HomeMy WebLinkAboutExecutive Summary Shoreline Landfill Master Plan
Shoreline Landfill Master Plan
Project 12 -39
January 2013
City of Mountain View
Public Works Department
Public Services Division
Table of Contents
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Table of Contents
Shoreline Landfill Master Plan
Executive Summary
1.0 Introduction and Overview
1.1 Shoreline Landfill Master Plan (SLMP) Goals and Objectives ............................................... 1 -1
1.2 Planning Period ................................................................................................................................ 1 -2
1.3 Site History ...................................................................................................................................... 1 -2
1.4 Report Organization ...................................................................................................................... 1 -3
2 .0 Shoreline Landfill Systems and Infrastructure Evaluation
2.1 Field Review ..................................................................................................................................... 2 -1
2 .2 Final Cover, Existing Structures, and Facilities ........................................................................ 2 -1
2 .2 .1 544 -Acre Landfill .............................................................................................................. 2 -3
2 .2.2 Vista Landfill ...................................................................................................................... 2 -5
2 .2.3 Crittenden Landfill ........................................................................................................... 2 -6
2.2.4 Shoreline Amphitheat r e ................................................................................................. 2 -7
2.2.5 Shoreline Boulevard ........................................................................................................ 2 -8
2.3 Landfill Gas Collection and Control System ............................................................................ 2 -9
2.4 Groundwater Control and Monitoring .................................................................................. 2 -1 5
2.5 Leachate and Condensate Extra c tion , Control, and Disposal .......................................... 2 -18
2.6 Storm W ater Control ................................................................................................................ 2 -18
2.7 Storm Water Monitoring ........................................................................................................... 2 -2 0
2.8 Utilities ........................................................................................................................................... 2 -21
2.9 Shoreline Sailing Lake Management ......................................................................................... 2 -22
2.10 Perimeter Levee System ............................................................................................................ 2 -24
2.11 Settlement and Stability .............................................................................................................. 2 -2 5
2.12 Burrowing Owl Habitat .............................................................................................................. 2 -25
2.13 Current and Planned Projects .................................................................................................. 2 -27
2.14 Regulatory Requirements .......................................................................................................... 2 -28
2.15 Financial Information – Post -Closure Maintenance Cost ................................................... 2 -31
2.16 Agency and Property Owners Contact Information ........................................................... 2 -32
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3 .0 Expected Events and Deficiencies Identification and Analysis
3 .1 Landfill Life Cycle ............................................................................................................................ 3 -1
3 .1.1 Methane Generation and Collection Modeling ........................................................ 3 -1
3 .1.2 Set t lement Evaluation ..................................................................................................... 3 -4
3 .2 Equipment Life Cycle ..................................................................................................................... 3 -6
3 .2.1 Landfill Gas Collection and Control System ............................................................. 3 -6
3 .2.2 Groundwater Protection and Monitoring System ................................................... 3 -9
3 .2.3 Surface Water Monitoring .......................................................................................... 3 -1 2
3 .2.4 Shoreline Sailing Lake Infrastructure ........................................................................ 3 -1 3
3 .2.5 Shoreline Boulevard Reconstruction ....................................................................... 3 -1 4
3.2.6 Construction Equipment ............................................................................................. 3 -14
3 .3 Man -Made or Controlled Events ............................................................................................. 3 -14
3 .3.1 Shoreline Amphitheat re .............................................................................................. 3 -1 5
3 .3.2 Alza/Google L andfill G as Purchase Agreement ..................................................... 3 -1 6
3 .3.3 Athletic Fields ................................................................................................................ 3 -16
3 .3.4 Shoreline Trunk Sewer Rehabilitation ..................................................................... 3 -1 7
3 .4 Regulatory Compliance .............................................................................................................. 3 -1 7
3.5 Tim eline of Expected Events ..................................................................................................... 3 -1 8
4 .0 Unexpected and Catastrophic Events Analysis
4 .1 Unexpected Events Analysis ........................................................................................................ 4 -1
4.1.1 Groundwater Corrective Action ................................................................................. 4 -1
4.1.2 Underground Landfill Fi r e s ............................................................................................ 4 -1
4.1.3 Summary of Une xpected Events Cost Estimates ..................................................... 4 -2
4 .2 Catastrophic Events Analysis ....................................................................................................... 4 -2
4.2.1 Catastro phic Events Review Guidelines ..................................................................... 4 -3
4 .3 Evalua ti on of Causal Events .......................................................................................................... 4 -4
4 .3 .1 Earthquake ......................................................................................................................... 4 -4
4 .3 .2 Precipitation ...................................................................................................................... 4 -8
4 .3 .3 Flooding .............................................................................................................................. 4 -9
4 .3 .4 Sea Level Rise ................................................................................................................ 4 -11
4 .3 .5 Tsunami ........................................................................................................................... 4 -14
4 .3 .6 Seiche ............................................................................................................................... 4 -1 5
4 .3 .7 Wild Fire ......................................................................................................................... 4 -1 5
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4 .4 Summary of Catastrophic Events Cost Estimates ................................................................ 4 -15
5 .0 Budget and Cost Estimate Project ions
5 .1 Routine Maintenance and Monitoring Costs ............................................................................ 5 -1
5 .1.1 Landfill Engineering and Operations Budget .............................................................. 5 -1
5 .1.2 Shoreline Cap Maintenance and Repair (Annual CIP Fund) .................................. 5 -2
5 .1.3 Landfill Gas and Leachate System Repairs (Annual CIP Fund) .............................. 5 -2
5 .1.4 Shoreline Pathway, Roadway, Parking Improvements (Annual CIP Fund) ......... 5 -2
5 .1.5 Shoreline Infrastructure Maintenance (Annual CIP Fund) ..................................... 5 -2
5 .1.6 Sailing Lake Water Supply System Opera t i ons and Maintenance Budget .......... 5 -3
5 .1.7 Amphitheat re Oper a tions and Maintenance ............................................................. 5 -3
5 .1.8 Athletic Field s Operations Maintenance .................................................................... 5 -3
5.1.9 Fuel Suppl e ment for Flares ............................................................................................ 5 -3
5.1.10 Shoreline Boulevard Maintenance ................................................................................ 5 -3
5.1.11 Industrial General P ermit (Draft 2012) ...................................................................... 5 -4
5.1.12 Burrowing Owl Specialist .............................................................................................. 5 -4
5 .2 Replacement and Improvement Costs ...................................................................................... 5 -4
5 .2.1 Landfill Gas System .......................................................................................................... 5 -4
5 .2.2 Shoreline Boulevard Reconstruction ......................................................................... 5 -5
5 .2.3 Sailing Lake Water Supply System ............................................................................... 5 -5
5 .2.4 Expected Events ............................................................................................................... 5 -5
5.2.5 Compliance With Industrial General Permit (Draft 2012) ................................... 5 -6
5.2.6 Construction Equipment ................................................................................................ 5 -6
5 .3 Unexpected and Catastrophi c Events Costs ........................................................................... 5 -6
5 .4 Revenue Loss ................................................................................................................................... 5 -6
6 .0 Findings
7 .0 References
7 .1 Post -Closure Infrastructure Monitoring and Maintenance ................................................... 7 -1
7 .2 Landfill Gas ....................................................................................................................................... 7 -1
7 .3 Groundwater Controls and Monitoring and Related Infrastructure ................................. 7 -2
7 .4 Storm W ater Control and Utilities ............................................................................................ 7 -3
7.5 Sea Level Rise .................................................................................................................................. 7 -4
7 .6 Financial ............................................................................................................................................. 7 -4
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LIST OF TABLES
Table 1 Post -Closure Maintenance Costs Budget Projection to 2042
Table 2 Financial Analysis Matrix
Table 3 Unexpected and Catastrophic Events Costs Summary
Table 4 FY 2011 -2012 Shoreline Post -Closure Maintenance and Monitoring Costs
Table 5 Agency and Property Owners Contact List
Table 6 Shoreline Landfill Gas Collection Predicted Flows 2012 -2042
Table 7 GCCS Proposed Operational Sequence
Table 8 GCCS Replacement Costs
Table 9 Flares Replacement Costs
Table 10 Groundwater Control System Replacement Costs
Table 11 Groundwater Monitoring System Replacement Costs
Table 12 Industrial General Permit Revision Compliance Cost
Table 13 Shoreline Lake Water Supply Systems Replacement Costs
Table 14 Construction Equipme n t Replacement Costs
Table 1 5 Amphitheat re GCCS Upgrades
Table 1 6 Alza Landfill Gas Sales Agreement
Table 1 7 Athletic Field Maintenance Costs
Table 1 8 Timeline of Expected Events
Table 19 Subsurface Fire Event Cost Estimate
Table 20 Earthquake Event Cost Estimate
Table 2 1 Final Cover , Grading, and Drai n a ge Cost Estimate – Earthquake Event
Table 2 2 Facil i ties Potentially Affected by 500 -Year Flood Event
Table 2 3 Flood Event Cost Estimate
Table 2 4 GCCS Costs – Flood Event and Sea Level Rise
Table 2 5 Facilities Potentially Affected by Sea Level Rise
Table 2 6 Sea -Level Rise Event Cost Estimate
LIST OF FIGURES
Figure 1 Regional Location and Vicinity Map
Figure 2 Overall Site Plan
Figure 3 Sailing Lake
Figure 4 Front Nine
Figure 5 6A Northeast
Figure 6 Back Nine
Figure 7 Vista Landfill
Figure 8 Crittenden Landfill
Figure 9 Shoreline Landfill Aerial Map
Figure 10 Plan and Profile of Shoreline Park Trunk Sewer
Figure 11 Cover Types
Figure 12 Gas Collection and Control System
Figure 1 3 Monitoring Points
Figure 1 4 LFG Combustion Supplemental Fuel Costs
Figure 15 MVSL Future Expenditures
Figure 16 Precipitation Frequency
Figure 17 FEMA Map
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Figure 18 FEMA Map Detail
Figure 19 500 -Year Flood Inundation Level Map
Figure 20 S ea Level Rise (Draft Living with a Rising Bay)
Figure 21 2050 Sea Level Rise Inundation Level Map
Figure 22 Tsunami Inundation Map
Figure 23 Seiche Map
Figure 24 Fire Hazard Severity Map
LIST OF APPENDICES
Appendix A Field Notes
Appendix B Site Photos
Appendix C Budget Allocation References
Appendix D Methane Collection Modeling
Appendix E Records of Alza Corporation Landfill Gas Purchases
Appendix F CalRecycle’s Non -Water Release CAP Technical Guidance
Appendix G Catastrophic Event – Earthquake Scenario
Appendix H Data List
Executive Summary
City of Mountain View
Shoreline Landfill Master Plan
Executive Summary Page ES -1
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Executive Summary
Introduction
The Shoreline Landfill Master Plan (S LMP) was developed by Tetra Tech BAS (TTBAS) at the request of
the City of Mountain View to c omprehensively evaluate the existing condition of infrastructure, identify
deficiencies, analyze potential funding impacts of new regulations, and identify future funding
requirements for operation and maintenance of its Mountain View Shoreline Landfill (MVSL). The MVSL
is integrated in and underlies the regional park known as Shoreline at Mountain View (SAMV).
The MVSL is a closed Class III solid waste landfill located approximately 30 miles south of San Francisc o
in the City of Mountain View (City) as shown on Figure ES -1. The MVSL , which is owned and was
operated by the City, is located north of Highway 101 in the relatively flat -lying tidal area adjacent to
South San Francisco Bay. The landfill site is bordere d to the north by South B ay Pond Restoration
Project (former commercial salt evaporation ponds) and to the east by Stevens Creek. Commercial and
industrial developments are located to the west and south of the landfill. Permanente Creek traverses
the west -central portion of the property and discharges to Mountain View Slough. The closed landfill
underlies SAMV, which has a multitude of land uses, including an 18 -hole golf course, driving range, two
restaurants, boathouse and sailing lake, trails, an open air amphitheater, parkin g, open space, and wildlife
habitat, including burrowing owl habitat and other recreational facilities. The landfill consists of three
distinct and separate sites: the 544 -acre site, containing approximately 350 acres of waste; the 84 -acre
Vista site, con taining approximately 65 acres of waste; and the 27 -acre Crittenden site, containing
approximately 24 acres of waste. A site plan and an aerial map of the MVSL and SAMV are shown on
Figure s ES -2 and ES -3 , respectively.
Landfill Infrastructure Master Plan Goals and Objectives
As presented in a City Council Report dated February 28, 2012 , the Landfill Infrastructure Master Plan
Study, Project 12 -39, was initia ted to evaluate the City’s closed landfill future funding requirements and
is part of a larger analysis of funding needs for the Shoreline Community. The scope of work include s a
review of the existing landfill infrastructure (landfill cover systems, landfill gas and leachate collection and
control systems, etc.), existing and anticipated future landfill regulations, regulatory permits, landfill plans
and reports, landfill gas collection data, groundwater and surface water monitoring program s and data ,
operation and maintenance record s , and other in formation as needed to identify funding requirements
and deficiencies . The City ’s objective was to develop a Master Plan that w ould evaluate the existing
landfill system s and include cost estimates for future MVSL operation, maintenance, monitoring and
co mpliance under existing and reasonably foreseeable conditions as well as potential catastrophic events
(e.g., flood events , large earthquake events).
The purpose of the SLMP is to provide a sound basis for future policy and budgetary decisions as they
relate to MVSL’s long -term infrastructure and regulatory compliance requirements. The SLMP includes
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a review of previous planning, permitting, and reporting efforts by the City and an evaluat ion of MVSL’s
operations to identify potential funding liabilities. The SLMP will be used as a “Road Map” by the City to
plan for future funding needed to operate, maintain, and repair infrastructure at the MVSL.
The planning period for this eval uation was established at 30 years (2012 through 2042 ). The latter end
of this time period coincides with a permanent reduction and a leveling off in landfill gas generation and
associated impacts to landfill gas system operation and maintenance cost s .
Challenges Going Forward
The City faces many challenges maintaining the MVSL going forward. Some of these challenges relate to
intensive end uses that have been developed over the continually settling waste footprint, such as the
golf course, the amphi theat er lawn seating area , managed wildlife habitat, and future athletic field s . The
protection of habitat for Special -Status Species within the boundaries of the MVSL will also need to be
maintained. Other challenges relate to the maintenance of the lan dfill’s post -closure infrastructure
including the below grade gas collection and control system (GCCS ) which consist s of three distinct
piping networks typically co -located within the same trench (landfil l gas collection , leachate collection ,
and compressed air supply ), groundwater monitoring network, storm water control infrastructure , and
the leachate and condensate disposal systems. Given sufficient resources and funding , the City can
continue to maintain the MVSL to the high standards that the regulatory agencies require and Cit y
residents have come to expect, and be an attribute to the community.
Additionally, California regulations specify that the operator is to maintain the landfill during the post -
closure maintenance period for a minimum of 30 years (to be reached in year 2027) or until the landfill
operator can demonstrate that the landfill is no longer a threat to human health, safety, and the
environment , which may extend beyond the minimum of 30 years . As mentioned above landfill gas will
continue to be generated, albeit at lower levels, through 2042 and beyond which will necessitate
continued post -closure maintenance past 2027. As part of the post -closure maintenance period, the
landfil l owner and/or operator is required to maintain all the environmental control systems (e.g., landfill
gas collection/control/monitoring system, groundwater extraction/monitoring system, leachate
collection system, drainage control system) as well as the 439 -acre final cover area which serves as the
containment system for the waste s . Furthermore, the owner and/or operator is required to comply
with all the associated permits, develop and submit the appropriate reports, and maintain adequate
records required by the various regulatory agencies including but not limited to the California
Department of Resources Recycling and Rec overy (CalRecycle), the State Water Resources Control
Board (SWRCB), the Regional Water Quality Control Board (RWQCB), the Solid Waste Local
Enforcement Agency (LEA), and the Bay Area Air Quality Management District (BAAQMD).
Evaluation Overview
This study involve d preparing a 30 -year SLMP primarily based on life cycle analyses of the various
infrastructure improvements at the MVSL . The SLMP include s an inventory of existing infrastructure
and environmental control elements ; an assessment of ongoing operations, monitoring and maintenance,
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an assessment of e xpected equipment repairs and replacement, and estimat ion of future funding
liabilities.
The SLMP documents TTBAS’s review of MVSL data made available by the City and de scribes the results
of a field review of the site. In addition, landfill infrastructure and systems at the MVSL requiring City
expenditures to operate and maintain in good working condition were identified. Specific costs
associated with operating and maintaining MVSL’s infrastructure and environmental control systems
were also developed and documented. Furthermore, t he SLMP documents costs associated with
ancillary improvements outside the landfill (e.g. golf course infrastructure) that could be impac ted by
landfill related issues such as settle ment. As part of the evaluation, e stimated costs for all applicable
facilities were developed for each of the following categories:
Ongoing Routine Post -Closure Maintenance and Monitoring Cost Estimate Projec tions
The ongoing routine post -closure maintenance and monitoring costs for the MVSL are distributed over
several different budget categories. The budget categories encompass the overall routine post -closure
maintenance and monitoring costs as well as co sts for rout ine projects within the Capital Improvement
Program (CIP) for the MVSL . Relevant landfill projects within the CIP Funds include projects such as the
Shoreline Cap Maintenance/Repairs, Landfill Gas/Leachate System Repairs, and Shoreline Infrastructure
Maintenance. The total annual budgeted routine post -closure maintenance , mon itoring, and CIP cost for
all the budget categories is approximately $2 .8 million in FY 2011 -2012. The routine cost s are
anticipated to increase by approximately three and a half percent (3.5%) annually to adjust for inflation
per the City’s direction as shown on Table ES -1 .
In addition to the existing ongoing routine post -closure maintenance and monitoring costs for the MVSL ,
there will also be additional future ongoing routine maintenance and monitoring cost s associated with
various development scenarios and upcoming events . These costs are associated with the termination
of the amphitheatre lease (i.e., cost to maintain landfill gas system in that area currently borne by the
Lessor ), settlement related repa irs of the proposed Athletic Fields, fuel supplement for landfill gas flares ,
compliance with the revised Industrial General Storm Water Permit, and the addition of a full time
burrowing owl specialist. The increases in annual costs associated with these events are shown on
Table ES -1 .
T he GCCS will be ramped down over time (i.e., selected wells taken off line as landfill gas generation
decreases) which will result in a corresponding decrease in routine annual costs . It is expected that
beginning in FY 2024 -2025, annual costs will drop as follows; 10% in FY 2024 -2025 to FY 2028 -2029
(approximately $1 9 1 ,000 in FY 2024 -2025 ), 20% in FY 2029 -2030 to FY 2033 -2034 (approximately
$635,000 in FY 2029 -2030 ), 30% in FY 2034 -2035 to FY 2038 -2039 (approximately $1,335,000 in FY
2034 -2035 ), and 40% in FY 2039 -2040 (approximately $2,230,000 in FY 2039 -2040 ). These estimated
cost reductions are reflected in the second line item of Table ES -1 .
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Shoreline Landfill Master Plan
Executive Summary Page ES -4
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Non -Routine Cost Estimates Projections
Expected Events and Deficiencies Identification and Analysis : Additional costs or loss of
revenue due to expected future events and identified deficiencies including non -routine CIP major
repairs and replacement s were evaluated and included in Table ES -1 and summarized in the table below .
For major construction projects , a 3.2% inflation factor average for the planning period is assumed in
line with the April 2012 Engineering News Record Construction Cost Index for the San Francisco Bay
Area. Expected e vents which have the potential to result in non -routine costs for the City at the MVSL
are associated with the l andfill g as flares and micr o turbines , S horeline Sailing Lake i nfrastructure , s torm
water monitoring and compliance , Shoreline Boulevard r econstr uction , a mphitheat re area landfill gas
system retrofit, and c onstruction e quipment replacement .
The table below summar izes key non -routine events which impact the City’s budget projections,
associated timelines for these events, and financial implications.
Expected Non -Routine Event Cost Estimate Summary Table
(S ee Table ES -1 for Details)
Key Event Fiscal Year Costs
Compliance with the Draft 2012 Industrial
General Storm Water Permit – One -Time
Improvements
2012 -2013 $7 1,000
Replacement of Flares (3 total) 2013 -201 4 $937,000
Replacement of Microturbines (2 total) 2021 -2022 $1,145,000
Amphitheater Lease Ends – Gas Collection
and Control System (GCCS ) Retrofit 2025 -2026 $81 3 ,000
Shoreline Sailing Lake Water Supply System
Replacement 2026 -2027 $4,887 ,000
Shoreline Blvd. Reconstruction 2036 -2037 $9,423,000
Construction Equipment Replacement Varies $1,894,000
Unexpected and Catastrophic Events Costs
Additional costs due to future unexpected and catastrophic events wer e evaluated. Unexpected and
catastrophic events which have the potential to increase costs for the City are associated with the
various scenarios identified in the SLMP and includ e an i ncrease in g roundwater Corrective Action Plan
(CAP) monitoring , s ub -surf ace f ire s , and the non -water release CAP . The non -water release CAP
potential causal events include e arthquake , p recipitation , f looding , t sunami , s eiche , and wild f ire s . Some of
these causal events (i.e., precipitation, tsunami, seiche, and wildfires) are not reasonably foreseeable at
the MVSL; therefore , they were not analyzed.
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Sea level rise is less likely than a flood ing event (which can occur at any moment) to cause damage if
mitigation measures (e.g., levee enhancement, sea walls, etc.) to protect the MVSL are implemented in
advance . Mitigation measures in response to sea level rise and their estimated costs for implementation
are analyzed as part of the City’s draft report titled “Shor eline Regional Park Community, Sea Level Rise
Study, Feasibility Report and Capital Improvement Program ”. Estimates of damages and associated costs
for repair from sea level rise that would potentially occur if mitigation measures are not taken are
includ ed in th is SLMP.
The Catastrophic Events a nalysis conducted for the SLMP was developed utilizing the non -water release
CAP requirements in the California Code of Regulations, Title 27 (27 CCR ), Section 22101(b) and
22102 . CalRecycle Guidance documents which supplement the regulations were also used in preparing
the analysis.
The cost estimates for the unexpected events evaluated are summarized in the table below. These are
events which could potentially occur but are unpredictable as far as when they might occur. Subsurface
fires occur every three to five years and are handled through annual CIP funds . Because of the
uncertainty of the event, costs are not included in Table ES -1.
Unexpected Event Cost Estimate Summary Table
Causal Event Estimated Cost
Increase to GW Monitoring $193,0 00
Sub -Surface Fire $21,0 00
The cost associated with catastrophic events damage estimates for the causal events evaluated in this
report for the MVSL are summarized in the table below. These are also events which could potentially
occur but are unpredictable as far as when they might occur .
Catastrophic Event Cost Estimate Summary Table
Ca usal Event Estimated Cost
Earthquake $1 1,26 6 ,000
Flooding $1,617,000
Pursuant to the schedule in 27 CCR t he non -water release CAP, cost estimates, and financial assurance
for the MVSL will be required to be developed and submitted to CalRecycle by July 1, 2013. All landfill
owners in Ca lifornia are required to meet these regulations; therefore , the City will develop an agenda
item and present the details of the financial assurance requirements and a proposed program to the City
Council for approval to meet the deadline .
The financial assurance regulations for corre ctive action cost estimates un der the California Code of
Regulations, Title 27 (27CCR), Sections 22220 an d 22221 requires operators of disposal facilities to
demonstrate the availability of financial resources to conduct corrective action activities for al l known or
reasonably foreseea ble releases from disposal facilities . Regulations in 27 CCR require financial
assurance liability based on the highest cost estimate of all the causal events. The allowable financial
assurance mechanisms are listed in 27 CCR, Sections 22240 through 22247. An Enterprise Fund or a
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Pledge of Revenue are the two most commonly used mechanisms by government entities. The City will
need to determine the best financial assurance mechanism to create in accordance with City policy .
Such funding obligations are not reflected in Table ES -1 due to the unpredicta bility of the events .
Findings
The table below summar izes the range of costs for routine post -closure maintenance and monitoring
and for non -routine expected events as well as the total 30 year costs associated with the maintenance
and monitoring of the MVSL. Currently, the annual routine post -closure maintenance and monitoring
costs are funded by the solid waste enterprise fund, which is derived from City waste collection fees and
other pertinent fees. The non -routine post -closure maintenance and monitoring costs are currently
funded by the shoreline community fund.
MVSL Routine and Non -Routine Maintenance Costs Summary Table
(S ee Table ES -1 for Details)
MVSL Costs
Range of Annual Costs
(FY 2011 -2012 to
FY 2041 -2042 )
Total
30 Year Costs
(FY 2011 -2012 to
FY 2041 -2042 )
Routine $2.8 million to $6.7 million $152 million
Non -Routine $70,000 to $9.4 million $19.4 million
Figure ES -4 provides a graphic presentation over time of the projections for future routine and non -
routine expenditures for the MVSL. The details of the ongoing routine post -closure maintenance and
monitoring cost for the MVSL is distributed over several different budget categories a s shown on Table
ES -1 . The total annual r outine post -closure maintenance and monitoring cost for all the budget
categories is projected to be approximately $2.8 million in FY 2011 -2012 and $6.7 million in FY 2041 -
2042. The non -routine periodic replacements and capital improvements costs, which vary each year
depending on the system life cycle, are also shown in detail on Table ES -1 .
TABLE ES-1
CITY OF MOUNTAIN VIEW
SHORELINE LANDFILL MASTER PLAN
POST-CLOSURE MAINTENANCE COSTS
BUDGET PROJECTIONS TO 2042
2011 - 2012 2012 - 2013 2013 - 2014 2014 - 2015 2015 - 2016 2016 - 2017 2017 - 2018 2018 - 2019 2019 - 2020 2020 - 2021 2021 - 2022 2022 - 2023 2023 - 2024 2024 - 2025 2025 - 2026 2026 - 2027 2027 - 2028 2028 - 2029 2029 - 2030 2030 -2031 2031 -2032 2032 - 2033 2033 - 2034 2034 - 2035 2035 - 2036 2036 - 2037 2037 - 2038 2038 - 2039 2039 - 2040 2040 - 2041 2041 - 2042
ROUTINE MAINTENANCE AND MONITORING COSTS PROJECTIONS 1
$1,062,706 $1,099,901 $1,138,398 $1,178,242 $1,219,480 $1,262,162 $1,306,338 $1,352,060 $1,399,382 $1,448,360 $1,499,053 $1,551,520 $1,605,823 $1,662,027 $1,720,198 $1,780,405 $1,842,719 $1,907,214 $1,973,966 $2,043,055 $2,114,562 $2,188,572 $2,265,172 $2,344,453 $2,426,509 $2,511,437 $2,599,337 $2,690,314 $2,784,475 $2,881,932 $2,982,800
$1,219,903 $1,262,600 $1,306,791 $1,352,529 $1,399,868 $1,448,863 $1,499,573 $1,552,058 $1,606,380 $1,662,603 $1,720,794 $1,781,022 $1,843,358 $1,717,088 $1,777,186 $1,839,388 $1,903,767 $1,970,399 $1,631,490 $1,688,592 $1,747,693 $1,808,862 $1,872,172 $1,356,389 $1,403,863 $1,452,998 $1,503,853 $1,556,488 $966,579 $1,000,409 $1,035,423
$119,000 $123,165 $127,476 $131,938 $136,556 $141,335 $146,282 $151,402 $156,701 $162,186 $167,863 $173,738 $179,819 $186,113 $192,627 $199,369 $206,347 $213,569 $221,044 $228,781 $236,788 $245,076 $253,654 $262,532 $271,721 $281,231 $291,074 $301,262 $311,806 $322,719 $334,014
$119,000 $123,165 $127,476 $131,938 $136,556 $141,335 $146,282 $151,402 $156,701 $162,186 $167,863 $173,738 $179,819 $186,113 $192,627 $199,369 $206,347 $213,569 $221,044 $228,781 $236,788 $245,076 $253,654 $262,532 $271,721 $281,231 $291,074 $301,262 $311,806 $322,719 $334,014
$138,400 $143,244 $148,258 $153,447 $158,818 $164,377 $170,130 $176,085 $182,248 $188,627 $195,229 $202,062 $209,134 $216,454 $224,030 $231,871 $239,986 $248,386 $257,080 $266,078 $275,391 $285,030 $295,006 $305,331 $316,018 $327,079 $338,527 $350,375 $362,638 $375,330 $388,467
$9,700 $10,040 $10,391 $10,755 $11,131 $11,521 $11,924 $12,341 $12,773 $13,220 $13,683 $14,162 $14,658 $15,171 $15,702 $16,252 $16,821 $17,410 $18,019 $18,650 $19,303 $19,979 $20,678 $21,402 $22,151 $22,926 $23,728 $24,558 $25,418 $26,308 $27,229
$167,328 $173,184 $179,245 $185,519 $192,012 $198,732 $205,688 $212,887 $220,338 $228,050 $236,032 $244,293 $252,843 $261,693 $270,852 $280,332 $290,144 $300,299 $310,809 $321,687 $332,946 $344,599 $356,660 $369,143 $382,063 $395,435 $409,275 $423,600 $438,426 $453,771 $469,653
--------------$655,571 $678,516 $702,264 $726,843 $601,826 $622,890 $644,691 $667,255 $690,609 $500,346 $517,858 $535,983 $554,742 $574,158 $356,552 $369,031 $381,947
--$25,000 $25,875 $26,781 $27,718 $28,688 $29,692 $30,731 $31,807 $32,920 $34,072 $35,265 $36,499 $37,776 $39,098 $40,466 $41,882 $43,348 $44,865 $46,435 $48,060 $49,742 $51,483 $53,285 $55,150 $57,080 $59,078 $61,146 $63,286 $65,501
----------------------$17,600 $68,640 $83,199 $100,846 $122,235 $148,161 $179,586 $217,676 $264,000
----$118,769 ----$141,060 ----$167,535 ----$198,979 ----------$290,503
-$5,740 $5,941 $6,149 $6,364 $6,587 $6,818 $7,057 $7,304 $7,560 $7,825 $8,099 $8,382 $8,675 $8,979 $9,293 $9,618 $9,955 $10,303 $10,664 $11,037 $11,423 $11,823 $12,237 $12,665 $13,108 $13,567 $14,042 $14,533 $15,042 $15,568
--$57,500 $59,513 $61,596 $63,752 $65,983 $68,292 $70,682 $73,156 $75,716 $78,366 $81,109 $83,948 $86,886 $89,927 $93,074 $96,332 $99,704 $103,194 $106,806 $110,544 $114,413 $118,417 $122,562 $126,852 $131,292 $135,887 $140,643 $145,566 $150,661
$2,836,037 $2,941,039 $3,126,476 $3,235,905 $3,467,931 $3,466,382 $3,587,706 $3,713,276 $3,843,240 $4,118,815 $4,116,978 $4,261,072 $4,410,210 $4,373,781 $5,349,969 $5,363,820 $5,551,553 $5,745,858 $5,388,633 $5,776,216 $5,772,440 $5,974,476 $6,201,183 $5,672,905 $5,883,615 $6,104,276 $6,335,784 $6,579,185 $5,953,608 $6,193,789 $6,739,780
REPLACEMENT/CAPITAL IMPROVEMENT COSTS PROJECTIONS 14
Flares --$937,221 ----------------------------
Microturbines ----------$1,145,128 --------------------
-------------------------$9,423,442 -----
---------------$4,887,398 ---------------
Additional GW
Extraction Wells to
Accommodate Sewer
Pipeline Liner System 16
--$188,403 ----------------------------
Retrofit of the
Amphitheater LFG
System 17
--------------$812,941 ----------------
-$70,604 -----------------------------
--$159,754 ------$79,665 -$212,113 --$139,881 ----$291,095 -------$351,110 -$660,628 -
$0 $70,604 $1,285,378 $0 $0 $0 $0 $0 $0 $79,665 $1,145,128 $212,113 $0 $0 $952,822 $4,887,398 $0 $0 $0 $291,095 $0 $0 $0 $0 $0 $9,423,442 $0 $351,110 $0 $660,628 $0
$2,836,037 $3,011,643 $4,411,854 $3,235,905 $3,467,931 $3,466,382 $3,587,706 $3,713,276 $3,843,240 $4,198,480 $5,262,106 $4,473,185 $4,410,210 $4,373,781 $6,302,791 $10,251,218 $5,551,553 $5,745,858 $5,388,633 $6,067,311 $5,772,440 $5,974,476 $6,201,183 $5,672,905 $5,883,615 $15,527,718 $6,335,784 $6,930,295 $5,953,608 $6,854,417 $6,739,780
Notes:
1
2
3
4
2012 Budget allocation is referenced from the Adopted Capital Improvement Projects, FY 2011-12 within the August 29, 2011City of Mountain View Memorandum to the City Council regarding Adopted Fiscal Year 2011-12 Capital Improvement Program (Appendix C).
Includes some road and pathway repairs.
(notes continued on next page)
2012 Budget allocation is referenced from the Revised Budgets (Non-Adjusted) Landfill and Eng 2008 thru 2012 (Appendix C).
Sailing Lake Water Supply
System
Expected Events
One-Time Improvements -
Compliance with draft 2012
IGP
Construction Equipment
Subtotal (Replacement)
TOTAL POST-CLOSURE
MAINTENANCE COSTS 18
Budget amounts shown for 2012 are approved budget amounts. A 3.5% inflation factor is applied for years 2013 to 2042 to arrive at a projected budget amount.
Shoreline Boulevard
Reconstruction 15
Shoreline Pathway, Roadway,
Parking Improvements (CIP
Fund) 3,5
Shoreline Infrastructure
Maintenance (CIP Fund) 3,6
Sailing Lake Water Supply
System Operations &
Maintenance 7
Amphitheatre O&M of Final
Cover, GCCS, LCRS 8,12
Repair of Synthetic Turf and
Other Infrastructure due to
Settlement in the Athletic
Fields 9
Fuel Supplement for Flares 10
Shoreline Boulevard
Maintenance
Additional Annual Cost for
Compliance with draft 2012
IGP 11
Burrowing Owl Specialist 13
Subtotal (Routine
Maint./Mon.)
Landfill Gas System
Landfill Gas/Leachate System
Repairs (CIP Fund) 3
BUDGET
Budget Item
Landfill Engineering 2
Landfill Operations 2,12
Shoreline Cap
Maintenance/Repairs (CIP
Fund) 3,4
TABLE ES-1 (Continued)
CITY OF MOUNTAIN VIEW
SHORELINE LANDFILL MASTER PLAN
POST-CLOSURE MAINTENANCE COSTS
BUDGET PROJECTIONS TO 2042
5
6
7
8
9
10
11
12
13
14
15
16
17
18 Estimated costs for unexpected increases in groundwater monitoring costs and for catastrophic events (e.g. earthquake, flood) are not included in this table due to the uncertainty of the occurrences of these types of events. City staff will bring a proposal forward to the City Council with recommended options
for addressing these potential contingency costs. Additionally, pursuant to the schedule in California Code of Regulations, Title 27 (27 CCR) the non-water release corrective action plan, cost estimates, and financial assurance for the MVSL will be required to be developed and submitted to CalRecycle by July
1, 2013. The financial assurance regulations for corrective action cost estimates under the 27CCR, Sections 22220 and 22221 requires operators of disposal facilities to demonstrate the availability of financial resources to conduct corrective action activities for all known or reasonably foreseeable releases
from disposal facilities. Regulations in 27 CCR require financial assurance liability based on the highest cost estimate of all the causal events. The City will need to determine the best financial assurance mechanism to create in accordance with City policy. Such funding obligations are not reflected in this
table.
Assumes that 50% of the total cost ($115,000/year) to maintain a burrowing owl specialist full-time comes from the landfill operations fund and the remaining 50% comes from the general fund.
Costs beyond 2012 are adjusted using a San Francisco Area Engineering News Record Construction Cost Index of 3.2%.
Total reconstruction cost was calculated by using a per linear feet reconstruction cost (total project cost of Project 04-38 [$2,682,000 as stated in the council report agenda dated June 19, 2007, attached] divided by the total linear feet of Shoreline Boulevard that was reconstructed [3,500 linear feet]) and
multiplying it by the total linear feet of Shoreline Boulevard (assumed to be approximately 4,780 linear feet based on the site's topography map, from the Permanente Creek bridge to the gate house). Assumes a 30-year reconstruction/replacement period.
Assumes that two additional groundwater extraction wells will be installed in 2014 (see Section 3.3.4 for details).
Assumes that 45 (2/3 of the existing wells) vertical wells will require replacement (including headers and laterals).
Due to the progressive decommissioning of the GCCS, it is expected that beginning in 2025, costs will drop as follows; 10% in 2025, 20% in 2030, 30% in 2035, and 40% in 2040.
(notes continued from previous page)
Assumes that approximately 80% ($138,400) of the total CIP funding allocation ($173,000) for this budget item is for landfill related improvements and 20% of the total funding for this line item is for non-landfill improvements.
The total CIP funding allocation is $216,000 or approximately $48,700 after separating the sailing lake water supply system operations and maintenance. Assumes that approximately 20% ($9,700) of the total CIP funding allocation ($48,700) for this budget item is for landfill related improvements and 80%
of the total funding for this line item is for non-landfill improvements.
Budget allocation is referenced from the Shoreline Lake Water Supply System Operation and Maintenance - Index 225596 Budget 2006-2012 Table (Appendix C).
Assumes that the City of Mountain View will take over the maintenance of the landfill related components of the amphitheatre when the lease agreement with Live Nation ends on December 31, 2025.
Assumes that the City of Mountain View will incur the operation and maintenance cost of the additional landfill related components of the athletic field (i.e. repair of synthetic turf/pavement (e.g. curb and gutter)/subdrains due to settlement) when the facility opens in the year 2014 . The cost to maintain the
final cover, landfill gas collection/control system, and existing drainage structures that are currently located within the site of the athletic field is assumed to be currently funded by the City's existing landfill operations/engineering budget and CIP funding, therefore, this cost is not included in this budget item.
Assumes that all other facilities maintenance activities (e.g. non-landfill related synthetic turf repair and periodic synthetic turf replacement, building maintenance) are included in a separate City recreations fund.
Assumes that the quality and quantity of methane gas will decrease beyond the threshold to efficiently operate the flares without fuel supplement in the year 2034 and that the City of Mountain View will have to start incurring the fuel supplement costs. Assumes $50/day in 2034 with an increase to
approximately $750/day in 2042.
Assumes that the City will incur additional annual cost to comply with the draft 2012 Industrial General Permit (IGP) for storm water, which is assumed to be effective in 2013.
Mountain View SLMP
(J:\Mountain View, City of\2012-0057 Shoreline Landfill Master Plan\Reports\Tables\Table 1 Total Expense Costs Projections.xlsx ES-1; 1/7/2013)TETRA TECH BAS