,800 $5,903,800 $4,929,960
Maintenance
Total $5,487,400 $6,711,300 $9,337,500 $8,568,000 $8,493,000 $7,719,440
Debt
As of June 30, 2022, SASM was carrying $41,777,427 in long-term liabilities. This amount is
inclusive of net pension and other post-employment benefits (OPEB) liabilities as well as
compensated absences. The sources of the Agency’s long-term liabilities are outlined below.
• 2016 Revenue Bonds - On November 9, 2016, SASM issued $38,000,000 in its Revenue
Bonds, Series 2016. The revenue bonds were sold to provide financing for improvements
to the infrastructure and to refund the outstanding revenue bonds, series 2012 and refund
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the $2,165,000 in outstanding bond anticipation notes. SASM transferred $6,623,752 in
bond proceeds and $89,838 in existing funds to an escrow agent to advance refund the bond
anticipation notes and defease the 2012 revenue bonds. Interest and principal on the bonds
is payable in semiannual installments of principal and interest through July 1, 2046. The
bonds bear interest at rates of 3%-5%. The bonds are limited obligations of SASM payable
solely from revenues under the indenture which revenues shall consist of essentially the
member assessments paid each year to SASM for the operation and maintenance of the
treatment plant and system. Each of the member agencies have agreed to pledge their net
system revenues to the extent that SASM will be able to provide sufficient funds to pay the
principal and interest on the bonds. Member agencies have agreed to rate covenants
providing for rate structures sufficient to generate enough revenues to operate their
wastewater systems and pay the member assessments levied by SASM to cover operating
costs and the debt service on the 2016 revenue bonds.
• Long-Term O&M Agreement Payable to the City of Mill Valley – SASM has an
operations and maintenance agreement with the City of Mill Valley wherein SASM agreed
to pay to the City all costs associated with the operations, maintenance, administration, and
capital improvements of SASM. The City hires employees specifically for the purpose of
operating, maintaining, and managing SASM’s wastewater treatment and disposal
facilities. The costs of these employees as well as related pension and post-employment
benefits are deemed as allowable costs under the agreement. SASM itself does not
maintain separate employees’ pension or post-employment benefits trust. As such,
employees providing services to SASM participate in the City’s PERS retirement and
OPEB plans. Because of the financing agreement between the City and SASM which
requires SASM to pay all costs, SASM has reported a long-term obligation payable to the
City equal to the actuarially determined prorate share of the City’s net pension liability,
related pension deferrals, and OPEB liabilities. This amount totaled $5,957,999 as of June
30, 2022.
Financial Audit
The Sewerage Agency of Southern Marin annually has its financial statements audited and
contracts with an outside accounting firm, Terry E. Krieg, CPA. The most recent audited
financial statement was prepared for the fiscal year ending June 30, 2022.
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6.0 ALMONTE SANITARY DISTRICT
6.1 OVERVIEW
The Almonte Sanitary District (ASD) was established in 1952 as an independent special district
under Section 6400 of the California State Health and Safety Code. The District provides
wastewater collection as well as garbage/refuse collection to the unincorporated community of
Almonte. The District is one of six member agencies that comprise the Sewerage Agency of
Southern Marin which is a joint powers authority (JPA). The District’s jurisdictional boundary
encompasses just under 0.42 square miles. The last municipal service review that included
Almonte Sanitary District was conducted in 2011.
Table 6-1: Almonte Sanitary District Overview
Almonte Sanitary District
Primary Contact: Shonn Dougherty Phone: (415)-388-8775
Mailing Address: P.O. Box 698, Mill Valley, CA 94942
Formation Date: 1952
Services Provided: Wastewater Collection, Garbage/Refuse Collection
Service Area: 259.66 acres Population Served: ≈2,000
6.2 FORMATION AND DEVELOPMENT
The Almonte Sanitary District encapsulates an unincorporated area that is contiguous to the
southeastern corner of the City of Mill Valley. The community originally spawned in the early
1900s primarily due to the construction of the Almonte Train Station which was an important
transfer point on the Northwestern Pacific Electric Railroad. At the time, travelers arriving by
ferry to Sausalito from San Francisco were offered trains to San Anselmo, San Rafael, Tiburon
Peninsula, and Mill Valley. Almonte Station was the division point. Trains from this point went
their varying directions. The community of Almonte slowly formed during the first half of the
20th Century, and in 1952, the Almonte Sanitary District was formed in order to convert the area
from septic tanks to a sewer system.
In June of 1979, in response to increasing state and federal water quality regulations that
prohibited shallow water discharge, the Almonte Sanitary District joined four other sewer
collection agencies in Southern Marin to form a Joint Powers Agency titled the Sewerage
Agency of Southern Marin (SASM). SASM was formed to expand the wastewater treatment and
disposal capabilities of the City of Mill Valley’s wastewater treatment plant in order to address
increased regulatory requirements, apply for available federal and state grant monies to finance
the improvement, and to provide a consolidated management framework to effectively and
efficiently meet the needs of approximately 29,000 residents in Southern Marin County.
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Figure 6-1: Almonte Sanitary District Jurisdictional Boundary and Sphere of Influence
6.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE
The Almonte Sanitary District’s jurisdictional boundary encompasses approximately 0.42 square
miles of unincorporated Marin County. The District’s service area is the unincorporated territory
between Homestead Valley and Tamalpais Valley along the west side of Miller Avenue and
Almonte Boulevard extending to Tamalpais Junction. The territory also includes open space
areas and businesses on the northeast side of the Tamalpais Junction commercial area. Marin
LAFCo has no record of changes in the District’s jurisdictional boundary. In the jurisdictional
boundary shown above in Figure 6-1, a small area to the east of State Highway 101 is shown as
being part of the District. After researching the District’s boundary history, it has been
established that this area is not a part of the District but rather a longstanding mapping error that
will be corrected as a result of this study.
The District’s sphere of influence was established by Marin LAFCo in 1983 as an “interim
sphere of influence” designating a projected maximum service area that would remain in effect
until the District’s service area was presumably annexed to the City of Mill Valley or until the
Marin LAFCo 30 Southern Marin Wastewater Study
September 2023
District was consolidated with another special district that provides the same services. The
adopted interim sphere of influence was coterminous with the District’s boundary. In 2005, the
sphere of influence was reaffirmed with the interim designation to “…express this Commission’s
expectation that Almonte Sanitary District will continue to provide service within its present
boundaries while engaged in functional collaboration efforts with neighboring sewer agencies
and that political consolidations should be evaluated by southern Marin sewer agencies in the
future as appropriate.” In 2011, the Commission updated the sphere of influence as a “sphere of
influence in common”, stating the following, “The Policies, Procedure, and guidelines of Marin
LAFCo provide that, where two or more single-purpose special districts providing the same
service are contiguous, those districts may be allocated a sphere of influence in common to
include the areas served by both (or all) districts. This designation may be assigned where
LAFCo believes that the particular service would be most efficiently provided to multiple
communities by a single special district.”
6.4 GROWTH AND POPULATION
The Almonte Sanitary District jurisdictional boundary is encompassed by the greater Census-
Designated Place of Tamalpais-Homestead Valley. The District lies within two separate census
block-groups within two separate census tracts: Census Tract 1281 Block Group 1 and Census
Tract 1282 Block Group 3. According to 2020 U.S. Census Redistricting Data, the population
of Census Tract 1281 Block Group 1 is 2,198, which is a 5.7% increase from the 2010 total of
2,078. The population of Census Tract 1282 Block Group 3 is 2,0432, which is an 8.9% increase
from the 2010 total of 1,875. The most recent census data shows a total of 1,763 housing units
between the two Block Groups, which is a negligible increase of 6 total housing units from 2010.
The remaining development potential in the planning area is minimal as zoning regulations
designated by the current Community Plan make the area essentially built out. While the
Association of Bay Area Governments has designated a need for a total of 3,569 additional
housing units in unincorporated Marin County by 2031 within the Regional Housing Needs
Allocation (RHNA) plan, no area with Almonte Sanitary District received designation by the
County of Marin as a potential site for new housing to meet these criteria. While Almonte
Sanitary District’s wastewater infrastructure has the capacity to support growth within the
planning area that is beyond the planning area’s potential buildout3, minimal growth is projected
in the area. As a member agency of SASM, the Almonte Sanitary District owns 5% of the
treatment plant capacity. This capacity amounts to 936 equivalent dwelling units, of which they
currently utilize 817. The District’s total equivalent dwelling units (EDU) served has been the
same number over the course of the study window (past 5 fiscal years).
6.5 MUNICIPAL SERVICES
Wastewater Collection/Solid Waste Collection
Almonte Sanitary District provides wastewater collection to all residents and businesses within
its jurisdictional boundary. The District has a total of 626 residential service connections, as
2 2020 US Census Redistricting Data
3 Marin CWP; Pg. 414
Marin LAFCo 31 Southern Marin Wastewater Study
September 2023
well as 18 commercial connections. In total, the District’s sewer infrastructure is composed of
just over 6.42 miles of 6” diameter pipe. Of that amount, 2.93 miles are vitrified clay pipe and
3.5 miles are high-density polyethylene (HDPE) pipe.
Over the past five fiscal years, the District has replaced a total of 4,220 feet of pipe within its
boundary as a product of its Capital Improvement Plan. The District is pursuing the goal of
replacing all of the vitrified clay lines within its boundaries as its annual budget allows. A
formal condition assessment was performed in 2009. Annual inspection/cleaning in combination
with the assessment allows the District to target the pipe segments that are most in need of
replacement based on the conditions ratings during those inspections.
Over the course of the past five years, the District has experienced 8 sanitary sewer overflows
(three dry weather and five wet weather) totaling approximately 4,065 gallons. Almonte
Sanitary District contracts with the private company, Roto-Rooter, as an emergency responder,
as well as cleaning and inspecting of the collection system. The District also provides service to
the Tamalpais Community Services District for collection to six residences within the TCSD
boundary. The charges for services are the same for these outside parcels as the charges within
district boundaries, which is $802 per EDU annually. The District also contracts with Mill
Valley Refuse Service for solid waste collection within its boundaries.
6.6 ORGANIZATION STRUCTURE
Board of Directors
The Almonte Sanitary District receives oversight and policy direction by way of a five-member
board that is elected to staggered four-year terms with election cycles held in even-numbered
years. All directors are required to be registered voters residing within the District’s
jurisdictional boundary. Based on data provided by the County Department of Elections which
span from 1974 to 2022, Almonte Sanitary District has at no point in that timeframe found itself
necessitating a formal board member election. This period covers 22 election cycles. In 8 of
those election cycles, not enough people filed paperwork to fill the number of seats available to
fill. In these cases, the Board of Supervisors made the appointment to fill the vacant seat. This
is the second highest amount of Board of Supervisors appointments for all special districts in
Marin County. All other new board members during that time were appointed in lieu of election.
While lack of turnover in public agency boards is not cause for concern in and of itself,
especially in smaller communities with members who continually run unopposed for many years,
some red flags are raised when it appears that there simply is not the necessary public interest or
engagement to attract candidates when there is an open board seat within the course of multiple
election cycles.
Marin LAFCo 32 Southern Marin Wastewater Study
September 2023
Table 6-2: Almonte Sanitary District Board of Directors
Member Position Term Expiration
Lew Kious President December 2024
Casey Bertenthal Secretary/Treasurer December 2026
Anne Lahaderne Director December 2024
Linda Rames Director December 2026
Robert Cox Director December 2024
Administration
The Board of Directors of Almonte Sanitary District appoints the District’s General Manager
who leads and manages the District’s day-to-day operations. The General Manager and
Assistant Manager for Almonte Sanitary District are both part-time and are the District’s only
employees and combined amount to .29 full-time equivalent (FTE) employees. The General
Manager conducts the day-to-day management of the District as specified by Board policy. The
District also utilizes the services of a Bookkeeper by way of contract.
6.7 ACCOUNTABILITY AND TRANSPARENCY
The Almonte Sanitary District makes a concerted effort to maintain high accountability and
transparency in all its activities. The District website (almontesd.org) provides documentation
on board meeting agendas and minutes as well as financial reports, services, sewer system
management plan, permitting, contracts, and more. While as is the case with numerous small
special districts with minimal staffing, there are areas of the website that are in need of updating,
at this time the District is meeting all of the transparency requirements of special districts for the
State of California.
Meeting and Agendas
The Almonte Sanitary District Board of Directors meets regularly on the 4th Monday of each
month at 7:00 p.m. in the meeting room of the SASM offices at 450 Sycamore Lane in Mill
Valley. Special meetings are held as needed to go over specific topics. Meeting agendas and
minutes can be found on the District’s website (almontesd.org/board-meetings).
Annual Budget Review
The District’s budget, typically adopted no later than the June Board meeting each year, provides
overall control of revenue and expenditures including appropriations on a line item basis and the
means of financing them. The General Manager presents financial reports to the Board every
month to assure budgetary compliance.
6.8 FINANCIAL OVERVIEW
Over the course of the study window (past 5 fiscal years of available audited financials),
Almonte Sanitary District has maintained increases in total net position each year, with an
average annual increase over that span of 9.1%. Strictly operationally, the District’s revenues
have outpaced expenditures in each of the five fiscal years, by an annual average of
Marin LAFCo 33 Southern Marin Wastewater Study
September 2023
approximately $231,000. These excess funds are primarily allocated toward the District’s capital
improvement projects and maintaining the District’s target reserves. The average annual
operating revenues for the District over the 5-year period were $840,684, with an annual average
increase of just over 1%.
In August 2016, the District entered into a financing agreement with SASM wherein the District
agreed to maintain its net system revenues at a level equal to at least 120% of its obligation to
SASM to support the SASM bonds. The SASM issued $38,000,000 in revenue bonds to provide
financing for improvements to its wastewater treatment plant and refund other debt obligations.
The District’s annual financial obligations under the JPA agreement and the financing agreement
are passed through to the District each year in the form of a billing for an annual assessment
payable in two equal semi-annual installments. These annual assessments are reported by the
District as treatment costs. The District’s sewer service rates were last adjusted in 2016 to $802
per EDU.
The primary revenue sources for the District are sewer service charges (78%) and property taxes
(18%) with ERAF and investment income supplementing the District’s total revenues at
approximately 4%. The primary annual operating expenses for Almonte Sanitary District are
treatment costs (63%), line inspections/cleaning/repairs (15%), and salaries/benefits (9%). The
District’s capital improvement program (CIP) has been proactively working towards replacing
the older pipes throughout the boundary. Over the past five years, an average of $317,500 has
annually been spent on the CIP. During this time, the total footage of piping replaced is
approximately 4,220 feet. The District currently carries no long-term debt. A breakdown of the
past 5 years of operational revenues and expenses can be seen below in Table 6-3
Table 6-3: Almonte Sanitary District Financial Information
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Averages
Revenue
Charges for
Sewer $657,100 $662,719 $654,724 $662,700 $662,700 $659,988
Service
Other
Operating $8,300 $7,800 $8,607 $9,800 $8,100 $8,521
Charges
Property
$134,800 $143,327 $154,023 $161,300 $180,100 $154,710
Taxes
Franchise
$6,700 $7,102 $3,926 $8,400 $8,800 $6,985
Fees
Investment
$10,500 $19,001 $23,292 $6,500 $(6,900) $10,478
Income
Total $817,400 $839,949 $844,572 $848,700 $852,800 $840,684
Marin LAFCo 34 Southern Marin Wastewater Study
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Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Average
Expenses
Salaries and
$61,500 $61,011 $61,746 $62,000 $64,400 $62,131
Benefits
Treatment
$375,500 $406,653 $432,167 $461,300 $499,000 $434,924
Costs
Line
Inspections,
$74,300 $111,045 $106,152 $88,000 $82,000 $92,299
Cleaning,
Repairs
Insurance
$2,200 $2,974 $3,419 $2,500 $4,900 $3,198
and Claims
Contracts
and
$26,900 $13,338 $23,603 $17,800 $14,000 $19,128
Professional
Services
Other
$8,100 $12,689 $14,193 $14,800 $14,800 $12,916
Expenses
Depreciation $32,400 $38,663 $39,268 $47,600 $47,800 $41,146
Total $580,900 $646,373 $680,548 $694,000 $726,900 $665,744
Financial Audit
The Almonte Sanitary District annually has its financial statements audited and contracts with an
outside certified public accountant, Terry E. Krieg. The most recent audited financial statement
was prepared for the fiscal year ending June 30, 2022.
Marin LAFCo 35 Southern Marin Wastewater Study
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7.0 ALTO SANITARY DISTRICT
7.1 OVERVIEW
The Alto Sanitary District (ASD) was formed in 1951 as an independent special district under
Section 6400 of the California State Health and Safety Code. The District provides wastewater
collection to the unincorporated community of Alto and includes an area on the eastern side of
Highway 101 to the north of Tiburon Boulevard as far east as Knoll Road. The District is one of
six member agencies that comprise the Sewerage Agency of Southern Marin which is a joint
powers authority (JPA). The District’s jurisdictional boundary encompasses just under 0.18
square miles. The last municipal service review that included the Alto Sanitary District was
conducted in 2011.
Table 7-1: Alto Sanitary District Overview
Alto Sanitary District
Primary Contact: Bill Hansell Phone: (415)-388-3696
Mailing Address: P.O. Box 163, Mill Valley, CA 94942
Formation Date: 1951
Services Provided: Wastewater Collection, Solid Waste Collection
Service Area: 113.67 acres Population Served: ≈1,200
7.2 FORMATION AND DEVELOPMENT
The Alto Sanitary District boundary surrounds a fairly unique unincorporated area that, as were
many of the small unincorporated communities in Southern Marin, was birthed due to the
Northwestern Pacific Railroad. The Alto Station was built in the early 1930s and was the
stopping point for Mill Valley before the Mill Valley station was constructed. At that time, the
station was known as Blithedale Station. At the time, travelers arriving by ferry to Sausalito
from San Francisco were offered trains to San Anselmo, San Rafael, Tiburon Peninsula, and Mill
Valley. The Alto station was essentially the end of the line. Travelers leaving Mill Valley with
the desire to continue traveling north would have to head back south to the Almonte Station
which was the division point. Trains from this point went their varying directions. The
community of Alto slowly formed during the first half of the 20th Century, and in 1951, the Alto
Sanitary District was formed in order to convert the area from septic tanks to a sewer system.
In June of 1979, in response to increasing state and federal water quality regulations that
prohibited shallow water discharge, the Alto Sanitary District joined four other sewer collection
agencies in Southern Marin to form a Joint Powers Agency titled the Sewerage Agency of
Southern Marin (SASM). SASM was formed to expand the wastewater treatment and disposal
capabilities of the City of Mill Valley’s wastewater treatment plant in order to address increased
regulatory requirements, apply for available federal and state grant monies to finance the
improvement, and to provide a consolidated management framework to effectively and
efficiently meet the needs of approximately 29,000 residents in Southern Marin County.
Marin LAFCo 36 Southern Marin Wastewater Study
September 2023
Figure 7-1: Alto Sanitary District Jurisdictional Boundary and Sphere of Influence
7.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE
The Alto Sanitary District’s jurisdictional boundary encircles approximately 0.18 square miles of
unincorporated Marin County. The District’s boundary is distinctly unique as it is both bisected
by Highway 101 as well as having a detached area of its jurisdiction with an area of the City of
Mill Valley’s lands running through it. The District’s service area on the western side of
Highway 101 is the unincorporated census-designated place (CDP) of Alto. The CDP is
approximately 200 parcels and is 40 acres in size. The area within the District’s boundary on the
eastern side of Highway 101 runs along the Redwood Highway Frontage as far north as Central
Court and the southern boundary extends along North Knoll Road and is contiguous to the
boundary of Richardson Bay Sanitary District. Marin LAFCo has no record of changes in the
District’s jurisdictional boundary.
The District’s sphere of influence was established by Marin LAFCo in 1983 as an “interim
sphere of influence” designating a projected maximum service area that would remain in effect
until the District’s service area was presumably annexed to the City of Mill Valley or until the
Marin LAFCo 37 Southern Marin Wastewater Study
September 2023
District was consolidated with another special district that provides the same services. The
adopted interim sphere of influence was coterminous with the District’s boundary. In 2005, the
sphere of influence was reaffirmed with the interim designation to “…express this Commission’s
expectation that Alto Sanitary District will continue to provide service within its present
boundaries while engaged in functional collaboration efforts with neighboring sewer agencies
and that political consolidations should be evaluated by southern Marin sewer agencies in the
future as appropriate.” In 2011, the Commission updated the sphere of influence as a “sphere of
influence in common”, stating the following, “The Policies, Procedure, and guidelines of Marin
LAFCo provide that, where two or more single-purpose special districts providing the same
service are contiguous, those districts may be allocated a sphere of influence in common to
include the areas served by both (or all) districts. This designation may be assigned where
LAFCo believes that the particular service would be most efficiently provided to multiple
communities by a single special district.”
7.4 GROWTH AND POPULATION
The Alto Sanitary District jurisdictional boundary is comprised of two areas on either side of
Highway 101. On the west side of the highway, the boundary matches that of the Census-
Designated Place of Alto, which constitutes a portion of Block Group 1 within Census Tract
1262. According to 2020 U.S. Census Redistricting Data, the population of the CDP of Alto is
732, which is a 2.9% increase from the 2010 total of 711. The boundary on the eastern side of the
highway makes up the majority of the populated area of Block Group 4 within Census Tract
1241. The population of Census Tract 1241 Block Group 4 is 5534. The most recent census data
shows a total of 602 housing units between the two areas, which is a negligible increase of 3 total
housing units from 2010.
The remaining development potential in the planning area is minimal as zoning regulations
designated by the current Community Plan make the area essentially built out. While the
Association of Bay Area Governments has designated a need for a total of 3,569 additional
housing units in unincorporated Marin County by 2031 within the Regional Housing Needs
Allocation (RHNA) plan, only one site within Alto Sanitary District received designation by the
County of Marin as a potential site for new housing to meet these criteria and was rezoned. This
site is at 70 North Knoll Road, and the maximum number of units under the updated zoning
would total 59. While Alto Sanitary District’s wastewater infrastructure has the capacity to
support growth within the planning area that is beyond the planning area’s potential buildout5
and minimal growth is projected in the area, if the recently rezoned site adds the maximum
number of units allowable (59) in the form of single-family homes, it would exceed the District’s
currently agreed upon treatment capacity within SASM. As a member agency of SASM, the
Alto Sanitary District owns 3% of the treatment plant capacity. This capacity amounts to 612
equivalent dwelling units, of which they currently utilize 584.3. The District’s total equivalent
dwelling units (EDU) served has only increased by a total of 5.4 over the course of the study
window (past 5 fiscal years). If, hypothetically, the proposed maximum number of units
4 2020 US Census Redistricting Data
5 Marin CWP; Pg. 414
Marin LAFCo 38 Southern Marin Wastewater Study
September 2023
proposed (59) were constructed as single-family homes and each unit ended up equating to one
additional EDU, the District would exceed its agreed-upon allotment of treatment capacity by a
total of 31.3. As the proposed development is expected to be a higher-density single structure,
this scenario is not anticipated at this time. The current iteration of the SASM agreement states
the following on this scenario:
“Member Entities may enter into agreements with one or more other Member Entities to acquire,
temporarily or permanently, some portion or all of that Member Entity(ies’) unused Capacity
Allocation upon such terms and conditions as the affected Member Entities may mutually agree
in writing; but no such agreement shall be effective without the consent of the Agency, which
consent shall not be unreasonably withheld. Agency considerations will include an assessment
of the impact on the adequacy of Agency facilities. Any reallocations of Capacity Allocations
pursuant to this Subsection shall be recognized by the Agency for the purpose of capital facilities
charges and other similar purposes.”
At this time, there is no specific language within the SASM agreement as to what the parameters
of the purchasing of unused capacity allocation from another member agency would entail.
While it is unclear at this time whether the proposed new development will cause the District to
exceed its current treatment allocation within SASM, it would be prudent for Alto to begin
preliminary discussions with other SASM members about readjusting EDU capacity either by
transferring the potentially needed EDU, plus a few extra for future growth or having SASM
readjust for the slight change in EDU in its formula its member agencies pay.
7.5 MUNICIPAL SERVICES
Wastewater Collection/Solid Waste Collection
Alto Sanitary District provides wastewater collection to all residents and businesses within its
jurisdictional boundary. The District has a total of 565 residential service connections, as well as
9 commercial connections. In total, the District’s sewer infrastructure is composed of just over
3.12 miles of 6”- 8” diameter pipe. The pipes are a mix of the original vitrified clay, polyvinyl
chloride (PVC), and high-density polyethylene (HDPE) pipe. The District charges an annual
sewer service fee to its ratepayers of $1,500, which was set in fiscal year 2018-19
Over the past four fiscal years, the District has replaced a total of 6,688 feet of pipe within its
boundary as a product of its Capital Improvement Plan. The District is pursuing the goal of
replacing all of the older lines within its boundaries by the end of FY 2028-29. The District
maintains a schedule for sewer main replacement based on annual inspections and completes its
capital improvement projects for the year based on that schedule and any change in field
conditions. Over the course of the past five years, the District has experienced 1 sanitary sewer
overflow (three dry weather) totaling approximately 3,900 gallons. Alto Sanitary District
contracts with the private company, Roto-Rooter, as an emergency responder, as well as cleaning
and inspecting of the collection system.
The District Contracts with Mill Valley Refuse Service for trash/solid waste removal. The
agreement for services was most recently updated effective April 1, 2022.
Marin LAFCo 39 Southern Marin Wastewater Study
September 2023
7.6 ORGANIZATION STRUCTURE
Board of Directors
The Alto Sanitary District receives oversight and policy direction by way of a five-member
board that is elected to staggered four-year terms with election cycles held in even-numbered
years. All directors are required to be registered voters residing within the District’s
jurisdictional boundary. Based on data provided by the County Department of Elections which
span from 1973 to 2022, Alto Sanitary District has at no point in that timeframe found itself
necessitating a formal board member election. This period covers 25 election cycles. 6 of the
election cycles also include a necessity to fill both a full-term and a short-term seat(s). Between
the full and short-term seats, in 7 of those election cycles, not enough people filed paperwork to
fill the number of seats available. During the 1980s and 1990s in four election cycles, the Board
of Supervisors made the appointment to fill multiple vacant seats in the same year. In total, the
Board of Supervisors has appointed 11 people to be on the Board. In the last 4 election cycles,
the Board of Supervisors made appointments in two of them due to the lack of candidates. In
addition, in this last election in November 2022, two seats went without a candidate filing to run
and when the Board of Supervisors opened its period to make appointments, nobody filed to fill
the seat. In January of 2023, the District finally had two people apply and made appointments to
the two seats. This means in total 13 seats over the years, with 4 in the last 4 election cycles,
have had to be filled after the election because not enough people filed paperwork when the seat
became open. This is the highest number of appointments of any special district in Marin
County over that time. All other new board members during that time were appointed in lieu of
election. While consistent turnover in public agency boards is not cause for concern in and of
itself, some red flags are raised when it appears that there simply is not the necessary public
interest or engagement to attract candidates when there is an open board seat within the course of
multiple election cycles.
Table 7-2: Alto Sanitary District Board of Directors
Member Position Term Expiration
Janis Bosenko President December 2024
March Nash Secretary/Treasurer December 2026
Michael Faust Director December 2024
Todd Gates Director December 2024
Porter Merriman Director December 2026
Administration
The Board of Directors of Alto Sanitary District appoints the District’s General Manager who
leads and manages the District’s day-to-day operations. The General Manager for Alto Sanitary
District is part-time and is the District’s only employee, amounting to .25 full-time equivalent
(FTE) employees. The General Manager conducts the day-to-day management of the District as
specified by Board policy. The District also utilizes the services of a Bookkeeper by way of
contract.
Marin LAFCo 40 Southern Marin Wastewater Study
September 2023
7.7 ACCOUNTABILITY AND TRANSPARENCY
The Alto Sanitary District makes a concerted effort to maintain high accountability and
transparency in all its activities. The District website (altosanitarydistrict.org) provides
documentation on board meeting agendas and minutes as well as financial reports, services,
sewer system management plan, permitting, contracts, and more. At this time the District is
meeting all of the transparency requirements of special districts for the State of California.
Meeting and Agendas
The Alto Sanitary District Board of Directors meets regularly on the 4th Wednesday of each
month at 7:30 p.m. in the meeting room of the SASM offices at 450 Sycamore Lane in Mill
Valley. Special meetings are held as needed to go over specific topics. Meeting agendas and
minutes can be found on the District’s website (altosanitarydistrict.org/MEETINGS).
Annual Budget Review
The District’s budget, typically adopted no later than the June Board meeting each year, provides
overall control of revenue and expenditures including appropriations on a line item basis and the
means of financing them. The General Manager presents financial reports to the Board every
month to ensure budgetary compliance.
7.8 FINANCIAL OVERVIEW
Over the course of the study window (past 5 fiscal years of available audited financials), Alto
Sanitary District has maintained increases in total net position each year. Strictly operationally,
the District’s revenues have outpaced expenditures in each of the five fiscal years, by an annual
average of approximately $388,156. These excess funds are primarily allocated toward the
District’s capital improvement projects and maintaining the District’s target reserves. The
average annual operating revenues for the District over the 5-year period were $965,323.
In August 2016, the District entered into a financing agreement with SASM wherein the District
agreed to maintain its net system revenues at a level equal to at least 120% of its obligation to
SASM to support the SASM bonds. The SASM issued $38,000,000 in revenue bonds to provide
financing for improvements to its wastewater treatment plant and refund other debt obligations.
The District’s annual financial obligations under the JPA agreement and the financing agreement
are passed through to the District each year in the form of a billing for an annual assessment
payable in two equal semi-annual installments. These annual assessments are reported by the
District as treatment costs. The District’s sewer service rates were last adjusted in FY 2019 to
$1,500 per EDU.
The primary revenue sources for the District are sewer service charges (87%) and property taxes
(8%) with permitting fees and franchise fees supplementing the District’s total revenues at
approximately 4%. The primary annual operating expenses for Alto Sanitary District are
treatment costs (63%), line inspections/cleaning/repairs (15%), and salaries/benefits (7%). The
District’s capital improvement program (CIP) has been proactively working towards replacing
the older pipes throughout the boundary. Over the past five years, an average of $493,620 has
Marin LAFCo 41 Southern Marin Wastewater Study
September 2023
annually been spent on the CIP. During this time, the total footage of piping replaced is
approximately 7,274 feet. The District currently carries no long-term debt. A breakdown of the
past 5 years of operational revenues and expenses can be seen below in Table 7-3.
Table 7-3: Alto Sanitary District Financial Information
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Averages
Revenue
Charges for
Sewer $723,400 $871,600 $869,038 $876,003 $867,203 $841,449
Service
Property
$74,300 $78,500 $85,775 $87,288 $96,631 $84,949
Taxes
Franchise
$14,000 $14,900 $14,860 $15,673 $16,798 $15,246
Fees
Permits and
$25,800 $14,300 $14,059 $6,189 $7,521 $13,573
Fees
Grants $5,000 $5,000 $2,000
Investment
$6,300 $13,000 $16,761 $5,931 $785 $8,555
Income
Total $848,800 $992,300 $1,000,493 $996,084 $988,938 $965,323
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Average
Expenses
Salaries and
$52,800 $50,000 $49,961 $54,131 $64,712 $54,320
Benefits
Treatment
$265,400 $280,500 $307,670 $327,197 $353,337 $306,820
Costs
Line
Inspections,
$80,500 $25,700 $36,161 $43,951 $35,288 $44,320
Cleaning,
Repairs
Insurance
$800 $700 $814 $1,611 $2,070 $1,199
and Claims
Contracts and
Professional $6,000 $6,000 $6,000 $7,950 $12,400 $7,670
Services
Other
$21,100 $34,200 $26,161 $43,157 $15,590 $28,021
Expenses
Depreciation $42,100 $52,600 $63,266 $75,925 $84,881 $63,754
Total $468,700 $449,700 $490,033 $553,922 $568,278 $506,126
Financial Audit
The Alto Sanitary District annually has its financial statements audited and contracts with an
outside certified public accounting firm, O’Connor & Company. The most recent audited
financial statement was prepared for the fiscal year ending June 30, 2022.
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8.0 HOMESTEAD VALLEY SANITARY DISTRICT
8.1 OVERVIEW
Homestead Valley Sanitary District (ASD) was established in 1931 as an independent special
district under Section 6400 of the California State Health and Safety Code. The District provides
wastewater collection as well as garbage/refuse collection to the unincorporated community of
Homestead Valley. The District is one of six member agencies that comprise the Sewerage
Agency of Southern Marin which is a joint powers authority (JPA). The District’s jurisdictional
boundary encompasses just over 0.75 square miles. The last municipal service review that
included Homestead Valley Sanitary District was conducted in 2011.
Table 8-1: Homestead Valley Sanitary District Overview
Homestead Valley Sanitary District
Primary Contact: Bonner Beuhler Phone: (415)-388-4796
Mailing Address: P.O. Box 698, Mill Valley, CA 94942
Formation Date: 1931
Services Provided: Wastewater Collection, Garbage/Refuse Collection
Service Area: 482.11 acres Population Served: ≈2,500
8.2 FORMATION AND DEVELOPMENT
The Homestead Valley Sanitary District is comprised of the unincorporated community of
Homestead Valley. The community originally sprung up in the early 1900s, but it garnered its
name all the way back in 1866 when Samuel Throckmorton built a lodge at the crossing of what
is now Ethel Avenue and Montford Avenue. The lodge was named “The Homestead,” and the
area surrounding it was dubbed Homestead Valley. The area of Homestead Valley was
essentially defined by the drainage shed of what is today called Reed Creek when in 1892, the
Tamalpais Land and Water Company prepared a subdivision map for the area with the word
“Homestead” running along the creek. In 1903, Tamalpais Land and Water Company prepared
another map titled “Homestead Valley Marin County” with clearly defined lot boundaries. Soon
after, parcels began to sell, houses were built, and the community quickly grew. In 1931, the
Homestead Valley Sanitary District was established. Since that time, the boundaries of the
sanitary district have also essentially defined the boundaries of the community as well.
The District’s boundary is contiguous with the City of Mill Valley, Almonte Sanitary District,
Tamalpais Community Services District, as well as the Golden Gate National Recreation Area
and the unincorporated community of Muir Woods Park. In the early 2000s, discussions were
had about the possibility of the annexation of Muir Woods Park into the District in order to begin
providing a move away from septic for the residents of the community. In 2009, members of the
community raised the necessary funds in order to hire a consulting firm to perform a feasibility
study of how sewer lines could be installed in the Muir Woods Park subdivision and eventually
connect to SASM. Ultimately, the per-household cost proved to be a significant deterrent to a
majority of residents. There was a short exploration of the creation of a special assessment
Marin LAFCo 43 Southern Marin Wastewater Study
September 2023
district, but there simply was not the necessary community support to take it to a ballot measure.
No further discussions of annexation have occurred since.
In October of 1979, in response to increasing state and federal water quality regulations that
prohibited shallow water discharge, the Homestead Valley Sanitary District joined five other
sewer collection agencies in Southern Marin to form a Joint Powers Agency titled the Sewerage
Agency of Southern Marin (SASM). SASM was formed to expand the wastewater treatment and
disposal capabilities of the City of Mill Valley’s wastewater treatment plant in order to address
increased regulatory requirements, apply for available federal and state grant monies to finance
the improvement, and to provide a consolidated management framework to effectively and
efficiently meet the needs of approximately 29,000 residents in Southern Marin County.
Figure 8-1: Homestead Valley Sanitary District Jurisdictional Boundary and Sphere of Influence
Marin LAFCo 44 Southern Marin Wastewater Study
September 2023
8.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE
The Homestead Valley Sanitary District’s jurisdictional boundary encompasses approximately
0.75 square miles of unincorporated Marin County. The District’s service area is the
unincorporated community of Homestead Valley. Marin LAFCO is responsible for authorizing
annexations to the District based on property owner or district request, however, the District has
had few annexations since the two sewer extension projects in the 1990s and early 2000s.
Current annexations are generally on a lot-by-lot basis as septic systems fail and unincorporated
property owners apply to connect to the District’s collection system, resulting in minimal
additions to the District’s jurisdictional boundary.
The District’s sphere of influence was established by Marin LAFCo in 1983 as an “interim
sphere of influence” designating a projected maximum service area that would remain in effect
until the District’s service area was presumably annexed to the City of Mill Valley or until the
District was consolidated with another special district that provides the same services. The
adopted interim sphere of influence was coterminous with the District’s boundary except for
some additional territory to the west between Sequoia Valley Road and Panoramic Highway. In
2005, the sphere of influence was reaffirmed with the interim designation to “…express this
Commission’s expectation that Homestead Valley Sanitary District will continue to provide
service within its present boundaries and may extend new service to un-sewered areas within its
sphere of influence while engaged in functional collaboration efforts with neighboring sewer
agencies and that political consolidations should be evaluated by southern Marin sewer agencies
in the future as appropriate.” In 2011, the Commission updated the sphere of influence as a
“sphere of influence in common”, stating the following, “The Policies, Procedure, and guidelines
of Marin LAFCo provide that, where two or more single-purpose special districts providing the
same service are contiguous, those districts may be allocated a sphere of influence in common to
include the areas served by both (or all) districts. This designation may be assigned where
LAFCo believes that the particular service would be most efficiently provided to multiple
communities by a single special district.”
8.4 GROWTH AND POPULATION
The Homestead Valley Sanitary District jurisdictional boundary is encompassed by the greater
Census-Designated Place of Tamalpais-Homestead Valley. The District lies within two separate
census block-groups within Census Tract 1282: Census Tract 1282 Block Group 1 and Census
Tract 1282 Block Group 2. A majority of the District resides within Block Group 2 and only a
very small area is within Block Group 1, which primarily contains the community of Muir
Woods Park which is outside of the District’s boundary. According to 2020 U.S. Census
Redistricting Data, the population of Census Tract 1282 Block Group 1 is 611, which is a 4.9%
increase from the 2010 total of 582. The population of Census Tract 1282 Block Group 2 is
2,2226, which is an 8.1% increase from the 2010 total of 2,056. The most recent census data
shows a total of 1,213 housing units between the two Block Groups, which is an increase of 4
total housing units from 2010.
6 2020 US Census Redistricting Data
Marin LAFCo 45 Southern Marin Wastewater Study
September 2023
The remaining development potential in the planning area is minimal as zoning regulations
designated by the current Community Plan make the area essentially built out. While the
Association of Bay Area Governments has designated a need for a total of 3,569 additional
housing units in unincorporated Marin County by 2031 within the Regional Housing Needs
Allocation (RHNA) plan, no area within Homestead Valley Sanitary District received
designation by the County of Marin as a potential site for new housing to meet these criteria.
While Homestead Valley Sanitary District’s wastewater infrastructure has the capacity to support
growth within the planning area that is beyond the planning area’s potential buildout7, minimal
growth is projected in the area. As a member agency of SASM, the Homestead Valley Sanitary
District owns 7% of the treatment plant capacity. This capacity amounts to 1,314 equivalent
dwelling units, of which they currently utilize 1,100.8. The District’s total equivalent dwelling
units (EDU) served has been effectively stagnant over the course of the study window (past 5
fiscal years).
8.5 MUNICIPAL SERVICES
Wastewater Collection/Solid Waste Collection
Homestead Valley Sanitary District provides wastewater collection to all residents and
businesses within its jurisdictional boundary. The District has a total of 1,003 residential service
connections, as well as 5 commercial connections. In total, the District’s sewer infrastructure is
composed of just approximately 12.8 miles of pipe ranging from 6” to 12”. Approximately 20%
are vitrified clay pipe and 80% are high-density polyethylene (HDPE) or polyvinyl chloride
(PVC). The District charges an annual sewer service fee to its ratepayers of $1,375 for FY
2023/24 which was set in May 2021. The fee will increase in FY 2024/25 to $1,475 which will
be the final increase in the updated fee structure.
Over the past five fiscal years, the District has replaced a total of approximately 15,443 feet of
pipe within its boundary as a product of its Capital Improvement Plan. The District is pursuing
the goal of replacing all of the vitrified clay lines within its boundaries at a minimum of 2% per
year but has consistently exceeded that goal. A formal condition assessment was performed in
2012. Annual inspection/cleaning in combination with the assessment allows the District to
target the pipe segments that are most in need of replacement based on the conditions ratings
during those inspections.
Over the course of the past five years, the District has experienced 23 sanitary sewer overflows
(all dry weather) totaling approximately 4,960 gallons. Homestead Valley Sanitary District
contracts with the private company, Roto-Rooter, as an emergency responder, as well as cleaning
and inspecting of the collection system. Approximately one-third of the District’s sewer lines
are cleaned annually.
The District Contracts with Mill Valley Refuse Service for trash/solid waste removal. The
agreement for services was most recently updated effective April 1, 2016.
7 Marin CWP; Pg. 414
Marin LAFCo 46 Southern Marin Wastewater Study
September 2023
8.6 ORGANIZATION STRUCTURE
Board of Directors
The Homestead Valley Sanitary District receives oversight and policy direction by way of a five-
member board that is elected to staggered four-year terms with election cycles held in even-
numbered years. All directors are required to be registered voters residing within the District’s
jurisdictional boundary. Based on data provided by the County Department of Elections which
span from 1972 to 2022, Homestead Valley Sanitary District had four election cycles during that
timeframe in which a formal election process was necessitated (1978, 1990, 2001, 2015). This
period covers 26 election cycles. 5 of the election cycles also include a necessity to fill both a
full-term and a short-term seat(s). The Department of Election data for 2 election cycles did not
give full data so while included in the number of elections are not included in the rest of the data
numbers presented. In 3 of those election cycles (1972, 1988, 1998), not enough people filed
paperwork to fill the number of seats available to fill. In these cases, the Board of Supervisors
made the appointment to fill the vacant seat. All other new board members during that time were
appointed in lieu of election. While appointments in lieu of are not concerning in and of
themselves, having a vast majority of appointments be in lieu of or by the Board of Supervisors
does raise some concerns as to the level of community engagement and overall public
participation. With that said while doing research on this issue it is staff understanding that there
is a neighborhood group in Homestead Valley that pays attention to openings on various boards
and commissions so when an HVSD member plans to leave office they help find residents
willing to replace them.
Table 8-2: Homestead Valley Sanitary District Board of Directors
Member Position Term Expiration
Al Leibof President December 2026
Rick Montalvan Secretary December 2024
Alan Saltzman Director December 2026
Alan Wuthnow Director December 2024
Joan Florsheim Director December 2024
Administration
The Board of Directors of Homestead Valley Sanitary District appoints the District’s General
Manager who leads and manages the District’s day-to-day operations. The General Manager for
Homestead Valley Sanitary District is full-time and is the District’s only employee. The General
Manager conducts the day-to-day management of the District as specified by Board policy.
8.7 ACCOUNTABILITY AND TRANSPARENCY
The Homestead Valley Sanitary District makes a concerted effort to maintain high accountability
and transparency in all its activities. The District website (homesteadvalleysd.org) provides
documentation on board meeting agendas and minutes as well as financial reports, services,
sewer system management plans, permitting, contracts, and more. While typically small
agencies with minimal staffing struggle to keep up with website maintenance and updating,
Marin LAFCo 47 Southern Marin Wastewater Study
September 2023
Homestead Valley Sanitary District has done an exemplary job of providing extensive and up-to-
date information and documentation through its website.
Meeting and Agendas
The Homestead Valley Sanitary District Board of Directors meets regularly on the 4th Tuesday of
each month at 7:30 p.m. in the Homestead Valley Community Center at 315 Montford Avenue.
Special meetings are held as needed to go over specific topics. Meeting agendas and minutes
can be found on the District’s website (homesteadvalleysd.org/agendas-and-minutes.php).
Annual Budget Review
The District’s budget, typically adopted no later than the July Board meeting each year, provides
overall control of revenue and expenditures including appropriations on a line item basis and the
means of financing them. The General Manager presents financial reports to the Board every
month to ensure budgetary compliance.
8.8 FINANCIAL OVERVIEW
Over the course of the study window (past 5 fiscal years of available audited financials),
Homestead Valley Sanitary District has maintained increases in total net position each year.
Strictly operationally, the District’s revenues have outpaced expenditures in each of the five
fiscal years, by an annual average of approximately $475,143. These excess funds are primarily
allocated toward the District’s capital improvement projects and maintaining the District’s target
reserves. The average annual operating revenues for the District over the 5-year period were
$1,383,394, with an annual average increase of just over 5.25%.
In August 2016, the District entered into a financing agreement with SASM wherein the District
agreed to maintain its net system revenues at a level equal to at least 120% of its obligation to
SASM to support the SASM bonds. The SASM issued $38,000,000 in revenue bonds to provide
financing for improvements to its wastewater treatment plant and refund other debt obligations.
The District’s annual financial obligations under the JPA agreement and the financing agreement
are passed through to the District each year in the form of a billing for an annual assessment
payable in two equal semi-annual installments. These annual assessments are reported by the
District as treatment costs. The District’s sewer service rates were last adjusted in FY 2021 to
$1,175 per EDU. This amount will continue to increase through FY 2024-25 to an amount of
$1,475 per EDU.
The primary revenue sources for the District are sewer service charges (75%) and property taxes
(20%) with franchise fees and investment income supplementing the District’s total revenues at
approximately 5%. The primary annual operating expenses for Homestead Valley Sanitary
District are treatment costs (61%), salaries and benefits (15%), and inspections/cleaning (10%).
The District’s capital improvement program (CIP) has been proactively working towards
replacing the older pipes throughout the boundary. Over the past five years, an average of
$549,610 has annually been spent on the CIP. During this time, the total footage of piping
replaced is approximately 15,443 feet. The District currently carries no long-term debt. A
Marin LAFCo 48 Southern Marin Wastewater Study
September 2023
breakdown of the past 5 years of operational revenues and expenses can be seen below in Table
8-3.
Table 8-3: Homestead Valley Sanitary District Financial Information
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Averages
Revenue
Charges for
Sewer $912,600 $1,024,700 $1,042,300 $1,038,300 $1,042,300 $1,012,040
Service
Other
Operating $57,900 $49,300 $52,600 $48,400 $47,000 $51,040
Charges
Property
$235,900 $247,200 $260,200 $275,800 $288,200 $261,460
Taxes
Franchise
$21,600 $21,600 $23,100 $24,000 $25,000 $23,060
Fees
Investment
$4,600 $14,600 $26,800 $31,100 $7,000 $16,820
Income
Total $1,232,600 $1,357,400 $1,405,000 $1,417,600 $1,499,500 $1,382,420
Op erating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Average
Financial Audit Expenses
Salaries and
$129,800 $132,000 $132,000 $176,000 $153,600 $144,680
Benefits
Treatment
$385,100 $500,900 $552,200 $598,300 $638,900 $535,080
Costs
Line
Inspections,
$52,200 $64,200 $63,100 $207,000 $74,200 $92,140
Cleaning,
Repairs
Insurance
$8,000 $3,200 $1,800 $21,900 $14,100 $9,00
and Claims
Contracts
and
$6,000 $6,000 $6,000 $6,000 $9,000 $6,600
Professional
Services
Other
$20,300 $16,300 $17,500 $17,900 $27,600 $19,920
Expenses
Depreciation $83,500 $80,300 $98,700 $103,500 $133,000 $99,800
Total $677,700 $810,100 $888,500 $1,130,600 $1,050,400 $911,460
The Homestead Sanitary District annually has its financial statements audited and contracts with
an outside certified public accountant, Terry E. Krieg. The most recent audited financial
statement was prepared for the fiscal year ending June 30, 2022.
Marin LAFCo 49 Southern Marin Wastewater Study
September 2023
9.0 RICHARDSON BAY SANITARY DISTRICT
9.1 OVERVIEW
Richardson Bay Sanitary District (RBSD) was formed in 1949 as an independent special district
under Section 6400 of the California State Health and Safety Code. The District provides
wastewater collection unincorporated community of Strawberry as well as the northwestern area
of the Tiburon peninsula. The District is one of six member agencies that comprise the
Sewerage Agency of Southern Marin which is a joint powers authority (JPA). The District’s
jurisdictional boundary encompasses just over 2.85 square miles. The last municipal service
review that included Richardson Bay Sanitary District was conducted in 2011.
Table 9-1: Richardson Bay Sanitary District Overview
Richardson Bay Sanitary District
Primary Contact: Johnny Tucker Phone: (415)-388-1345
Mailing Address: 500 Tiburon Blvd, Tiburon, CA 94902
Formation Date: 1949
Services Provided: Wastewater Collection
Service Area: 1,827.82 acres Population Served: ≈10,000
9.2 FORMATION AND DEVELOPMENT
The Richardson Bay Sanitary District is comprised of the unincorporated community of
Strawberry as well as the northern half of the Town of Tiburon. Early settlers in the late 1800s
to Strawberry and Tiburon peninsulas were dairy farmers and gardeners. A narrow-gauge
railroad ran from Corte Madera to Sausalito via the east shore of Strawberry peninsula. There
was a 4000-foot trestle of the North Pacific Coast Railroad that spanned Richardson Bay and
made stops at the dairies, in particular the Eagle Dairy, for passengers to buy produce and dairy
products before continuing north to San Rafael. Residential development of the area began in
1947 when Oliver M. Rousseau and Claus Tornell started the development of the Strawberry
Heights Subdivision 1. By the end of 1948, approximately 20 families called Strawberry home.
In 1949, the Richardson Bay Sanitary District was formed to accommodate the continued
development in the area.
In June of 1979, in response to increasing state and federal water quality regulations that
prohibited shallow water discharge, the Richardson Bay Sanitary District joined four other sewer
collection agencies in Southern Marin to form a Joint Powers Agency titled the Sewerage
Agency of Southern Marin (SASM). SASM was formed to expand the wastewater treatment and
disposal capabilities of the City of Mill Valley’s wastewater treatment plant in order to address
increased regulatory requirements, apply for available federal and state grant monies to finance
the improvement, and to provide a consolidated management framework to effectively and
efficiently meet the needs of approximately 29,000 residents in Southern Marin County.
Marin LAFCo 50 Southern Marin Wastewater Study
September 2023
Figure 9-1: Richardson Bay Sanitary District Jurisdictional Boundary and Sphere of Influence
9.3 DISTRICT BOUNDARY AND SPHERE OF INFLUENCE
The Richardson Bay Sanitary District’s jurisdictional boundary encompasses approximately 2.85
square miles of unincorporated Marin County. The District’s service area includes the portion of
the northwestern area of the Town of Tiburon that is not within Sanitary District #5, as well as
the Strawberry peninsula. The only record of significant change to the District’s jurisdictional
boundary came in the form of the annexation of De Silva Island.
The District’s sphere of influence was established by Marin LAFCo in 1983 and included the
District’s current service area as well as the portion of Alto Sanitary District’s jurisdiction east of
Highway 101, the area of Hacienda Drive, De Silva Island, and a portion of Ring Mountain.
Since that time, De Silva Island was annexed to the District and the portion of Ring Mountain
included in the sphere was acquired as public open space. This original sphere made no
indication of any expectation on behalf of LAFCo that RBSD should undertake any change of
organization other than annexations within its sphere of influence. In 2005, the sphere of
influence was amended with the interim designation to “…express this Commission’s
Marin LAFCo 51 Southern Marin Wastewater Study
September 2023
expectation that Richardson Bay Sanitary District will continue to provide service within its
present boundaries and may extend new service to un-sewered areas within its sphere of
influence while engaged in functional collaboration efforts with neighboring sewer agencies and
that political consolidations should be evaluated by southern Marin sewer agencies in the future
as appropriate.” In 2011, the Commission updated the sphere of influence as a “sphere of
influence in common”, stating the following, “The Policies, Procedure, and guidelines of Marin
LAFCo provide that, where two or more single-purpose special districts providing the same
service are contiguous, those districts may be allocated a sphere of influence in common to
include the areas served by both (or all) districts. This designation may be assigned where
LAFCo believes that the particular service would be most efficiently provided to multiple
communities by a single special district.”
9.4 GROWTH AND POPULATION
The Richardson Bay Sanitary District jurisdictional boundary includes the Census-Designated
Place of Strawberry (Census Tract 1250), and the majority of the northwestern portion of the
Town of Tiburon (Census Tract 1241, Block Groups 1/3/5, and Census Tract 1242, Block Group
4). According to 2020 U.S. Census Redistricting Data, the population of these combined census
blocks is 9,715, which is a 3.7% decrease from the 2010 total of 10,076. The most recent census
data shows a total of 3,691 housing units between all of the Block Groups, which is an increase
of 5.1% in total housing units from 2010.
The remaining development potential in the planning area is minimal as zoning regulations
designated by the current Community Plan make the area essentially built out. The Association
of Bay Area Governments has designated a need for a total of 3,569 additional housing units in
unincorporated Marin County by 2031 within the Regional Housing Needs Allocation (RHNA)
plan. Four sites within Richardson Bay Sanitary District received designation by the County of
Marin as potential sites for new housing to meet these criteria. The four sites that have been
rezoned for potential development include the following:
• Eagle Rock Road, Strawberry (Maximum 32 units)
• 664 Redwood Highway Frontage Road, Strawberry (Maximum 60 units)
• Redwood Highway Frontage Road, Strawberry (Maximum 46 units)
• 750 Redwood Highway Frontage Road, Strawberry (Maximum 100 units)
As a member agency of SASM, the Richardson Bay Sanitary District owns 34% of the treatment
plant capacity. This capacity amounts to 6,030 equivalent dwelling units, of which they
currently utilize 4,828. The District’s total equivalent dwelling units (EDU) served has
decreased by a total of 409 over the course of the study window (past 5 fiscal years).
9.5 MUNICIPAL SERVICES
Wastewater Collection
Richardson Bay Sanitary District provides wastewater collection to all residents and businesses
within its jurisdictional boundary. The District has a total of 4,890 service connections. Of the
four collection agencies reviewed in this study, Richardson Bay Sanitary District is the only
Marin LAFCo 52 Southern Marin Wastewater Study
September 2023
agency with both gravity sewer and force main. In total, the District’s sewer infrastructure is
composed of approximately 44 miles of pipe ranging from 4” to 12”. The pipes throughout the
District vary between vitrified clay (VCP), high-density polyethylene (HDPE), ductile iron (DI),
cast iron (CIP), and polyvinyl chloride (PVC). There are 24 pump stations throughout the
District’s boundary. The District’s sewer service rates were last adjusted in FY 2016-2017 to
$390 per EDU for single-family residences and non-residential units, and $267 for multi-family
residential units. This amount continued to increase through FY 2020-21 to an amount of $826
per EDU for single-family residences and non-residential units, and $565 for multi-family
residential units.
Over the past five fiscal years, the District has replaced a total of approximately 22,405 feet of
pipe within its boundary as a product of its Capital Improvement Plan. The District maintains a
ten-year capital improvement plan, with the current plan running through fiscal year 2032-33.
Within that span, the District has plotted capital improvements that include funding allocations
of $3.75 million for sewer lines, $2.08 million for pump stations, and $476,000 for upgrades to
the District’s main office facility and vehicles.
Over the course of the past five years, the District has experienced four sanitary sewer overflows
(all dry weather) totaling approximately 1,241 gallons. Richardson Bay Sanitary District
contracts with the private company, Roto-Rooter, as an emergency responder, as well as cleaning
and inspecting of the collection system. Approximately one-third of the District’s sewer lines
are cleaned annually.
9.6 ORGANIZATION STRUCTURE
Board of Directors
The Richardson Bay Sanitary District receives oversight and policy direction by way of a five-
member board that is elected to staggered four-year terms with election cycles held in even-
numbered years. All directors are required to be registered voters residing within the District’s
jurisdictional boundary. Based on data provided by the County Department of Elections which
span from 1967 to 2022, Richardson Bay Sanitary District had eight election cycles during that
timeframe in which a formal election process was necessitated (1969, 1971, 1977, 1981, 1983,
1997, 2015, 2018). This period covers 28 election cycles. In 2 of those election cycles (1979
and 2007), not enough people filed paperwork to fill the number of seats available to fill. In
these cases, the Board of Supervisors made the appointment to fill the vacant seat. All other new
board members during that time were appointed in lieu of election. While appointments in lieu of
are not concerning in and of themselves, having a vast majority of appointments be in lieu of or
by the Board of Supervisors can raise some red flags surrounding community interest and public
engagement. Richardson Bay Sanitary District’s election frequency in juxtaposition to
appointments in lieu is on par with the average of other small special districts in Marin County.
Marin LAFCo 53 Southern Marin Wastewater Study
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Table 9-2: Richardson Bay Sanitary District Board of Directors
Member Position Term Expiration
Peter McIntosh President December 2026
David Eklund Secretary December 2024
Jeff Slavitz Director December 2024
Mark Fitzgerald Director December 2026
Patrick Walravens Director December 2026
Administration
The Board of Directors of Richardson Bay Sanitary District appoints the District’s General
Manager who leads and manages the District’s day-to-day operations. The General Manager for
Richardson Bay Sanitary District is full-time and manages the other 3.0 FTE employees
employed by the District. The General Manager conducts the day-to-day management of the
District as specified by Board policy.
9.7 ACCOUNTABILITY AND TRANSPARENCY
The Richardson Bay Sanitary District makes a concerted effort to maintain high accountability
and transparency in all its activities. The District website (richardsonbaysd.org) provides
documentation on board meeting agendas and minutes as well as financial reports, services,
sewer system management plan, permitting, contracts, and more. While typically small agencies
with minimal staffing struggle to keep up with website maintenance and updating, Richardson
Bay Sanitary District has done an exemplary job of providing extensive and up-to-date
information and documentation through its website.
Meeting and Agendas
The Richardson Bay Sanitary District Board of Directors meets regularly on the 3rd Tuesday of
each month at 4:00 p.m. in the District Administrative Office at 500 Tiburon Blvd in Tiburon.
Special meetings are held as needed to go over specific topics. Meeting agendas and minutes
can be found on the District’s website (richardsonbaysed.org/district-agendas/).
Annual Budget Review
The District’s budget, typically adopted no later than the June Board meeting each year, provides
overall control of revenue and expenditures including appropriations on a line-item basis and the
means of financing them. The General Manager presents financial reports to the Board every
month to assure budgetary compliance.
9.8 FINANCIAL OVERVIEW
Over the course of the study window (past 5 fiscal years of available audited financials),
Richardson Bay Sanitary District has maintained increases in total net position each year. The
District’s revenues have outpaced expenditures in each of the five fiscal years, by an annual
average of approximately $592,700. These excess funds are primarily allocated toward the
District’s capital improvement projects and maintaining the District’s target reserves. The
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September 2023
average annual operating revenues for the District over the 5-year period were $5,532,921, with
an annual average increase of just over 7%.
In August 2016, the District entered into a financing agreement with SASM wherein the District
agreed to maintain its net system revenues at a level equal to at least 120% of its obligation to
SASM to support the SASM bonds. The SASM issued $38,000,000 in revenue bonds to provide
financing for improvements to its wastewater treatment plant and refund other debt obligations.
The District’s annual financial obligations under the JPA agreement and the financing agreement
are passed through to the District each year in the form of a billing for an annual assessment
payable in two equal semi-annual installments. These annual assessments are reported by the
District as treatment costs. The District’s sewer service rates were last adjusted in FY 2016-017
to $390 per EDU for single-family residences and non-residential units, and $267 for multi-
family residential units. This amount continued to increase through FY 2020-21 to an amount of
$826 per EDU for single-family residences and non-residential units, and $565 for multi-family
residential units.
The primary revenue sources for the District are sewer service charges (65%) and property taxes
(33%) with connection fees, miscellaneous revenues, and investment income supplementing the
District’s total revenues at approximately 2%. The primary annual operating expenses for
Richardson Bay Sanitary District are treatment costs (67%), salaries and benefits (18%), and
operations (5%). The District’s capital improvement program (CIP) has been proactively
working towards replacing the older pipes throughout the boundary. Over the past five years, an
average of $1,057,756 has annually been spent on the CIP. During this time, the total footage of
piping replaced is approximately 22,405 feet, as well as the rehab of 68 manholes and multiple
pump stations. The District currently carries no long-term debt. A breakdown of the past 5 years
of operational revenues and expenses can be seen below in Table 9-3.
Table 9-3: Richardson Bay Sanitary District Financial Information
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Averages
Revenue
Charges for
Sewer $2,547,010 $3,166,539 $3,438,128 $3,660,770 $3,582,244 $3,278,938
Service
Connection
$34,580 $27,664 $16,835 $27,345 $38,612 $29,007
Charges
Other $48,793 $21,904 $11,491 $6,175 $6,240 $18,920
Property Tax $1,929,227 $2,022,635 $2,121,463 $2,201,174 $2,419,510 $2,138,801
Investment
$43,842 $100,172 $137,627 $48,867 $5,761 $67,254
Income
Total $4,603,452 $5,338,914 $5,725,544 $5,944,331 $6,052,367 $5,532,921
Marin LAFCo 55 Southern Marin Wastewater Study
September 2023
Operating
FY 2017-18 FY 2018-19 FY 2019-20 FY 2020-21 FY 2021-22 Average
Expenses
Treatment
$2,394,592 $2,606,612 $2,705,221 $2,859,447 $2,999,089 $2,712,992
Costs
Operating and
$1,074,466 $957,070 $1,217,227 $1,101,068 $643,794 $998,725
Maintenance
General and
$338,689 $373,799 $462,154 $382,842 $195,623 $350,621
Administrative
Depreciation $512,202 $519,827 $554,419 $565,075 $579,915 $546,287
Total $4,319,949 $4,457,308 $4,939,021 $4,908,432 $4,418,421 $4,608,626
Financial Audit
The Richardson Bay Sanitary District annually has its financial statements audited and contracts
with an outside certified public accounting firm, Perotti & Carrade. The most recent audited
financial statement was prepared for the fiscal year ending June 30, 2022.
Marin LAFCo 56 Southern Marin Wastewater Study
September 2023