HomeMy WebLinkAbout2020-08-19; Planning Commission; ; CDP 2018-0031/SUP 2018-0005/SUP 2018-0006 (PUB 2018-0014) – EL CAMINO REAL AT CANNON ROAD BRIDGE IMPROVEMENTS, CIP PROJECT NO. 6042 and 6056
Item No.
Application complete date: July 22, 2020
P.C. AGENDA OF: August 19, 2020 Project Planner: Christina Bustamante
Project Engineer: Brandon Miles
SUBJECT: CDP 2018-0031/SUP 2018-0005/SUP 2018-0006 (PUB 2018-0014) – EL CAMINO REAL AT
CANNON ROAD BRIDGE IMPROVEMENTS, CIP PROJECT NO. 6042 and 6056 – Request
for approval of a Coastal Development Permit and two Special Use Permits to allow for
the El Camino Real (ECR) at Cannon Road bridge improvements which includes the repair
and reconstruction of the ECR bridge over Agua Hedionda Creek and construction of a
new pedestrian bridge, Capital Improvement Program (CIP) 6042 and 6056 (Project)
located south of the El Camino Real and Cannon Road intersection and within the Mello
II Segment of the Local Coastal Program (LCP) and Local Facilities Management Zones 8,
14, 15, and 24. The project site is within the appeal jurisdiction of the California Coastal
Commission. The City Planner has determined that the project belongs to a class of
projects that the State Secretary for Resources has found do not have a significant impact
on the environment, and it is therefore categorically exempt from the requirement for
the preparation of environmental documents pursuant to Section 15301 (c) Existing
Facilities, and Section 15301 (d) - Replacement or Reconstruction – of the state CEQA
Guidelines.
I. RECOMMENDATION
That the Planning Commission ADOPT Planning Commission Resolution No. 7378 APPROVING Coastal
Development Permit CDP 2018-0031, Special Use Permit SUP 2018-0005 and Special Use Permit 2018-
0006 based upon the findings and subject to the conditions contained therein.
II. PROJECT DESCRIPTION AND BACKGROUND
The project site is located south of the ECR and Cannon Road intersection, more specifically on the east
and west sides of the ECR bridge over the Agua Hedionda Creek. The project area occurs within portions
of five different parcels. The northbound lanes of the bridge are currently striped for a dedicated left turn
lane, two through lanes, and a dedicated right-turn lane with a combined 6-foot bicycle lane. The sidewalk
along the eastern side of the ECR bridge is discontinuous for 250 feet between Cannon Road and the
southern end of the bridge. The existing concrete and steel bridge barriers are damaged in some locations
and are obsolete, as they do not meet current Federal Highway Administration (FHWA) crash standards.
There are numerous overhead utilities along the eastern edge of the bridge. Other utilities in the vicinity
consist of large underground water main, conduits mounted to the edge of the ECR bridge deck, and two
fuel lines and one gas line underground. There is existing vegetation on both sides of the bridge. On the
west side are various native plants including riparian scrub, freshwater marsh, and coastal sage scrub. On
the east side of the bridge are existing ornamental non-native plants including a variety of grasses,
eucalyptus trees, pine trees and palm trees.
Table A below includes the General Plan designations, zoning and current land uses of the project site and
surrounding properties.
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TABLE A – LAND USE DESIGNATION AND ZONING OF SITE AND SURROUNDING SITES
Location General Plan Designation Zoning Current Land Use
Site
Residential (R-8), Open Space
(OS)
RMHP Residential
Mobile Home Park
(RMHP), Open Space
(OS)
Residential/Open Space
North Open Space (OS) Planned Community
(P-C)
Open Space/ Residential
South Residential (R-8) One-Family Residential
(R-1)
Residential
East
Residential (R-8), Open Space
(OS)
RMHP Residential
Mobile Home Park
(RMHP), Open Space
(OS),
Residential
West
Open Space (OS) Open Space (OS),
Planned Community
(P-C)
Vacant Land
Proposed Construction: The project proposes improvements to the ECR bridge over the Agua Hedionda
Creek and a new pedestrian bridge. Grant deeds of easements have been acquired from The Foothills at
Carlsbad Homeowners Association and Rancho Carlsbad Owners’ Association, Inc.; and acquisition of
grant of temporary construction easements from Carlsbad Canterbury Association, Evans Point
Homeowners Association, The Foothills at Carlsbad Homeowners Association and Rancho Carlsbad
Owners’ Association, Inc., for the improvements. The project proposes construction of a new concrete
cantilever slab on top of the existing cantilever slab, to widen the existing western sidewalk from four (4)
feet to six (6) feet. The existing pedestrian railing would be relocated to the new sidewalk edge and new
barriers would be installed to replace the existing obsolete bridge railings.
The sidewalk along the eastern side of ECR is discontinuous for 250 feet between Cannon Road and the
southern end of the bridge. To complete this missing section of sidewalk, a separate pedestrian bridge is
proposed 25 feet upstream of the eastern side of the bridge. The pedestrian bridge would be a
prefabricated steel truss bridge, 8 feet wide and 120 feet long, with 6'-5" tall railings, connecting the
sidewalk along ECR to the sidewalk at the Cannon Road intersection. The bridge would be installed at an
elevation of approximately 46 feet above sea level. The pedestrian bridge will be constructed on new
concrete abutments aligned with the existing ECR bridge abutments, which will be supported on deep
micropile foundations. Construction of the new pedestrian bridge abutments is expected to occur from
the creek bed and from the parkways above. A portion of the existing brick sound wall behind the
southeastern sidewalk will be demolished to allow for the installation of the new pedestrian bridge. The
sound wall would be reconstructed and realigned inside the property line of the adjacent Rancho Carlsbad
Owner’s Association. The vertical profile of the proposed steel truss pedestrian bridge would be relatively
flat with the deck approximately 18 inches higher than the top of the existing ECR bridge to achieve
positive freeboard clearance from flows within Agua Hedionda Creek during a 100-year storm event. A
hydraulic analysis was completed to verify that the addition of the pedestrian bridge would be above the
level of a flood during a 100-year storm event and would not impact the existing water way. Additional
right-of-way was acquired along the eastern edge of the project to accommodate this new pedestrian
bridge.
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Numerous overhead utilities along the eastern edge of the bridge must be relocated to accommodate the
proposed project. Other utilities in the vicinity consist of a large underground water main, conduits
mounted to the edge of the ECR bridge deck, and two fuel lines and one gas line underground along the
proposed alignment of the pedestrian bridge. San Diego Gas & Electric will be installing a 5-inch electrical
conduit duct bank within the new pedestrian bridge. Excavation will be required on both sides of the
existing bridge structure for connection to existing conduit. Once this work is completed, the two
overhead electric distribution poles and associated hardware will be removed. Utilities attached to the
eastern edge of the ECR Bridge deck would be protected in place. Affected utilities will either be
abandoned or relocated to the new pedestrian bridge.
Concrete and steel barriers along both edges of the bridge deck will be removed and new standard bridge
barriers will be installed. New rails will be concrete, Type 80 for coastal zones, illustrated details can be
found on plan sheets 14 through 16. Additionally, the new eastern bridge railing requires impact
protection to meet current crash standards. This will likely be in the form of a compact crash-absorbing
barrier assembly. The new bridge barrier along the western edge of the bridge deck will be offset less than
two feet from its original alignment, necessitating reconstruction of the approaching metal beam guard
rail. This guard rail would also be replaced with a crash barrier, similar to the eastern barrier railing
approach. The outward alignment of the barrier will result in the widening of the southbound bicycle lane.
Native vegetation, such as riparian scrub, freshwater marsh, and coastal sage scrub are present in the
western section of the project area and will be temporarily disturbed. Temporary scaffolding will be placed
within in this area to work on the concrete cantilever that will be placed on the western side of the bridge.
The plants will only be disturbed by scaffolding and light foot traffic from workers. The construction is
expected to last a relatively short amount of time, and thus the native habitat is expected to recover. No
permanent impacts are expected. The section of the creek underneath the bridge is completely
unvegetated and will not be disturbed during construction.
Ornamental vegetation, such as non-native grasses, pine trees, Mexican fan palms, eucalyptus trees, and
acacia shrubs, are present in the eastern section of the project area and will be disturbed. The vegetation
in the area is ornamental vegetation typically associated with residential, and roadside development. The
non-native ornamental grass disturbed during construction will be replanted with a hydroseed native
grass mix upon completion of the proposed project. There are several non-native ornamental trees that
will be removed during the construction of the pedestrian bridge located adjacent to the Rancho Carlsbad
community, east of the ECR bridge. The location and list of trees that would be removed is detailed on
sheet 37 of the plans. Some of these trees are within the public right of way and the others are within
property owned by the Rancho Carlsbad Owner’s Association. The trees would be removed to
accommodate a staging area for equipment used during construction to install the prefabricated steel
truss bridge, and demolition and reconstruction of a sound wall. Some of the trees are located near high
voltage lines, some are similar to other tree types that have fallen in the area during storm events. For
safety and maintenance reasons, most of these trees outside of the public right-of-way will not be
replaced. The other trees removed that do not pose a safety hazard will be replaced in a manner that is
consistent with best practices for floodplain management and the city’s Community Forest Management
Plan. More specifically, the Community Forest Management Plan requires the removed city owned trees
to be replaced at a 2:1 ratio. There are four city owned trees that will be removed and then replaced with
twelve trees. A detailed illustration of the trees to be planted as replacements can be found on sheet 38
of the plans. In coordination with the city of Carlsbad Parks and Recreation Department, these twelve
trees will be placed within the El Camino Real corridor with Crepe Myrtle trees and Brisbane Box trees.
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The Rancho Carlsbad Owner’s association has selected jacaranda trees and camphor trees as
replacements for the trees removed on their property. Appropriate measures will be taken to comply with
City Council Policy No. 4 Street Trees, Carlsbad Municipal Code Chapter 11.12 Trees and Shrubs, and the
Community Forest Management Plan (CFMP).
Alternatives to the proposed project were considered in partnership with the Parks and Recreation
Department. Alternatives included temporarily closing a section of El Camino Real adjacent to the project
area to use for construction staging and installing a new cantilever edge to accommodate a walkway on
the east side existing ECR bridge. A temporary closure of a portion of El Camino Real, a main arterial road,
would cause disruption to regular vehicle traffic and as a result that option was not considered viable. In
order to add an additional lane to the east side of the ECR bridge, an additional cantilever would need to
be installed. The width and weight of an additional cantilever on the east side of the bridge to
accommodate a pedestrian walkway could not be supported by the existing El Camino Real bridge,
because it would have compromised the structural integrity of the existing bridge, therefore that option
was not viable. In addition, the existing bridge is within the 100-year floodplain and the new proposed
pedestrian bridge will be constructed above the floodplain. The current proposed project, including the
pedestrian bridge, is the most viable and feasible option.
The temporary project construction footprint will extend beyond the current right-of-way along both sides
of the bridge. A portion of the right-of-way will be permanently extended as a result of this project. Access
to the creek bed during construction is anticipated either from the northeastern embankment or an access
road from a private driveway, several hundred feet upstream. A private gated road and lot adjacent to
the northeastern embankment may be considered as a contractor staging area. After construction of the
bridge improvements, sidewalks, curbs, and gutters approaching the bridge will be rebuilt. The existing 5-
foot-wide sidewalk along the eastern side of ECR, east of the bridge, may also require widening and will
be widened if determined to be appropriate on site during construction.
III. ANALYSIS
The project is subject to the following regulations and requirements:
A. Residential (R-8), and Open Space (OS) General Plan Designations;
B. Open Space Zone, RMHP Residential Mobile Home Park Zone;
C. Coastal Development Permit - Coastal Development Regulations for the Mello II Segment
of the Local Coastal Program (Chapter 21.201) and the Coastal Resource Protection
Overlay Zone (CMC Chapter 21.203);
D. Special Use Permit – Floodplain Management Regulations (CMC Chapter 21.110);
E. Special Use Permit - Scenic Preservation Overlay Zone regulations (CMC Chapter 21.40
and the El Camino Real Corridor Development Standards); and
F. Growth Management (CMC Chapter 21.90);
The recommendation for approval of this project was developed by analyzing the project’s consistency
with the applicable regulations and policies. The project’s compliance with each of the above regulations
is discussed in detail in the sections below.
A. Residential (R-8), and Open Space (OS) General Plan Designation
The General Plan Land Use designation for the property is R-8 Residential, which allows residential
development at a density range of 4-8 dwelling units per acre (du/ac) with a Growth Management Control
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Point (GMCP) of 6 du/ac. The project does not include residential units and therefore would not conflict
with the allowable density within the R-8 Residential General Plan land use designation.
The site has an Open Space (OS) General Plan Land Use designation. The OS designation is intended for
areas that offer natural resources (habitat, wetlands, beaches), areas for production of resources
(agriculture, reservoirs), and recreation and aesthetics areas (parks, beaches). The proposed ECR bridge
repairs and improvements will serve the Carlsbad residents by providing a connecting pedestrian bridge
from the south eastern side of the ECR bridge to Cannon Road, widening pathways for pedestrian and
bicycle access and replacing old guardrails. The repairs and improvements to the bridge would protect the
Agua Hedionda Creek as the bridge would keep vehicles, and people separate from the creek.
Table B identifies General Plan goals and policies relevant to the proposed project and describes the
project’s compliance with the General Plan.
TABLE B – GENERAL PLAN COMPLIANCE
Element Use, Classification, Goal,
Objective, or Program
Proposed Uses & Improvements Comply?
Land Use
and
Community
Design
Goal 2-G.16
Enhance Carlsbad’s character and
image as a desirable residential,
beach and open-space oriented
community.
Goal 2-G.18
Ensure that new development
fosters a sense of community and
is designed with the focus on
residents, including children, the
disabled and the elderly, by
providing: safe, pedestrian-
friendly, tree-lined streets;
walkways to common
destinations such as schools,
bikeways, trails, parks and stores;
homes that exhibit visual
diversity, pedestrian-scale and
prominence to the street; central
gathering places; and recreation
amenities for a variety of age
groups
Repairing and replacing damaged or
obsolete public facilities helps to
maintain the quality of public
infrastructure and preserve
Carlsbad’s character.
Providing a connecting segment from
the northbound ECR to eastbound
Cannon Road by constructing a new
pedestrian bridge helps to ensure
pedestrian safety and provides a
recreation amenity that can be
enjoyed by a variety of age groups.
Yes
Yes
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Element Use, Classification, Goal,
Objective, or Program
Proposed Uses & Improvements Comply?
Land Use and
Community
Design
Policy 2-P.48
Enhance walkability on a
citywide scale by installing
benches and
transit shelters and adding
landscaping, wayfinding
signage, public art, and
pedestrian-scaled lighting.
Consider ways to improve rail
and freeway overpass/
underpass areas, with lighting,
sidewalk improvements and
public art.
Adding a pedestrian bridge to the
easterly side of the ECR bridge would
provide a connection from the
sidewalk segment on ECR south of
the bridge to eastbound Cannon
Road. A connecting segment does not
currently exist and adding this
connecting segment will enhance
walkability.
A new concrete cantilever slab will be
added on top of the existing
cantilever to widen the existing
western sidewalk from 4 feet to 6
feet. The new bridge barrier will be
offset several feet from its original
alignment and placed on the outside
of the cantilever which will result in
the widening of the southbound
bicycle lane.
Yes
Mobility Goal 3-G.2
Improve connectivity for
residents, visitors and
businesses.
Goal 3-G.3
Provide inviting streetscapes
that encourage walking and
promote livable streets.
Goal 3-G.6
Protect and enhance the visual,
environmental and historic
characteristics of Carlsbad
through sensitive planning and
design of scenic transportation
corridors.
The addition of a pedestrian bridge
along the easterly side of ECR bridge
will provide pedestrian connectivity.
The improved bridge guardrails,
improved bridge deck, added
pedestrian bridge and flower baring
trees will provide an inviting
streetscape and help to promote
multiple modes of transportation
such as walking and biking.
Maintaining and improving the
quality and function of the ECR bridge
and pedestrian amenities helps to
support the scenic transportation
corridor of ECR. Careful consideration
was given for the selection of trees
and design of the bridge to
complement the ECR corridor.
Yes
Yes
Yes
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Element Use, Classification, Goal,
Objective, or Program
Proposed Uses & Improvements Comply?
Mobility Goal 3-G.26
Identify and implement
necessary pedestrian
improvements on
streets where pedestrians are
to be accommodated, with
special emphasis on providing
safer access to schools, parks,
community and recreation
centers, shopping districts, and
other appropriate facilities.
Goal 3 -G.29
Evaluate incorporating
pedestrian and bicycle
infrastructure within
the city as part of any planning
or engineering study, private
development, or capital
project.
The repairs and improvements will
provide safer access for residents
that walk to Sage Creek High School,
Carlsbad Highlands Ecological
Reserve and Agua Hedionda Lagoon
Ecological Reserve, because the
bridge will provide a connection for a
missing sidewalk segment along the
eastern side of the ECR bridge.
This is a capital improvement project
that would improve pedestrian and
bicycle infrastructure.
Yes
Yes
Open Space,
Conservation,
and
Recreation
Goal 4-G.15
Maintain functional wildlife
corridors and habitat linkage in
order to contribute to regional
biodiversity and the viability of
rare, unique or sensitive
biological resources
throughout the city.
The repairs to the ECR bridge ensure
its ability to function, so that it can
continue to allow the flow of water
and wildlife through the creek
habitat.
Yes
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Public Safety Goal 6-G.3
Maintain safety services that
are responsive to citizens’ need
to ensure a safe and secure
environment for people and
property in the community.
Policy 6-P.1
Enforce the Cobey-Alquist
Floodplain Management Act
and the city’s Floodplain
Management Regulations to
prohibit construction of
structures in a designated
floodway where such
development would endanger
life or significantly restrict the
carrying capacity of the
designated floodway; and to
regulate development within
other areas of special flood
hazard, flood related erosion
hazard and mudslide hazard to
ensure such development does
not adversely affect public
health and safety due to water
and erosion hazards, or result
in damaging increases in
erosion, flood height or
velocities.
The proposed bridge repairs and
improvements would bring the
bridge into conformance with all
Federal Highway Administration
(FHWA) safety requirements.
The project consists of the repair and
improvement of an existing bridge.
The repairs, improvement and new
pedestrian bridge, will not affect the
site’s ability to handle a 100-year
base flood or flood caused by dam
inundation.
Yes
Yes
B. Open Space Zone (CMC Chapter 21.33), RHMP Residential Mobile Home Park Zone (CMC
Chapter 21.37), Planned Community Zone (Chapter 21.38)
The proposed project is required to comply with all applicable use and development standards of the
Carlsbad Municipal Code (CMC) including the Open Space (OS) Zone (CMC Chapter 21.33), and RMHP
Residential Mobile Home Park (RMHP) Zone (CMC Chapter 21.37). The project’s compliance with each of
these zones is discussed below:
Open Space Zone
The proposed ECR bridge repairs and improvements are located in the Open Space (OS) zone. One of the
intents and purposes of the zone is to provide opportunities for open space and recreational uses. Per
CMC Section 21.33.020, trails, bicycle paths and transportation rights-of-way are permitted uses in the OS
zone. The bridge repairs and improvements of the existing ECR bridge and new pedestrian bridge are
consistent with the intent and purpose of the zone in which it is located.
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RHMP Residential Mobile Home Park Zone
This project includes a portion of a parcel within the RMHP Residential Zone. The proposed project is
consistent with typical improvements for a mobile home park and thus consistent with the RHMP zone.
C. Coastal Development Permit (CMC Chapter 21.80) for the Mello II Segment of the Local Coastal
Program (CMC Chapter 21.201) and the Coastal Resource Protection Overlay Zone (CMC Chapter
21.203)
The project site is located within the Coastal Zone and is subject to the Mello II Segment of the Local
Coastal Program (LCP) and is within the appeals jurisdiction of the California Coastal Commission. The site
is also located within and subject to the Coastal Resource Protection Overlay Zone. The project’s
compliance with each of these programs and ordinances is discussed below:
1. Mello II Segment of the Certified Local Coastal Program and all applicable policies.
The project consists of repairs to an existing bridge and a new pedestrian bridge, located predominately
within the public right-of-way, and within public utility and access easements. The project will not obstruct
views of the coastline as seen from public lands or the public right-of-way, nor damage the visual beauty
of the coastal zone as the existing bridge and new bridge will have a relatively low flat profile.
The repairs and improvements will not obstruct views of the coastline as seen from public lands or the
public right-of-way, nor otherwise damage the visual beauty of the coastal zone. Furthermore, no
agricultural uses exist on the site, nor are there any sensitive resources located on the previously
developed site. The proposed project is not located in an area of known geologic instability. Although,
the project is located within a 100-year flood area and dam inundation area, both the existing bridge and
new pedestrian bridge have been designed to withstand these events and will not obstruct water flows
or cause the water to rise upstream or downstream. Given that the site does not have any frontage along
the coastline, no public opportunities for coastal shoreline access or water-oriented recreational activities
are available. Furthermore, the site is not suited for water-oriented recreation activities.
2. Coastal Resource Protection Overlay Zone
The project is consistent with the provisions of the Coastal Resource Protection Overlay Zone (CMC
Chapter 21.203 of the Zoning Ordinance) in that the project will adhere to the city’s Master Drainage Plan,
Grading Ordinance, Storm Water Ordinance, BMP Design Manual and Jurisdictional Runoff Management
Program (JRMP) to avoid increased urban run-off, pollutants and soil erosion. The subject property is
within the public right-of-way and public utility and access easements, does not include steep slopes
(equal to or greater than 25 percent gradient) nor native vegetation. The site is not located within an area
prone to landslides, or susceptible to accelerated erosion, or liquefaction. Although the area is subject to
flooding, the project has been designed to adequately withstand a flood event.
D. Floodplain Management Regulations (CMC Chapter 21.110)
The project site is identified as being within “Zone AE” and “Zone AE with Floodway” of the Flood
Insurance Rate Map 06073C0764G, dated May 15, 2012. “Zone AE” and “AE with Floodway” are special
flood hazard areas (SFHA). These are areas that will be inundated by a flood event having a 1-percent
chance of being equaled or exceeded in any given year. The 1-percent annual chance flood is also referred
to as the base flood or 100-year flood. A Special Use Permit (SUP) is required prior to construction within
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any special flood hazard areas. The permit is required to review the project for protection of public health,
safety and welfare and to minimize public and private losses due to flooding. A SUP may be approved only
if the following findings are made:
1. The project is consistent with the general plan, local coastal program, the requirements of Chapter
21.110 of the Carlsbad Municipal Code, and any other applicable requirements of this code.
The ECR bridge repairs and improvements and the addition of a pedestrian bridge is consistent with the
General Plan in that it provides safety and supports multiple modes of transportation. The project is
compatible with the character and the scale of the surrounding area and will not negatively impact public
views. The ECR bridge and pedestrian bridge are uses that are compatible with periodic flooding.
Additionally, the proposed ECR repairs and pedestrian bridge are consistent with the purpose of the
zoning district in which it is located.
2. The site is reasonably safe from flooding.
The project is located within the 100-year floodplain within which there is a one percent probability of a
flood occurring in any given year. It is also located within a dam inundation area. Emergency action plans
are in place in the event of dam inundation and the dam facilities are periodically inspected by the State
of California Division of Dam Safety. The ECR bridge repairs and improvements, including the new
pedestrian bridge would not impede the carrying capacity of the Agua Hedionda Creek. The bridge would
be built to withstand a 100-year flood event and flood inundation event. The pedestrian bridge will be
anchored by new concrete abutments and supported by deep micropile foundations.
3. The project is designed to minimize the flood hazard to the habitable portions of the proposed
structure.
The project would provide repairs and improvements of the existing ECR bridge and construction of a new
pedestrian bridge. The project would provide a design that would minimize a flood hazard event to the
adjacent resident neighborhood. The project would not include habitable structures.
4. The proposed project does not create a hazard for adjacent or upstream properties or structures.
The project is for repairs and improvements to an existing bridge. The bridge is designed to allow water
from Agua Hedionda Creek to continue flowing. In addition, the project will add a new bridge structure
approximately 26-feet upstream of the existing bridge to provide a missing sidewalk segment for
pedestrians. It would not create new hazards for adjacent or upstream properties or structures.
5. The proposed project does not create any additional hazard or cause adverse impacts to
downstream properties or structures.
The proposed project does not reduce the ability of the site to pass or handle a base flood of 100-year
frequency in that the proposed project repairs to the existing ECR bridge and pedestrian bridge, is
adequately anchored, does not obstruct the waterway and will not create any hazards to adjacent or
downstream properties and structures.
6. The proposed project does not reduce the ability of the site to pass or handle a base flood of 100-
year frequency.
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The Hydraulic Analysis demonstrated the proposed project does not reduce the ability of the existing
bridge or new pedestrian bridge to pass or handle a base flood of 100-year frequency. The deck of the
new bridge would be 18” higher than the top of the existing ECR bridge deck to achieve positive freeboard
clearance from flows within Agua Hedionda Creek during a 100-year flood event.
7. The cumulative effect of the proposed project when combined with all the other existing, proposed,
and anticipated development will not increase the water surface elevation of the base flood more
than one foot at any point.
There are several existing bridge crossings along the Agua Hedionda Creek, including the Cannon Road
Bridge, El Camino Real Bridge, a small foot bridge, and triple box culverts under Rancho Carlsbad Drive.
The Hydraulic analysis stated that the existing condition results and FEMA’s floodplain mapping show that
the 100-year flow does not overtop the existing El Camino Real bridge, so the proposed El Camino Real
bridge improvements will not impact water surface elevations. The water surface elevations from the El
Camino Real bridge are slightly reduced by the project because of the reduced vegetation density.
Therefore, the project adheres to floodplain and floodway regulations.
8. The project is contingent upon compliance with other federal and state regulations required.
A Jurisdictional Delineation Report was completed for this project. The report determined that this project
would be in compliance with United States Army Corps of Engineers (Corps), the California Department
of Fish and Wildlife (CDFW), and the Regional Water Quality Control Board (RQWCB).
E. Scenic Preservation Overlay Zone regulations (CMC Chapter 21.40 and the El Camino Real
Corridor Development Standards)
Proposed development projects along El Camino Real and within 500 feet of the roadway are subject to
the Scenic Preservation Overlay Zone, the El Camino Real Corridor Development Standards, and require a
Special Use Permit (SUP).
The intent of the corridor standards is to maintain and enhance the appearance of the El Camino Real
roadway through design concepts and development standards, and other requirements. In addition, the
standards intend to emphasize and retain the natural topography adjacent to El Camino Real. Minimal cut
or fill will be allowed for development so that it does not detract from the existing identified
characteristics. Grading will not be allowed to create more “visible” development along the roadway.
The proposal is in Area 3 of the El Camino Real Corridor, a southerly section that extends from near the
Country Store to College Boulevard. The corridor description notes low intensity residential uses,
expansive views of the Aqua Hedionda flood plain, hills, valleys, and agricultural areas.
The project is consistent with the development standards and intent of those standards concerning
aesthetics as the table below demonstrates.
CDP 2018-0031, SUP 2018-0005, SUP 2018-0006 (PUB 2018-0014) – El Camino Real at Canon Road
Bridge Improvements
August 19, 2020
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TABLE C - EL CAMINO REAL CORRIDOR COMPLIANCE FOR AREA 3
Standard Compliance
Design Theme Rural Residential The existing ECR bridge after
the improvements and repairs
would continue to look
substantially the same. The
new pedestrian bridge would
be a steel truss style bridge
and would be consistent with
the rural residential design
theme of this area of the
corridor.
Sidewalks None adjacent to street. They may
be provided in individual
developments on the interior side
of the minimum setback.
The improvements will be
made to the existing sidewalk
along the west side of the
bridge. The improvements will
add about 2 feet to the
existing 4-foot width of the
sidewalk. A pedestrian bridge
will be added to provide
pedestrian connectivity along
the east side of the ECR
bridge.
Signs Wall signs only; wood externally
lighted. College Avenue
commercial site allowed a
freestanding monument sign not
to exceed 6 feet high, 12 feet long,
or 50 square feet in area.
The project does not include
wall signs.
Building Height Areas upslope, downslope (less
than 15 feet) and at grade in
relation to El Camino Real
The project does not include
construction of a building
Grading No cut or fill exceeding 10 feet
from original grade.
The improvements are
primarily to the existing
bridge with minimal grading
for the new bridge
abutments, approximately
200 cubic yards are shown on
the plans.
Setback Non-Residential, at grade 60 feet
from right-of-way
This is a capital improvement
project for public facilities and
will occur predominately
within the public right-of-way
Street Light Spacing Double Distance between poles
from City Standard
The project will comply with
city standards
When practical application of the El Camino Real Corridor Standards is not feasible, deviations to the
standards may be approved by the Planning Commission if specific findings are made. This project requires
CDP 2018-0031, SUP 2018-0005, SUP 2018-0006 (PUB 2018-0014) – El Camino Real at Canon Road
Bridge Improvements
August 19, 2020
Page 13
a deviation from the prescribed plant palette by the El Camino Real Corridor Standards which includes
eucalyptus and pine trees. These types of trees are too large to fit within the boundaries of the public
right of way available for this project. Alternatively, Crepe Myrtle trees were selected because they have
a smaller overall growth pattern and thus were considered more compatible with the site characteristics
and are also consistent with the city Community Forest Management Plan. As discussed below, these
findings require a determination of infeasibility, maintenance of scenic qualities, consistency with the
Scenic Preservation Overlay Zone intent, and no adverse impact on traffic safety.
1. That compliance with a particular standard (i.e., landscape) is infeasible for a particular project.
Compliance with the required tree plant palette prescribed by the El Camino Real Scenic Corridor is not
feasible along the eastern side El Camino Real due to the narrow right-of-way, existing utilities lines and
the creek habitat. The right of way is bounded by the sidewalk, bridge abutments, a sound wall and
existing utilities. The eucalyptus and pine species prescribed by the ECR Scenic Corridor were anticipated
to get too big for the space available. The root systems of these trees had the potential of undermining
the bridge abutments, sidewalk and sound wall foundations. Parks and Recreation staff conducted a site
visit to evaluate the conditions of the project site. As a result of the site visit, Parks and Recreation
recommended crepe myrtle trees from the Community Forest Management Plan. The property beyond
the right-of-way is owned and maintained by the Rancho Carlsbad Owner’s Association. The Association
selected Jacaranda and a Camphor trees from the Community Forest Management plan to replace the
trees that were removed on their property. The overall quantity of trees that would be replaced is less
than the quantity of trees that would be removed because the hydraulic analysis noted that the reduced
quantity of trees would allow water to flow without obstruction during a 100-year flood event. More
specifically, twenty-five trees will be removed and fourteen trees will be replanted within the project
boundary. Of those trees that would be removed, four of them are city owned and maintained trees.
Those city trees will be replaced with four crepe myrtle trees within the project boundary and eight
Brisbane box trees outside the project boundary along the El Camino Real corridor which will exceed the
requirement to replace city removed trees at a ratio of 2:1 to comply with the Community Forest
Management Plan. The tree selection was reviewed by the city’s Environmental Management Division,
project biologist and the Hydrology Engineer and the selected trees were found to be suitable for the
project area.
2. That the scenic qualities of the corridor will continue to be maintained if the standard is not fulfilled.
The trees selected provide shade and produce seasonal flowers, providing a visual interest all year long
and contributing to the scenic qualities of the corridor. The trees within the corridor plan would have also
provided shade but were less compatible with the site characteristics.
3. That the project will not have an adverse impact on traffic safety. The design guidelines of the El
Camino Real Corridor Development Standards indicate that “intersections and access points shall be
minimized along the corridor.
The existing roadways would continue to be in conformance with the city’s Engineering Department
Design Standards.” The repairs and improvements to the existing ECR bridge would not change the
existing vehicle lanes. The new pedestrian bridge is approximately 26 feet upstream from the ECR bridge
and would not alter the existing roadway. The new pedestrian bridge would create a new pedestrian
connection along a discontinuous sidewalk section along the east side of the bridge. Because this new
bridge will direct pedestrians away from the roadway it will likely increase traffic safety. The crepe myrtle
CDP 2018-0031, SUP 2018-0005, SUP 2018-0006 (PUB 2018-0014) – El Camino Real at Canon Road
Bridge Improvements
August 19, 2020
Page 14
trees have a relatively small growth pattern. They would be planted in the public right of way outside of
vehicular sight lines and would not obstruct visibility along the roadway.
4. That the project is designed so as to meet the intent of the scenic preservation overlay zone.
Finally, since the project maintains the scenic quality objectives of the corridor standards, it also is
consistent with the intent of the Scenic Preservation Overlay Zone (Zoning Ordinance Chapter 21.40). The
Overlay Zone supplements the underlying zoning by providing additional regulations and guidelines
(which the El Camino Real Corridor Development Standards provide) to guide development in designated
areas, such as scenic corridors, and implement General Plan goals and objectives. Consistent with the
General Plan, the project fulfills Land Use and Community Design Element goals, including Land Use Goal
3-G.3 (“Provide inviting streetscapes that encourage walking and promote livable streets”) and Goal 3-G.2
(“Improve connectivity for residents, visitors and businesses”).
F. Growth Management (CMC Chapter 21.90)
The proposed project is located within Local Facilities Management Zone 8, 14, 15, 24 in the Northwest
and Northeast Quadrant of the city. The project is in compliance with the adopted performance standards
and would provide the necessary public facilities.
IV. ENVIRONMENTAL REVIEW
The City Planner has determined that the project belongs to a class of projects that the State Secretary
for Resources has found do not have a significant impact on the environment; therefore, the project is
categorically exempt from the requirement for the preparation of an environmental document pursuant
to Section 15301 (c)– Exiting Facilities and Section 15301 (d) – Replacement or Reconstruction Class 1 of
the California Environmental Quality Act (CEQA) Guidelines. A Notice of Exemption will be filed by the City
Planner upon project approval. In making this determination, the City Planner has found that the
exceptions listed in Section 15300.2 of the state CEQA Guidelines do not apply to this project. A Notice of
Exemption will be filed by the City Planner upon final project approval.
ATTACHMENTS:
1. Planning Commission Resolution No. 7378
2. Location Map
3. Project Photo Simulation
4. Disclosure Statement
5. Reduced Exhibits
6. Exhibits “A” – “MM” dated August 19, 2020
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El Camino Real at Cannon Road Bridge Improvements
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550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-0006PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.0SCALE IN FEET3060SCALE: 1" = 30'
550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-0006PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.0SCALE IN FEET2040SCALE: 1" = 20'
550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-0006PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.0SCALE IN FEET2040SCALE: 1" = 20'
550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-0006PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.0SCALE IN FEET1020SCALE: 1" = 10'͟͟ϱ͘͟͟ϲ͘͟ϳ͘͟
550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-0006PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.0SCALE IN FEET1020SCALE: 1" = 10'
550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-0006PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.0SCALE IN FEET2040SCALE: 1" = 20'“”
TRAFFICTRANSPORTATION DEPARTMENTCDP2018-0031/SUP2018-0005/SUP2018-0006TURN RIGHTRIGHT LANEMUSTNOT USED WITH THIS PROJECT4-10-202022
TRAFFICTRANSPORTATION DEPARTMENTCDP2018-0031/SUP2018-0005/SUP2018-0006EXISTING PHASE DIAGRAMLEGENDDETECTOR ASSIGNMENTNOT USED WITH THIS PROJECT4-10-202022
TRAFFICTRANSPORTATION DEPARTMENTCDP2018-0031/SUP2018-0005/SUP2018-0006TURN RIGHTRIGHT LANEMUST4-10-202022
TRAFFICTRANSPORTATION DEPARTMENTCDP2018-0031/SUP2018-0005/SUP2018-0006TURN RIGHTRIGHT LANEMUST4-10-202022
PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-00064-9-2022022
PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-00064-9-2022022
PLAN REPRODUCTION WARNINGTHE PLANS HAVE BEEN CREATED ON ARCH D (24"x36") SHEETS. FORREDUCTIONS, REFER TO GRAPHIC SCALE.550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-1039CDP2018-0031/SUP2018-0005/SUP2018-00064-9-202022
Engineering, Inc.E-MAIL: engineer@treisd.comTREI PROJECT # 17332.S00Consulting Engineers4719 PALM AVENUELA MESA, CA 91941-5221619 / 466 / 6224 fax 466 / 6233T U R P I N & R A T T A N H.Lozano 04/09/20 - 1:09pmDrawing Name: C:\Users\H.Lozano\appdata\local\temp\AcPublish_9592\17332.S00_E31 ELECTRICAL SINGLE LINE DIAGRAM, LEGEND AND GENERAL NOTES.dwg Plotted by: H.Lozano | Plot Date: 04/09/20 | Plot Time: 1:09pmCDP2018-0031/SUP2018-0005/SUP2018-0006 No.11533exp.6/30/20ELECTRICALST ATE OF CALIFORNIA
REGISTERED PROFESSIONAL E NG INEER
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.ELECTRICAL SITE PLANELECTRICAL LEGENDSYMBOLDESCRIPTIONDESCRIPTIONABBREV.ABBREVIATIONSELECTRICAL LEGENDSYMBOLDESCRIPTIONBRANCH CIRCUIT DESIGNATIONS:GENERAL NOTESGENERAL NOTESELECTRICAL SITE PLAN KEYNOTESGRADE MOUNTED PULLBOX DETAIL PULLBOX DETAIL KEYNOTES4-9-206/30/2022
Engineering, Inc.E-MAIL: engineer@treisd.comTREI PROJECT # 17332.S00Consulting Engineers4719 PALM AVENUELA MESA, CA 91941-5221619 / 466 / 6224 fax 466 / 6233T U R P I N & R A T T A N H.Lozano 04/09/20 - 1:09pmDrawing Name: J:\17\17332.S00 - El Camino Real Pedestrian Bridge\17332.00\Acadproj\17332.S00_E32 LIGHTING PLANS AND DETAILS.dwg Plotted by: H.Lozano | Plot Date: 04/09/20 | Plot Time: 1:09pmCDP2018-0031/SUP2018-0005/SUP2018-0006 No.11533exp.6/30/20ELECTRICALST ATE OF CALIFORNIA
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.LIGHTING PLAN AT BRIDGEBRIDGE SECTION WITH LIGHTINGLIGHTING ELEVATION AT BRIDGE4-9-2066/30/2022
Engineering, Inc.E-MAIL: engineer@treisd.comTREI PROJECT # 17332.S00Consulting Engineers4719 PALM AVENUELA MESA, CA 91941-5221619 / 466 / 6224 fax 466 / 6233T U R P I N & R A T T A N H.Lozano 04/09/20 - 1:09pmDrawing Name: J:\17\17332.S00 - El Camino Real Pedestrian Bridge\17332.00\Acadproj\17332.S00_E33 LIGHTING PHOTOMETRIC STUDY AND FIXTURE SCHEDULE.dwg Plotted by: H.Lozano | Plot Date: 04/09/20 | Plot Time: 1:09pmCDP2018-0031/SUP2018-0005/SUP2018-0006 No.11533exp.6/30/20ELECTRICALST ATE OF CALIFORNIA
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.LIGHTING PHOTOMETRIC STUDYLIGHTING FIXTURE SCHEDULEFIXTURETYPEMANUFACTURER ANDCATALOG NUMBEREQUIVALENT MANUFACTURERSUBJECT TO APPROVAL OF SHOP DRAWINGSCOLORTEMP.INPUTVOLTSTOTALINPUTWATTS DRIVERTYPETYPE WATTSLAMPSFIXTUREMOUNTING DESCRIPTIONFIXTURE NOTES4-9-2066/30/2022
Engineering, Inc.E-MAIL: engineer@treisd.comTREI PROJECT # 17332.S00Consulting Engineers4719 PALM AVENUELA MESA, CA 91941-5221619 / 466 / 6224 fax 466 / 6233T U R P I N & R A T T A N H.Lozano 04/09/20 - 1:09pmDrawing Name: J:\17\17332.S00 - El Camino Real Pedestrian Bridge\17332.00\Acadproj\17332.S00_E34 OUTDOOR TITLE 24 DOCUMENTATION.dwg Plotted by: H.Lozano | Plot Date: 04/09/20 | Plot Time: 1:09pmCDP2018-0031/SUP2018-0005/SUP2018-0006 No.11533exp.6/30/20ELECTRICALST ATE OF CALIFORNIA
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.4-9-206/30/2022
EL CAMINO REALCANNON ROAD25'25'EL CAMINO REALCANNON ROAD IRRIGATION DEMOLITION PLANRANCHO CARLSBAD OWNER TODISCONNECT/CAP EX. SPRINKLER(S)AND LINE AT CREEK SIDE OF CHAINLINK FENCE.EX. MANUAL IRRIGATION IN OPEN AREA INSIDERANCHO CARLSBAD:OWNER TO CUT AND CAP APPROXIMATELYTHREE (3) EX. FULL CIRCLE IMPACTSPRINKLERS ADJACENT TO AND ON NORTHSIDE OF EX. WALL AT EL CAMINO REAL, ANDCUT AND CAP EX. LINE(S) FOR LATERRECONNECTION AND SYSTEM RESTORATIONBY RANCHO CARLSBAD.EX. MANUAL OVERHEAD IRRIGATION INBETWEEN WALL AND EL CAMINO REAL. REMOVEALL IRRIGATION EQUIPMENT WITH DEMOLITION.CUT AND CAP LINE(S) FROM VALVEOUTSIDE, AND EAST OFCONSTRUCTION AREA. ADJUST EX.IRRIGATION COVERAGE AS REQUIRED.EX. RECYCLED WATER IRRIGATIONSYSTEM (ROBERTSON RANCH EAST H.O.A.)ADJUST EX. 12" POP-UP SPRAY HEADS ATEDGE OF NEW SIDEWALK (APPROX. 6'-8"FROM EX. FACE OF CURB)35REMOVE POP-UP HEADS WITHIN LIMIT OFWORK AND CUT AND CAP LINE(S) OUTSIDEAND WEST OF CONSTRUCTION AREA.ADJUST EX. IRRIGATION COVERAGE ASREQUIRED TO MAINTAIN EVEN COVERAGEOF REMAINING LANDSCAPE AREA.CHAIN LINK FENCESEE CIVIL PLAN550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-10393916 Normal StreetSan Diego, CA 92103619.294.4477www.ktua.com30201050SCALE: 1"= 10'39EL CAMINO REAL BRIDGEIMPROVEMENTS AT CANNON ROADIMPROVEMENT PLAN FOR:CDP2018-0031/SUP2018-0005/SUP2018-0006LIMITS OF WORKNOTE:SEE GREENBOOK SPECIFICATIONS ANDPROJECT SPECIAL PROVISIONS FORADDITIONAL INFORMATIONALL EXISTING PLANTING AND/ORIRRIGATION DESIGNATED TO REMAIN ONSITE SHALL BE PROTECTED IN PLACE. ANYEXISTING PLANTING ORIRRIGATION DAMAGED DURING THECOURSE OF THE PROJECT SHALL BEREPLACED IN KIND TO THE SATISFACTIONOF THE CITY AND PER LANDSCAPE MANUALREQUIREMENTS
EL CAMINO REALCANNON ROAD
EL CAMINO REALCANNON ROAD IRRIGATION PLAN36VERIFY EXISTING IRRIGATION CONTROLVALVE AND SYSTEM IS OPERATIONAL.TEMPORARILY REMOVE END HEAD(S) ANDFLUSH OUT END OF LINE PRIOR TO ANYWORK.VERIFY EXACT LOCATION OF, ANDCONNECT TO EXISTING LATERAL LINE ANDEXTEND TO NEW IRRIGATION HEADS.ADJUST NEW HEADS TO PROVIDE WATERTO NEW TREES WITHOUT OVERSPRAYONTO SIDEWALK, UTILITIES, D.G., ETC.CHAIN LINK FENCEPER CIVIL PLAN550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-10393916 Normal StreetSan Diego, CA 92103619.294.4477www.ktua.com30201050SCALE: 1"= 10'39EL CAMINO REAL BRIDGEIMPROVEMENTS AT CANNON ROADIMPROVEMENT PLAN FOR:CDP2018-0031/SUP2018-0005/SUP2018-0006LIMITS OF WORKVERIFY EXACT LOCATION OF EXISTING LATERALLINE. CONNECT TO EXISTING LATERAL LINE ANDEXTEND TO NEW IRRIGATION HEADS. ADJUST NEWHEADS TO PROVIDE WATER TO NEW TREESWITHOUT OVERSPRAY ONTO SIDEWALK OR DG.PROPOSED TREES PERPLANTING PLAN SHEET 38IRRIGATION SCHEDULESYMBOLMANUFACTURER/MODELARC PSI GPM RADIUS6" POP-UP TREE SPRAY HEAD PER DETAIL ARAIN BIRD 1806-SAM-PRS WITH 1800NP COVER& SQ-Q NOZZLEQTR. 30 0.124'x4'6" POP-UP TREE SPRAY HEAD PER DETAIL A1806-SAM-PRS WITH 1800 NP COVER & U8-QNOZZLE90 30 0.26 8'IRRIGATION LATERAL LINE: 34" PVC SCHEDULE40PIPE SLEEVE: 2" PVC SCHEDULE 40; EXTEND12" BEYOND EDGE OF PAVEMENT AND D.G.SURFACESEXISTING MAINLINE (APPROXIMATE LOCATION.CONTRACTOR TO VERIFY)6" POP-UP TREE SPRAY HEADASECTIONSCALE: N.T.S.LEGENDINSTALL 2" ABOVE FINISH GRADE IN SHRUBAREAS / FLUSH WITH FINISH GRADE INTURF AREASFINISH GRADEPOP-UP BODY WITH SPRAY NOZZLE. REFERTO LEGEND18" MIN. SOIL COVERSWING JOINT ASSEMBLY, (3) PVC SCH 40STREET ELLS WITH (1) 6" THREADED PVCSCH 80 NIPPLELINE SIZE PVC SCH 40 SLIP X SLIP X 12" FIPTTEE OR LINE SIZE SLIP X 12" FIPT ELL ATTERMINAL ENDS34" PVC NON-PRESSURE LATERAL LINE.123456724" FROM EDGEOF HARDSCAPE235671NOTES:1. REFER TO PLANS FOR SPECIFICDIMENSIONS AND IRRIGATION NOTES FORSPRINKLER PLACEMENT.2. USE TEFLON TAPE ON ALL THREADEDCONNECTIONS.4EXISTING MAINLINECAPPED AT LIMITOF LANDSCAPEDEMOLITION PERSHEET 35VERIFY EXISTING IRRIGATION CONTROL VALVE ANDSYSTEM IS OPERATIONAL. TEMPORARILY REMOVEEND HEAD(S) AND FLUSH OUT END OF LINE PRIORTO ANY WORK.INSTALL HEAD 36"FROM TREE TRUNKNOTES:1. SEE GREENBOOK SPECIFICATIONS ANDPROJECT SPECIAL PROVISIONS FORADDITIONAL INFORMATION.2. ONLY SUBSURFACE IRRIGATION SHALL BEUSED TO IRRIGATE ANY VEGETATION WITHINTWENTY-FOUR INCHES OF AN IMPERMEABLESURFACE UNLESS THE ADJACENTIMPERMEABLE SURFACES ARE DESIGNEDAND CONSTRUCTED TO CAUSE WATER TODRAIN ENTIRELY INTO A LANDSCAPED AREA.ALL EXISTING PLANTING AND/ORIRRIGATION DESIGNATED TO REMAIN ONSITE SHALL BE PROTECTED IN PLACE. ANYEXISTING PLANTING ORIRRIGATION DAMAGED DURING THECOURSE OF THE PROJECT SHALL BEREPLACED IN KIND TO THE SATISFACTIONOF THE CITY AND PER LANDSCAPE MANUALREQUIREMENTS
EL CAMINO REALCANNON ROAD25'25'TREE REMOVAL PLANREMOVE EX. TREESSEE CHART FOR TYPE AND SIZEEX. TREE TO REMOVE (TYP.)REFER TO CHART FOR TYPEAND SIZEEX. OAK TREE TOREMAIN; PROTECT INPLACEEX. TREE TO REMAIN;PROTECT IN PLACEREMOVE ALL WEEDS SUCH AS CASTORBEAN (RICINUS COMMUNIS) FROMCREEK AREA WITHIN LIMIT OF WORK.PROTECT ALL NATIVE VEGETATION.37CHAIN LINK FENCEPER CIVIL PLAN550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-10393916 Normal StreetSan Diego, CA 92103619.294.4477www.ktua.com30201050SCALE: 1"= 10'39EL CAMINO REAL BRIDGEIMPROVEMENTS AT CANNON ROADIMPROVEMENT PLAN FOR:CDP2018-0031/SUP2018-0005/SUP2018-00061234657101189121314151816171921202223#LIMITS OF WORK2524EX. TREE TO REMAIN;PROTECT IN PLACENOTES:1. SEE GREENBOOK SPECIFICATIONS AND PROJECTSPECIAL PROVISIONS FOR ADDITIONALINFORMATION.2. REFER TO CIVIL PLANS FOR EROSION CONTROLHYDROSEED INFORMATION.3. ANY TREES LOCATED WITHIN A VEHICULAR SIGHTLINE MUST HAVE ALL LIMBS REMOVED TO A HEIGHTOF 6 FEET ABOVE THE ADJACENT TOP OF CURB.LEGENDEXISTING TREES LEGEND
EL CAMINO REALCANNON ROAD25'25'LANDSCAPE MATERIAL AND PLANTING PLANCOBBLE (DETAIL C, SHEET 39)STABILIZED DECOMPOSED GRANITE (DETAIL D, SHEET 39)RECOMPACT SOIL 12 INCHES FROM FINISHED SIDEWALK EDGE2"-3" SIZE COBBLESTABILIZEDDECOMPOSEDGRANITECONCRETESIDEWALK PERCIVIL PLANSRECOMPACT IMPACTEDEDGE, MIN. 12" FROMFINISHED SIDEWALK2"-3" SIZE COBBLESTABILIZEDDECOMPOSEDGRANITEEX. TREE TO REMAIN;PROTECT IN PLACEEX. TREE TO REMAIN;PROTECT IN PLACELEGEND6" CONCRETE CURBUNDER RAILING(RAILING PER BARRIERREPLACEMENT PLAN)6" CONCRETE CURBUNDER RAILING (RAILINGPER BARRIERREPLACEMENT PLAN)6" CONCRETE CURBUNDER RAILING(RAILING PER BARRIERREPLACEMENT PLAN)6" CONCRETE CURBUNDER RAILING (RAILINGPER BARRIERREPLACEMENT PLAN)6" CONCRETEMOW CURB6" CONCRETEMOW CURB6" CONCRETEMOW CURB6" CONCRETEMOW CURBSTABILIZEDDECOMPOSEDGRANITE6" CONCRETE MOW CURB (DETAIL E, SHEET 39)38CHAIN LINK FENCEPER CIVIL PLAN550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-10393916 Normal StreetSan Diego, CA 92103619.294.4477www.ktua.com30201050SCALE: 1"= 10'39EL CAMINO REAL BRIDGEIMPROVEMENTS AT CANNON ROADIMPROVEMENT PLAN FOR:CDP2018-0031/SUP2018-0005/SUP2018-00066" CONCRETEMOW CURBLIMITS OF WORKLANDSCAPE MULCH 3" DEEPLANDSCAPE MULCHCIN CAM24" BOX2JAC MIM24" BOX3EX. TREE TO REMAIN;PROTECT IN PLACEPLANT SCHEDULETREES CODE BOTANICAL NAME COMMON NAME SIZE MATURE SIZE QTY REMARKSCIN CAM CINNAMOMUMCAMPHORACAMPHOR TREE 24" BOX 40-60' T x50-70' W2 TREE SHALL HAVE A STRONG LEADER,SYMMETRICAL CANOPY, AND GOOD COLOR.STAKE PER DETAIL A, DRAIN PIPE PER DETAILB, SHEET 39.JAC MIM JACARANDAMIMOSIFOLIAJACARANDA 24" BOX25-40' T x15-30' w3TREE SHALL HAVE A STRONG LEADER,SYMMETRICAL CANOPY, AND GOOD COLOR.STAKE PER DETAIL A, SHEET 39.LAG TUS LAGERSTROEMIA x'TUSCARORA'CORAL PINKCREPE MYRTLE24" BOX 15-20' T x15-20' W9 SELECT FOR PINK FLOWER COLOR. STAKEPER DETAIL A, SHEET 39.LAG TUS24" BOX9NOTES:1. SEE GREENBOOK SPECIFICATIONSAND PROJECT SPECIAL PROVISIONSFOR ADDITIONAL INFORMATION.2. REFER TO SHEET 39 FORMATERIALS SCHEDULE.PROTECT IN PLACE EXISTINGLANDSCAPE TO THE EXTENTPRACTICABLE. REPLACE IN KIND ANYLANDSCAPE DISTURBED BY PROJECTCONSTRUCTION.ALL EXISTING PLANTING AND/ORIRRIGATION DESIGNATED TO REMAIN ONSITE SHALL BE PROTECTED IN PLACE. ANYEXISTING PLANTING ORIRRIGATION DAMAGED DURING THECOURSE OF THE PROJECT SHALL BEREPLACED IN KIND TO THE SATISFACTIONOF THE CITY AND PER LANDSCAPE MANUALREQUIREMENTSSIGHT TRIANGLEEXISTINGSTREET LIGHT(TYP.)xTREES SHALL BE PLANTED TO MEET THE 2:1 RATIO PRESCRIBED BY THE CITY OF CARLSBAD COMMUNITY FOREST MANAGEMENT PLAN.COORDINATION WITH CITY OF CARLSBAD PARKS AND RECREATION FOR ADDITIONAL 8 - 24" BOX BRISBANE TREES TO BE PLANTEDALONG THE EL CAMINO REAL CORRIDOR TO SATISFY THE PLAN REQUIREMENTS.xANY TREES LOCATED WITHIN A VEHICULAR SIGHT LINE MUST HAVE ALL LIMBS REMOVED TO A HEIGHT OF 6 FEET ABOVE THEADJACENT TOP OF CURBHYDROSEEDAREA PER CIVILSHEET 7HYDROSEEDAREA PER CIVILSHEET 7HYDROSEED PER CIVIL PLANS, SHEET 7
MATERIALS SCHEDULESYMBOLDETAILREFERENCEDESCRIPTION SIZE, OR COLOR/FINISHREMARKS SUPPLIER (ALL MAY BEAPPROVED EQUAL)N/AREMOVE EXISTINGTREESN/AGRIND STUMP TO 36" BELOWGRADE, MIN. AND REMOVE ALLROOTS LARGER THAN 3" INDIAMETER. RECOMPACT SOIL ANDPREPARE PER CIVIL PLANSN/ACCOBBLE2"-3" SIZE MEXICANBEACH PEBBLE,BUFF(TYPE 10 MULCH)SOUTHWEST BOULDERAND STONEDSTABILIZEDDECOMPOSEDGRANITE (D.G.)CALIFORNIA GOLDFINESSOUTHWEST BOULDERAND STONEAFOREST MULCH TYPE 1 GROUNDWOODAGRISERVICELANDSCAPE MATERIAL AND PLANTING DETAILSCOBBLE ON GRADENOT TO SCALESECTIONCLEGENDGRADES VARY, SEE CIVIL PLANSCOBBLE MULCHPERMEABLE WEED BLOCKING FABRICPER SPECIFICATIONSSUBGRADE8" (MIN.) TURN WEED BLOCKINGFABRIC UNDER AT ALL EDGES, (TYP.)SECURE FABRIC WITH STEEL "U"STAKES @ 24" O.C. AT EDGESPLANTING AREA, WHERE OCCURS123456NOTE:COBBLE MULCH TO COVER 100% OVER WEED BLOCKING FABRICAND SHALL NOT BE VISIBLE THROUGHTOUT AREA OFAPPLICATION.512346DECOMPOSED GRANITE SURFACE (D.G.)SCALE: 1"=1'-0"SECTIONDLEGENDADJACENT PAVED SURFACE OR CURB.WHERE D.G. IS ADJACENT TOWALKABLE SURFACE, TOP OF D.G. ISTO BE LEVEL WITH PAVEMENT'S FINISHSURFACE.COMPACTED SUBGRADE TO 6" DEEPSTABILIZED DECOMPOSED GRANITESURFACE2" DEPTHFINISH GRADECONCRETE CURB PER DETAIL D1234566526"413NOTE:STABILIZED DECOMPOSED GRANITE SURFACE SHALL BEMAINTAINED SO THAT A LEVEL, FIRM, STABLE, RESISTANTSURFACE IS PROVIDED. RE-APPLY STABILIZER PERMANUFACTURER'S RECOMMENDATIONS (5-10 YEARS).4"NOTE:INSTALL EXPANSION JOINTSAT 30' O.C. & CAULK6"453211LANDSCAPE AREA PER PLANTINGPLAN26" WIDE CONCRETE MOW CURB3#3 REBAR- CONTINUOUS CENTERIN MOW CURB (LAP 12"@SPLICES)4STABILIZED DG OR COBBLE PER PLANS5SUBSOIL COMPACTED 95% TOMIN. 12" DEPTHSCALE: 2"=1'-0"SECTIONE39550 West C Street Suite 1200 San Diego, CA 92101Tel. (619) 831-4600 Fax. (619) 232-10393916 Normal StreetSan Diego, CA 92103619.294.4477www.ktua.com39EL CAMINO REAL BRIDGEIMPROVEMENTS AT CANNON ROADIMPROVEMENT PLAN FOR:CDP2018-0031/SUP2018-0005/SUP2018-0006#6"NOTE:1. SEE GREENBOOK SPECIFICATIONSAND PROJECT SPECIAL PROVISIONSFOR ADDITIONAL INFORMATION.LEGENDWOOD STAKE (SEE SPECIFICATIONS)TREE TIE (MIN. 4 REQUIRED, NAIL TOSTAKE)MULCH, REFER TO SPECIFICATIONSAND PLANTING NOTES FOR DEPTHAND TYPETREE OBSERVATION TUBE FORCAMPHOR TREES. SEE DETAIL B, THISSHEETFINISH GRADEPLANT TABLETS (3" BELOW GRADE)PLANTING PIT W/ ROUGHENED SIDESBACKFILL MIX (PUDDLE AND SETTLE)2x ROOTBALL DIAMETER MIN.ROOTBALLDEPTH OF ROOTBALL6" WATERING BASIN (EXCEPT IN LAWN)TREE COLLARTREE TRUNKCUT ALL STAKES 6" BELOW TREECANOPY123456789101112131415NOTES:A. REFER TO SPECIFICATIONS FOR PLANTING PROCEDURES ANDADDITIONAL INFORMATION.B. REMOVE FROM BOX WITH AS LITTLE DISTURBANCE TO THEROOTBALL AS POSSIBLE.TREE PLANTING WITHDOUBLE STAKING AND OBSERVATION TUBENOT TO SCALESECTIONA 12"MIN.24"151413121191012345678 H.P.+534126'-0" MIN.6"12"MIN. DIA.2" MAX.68" MIN.4321LEGENDBACKFILL MIXGRAVEL FILL AROUND PIPE3" PERFORATED PIPE WITH FILTERSOCK (LENGTH AS REQUIRED)PLASTIC ATRIUM DRAIN GRATEFINISH GRADEUNDISTURBED ROOTBALL123456NOTES:A. EXTEND PERFORATED PIPE BELOWBOTTOM OF ROOTBALL. SLANT BOTTOMOF PLANTER PIT TO ALLOWACCUMULATED WATER TO COLLECT ATBASE OF PERFORATED PIPE. SIPHON OFFAS REQUIRED TO PREVENT ROOT ROT.B. DO NOT FILL PERFORATED PIPE WITHGRAVEL.TREE OBSERVATION TUBENOT TO SCALEPLAN & SECTIONBPLANSECTION6
From:Diane Nygaard
To:Planning
Subject:El Camino Real Bridge Widening # 3 August 19,2020 PC Hearing
Date:Monday, August 17, 2020 9:04:36 AM
Honorable Chair and Commissioners
We appreciate that this design has been done in a way that minimizes many of the impacts to
the biological resources at this sensitive location that helps connect core habitat at Calavera toAgua Hedionda lagoon. We appreciate that consideration of bats and monarchs have
specifically been addressed in the project conditions. While the vegetation on the eastern sideis very degraded, this area is part of the local wildlife movement corridor. There have been
multiple missed opportunities over the years to improve the function of this corridor. A fewmodifications to this project design could make a significant difference in the long
term success of this linkage.
Please make sure the final design addresses the following :
- Sound wall reconstruction and fencing needs to this allow for wildlife movement and avoidentrapment
There are several small existing openings that allow escape from the creek area that has
parallel rows of fencing that can cause entrapment. Similar opportunities for escape need tobe included in final design. In addition to avian and small terrestrial species, larger
mammals like mule deer, coyote and bobcat are now using this corridor.
- Conduct wildlife movement surveys and protect corridor throughout construction
Pre construction, during and post construction surveys should be used to document existingconditions and ensure no adverse impacts to wildlife movement. Construction staging areas
and fencing are particularly important to consider so that somep pathways under the bridgeremain open.
- Consider native trees instead of ornamentals
The use of natives is an easy way to support improved biological function. While we
agree the jacaranda is a lovely tree, the amount of material deposited in the creek couldimpede flow. Our native California oaks are one of the best trees for carbon sequestration..
This area along a pedestrian walkway would be a great place for interpretive signage toeducate the public about the value of trees to help mitigate climate change.
- Tree species and placement needs to be considered
It does not appear that tree placement will provide any shade for pedestrian walkways. It is
not clear from the drawings If this could be improved by placement, or tree species( or maybeelevation differences make this moot). But if project objectives can be met while improving
the pedestrian experience that would be preferred. It is not just the number of trees, butplacing them where they help reduce the heat island effect and support increased use of
alternative transportation also needs to be considered.
-Hydroseed/understory plantings
It is great that the hydroseed mix includes native plantain that hosts Quino Checkerspot. Butthat is not likely to be enough to support them in a riparian corridor. Also great that Monarch
monitoring is included. Please consider adding narrow leaf milkweed to the plant mix and thisarea could become part of establishing an improved pollinator pathway.
- Lighting
We see discussion of construction lighting, but unclear what, if any, permanent lighting
will be included. Please clarify what lighting will be provided along the bridge and how thiswill be shaded to prevent spillover to the creek and wildlife corridor. Night lighting is of
particular concern because many of our local wildlife are nocturnal. Solar lighting would begood to consider.
- Address other wildlife crossing issues in the project vicinity
There is an existing box culvert under Cannon and a smaller one under El Camino Real on the
other side of the intersection. Both of these are outside of the project boundaries. Both needregular maintenance to remove excess vegetation and maintain hydrologic flow This is
complicated by multiple owners on each end of the culverts. This is an on-going chronic issuethat needs further attention.
- Update the El Camino Real Scenic Corridor guidelines
As discussed in the staff report this project is not consistent with the guidelines. They really
need to be looked at- particularly in light of more recent information about fire spread andhow the two species protected in the plan contribute to that- eucalyptus and pine.
- Consider potential impact of 200 yr flood event
Our local creeks are already responding to climate change and several experienced 200 yr
flood events last year.
Thank you for considering our comments.
Diane NygaardOn behalf of Preserve Calavera
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