HomeMy WebLinkAbout3184; CANNON ROAD WEST; CONCEPTUAL WETLAND MITIGATION PLAN FOR TEMPORARY WETLAND IMPACTS; 2000-07-01Conceptual Wetland Mitigation Plan
fOr Temporary Wetland Impacts
of the Cannon Road Extension Project
Carlsbad, California
Prepared for
City of Carlsbad
2075 Las Palmas Drive
Carlsbad, California
u
JUL 2 ? 2J)
DEPATMiV
July 2000
UUULFI ENVIRONMENTAL AND ENERGY SERVICES
U....
I
S I,
1.1
0
Conceptual Wetland Mitigation Plan
II for Temporary Wetland Impacts
of the Cannon Road Extension Project.
Carlsbad, California . . .
Prepared for
City of Carlsbad
2015 Las Palmas Drive
Carlsbad, California
Prepared by
Ogden Environmental and Energy Services Co., Inc.
5510 Morehouse Drive
San Diego, California 92121
(858) 4589044
July 2000
Project No. 3197.21000
TABLE OF CONTENTS
SECTION TITLE PAGE
1.0 INTRODUCTION I
1.1 Project Description I
1.1.1 Project Location 1
1.1.2 Project Summary 4
1.1.3 Responsible Parties 4
1.1.4 Jurisdictional Areas to be Temporarily Impacted by
Habitat Type 5,
1.1.5 Type(s), Functions, and Values of the Jurisdictional
Areas to be Directly and Indirectly Impacted 5
2.0 MITIGATION GOALS S .. 6
2.1 Type of Habitat to be Restored 6
2.2 Functions and Values of Habitat to be Restored 7
2.3 Time Lapse 7
2.4 Estimated Cost . 7
3.0 FINAL SUCCESS CRITERIA 7
3.1 Success Standards 8
3.2 Target Functions and Values - 8
3.3 Target Hydrological Regime 8
3.4 Target Jurisdictional Acreage to be Restored 11
4.0 PROPOSED MITIGATION SITE 11
4.1 Location and Size of the Mitigation Area 11
4.2 Ownership Status 11
4.3 Existing Functions and Values of the Mitigation Area 11
4.4 , Present and Proposed Uses of the Mitigation Area . 13
4.5 Present and Proposed Uses of All Adjacent Areas 13
4.6 Zoning 13
319721000 S
TABLE OF CONTENTS (Continued)
SECTION TITLE PAGE
5.0 IMPLEMENTATION PLAN 13
5.1 Rationale for Expecting Implementation Success 14
5.2 Responsible Parties 14
5.2.1 City of Carlsbad 14
5.2.2 Restoration Biologist 14
5.2.3 Installation Contractor 15
5.3 Contractor Education 16
5.3.1 Schedule 16
5.4 Site Preparation 16
5.4.1 Wetland Protection 16
5.4.2 Site Grading 17
5.4.3 Soil Testing 18
5.5 Planting Plan 18
5.53 Mitigation Area 18
5.5.2 Installation Specifications 22
5.6 Irrigation Plan 25
5.7 As-Built Conditions 25
6.0 MAINTENANCE PLAN 26
6.1 Responsible Parties 26
6.1.1 City of Carlsbad 26
6.1.2 Restoration Biologist 26
6.1.3 Landscape Maintenance Contractor 26
6.2 Schedule 27
6.3 Maintenance Activities 27
6.3.1 Contractor Education 27
6.3.2 Contractor Guarantees 27
6.3.3 Irrigation System Maintenance 27
6.3.4 Pest Management 28
6.3.5 Dead Plant Replacement
.
29
6.3.6 Soil Fertility Management 29
6.3.7 Erosion Control 29
319721000 ii
TABLE OF CONTENTS (Continued)
SECTION TITLE
6.3.8 Trash Removal
6.3.9 Access Control
7.0 MONITORING PLAN
7.1 Performance Criteria
7.2 Monitoring Methods
7.2.1 Horticultural Monitoring
7.2.2 Botanical Monitoring.
7.3 Annual Reports
7.4 Schedule
8.0 COMPLETION OF THE MITIGATION
8.1 Notification of Completion
8.2 Agency Confirmation
9.0 CONTINGENCY MEASURES
9.1 Initiating Procedures
9.2 Alternative Locations for Contingency Measures
9.3 Funding Mechanism
9.4 Responsible Parties
10.0 REFERENCES
LIST OF FIGURES
NUMBER TITLE
1 Project Location Map
2 Project Location Cannon Road West
3 CannonRoad Temporary Impact Mitigation Site
4 Schematic Planting Plan for the Cannon Road Wetland
Mitigation Area
PAGE
30
30
30
30
30
31
31
32
33
33
33
33
34
34
34
34
34
35
PAGE
2
3
12
19
319721000 iii
TABLE OF CONTENTS (Continued)
LIST OF TABLES
NUMBER TITLE PAGE
1 Success Standards and Recommended Remedial Measures for
the Cannon Road Extension Project Temporary Mitigation Area 9
2 Cannon Road Extension Project Temporary Mitigation Area
Container Plant List 20
3 Cannon Road Extension Project Temporary Mitigation Area
Hydroseed Mix .21
LIST OF APPENDICES
LETTER TITLE PAGE
A Sample Data Sheet A-i.
3)972 1000 Iv I
LO INTRODUCTION
This wetland mitigation plan provides direction for implementing a successful program to
compensate for temporary wetland impacts associated with the construction of Cannon
Road Extension Project. The project site and mitigation area is located in the City of
Carlsbad in San Diego County, California. This mitigation plan is required by the U.S.
Army Corps of Engineers (USACE) Permit Number 92-194 EW; U.S. Fish and Wildlife
Service (USFWS) Biological Opinion 1-6-92-F-34 (April 7, 1992); California
Department of Fish and Game (CDFG) Streambed Alteration Agreement Notification
No. 5-273-89; and California Coastal Commission (CCC) Permit No. 6-89-195.
JurisdictiQnal wetlands that were temporarily impacted by the proposed project include
0.68 acres of southern willow scrub and freshwater marsh in Macario Canyon. In
addition to the area temporarily impacted, this plan also covers revegetation of 1.9 acres
of southern willow scrub and freshwater marsh directly impacted by the Macario Canyon
Bridge construction and through shading. These direct and shading impacts were
mitigated by creation of wetlands farther up Macario Canyon. Macario Creek flows
through Macario Canyon into Agua Hedionda Lagoon. Temporary impacts to native
wetland habitat due to bridge construction over Macario Canyon will be mitigated at a
1:1 ratio. This ratio is a guideline set by USACE. Wetland mitigation will occur in the
construction area where the preexisting wetland once existed.
1.1 PROJECT DESCRIPTION
1.1.1 Project Location
The Cannon Road Extension Project is located south of Agua Hedionda Lagoon between
Interstate 5 and El Camino Real (Figures 1 and 2). From its interchange with Interstate 5,
the existing Cannon Road runs east about 1,000 feet, ending at Car Country Drive.
Reach 1 begins here and extends east across Macario Canyon, eventually connecting with
Reach 2 and El Camino Real. The temporary wetland impacts occurred under and
around the Macario Canyon Bridge construction.
319721000 1
\
L ) CAMP
Go
I PENDLETON
FAU.BROOK
WARNER SPRINGS
Lake 79 Henshaw
76
VISTA
Lake
'Woh!fo,d CARLSBAD MARCOS Lake
PROJECT Sutherland
LOCATION
ESCONDIDO
_____ SANTA YSABEL
Lake
Hodges 78
N INITAS 78 JULIA
6 RANCHO RAMONA BERNARDO
15
San Vicente
4 P0 WAY Reser,'oir
aa
El Capitan
- Reservoir
52 52
M-
67
SANTEE ALPINE
8 ______ EL C JON Loveland Reservoir
63
'
I GO Parrott Lake
weetwater
Reservoir JAMUL
CH A VISTA 94
DULZURA
- rotay Lake
INTERNA1
I
SAN YSIDRO
- -
_____
IMPERIAL BEAcH
TIJUANA
OGDEN Project Location Map
FIGURE
Biology/Cannon Road-Permits/Cannon Rd County Map.FH7
\
wat
-- ;
0
4\
7
Ke I •' - 'if ?,/'L" t
Pit
34 47~
7PJJ
-. . - .... .
°'-
\ ç cu
yReach a--
/Ix, nEa P4nt' '
- \ - -
a - SrvOlr
,av
- -
I r
Suba anflon - ,_ / Macario Canyon 3 I wi-. -.
--. -Mitigation Area . .i - PIOC,
. ..'-. Reach1.
\ C.... \ .. \ • - .—' \ Farr
Me 1 ank '
..-' '•\ f
,1
OGDEN
FEET
FIGURE
Project Location r Cannon Road West I
L_ - - Biology/Cannon Road. Permits/Cannon Road West.FH8
1.1.2 Project Summary
The Cannon Road Extension Project consists of constructing a four-lane arterial roadS
from Car Country Drive to El Camino Real. The entire length of the Cannon Road
Extension Project is within the City of Carlsbad. The project is broken into two parts:
Reach 1 and Reach 2.
Reach 1 of Cannon Road will extend from Car Country Drive onto the mesa above Agua
Hedionda Lagoon and traverse Macario Canyon 'near its confluence with the lagoon
basin. Reach I will cross Macario Canyon on a bridge and terminate on the eastern
canyon rim. Reach 1 was the subject of an environmental impact report (EIR) certified
on June 27, 1989.
Reach 2 of Cannon Road begins on the eastern edge of Macario Canyon and travels
northeasterly to the intersection with El Camino Real. The project area is bounded by
El Camino Real to the north, College Avenue to the east, and Palomar Airport Road to
the south (Figure 2). Reach 2 of Cannon Road was originally analyzed under the
development proposal of the Kelly Ranch EIR.
This plan will mitigate temporary wetland impacts that occurred during construction of
the bridge over Macario Canyon in Reach 1.
1.1.3 Responsible Parties
Applicant: City of Carlsbad
Address: 1635 Faraday Avenue
Carlsbad, California 92008
Contact: Ms. Sherri Howard, Associate Engineer
Preparer: Ogden Environmental and Energy Services Co., Inc. (Ogden)
Address: 5510 Morehouse Drive
San Diego, California 92121
319721000 4
1.1.4 Jurisdictional Areas to be Temporarily Impacted by Habitat Type
A total of 2.58 acres of southern willow scrub/freshwater marsh was impacted by the
construction of the Macario Canyon Bridge for the Cannon. Road Extension Project.
Permanent impacts were mitigated prior to their impacts under the Conceptual Wetlands
Mitigation Plan for Reaches 1 and 2 of the Cannon Road Extension Project (TetraTeèh
1997) and the Addendum to Conceptual Mitigation Plan for Cannon .Road Extension
Project Reaches 1 and 2 (TetraTech 1998). All mitigation areas described in the two
conceptual mitigation plans are planted. Temporary wetland impacts (0.68 acres) will be
mitigated under this mitigation plan. Approximately 1.9 acres of southern willow
scrub/freshwater marsh impacted by the construction of the bridge and through shading
will also be revegetated under this plan.
1.1.5 Type(s), Functions, and Values of the Jurisdictional Areas to be Directly and
Indirectly Impacted
Type
The primary plant community identified within the temporary impact area was southern
willow scrub. Common native species include arroyo willow (Salix lasiolepis), black
willow (Sal ix goodingii), and mule fat (Baccharis salicfolia). This habitat is primarily
found in loose, sandy, or fine gravely alluvium deposited near stream channels. In
addition, some freshwater marsh also occurred along the main channel in Macario
Canyon.
Functions and Values
The primary function of the waters in the area is the transport of surface and groundwater
flows from the watershed to Agua Hedionda Lagoon. Functions and values of the
southern willow scrub include contributions to local water quality and wildlife habitat.
A detailed qualitative assessment of functions and values was presented in the wetland
mitigation plan for the Cannon Road Extension Project (Tetra Tech 1997). A summary
of this assessment is provided below.
Wetland and riparian habitats provide nutrient removal and transformation functions.
While the relatively small extent of the affected habitats may limit the quantity of
II 319721000 5
n,utrients removed or transformed, they are expected to contribute to enhance water 11
quality and nutrient resources both within the stream system and in Agua Hedionda
Lagoon.
The affected southern willow scrub modifies flood flows by increasing the roughness
coefficient. This reduces flow velocity and may result in the spreading of high
floodwaters and increase of surface area where recharge can take place. The value of the
affected habitat for moderation of stream transport sedimentation to Agua Hedionda
Lagoon is rated as low to moderate due to the small size of the affected area. The
binding action of the roots of southern willow scrub vegetation is expected to enhance
sediment stabilization. The relatively small amount of sediment that is deposited within
the stream and its adjacent floodplain is of high value in the context of the riparian
community. Also southern willow scrub habitat shades water that flows through it and
may moderate or reduce water temperatures.
The affected waters and wetlands also provide habitat functions and values for wildlife.
Potentially affected wildlife includes two species listed as endangered. by the USFWS:
least Bell's vireo (Vireo belli pusillus) and southwest willow flycatcher (Empidonax
traillii extimus). Least Bell's vireo have been documented as nesting in Macario Canyon
for the past several years.
The affected water and wetlands provide limited recreational opportunities. Bird
watching and jogging activities probably occur as well as off-road activities. No hunting,
fishing, or other consumptive uses are known to occur in the area.
2.0 MITIGATION GOALS
2.1 TYPE OF HABITAT TO BE RESTORED
Temporary impacts caused by construction of the bridge over Macario Canyon will be
m restored to southern willow scrub habitat. A total of 2.58 acres of wetland habitat will be
restored. The habitat will be dominated by willows and include mule fa (Baccharis.,
I. salicfolia) and blue elderberry (Sambucus mexicana) in the overstory. The understory
species will include arrow weed (Pluchea sericea), California rose (Rosa calfornica),
. California blackberry (Rubus ursinus), mugwort (Artemisia douglasiana), Palmer
sagewort (Artemisia palmeri), western ragweed (Ambrosia psilostachya), yerba mansa
I
319721000 . 6
(Anemopsis calfornica), Mexican rush (Juncus mexicanus), and evening primrose
(Oenothera villosa ssp. strigosa). The site did support some freshwater marsh and the
mitigation area is considered a wet site, with areas that have standing water almost
year-round. Cattails (Typha sp.) and bulrush (Scirpus calfornica) could potentially
invade wetter areas and convert the wetland to freshwater marsh.
2.2 FUNCTIONS AND VALUES OF HABITAT TO BE RESTORED
The proposed mitigation will consist of restoring 2.58 acres of southern willow
scrub/freshwater marsh that existed prior to construction. Thus, the goal for the
mitigation is to also restore the same functions and values of the preexisting wetland.
As the mitigation site becomes established, the functions and values of the wetland will
progress toward preexisting conditions and have similar functions and values of the
wetlands adjacent to the mitigation area. Water quality is expected to increase with the
increase . in wetland vegetation cover. The increase in wetland vegetation will trap
sediment and toxins, disseminate flood flow, and increase soil stability and nutrient
transformation. Habitat functions and values will progress to their preexisting state as the
plants grow and species and structural diversity increase. Social functions and values are
expected to remain low.
2.3 TIME LAPSE
The mitigation area goals of establishing the desired species should be met within the
5-year maintenance and monitoring time frame required for. the project. It will take
20 years or more for the tree species to reach full maturity, height, and habitat value.
2.4 ESTIMATED COST
A cost estimate for the wetland mitigation program has not been calculated for this
portion of the project. The cost estimate will be provided when it becomes available.
3.0 FINAL SUCCESS CRITERIA
This section outlines the success criteria that will be used to determine the wetland
mitigation area's success.
148
319721000 7
3.1 SUCCESS STANDARDS
This section provides a set of yearly performance standards for evaluating project
progress for the wetland mitigation area. These standards will be used to decide when to
implement remedial measures to correct deficiencies in project progress. The standards
are based on previous project experience and agency permits and agreements.
Table 1 provides success standards and recommended remedial measures for the
2.58-acre wetland mitigation area. The recommended remedial measures are intended to
be flexible enough to allow the restoration biologist to respond to a variety of conditions
with multiple possible solutions.
U 3.2 TARGET FUNCTIONS AND VALUES
The target functions and values for the mitigation area are to restore functions and values
similar to those that preexisted on the site. To assess the mitigation area, the adjacent
wetland's functions and values will be used as the standards for the restored wetland site.
To measure the progress of the wetland mitigation area toward the target functions and
values, standards for percent native plant cover, plant species diversity, average tree
heights, and percent plant survivorship have been set for the project. Recommended
remedial measures are also stated to correct any areas where the success standards have
not been met.
I
3.3 TARGET HYDROLOGICAL REGIME
The watershed supporting the wetland mitigation area originates, from the upper reaches
I
of Macario Canyon. This water that will support the mitigation area will come from
storm water runoff and groundwater, as well as nuisance runoff from the developed
portion of the canyon.
The target hydrological regime will be similar to the preexisting wetlands and the
I adjacent wetlands., The majority of the hydrological functions are generated, from
unnamed streams watershed rather than the proposed mitigation area. The source of
water will remain seasonal runoff and groundwater discharge. Seasonal flooding will
319721000 8
Table 1
SUCCESS STANDARDS AND RECOMMENDED REMEDIAL
MEASURES FOR THE CANNON ROAD EXTENSION PROJECT
TEMPORARY MITIGATION AREA
Remedial Measure if
Standard S Standards Not Met
Year I
50% ground cover (visual estimates) Reseed/replant,
substitutions possible
Establishment of all species planted or seeded Reseed/replant,
substitutions possible
90% healthy container plants',Replace with same species/size
80% healthy cuttings
Year 2
All trees of acceptable growth rate in height Mulch and/or fertilizer may be
recommended by the restoration
biologist.
90% survival of tree container plants' Replant with same species/size
80% survival of shrub container plants'
80% survival of cuttings
70% total ground cover for all species Additional seed or container
combined (visual estimates)3 plants as recommended by
restoration biologist
319721000 9
Table 1 (Continued)
SUCCESS STANDARDS AND RECOMMENDED REMEDIAL
MEASURES FOR THE CANNON ROAD EXTENSION PROJECT
TEMPORARY MITIGATION AREA
Remedial Measure if
Standard Standards Not Met
Years 3-5
Height standards met for all, trees
Tree Height Standards2
black willow (1 gal.)
arroyo willow (1 gal.)
narrow-leaved willow (1 gal.)
blue elderberry (1 gal.)
90% survival of tree container plants'
80% survival of shrub container plants'
80% survival of cuttings
Replant or receive remedial
measures, substitutions possible
YR3 YR4 YRS
8 10 12
8 10 .12
4. 6 8
4 5 6
Replant with same species/size
75% cover by all species in year 33 Additional seed or container
80% cover by all species in year 43 plants as recommended by
90% cover by all species in year 53 restoration biologist
Irrigation will gradually be withdrawn from the mitigation area during years 3 and 4. No
further irrigation will be applied after year 4. For the project to be considered successful,
plants must survive one full dry season without supplemental irrigation.
At the discretion of the restoration biologist, dead container plants can be mitigated for by
naturally invading seedlings, if such seedlings are within 5 feet of the original plants and of
similar species or habitat value.
2 All heights given in feet
Cover of freshwater marsh species is acceptable in place of southern willow scrub species
319721000 10
occur at similar rates and periodicity. The flow direction will remain substantially the
same and the size of the watershed is not expected to change significantly. Water quality
T. and sediment transport functions are also expected to be similar to the preexisting
wetland and adjacent wetland.
3.4 TARGET JURISDICTIONAL ACREAGE TO BE RESTORED
The goal of this wetland mitigation plan is to create 2.58 acres of jurisdictional wetland
habitat. This will be done by restoring the construction area to preexisting grade and
planting native wetland species. The goal is to restore the same quality of southern
S willow scrub/freshwater marsh habitat that existed prior to construction.
4.0 PROPOSED MITIGATION SITE
4.1 LOCATION AND SIZE OF THE MITIGATION AREA
The mitigation site is located immediately below the proposed bridge that spans Macario
Canyon (Figure 3). All wetland areas that were temporarily impacted by the construction
of the bridge will be restored.
4.2 OWNERSHIP STATUS
The City of Carlsbad currently owns the proposed mitigation site and lands adjacent to it.
The mitigation area will remain in ownership of the City of Carlsbad following
IN completion of the project. Long-term protection and management of the site will remain
the responsibility of the City of Carlsbad. Permission to access the site may be obtained
from the City of Carlsbad.
4.3 ExisTiNG FUNCTIONS AND VALUES OF THE MITIGATION AREA
The existing functions and values of the mitigation area are low. The site was cleared of
all vegetation and graded for construction of the Macario Canyon Bridge. The water
from the stream was diverted around the construction. The site will be graded to
preexisting conditions and wetland vegetation will be planted to mitigate the temporary
impacts caused by the bridge construction. False work pilings driven into the soil will be
cut off 2 feet below wetland grade and left in place.
319721000 ii
a a a a a a
3
gig
MA
1 ma -
L- 7
1
IN
4Y -
IN
- -- 1 CANNON ROAD
MY-
- $',
WN
I I
4
,.
EXISTING RIPARIAN..
IN
- ..
Mitigation Site ... NOT TO SCALE
. .-:- :.-' -.-. . -S . S
4.4 PRESENT AND PROPOSED USES OF THE MITIGATION AREA
The proposed wetland mitigation area is currently used for construction of the Macario
Canyon Bridge for Cannon Road. This area will be graded to conditions that existed
prior to construction and reestablished as wetland habitat.
4.5 PRESENT AND PROPOSED USES OF ALL ADJACENT AREAS
The City of Carlsbad owns all adjacent areas. The existing uses of the adjacent properties
include agricultural production on the slopes southeast of the mitigation site. The slopes
southwest of the site are currently used as habitat and watershed. Several dirt roads
maintained by San Diego Gas & Electric (SDG&E) and used for maintenance of
electrical towers and gas lines traverse the area, and off-road vehicle use occurs on these
roads. SDG&E has existing right-of-ways for a gas transmission pipeline and electrical
transmission lines on adjacent lands. The road that currently crosses the canyon will no
longer be required for SDG&E when Cannon Road opens to traffic. This access road will
be regraded to remove excess soil and fenced to allow habitat to return.
The proposed uses for areas adjacent to the mitigation site include a park and a golf
course on the slopes currently used for agriculture. Cannon Road will cross Macario
Canyon above and adjacent to the site.
4.6 ZONING
Lands on and adjacent to the mitigation area are zoned as open space.
5.0 IMPLEMENTATION PLAN
This section addresses wetland mitigation design and installation for the temporary
wetland impacts. Mitigation for temporary wetland impacts will involve restoring
2.58 acres of southern willow scrub and freshwater marsh. The restoration is designed to
be self-sustaining and wetland habitats will persist over the long-term once specified
maintenance and monitoring goals have been met.
319721000 13
5.1 RATIONALE FOR EXPECTING IMPLEMENTATION SUCCESS
This mitigation plan should be successful because the necessary design steps have been
taken to ensure a successful project. Site conditions are ideal since there were previous
wetlands onsite. Mitigation will consist of reestablishing the native vegetation that
previously occupied the site. Ogden has considerable experience designing and
monitoring wetland mitigation projects and carrying them through to successful
conclusion. By restoring the proper conditions, the wetland mitigation area will become
wetland again.
5.2 RESPONSIBLE PARTIES
Applicant City of Carlsbad
Address: 1635 Faraday Avenue
Carlsbad, California 92008
Preparer Ogden Environmental and Energy Services Co., Inc. (Ogden)
Address: 5510 Morehouse Drive
San Diego, California 92121
5.2.1 City of Carlsbad
The City of Carlsbad is implementing the Cannon Road Extension project.
Ms. Sherri Howard, the associate engineer, is the contact person for the City of Carlsbad
at (760) 602-2756. The City of Carlsbad will be responsible for hiring a restoration
biologist to oversee the project and an installation contractor.
5.2.2 Restoration Biologist
An experienced restoration biologist (see qualifications below) or licensed landscape
architect with knowledge of restoration biology will work with a California registered
landscape architect to develop final landscape construction documents for the proposed
mitigation area. The landscape architect will be responsible for the preparation of
planting plans based on this conceptual mitigation plan. The restoration biologist will
319721000 14
review and approve all final landscape construction documents. The landscape architect
will also be responsible for the preparation of an installation cost estimate for the project
that will be used for bonding and bidding purposes:
A restoration biologist will supervise all grading, landscape installation, and landscape
maintenance work. The restoration biologist shall monitor the contract growing of all
plant materials and approve plant layouts, as well as monitor container plant and seed
acceptability. A qualified restoration biologist will also oversee the 5-year maintenance
period including horticultural and botanical monitoring requirements (see Sections 6 and
7). This restoration biologist will submit his/her qualifications to the resource agencies
and be approved to monitor the. project. The restoration biologist shall have the
following minimum qualifications:
1. A Bachelor's degree in biology, ecology, botany, horticulture, or a landscape
architecture license;
- 2. Knowledge of the vegetation associations proposed for the restoration effort
including species identification, composition, overstory, understory, and
species ecological positions;
A minimum of 2 years of practical horticultural experience or equivalent
p study, including plant installation, fertilization, weeding, pruning, irrigation,
and pest control; and
Training and/or local experience in growing the native plant species used in
the project, either in a nursery or in the field.
ON
5.2.3 Installation Contractor
The installation contractor will be responsible for the installation and establishment of the
ON' mitigation area up to 120 days after installation. The installation contractor must have a
C-27 California Landscape Contractor's license and be experienced in installing native
habitat mitigation projects in southern California. At the end of the 120-day
establishment period, the restoration biologist will certify that all required installation and
maintenance tasks were completed including, but not limited to, dead plant replacement,
proper staking, and pest control. A maintenance contractor. will take over the mitigation
319721000 15.
area once the respective 120-day maintenance period is certified complete by the
restoration biologist.
5.3 CONTRACTOR EDUCATION
All contractors that complete some aspect of the mitigation plan will meet at the site with
the project's restoration biologist before beginning any work in the area. The restoration
biologist, will review all requirements of the plan and associated wetland permits
pertaining to the mitigation site that concern the contractors including site protection,
inspections, landscape procedures, and guarantees. The restoration biologist will have
final supervisory control over field installation.
5.3.1 Schedule
P
The time schedule for the mitigation site installation will be provided as part of the Final
Mitigation Plan or submitted tà the agencies prior to' installation. The optimal time for
installation of the plants is from September 15 through the end of December. However,
with irrigation, the area may be planted during the fall, winter, or spring.
5.4 SITE PREPARATION
To restore the mitigation area, the site will need to be returned to the grade that existed
prior to construction. The grading will be completed by the bridge contractor. The
wetland mitigation area will be graded using standard earthmoving equipment. The
restoration biologist shall be onsite during final grading to ensure that the appropriate
grade matches the existing wetland and prior wetland grades. Optimally, site preparation
should begin in mid-September or as soon as the least Bell's vireo has migrated out of the
area. False work pilings will be cut off 2 feet below grade and left in place
5.4.1 Wetland Protection
Existing riparian and other desirable native vegetation in the construction area have been
previously fenced to avoid impact during construction of the bridge. Temporary
construction fencing was constructed of orange nylon 'temporary utility barrier fencing.
Fencing that was adjacent to wetlands received silting fencing at the base of the orange
net fencing This is to prevent sediment from construction activities from washing into
31972 1000 • 16
the existing wetland. The restoration biologist will assess this fencing to ensure that it is
in good working order prior to grading activities.
The restoration biologist will certify in writing to USACE that the limits of the work
areas have been adequately fenced before grading begins. If at any time workers or
machinery damage vegetation outside the limits of work, the contractor will bear the full
cost of having the restoration biologist complete a restoration plan for the additional area,
as well as the casts for monitoring the success of the supplemental restoration. USACE
Will requires that any additional impacts to existing wetland vegetation be mitigated at a
3:1 ratio with new habitat creation.
The contractor will be responsible for repairing any damage to protective fencing within
I week of such damage. At the end of grading activities, upon approval by the
restoration biologist, the fencing may be removed if other project-related activities will
not harm existing riparian vegetation. After environmental fencing is removed, the
restoration biologist will monitor any further activities that require use of vehicles or
machinery in the mitigation area.
Access to the mitigation areas shall be on existing dirt roads used for construction of the
bridge and shall not be widened. The construction contractor will be expected to stay
within the confines of these access routes to perform construction activities.
5.4.2 Site Grading
Grading work will remain within the limits of work set by the protective fencing. Any
excavated soil that is not needed will be removed from the wetland mitigation areas and
disposed of in a legally acceptable manner.
The restoration biologist will supervise grading in the mitigation areas to ensure the final
grades match the previous wetland grades. Restoration of the wetland grades to the
preexisting grades should achieve the hydrological conditions necessary to create a self-
sustaining wetland habitat over the long-term. Generally, wetland hydrology occurs in
southern California when the top 18 inches of soil is saturated approximately 30 to
45 days per year during an average rainfall year (Environmental Laboratory 1987), or the
water table is close enough to the surface to support a predominance of hydrophytic
vegetation.
319721000 17
Only construction equipment necessary to accomplish construction tasks will be allowed
in the mitigation area. Workers' vehicles will be parked outside the riparian corridor and
all equipment will be removed from the site as soon as its task is completed. No
vehicular fluids will be added or changed withinthe riparian corridor.
5.4.3 Soil Testing
Once the mitigation area is graded, the landscape installation contractor shall collect one
or more composite soil samples to submit for agricultural suitability testing. The soil
samples shall be taken to a qualified soil-testing laboratory such as AgriService in Vista
or Soil and Plant Lab in Santa Ana. The restoration biologist may modify or specify
additional soil amendments based on these test results.
5.5 PLANTING PLAN
The planting plan for the wetland mitigation area incorporates a combination of container
plants, cuttings, seed, and volunteer invasion to create the basic structure for the desired
wetland habitat. A schematic planting plan for the wetland mitigation area is shown in
Figure 4. The project's landscape architect will design the planting plans based on the
criteria outlined here and will incorporate them into the construction drawings. The
wetland mitigation area will be planted using standard horticultural practices, as outlined
below and specified in the construction drawings.
5.5.1 Mitigation Area
After the mitigation area has been graded and an irrigation system has been installed, the
area shall be planted with the container plants and cuttings listed in Table 2 and then
hydroseeded with the seed mix shown in Table 3. The container plant table defines
species, spacing, composition, and approximate number of plants per acre for all
container plants. For species to be seeded, the number of pounds per acre of seed is
provided. The wetland mitigation area will consist of open to closed canopy of southern
willow scrub, with an understory of riparian scrub species similar to what existed
adjacent to the site. Other native species, especially freshwater marsh species, will likely
volunteer into the site and will contribute to native species diversity. All container
319721000 18
L IL II ii ir
LEGEND
SE Salix exigua
leaved willow
SL Salix lasiolepsis
arroyo willow
SG Salix gooddingil
black willow
SM Sambucus mexicana
blue elderberry
BS Baccharfs salicifolia mule fat
PS Pluchea serfcea
arrow weed
RS Rosa califomica
California rose
RU Rubus ursinus
California blackberry
WC Salix laslolepis
arroyo willow cuttings
BC Baccharfs soficifolia
mule fat cuttings
NFF 10 _ _
SL CRD
narrow
® C . () SG Q 00 SL
0
-@
BS WC C .
®0
SG RC 0 ()
ee C O-1 sm (I) .
WC 0 SL
RU e Wc
S, WC SE (RU
S,
wc (~) , e
BC 8C
SE
RC
@(D
PS ac BC
S SM sm
PS
SL WC SG SG WC
BS
SG C SG SL SIG
0 060 0
FEET
F I G U R E
OGDEN . Schematic Planting Plan for the Cannon Road
Wetland Mitigation Area
U.... .
Biology/Cannon Road - Permits/Cannon Rd Plant Plan.FHO
!wJI.I.ID
Table 2
CANNON ROAD EXTENSION PROJECT TEMPORARY MITIGATION AREA
CONTAINER PLANT: LIST
Scientific Name Common Name Container Percent Spacing Number Total for
Size Composition (o.c.) per Acre Project
(2.58 acres)
Trees
Salix exigua narrow-leaved willow 1 gallon 10 .10 ft. 44 114 Salix lasiolepis arroyo willow 1 gallon 20 10 ft. 87 225 Salix goodingii black willow 1 gallon 20 10 ft. 87 225
Sambucus mexicana blue elderberry 1 gallon 5 10 ft. 22 57
Shrubs
Baccharis salicfolia mule fat 1 gallon 10 8 ft. 68 175
Pluchea sericea arrow weed 1 gallon 5 8 ft. 34 88 Rosa cal!fornica California rose 1 gallon 5 5 ft. 87 227 Rubus ursinus California blackberry 1 gallon 5 5 ft. 87 227
Cuttings
Baccharis salicfolia mule fat cuttings 10 5 ft. 174 449 Salix lasiolepis . arroyo willow cuttings 10 5 ft. 174 449
Total Container Plants: 516 1,338
Total Cuttings: 348 . 898
Tree and Shrub Cover
Artemisia douglaEiana mugwort
Artemisia palmeri Palmer sagewort
Baccharis salicfolia mule fat
Ground Cover
Ambrosia psilostachya western ragweed
Anemopsis caljfornica yerba mansa
Juncus mexicanus Mexican rush
Oenothera villosa ssp. strigosa evening primrose
4 .5
3 8
5 1
2 Not Available
2 27
I Not Available
2 74
q
Table 3
CANNON ROAD EXTENSION PROJECT TEMPORARY MITIGATION AREA
HYDROSEED MIX
Scientific Name Common Name Pounds per Acre Percent Pure Live Seed
Total Pounds Per Acre: 19
Hydroseed Slurry Mix:
Seed mix at 23 pounds per acre
Virgin wood fiber mulch at 2,000 pounds per acre ..
Fertilizer (6-20-20XB) at 725 pounds per acre
Agricultural gypsum at 850 pounds per acre
plants shall be planted from 1-gallon containers. The cuttings will be taken from adjacent
wetlands and provide structure diversity to the woodland.
5.5.2 Installation Specifications
This section covers all activities relating to the installation of the mitigation area,
including irrigation, substitutions, plant inspections, sources, container planting practices,
hydroseeding specifications, guarantees, cutting specifications, postinstallation
maintenance, and monitoring reports. All speôifications shall be followed in
implementing the project and shall be included as part of the construction document
specifications package. Mitigation installation shall be reviewed and approved by the
restoration biologist.
Substitutions
All container plants will be secured prior to planting dates. No substitutions above
10 percent of any species number specified will be allowed. The restoration biologist
will determine if species substitution is biologically acceptable.
Plant Inspection
All plants will be inspected by the restoration biologist and approved as healthy, disease
free, and of proper size prior to planting. In addition, the restoration biologist will
approve the final layout of all plant materials in the field prior to planting to ensure their
correct ecological positioning.
Sources
The source of all propagules and seed used at the mitigation site will be secured from
native sources within San Diego County that are as close to the mitigation site as
possible. The restoration biologist will work closely with the contractor and the suppliers
to approve all sources of plant materials. The contractor will provide the restoration
biologist with information on the sources of all plant and seed materials grown/collected
for the project for final approval. If necessary, the project restoration biologist will help
the grower locate local sources for propagules and seed.
319721000 22
Container Planting Practices
Container plants will be planted using standard horticultural practice, using a hole at least
twice the diameter of the rootball and leaving the plant crown 1-2 inches above grade
after planting. All plants will be thoroughly watered in their pots before planting.
Likewise, the soil in all planting holes will be wetted before planting.
A backfill mix containing only native soil, 2 tablespoons of Osmocote 18-6-12 slow
release fertilizer or equivalent, and 1 pound of agricultural gypsum will be used. In
addition, container plants will receive Agriform 21-gram (20-10-5) slow release fertilizer
tabs at the rate of one for each 1-gallon plant. These tabs will be placed no deeper than
8 inches from the soil surface. The restoration biologist may specify additional soil
amendments based on soil test results.
A 2-foot-diameter layer of mulch will be applied around each container plant. The mulch
layer should be no less than 3 inches deep. After the container plants are installed and
mulched, they will be thoroughly watered.
Staking of trees will only be implemented if considered necessary by the restoration
biologist at the time of planting. No staking is expected on this project. However, if
needed, all staking will be with two 2-inch diameter by 8-foot-long wooden lodgepole
stakes on either side of the plant, with tree ties holding the trunk to the post at the lowest
possible level of 'support. Staking will be removed as soon as trees can support
themselves.
Container Plant Guarantees
All plants determined to be dead or diseased by the restoration biologist will be replaced
at 120 days after installation by the installation contractor and then as required by the
maintenance program. Replacement plants will be planted during fall, winter, and spring
months. Unless substitutions are approved by the restoration biologist, the replacement
plants shall be of the same size and species as originally specified.
319721000
- 23
Hydroseeding Specifications
Hydroseeding will take place after the installation of all container plantings and weed:
eradication is complete. All existing weeds will be removed prior to hydroseeding and
the ground will be thoroughly wetted. Hydroseeding will proceed only after the
restoration biologist certifies that hydroseed site preparation work has been completed.
Hydroseed quality will be the best obtainable in the year of application for both purity
and germination and shall meet the minimum pure live seed standards specified in the
seed lists (Table 3). No seed shall be more than 1 year old when applied. Amount of
seed purchased, germination, and purity of seed will be provided in writing to the
restoration biologist by the landscape contractor for all seed used.
Hydroseed Guarantees
The contractor will guarantee a 70 percent coverage rate of the bydroseeded areas at
120 days or respray all areas where inadequate seed establishment has taken place at the
determination and direction of the restoration biologist.
Cutting Specifications
Cuttings will be taken from willow and mule fat in the adjacent wetlands. Cuttings will
not all be taken from one plant but from many different plants. Each cutting will be
2-feet long and 1/2 to 1 inch in diameter. The. cuttings will be installed in the same
direction as they were obtained from the tree or shrub, with the end closest to the main
trunk inserted into the ground 8 to 10 inches deep. A 2-foot-diameter layer of mulch will
be applied around each cutting. The mulch layer should be no less than ,3 inches deep.
After cuttings are installed and mulched, they shall be thoroughly watered. No cuttings
will be collected during vireo nesting season.
Postinstallation Maintenance
The installation contractor shall maintain all plants and hydroseeded areas for 120 days
after the completion of installation. Two weeks before the end of the 120-day plant
establishment period, the restoration biologist will walk the site and prepare a list of dead
container plants for replacement, reseeding needs, and unfinished maintenance items to
319721000 24
be completed by the landscape contractor. The restoration biologist will walk the site
with the contractor again at the end of the 120-day plant establishment period. The
restoration biologist will certify the project as complete only if all punchlist items are
completed. Any unused replacement container plants will be planted in the mitigation
area as directed by the restoration biologist.
Monitoring Reports
Progress reports will be made to the City of Carlsbad during the installation period. The
first report will indicate the initiation of the installation phase of the project and certiy
that contractor 'education has been completed and all wetland protective fencing is in
good repair prior to grading. The next progress report will document the completion of
the installation, the starting of the 5-year maintenance and monitoring program and the
beginning of the 120-day establishment period. The restoration biologist will also file a
final report' 'certifying the completion of installation at the end of the 120-dày
establishment period, once the contractor has completed all punchlist items at the final
site inspection.
5.6 IRRIGATION PLAN
Irrigation will be supplied for this mitigation site. The source of water for the site has not
been identified. The source of water may come from the adjacent farmland or the
existing mitigation site to the south. It is anticipated that irrigation will' be buried PVC
pipe with overhead sprinklers. Although the use of irrigation will be temporary, it will be
permanently installed to reduce vandalism. Final irrigation design will be conducted by a
landscape architect and reviewed by the restoration biologist.
5.7 As-BUILT CONDITIONS
Within 6 weeks of the restoration biologist, certifying in writing that mitigation
installation is complete, the City of Carlsbad will submit a report to USACE describing
as-built conditions of the wetland mitigation area. Separate reports will be required for
grading and for planting work if these tasks are not completed within 6 weeks of each
other. Topographic maps showing as-built contours will be submitted to USACE, along
with planting plans and any other installations or structures in the wetland mitigation
area.
31972 1000 , , 25
Li
6.0 MAINTENANCE PLAN
The purpose of the 5-year maintenance program is to maintain the site, allowing the I plants to establish and become self-sustaining. Maintenance activities expected to be
necessary during the 5-year maintenance program include contractor education,
I contractor guarantees, pest management, dead plant replacement, soil fertility
management, erosion control, trash removal, and access control.
6.1 RESPONSIBLE PARTIES
6.1.1 City of Carlsbad
The City of Carlsbad is implementing the Cannon Road Extension project.
Ms. Sherri Howard, the contact person for the City of Carlsbad can be reached at
(760) 602-2756. Her position, is Associate Engineer. The City of Carlsbad will be
responsible for hiring a restoration biologist to oversee the project and a landscape
maintenance contractor.
6.1.2 Restoration Biologist
Overall supervision of the landscape maintenance contractor will be the responsibility of
the restoration biologist. The restoration biologist' will be directly under contract with the
City 'of Carlsbad to ensure the proper completion of contract documents and ensure that
proper landscape maintenance procedures are followed. The restoration biologist will
provide contractors with a written checklist of tasks to be performed after each
monitoring visit.
6.1.3 Landscape Maintenance Contractor
After completion of the 120-day plant establishment period, the City of Carlsbad will hire
a landscape maintenance contractor for the remainder of the 5-year maintenance period.
The landscape maintenance contractor will be responsible for the maintenance program
requirements after completion of the landscape installation contract.
319721000 26
6.2 SCHEDULE
The 5-year maintenance period begins when the installation has been certified as
complete by the restoration biologist. Landscape maintenance shall be performed on a
not less than monthly basis throughout the 5-year maintenance program.
The 5-year maintenance period is intended to ensure project success, but regulatory
agencies may release the project from its maintenance program early if it has met all its
success standards. Likewise, the 5-year period may be extended by regulatory agencies if
the project has not met all its 5-year success standards.
6.3 MAINTENANCE ACTIVITIES
6.3.1 Contractor Education
The restoration biologist will meet with the landscape maintenance contractor prior to the
start of work to ensure that the contractor understands the maintenance provisions of the
mitigation plan as well as the recommendations for current maintenance procedures. The
contractor will be given a copy of the mitigation plan to help guide their work.
6.3.2 Contractor Guarantees
The City of Carlsbad will be responsible for the cost of replacing dead or diseased plant
material, unless caused by landscape contractor negligence. The landscape contractor
will be responsible for planting all replacement container plants and seed at the specified
replacement dates defined by the restoration biologist. The restoration biologist may
recommend species substitutions or spot replacement plants in different locations from
the dead plant. The restoration biologist will verify and document dead plant
replacement and seeding.
6.3.3 Irrigation System Maintenance
The landscape maintenance contractor will be responsible for the regular maintenance
and repair of all elements of the irrigation system. The landscape maintenance contractor
will check system operation at least monthly, except during periods when the system is
not in operation due to rain.
319721000 27
The landscape maintenance contractor will provide the restoration biologist with the
irrigation system cycle start times and the length of each cycle for all valves in the
wetland mitigation area. These times will be changed based on seasonal weather
conditions and plant needs as recommended by the restoration biologist. When changes
are made, the landscape maintenance contractor will provide the restoration biologist
with written confirmation of the date and time the changes were made.
6.3.4 Pest Management
The restoration biologist and landscape maintenance contractor will monitor pest species
populations: An Integrated Pest Management (IPM) approach will be taken towards pest
control, with control measures and prevention playing major roles in suppressing or
reducing pest species populations. Active pest control measures will be implemented if a
pest species poses a competitive threat to native species establishment.
Weed Control
Weed control requires constant diligence by the landscape maintenance contractor. The
first 2 years of project establishment is the crucial period for weed control. A
48-inch-wide plant-free band will be maintained around all container plants and cuttings
for the first 2 years after planting. Throughout the rest of the project, the restoration
biologist will specify which weed species are to be controlled. Because of the critical
nature of weed control at the beginning of the project, the landscape maintenance
contractor may be held liable for reseeding if weeds are not controlled in a timely basis,
preventing the establishment of the intended species. Weed control procedures will take
place at leasi monthly. More frequent control measures will be performed as necessary
or as recommended by the restoration biologist to keep weeds at manageable levels. The
landscape maintenance contractor should consult a licensed pest control advisor if
specific pest control recommendations are necessary.
The landscape maintenance contractor will give special attention to the control of
invasive exotic weed species in the wetland mitigation area. These species include, but
are not limited to, giant cane (Arundo donax), tamarisk (Tamarix sp.), pampas grass
(Cortaderia sp.), castor bean (Ricinus communis), tree tobacco (Nicotiana glauca),
cocklebur (Xanthium strumarium), black mustard (Brassica nigra), fennel (Foeniculum
319721000 28
vulgare), and gum tree (Eucalyptus sp.). The restoration biologist may recommend other
species to be controlled.
Insect and Disease Management
Insect plant pests, vertebrate pests, and plant diseases will be monitored. Plants that are
severely diseased will be removed if directed by the restoration biologist. Species
substitutions may be required for plants infected with soil borne pathogens, as the
replacement plant is likely to become infected as well. Keeping the plants in the wetland
mitigation area healthy during the establishment period will be the primary method of
avoiding most serious insect and disease problems. The landscape. maintenance
contractor should consult a licensed pest control advisor if specific pest control
recommendations are necessary.
6.3.5 Dead Plant Replacement
Dead and diseased plants will be flagged in the field by the restoration biologist and a list
will be provided to the landscape maintenance contractor for replacement. Dead and
diseased plants will be replaced. annually during the fall months until the completion of
the 5-year maintenance program. Replacement plants will be installed and mulched. If
plants fail to meet performance milestones at the end of any given year, replacement
plants may be one of the remedial measures recommended by the restoration biologist.
All plants will be replaced in-kind unless otherwise specified by the restoration biologist.
6.3.6 Soil Fertility Management
The restoration biologist shall monitor plant growth, and in consultation with soil test
results, may make recommendations for the application of fertilizer or other soil
amendment. Fertilizer will not be needed once . the plants are well established, meeting
success criteria, and are self-supporting.
6.3.7 Erosion Control
No erosion is expected within the mitigation area. If erosion occurs in the mitigation
area, the restoration biologist will assess the damage and recommended remedial
measures. Erosion of the adjacent slopes will also be monitored by the restoration
319721000 29
biologist. The restoration biologist may recommend silt fencing to prevent sediment
from being washed into the mitigation area.
6.3.8 Trash Removal
The landscape maintenance contractor will remove all trash from the mitigation area at
least monthly throughout the 5-year maintenance period. Care will be taken that trash
removal activities minimize or avoid impacts to plants in the mitigation area. All dead
limbs and tree fall will be left in the mitigation area. Weed debris will be removed from
the mitigation area and disposed of legally offsite.
6.3.9 Access Control
No service vehicles will be allowed in the mitigation area at any time. Maintenance
access to the mitigation area will be limited to the minimum necessary for weed and trash
removal. All vehicles will be parked outside the mitigation area at all times. No power
tool fluids will be changed or.added while they are in the mitigation area.
7.0 MONITORING PLAN
7.1 PERFORMANCE CRITERIA
Success standards are outlined in Section 3. The restoration biologist shall recommend
appropriate remedial measures to improve growth if the wetland mitigation area is not
meeting its stated goals in a timely manner.
While remedial measures are partially defined herein, they are also left to the discretion
of the restoration biologist since it is expected that one approach will not always be the
best or the most cost-effective for the problem at hand. Remedial measures will include
some or all of the following: fertilizer applications, pest control, replanting, additional
means of irrigation, and species substitution.
7.2 MONITORING METHODS .
The wetland mitigation area will be monitored through a combination of horticultural and
botanical means. Horticultural monitoring provides proactive direction and oversight of
319721000 30
the landscape maintenance program, while botanical monitoring measures protect habitat
development.
7.2.1 Horticultural Monitoring
The restoration biologist, having the qualifications outlined in Section 5.2, will direct the
project's horticultural monitoring program. The planting will be inspected by the
restoration biologist as needed during installation and at least monthly during the first
2 years after planting. Thereafter, the restoration' biologist will visit the project a
minimum of 8 times a year. Monitoring visits will be made as often as necessary to
ensure project progress and proper maintenance'.
A written memorandum will be prepared after each postcoiistruction site visit listing any
problems and recommending remedial measures. These memoranda will be sent to the
City of Carlsbad and landscape maintenance contractor 'for implementation. The
restoration biologist will be responsible for all required dead plant counts, the approval of
any substitutions as outlined in Section 6.3, and for recommending all remedial measures
to be implemented. '
7.2.2 Botanical Monitoring
Botanical monitoring includes the quantitative measurements ,of the growth and
establishment of plants and an assessment of the invasion of exotic species. Botanical
monitoring will be conducted toward the end of the growing season between September
and November. Sampling times will be consistent' from year to year. The monitoring
data will be included in the annual reports.
Vegetation growth and establishment will be quantitatively assessed through the use of
10 foot by 100 meter belt transects beginning in the second year of the project. A total of
6 belt transects will be randomly located in the 2.58-acre mitigation area. Transects. will
be located to effectively sample all portions of the mitigation area and will be
permanently staked with a 4-foot t-post placed at the end of each transect. Data collected
from these belt transects will be used to evaluate project performance relative to success
standards (Section 3). Data will be collected on vegetative composition, canopy cover,
and tree height. A statistically valid sample of at least 5 percent of planted trees will be
used to determine tree height. Volunteer establishment of native wetland species will
319721000 31
also be noted and measured as appropriate. A sample data sheet is included in
Appendix A.
Permanent photo viewpoints will also be established and photos taken from the same
location each year. In addition, photos will be taken of each botanical transect. These
photos will be included in each annual report.
7.3 ANNUAL REPORTS
Monitoring reports will be filed annually for 5 years, beginning approximately 1 year
after installation. Reports will detail project progress and remedial. measures
recommended and implemented during the report period. Reports at the end of each year
will include a summary and analysis of the abiotic and biotic monitoring data collected
and an evaluation of project progress relative to success standards. Copies of all yearly
monitoring reports will be sent to the City of Carlsbad and the resource agencies.
The annual reports will contain the following information:
A list of names, titles, and companies of all persons who prepared the annual report
and participated in monitoring activities for that year;
A copy of the resource agencies permits or agreements, including any attached
Special Conditions, and any subsequent letters of modification, as an appendix;
An analysis with discussion of all quantitative monitoring data, prepared in graph and
table format;
Prints or color photo copies of all monitoring photographs;
Maps identifying monitoring areas, transects, planting zones, etc. as appropriate; and
Raw botanical data included in the appendix of each annual report.
F'
319721000 32
7.4 SCHEDULE
The monitoring program will begin before construction commences with a
precOnstruction education session between the contractors involved in project
construction and the restoration biologist. Monitoring will continue for 5 years after
completion of installation or until the project is given final approval by resource agencies..
The wetland mitigation area's project schedule is somewhat dependent on when the
mitigation area is actually installed.. Project schedules anticipate the wetland mitigation
area will be planted. during the fall months of 2000 and the 5-year maintenance and
biological monitoring period will begin once the wetland mitigation area has been
certified as complete. .
The monitoring period is specified to be 5 years after completion and approval of
installation. The resource agencies may terminate monitoring earlier than 5 years if it has
met all its goals. Only areas failing to meet the success standards will require additional
work and remedial measures. This process will continue until year 5 standards are met,
I or -until- the regulatory agencies determine that other mitigation measures are appropriate.
8.0 COMPLETION OF THE MITIGATION
8.1 NOTIFICATION OF COMPLETION
Once the wetland mitigation area has successfully completed its 5-year maintenance and
momtorng program, the City of Carlsbad shall notify the resource agencies in a letter
accompanying the fifth annual report. Included with the notification letter and annual
report will be a current jurisdictional delineation for the wetland mitigation area, with all
copies of field data sheets.
8.2 AGENCY CONFIRMATION
Following submission of the fifth annual report, notification letter of successful
completion of the wetland mitigation program, and jurisdictional wetland delineation, the
resource agencies may require a site visit to verify successful completion.
31.9 721000 33
9.0 CONTINGENCY MEASURES
®r ", • This section describes contingency measures that might be taken if the wetland mitigation
,•', area fails to meet any of its stated success standards in any given year of the 5-year ,
maintenance and monitoring program.
3 -
9.1 INITIATING PROCEDURES
j
If any success standards are not met in any year or if any portion of the wetland
mitigation area fails to meet its 5-year success standards, the restoration biologist will
prepare an analysis of the causes of failure. If necessary, remedial measures will be
proposed to address the problem. Maintenance and monitoring obligations may be
extended until the success standards have been met or the resource agencies have
I; approved alternative mitigation.
1 9.2 ALTERNATIVE LOCATIONS FOR CONTINGENCY MEASURES
No alternative locations for the wetland mitigation are proposed as part of this mitigation
plan.
9.3 FUNDING MECHANISM
The funding mechanisms for the project have not been identified. This information will •
be provided in the final mitigation plan or provided to the resource agencies prior to
beginning the mitigation installation.
9.4 RESPONSIBLE PARTIES
The City of Carlsbad will have final responsibility for implementing, monitoring, and
contingency, efforts for this mitigation project. The City of Carlsbad. will also be
responsible for hiring a restoration biologist to oversee the project and landscape
installation and maintenance contractors.
319721000 34
P 10.0 REFERENCES
Environmental Laboratory. 1987. "Corp of Engineers Wetlands Delineation Manual,"
Technical Report Y-87-1, U.S. Army Engineer Waterways Experiment Station,
Vicksburg, Miss.
Tetra Tech, Inc. 1997. Conceptual Wetlands Mitigation Plan for Reaches I and 2 of the
Cannon Road Extension Project. Prepared for the City of Carlsbad. January.
Tetra Tech, Inc. 1998. Addendum to Conceptual Wetlands Mitigation Plan for Reaches
1 and 2 of the Cannon Road Extension Project. Prepared for the City of Carlsbad.
February.
319721000 35
APPENDIX A
SAMPLE DATA SHEET
Sample Data Sheet
n - Date
id
Page 1