2024-04-23; City Council; 06; Adaptive Management Plan for the South Carlsbad Boulevard Climate Adaptation Project

CA Review GH
Meeting Date: April 23, 2024
To: Mayor and City Council
From: Scott Chadwick, City Manager
Staff Contact: Katie Hentrich, Senior Program Manager
[email protected], 442-339-2623
Tom Frank, Transportation Director/City Engineer
[email protected], 442-339-2766
Subject: Adaptive Management Plan for the South Carlsbad Boulevard Climate Adaptation Project
Districts: 2, 3
Reco
mmended Actio n
Receive a report on how a 1-mile segment of south Carlsbad Boulevard could be managed to protect people, the environment and infrastructure from the effects of anticipated sea level rise.

Exec
utive Summary
Traffic safety and environmental sustainability are top City Council priorities. A California State Coastal Conservancy
1 grant provided the City of Carlsbad with an opportunity to advance both priorities by redesigning a section of Carlsbad Boulevard prone to flooding and vulnerable to future sea level rise. The grant was intended to demonstrate how coastal cities could move and adapt infrastructure based on the latest sea level rise modeling.

The 1-mile segment of southbound Carlsbad Boulevard addressed by the grant, between Manzano Drive and Island Way, is located within the project area of a longer-term city project from Manzano Drive to the city’s southern border at La Costa Avenue. That larger project envisions moving the southbound lanes of Carlsbad Boulevard to the east and repurposing about 60 acres of coastal land for recreation, trails and other uses. 1 The Coastal Conservancy is a state agency established in 1976 to protect and improve natural lands and waterways, help people access and enjoy the outdoors, and sustain local economies along the length of California’s coast.

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The grant project for the 1-mile segment included two main components:
• Road plan: A conceptual design showing how the road could be moved away from the immediate coastline, where modeling shows the sea level will rise in the next 96 years. • Adaptive management plan: A management plan that would be used to inform how and when infrastructure should be moved eastward.

On June 20, 2023, city staff presented the City Council with three options for how the road could be reconfigured to move infrastructure away from the coast. The City Council voted to approve one of the options to proceed to the next stage of design, in compliance with the grant requirements.

At that meeting, the City Council also directed staff to return to the Beach Preservation Commission and the City Council to discuss options for the management plan. One option is to “retreat now,” meaning make all the changes all at once. The other is to use a phased approach in which changes would be made incrementally over the next 96 years, as needed.

The grant project was completed on Feb. 28, 2024. The next steps include initiating the studies needed to formulate a final scope of work and a funding strategy for the capital improvement project from Manzano Drive to Island Way to address the work with the related coastal development permit. Additionally, staff will continue to pursue related grant funding opportunities.

Explanation & Analysis
Flooding in project area
South Carlsbad Boulevard has a history of erosion and instability near Las Encinas Creek. The city has had to close this section of the roadway, including at the Las Encinas Bridge, during coastal storms, rending this part of the coastline inaccessible. This poses a safety concern because emergency vehicles have to take a longer route to get to nearby homes and businesses and is an inconvenience to those traveling south along the coast.

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Item #6 Page 2 of 41
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- South Carlsbad Coastline Project /
South Carlsbad Boulevard
Climate Adaptation Project
Carlsbad Blvd

In response to flooding, the city extended rock barricades twice under an emergency permit approved by the California Coastal Commission. Most recently in 2016, the city placed rock shoreline protection during periods of high surf that led to partial closure of the roadway and emergency repair work. The California Coastal Commission issued a coastal development permit on Dec. 29, 2015, which was extended to March 2024.

As a condition of the emergency permit, the Coastal Commission required the city to pursue a more permanent solution. The California Coastal Conservancy grant project provided the first step toward developing that solution.

Staff submitted an amendment request to the California Coastal Commission on March 14, 2024, for a five-year extension to pursue additional grants and studies to complete the design, permitting and construction of a lasting solution. The additional studies include a geotechnical report, biological survey, topographical analysis, refined conceptual designs, cost estimates based on the additional studies, and an options analysis including costs and benefits. This additional analysis is critical in formulating a recommended approach and final project scope of work. If the extension is not approved and the rock barrier is removed prior to the realignment of the infrastructure, this segment of Carlsbad Boulevard would likely experience heavy erosions and would need to be closed once critically damaged.

Existing p
olicies and plans
The city has been studying and planning for future sea level rise for many years. Specifically, the South Carlsbad Boulevard Climate Adaptation Project builds on data and guidance in three documents previously approved by the City Council:

1. Sea Level Rise Vulnerability Assessment
This report, completed in 2017, identifies areas in Carlsbad on the coast and around lagoons that are most susceptible to damage from an increase in the sea level. • The report projects potential hazards over two timeframes – through 2050 and 2100. It analyzes the relative risks and rates the vulnerability of different areas. • The report also describes possible adaptation strategies, which are ways to help address future coastal flooding and erosion.

The project area is identified in the report as an area that may be extremely vulnerable to coastal flooding.

2. General Plan Safety Element
In January 2024, the City Council approved an update to the General Plan’s Safety Element, which identifies community safety risks and establishes goals and policies to protect the public from those risks. The Safety Element sets forth several goals related to safety along the coast:
• Give priority to non-structural shoreline protection options and limit or prohibit hard shoreline protective devices (Goal 6-P.15)
• Require removal or relocation of structures away from sea level rise hazards if public health and safety risks exist, if essential services can no longer be maintained, if the structures are no longer on private property due to migration of the public trust boundary, or if the development requires new or augmented shoreline protective devices that would not otherwise be permitted (Goal 6- P.16)
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3. Declaration of a climate emergency
In September 2021, the City Council declared a climate emergency, which is part of a worldwide effort to raise awareness of the impacts of climate change and instill a greater sense of urgency to address it. The declaration affirms the city’s current sustainability efforts and ongoing commitment to protecting the environment stating, “any meaningful action that stands a chance of success at mitigating and adapting to the effects of climate change requires mobilization without delay.”
What the grant project included
City staff completed the following work products as part of the grant project:
• A conceptual design of the realigned roadway (Exhibit 1) • An adaptive management plan that includes a decision framework for when to move segments of south Carlsbad Boulevard based on the anticipated coastal hazards caused by sea level rise (Exhibit 2)
• A cliff erosion assessment
• A habitat restoration analysis of the Las Encinas Creek area The cliff erosion assessment and the habitat restoration analysis helped inform the road design and management plan.

Conceptual design
City staff developed conceptual designs, which included rough layouts and traffic analysis information to show how southbound Carlsbad Boulevard from Manzano Drive to Island Way could be moved to the east. The designs were developed to meet the following goals:
• Move and protect infrastructure from hazards caused by sea level rise • Provide a safe and efficient roadway for all modes of travel • Promote walking, biking and other forms of active transportation • Slow down traffic along the coastline for safety
On June 20, 2023, city staff presented three road options to the City Council for consideration. •
The City Council selected a two-vehicle lane road with roundabouts. • This design complies with the California Complete Streets Act and local policies that were previously approved by the City Council, including the General Plan’s Mobility Element, Sustainable Mobility Plan and Climate Action Plan.

Management plan
In addition to a road design that moves infrastructure away from the coast, the grant funded the development of a plan for how and when these changes could be made.

A future step will include a policy decision regarding two options presented in the adaptive management plan, either:

Retreat now
This option would move infrastructure away from the coast all at once, rather than incrementally, which could enhance the width of the beach at the Las Encinas Creek outfall segment.

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Phased adaptation
The phased adaptation option would move the southbound Carlsbad Boulevard vehicle lane to the east and repurpose the old road for walking and biking paths to be used as long as it is safe to do so.

The walking and biking paths would be moved to the east as needed based on flooding, erosion and other signs of sea level rise over the next 96 years.

Project segments
The management plan splits the project area into four segments. For each segment, the plan includes:
• Types of physical events, or “triggers,” such as cliff erosion or flooding and the frequency that would signal the time to move infrastructure landward • Lead times needed for these actions
• Observational data to collect to track the proposed triggers • Frequency of data collection
Each segment has unique characteristics that would determine when infrastructure would need to be relocated.

Palomar Airport Road segment
The main vulnerability of concern in this segment is cliff erosion. The phased adaption plan would narrow and eventually relocate the proposed trails over time with the goal of keeping this mobility corridor in close, but safe, distance from the ocean to maximize coastal views from the trails.

The conditions described below would trigger the need to proceed with moving infrastructure to the east.

Trigger Action Lead time
Pedestrian walkway 15
feet from cliff edge
Begin planning and implementation of corridor
shared by bikes and pedestrians (similar to area like
the Coastal Rail Trail)
3-5 years
Bikeway 15 feet from
cliff edge
Begin planning and implementation of relocating
the trail inland or demolish corridor and redirect
bikes and pedestrians to the sidewalk and bike lane
next to vehicle lane
3-7 years
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Palomar Airport Road Solamar Drive Las Encinas Creek Island Way

Relocated bikeway 15
feet from cliff edge
Begin planning and implementation of demolishing
corridor and redirect bikes and pedestrians to the
sidewalk and bike lane next to vehicle lane
3-5 years
Solamar Drive segment
The main vulnerability of concern in the Solamar Drive segment is also cliff erosion. The phased adaptation plan would focus on utilizing the roundabout as long as feasible with options to explore increased access and stabilization (i.e. erosion control) alternatives as well as changing the roundabout to a signal to regain some space.

Trigger Action Lead time
Class 1 path 15 feet
from cliff edge
Begin planning and implementation transitioning
the roundabout to a single lane with traffic signal
5-10 years

Las Encinas Creek segment
In the Las Encinas Creek segment, flooding at the “dip in the road” at the mouth of Las Encinas Creek is the primary concern. Flooding in this portion of the segment is already affecting the roadway during coastal storms.

The image below shows what this area would look like under retreat now, once all the changes had been made, including totally removing the southbound road, as well as the rock barriers (called a “revetment”) along the beach.

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Legend
r--::;3 Habitat Enh.inceme nt
L-...:.'.l Area(HEA)

• The changes would also include habitat restoration and a new bridge over Las Encinas Creek to accommodate north and southbound traffic, including walking and biking paths.
• The changes could create conditions that support the formation of an approximately 700-foot pocket beach with sand, as well as a sand dune and dune wetlands. • The Las Encinas Creek estuary and beach would be allowed to evolve naturally and without major maintenance after the project is constructed.

A phased approach to this segment could be based on the following conditions:

Trigger Action Lead time
Rock revetment needs
significant repair that
exceeds $5 million
Begin planning and implementation of
demolishing corridor and redirecting pedestrians
and bikes to sidewalk and bike lane next to
vehicle lane
5-10 years
The corridor is
flooded 10 times in
one year
Begin planning and implementation of
demolishing corridor and redirecting pedestrians
and bikes to sidewalk and bike lane next to
vehicle lane
5-10 years

Section 4.3.3.2 of the report includes a preliminary comparison of the phased adaptation and retreat now – make all the changes at once – options. Further analysis is needed before staff can recommend an approach on the retreat now or phased adaptation options. This analysis would include a geotechnical report, biological survey, topographical analysis, refined conceptual designs, cost estimates based on the additional studies, and an options analysis including costs and benefits.

Island Way segment

Trigger Action Lead time
No trigger identified since relocated
infrastructure outside of the coastal
hazard zone

N/A N/A

A caveat
Carlsbad’s adaptive management plan is one of only a few plans created for coastal cities in the State of California. The best practices for creating such a management plan will likely evolve, providing additional guidance in the future.

Community Engagement
Because the grant project was technical in nature and the end product would be conceptual only, the city engaged property owners, businesses and residents in the immediate study area in a discussion about road design options.

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Item #6 Page 7 of 41

City staff focused the adaptive management plan engagement efforts on public agencies including the California Coastal Commission, California State Parks and Encina Wastewater Authority. Comments included:
• Adding in a buffer for the cliff erosion trigger
• Using more objective metrics to monitor flooding and overtopping • Making triggers clearer and more accountable
• Updating the adaptive pathways visuals to make them easier to understand • Considering future financial needs related to adaptation Staff incorporated these edits into the adaptive management plan included in Exhibit 2.

Staff presented the adaptive management plan to the Beach Preservation Commission on April 2, 2024. The Beach Preservation Commission voted unanimously to recommend the retreat now option to the City Council.

Staff recommend broader public engagement to coincide with future phases of this project, if it were to move forward.

Fiscal Analysis
The total grant amount was $533,175.

Staff submitted a request to the Coastal State Conservancy for $200,000 in additional funding technical analyses, including geotechnical, biological and topographical studies in February 2023. The request was denied due to a lack of state funds.

Staff plan to request funds during the fiscal year 2024-25 budget development process to initiate the studies needed to formulate a final scope of work and a funding strategy for the capital improvement project from Manzano Drive to Island Way to address the work with the related coastal development permit. Additionally, staff will continue to pursue related grant funding opportunities.

Next Steps
The grant focused on a conceptual design. Completing the preliminary design and permitting for this project by 2028 is a key task in the City Council’s 5-Year Strategic Plan. To meet this deadline and move this design forward to implementation, the following steps would be needed:
• Identification and securing of funding source(s)
• Procurement of design, environmental studies and options analysis including costs and benefits
• Public engagement to identify ideas, preferences and concerns related to how land could be repurposed
• Design of beach access points and other recreational areas • Further technical studies and options analysis to support final design • Engineering design beyond 30% through final design
• Environmental analysis, documentation and review
• Permitting
• Bidding
• Construction
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Another consideration when determining next steps is the status of the larger south Carlsbad Boulevard project, which extends to La Costa Avenue. The City Council may wish to consider changes to the 1-mile segment addressed in the grant project, from Manzano Drive to Island Way, in context with the entire south Carlsbad Boulevard corridor, which extends to La Costa Avenue.

The larger coastline corridor project is currently included in the city’s Capital Improvement Program, and initial community engagement has been completed. At this time, the City Council has not directed staff to proceed with the next steps, which would include preliminary design and engineering of the 3-mile corridor along with additional community engagement.

Environmental Evaluation
The California Environmental Quality Act, or CEQA, and its implementing regulations, the CEQA Guidelines, adopted by the Secretary of the California Natural Resources Agency, list classes of projects that have been determined not to have a significant effect on the environment and as a result are exempt from further environmental review under CEQA.

The City Planner has determined that this report is statutorily exempt from the requirements of CEQA pursuant to CEQA Guidelines sections 15262 (feasibility and planning studies) and 15378(b)(5), which exempts organizational or administrative activities of governments that will not result in direct or indirect physical changes in the environment. This organizational and administrative activity relates to results of a study to prepare an adaptation plan for a portion of a roadway segment in the city (South Carlsbad Boulevard Climate Adaptation Project). This general direction provided by the City Council does not have a legally binding effect on any possible future discretionary action. Public input received and technical information prepared during the planning process will be utilized in preparing a future environmental review document to support the South Carlsbad Boulevard Climate Adaptation Project.

Exhibits

1. Conceptual design of the two-lane road with roundabouts

2. Adaptive Management Plan
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CARLSBAD BLVD RDWY RESILENCY PLAN
ALTERNATIVE 2

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April 23, 2024
Item #6 Page 10 of 41
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1. GHD conceptual design developed from City of Carlsbad provided topography.

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April 23, 2024
Item #6 Page 11 of 41
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0 South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

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South Carlsbad Climate
Adaptation Project
Long-Term Master Plan / Adaptive
Management Plan
City of Carlsbad
28 February 2024
Exhibit 2
April 23, 2024
Item #6 Page 12 of 41
0 --

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project i

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

April 23, 2024
Item #6 Page 13 of 41

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project ii

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan Contents

1. Introduction 1

2. Proposed Project 3

3. Coastal Hazards 5

3.1 Cliff Erosion 5

3.2 Coastal Flooding 6

4. Adaptive Management Plan 8

4.1 Project Segments 8

4.2 Selected Metrics & Thresholds 9

4.2.1 Cliff Erosion 9

4.2.2 Coastal Flooding 10

4.2.3 Armoring Integrity 10

4.3 Adaptation Pathways 11

4.3.1 Palomar Airport Road Segment 11

4.3.2 Solamar Drive Segment 14

4.3.3 Las Encinas Creek Segment 17

4.3.3.1 Adaptive Pathways 19

4.3.3.2 Trade-offs between Phased Adaptation and Retreat Now Options 21

4.3.4 Island Way Segment 22

5. Monitoring Framework 23

6. Conclusions 25

April 23, 2024
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project iii

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan Table index
Table 1. Summary of Key Advantages, Disadvantages and Trade-offs between the Phased Adaptation and Retreat Now Options 21
Table 2. Proposed Monitoring Activities to Inform Proposed Adaptive Pathways 23

Figure index
Figure 1. South Carlsbad Boulevard Climate Adaptation Project Area 2 Figure 2. Preferred Project 3
Figure 3. Typical Roadway and Bridge Cross Sections 3
Figure 4. Typical Mobility Corridor Section 4
Figure 5. Modeled Average Cliff Retreat Distance in Tabular Format and Graphical Format 6 Figure 6. Cliff Hazards in the Project Area with Sea Level Rise Projections for 2070 and 2120 6 Figure 7. Coastal Flood Hazards in the Project Area – Entire Project area and Las Encinas Creek using CoSMoS 3.0 with 2050 – 3.3-ft SLR and 2100 – 6.6-ft SLR 7 Figure 8. Adaptive Management Plan Project Segments 8
Figure 9. Diagram of Cliff Erosion Illustrating Specific Terms 9 Figure 10. Increments of 10-ft Setbacks Across the SLR Projections of Cliff Top Retreat 10 Figure 11. Adaptive Pathway for Palomar Airport Road Segment 11 Figure 12. Phase 0 (as-built condition) of Palomar Airport Road Segment 12 Figure 13. Palomar Airport Road Segment – Adaptive Phase 1 12 Figure 14. Palomar Airport Road Segment – Adaptive Phase 2 13 Figure 15. Palomar Airport Road Segment – Adaptive Phase 3 13 Figure 16. Proposed Adaptive Pathways for Solamar Drive Segment 14 Figure 17. Phase 0 (as-built condition) of Solamar Drive Segment 15 Figure 18. Solamar Drive Segment – Option 1 16
Figure 19. Current Intersection at Solamar Drive and Informal Beach Accessways Compared with a Nearby Example of a Formalized Staircase at South Carlsbad State Beach as an example to inform Option 2 16
Figure 20. Phase 0 in the Las Encinas Segment overlaid with flood and cliff erosion hazards. 18 Figure 21. Phase 0 (as-built conditions) for the Phased Retreat Alternative 18 Figure 22. Phase 0 (as-built conditions) for the Retreat Now Alternative 19 Figure 23. Adaptive Pathways for Las Encinas Creek Segment 20 Figure 24. Phase 0 (as-built condition) of the Island Way Segment 22 Photo index
Photo 1. Cliff Erosion within the Project Area near Palomar Airport Road and Solamar Drive 5 Photo 2. Coastal Flooding within the Project Area 7

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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 1

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

1. Introduction
Traffic safety and environmental sustainability are top priorities for the City of Carlsbad. A California State Coastal Conservancy grant provided the city with an opportunity to advance both priorities by redesigning a section of Carlsbad Boulevard prone to flooding and other coastal hazards. The grant is intended to demonstrate how coastal cities can move and adapt infrastructure based on the latest modeling of sea level rise (SLR).

The South Carlsbad Climate Adaptation Project seeks to move the southbound lanes of Carlsbad Boulevard from Manzano Drive to Island Way to the east and repurpose city-owned land for other public uses and environmental restoration areas. The uses for this space and the future alignment of the road are focused on building resilience into the corridor with consideration of current and projected future coastal hazards; specifically, SLR and cliff/shoreline retreat over the next 100 years.

To meet these objectives, the proposed project involves a complete street to include coastal trails, bikeways and sidewalks that provide access to the coastline and community vision spaces (Figure 1). Complete streets are streets that are safe and inviting for all users, including people of all ages and abilities, regardless of whether they are driving, biking, or walking. Additionally, the project involves the use of nature-based design techniques and achieving habitat restoration where viable and appropriate – such as within the Las Encinas Creek area.

This Long-term Master Plan / Adaptive Management Plan (plan) was prepared to inform the management of the project elements over time in what is envisioned to be a phased plan in response to future coastal hazards. The plan presents physical thresholds for management actions (such as moving infrastructure elements landward) as coastal hazards impact and make coastal spaces unsafe for the public to recreate in.

It is important to note that the project design is still in the conceptual engineering phase (30% design) at the time of this plan’s development. This plan may require revision during the final engineering and environmental phase to reflect any design changes that emerge.

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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 2

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 1. South Carlsbad Boulevard Climate Adaptation Project Area April 23, 2024
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 3

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

2. Proposed Project
A preferred option was selected by the Carlsbad City Council on June 20, 2023, that balances the project goals of improving mobility and coastal access, while reducing the risk of infrastructure to hazards and increasing resilience to the corridor by moving infrastructure inland and out of coastal hazard zones. The primary elements of the project are to: 1) create a complete street along the existing northbound Carlsbad Blvd alignment; 2) enhance traffic circulation and safety through three roundabouts; 3) restore habitat and promote wildlife connectivity in Las Encinas Creek through construction of a 500’ span bridge along new complete street; and 4) increase mobility through creation of a Class 1 bikeway facility and complete street elements on Carlsbad Blvd. The proposed project and primary components are shown in plan and section in Figures 2 through 4. Details on adaptation considerations for specific assets along the project area are further described in this report in Section 4.3.

Figure 2. Preferred Project

Figure 3. Typical Roadway (above) and Bridge (below) Cross Section s

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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 4

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 4. Typical Mobility Corridor Section

April 23, 2024
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2' 10'
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-
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 5

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

3. Coastal Hazards
Coastal flooding and cliff erosion are the primary hazards that present vulnerabilities to the project site. These coastal hazards have required temporary roadway closures and the installation of rock revetment along 1,300 LF of southbound Carlsbad Blvd. Assessment of future coastal hazards driven by climate change and SLR indicate that both flooding and erosion will increase over time, causing additional impacts to access and usability of infrastructure without the interventions proposed by the project and presented in this plan. The impacts from these hazards are the focus of the adaptive management principles identified in this plan. This report summarizes information on hazards with detailed analysis available in the Cliff Erosion Assessment Report and Coastal Hazards Memorandum.

3.1 Cliff Erosion
Currently, cliff erosion presents a significant hazard across the project area. Episodic cliff failure events have occurred within the project area which have led to substantial erosion (Photo 1). To understand the existing and projected future cliff hazards in the project area, Scripps Institution of Oceanography (SIO) conducted a study of cliff erosion. This study assessed existing conditions, developed historic retreat rates, and projected cliff positions with SLR rates consistent with the Ocean Protection Council (OPC) 2018 medium-high scenario. This effort was undertaken by using four cliff evolution models and hundreds of model runs. All four models assumed erosion is primarily driven by wave action. It is important to note that other erosive processes, such as rainfall and groundwater, were not explicitly modeled though are generally captured in the historic retreat rates used as a baseline input for the models.

Photo 1. Cliff Erosion within the Project Area near Palomar Airport Road (left) and Solamar Drive (right) Source: Hayne Palmour IV (left), Sean Williams (right)
To derive retreat rates and corresponding cliff edge positions from the SIO model results, statistics (i.e., mean, median, percentiles, max/min) were calculated for each model run corresponding to the years of interest (2030, 2050, 2070, 2100). The SIO study did not extend beyond 2100, thus projections of cliff retreat were forecasted to a line of best fit to estimate year 2120. A spatial representative of these projected cliff edge positions (i.e., cliff hazard zones) was created using the average distance of each model run for the years 2070 and 2120. These results are presented graphically in Figure 5 with the statistical mean (i.e., average) projections of cliff retreat distances from the baseline cliff edge highlighted. A cliff erosion hazard zone was created from the results of the SIO study and is overlain on the project site in Figure 6.

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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 6

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 5. Modeled Average Cliff Retreat Distance in Tabular Format (left) and Graphical Format (right) (Derived from: SIO 2022)

Figure 6. Cliff Hazards in the Project Area with Sea Level Rise Projections for 2070 and 2120

3.2 Coastal Flooding
Coastal flooding is when water floods (short duration standing water) or inundates (long duration standing water) over typically dry land as a result of tides and waves. Coastal flooding of low-lying shorelines will increase in frequency and severity as sea levels rise. Coastal flooding was assessed within the project area using USGS’s CoSMoS 3.0 under the year 2050 (3.3-ft SLR scenario) and the year 2100 (6.6-ft SLR scenario). Flood hazards are focused along the low-lying areas around Las Encinas Creek (Figure 7). This finding is consistent with existing conditions, as the roadway currently experiences overtopping and closures at this location during extreme waves coincident with high tide events (Photo 2).

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Time
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2100
2120*
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 7

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Photo 2. Coastal Flooding within the Project Area
(source: City of Carlsbad)

Figure 7. Coastal Flood Hazards in the Project Area – Entire Project area (top) and Las Encinas Creek (bottom) using CoSMoS 3.0 with 2050 – 3.3-ft SLR (light blue) and 2100 – 6.6-ft SLR (dark blue) April 23, 2024
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Y••• 2050 Flood H=NI Zone J Vear 2100 Flood Hazard Zone

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 8

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

4. Adaptive Management Plan
An adaptive management approach will be used to inform project phasing over time with the overall goal of utilizing coastal spaces for public mobility and recreation until erosion or flooding make these spaces unsafe for the public to use. The Adaptive Management Plan presents adaptive pathways for each of the four project segments. These pathways outline a management and decision framework based on the coastal hazards that are anticipated to impact these areas over the next century. These pathways are comprised of monitoring thresholds for various metrics and management actions, which are described in detail in this section.

4.1 Project Segments
For the purposes of this Adaptive Management Plan, the project area was divided into four segments based on common vulnerabilities and how these infrastructure elements could be managed or adapted over time (Figure 8).

These segments are described as follows:

1. Palomar Airport Road Segment - Encompasses the area from Manzano Drive to Palomar Airport Road. This segment includes the Turnarounds Parking Lot, owned by State Parks.

2. Solamar Drive Segment - Centered on the intersection of Solamar Drive and South Carlsbad Blvd.

This intersection primarily serves as the main vehicular accessway for both the Solamar Community and Hilton Garden Inn. This segment also includes the City Parking Lot at Dave’s Beach and the RC Flyers Lot.

3. Las Encinas Creek Segment – Centered at the Las Encinas Creek and includes the North Ponto State Beach Day Use Parking Lot.

4. Island Way Segment - Southernmost end of the project area that encompasses an intersection at Island Way located inland from the South Carlsbad State Beach Campground.

Figure 8. Adaptive Management Plan Project Segments

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Palomar Airport Road
Segment
2070 Cliff Hazard Zone
' Island Way
Segment

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 9

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

4.2 Selected Metrics & Thresholds
The physical metrics and thresholds that were selected to prompt management actions in the project area are tied to the vulnerabilities and public use of the site. The three selected metrics include: cliff erosion, coastal flooding, and armoring integrity. Example thresholds that would prompt adaptive management action for each of these metrics are provided below:
• Cliff erosion (e.g., cliff erodes within several feet from edge of buffer to bikeway), • Coastal flooding (e.g., frequency of infrastructure flooding), and • Armoring integrity (e.g., cost of maintenance and repair), Site usability (by the public) was considered as a metric, however, to provide more objective thresholds it was not included as it was acknowledged that usability is captured indirectly across the other evaluated metrics. Further explanation of the thresholds selected for each of the metrics is provided in this section.

4.2.1 Cliff Erosion
The cliffs within the project area are vulnerable to erosion primarily as a result of waves attacking the cliff face, resulting in instability and surface runoff physically eroding the cliffs. For the purposes of evaluating metrics and setting thresholds for cliff erosion, both setback and buffer distances are being used. Cliff erosion setback refers to the distance from the top of cliff edge to a buffer. Recognizing potential safety concerns with infrastructure abutting a cliff edge, a cliff erosion buffer was applied as a threshold for management actions. Cliff erosion buffer refers to the distance from the setback to the asset (e.g., trail, roadway, etc.). These terms are illustrated schematically in Figure 9. By having the setback relate to the buffer allows additional time to plan management actions and safe use of the asset during that time.

Figure 9. Diagram of Cliff Erosion Illustrating Specific Terms

The setback distance from the buffer to the top of cliff edge was selected as the most appropriate threshold for cliff erosion. To determine the appropriate setback distance threshold, the approximate lead times for the various management actions was discussed with city staff. Lead times for the relocation or realignment of proposed project infrastructure (primarily the bikeway corridor) ranged from three to 10 years across the segments. When comparing this to the localized cliff erosion projections (Figure 10) using the average cliff erosion, the 10-ft setback is projected to provide roughly 10 years of lead time between 2030 and 2090, and roughly five to seven years of lead time at the end of the century. This lines up with the expectations for planning, design, fundraising, and implementation of the management actions identified. A buffer distance of five feet was determined appropriate to allow for time and space for safe usage of the asset during lead times and allows for the uncertainties in the magnitude of future bluff failures.

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Toe of Cliff
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Top of Cliff
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 10

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 10. Increments of 10-ft Setbacks Across the SLR Projections of Cliff Top Retreat

4.2.2 Coastal Flooding
Infrastructure in the project area is vulnerable to coastal flooding as a result of the proximity to the ocean and the elevation of infrastructure in the Las Encinas Creek vicinity. Coastal flooding of public spaces is a safety hazard and can result in road closures. This metric consists of partnering with SIO to use combined tidal conditions (predictions and observations) and wave modeling outputs to determine and validate flood elevation thresholds (e.g., minor, moderate, significant) and track flooding over time. For example, some overtopping of the roadway that does not impact vehicular use could be considered minor flooding, while overtopping sufficient to close the roadway to vehicles could be considered significant flooding. The exact elevation and oceanographic conditions to define flooding thresholds will be determined and validated at a later date. This information could be added to the existing SIO website
1 and linked through a city webpage. Automated emails to city staff could be generated in anticipation of forecasted flood events. This could be supplemented with site observations captured during extreme events with a field sheet and/or photos. Based upon the current frequency of extreme flooding and overtopping observations, a flooding threshold was defined as significant flooding of infrastructure 10 times in one year (i.e., 12-month period). Once validated, this method could be used to identify and track these flooding events.

4.2.3 Armoring Integrity
Should the beach undergo significant erosion, the rock revetment currently stabilizing southbound Carlsbad Blvd will be vulnerable to damage, which could impact its effectiveness at protecting the roadway. Damage has been documented previously during the 2015-2016 El Niño event, which compromised the integrity of the roadway and required emergency repairs and road closures. The need to extend or repair a significant segment of rock revetment (i.e., 500 LF) was selected as the threshold for armoring integrity. A financial threshold was also selected alongside this that would be met if repair, maintenance, or damage to the rock revetment exceeds $5M (2023 dollars) over two years (i.e., 24-month period).

1 An example of this system for Imperial Beach is available here: https://siocpg.ucsd.edu/data -products/coastal-focus-sites/ch-imperial- beach/ib-flood-forecast/
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 11

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

4.3 Adaptation Pathways
This section presents the adaptive pathways for each of the four project segments. Each of the pathways presented begins with Phase 0, which is considered the constructed project as currently proposed. The pathways then propose a number of future phases (i.e., management actions) and the thresholds/triggers that would cause the city to begin planning or implementing that future project phase. Understanding that each management action takes several years to implement, appropriate lead times were incorporated into the pathways. These lead times were derived from conversations with city staff and based upon analogous projects that have been implemented in the city.

4.3.1 Palomar Airport Road Segment
The main vulnerability of concern in this segment is cliff erosion. Four potential phases have been identified in the adaptive management plan for this segment (Figure 11). The overall theme of these phases is to narrow and eventually relocate the proposed trails over time with the goal of keeping this mobility corridor in close, but safe, distance from the ocean to maximize coastal views from the trails.

Figure 11. Adaptive Pathway for Palomar Airport Road Segment

The first line of infrastructure to be impacted by cliff erosion in the future would be the Class I pedestrian and bicycling trail in Phase 0, the as-built condition (Figure 12). The first adaptive phase is triggered once the cliff edge encroaches within 15’ of the proposed pedestrian trail, which includes the 5’ buffer. Phase 1 would then transition the pedestrian trail and bikeway into a shared use, Class 1 corridor (Figure 13). A combined pedestrian and bike corridor is a common configuration along the Coastal Rail Trail in North County San Diego, likely requiring a minimal learning curve for users as the pedestrians and bikes are merged into a single multi-use trail.

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Phase 0
Mobility Corridor
----•• I Phase 1
I Shared Class 1 Corridor
------ ••
Triggers
* Pedestrian walkway 15' from cliff edge.
* Bikeway 15' from cliff edge.
* Relocated bikeway 15' from cliff edge.

Distances include 5' buffer between setback and asset
I
I
I
OR
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Relocated Class 1 ....

I Phase 3
I Demolish Corridor & Redirect
1 Active Recreation to New Roadway •
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Begin planning & implementation of Phase 1 (lead time assumption 3-5 yrs*) Begin planning & implementation of Phase 2 (lead time assumption 3-7 yrs*) Begin planning & implementation of Phase 3 (lead time assumption 3-5 yrs*) *Assumes PEIR and available fundinq

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 12

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 12. Phase 0 (as-built condition) of Palomar Airport Road Segment

Figure 13. Palomar Airport Road Segment – Adaptive Phase 1 As the cliff top continues to erode and becomes within 15’ from the shared use trail, the next phase would relocate the trail landward in incremental steps (Phase 2) (Figure 14). The relocated trails could be developed with low cost and less permanent materials, allowing for lower expenditure and increased flexibility in the modifications. As an April 23, 2024
Item #6 Page 27 of 41
Palomar Airport Road Segment -
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 13

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan alternative phase to Phase 2 and/or when a trail would be infeasible, the city could decide to demolish the built trail corridor and redirect all active recreation to the proposed complete street roadway (Phase 3) (Figure 15).

Figure 14. Palomar Airport Road Segment – Adaptive Phase 2

Figure 15. Palomar Airport Road Segment – Adaptive Phase 3

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Phase 2 (Move Class 1 Corridor Landward
Incrementally)
2070 Cliff Hazard Zone
1111 2120 Cliff Hazard Zone
'Phase 3 (Demolish Mobility Corridor &
Redirect Active Recreation to New Roadway)
2070 Cliff Hazard Zone
- 2120 Cliff Hazard Zone

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 14

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan California State Parks owns and manages the land where informal parking occurs (commonly referred to as Turnarounds Lot). The city is actively coordinating with State Parks as part of this project; however, adaptation of the parking lot is not included in this Plan. Future phases of the project would provide more details on how the project interacts with this parking lot and how the parking lot could adapt over time.

4.3.2 Solamar Drive Segment
The main vulnerability of concern in the Solamar Drive Segment is cliff erosion. One phase with two potential options has been identified in the Adaptive Management Plan for this segment (Figure 16). The overall themes of these phases are to utilize the roundabout as long as feasible with options to explore increased access and stabilization (i.e. erosion control) alternatives as well as potentially changing the roundabout to a signal to regain some space.

Figure 16. Proposed Adaptive Pathways for Solamar Drive Segment The first line of infrastructure to be impacted by cliff erosion in the future would be the pedestrian trail in Phase 0, the as-built condition (Figure 17). The 2070 Cliff Hazard Zone encroaches on the proposed pedestrian trail. By 2120, the Cliff Hazard Zone is projected to encroach to the middle of the proposed roundabout (Figure 17).

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Triggers
Phase 0
Roundabout
t• Option 1
I Bidirectional Roadway w/ Signal
I
OR Option 2
I Evaluation of Stabilization and Access Alternatives
* Class 1 Bikeway 15' from cliff edge. Begin planning & implementati on of Phase 1 (lead time assumption 5-1 O yrs*) *Assumes PEIR and available funding Distance include 5' buffer between setback and asset

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 15

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 17. Phase 0 (as-built condition) of Solamar Drive Segment Phase 0 (as-built) positions infrastructure as landward as possible to achieve the project goals. As the cliff erodes and encroaches on the roundabout, two options are available that would address the functionality and usability of the intersection and coastal resources. Option 1 would involve the planning and implementation of transitioning the roundabout to a signalized intersection that requires less space (Figure 18). Concurrently or independently to Option 1, Option 2 would explore cliff stabilization and erosion control techniques coordinated with a new formalized vertical access point to achieve multiple benefits at this location. For example, a wooden staircase, similar to nearby accessways, that blends into the coastal cliff landscape could be feasible at this location. An example of a nearby formalized cliff access point that could inform Option 2 is provided in Figure 19. This accessway would relieve the need for multiple desire paths that currently exist along the cliff face where beachgoers and surfers traverse down the cliff to reach the shore. A multi-benefit solution exists to provide cliff stabilization and erosion protection at the landing of this accessway on the beach. The erosion protection would be designed to the minimum necessary footprint and the accessway designed to allow safe and appropriate width access to the beach while increasing the stability of the cliff fronting the roundabout at Solamar Drive. Both Option 1 and Option 2 could be pursued once the cliff erodes within a distance of 15’ from the vehicle lane which includes a 5’ buffer.

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Solamar Drive- Phase 0
2070 Cliff Hazard Zone
1111 2120 Cliff Hazard Zone

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South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 18. Solamar Drive Segment – Option 1

Figure 19. Current Intersection at Solamar Drive and Informal Beach Accessways (left) Compared with a Nearby Example of a Formalized Staircase at South Carlsbad State Beach (right) as an example to inform Option 2 .

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'Solamar Drive- Option 1
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 17

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

4.3.3 Las Encinas Creek Segment
The vulnerabilities in the Las Encinas Creek segment are cliff erosion and coastal flooding, with coastal flooding within the “dip in the road” along southbound Carlsbad Blvd at the mouth of Las Encinas Creek being the primary concern (Figure 20). Both of these vulnerabilities can be seen in present day as the cliffs have been protected by a rock revetment and the road periodically floods when waves overtop this structure.

Two different project options have been identified in this segment for how and when infrastructure is adapted each with different levels of hazard exposure. These options, called 1) Phased Adaptation and 2) Retreat Now, result in differing adaptation pathways. The Retreat Now option builds the project segment to the ultimate 2120 condition immediately, while the Phased Adaptation option repurposes the coastal infrastructure by creating a mobility corridor upon it in the as-built or Phase 0 of the project, to be used for as long as it is safe for the public. These options present key project decisions to be made by the City Council with input from the community and other affected stakeholders, and, ultimately, come down to how they would like to use these spaces now and in the future and what funding sources could be identified for improvements.

The Encina Wastewater Authority (EWA) provides wastewater treatment services to more than 379,000 residents in northwestern San Diego County with a facility located inland of the project area. The EWA has an existing ocean outfall that extends roughly 1.5 miles offshore to a water depth of 150ft. The outfall pipeline intersects southbound South Carlsbad Blvd approximately 200ft south from the centerline of the Las Encina Creek bridge (see callout for existing 48” EWA outfall in Figures 21 and 22). As-builts indicate that the pipeline is approximately 5ft below the current grade of the roadway. All adaptation options for the roadway will need to account for the protection of the existing EWA outfall pipeline. Further coordination with EWA will be needed during the next phase of this project (i.e., final engineering) to refine protection or accommodation options. as this infrastructure is outside of the City’s sole jurisdictional authority.

The two adaptation options being considered for the Las Encinas Creek Segment are further described below:
- Phased Adaptation: This would either leave in place or partially remove the southbound Carlsbad Blvd infrastructure for interim passive or active recreational uses until coastal hazards overwhelm the repurposed space. Once one of the identified triggers is met, the southbound roadway would be demolished, and recreational uses would shift to either the new complete street corridor or a new Class 1 boardwalk, depending on the identified trigger. Major infrastructure elements (e.g., the complete street roadway) would be constructed at its ultimate location while other temporary/movable, low-cost project features would provide amenities in the interim in spaces currently identified as being vulnerable to projected coastal hazards. The existing rock revetment will persist to support the use of the newly created space on the southbound roadway.

Phased Adaptation is shown graphically in Figure 21.

- Retreat Now: This option refers to the naturalization of the southbound roadway area by removing infrastructure within the 2100 projected Coastal Hazard Zone and restoring the La Encinas Creek estuary system. More specifically, this alternative seeks to establish a more natural cross-shore gradient promoting morphological processes that support the formation and resilience of a coastal pocket beach, dune, and dune- slack wetlands. The Las Encinas Creek estuary and beach would be allowed to evolve naturally and without major maintenance after the project is constructed. The infrastructure to be removed includes the existing southbound Carlsbad Boulevard bridge structure, 1,300 LF of rock revetment, and the existing roadway surface (i.e., asphalt) and fill prism (i.e., compacted dirt used to form the roadbed). The goal would be to reuse rock from the deconstructed revetment in other areas of the larger project that may require stabilization material (e.g. bridge abutments or EWA outfall protection). The Retreat Now option is shown graphically in Figure 22.

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South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 20. Phase 0 in the Las Encinas Segment overlaid with flood (top) and cliff erosion (bottom) hazards.

Figure 21. Phase 0 (as-built conditions) for the Phased Retreat Alternative

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"Complete Street" roadway
with sidewalks and bike lanes
Class 1 shared path for pedestfi
slower moving mobility options
Year 2100 Flood Hazard Zone

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 19

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 22. Phase 0 (as-built conditions) for the Retreat Now Alternative

4.3.3.1 Adaptive Pathways
Key themes around adaptive pathways for this segment hinge on which option is pursued in this segment (Phased Adaptation or Retreat Now). Since the Retreat Now option is built to a year 2120 resilient location, an adaptive pathway was not developed for that option. The proposed adaptive pathway for the Phased Adaptation option is shown in Figure 23. As shown, two triggers were identified that would signal the need to begin planning and implementation of the removal of the southbound roadway and shifting active transportation users to a new boardwalk or the complete street roadway and bridge. Triggers identified include rock revetment armoring integrity, and flood frequency. A lead time of five to 10 years was identified as sufficient time to plan and implement this management action, assuming the action is included in a programmatic environmental document (assumed PEIR) and funding exists.

April 23, 2024
Item #6 Page 34 of 41
Legend
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GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 20

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Figure 23. Adaptive Pathways for Las Encinas Creek Segment

April 23, 2024
Item #6 Page 35 of 41
Phased Adaptation
I - - - - - - - Vipt n r --------,
I I
: Demolish & Redirect Active :
:Transportation to New Bridge :
-----------r------------
OR ___________ J ___________ _
• Option 2 :

I Demolish & Build
Retreat Now : __ !-J_e~ ~!~~s_ ~ !3_0!1!~':'.Y~~k ___ _ w/ or wo/ Class 1 Boardwalk
Triggers
* *
Armoring Integrity: Rock revetment repair & maintenance - need to extend or repair a significant segment of rock revetment (500 LF). Repair or damage exceeds $5M (2023 dollars) .

Flood Frequency: Significant overtopping of rock revetment and flooding of Mobility Corridor 10 times in one year (i.e. , 12 month period) .

Action
Begin planning & implementation of Option
1 or 2 (lead time assumption 5-10 yrs*)
*Assumes PEIR and available funding

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 21

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

4.3.3.2 Trade-offs between Phased Adaptation and Retreat Now Options The options of Phased Adaptation and Retreat Now each have unique advantages, disadvantages, and trade-offs that warrant evaluation. Table 1 summarizes these to aide in the decision-making process.

Table 1. Summary of Key Advantages, Disadvantages and Trade -offs between the Phased Adaptation and Retreat Now Options Category Phased Adaptation Retreat Now
Permitting and
Construction:

Can all elements of the
design be implemented
at once?
No. This option would occur in phases.

Construction, disruption to traffic flows, and
permitting would need to occur one or more times
once a trigger is met.

Yes. This option would perform all
actions at one time, not requiring any
additional permitting or construction.

Financial:

What are the
differences in costs
between the two
options (qualitatively)?
This option may be less expensive in the short-term
because it would repurpose the existing southbound
roadbed into a mobility corridor. Thus, the project
would not require the demolition of the bridge, rock
revetment or roadway.

This option may have more expensive construction
costs over a 20-50 year period because it results in
more planning and construction activities spread out
over time. Factors to consider include
mobilization/demobilization, pulling construction
permits (e.g., traffic control, etc.), escalation of
material and labor costs, increase in construction
costs, and scarcity of future funding. By waiting until impacts are realized, addressing all future
adaptation needs and costs could vary greatly, likely
being much higher than addressing components all
at once.

Additionally, this option does not take full advantage
of the current availability of state and federal grants to support projects of this type. The availability of
these funding sources for future phases of the
project is unknown.

Higher costs to construct because it
includes the demolition costs of the
bridge, rock revetment and roadway.

This option would need to protect the
existing EWA outfall, likely with rock
reused from onsite materials
(deconstructed revetment), which adds
additional cost in the short-term.

This option may be less expensive over
a 20-50 year period because it would
construct everything at once in today’s
dollars (i.e., reduced escalation).

Additionally, this option could take
advantage of ample state and federal
funding that exists for coastal resilience
projects today. This funding is forecasted
to be available at least over the next 5
years, which could support
implementation costs.

Coastal Hazards &
Public Safety:

Would the option
provide public
protection from existing
and projected future
coastal hazards?
Yes. This option would repurpose the roadway for
recreational uses until it becomes unsafe to use for
this purpose. The existing rock revetment would
remain in place to protect the roadway from erosion.

Triggers described within this plan identify when the
space needs to be abandoned.

Yes. This option would relocate public
infrastructure out of the Coastal Hazard
Zone for the next 100 years.

Recreational uses of the abandoned
space would be protected through
nature-based design techniques (e.g.,
cobble-sand dune system).

Sandy Beach:

Will the alternative
sustain a dry, sandy
beach in the study
area?
No. The existing beach is narrow. It is anticipated
that with 1.7’ of SLR, the existing narrow beach
within the Las Encinas Creek study area will be
completely eroded/inundated, assuming no other
management actions occur.

Yes. This option is anticipated to result in
a localized increase in beach area
immediately through removal of the
roadway. Preliminary modeling suggests
this pocket beach may sustain through

6.6’ of SLR as the beach and created
dune are allowed to transgress
landward.

Access:

What are the
differences in public
access and use
between the two
options?

This option provides active transportation along the
southbound roadway, closer to the coast and similar
to current conditions. Until triggers are met and the
space needs to be abandoned, access would feel
safer and likely more welcoming given the
elimination of vehicular traffic.

Recreational opportunities along the beach would
remain constrained due to increasingly narrow
beach widths as sea levels rise.

Active transportation uses would be
focused along the enhanced roadway,
which would be located further from the
coast and elevated, a changed user
experience from present day.

The removal of the southbound roadway
would enhance existing, and create new,
recreational opportunities from the
additional beach space.

Habitat Restoration:

How would these
options benefit the
restoration of Las
Encinas Creek?
The southbound roadway area will be restored to
coastal strand once the trigger is met. The area to
be restored and viability of the habitat may be lower
than if the habitat was built initially due to elevated water levels and more frequent wave attack.

April 23, 2024
Item #6 Page 36 of 41

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 22

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

4.3.4 Island Way Segment
The main vulnerability of concern in the Island Way Segment is cliff erosion. The first line of infrastructure to be impacted by cliff erosion in the future would be the South Carlsbad State Parks Campground day use lot and overnight areas (Figure 24). Given that the proposed roadway is inland of these campground facilities and significantly inland from the cliff edge, an adaptive pathway was not developed for this segment. Instead, it is recommended that the city continues to coordinate with State Parks regarding their plans to adapt these facilities.

Figure 24. Phase 0 (as-built condition) of the Island Way Segment

April 23, 2024
Item #6 Page 37 of 41
Island Way- Phase 0
(Roundabout) 3:
2070 Cliff Hazard Zone
2120 Cliff Hazard Zone

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 23

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

5. Monitoring Framework
Based upon the thresholds identified within the adaptive pathways for each project segment, monitoring will be required to help understand when a threshold has been met. A monitoring framework was developed with potential methods and data collection frequencies shown in Table 2 below.

Table 2. Proposed Monitoring Activities to Inform Proposed Adaptive Pathways Metric Monitoring Method Frequency
Cliff Erosion
High-tech /
Data driven
Topographic surveys (traditional survey
profiles, orthophotogrammetry, LiDAR)
Semi-annual Surveys
Extreme Events
Low-tech/
Interpretive
Site amenities (e.g., colored pavers,
benchmarks, signs) indicating bluff top
edge erosion and encroachment into
established thresholds
Continuous
Beach Erosion Beach profile surveys (back beach to depth of closure) Subaerial beach surveys via orthophotogrammetry or LiDAR Semi-annual Surveys
Extreme Events
Rock revetment
/ Armoring
Integrity
Topographic Survey (traditional survey profiles,
orthophotogrammetry, LiDAR)
Structural condition inspection
Annual
Post Extreme Events
Roadway
Maintenance
Costs
Financial tracking of cleanup and repair activities Annual Flood
Frequency
Flood elevation thresholds (e.g., minor, moderate,
significant) are determined and tracked by combined tide and wave observations outputs in coordination with SIO;
Supplemented by site observations and closure tracking.

Continuous
Extreme Events
Annual
Public Access /
Usability
Site Observations
Closure Tracking
Aggregated Big Data Sources
As Needed
Extreme Events

Further description of the monitoring approach for each of the metrics is provided below:
- Cliff Erosion: Since the setback (i.e., distance from the cliff edge to the buffer) is a key threshold in the adaptive management pathways for the segments, cliff monitoring will be important to inform this plan. Two options exist to track cliff erosion in the project area – dubbed low-tech and high-tech options. The high-tech option leverages cliff monitoring currently performed by SIO periodically; however, monitoring at an increased frequency, such as semi-annual, may be necessary to detect and track changes. Monitoring can be performed via traditional survey methods or via drone or plane overflight using orthophotogrammetry or LiDAR methods.

If the city notices significant erosion it may elect to complete an additional survey(s) accordingly. The low-tech option utilizes low-cost methods that may be adequate for certain areas along the project site given the nature of bluff erosion. Benchmarks integrated within the infrastructure amenities could serve as a passive method for tracking cliff erosion. For example, markers or pavers between the setback and buffer could have a progressive color scheme that would identify the setback encroaching on the buffer. Added benefits of this low-tech monitoring technique would be the easy ability of maintenance staff to track changes in the bluff visually, as well as serving as an educational opportunity for the public.

- Beach Erosion: Though not explicitly called out as a threshold in the adaptive management pathways, beach conditions have a significant effect on other metrics within this plan – specifically cliff erosion, armoring integrity and flood frequency. Thus, monitoring beach changes quarterly is recommended within the project area. Monitoring should consist of traditional beach profile surveys (back beach to depth of closure) or capturing the subaerial beach with orthophotogrammetric or LiDAR methods. SIO already performs quarterly beach monitoring at South Carlsbad State Beach that can be leveraged to track changes in beach conditions over time.

April 23, 2024
Item #6 Page 38 of 41

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 24

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan - Rock Revetment / Armoring Integrity: The rock revetment could shift and become increasingly destabilized as waves of greater magnitude more frequently impact the structure with SLR. The rock revetment is currently monitored annually as part of the city’s CDP with the Coastal Commission. It is recommended that this program continue and potentially be increased in frequency as the structure becomes increasingly impacted (e.g., post-extreme event condition surveys). It is also recommended that a coastal engineer or a civil/structural engineer with experience with coastal structures inspect the structure annually to assess its condition.
- Roadway Maintenance Costs: Keeping a ledger on annual expenditures for roadway cleanup and repair is important to understand escalating costs of maintaining public use along the repurposed southbound roadway.

This monitoring metric requires a city staff person to organize cost data from various departments into a ledger.

- Flood Frequency: This metric consists of partnering with SIO to use combined tidal conditions (predictions and observations) and wave modeling outputs to determine and validate flood elevation thresholds (e.g., minor, moderate, significant and track flooding over time. The exact elevation and oceanographic conditions to define significant flooding will be determined and validated at a later date. Once validated, this tool could be used to identify and track flood events to discern if the threshold of 10 flood events in 12 months is triggered. This information could be added to the existing SIO website and linked through a city webpage. Automated emails to city staff could be generated in anticipation of forecasted flood events. This could be supplemented with site observations captured during extreme events with a field sheet and/or photos.

- Public Access / Usability: Though not explicitly called out as a threshold in the adaptive management pathways, site usability is anticipated to change over time as assets experience impacts. These changes can be documented to supplement the objective thresholds selected (e.g., erosion, flooding, and armoring integrity). Methods for tracking this could include site observations, closure tracking of key pieces of infrastructure (e.g., bikeway, roadway, etc.) or through aggregated big data sources which can show usage patterns derived from cell phone data.

April 23, 2024
Item #6 Page 39 of 41

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 25

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

6. Conclusions
This Adaptive Management Plan presents adaptive pathways for the project, divided into four discrete segments.

These pathways identify future management actions that will be taken once coastal hazards meet certain thresholds or triggers. These thresholds vary from proximity to the proposed infrastructure elements, flood frequency, and armoring integrity and maintenance costs. A monitoring framework was developed to help the city identify and track metrics over time to determine when thresholds are met.

The adaptive pathways for each of the four project segments are summarized below:
- Palomar Airport Road: Four potential adaptive phases were identified in the plan for this segment. The overall themes of these phases are to narrow and eventually relocate the proposed bikeway corridor over time with the goal of keeping this mobility corridor in close, but safe, distance from the ocean to maximize coastal views from the trails.
- Solamar Drive: One potential adaptive phase was identified in the plan for this segment with multiple options.

The overall themes are to maximize the use and function of the roundabout and explore multi-benefit opportunities for enhanced access. One option is to evaluate erosion control and cliff stabilization methods which could be pursued in conjunction with a beach access stairway at this location. Another option would be to change the proposed roundabout to a signal to regain some space and distance from the cliff erosion hazard.
- Las Encinas Creek: Adaptive pathways for this segment hinge on which project option is pursued (i.e., Phased Adaptation or Retreat Now). Since the Retreat Now option is built to a year 2120 resilient location, an adaptive pathway was not developed for that option. The proposed adaptive pathway for the Phased Adaptation option includes two triggers that would signal the need to begin the planning and implementation of the removal of the southbound roadway and shifting active transportation users to a new boardwalk or the complete street roadway and bridge. Triggers identified include rock revetment armoring integrity and flood frequency. - Island Way: Given that the proposed roadway is inland of State Parks campground facilities and significantly inland from the cliff edge, an adaptive pathway framework was not developed for this segment. Instead, it is recommended that the city continues to coordinate with State Parks regarding their plans to adapt these facilities.

It is important to note that the project is still in the preliminary engineering phase. Thus, this plan is based upon a conceptual understanding of how particular assets and features throughout the project are situated. This plan may require revision as additional engineering details are refined.

April 23, 2024
Item #6 Page 40 of 41

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 26

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

ghd.com The Power of Commitment
April 23, 2024
Item #6 Page 41 of 41
m WWW
➔
1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 9:05 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now From: Sarah
Louie <[email protected]>
Sent: Monday, April 22, 2024 8:29 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now Honorable Mayor and City Council,
Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

By prioritizing "Retreat Now," you can direct staff to aggressively pursue current state and federal funding opportunities with the greater vision in mind. Saving the beach is just as important as moving the threatened road, which already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more triggers. We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments.

Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept.

Thank you for your leadership.

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All Receive - Agenda Item #_____
For the Information of the:

CITY COUNCIL
Date: ______________ CA____ CC____
CM____ ACM____ DCM (3)____
6 4/22/24 x x
x x x
1 Ana Alarcon
From: [email protected]
Sent: Monday, April 22, 2024 8:43 AM
To: City Clerk
Carlsbad City Council.

In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

Thank You
Linda Westfall
Carlsbad resident
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1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:26 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Jessica Dent <[email protected]>
Sent: Friday, April 19, 2024 5:23 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sincerely,
Jessica Dent
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From: Council Internet Email
Sent: Monday, April 22, 2024 8:26 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Alex Rubenson <[email protected]>
Sent: Friday, April 19, 2024 6:02 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council, Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative. By prioritizing "Retreat Now," you can direct staff to aggressively pursue current state and federal funding opportunities with the greater vision in mind. Saving the beach is just as important as moving the threatened road, which already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more triggers. We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments. A protected bike and pedestrian lane can be put anywhere, but a beach cannot. Preserving coastal resources, and our access to them, is of paramount concern. Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept. Thank you for your leadership.

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1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:26 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: John Swan <[email protected]>
Sent: Friday, April 19, 2024 6:37 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

From: Sparrow McMorran <[email protected]>
Sent: Friday, April 19, 2024 8:38 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sparrow McMorran
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1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:25 AM
To: City Clerk
Subject: FW: Item #6 — South Carlsbad Bl vd Climate Adaptation Project

-----Original Message-----
From: Janis <[email protected]>
Sent: Friday, April 19, 2024 9:01 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6 — South Carlsbad Blvd Climate Adaptation Project

Dear Honorable Mayor and City Councilmembers,

The stretch of beach from the Terramar steps south to Tower 28 is one of my favorite places on the planet. I have walked there regularly for over ten years and have witnessed bluff failures and beach erosion over time. In fact, I remember watching as heavy equipment put riprap into place after southbound Carlsbad Blvd. was damaged years ago.

To save North Ponto at Las Encinas Creek, I urge you to prioritize "Retreat Now” by directing staff to seek state and federal funding to preserve and restore this precious piece of coastline.

The adaptation project should include moving the bike and pedestrian lanes eastward at the same time as the highway’s southbound lanes are realigned, and the current roadway should be completely removed when the realignment work has been completed.

Please follow the lead of the Beach Preservation Commission by supporting retreat now as the preferred concept for the Adaptive Management Plan for South Carlsbad Blvd.

With appreciation,
Janis Jones
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From: Council Internet Email
Sent: Monday, April 22, 2024 8:25 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Patty Gray <[email protected]>
Sent: Friday, April 19, 2024 9:09 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

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1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:25 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Tony Pazelt <[email protected]>
Sent: Friday, April 19, 2024 9:41 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.
1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:25 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Alicia Pazelt <[email protected]>
Sent: Friday, April 19, 2024 9:54 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sent from my iPhone
CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe. 1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:24 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: [email protected] <[email protected]>
Sent: Friday, April 19, 2024 11:07 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Thank you for your leadership.

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1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:24 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Sean Ryan MD <[email protected]>
Sent: Saturday, April 20, 2024 12:30 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sean Ryan, M.D.

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From: Council Internet Email
Sent: Monday, April 22, 2024 8:24 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Julie Hand <[email protected]>
Sent: Saturday, April 20, 2024 10:15 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

-----Original Message-----
From: Kelly Brannigan <[email protected]>
Sent: Saturday, April 20, 2024 12:33 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sent from my iPhone
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From: Council Internet Email
Sent: Monday, April 22, 2024 8:04 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Bob Merson <[email protected]>
Sent: Saturday, April 20, 2024 4:16 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

As a north county resident for 40 years I have watched our beautiful beaches shrink. I feel this is an important quality of life issue that needs to be addressed.

Thank you for your leadership.

Bob Merson
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From: Council Internet Email
Sent: Monday, April 22, 2024 8:04 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Mike Guerreiro <[email protected]>
Sent: Saturday, April 20, 2024 6:01 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.
1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:04 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Michael Martino <[email protected]>
Sent: Saturday, April 20, 2024 6:19 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Michael J. Martino
CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe. 1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:04 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: JB <[email protected]>
Sent: Saturday, April 20, 2024 6:23 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Saving the beach is just as important as moving the threatened road, which already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more triggers. We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments.

A protected bike and pedestrian lane can be put
anywhere, but a beach cannot. Preserving coastal resources, and our access to them, is of paramount concern.

Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept.

Thank you for your leadership.

Best Regards,

Jacqueline Bouquet
Carlsbad Resident
CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.
1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:03 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: S V <[email protected]>
Sent: Saturday, April 20, 2024 7:08 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.
1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 8:03 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Charlotte Hassett <[email protected]>
Sent: Sunday, April 21, 2024 6:16 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 8:03 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: shawn johnson <[email protected]>
Sent: Sunday, April 21, 2024 1:59 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Shawn
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From: Council Internet Email
Sent: Monday, April 22, 2024 8:02 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Jesse Shea <[email protected]>
Sent: Sunday, April 21, 2024 2:11 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership on this important coastal adaptation project. As a Carlsbad resident and frequent user of Carlsbad's beaches — specifically this one — I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative. By prioritizing "Retreat Now," you can direct staff to aggressively pursue current state and federal funding opportunities with the greater vision in mind. Saving the beach is just as important as moving the threatened road, which already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more triggers. We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments.

A protected bike and pedestrian lane can be put anywhere, but a beach cannot. Preserving coastal resources, and our access to them, is of paramount concern. Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept.

Thank you for your leadership.

All the best,

Jesse Shea & Annicia Phu
906 Caminito Madrigal Unit E
Carlsbad CA 92011
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From: Council Internet Email
Sent: Monday, April 22, 2024 7:59 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Elizabeth Owen <[email protected]>
Sent: Monday, April 22, 2024 7:57 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership on this important coastal adaptation project. As a Carlsbad resident and frequent Carlsbad's beach visitor, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

Thank you for your leadership.

Elizabeth Owen
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From: Council Internet Email
Sent: Monday, April 22, 2024 7:53 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Mark Lombardo <[email protected]>
Sent: Sunday, April 21, 2024 9:39 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Mark Lombardo
7311 Black Swan Place
Carlsbad, CA 92011

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From: Council Internet Email
Sent: Monday, April 22, 2024 7:53 AM
To: City Clerk
Subject: FW: Item #6 — South Carlsbad Bl vd Climate Adaptation Project

From: Mitch Silverstein <[email protected]> Sent: Sunday, April 21, 2024 9:39 PM
To: Janis <[email protected]>
Cc: [email protected]; Council Internet Email <[email protected]> Subject: Re: Item #6 — South Carlsbad Blvd Climate Adaptation Project

Awesome email Janis, thank you for taking the time to make it personal!!!!

Mitch Silverstein | San Diego County Policy Coordinator | Surfrider Foundation 619.736.7757 | [email protected]
he/him (what's this)

On Fri, Apr 19, 2024 at 9:01 PM Janis <[email protected]> wrote:

Dear Honorable Mayor and City Councilmembers,

To save North Ponto at Las Encinas Creek, I urge you to prioritize "Retreat Now” by directing staff to seek state and federal funding to preserve and restore this precious piece of coastline.

Please follow the lead of the Beach Preservation Commission by supporting retreat now as the preferred concept for the Adaptive Management Plan for South Carlsbad Blvd.

With appreciation,
Janis Jones
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From: Council Internet Email
Sent: Monday, April 22, 2024 7:51 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: marie marcinko <[email protected]>
Sent: Sunday, April 21, 2024 10:49 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments. A protected bike and pedestrian lane can be put anywhere, but a beach cannot. Preserving coastal resources, and our access to them, is of paramount concern. Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept. Thank you for your leadership.

Kind Regards,
Marie Marcinko
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1 Ana Alarcon
From: Justin Cunningham <[email protected]>
Sent: Sunday, April 21, 2024 4:50 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation n order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

SIncerely,
--
Justin Cunningham
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From: Wyn Di Stefano <[email protected]>
Sent: Sunday, April 21, 2024 7:56 AM
To: City Clerk
Subject: Please help address South Carlsbad beach erosion! Thank you.

Best Regards,
Wyn Di Stefano
415-827-2691
www.wyndistefano.com

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From: Joe Pusl <[email protected]>
Sent: Saturday, April 20, 2024 3:19 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

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From: Udo Wahn <[email protected]>
Sent: Saturday, April 20, 2024 1:23 PM
To: City Clerk
Subject: Comment Item 6 S. Carlsbad Blvd Adaptation

In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

Thank you!

Udo
--
Udo Wahn M.D
Executive Committee Surfrider Foundation San Diego
Vice Chair
he/him/his
https://sandiego.surfrider.org/
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From: dan steindlberger <[email protected]>
Sent: Saturday, April 20, 2024 3:18 AM
To: City Clerk
Subject: April 23, 2024 City Council Meeting Public Comment, Agenda Item 6 To Mayor Blackburn and Carlsbad City Council,

City staff have demonstrated a preference for the “phased adaptation” approach to the South Carlsbad Blvd. Climate Adaptation Project. In public hearings with the Beach Preservation Commission, staff have given a few reasons why the “retreat now” option would not be favorable. In my opinion these apparent roadblocks or hurdles are self-imposed.

One reason given was that if the southbound roadway was removed at “dip in the road” then we would not have a recreational path for pedestrians and bicycles. This could easily be overcome with the construction of a new path and small bridge spanning the creek a little further inland.

Another stated reason is that we can’t proceed with anything until we secure funding for a hundred million dollar new bridge to span the creek, for vehicle traffic, to replace the existing bridge that is currently used for for northbound traffic.

The City plans to make this new bridge one vehicle lane in each direction, presumably with bike lanes. The existing bridge should be wide enough to accomplish this in the meantime, until funding is secured for a new bridge. If it is not wide enough to accommodate bike lanes, then the bikes could be routed onto the new recreational path. In short, we already have a bridge.

City staff have also suggested that we have about ninety-six years to come up with a plan, and act, before sea level and flooding become an issue. This is clearly not the case. An extension of the rock revetment is already needed in order to shore up the roadway where the rip-rap terminates at the north end. The need for further extensions would apparently be ongoing.

In my opinion choosing the “phased adaptation” approach is not in the “spirit” of the Climate Ready Grant that the City received from The California Coastal Conservancy for this project. Furthermore, availability of additional grants or other types of funding for climate resiliency will be harder to come by as more applicants seek funding for such projects. This is a choice between restoring a disappearing beach, and trying to maintain threatened and defunct infrastructure that is destined to be a drain on city resources, and ultimately fail.

Respectfully,
Dan Steindlberger

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From: Joe Houde
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation Date: Friday, April 19, 2024 6:37:46 PM
Hello,
Thank you for your leadership on this important coastal adaptation project.

Please choose "Retreat Now" as the preferred project alternative. Removing the existing roadway once the new one is built will restore the beach at Las Encinas Creek and preserve it for future generations.

Please direct staff to aggressively pursue current state and federal coastal resilience funding in order to prioritize "Retreat Now" and pay for this critical climate adaptation project.

Leaving the existing roadway in place may seem cheaper and easier in the short-term, but it will ultimately be costly and self-defeating. The road already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more "triggers." Sadly, the beach in this area is already inaccessible and dangerous during high tides due to the existing road and the rock revetment placed on the beach to protect it. We want beaches with safe access and towel space, not rock revetments.

Since staff is not asking for any further City Council action at this time, please consider a motion to support "Retreat Now" as the preferred concept (as the Beach Preservation Commission did).

Thank you,
Joe Houde
President, North County Climate Change Alliance

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•
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1 Ana Alarcon
From: Bruce Pettibone <[email protected]>
Sent: Friday, April 19, 2024 5:16 PM
To: City Clerk
Subject: Saving the beach at Las Encinas Creek
In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

Thank you,

Bruce Pettibone

Carlsbad resident

2633 Ocean St #2
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From: Council Internet Email
Sent: Friday, April 19, 2024 4:55 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Mark O'Connor <[email protected]>
Sent: Friday, April 19, 2024 4:07 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor Blackburn and City Council,

Thank you for your leadership on this important coastal adaptation project. I own a home in Carlsbad, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

Thank you for your leadership.

Mark O’Connor
Avenida Diestro
Carlsbad
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From: Anthony <[email protected]>
Sent: Friday, April 19, 2024 4:18 PM
To: City Clerk
Subject: Match northbound lanes
Easy.

Match northbound lanes. Fix bridge. Put up a 6'fence along top of slope.. forget about round a bout.

Get Outlook for iOS
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From: Council Internet Email
Sent: Friday, April 19, 2024 4:03 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: J.P. Bruner <[email protected]>
Sent: Friday, April 19, 2024 3:26 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

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1 Ana Alarcon
From: Council Internet Email
Sent: Friday, April 19, 2024 4:03 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Allison Bray <[email protected]>
Sent: Friday, April 19, 2024 3:10 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Allison Bray

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From: Ken Sanford <[email protected]>
Sent: Friday, April 19, 2024 4:02 PM
To: City Clerk
Subject: Relocation of the coast highway along Carlsbad beach My name is Ken Sanford and I live in Escondido. I enjoy and frequent many of the beaches in North County and I fully support a realignment of the coast highway to provide more room for beach erosion and expansion. We can only stand in the way of nature for so long and the time has come to stop pouring money into what is a bottomless pit, acknowledge our shortcomings and prepare for an inevitable future. Such a decision will provide financial relief to the City of Carlsbad and allow planning for better use of the funds made available by making the practical decision.

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From: Jaclyn Fasano <[email protected]>
Sent: Friday, April 19, 2024 3:57 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation To whom it may concern,

To save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

As someone who lives in Oceanside and frequents Carlsbad often to enjoy the sand and the surf, a solution must be figured out. Leaving the existing roadway may be easiest and more cost-effective in the short term but in the long run, we as North County residents will pay more in both money and patience. The road is already flooding and as sea levels show no signs of stopping it's absurd to wait for more triggers.

Please aggressively pursue "Retreat Now" so we can all continue to enjoy the beach and have safe access to sand without rock revetment. Preserving coastal resources, and our access to them, is of paramount concern.

Thank you for your time,
Jaclyn

--
Jaclyn Fasano (she/her)
c: 631.335.5444
[email protected]
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From: Jon Holstein <[email protected]>
Sent: Friday, April 19, 2024 3:11 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation Good afternoon,

As a long time Carlsbad resident, I support prioritization of the protection of our beaches and waterways. In order to save the beach at Las Encinas Creek, please support the “Retreat Now” project alternative and direct staff to seek additional funding with that vision in mind. Our coastline is too valuable to not prioritize.

Thank you,
Jon Holstein
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From: Council Internet Email
Sent: Friday, April 19, 2024 3:06 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Jillian Queri <[email protected]>
Sent: Friday, April 19, 2024 2:14 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

With gratitude,

Jillian Queir

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From: KEILI MCEVILLY <[email protected]>
Sent: Friday, April 19, 2024 2:55 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation To whom it may concern,

My name is Keili McEvilly and I am a born and raised Carlsbad resident. I grew up surfing and enjoying the beaches at Las Encinas Creef and urge you to support "Retreat Now" as the preferred project alternative. And please direct staff to seek additional funding and support with that vision in mind.

We need to think about our future, and what kind of an environment we will be leaving for generations to come.

Please show your priority to our ecosystems and respect to the places that raised us.

Thank you.

Sincerely,
Keili McEvilly
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From: Adam Kimbrough <[email protected]>
Sent: Friday, April 19, 2024 2:14 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation Leave the hwy where’s it’s at. Stop blowing money.

Sent from my iPhone-Please excuse any spelling errors

Adam Kimbrough
CBRE
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From: james A gosnell
To: City Clerk
Cc: James Harris; Jim Gosnell; [email protected]; [email protected]; [email protected] Subject: re: Agenda Comments on Item #6, South Carlsbad Blvd Adaptation alongside South Carlsbad State Campgorund Date: Friday, April 19, 2024 2:00:29 PM
Hi Carlsbad City Council,
As a San Diego County resident for the past thirty years, I have oftentimes advocated for public access to the Pacific Ocean to support the recreational coastal lifestyle and the commonly used Nautical theme or commonly used Beach theme of housing within the County of San Diego.

As an avid surfer and ocean activist, I have often lobbied our elected officials to support public access to the Pacific Ocean as a fundamental human right. Currently, some fundamental rights, such as the right to a woman's reproductive health, is a terse issue that is often overly litigated at the Federal and now 50 State level because it is: (1) a personal decision by a single member of contemporary America; or (2) a collective decision by two members of a modern American society.

That aside, the current issue is public access to the beach alongside Carlsbad Boulevard.

Well, let's face it, the winter storms over the past few years have eroded the bluff. Remember, that big annual September South last year? No! (because of the rising tides and sea level rise, our peak summer swell was in July) This is an issue because the school system utilizes public access to support healthy initiatives for local children such as Surf Physical Education at the High School level. Remember the last time someone "played hooky" from Surf PE? No!
What do we do?
Well, the Surfrider Foundation's position is:

In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

However, it does not fully address the key three issues: sand on the highway causing a safety danger to the drivers, the flooding waters during the storms causing a risk of coastal road erosion, and the ability to ingress and to egress from the Pacific Ocean at South Carlsbad State Beach. The road will likely need to be altered because of the increasing safety issues during the winter storm seasons.

For the past twenty years or so, give or take, because I have lost all my once sandy blonde beach hair and am now bald, I have surfed at South Carlsbad State Beach - North ("North Ponto" or "spanish house") because of the killer swell and adequate parking, on more Fridays than not to release stress and anxiety, healthily exercise, as well as unwind from a week at The Office.

When I worked locally on Palomar Airport Road, I went daily during my hour- long lunch break to "get wet", do a bucky lasek inspired "christ air" with my surfboard in the air by throwing the fins through the barrel, and "enjoy a dip" in the Pacific Ocean.

That aside, over time, I have seen the various bluff trails and sand restoration efforts restore the beach to accommodate local taxpayers, county residents, and the ever growing tourist communities that come to Carlsbad for "a slice of Californication."
That being said, I am not a city taxpayer, so I play a smaller role in the City of Carlsbad's decision, think of me as a minor player in the lawsuit with the public entity over public beach access.

My reccomendation is to stick within the guidelines of the California Coastal Commission's rules and regulations for beachside development because they are incredibly strict on coastal development and to preserve the existing state park parking area (which is regulated by the Carlsbad Police Department and CA State Park Rangers) for local taxpayers, county residents, working-class citizens who are employed in Carlsbad, and visiting tourists to be able to continue to access the beach at South Carlsbad State Beach.

Your assistance and collaboration are very much appreciated. Should any questions arise, do not hesitate to contact The Firm. Thx in advance for the space.
------
Kindness Matters,
james A gosnell, Esq.

Work Cell: +18052686386
The Firm: +17609367341
Facsimile: +17604367158
[email protected]
Sent from my Google Pixel 8
https://kswaveco.com/patents-trademarks/
** This e-mail (including any attachments) may contain information that is private, confidential, or protected by attorney-client privilege or legal privilege. **
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From: Council Internet Email
Sent: Friday, April 19, 2024 2:00 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Tina Overland <[email protected]>
Sent: Friday, April 19, 2024 1:46 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Tina N. Overland
Leucadia
Sent from my iPhone
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From: Council Internet Email
Sent: Friday, April 19, 2024 2:00 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: John Moss <[email protected]>
Sent: Friday, April 19, 2024 1:18 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

PS - I love playing Pickleball at Poinsettia Park the courts and grounds are very well maintained!!! We could use more Pickleball courts at Poinsettia!

Thank you for your leadership.

John Moss

Sent from my iPhone
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From: Council Internet Email
Sent: Friday, April 19, 2024 1:59 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: lisa neely <[email protected]>
Sent: Friday, April 19, 2024 1:01 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Lisa E. Neely

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From: Council Internet Email
Sent: Friday, April 19, 2024 1:59 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Mark Irwin <[email protected]>
Sent: Friday, April 19, 2024 12:25 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Best,
Mark and Amber Irwin

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From: Council Internet Email
Sent: Friday, April 19, 2024 1:59 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Estee Robinson <[email protected]>
Sent: Friday, April 19, 2024 12:13 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sincerely,
Estee Robinson

Sent from my iPhone
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From: Council Internet Email
Sent: Friday, April 19, 2024 1:59 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: David Rippberger <[email protected]>
Sent: Friday, April 19, 2024 12:11 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council, Thank you for your leadership on this important coastal adaptation project. As a long time resident and property owner and frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative. By prioritizing "Retreat Now," you can direct staff to aggressively pursue current state and federal funding opportunities with the greater vision in mind.

Preserving coastal resources, and our access to them, is of paramount concern. Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept. Thank you for your leadership.

David Rippberger
3920 Monroe St Carlsbad
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1 Ana Alarcon
From: Council Internet Email
Sent: Friday, April 19, 2024 1:59 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Gregory Means <[email protected]>
Sent: Friday, April 19, 2024 12:02 PM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

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From: Council Internet Email
Sent: Friday, April 19, 2024 1:58 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Casey Contreras <[email protected]>
Sent: Friday, April 19, 2024 11:59 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sent from my iPhone
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From: Council Internet Email
Sent: Friday, April 19, 2024 1:58 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Cindy D <[email protected]>
Sent: Friday, April 19, 2024 11:57 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,
Thank you for your leadership on this important coastal adaptation project. As a neighbor of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments. A protected bike and pedestrian lane can be put anywhere, but a beach cannot.

I hope other cities will do the same.

Thank you for your leadership.

Cindy Davenport
Oceanside
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1 Ana Alarcon
From: Council Internet Email
Sent: Friday, April 19, 2024 1:58 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Carm <[email protected]>
Sent: Friday, April 19, 2024 11:49 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Jennifer Carmichael
Sent from my iPhone
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From: Council Internet Email
Sent: Friday, April 19, 2024 1:58 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Brad Fields <[email protected]>
Sent: Friday, April 19, 2024 11:48 AM
To: [email protected]
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

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From: james A gosnell
To: City Clerk
Cc: James Harris; [email protected]
Subject: Comments on Item #6, South Carlsbad Blvd Adaptation alongside South Carlsbad State Park Date: Friday, April 19, 2024 1:49:37 PM
Hi Carlsbad City Council,
As a San Diego County resident for the past thirty years, I have oftentimes advocated for public access to the Pacific Ocean to support the recreational coastal lifestyle and the commonly used Nautical theme or commonly used Beach theme of housing within the County of San Diego.

As an avid surfer and ocean activist, I have often lobbied our elected officials to support public access to the Pacific Ocean as a fundamental human right. Currently, some fundamental rights, such as the right to a woman's reproductive health, is a terse issue that is often overly litigated at the Federal and now 50 State level because it is:
(1) a personal decision by a single member of contemporary America; or (2) a collective decision by two members of a modern American society.

That aside, the current issue is public access to the beach alongside Carlsbad Boulevard.

In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

When I worked locally on Palomar Airport Road, I went daily during my hour-long lunch break to "get wet", do a bucky lasek inspired "christ air" with my surfboard in the air by throwing the fins through the barrel, and "enjoy a dip" in the Pacific Ocean.

Work Cell: +18052686386
The Firm: +17609367341
Facsimile: +17604367158
[email protected]
Sent from my Google Pixel 8
https://kswaveco.com/patents-trademarks/
** This e-mail (including any attachments) may contain information that is private, confidential, or protected by attorney-client privilege or legal privilege. **
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From: Brock Hudnut <[email protected]>
Sent: Friday, April 19, 2024 1:23 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation Dear Carlsbad city council,

In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

I have been a resident of Encinitas for five years and work for a small business in Carlsbad near Palomar airport, so have spent a lot of time by this stretch of coast both commuting, biking, and surfing. It’s a great spot and hope that these improvements can make it better now and in the future!

Thanks,
Brock
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From: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Best,
Mark and Amber Irwin

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From: Evelyn Rodriguez <[email protected]>
Sent: Friday, April 19, 2024 12:27 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation Please support " Retreat Now" as the replacement and urge your staff to prepare for that plan by seeking extra funding.

It is important that we save the beach at Las Encinas Creek for future generations to be. I know leaving the roadway would be cheaper at the moment but in the long run it will cost more with all the damage that will occur with the rising sea levels. Please prepare for the future. I do not live in Carlsbad but it is the closest place to me with a beach and have been there my whole life please consider the alternative plan first. Thank you for leadership on this important coastal adaptation project.

Thank you,

Evelyn Rodriguez
A concerned citizen
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From: p nelson <[email protected]>
Sent: Friday, April 19, 2024 12:16 PM
To: City Clerk
Subject: item #6 Cbad Blvd.

Please move the roadway and preserve the beach as p priority item for Carlsbad.

Patrick Nelson
2907 Avenida Valera 92009
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From: Council Internet Email
Sent: Monday, April 22, 2024 2:43 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now From:

Pam Heatherington San Diego <[email protected]>
Sent: Monday, April 22, 2024 2:37 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now Honorable Mayor and City Council,
Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

Thank you for your leadership.

Pamela Heatherington
Environmental Center of san Diego
805-835-183
3 CAUTI
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All Receive - Agenda Item #____
For the Information of the:

CITY COUNCIL
Date: ______ CA____ CC____
CM____ ACM____ DCM (3)____
6 4/22/24 x x
x x x
1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 2:43 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Megan Ahn <[email protected]>
Sent: Monday, April 22, 2024 2:33 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 2:16 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Mark D'Andrea <[email protected]>
Sent: Monday, April 22, 2024 2:14 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 2:14 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Patrick Gauld <[email protected]>
Sent: Monday, April 22, 2024 1:15 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 2:13 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Adriana Santo Tomas <[email protected]> Sent: Monday, April 22, 2024 1:08 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Best,

Adriana Santo Tomas Encinitas resident in Leucadia
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From: Council Internet Email
Sent: Monday, April 22, 2024 2:13 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Mallory Shirazi <[email protected]>
Sent: Monday, April 22, 2024 1:05 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sent from my iPhone
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From: Sara Hickmann <[email protected]>
Sent: Monday, April 22, 2024 1:37 PM
To: City Clerk
Subject: Save the Ocean
In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

TTh
--
Sara Hickmann, Ph.D.

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From: Council Internet Email
Sent: Monday, April 22, 2024 1:31 PM
To: City Clerk
Subject: FW: McClellan Palomar Airport land use (April 23 City Council Mtg.)

From: Cynthia Trevino <[email protected]>
Sent: Monday, April 22, 2024 1:18 PM
To: Council Internet Email <[email protected]>
Subject: McClellan Palomar Airport land use (April 23 City Council Mtg.)

City Council Members:

When we bought our Carlsbad home in 1998, the then Airport Council was filled with appointees who did not live in Carlsbad.

When I attended meetings (ca. 1999-2002), the Airport Council appointees displayed thinly-disguised arrogance for input from me and other homeowners and residents. Clearly, they took action on zero of our inputs.

Please approve the McClellan Palomar Airport land use action with the below considerations in mind.

 Approve the Resolution presented with an expedited timeline to complete the General Plan Amendments and Zoning Updates by the end of this year, 2024.  Include directions to define “Airport Expansion” using the California State legal definitions in our City Code.
 Acknowledge in the Resolution per the Annexation Agreement and Court ruling in C4FA v.

County of San Diego, the County of San Diego, the County of San Diego voluntarily waived all their immunities regarding land use at McClellan Palomar Airport.

Thank you,

Cynthia Trevino
Carlsbad Homeowner since 1998
Voter

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From: Council Internet Email
Sent: Monday, April 22, 2024 1:30 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: [email protected] <[email protected]>
Sent: Monday, April 22, 2024 12:52 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 1:30 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Sparrow McMorran <[email protected]>
Sent: Monday, April 22, 2024 12:39 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sparrow McMorran
Carlsbad beach user
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From: steve schwartz <[email protected]>
Sent: Monday, April 22, 2024 1:23 PM
To: City Clerk
Subject: Save Carlsbad Beach
I am a member of Surfrider Foundation and agree to their recommendation for beach sand and other preservatioon. Especially at danger is the beach and roadway just north otf the campground. The road itself is in imminent danger of falling in the ocean at this location. We surfers call this area "La Costa Downs". It will really be DOWN if action is not taken. Please take action NOW.

Thank You, Steve Schwartz aka Bermuda Shorts
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April 22, 2024DeliveredviaemailTo: CarlsbadCityCouncil
Re: CommentsonApril 23, 2024Council AgendaItem#6, Adaptivemanagement planfortheSouthCarlsbadBoulevardClimateAdaptationProject HonorableMayor andCityCouncil,
Surfrider Foundationisanonprofit environmental organizationthat engagesavastvolunteer networkof oceanuserstoprotect our world’socean, waves, andbeachesfor allpeople. Our SanDiegoCountyChapter representsthousandsof oceanrecreationusers—fromdedicatedsurferstooccasional beachgoers—aswell asthecoastal communitiesandeconomiesthat relyonthemthroughout theregion. WeappreciatetheopportunitytoprovidecommentsontheSouthCarlsbadBoulevardClimateAdaptationProject. Surfrider hasbeenanactivestakeholder onthisproject, for whichour maininterest istheimprovement andlong-termpreservationof thebeachintherealignment area.

OnApril 2, theBeachPreservationCommission, whoadvisesyouonmatterspertainingtoprotectingandenhancingtheshoreline, preventingbeacherosion, andpreservingandmaintainingbeachesfor thesafetyandoptimumenjoyment of thepublic , officiallysupported 1 Retreat Nowasthepreferredproject alternative. Weareaskingyou, asCarlsbad’selectedleaders, toalsosupport Retreat Nowasthepreferredalternativefor therealignment of SCarlsbadBlvd. alongtheLasEncinasCreekstretch.

Fromabeachpreservationandclimateresiliencyperspective, Retreat Nowissuperior toPhasedAdaptationbyeveryconceivablemetric. Our positionisbuttressedbytheCIty’s2017SeaLevel RiseVulnerabilityAssessment, the2021Declarationof ClimateEmergency , andthe 2 General PlanSafetyElement approvedinJanuary2024 (asexplainedintheStaff Report). 3 3
Staff Report,p.3:TheSafetyElementsetsforthseveralgoalsrelatedtosafetyalongthecoast:● Giveprioritytonon-structuralshorelineprotectionoptionsandlimitorprohibithardshorelineprotectivedevices(Goal6-P.15)● Requireremovalorrelocationofstructuresawayfromsealevelrisehazardsifpublichealthandsafetyrisksexist,ifessentialservicescannolongerbemaintained,ifthestructuresarenolongeronprivatepropertyduetomigrationofthepublictrustboundary, orifthedevelopmentrequiresneworaugmentedshorelineprotectivedevicesthatwouldnototherwisebepermitted(Goal6-P.16) 2 Staff Report,p.4:“Thedeclaration[ofClimateEmergency]affirmsthecity’scurrentsustainabilityeffortsandongoingcommitmenttoprotectingtheenvironmentstating,‘anymeaningfulactionthatstandsachanceofsuccessatmitigatingandadaptingtotheeffectsofclimatechangerequiresmobilizationwithoutdelay.’” 1 DirectfromtheCarlsbadBeachPreservationCommitteewebpage Phone: 858.800.2282 | [email protected] | surfridersd.org3900ClevelandAve., Ste201, SanDiego, CA92103 PhasedAdaptationleavestheroadandthepilesof bouldersthat protect it inplacefor upto96yearsafter vehicletrafficisrealigned, all of whichexacerbatesbeacherosionbyactingasanartificial backtothebeachthat interruptsthebeach’snatural landwardmigration. Retreat Now,ontheother hand, removestheaforementionedinfrastructureimpedimentsandallowsforimmediatebeachrestorationandexpansion.

Our positionisfurther bolsteredbyboththeLasEncinasCreekRestorationAlternativesAnalysisandtherecent LongTermMaster Plan/AdaptiveManagement Plan, whichwerecompletedbyGHDaspart of thegrant-fundeddeliverablesfor thisproject. Theseanalysesconfirmthat shouldtheexistingroadwayremainafter trafficrealignment iscompleted, thebeachwill becompletelylost with1.7feet of sealevel rise. Consideringthat thisstretchof beachalreadydisappearsat hightides, it will beunusablemuchsooner fromapractical perspective.

However, byremovingtheroadwayandimplementingnature-basedbeachpreservationmeasuresinitsplace, wecancreatearesilient beachthat withstandsanextremesealevel risescenarioof 6.6feet. Suchabeachwill providetremendouspublicvalueinanareadominatedbybluff-backedbeachesthat faceanexistential threat fromrisingseasinthenext 50-75years.

Toillustratethesepoints, we’veincludedSection4.3.3.2: Trade-offsbetweenPhasedAdaptationandRetreat Now, of theLongTermMaster Plan/AdaptiveManagement Plantothisletter. Pleasetakeamoment toreviewthepagebelow, especiallyif youdonot havetimetoreviewtheentire30pagedocument.

Lastly, thereisnoreasontolet thecurrent lackof identifiedfundingact asanimpediment tosupportingRetreat Now. Fundinghasnot yet beenidentifiedor pursuedfor either of theproposedoptions. Therefore, fundingshouldbepursuedwiththeRetreat Nowvisioninmindbecauseit yieldsbetter resultsfor thebeach, publicaccess, andtheadjacent wetlandhabitat. If,after pursuingfunding, thereisnot enoughavailabletocompletetheentireproject at once, then(andonlythen) thePhasedAdaptationpathcanbeconsideredasanalternativeoption. Inourestimation, lackof availablefundingistheonlysensiblereasontocompletethisproject inphases.

Thankyoufor theopportunitytocomment onthisitem. Surfrider iscountingontheCityCounciltoaffirmthat Retreat Nowisthepreferred, best optionfor theSouthCarlsbadBoulevardClimateAdaptationProject alongtheone-milestretchfromIslandWaytoSolamar Drive. Weunderstandthisproject hasalongwaytogobeforecompletion, but askthat youdirect citystaff tokeeptheireyesontheprize. Wehaveanopportunitytomoveathreatenedroadwayout of harm’swaybeforeit’stoolate, whileat thesametimecreatingaclimate-resilient publicbeachin Phone: 858.800.2282 | [email protected] | surfridersd.org3900ClevelandAve., Ste201, SanDiego, CA92103 placeof onethat israpidlyeroding. It’sawin-winfor all parties, especiallyour childrenwhodeservethesameaccesstobeachesthat weenjoytoday.

Sincerely,
MitchSilversteinSanDiegoCountyPolicyCoordinatorTheSurfrider [email protected] JimJaffeeandKristinBrinnerBeachPreservationCommitteeCo-LeadsSurfrider [email protected] BenRubensonExecutiveCommitteeChair &District 3residentSurfrider [email protected] Phone: 858.800.2282 | [email protected] | surfridersd.org3900ClevelandAve., Ste201, SanDiego, CA92103

GHD | City of Carlsbad | South Carlsbad Climate Adaptation Project 21

South Carlsbad Blvd Climate Adaptation Project -Adaptive Management Plan

Table 1. Summary of Key Advantages, Disadvantages and Trade-offs between the Phased Adaptation and Retreat Now Options Category Phased Adaptation Retreat Now
Permitting and
Construction:

Can all elements of the
design be implemented
at once?
No. This option would occur in phases.

Construction, disruption to traffic flows, and
permitting would need to occur one or more times
once a trigger is met.

Yes. This option would perform all
actions at one time, not requiring any
additional permitting or construction.

Financial:

Higher costs to construct because it
includes the demolition costs of the
bridge, rock revetment and roadway.

This option would need to protect the
existing EWA outfall, likely with rock
reused from onsite materials
(deconstructed revetment), which adds
additional cost in the short-term.

This option may be less expensive over
a 20-50 year period because it would
construct everything at once in today’s
dollars (i.e., reduced escalation).

Coastal Hazards &
Public Safety:

Triggers described within this plan identify when the
space needs to be abandoned.

Yes. This option would relocate public
infrastructure out of the Coastal Hazard
Zone for the next 100 years.

Recreational uses of the abandoned
space would be protected through
nature-based design techniques (e.g.,
cobble-sand dune system).

Sandy Beach:

Yes. This option is anticipated to result in
a localized increase in beach area
immediately through removal of the
roadway. Preliminary modeling suggests
this pocket beach may sustain through

6.6’ of SLR as the beach and created
dune are allowed to transgress
landward.

Access:

What are the
differences in public
access and use
between the two
options?

Recreational opportunities along the beach would
remain constrained due to increasingly narrow
beach widths as sea levels rise.

Active transportation uses would be
focused along the enhanced roadway,
which would be located further from the
coast and elevated, a changed user
experience from present day.

The removal of the southbound roadway
would enhance existing, and create new,
recreational opportunities from the
additional beach space.

Habitat Restoration:

This option restores the southbound
roadway to coastal strand habitat
immediately. The coastal strand habitat
has more space and time to establish
prior to increased water levels and wave
attack, making it a more resilient system.
1 Ana Alarcon
From: Mitch Silverstein <[email protected]> Sent: Monday, April 22, 2024 1:07 PM
To: City Clerk; Council Internet Email
Cc: [email protected]; Ben Rubenson
Subject: Public Comment on Item #6, S Carlsbad Blvd.

Attachments: Carlsbad CC April 21 2024, Retreat Now.pdf Honorable Mayor, City Councilmembers, and City Clerk,

On behalf of Surfrider Foundation San Diego County, please accept the attached comments re: Item #6: Adaptive management plan for the South Carlsbad Boulevard Climate Adaptation Project on tomorrow's City Council Agenda (4/23/24).

Please reach out if you have any questions.

In gratitude,

Mitch Silverstein | San Diego County Policy Coordinator | Surfrider Foundation 619.736.7757 | [email protected]
he/him (what's this)

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From: Council Internet Email
Sent: Monday, April 22, 2024 12:29 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Jim Amundson <[email protected]>
Sent: Monday, April 22, 2024 12:24 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 12:29 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: David Kinney <[email protected]>
Sent: Monday, April 22, 2024 12:23 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

K9Honorable Mayor and City Council,

Thank you for your leadership.

David Kinney

Sent from my iPad
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:29 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: James Haggard <[email protected]>
Sent: Monday, April 22, 2024 11:48 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

I have been surfing and using this beach since 1986. Of course I am always cleaning up beach trash and will continue to do so.

Thank you for your leadership.

Carlsbad Resident
6869 Batiquitos Dr
Carlsbad, CA 92011

James Haggard

Sent from my iPhone
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:28 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Brian Nett <[email protected]>
Sent: Monday, April 22, 2024 11:34 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Sincerely,
Brian C Nett DDS, MSD
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:28 PM
To: City Clerk
Subject: FW: Council Item #6 4.23.24, Carlsbad Blvd - please support Retreat Now

From: S V <[email protected]>
Sent: Monday, April 22, 2024 11:30 AM
To: City Clerk <[email protected]>; Council Internet Email <[email protected]> Subject: Council Item #6 4.23.24, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

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From: Council Internet Email
Sent: Monday, April 22, 2024 12:28 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Jacqueline Pines <[email protected]>
Sent: Monday, April 22, 2024 11:26 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Dear Honorable Mayor and City Council,

As a Carlsbad resident this is very important to me. Thank you,

Jacqueline
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:27 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Mary Ella Holtam <[email protected]>
Sent: Monday, April 22, 2024 11:25 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, a surfer, and a resident of Encinitas, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

Thank you for your leadership.

Mary Holtam
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:27 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Erik Lorton <[email protected]>
Sent: Monday, April 22, 2024 11:23 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Best,
Erik
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1 Ana Alarcon
From: Council Internet Email
Sent: Monday, April 22, 2024 12:27 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Danielle Zuniga <[email protected]>
Sent: Monday, April 22, 2024 11:23 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Danielle Zuniga
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:27 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Julie Wartell <[email protected]>
Sent: Monday, April 22, 2024 11:16 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Julie Wartell
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From: Council Internet Email
Sent: Monday, April 22, 2024 12:26 PM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Dave Kaplan <[email protected]>
Sent: Monday, April 22, 2024 11:13 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Dave Kaplan
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From: John DeLand <[email protected]>
Sent: Monday, April 22, 2024 11:55 AM
To: City Clerk
Subject: Item 6, S Carlsbad Blvd
Please support ‘Project Retreat’ regarding S Carlsbad Blvd.

Please secure funding to move the road. (It is inevitable that the road must be moved or it will be removed by the ocean.) this will allow the natural erosion that will save our beaches. We must be far sighted in saving our beaches!

Thanks,
John DeLand
Carlsbad. CA
760-577-1251
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From: David Newman <[email protected]>
Sent: Monday, April 22, 2024 11:20 AM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

Thank you,

David Newman
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1 Ana Alarcon
From: Andie <[email protected]>
Sent: Monday, April 22, 2024 11:18 AM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

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1 Ana Alarcon
From: Council Internet Email
Sent: Tuesday, April 23, 2024 10:06 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now -----Origi
nal Message-----
From: cyndi ringoot <[email protected]>
Sent: Tuesday, April 23, 2024 9:21 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now Honorable Mayor and City Council,
Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative.

Thank you for your leadership.

CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.

All Receive - Agenda Item #____
For the Information of the:

CITY COUNCIL
Date: ______ CA____ CC____
CM____ ACM____ DCM (3)____
6 4/23/24 x x
x x x
1 Ana Alarcon
From: cyndi ringoot <[email protected]>
Sent: Tuesday, April 23, 2024 9:21 AM
To: City Clerk
Cc: Council Internet Email
Subject: Item #6, Carlsbad Blvd - please support Retreat Now Honorable Mayor and City Council,

Thank you for your leadership.

-----Original Message-----
From: elaine brodie <[email protected]>
Sent: Tuesday, April 23, 2024 3:37 AM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

Sent from my iPhone
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From: Council Internet Email
Sent: Tuesday, April 23, 2024 8:04 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

-----Original Message-----
From: Mary Green <[email protected]>
Sent: Monday, April 22, 2024 10:42 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Please do not consider moving the current roadway and bike infrastructure. So many north county coastal cities have ruined our cycling, walking and jogging along the coast. Consider instead forfeiting the beach with more sand and replenishing the sand from areas off the coast that have gained sand over the years due to the erosion.

Thank you for your leadership.

Sent from my iPhone
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From: Council Internet Email
Sent: Tuesday, April 23, 2024 8:04 AM
To: City Clerk
Subject: FW: Item #6, Carlsbad Blvd - please support Retreat Now

From: Vicki Conlon <[email protected]>
Sent: Monday, April 22, 2024 9:41 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

From: Kelly Werner <[email protected]>
Sent: Monday, April 22, 2024 6:59 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

From: John Varga <[email protected]>
Sent: Monday, April 22, 2024 6:52 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership.

From: Kim <[email protected]>
Sent: Monday, April 22, 2024 5:13 PM
To: City Clerk <[email protected]>
Cc: Council Internet Email <[email protected]>
Subject: Item #6, Carlsbad Blvd - please support Retreat Now

Honorable Mayor and City Council,

Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative. By prioritizing "Retreat Now," you can direct staff to aggressively pursue current state and federal funding opportunities with the greater vision in mind. Saving the beach is just as important as moving the threatened road, which already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more triggers. We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments. A protected bike and pedestrian lane can be put anywhere, but a beach cannot. Preserving coastal resources, and our access to them, is of paramount concern. Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept. Thank you for your leadership.

Sincerely,
Kim Perszyk

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1 Ana Alarcon
From: Paul Gilbert <[email protected]>
Sent: Monday, April 22, 2024 10:13 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation I frequent Carlsbad and it’s beaches. So much so I will shortly close escrow on a property in Lakeshore Gardens and look forward to being a part of the community instead of just a visitor.

I am appreciative of your leadership on this important coastal adaption project.

Since staff is not asking for any further City Council action at this time, please consider a motion to support "Retreat Now" as the preferred concept (as the Beach Preservation Commission did).

Thank you.

Paul R Gilbert
714-887-9584

Get Outlook for iOS
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1 Ana Alarcon
From: John Teevan <[email protected]>
Sent: Monday, April 22, 2024 7:38 PM
To: City Clerk
Subject: Comments on Item #6, S Carlsbad Blvd Adaptation Carlsbad City Council,

In order to save the beach at Las Encinas Creek, please support "Retreat Now" as the preferred project alternative and direct staff to seek additional funding with that vision in mind.

Thank you for considering my comments.

Sincerely,
--
John P Teevan III
805 Hawksview Place
Chula Vista, CA 91914
Home: (619) 830-6501
Mobile: (619) 948-9440
CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.

From: Nikki Matosian
To: City Clerk
Subject: Item 6 comment for 4/23
Date: Tuesday, April 23, 2024 1:10:39 PM
From: Mary Green <[email protected]>
Sent: Monday, April 22, 2024 10:47 PM
To: Communications <[email protected]>
Subject: Re: Reminder: South Carlsbad climate adaptation project at City Council Please do NOT ruin our coastal highway and bikeway!!! It’s the only lovely part remaining in north county where we can ride and see our coastline up so close. Restore the beach instead, like Solana Brach Sent from my iPhone
On Apr 21, 2024, at 6:30
PM, City of Carlsbad <communications-
[email protected]> wrote:

April 23 - Adaptive management plan discussed
View this email in your web browser
The Carlsbad City Council will receive a report on an adaptive management plan as part of the South Carlsbad Boulevard climate adaptation project on Tuesday, April 23, 5 p.m.

The report is about how a 1-mile segment of south Carlsbad Boulevard could be managed to protect people, the environment and infrastructure from the effects of anticipated sea level rise.

All Receive - Agenda Item #____
For the Information of the:

CITY COUNCIL
Date: ______ CA____ CC____
CM____ ACM____ DCM (3)____
6 4/23/24 x x
xxx
Ill
Tuesday, April 23
5 p.m.

Carlsbad City Hall
1200 Carlsbad Village Drive
Agenda, staff report
Watch online

How to participate
Community members may attend this public meeting and provide comments.

Email [email protected]
In person at City Hall, April 23, 5 p.m.

Next steps:

· The grant project and funding ended on Feb. 28, 2024. · Staff will continue to pursue related grant funding opportunities. · Staff plan to request funds during the fiscal year 2024-25 budget development process to initiate the studies needed to create a m
final scope of work and a funding strategy for the 1-mile segment between Manzano Drive and Island Way.
· At this time, the City Council has not directed staff to proceed with the next steps of the larger 3-mile segment to La Costa Avenue.

Other news

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City of Carlsbad | Website

City of Carlsbad | 1200 Carlsbad Village Drive, Carlsbad, CA 92008 Unsubscribe [email protected]
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Sent by [email protected]
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1 Ana Alarcon
From: Kristen Duncan <[email protected]>
Sent: Tuesday, April 23, 2024 11:40 AM
To: City Clerk
Cc: Council Internet Email
Subject: Item #6, Carlsbad Blvd - please support Retreat Now Honorable Mayor and City Council,

Thank you for your leadership.

Kristen Duncan

Sent from my iPhone
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From: Tiffany Brown <[email protected]>
Sent: Tuesday, April 23, 2024 3:34 PM
To: City Clerk
Cc: Council Internet Email
Subject: Item #6, Carlsbad Blvd - please support Retreat Now Honorable Mayor and City Council,
Thank you for your leadership on this important coastal adaptation project. As a frequent user of Carlsbad's beaches, I urge you to show leadership on this item and officially record your support of "Retreat Now" as the preferred project alternative. By prioritizing "Retreat Now," you can direct staff to aggressively pursue current state and federal funding opportunities with the greater vision in mind. Saving the beach is just as important as moving the threatened road, which already floods and will suffer more damage and inundation as sea levels rise. There is no need to wait for more triggers. We need a beach with safe access and towel space, not an inaccessible beach lined with dangerous rock revetments. A protected bike and pedestrian lane can be put anywhere, but a beach cannot. Preserving coastal resources, and our access to them, is of paramount concern. Meanwhile, the preferred design for the realigned roadway incorporates a "Complete Streets" design, featuring wide bike and pedestrian lanes. Since staff is not asking for any further City Council action at this time, please follow the example of your Beach Preservation Commission and make a motion to support "Retreat Now" as the preferred concept. Thank you for your leadership.

Tiffany Brown
CAUTION: Do not open attachments or click on links unless you recognize the sender and know the content is safe.

All Receive - Agenda Item #____
For the Information of the:

CITY COUNCIL
Date: ______ CA____ CC____
CM____ ACM____ DCM (3)____
6 4/24/24 xx
xxx
Adaptive Management Plan for the
South Carlsbad Boulevard Climate
Adaptation Project
Tom Frank, Transportation Director/City Engineer
Katie Hentrich, Senior Program Manager
April 23, 2024
( City of
Carlsbad

RECOMMENDED ACTION
Receive a report on how a 1-mile segment
of south Carlsbad Boulevard could be
managed to protect people, the
environment and infrastructure from the
effects of anticipated sea level rise.

ITEM 6: SOUTH CARLSBAD BOULEVARD
22 ( City of
Carlsbad
TODAY’S PRESENTATION
• Overview of grant study
• Adaptive management plan
3 ITEM 6: SOUTH CARLSBAD BOULEVARD
( City of
Carlsbad

PROJECT AREA
4 ITEM 6: SOUTH CARLSBAD BOULEVARD
- South Carlsbad Coastline Project /
South Carlsbad Boulevard
Climate Adaptation Project
-a a:

Carlsbad Blvd
• Sea Level Rise Vulnerability Assessment
• General Plan Safety Element
• Climate Emergency Declaration
• Coastal Development Permit
• California Complete Streets Act
• General Plan Mobility Element
• Sustainable Mobility Plan
• Engineering Standards
• Climate Action Plan

CITY OF CARLSBAD POLICIES AND PLANS
5 ( City of
Carlsbad

COASTAL DEVELOPMENT PERMIT
• Requires a long-term Hazard Management Plan
• Measures may include phased implementation,
soft protection, managed retreat, focused or
small-armoring
• Include potential phasing with timelines
6 ITEM 6: SOUTH CARLSBAD BOULEVARD
( City of
Carlsbad

SCOPE OF WORK
• Conceptual design of realigned roadway
• Adaptive management plan
• Cliff erosion assessment
• Habitat restoration analysis of Las Encinas Creek
area
• Funding ended Feb. 28, 2024
7 ITEM 6: SOUTH CARLSBAD BOULEVARD
( City of
Carlsbad

CONCEPTUAL DESIGN
8 • Move and protect infrastructure from
hazards caused by sea level rise
• Provide a safe and efficient roadway for all
modes of travel
• Promote walking, biking and other forms
of active transportation
• Slow down traffic along the coastline for
safety
ITEM 6: SOUTH CARLSBAD BOULEVARD
( City of
Carlsbad
9 • Retreat now – move infrastructure away
from coast all at one time
• Phased adaptation – move car traffic to
east, repurpose southbound lane for
walking and biking paths and move as
needed
ITEM 6: SOUTH CARLSBAD BOULEVARD

ADAPTIVE MANAGEMENT PLAN
( City of
Carlsbad
10 CLIMATE ADAPTATION SEGMENTS
ITEM 6: SOUTH CARLSBAD BOULEVARD
2120 Cliff Hazard Zone
Palomar Airport Road Solamar Drive Las Encinas Creek Island Way ( City of
Carlsbad
11 PALOMAR AIRPORT ROAD
ITEM 6: SOUTH CARLSBAD BOULEVARD
Trigger Action Lead time
Pedestrian walkway
15’ from cliff edge
Shared corridor for walking and biking
(similar to area like the Coastal Rail Trail)
3-5 years
Bikeway 15’ from cliff
edge
Relocate trail inland or demolish corridor and
redirect bikes and pedestrians to the sidewalk
and bike lane next to vehicle lane
3-7 years
Relocated bikeway
15’ from cliff edge
Demolish corridor and redirect bikes and
pedestrians to the sidewalk and bike lane next
to vehicle lane
3-5 years
( City of
Carlsbad
12 SOLAMAR DRIVE
ITEM 6: SOUTH CARLSBAD BOULEVARD
Trigger Action Lead time
Walking and biking
path 15’ from cliff
edge
Transition roundabout to single lane with
traffic signal
5-10 years
( City of
Carlsbad
13 LAS ENCINAS CREEK
ITEM 6: SOUTH CARLSBAD BOULEVARD
Trigger Action Lead time
Rock revetment
needs significant
repair that exceeds
$5 million
Demolish corridor and redirect pedestrians
and bikes to sidewalk and bike lane next to
vehicle lane
5-10 years
Corridor is flooded
10 times in one year
Demolish corridor and redirect pedestrians
and bikes to sidewalk and bike lane next to
vehicle lane
5-10 years
( City of
Carlsbad
14 • CJ Habitat Enhancement
Area (HEA)
Tidal Wetland
Establis hment Area
60 120 180
Feet
~ Pro1e~1on lantiert Cooformal Come
H()n20nl:al Daum: N01'1t\Amffltall 15183
Gri::1: NAO 1983 Sb,tGPlnnc: C11lifomia Vl APS 0406 Fc:c:I DEMO EXISTING SB ROAD ,~ .. -'--"

PRISM & CONSTRUCT

DUNE SYSTEM
15 ISLAND WAY
ITEM 6: SOUTH CARLSBAD BOULEVARD
Trigger Action Lead time
No trigger identified
since relocated
infrastructure
outside of the coastal
hazard zone

N/A N/A
( City of
Carlsbad
16 ITEM 6: SOUTH CARLSBAD BOULEVARD

COMMUNITY ENGAGEMENT
• Adaptive management plan outreach
focused on public agencies
• California Coastal Commission
• California State Parks
• Encinas Wastewater Authority
• Comments incorporated into plan
• Beach Preservation Commission – minute
motion to recommend retreat now
17 • One of few plans created in State of
California
• Further analysis needed before
recommending an approach
ITEM 6: SOUTH CARLSBAD BOULEVARD

ADAPTIVE MANAGEMENT PLAN
( City of
Carlsbad
18 • Funding request for fiscal year 2024-25 for
environmental studies
• Consider larger 3-mile south Carlsbad Blvd
project
ITEM 6: SOUTH CARLSBAD BOULEVARD

NEXT STEPS
( City of
Carlsbad

RECOMMENDED ACTION
ITEM 6: SOUTH CARLSBAD BOULEVARD
Receive a report on how a 1-mile segment
of south Carlsbad Boulevard could be
managed to protect people, the
environment and infrastructure from the
effects of anticipated sea level rise.
( City of
Carlsbad

Carlsbad City CouncilApril 23, 2024

Carlsbad City Council
April 23, 2024