HomeMy WebLinkAboutRCC AGENDA PK 2002/06/27
Mitigated Negative Declaration
PROJECT NAME: East H Street Widening
PROJECT LOCATION: East H Street in the City of Chula Vista between
Interstate 805 and a point located approximately
600 feet east of Hidden Vista Drive
PROJECT APPLICANT: City of Chula Vista
DOCUMENT NUMBER IS-02-36
DATE June 27, 2002
A. Proiect Setting
The proposed project site is located in the city of Chula Vista, within the South
Bay area of metropolitan San Diego in the county of San Diego. Chula Vista is
located approximately seven miles south of the city of San Diego's downtown
business district and approximately seven miles north of the international border
near Tijuana, Mexico (Figures I and 2).
East H Street, east of Interstate 805 (1-805), is the northernmost of three parallel
routes that are expected to serve Chula Vista's southern Sweetwater community
and Eastern Territ0l1es. The neighborhoods and planned areas of the Eastern
Tenitories are projected to experience rapid growth over the next two decades.
The project area of East H Street, which is designated as a scenic roadway in the
City's General Plan, traverses the westerly end of Rice Canyon. The ridgetop
located directly to the north of the project area contains the Terra Nova
community and is developed with single-family residences and condominiums.
The Terra Nova Plaza is a large commercial shopping center that lies to the south
of the project area. This area contains over 50 stores including a supennarket, a
sporting goods store, a drug store, and several restaurants. Hilltop High School,
which is located approximately one-quarter of a mile to the west of the project
area on the west side of 1-805, is the nearest school. Clear View Charter
Elementary School and Halecrest Elementary School are also located near the
project site, both just over one-half mile to the northeast and southeast of the site,
respectively.
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East H Street is classified as a six-lane Prime Arterial from 1-805 to Otay Lakes
Road, and a four-lane Major Arterial east of Otay Lakes Road, Currently, East H
Street contains six lanes of divided roadway that narrows to four lanes of divided
travel east of Otay Lakes Road. Both sides of East H Street have the-foot bike
lanes and the posted speed limit is 40 miles per hour. There are also several bus
stops with turnouts along East H Street including one within the project area,
located on the north side, just east of Hidden Vista Drive.
The landscaped area immediately north of the segment of East H Street proposed
to be widened lies within a landscape maintenance district as established by the
City of Chula Vista, Existing landscaping within the proposed project area
consists of ornamental, non-native plants interspersed with some native plant
species covering both the slope located to the north of East H Street and in the
planter located in the median of the roadway. The landscape plants include native
plants such as western sycamore (Platanus racemosa) and lemonade berry (Rhus
imegrifolia) and ornamental plants including eucalyptus (Eucalyptus spp.), golden
wattle (Acacia pycnantha), rubber tree (Ficus elastica), Indian laurel (Ficus
retusa), lantana (Lantana camera), and mock orange (Pittosporum tohira). The
non-native vegetation also consists of invasive, weedy species such as hottentot
fig (Carpohrotus edulis), cheeseweed (Malva parviflora), and crystalline ice plant
(Mesemhryanthemum crystallinum), which encroach into the bare patches
between the ornamental plant species.
B. Proiect Description
The proposed project involves widening East H Street from approximately 600
feet east of Hidden Vista Drive to the Caltrans 1-805 right-of-way boundary at the
northbound on-ramp from three to four westbound lanes. The total length of the
proposed improvement is approximately 1,700 feet or 0.3 mile. The proposed
additional lane will have a width of 12 feet; the other through lanes will be II to
12 feet in width. Westbound East H Street will be striped to transition to three
lanes at the 1-805 northbound ramp (one right only and two through only). Under
interim conditions, the new lane will transition into the existing right only lane.
Caltrans plans to widen the on-ramp to three lanes in the future, at which time
East H Street will be striped with one through, one right-through, and two right
only lanes. The project will also require the relocation of the existing bike lane to
a location at the northern edge of the proposed roadway, The project is consistent
with the City of Chula Vista General Plan Circulation Element and Roadway
Standards.
As a result of the proposed widening of East H Street, Hidden Vista Drive would
need to be reconstructed between East H Street and a point approximately 105
feet north of the existing edge of East H Street. The reconstruction of this street
4
segment would be required in order to meet the vertical curve design standards of
the City's Subdivision Manual at the Hidden Vista Drive approach to the East H
Street intersection.
Along with the roadway improvements, at the request of Chula Vista Transit an
existing westbound bus stop will be moved from its present location east of
Hidden Vista Drive to a location approximately 40 feet west of Hidden Vista
Drive. The bus stop will provide a standard size bus stop pad and two new
shelters with benches, which will meet all Americans with Disabilities Act (ADA)
requirements. Although the existing bus stop has a bus turn-out, at the request of
Chula Vista Transit the relocated bus stop will not.
The proposed project includes the construction of several retaining walls in the
area north of East H Street in order to accommodate the portion of the
embankment that will be removed as required for the lane addition. The retaining
walls are proposed as plantable, crib walls of varying lengths, ranging from 40
feet to 490 feet; and varying heights, ranging from a maximum height of 9 feet to
2 feet. The maximum crib wall height of approximately 8 to 9 feet is proposed to
the north of the relocated bus stop. Figure 3 shows the proposed improvements.
Figure 4 is an aerial photograph of the project location.
Figures 5, 6, and 7 consist of landscape concept sketches proposed to accompany
the roadway improvements to East H Street. A detailed discussion of the design
features is included below in the Landscape section.
The right-of-way (ROW) for East H Street will need to be expanded by
approximately 12 feet to accommodate the additional lane, plus an additional
amount for an approximately 40-foot by l2-foot maintenance vehicle turnout area
to the west of the retaining wall. The additional required ROW area presently is
part of the City-owned open space (part of a landscape maintenance district).
The project will require an estimated grading quantity of 2,500 cubic yards,
including both cut and fill earthwork. The majority of the earthwork is anticipated
to be cut.
Landscape Concept Plan
As a major arterial roadway, East H Street services a great number of residences
within eastern Chula Vista as well as a variety of other land uses. The City of
Chula Vista General Plan - Land Use Element describes East H Street as follows:
'The view from the scenic roadway to these varied land uses is an important asset
to the scenic route. It is also an important consideration to maintain a consistent
quality of development and landscaping along the entire route." The theme for
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East H Street has been established long ago and has since been modified by the
development further to the east This particular section of the roadway proposed
to be widened is the older section of the roadway and is well established and
provides a great visual enhancement that is consistent with the theme further to
the east
The proposed landscape concept plan for the project area is as follows:
Trees:
· Larger specimen trees to replace the existing trees - similar structure, form
interest and similar species to replace the ones removed during construction.
Shrubs:
· Small to medium height shrubs with flower color to match existing landscape
palettes. The designer should consider the replacement of the existing turf
areas within the monument areas with long-term, hardy groundcover and a
combination with the shrubs palettes.
Groundcover:
· Low groundcover as an under story to the shrubs and trees. These
groundcovers should be evergreen, could be flowering or not and meet the
space requirements without undue maintenance to keep in check.
Plantable Crib Wall:
· Low groundcover plants to be placed within the planting cells of the walls.
This plant material shall utilize similar material found within this corridor or
replace plants with similar texture and flowering color acceptable by the City
of Chula Vista.
Monument Walls:
· Replace the existing monument walls and pilasters on each side of Hidden
Vista Drive to match the existing theme and design. The monument walls will
be reconstructed utilizing similar building materials, tile, color scheme,
lettering, and architecture.
12
Discretionary Approvals
The initial City of Chula Vista discretionary action is anticipated to be the City
Council's consideration of a financing agreement with certain developers to
construct the proposed improvements. A subsequent City of Chula Vista
discretionary action would be the awarding of a construction contract for the
proposed improvements by the City Council. Discretionary permits anticipated
are identified under "Responsible Agencies" below.
Lead Agency
In conformance with Section 15050 and 15367 of the California Environmental
Quality Act Guidelines, the City of Chula Vista is the "lead agency," which is
defined as the "public agency which has the principal responsibility for carrying
out or approving a project."
Responsible Agencies
. Regional Water Quality Control Board (National Pollutant Discharge
Elimination System pennit)
. Caltrans (Encroachment pennit)
C. Compatibility with Plans and Thresholds
General Plan/Circulation Element Designations
The project area portion of East H Street is classified as a six-lane Prime Arterial
in both the Circulation Element of the County of San Diego and the Adopted City
of Chula Vista General Plan (City of Chula Vista 1989a), The proposed addition
of a fourth, 12-foot, westbound lane for approximately 1,700 feet on East H
Street, just east of I-80S, is consistent with the goals and objectives of these plans.
Traffic and Growth Management Thresholds
The purpose of the proposed East H Street Improvements Project is to increase
the roadway capacity and decrease traffic congestion in accordance with the
City's Growth Management Ordinance (GMO) threshold standards for traffic
congestion.
According to the traffic analysis prepared by Linscott, Law, & Greenspan, dated
May 14, 2002, the GMO segment of East H Street east of I-80S is currently
operating at an acceptable Level of Service (LOS). The proposed additional lane
13
is anticipated to improve the LOS on this segment of East H Street. The traffic
analysis also indicates that the proposed project is anticipated to decrease delay at
two of the three intersections within the project area during the AM and PM peak
hours, although LOS would remain the same (LLG 2002).
The East H Street Improvements Project will improve traffic operations on
westbound East H Street, within the project area. Therefore, the project will be
beneficial in maintaining compliance with the City's Growth Management
Ordinance threshold standards for traffic congestion.
D. Identification of Environmental Effects
An Initial Study conducted by the City of Chula Vista (including an attached
Environmental Checklist Form) determined that the proposed project could have a
significant environmental effect, but that the effects would be mitigated by the
measures incorporated into the project. Therefore, preparation of an
environmental impact report will not be required. This Mitigated Negative
Declaration has been prepared in accordance with Section 15070 of the State
CEQA Guidelines.
E. Mitigation Necessarv to Avoid Significant Impacts
A discussion of potentially significant impacts from the proposed project and
mitigation measures to reduce these impacts to below a level of significance is
provided below. A Mitigation Monitoring and Reporting Program (MMRP) and
MMRP Checklist are attached to this Mitigated Negative Declaration as
Attachment A and Table I, respectively.
Air Quality
There is the potential for significant, short-term air quality impacts to occur
during the construction of the proposed roadway improvements. The following
mitigation measures would reduce these impacts to below a level of significance.
Mitigation Measures:
I. Dust-reducing measures shall include regular watering of graded surfaces
and restriction of all construction vehicles and equipment to travel along
established and regularly watered roadways at specified speeds.
2. During construction, stockpiled materials that can potentially become
airborne shall be covered or periodically watered,
14
3. During construction, dirt and debris shall be washed down or swept up as
soon as practicable to reduce the resuspension of particulate matter caused
by vehicle movement over such material. Approach routes to the
construction area shall be cleaned daily of construction-related dirt and
debris.
4. In accordance with California Vehicle Code Section 23114, vehicles
transporting loads of aggregate materials must cover/tarp the material, or
if not covered, the material must be no nearer than six inches from the
upper edge of the container area where the material contacts the sides,
front, and back of the cargo container area, and the load shall not extend,
at its peak, above any part of the upper edge of the cargo container area,
5. Construction equipment shall be maintained in proper working order and
shall be periodically tuned in order to minimize air pollutant emissions;
use of low pollutant-emitting construction equipment, including electrical-
powered equipment, shall be used as practical.
6. Soil disturbance and travel on unpaved surfaces shall be suspended when
wind speeds exceed 25 miles per hOUL
Biology
Several large trees including eucalyptus and sycamore trees are located within the
project area, within the landscaped area north of East H Street. At least two
sycamore and two eucalyptus trees would likely need to be removed in order to
accommodate the additional lane and retaining walls proposed with the project.
Sycamore and eucalyptus trees are potential nesting habitat for raptors, including
Cooper's hawk, All active raptor nests are protected under the California
Department of Fish and Game Code Section 3503.5. The loss or abandonment of
an active raptor nest by removal or disturbance associated with project
construction would be considered a significant impact. To avoid this potentially
significant impact, the following mitigation is required.
Vegetation including primarily Diegan coastal sage scrub exists as close as 100
feet from the western boundary of the project site. This vegetation provides
potential habitat for the coastal California gnatcatcheL
Mitigation Measures:
I. Prior to the removal or alteration of any mature trees or the
commencement of construction activities during the raptor nesting season,
15
identified as December I through May 31 in the Draft Chub Vista MSCP
Subarea Plan, a qualified biologist shall conduct a pre-construction survey
of such trees as well as those within the construction impact area
established by the biologist. In the event that a nest(s) is found during the
survey, appropriate construction setbacks deemed appropriate by a
qualified biologist to protect young birds until they are no longer
dependent upon the nest shall be established. No restrictions with respect
to tree removal or construction setbacks shall apply outside the raptor
nesting season.
2. Prior to the approval of any improvement plans or the issuance of any
grading pennit, the Environmental Review Coordinator shall ensure that
the plans and specifications include a note regarding the survey
requirements and construction restrictions during the raptor nesting season
as outlined in measure #1.
3, During the gnatcatcher breeding season, between February 15 and
August 15, noise levels generated by project-related construction activities
shall not exceed 60 decibels (dB) Community Noise Equivalent Level
(CNEL) within any area containing an occupied nest or, if no occupied
nest exists, within the area occupied by a potential breeding pair in order
to prevent construction noise from negatively impacting breeding success.
Where the ambient noise level is greater than 60 dB CNEL, the ambient
noise level shall not be exceeded as a result of project-related construction.
If an occupied nest or potential breeding pair is identified during a pre-
construction survey, noise mitigation techniques, such as temporary noise
walls or berms or modifications to construction activities, deemed
necessary to attenuate construction noise levels within affected areas to 60
dB CNEL or less shall be formulated by a qualified biologist and qualified
acoustician and shall be implemented during the breeding season, The
qualilïed acoustician shall monitor the success of any noise attenuation
measures that are implemented; where a violation of the noise level limit
is identified, the acoustician shall immediately notify the Environmental
Review Coordinator so that construction activities can be halted or
reduced to avoid further exceedances of the limit until sufficient alternate
or modified noise attenuation measures, if any, can be implemented.
4, Prior to the approval of any improvement plans or the issuance of any
grading or building permit, the Environmental Review Coordinator shall
ensure that the plans and specifications include a note regarding the
construction noise restrictions during the coastal California gnatcatcher
breeding season as outlined in measure #3.
16
Paleontology
There is a high paleontological (fossil) resource sensitivity in the Terra Nova area,
within and near the proposed East H Street Widening project area. The
disturbance of paleontological resources during project construction would be
considered a significant impact requiring mitigation. Therefore, paleontological
monitoring within undisturbed rock units shall be required. This does not,
however, apply to fill areas.
Mitigation Measure:
l. Prior to the issuance of any grading pennit, the applicant shall confinn to
the City of Chula Vista Environmental Review Coordinator (ERe) that a
qualified paleontologist has been retained to carry out the following
mitigation program. A qualified paleontologist is defined as an individual
with an M.S. or Ph.D. in paleontology or geology who is familiar with
paleontological procedures and techniques. The following mitigation
program shall be implemented to the satisfaction of the ERC:
a. The paleontologist shall attend applicable preconstruction meetings
to consult with grading and excavation contractors.
b. A paleontological monitor shall be on-site at all times during the
original cutting of previously undisturbed geologic fonnational
material to inspect cuts for fossils (A paleontological monitor is
defined as an individual who has experience in the collection and
salvage of fossil materials.). The paleontological monitor shall
work under the direction of a qualified paleontologist.
c. If fossils are discovered, the paleontologist (or paleontological
monitor) shall oversee the recovery of such resources. In instances
where recovery requires an extended sal vage period, the
paleontologist (or paleontological monitor) shall be allowed to
temporarily direct, divert, or halt grading to allow for the recovery
of fossils in a timely manner. Where deemed appropriate by the
paleontologist (or paleontological monitor), a screen-washing
operation for small fossil remains shall be set up.
d. Prepared fossils, along with copies of all pertinent field notes,
photographs, and maps, shall be deposited (with the applicant's
permission) 111 a scientific institution with paleontological
collections such as the San Diego Natural History Museum. A
final summary report shall be completed which outlines the results
of the mitigation program. This report shall include discussion of
the methods used, stratigraphy exposed, fossils collected, and
significance of recovered fossils.
17
F. Consultation
L Individuals and Organizations
City of Chula Vista:
Paul Hellman, Environmental Projects Manager
Mary Ladiana, Environmental Projects Manager
Marilyn Ponseggi, Environmental Review Coordinator
2. Documents
The following documents were used during the preparation of the initial
study/environmental checklist and the mitigated negative declaration. Many
are available for review at the City of Chula Vista Planning and Building
Department, located at 430 F Street, Chula Vista, California 91910.
Beranek, Leo L., editor
1988 Noise and Vibration Control. Institute of Noise Control
Engineering, Washington, D.C.
Bolt, Beranek, and Newman, Inc.
1973 Fundamentals and Abatement of Highway Traffie Noise. Prepared
for the Federal Highway Administration. Report No. PB-222-703.
June.
California Air Resources Board
1998 Emission Inventory /996. Prepared by Technical Support
Division, Emission Inventory Branch. October.
California Department of Conservation
1996 Generalized Mineral Land Class(fication Map of San Diego
County. Division of Mines and Geology.
California, State of
2001 Regional Water Quality Control Board, San Diego Region,
National Pollutant Discharge Elimination System (NPDES) Permit
No. CAS 0108758 for Waste Discharge Requirements.
Chula Vista, City of
1989a General Plan.
1989b General Plan Update Final Environmental Impact Report.
18
2000 City of Chula Vista Draft Multiple Species Conservation Program
(MSCP) Subarea Plan. October-
Federal Highway Administration
1979 FHW A Noise Prediction Model, Report No. FHW A-RD-77-108,
with California Vehicle Noise Emissions Levels. Federal highway
Administration, Washington D.C.
Linscott, Law, & Greenspan (LLG)
2002 Eastern Chula Vista Traffic Capacity Enhancement, East "H"
Street Improvements, Chula Vista, California, May.
RECON Environmental
2002a Results of Archaeological Survey for the East H Street Project.
February.
2002b Air Quality Report for the Capacity Enhancements - East H Street
Improvements Project, Chula Vista, California. May.
2002c Revised Biology Technical Report for Capacity Enhancements -
East H Street Improvements, Chula Vista, California. May.
2002d Noise Technical Report for the Capacity Enhancements - East H
Street Improvements Project, Chula Vista, California. May.
San Diego, County of
1996 Integrated Waste Management Plan.
2002 Ha~ardous Materials Establishment Listing Search. San Diego
County Department of Environmental Health Internet Site. URL
http://www.co.san-diego.ca.us/cnty/cntydepts/land use/en v _heal th.
January
U.S. Department of Agriculture
1973 Soil Survey. San Diego Area. California. Soil Conservation
Service and Forest Service. December.
3. Initial Study
This environmental detennination is based on the attached Initial Study,
any comments received on the Initial Study, and any comments received
during the public review period for this Mitigated Negative Declaration.
19
The report reflects the independent judgment of the City of Chula Vista,
Further infonnation regarding the environmental review of this project is
available from the Chula Vista Community Development Department, 430
Davidson Street, Suite B. Chula Vista, CA 91910.
tJ {l J/yJ!L 6'!z7 /01-
-ß-r Marilyn R. F. Ponseggi ' I
Date
Environmental Review Coordinator
20
ATTACHMENT A
Mitigation Monitoring and Reporting Program
ATTACHMENT A
MITIGA TION MONITORING AND REPORTING PROGRAM (MMRP)
East H Street Widening
IS-02-36
This Mitigation Monitoring and Reporting Program has been prepared by the City of Chula Vista
in conjunction with the proposed East H Street Widening (IS-02-36). The proposed project has
been evaluated in an Initial Study/Mitigated Negative Declaration (IS/MND) prepared in
accordance with the California Environmental Quality Act (CEQA) and City/State CEQA
guidelines. The legislation requires public agencies to ensure that adopted mitigation measures
are adequately implemented and monitored.
AB 3180 requires monitoring of potentially significant and/or significant environmental impacts.
The Mitigation Monitoring and Reporting Program for this project ensures adequate
implementation of mitigation for the following potential impacts:
L Biological Resources
2. Paleontological Resources
3. Air Quality
MONITORING PROGRAM
Due to the nature of the environmental issues identified, the Mitigation Compliance Coordinator
shall be the Environmental Review Coordinator for the City of Chula Vista. The applicant shall
be responsible to ensure that the conditions of the Mitigation Monitoring and Reporting Program
are met to the satisfaction of the Environmental Review Coordinator. The applicant shall
provide evidence in written fonn confirming compliance with the mitigation measures specified
in MND/IS-02-36 to the Environmental Review Coordinator. The Environmental Review
Coordinator will thus provide the ultimate verification that the mitigation measures have been
accomplished,
Table I, Mitigation Monitoring and Reporting Program Checklist, lists the mitigation measures
listed in Section F, Mitigation Necessary to A void Significant Impacts, of the Mitigated Negative
Declaration, which will be implemented as part of the project. In order to detennine if the
applicant has implemented the measure, the method and timing of verification are identified,
along with the City department or agency responsible for monitoring/verifying that the applicant
has completed each mitigation measure, Space for the signature of the verifying person and the
date of inspection is provided in the last column,
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East H Strcct
ENVIRONMENTAL CHECKLIST FORM
1, Project Title:
East H Street Widening
2, Lead Agency Name and Address:
City of Chula Vista, Planning & Building Department, 276 Fourth A venue, Chula Vista, CA 91910
3, Contact Persons and Phone Number:
Paul Hellman, Environmental Projects Manager, (619) 585-5680
4, Document Number:
IS-02-36
I
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
L AESTHETICS. Would the project:
a) Have a substantial adverse effect on a scenic vista? D D ~ D
b) Substantially damage scenic resources, including, but D D ~ D
not limited to, trees, rock outcroppings, and historic
buildings within a state scenic highway?
c) Substantially degrade the existing visual character or D D ~ D
quality of the site and its surroundings?
d) Create a new source of substantial light or glare, D D ~ D
which would adversely affect day or nighttime views in
the area?
Comments:
Response to la, The proposed project involves widening East H Street from approximately 600 feet east
of Hidden Vista Drive to 1-805 from three to four westbound lanes. Westbound East H Street will be
striped to transition to three lanes at the 1-805 northbound ramp (one right only and two through only),
Under interim conditions, the new lane will transition into the existing right only lane. Caltrans plans to
widen the on-ramp to three lanes in the future, at which time East H Street will be striped with one
through, one right-through, and two right only lanes,
According to page 1-67 of the City of Chula Vista General Plan, East H Street from 1-805 to Hunte
Parkway is designated as a scenic roadway. Pages 1-72 and 1-73 of the City of Chula Vista General Plan
state that "the development of the City's scenic highway is anticipated to occur concurrently with
development of adjacent properties" and "whenever possible all slopes or common areas adjacent to a
scenic route shall be placed in an Open Space Maintenance District pursuant to City Ordinance No. 1400
to insure a consistent plan of landscaping and a level of maintenance with the scenic quality of the route."
See reference Photographs I through 4 to view the visual character of the project segment of East H Street
and surrounding areas.
The City of Chula Vista General Plan - Land Use Element describes East H Street as follows: "The view
from the scenic roadway to these varied land uses is an important asset to the scenic route. It is also an
important consideration to maintain a consistent quality of development and landscaping along the entire
route." The theme for East H Street has been established long ago and has since been modified by the
development further to the east. The particular section of the roadway proposed to be widened is the older
section of the roadway, is well established, and provides a great visual enhancement that is consistent with
the theme further to the east.
2
PHOTOGRAPH 1
Looking East, Showing Fill Slope
on North Side of East H Street
~[~N PHOTOGRAPH 2
[@ Typical Slope Height and Vegetation Cover
on North Side of East H Street
M:jobs\3583\arch\graphics\potos!-2,cdr
PHOTOGRAPH 3
Looking West down East H Street Toward
the Interstate 805 Interchange
~ffi]N PHOTOGRAPH 4
[@ Looking East along East H Street, Showing Slope
and Landscaping on South Side of Road
M:jobsIJ583\arcb\graphics\potosJ-4.cdr
East H Street
The proposed landscape concept plan for the project area consists of the use of larger specimen trees with
similar structure, form and species to replace the existing trees removed during construction; the use of
small to medium height shrubs with flower color to match the existing landscape; the replacement of
existing turf areas within the monument areas with long-term, hardy groundcover; the use of evergreen
groundcover that meets the space requirements and does not require undue maintenance; the use of
plantable crib walls with low groundcover plants placed within the planting cells similar to those found
within the East H Street corridor or of similar texture and flowering color as determined acceptable by the
City; and the use of monument walls and pilasters on each side of Hidden Vista Drive to match the theme
and design of the existing monument walls and pilasters, including similar building materials, tile, color
scheme, lettering, and architecture. As a result of the measures included in the proposed landscape
concept plan, the proposed project will have a less than significant effect on the scenic character of the
area.
Response to lb. Other than the landscaped areas that lie to the north of East H Street, the proposed
project area does not include any significant scenic resources, such as rock outcroppings or historic
buildings that may contribute to the scenic quality of the area. The existing scenic resources in the project
area consist of a landscaped median in the center of East H Street and planted, landscaped slopes, which
include medium and large shrubs and trees, that extend in most cases well over 100 feet north of East H
Street. Two eucalyptus trees and two sycamore trees may need to be removed as a result of the activities
associated with the proposed lane addition. The removal of this small quantity of trees will result in a less
than significant impact to the scenic quality of the area. The project will only slightly alter the appearance
of the existing roadway and will not create new significant aesthetic impacts.
Response to Ie, See responses Ia and lb above. The proposed additional westbound traffic lane on East H
Street will result in a wider roadway as viewed from surrounding areas. The project design incorporates
the maintenance of the current appearance of the areas just off the roadway, This includes implementing a
landscape concept plan with several measures that are necessary to maintain the existing visual character
of the East H Street scenic route, These measures include the replacement of trees, shrubs, groundcovers,
and monument walls to match the features that are currently present in the project area, Plantable crib
walls will also be constructed within the project area and will contain low groundcover plants within the
planting cells of the walls. These plants will be similar to those currently found within the corridor or of
similar texture and flowering color as determined to be acceptable by the City, Project approval will not
result in any significant impact to community aesthetics or visual quality.
Response to Id. The improvements associated with an additional westbound lane on East H Street may
result in a slight increase in the light/glare reflected off the wider roadway. However, the light and glare
conditions along East H Street would be very similar to what they are now and therefore, project approval
will not result in a significant adverse effect on daytime or nighttime views in the area.
Aesthetic Mitigation
Limited removal of eucalyptus and sycamore trees is not considered a significant impact. The
maintenance of the existing landscape palette as proposed with the landscape concept plan will ensure that
5
East H Street
the quality of development and landscaping in the project area north of East H Street will continue to
provide views that are consistent with the adjacent areas within the scenic landscape corridor. There are
no other significant scenic resources identitied in the project area, Therefore, no mitigation is required.
6
East H Street
Less Than
Significant
PotentiaHy with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
IL AGRICULTURE RESOURCES. In determining whether
impacts to agricultural resources are significant environ-
mental effects, lead agencies may refer to the California
Agricultural Land Evaluation and Site Assessment Model
(1997) prepared by the California Department of
Conservation as an optional model to use in assessing
impacts on agriculture and farmland. Would the project
a) Convert Prime Farmland, Unique Farmland, or 0 0 0 ~
Farmland of Statewide Importance (Farmland), as
shown on the maps prepared pursuant to the
Farmland Mapping and Monitoring Program (FMMP)
of the California Resources Agency, to non-
agricultural use?
b) Conflict with existing zoning for agricultural use, or a 0 0 0 ~
Williamson Act contract?
c) Involve other changes in the existing environment 0 0 0 ~
which, due to their location or nature, could result in
conversion of Farmland to non-agricultural use?
Comments:
Response to lIa. The land within the proposed project area has been previously designated for the
development of East H Street improvements. As a result, it is not included on maps prepared by the
California Resources Agency pursuant to the FMMP and therefore does not contain designated Prime
Farnlland, Unique Farmland, or Fannland of Statewide Importance. No impacts to agricultural resources
would result
Response to lIb, See Response to IIa. The proposed project will not conflict with existing zoning or
agricultural uses, or a Williamson Act contract
Response to lIe. Construction of the additional lane will not result in additional pressure to convert
fannland to nonagricultural uses. The project area is bordered by existing commercial and residential
development and landscaped areas,
Agriculture Mitigation
No significant impacts to agricultural resources have been identified and, therefore, no mitigation is
required.
7
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
ilL AIR QUALITY. Where available, the significance criteria
established by the applicable air quality management or
air pollution control district may be relied upon to make the
fOllowing determinations. Would the project:
a) Conflict with or obstruct implementation of the 0 [g 0 0
applicable air quality plan?
b) Violate any air quality standard or contribute 0 [g 0 0
substantially to an existing or projected air quality
violation?
c) Result in a cumulatively considerable net increase of 0 0 [g 0
any criteria pollutant for which the project region is
non-attainment under an applicable federal or state
ambient air quality standard (including releasing
emissions which exceed quantitative thresholds for
ozone precursors)?
d) Expose sensitive receptors to substantial pollutant 0 0 [g 0
concentrations?
e) Create objectionable odors affecting a substantial 0 0 [g 0
number of people?
Comments: An air quality report was prepared by RECON in May 2002 for the East H Street
Improvements Project (Appendix A).
Response to IlIa. The proposed additional lane will relieve existing and future traffic congestion along
the project area segment of westbound East H Street. Reduced traffic congestion, especially during peak
traffic hours, will result in less vehicle emissions than would result from the same volume of traffic on the
existing, more congested roadway.
According to the traffic analysis performed by Linscott, Law, and Greenspan (LLG), dated May 14,2002,
given both existing and future traffic volumes, the level of service (LOS) along the project-area portion of
westbound East H Street is calculated to improve. The traffic analysis also reports improvements in the
operations at the project-area intersections. Improving the LOS along the project area segment of
westbound East H Street and reducing delay at the intersections in the project area will result in a
reduction in the total amount of mobile source (automobile, bus, truck, etc) air pollutant emissions, both
on a local and regional scale.
8
East H Street
There is the potential for significant, short-term air quality impacts to occur during the construction of the
proposed roadway improvements. Sources of construction-related air emissions include fugitive dust from
grading activities and construction-related roadway travel, exhaust from construction equipment, and
exhaust from vehicles driven by workers and delivery drivers. The mitigation measures presented below
would reduce short-term air quality impacts that occur during construction to below a level of
significance,
East H Street is classitied as a six-lane Prime Arterial in the City of Chula Vista General Plan. Widening
East H Street to accommodate a fourth westbound lane for approximately 1700 feet, leading to the 1-805
northbound on-ramp, is consistent with the goals and objectives of the current Regional Air Quality
Strategy (RAQS) for San Diego and the State Implementation Plan (SIP). The SIP documents the
necessary overall strategy and individual tactics by which the San Diego Air Basin can meet its air
pollutant attainment goal. Consequently, air emissions associated with this project have been accounted
for in the RAQS. Aside from short-tenn, construction-related air emissions, no adverse air quality impacts
are anticipated due to implementation of this project.
Response to IlIb. See response to IIIa above. According to the air quality report, since the proposed
project reduces traffic congestion, which leads to a reduction in vehicle air pollutant emissions, the project
will result in a regional air quality improvement. The project is also consistent with the growth
assumptions in the RAQS and SIP. Existing federal and state air quality regulations require that the
project implement control measures to reduce dust and other criteria pollutants through use of best
management practices (BMPs) during construction and best available control technologies (BACTs)
during future roadway operations.
Significant, short-term air quality impacts would occur during the construction of the proposed roadway
improvements. The construction would involve emissions from heavy equipment and other construction-
related vehicles and emissions of fugitive dust. The mitigation measures presented below would reduce
short-term air quality impacts that occur during construction to below a level of significance.
Response to lIIc. See responses to IIIa and IIIb above. The proposed improvements to East H Street
will improve the level of service on East H Street and therefore decrease overall traffic-related vehicle
emissions on a regional level. As a result, the project will not result in a cumulatively considerable net
increase of any criteria pollutant.
Response to 1I1d. See response to IIIa above. According to the traffic report prepared by LLG, the
proposed widening of East H Street with an additional lane for approximately 1700 feet will improve the
LOS (LLG 2002). This will reduce the potential for the exposure of sensitive receptors to substantial
pollutant concentrations. The CO hot spot screening analysis, as described in the air quality repoli,
indicated that no localized CO concentrations in excess of the established state and federal standards are
anticipated to occur near sensitive receptors (RECON Environmental 2002b). Potential impacts are
therefore considered less than significant.
9
East H Street
Response to HIe, The proposed project will not create objectionable odors affecting a substantial number
of people, Any odors associated with construction would be temporary and the future use of a widened
East H Street would not produce any new odors that are not already present with the current roadway
configuration. Thus, impacts are less than significant.
Air Quality Mitigation
There is the potential for significant, short-term air quality impacts to occur during the construction of the
proposed roadway improvements. The following mitigation measures would reduce these impacts to
below a level of significance.
Mitigation Measures:
I. Dust reducing measures shall include regular watering of graded surfaces and restriction of all
construction vehicles and equipment to travel along established and regularly watered roadways at
specified speeds.
2. During construction, stockpiled materials that can potentially become airborne shall be covered or
periodically watered.
3, During construction, dirt and debris shall be washed down or swept up as soon as practicable to
reduce the resuspension of particulate matter caused by vehicle movement over such material.
Approach routes to the construction area shall be cleaned daily of construction-related dirt and
debris.
4. In accordance with California Vehicle Code Section 23114, vehicles transporting loads of
aggregate materials must cover/tarp the material, or if not covered, the material must be no nearer
than six inches from the upper edge of the container area where the material contacts the sides,
front, and back of the cargo container area, and the load shall not extend, at its peak, above any
part of the upper edge of the cargo container area.
5. Construction equipment shall be maintained in proper working order and shall be periodically
tuned in order to minimize air pollutant emissions; use of low pollutant-emitting construction
equipment, including electrical-powered equipment, shall be used as practical.
6, Soil disturbance and travel on unpaved surfaces shall be suspended when wind speeds exceed 25
miles per hour.
10
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
IV, BIOLOGICAL RESOURCES. Would the project:
a) Have a substantial adverse effect, either directly or 0 r8J 0 0
through habitat modifications, on any species
identified as a candidate, sensitive, or special status
species in local or regional plans, policies, or
regulations or by the California Department of Fish
and Game or U.S, Fish and Wildlife SelVice?
b) Have a substantial adverse effect on any riparian 0 0 0 r8J
habitat or other sensitive natural community identified
in local or regional plans, policies, or regulations or by
the California Department of Fish and Game or U,S,
Fish and Wildlife SelVice?
c) Have a substantial adverse effect on federally 0 0 0 r8J
protected wetlands as defined by Section 404 of the
Clean Water Act (including, but not limited to, marsh,
vernal pool, coastal, etc,) through direct removal,
filling, hydrological interruption, or other means?
d) Interfere substantially with the movement of any native 0 r8J 0 0
resident or migratory fish or wildlife species or with
established native resident or migratory wildlife
corridors, or impede the use of native wildlife nursery
sites?
e) Conflict with any local policies or ordinances 0 0 0 r8J
protecting biological resources, such as a tree
preselVation policy or ordinance?
f) Conflict with the provisions of an adopted Habitat 0 0 0 r8J
ConselVation Plan, Natural Community ConselVation
Plan, or other approved local, regional, or state habitat
conselVation plan?
Comments:
Response to IVa. The project site is in an area that contains mainly ornamental landscaping. In an
attempt to locate any species or native vegetation communities having special status in policies or
regulations by the California Department of Fish and Game or U.S. Fish and Wildlife Service, a botanical
and zoological survey was performed by RECON on February 18,2002. None were identified within the
project area during the survey. A band of native vegetation, including Diegan coastal sage scrub, was
located as close as 100 feet from the western edge of the project site. In the area located west/northwest of
the project area, east of 1-805, there is a small north-south trending valley that contains native plant cover.
II
East H Street
This vegetation provides potential habitat for the coastal California gnatcatcher. Due to its proximity to
the project area, mitigation is required dUling project construction in order to avoid potential noise
impacts to coastal California gnatcatchers.
As described in the biological technical report prepared by RECON for this project, there are several
eucalyptus and sycamore trees within the project area that are potential nesting areas for raptors, including
Cooper's hawk (Appendix B). Mitigation is required during project construction in order to avoid
potential impacts to raptor nests (RECON Environmental 20mc). Other than potential impacts to raptor
nests and coastal California gnatcatcher habitat during construction, the biological report concludes that
the proposed project is not anticipated to impact any plant or wildlife species that are listed, threatened,
endangered, or any species that have special status in policies or regulations by the California Department
of Fish and Game or U.S. Fish and Wildlife Service.
Response to IVb. The proposed project will not impact any riparian or sensitive habitat since the site
does not support any substantial native vegetation communities.
Response to IV c. There are no wetlands in the proposed project area. Therefore, the project will have no
direct or indirect impact on state or federally protected wetlands as defined by Section 1600 of the State
Fish and Game Code or Section 404 of the Clean Water Act.
Response to IVd. Eucalyptus and sycamore trees that could host nests for raptors, including Cooper's
hawk, may need to be removed during the construction of the additional lane and crib walls as proposed
with the project. All active raptor nests are protected under the Fish and Game Code Section 3503.5.
Mitigation is required to ensure potential impacts to nesting raptors are kept below a level of significance.
Diegan coastal sage scrub exists as near as 100 feet from the western boundary of the project area, This
vegetation provides potential habitat for the coastal California gnatcatcher. Due to its proximity to the
project area, mitigation is required during project construction in order to avoid potential noise impacts to
coastal California gnatcatchers,
Response to IVe. The majority ofthe vegetation affected by the project are ornamental scrubs and ground
cover. The proposed project will not conflict with any local policies or ordinances protecting biological
resources.
Response to IVe, The proposed project area lies within a Development Area according to the City of
Chula Vista Draft MSCP Subarea Plan and, therefore, will not conflict with any habitat conservation plan.
Biological Resources Mitigation
The eucalyptus and sycamore trees within and adjacent to the project area may provide a nesting habitat
for raptors.
12
East H Street
Vegetation including primarily Diegan coastal sage scrub exists as close as 100 feet from the western
boundary of the project site. This vegetation provides potential habitat for the coastal California
gnatcatcher.
I. Prior to the removal or alteration of any mature trees or the commencement of construction
activities during the raptor nesting season, identified as December I through May 31 in the Draft
Chub Vista MSCP Subarea Plan, a qualified biologist shall conduct a pre-construction survey of
such trees as well as those within the construction impact area established by the biologist. In the
event that a nest(s) is found during the survey, appropriate construction setbacks deemed
appropriate by a qualified biologist to protect young birds until they are no longer dependent upon
the nest shall be established. No restrictions with respect to tree removal or construction setbacks
shall apply outside the raptor nesting season.
2. Prior to the approval of any improvement plans or the issuance of any grading permit, the
Environmental Review Coordinator shall ensure that the plans and specifications include a note
regarding the survey requirements and construction restrictions during the raptor nesting season as
outlined in measure # I.
3. During the gnatcatcher breeding season, between February 15 and August 15, noise levels
generated by project-related construction activities shall not exceed 60 decibels (dB) Community
Noise Equivalent Level (CNEL) within any area containing an occupied nest or, if no occupied
nest exists, within the area occupied by a potential breeding pair in order to prevent construction
noise from negatively impacting breeding success. Where the ambient noise level is greater than
60 dB CNEL, the ambient noise level shall not be exceeded as a result of project-related
construction. If an occupied nest or potential breeding pair is identified during a pre-construction
survey, noise mitigation techniques, such as temporary noise walls or berms or modifications to
construction activities, deemed necessary to attenuate construction noise levels within affected
areas to 60 dB CNEL or less shall be fonnulated by a qualified biologist and qualified acoustician
and shall be implemented during the breeding season. The qualified acoustician shall monitor the
success of any noise attenuation measures that are implemented; where a violation of the noise
level limit is identified, the acoustician shall immediately notify the Environmental Review
Coordinator so that construction activities can be halted or reduced to avoid further exceedances of
the limit until sufficient alternate or modified noise attenuation measures, if any, can be
implemented.
4, Prior to the approval of any improvement plans or the issuance of any grading or building permit,
the Environmental Review Coordinator shall ensure that the plans and specifications include a
note regarding the construction noise restrictions during the coastal California gnatcatcher
breeding season as outlined in measure #3.
13
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
V. CULTURAL RESOURCES. Would the project:
a) Cause a substantial adverse change in the 0 0 0 IZI
significance of a historical resource as defined in
§15064,5?
b) Cause a substantial adverse change in the 0 0 0 IZI
significance of an archaeological resource pursuant to
§15064,5?
c) Directly or indirectly destroy a unique paleontological 0 IZI 0 0
resource or site or unique geologic feature?
d) Disturb any human remains, including those interred 0 0 0 IZI
outside of formal cemeteries?
Comments:
Response to Va, A cultural resources record search of the archives at the South Coastal Information
Center at San Diego State University and the San Diego Museum of Man was conducted in December
2001 for the area within one-half mile of the project site. Several possible cultural resources were
identified within a one-half mile radius of the project site during the record search.
A field survey was petiormed by RECON on February 7,2002 (Appendix C). The field survey consisted
of an on-foot reconnaissance along East H Street for the entire length of the proposed project. The terrain
has been extensively altered from its original configuration by the construction of East H Street and
developments on both sides of the roadway. The toe of a 35- to 40-foot-high slope, which consists of both
fill and undisturbed rock and soil, extends for the entire length of the project on the north side of East H
Street. Much of this slope is man-made and was constructed during the development of Hidden Vista
Village. The estimated 2,500 cubic yards of grading associated with project will result in an encroachment
into the bottom of this slope at a horizontal distance of approximately 12 feet. No evidence of prehistoric
sites was found during the field survey of the project. No cultural or archeological resources were
identified during the survey of the north side of East H Street in the project area and based on existing
conditions, none are expected (RECON Environmental 2002a).
Response to Vb, See response to Va. The property has been previously graded and developed in
conjunction with the existing residential development in the Terra Nova neighborhood to the north of the
project site. There is currently no evidence of archaeological resources on the project site.
Response to Vc, Based on a high paleontological resource sensitivity in the project area and the presence
of undisturbed rock units within the slope to be graded for the project, a high potential for paleontological
14
East H Street
resources exists. The disturbance of paleontological resources during project construction would be
considered a significant impact requiring mitigation. Therefore, paleontological monitoring within
undisturbed rock units shall be required. This does not, however, apply to fill areas.
Response to V d. Based on the results of the cultural survey conducted on the site on February 7, 2002,
there is no evidence of any human remains on the project site or the potential for human remains to be
present.
Cultural Resources Mitigation
L Prior to the issuance of any grading pemit, the applicant shall confirm to the City of Chula Vista
Environmental Review Coordinator (ERC) that a qualified paleontologist has been retained to
carry out the following mitigation program. A qualified paleontologist is defined as an individual
with a M.S. or Ph.D, in paleontology or geology who is familiar with paleontological procedures
and techniques. The following mitigation program shall be implemented to the satisfaction of the
ERC:
a. The paleontologist shall attend applicable preconstruction meetings to consult with grading
and excavation contractors.
b. A paleontological monitor shall be on-site at all times during the original cutting of
previously undisturbed geologic fomational material to inspect cuts for fossils (A
paleontological monitor is defined as an individual who has experience in the collection
and salvage of fossil materials.). The paleontological monitor shall work under the
direction of a qualified paleontologist.
c. If fossils are discovered, the paleontologist (or paleontological monitor) shall oversee the
recovery of such resources. In instances where recovery requires an extended salvage
period, the paleontologist (or paleontological monitor) shall be allowed to temporarily
direct, divert, or halt grading to allow for the recovery of fossils in a timely manner.
Where deemed appropriate by the paleontologist (or paleontological monitor), a screen-
washing operation for small fossil remains shall be set up.
d. Prepared fossils, along with copies of all pertinent field notes, photographs, and maps,
shall be deposited (with the applicant's pemission) in a scientific institution with
paleontological collections such as the San Diego Natural History Museum. A final
summary report shall be completed which outlines the results of the mitigation program.
This report shall include discussion of the methods used, stratigraphy exposed, fossils
collected, and signitïcance of recovered fossils.
15
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
VL GEOLOGY AND SOILS. Would the project:
a) Expose people or structures to potential substantial
adverse effects, including the risk of loss, injury, or
death involving:
i) Rupture of a known earthquake fault, as delineated 0 0 [8J 0
on the most recent Alquist-Priolo Earthquake Fault
Zoning Map issued by the State Geologist for the area
or based on other substantial evidence of a known
fault? Refer to Division of Mines and Geology Special
Publication 42,
ii) Strong seismic ground shaking? 0 0 [8J 0
iii) Seismic-related ground failure, including 0 0 [8J 0
liquefaction?
iv) Landslides? 0 0 [8J 0
b) Result in substantial soil erosion or the loss of topsoil? 0 0 [8J 0
c) Be located on a geologic unit or soil that is unstable, 0 0 0 [8J
or that would become unstable as a result of the
project, and potentially result in on- or off-site
landslide, lateral spreading, subsidence, liquefaction,
or collapse?
d) Be located on expansive soil, as defined in Table 0 0 0 [8J
18-1-B of the Uniform Building Code (1994), creating
substantial risks to life or property?
e) Have soils incapable of adequately supporting the use 0 0 0 [8J
of septic tanks or alternative wastewater disposal
systems where sewers are not available for the
disposal of wastewater?
Comments:
Response to VIa. Development of the proposed project will not expose people or structures to potential
substantial adverse effects, including the risk of loss, injury, or death involving:
i) Active faults. The project area is not delineated on the Alquist-Priolo Earthquake Fault Zoning
Map issued by the State Geologist for the area. The Rose Canyon Fault, located approximately
16
East H Street
eight miles nOlihwest of the project area, is the closest known major active fault. According to
the City of Chula Vista General Plan, the City of Chula Vista's planning area (which includes
the project area) is also traversed by a total of five smaller faults, including two potentially
active faults, the Sweetwater and La Nacion; and three inferred faults, the Otay Valley Fault,
the Telegraph Canyon Fault, and the San Diego Bay-Tijuana Fault. There is no evidence of
active faults in the project area; therefore, faulting is not considered to be a hazard to this
roadway.
ii) Seismic ground shaking. The most significant credible seismic event at the project area is
estimated to be a 6.9 magnitude event on the Rose Canyon fault zone, For noncritical
structures such as the proposed roadway, the most significant probable seismic event would be
a magnitude 5.7 event on the Rose Canyon fault zone. Even under these conditions, a roadway
improvement project would not increase the potential exposure of people or structures to
substantial adverse seismic effects.
iii) Ground failure, including liquefaction. Types of soils in the project area include clays and
loams (V.S, Department of Agriculture 1973), These soil types have a low to moderate
potential for liquefaction. Therefore, the potential for liquefaction to occur in the vicinity of the
project site is considered less than significant.
iv) Landslides, Other than the manufactured slope located to the north of the project area, the
project site is relatively flat. The slope north of East H Street was constructed during the
Hidden Vista Village development to meet engineering standard specifications for stability,
The soils in the project area include clays and loams, There are no known landslides in the
project area. A minimal amount of grading is planned with the proposed project and the
potential for landslides is less than significant.
Response to VIb. The proposed project will not result in substantial soil erosion or the loss of topsoil in
areas that will not be permanently improved. The City requires, as standard conditions of construction, the
employment of erosion control measures during construction and the prompt stabilization of disturbed
areas before construction is completed. These standard measures would avoid significant soil erosion
impacts associated with the construction of the roadway improvements.
Although the following conditions are not required in order to mitigate significant project impacts, they
will be implemented in order to minimize project effects and to comply with applicable regulations:
1. Prior to the approval of the grading plan for the project, an erosion control plan shall be prepared
to the satisfaction of the City Engineer.
2. Prior to completion of final improvements, temporary erosion control shall be perfomed and
installed by the contractor as indicated below:
17
East H Street
a. The erosion control contractor shall be responsible for the inspection and modification of
the erosion control device during the rainy season. The contractor, permittee, or owner
shall be responsible for the continual maintenance of the erosion control devices during the
rainy season. In the event of failure or refusal to properly maintain said devices, the City
Engineer or Environmental Mitigation Monitor may cause emergency maintenance work
to be done to protect adjacent private and public property, the cost (including an initial
mobilization amount) of which shall be charged to the owner.
b. All removable protection devises shown shall be in place at the end of each working day
when the five-day rain probability forecast exceeds 40 percent. After each rainstonn
exceeding a quarter inch in a 12-hour period, silt and debris shall be removed from check
dams and desilting basins and basins shall be pumped dryas deemed necessary by the City
Engineer and Environmental Mitigation Monitor.
c. Effective planting shall be installed, fully germinated, and shall effectively cover the
required slopes prior to final approval. The planting mix shall be approved by the
Landscape Architecture Section of the Building and Park Construction Department prior to
installation. Sprinkler systems are required on all slopes over five feet in height.
d. Silt basins, traps, or sandbags shall be provided at every storm drain inlet to prevent
sediment from entering the stonn drain system.
e. The grading contractor shall be responsible for cleanup of silt and mud on adjacent streets
due to construction activity.
f. The contractor shall remove silt and debris after each rainfall exceeding quarter inch in a
12-hour period and when silt reaches a depth of 1.0 foot.
g. The contractor shall restore all erosion control devices to working order to the satisfaction
of the City Engineer and Environmental Mitigation Monitor after each rainfall which
produces runoff
h, The contractor shall install additional erosion control measures as may be required by the
City Engineer or Environmental Mitigation Monitor due to incomplete grading operations
or unforeseen circumstance which may arise.
1. The contractor shall take the necessary steps to protect the project and adjacent property
from any erosion and siltation that may result from grading operations by appropriate
means (sandbags, hay bales, temporary desilting basins, silt fences, dikes, shoring, etc.)
until such time that the total project is completed and accepted for maintenance by owner.
3, Prior to the preparation of improvement plans, a geotechnical study shall be prepared. The
applicable recommendations of the study shall be incorporated into the final design.
18
East H Street
Response to VIe. The proposed project area would not become unstable as a result of the implementation
of the proposed project.
Response to VId. According to the Soil Survey for San Diego (U.S. Department of Agriculture 1973),
the proposed roadway widening project is located in an area with soil types that have a low to moderate
expansive potential such as clays and loams. The project does not create a substantial risk to life or
prope11y.
Response to VIe. The proposed project will not affect the use of any septic tanks or alternative
wastewater disposal systems.
Geology and Soils Mitigation
No signiticant impacts have been identified and no mitigation is required.
19
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
VIL HAZARDS AND HAZARDOUS MATERIALS. Would the
project:
a) Create a significant hazard to the public or the D D rg¡ D
environment through the routine transport, use, or
disposal of hazardous materials?
b) Create a significant hazard to the public or the D D rg¡ D
environment through reasonably foreseeable upset
and accident conditions involving the release of
hazardous materials into the environment?
c) Emit hazardous emissions or handle hazardous or D D rg¡ D
acutely hazardous materials, substances, or waste
within one-quarter mile of an existing or proposed
school?
d) Be located on a site which is included on a list of D D D rg¡
hazardous materials sites compiled pursuant to
Government Code Section 65962.5 and, as a result,
would it create a significant hazard to the public or the
environment?
e) For a project located within an airport land use plan or, D D D rg¡
where such a plan has not been adopted, within two
miles of a public airport or public use airport, would the
project result in a safety hazard for people residing or
working in the project area?
f) For a project within the vicinity of a private airstrip, D D D rg¡
would the project result in a safety hazard for people
residing or working in the project area?
g) Impair implementation of or physically inter1ere with an D D D rg¡
adopted emergency response plan or emergency
evacuation plan?
h) Expose people or structures to a significant risk of D D D rg¡
loss, injury, or death involving wildland fires, including
where wildlands are adjacent to urbanized areas or
where residences are intermixed with wildlands?
Comments:
Response to VIla, No newly created or increased risk associated with the transport of hazardous
materials on East H Street would resuJt from implementation of the proposed roadway improvement
project A search of the County of San Diego's Hazardous Materials Establishment Listing indicated that
20
East H Street
no hazardous materials are known to be located in the vicinity of the project site (County of San Diego
2002), Operations in the project area will not involve the use or disposal of hazardous materials,
Operations along East H Street will comply with the Department of Transportation guidelines, rules, and
regulations with regards to the transport of hazardous materials and will result in a less than significant
impact. Construction equipment and materials are also not anticipated to create a significant hazard.
Response to VIlb. See response VIla above. The addition of a westbound travel lane leading to the I-80S
northbound on-ramp from East H Street will not create a significant hazard to the public or the
environment through reasonably foreseeable upset and accident conditions involving the release of
hazardous materials.
Response to VIle, The schools nearest the project area are Hilltop High School, Clear View Charter
Elementary School, and Halecrest Elementary School. Hilltop High School is located approximately one-
quarter mile to the west of the project area and the two elementary schools are located about one-half mile
from the project area. The proposed project is not expected to introduce any new hazardous emissions or
new handling of hazardous or acutely hazardous materials, substances, or waste to the area,
Response to VIld, See response to VIla, The proposed project is not located in an area that is included
on a list compiled pursuant to Government Code Section 65962.5 or that would create a significant hazard
to the public or the environment.
Response to VIle. The proposed project is not located within an adopted airport land use plan or within
two miles of a public airport or public use airport.
Response to VIlf, There is no private airstrip in the vicinity of the project site.
Response to VIlg, The proposed project will not physicaJly interfere with an adopted emergency
response plan or emergency evacuation plan. The provision of an additional. westbound lane for
approximately 1700 feet would improve traffic flow in the area, resulting in enhanced access for
emergency vehicles.
Response to VIlh. The proposed project site will not result in increased exposure of people or structures
to a significant risk of loss, injury, or death involving wildland fires.
Hazards and Hazardous Materials Mitigation
No significant impacts have been identified. Therefore, no mitigation is required.
21
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
VIII. HYDROLOGY AND WATER QUALITY. Would the
project:
a) Violate any water quality standards or waste discharge 0 0 [g] 0
requirements?
b) Substantially deplete groundwater supplies or interfere 0 0 0 [g]
substantially with groundwater recharge such that
there would be a net deficit in aquifer volume or a
lowering of the local groundwater table level (e.g" the
production rate of preexisting nearby wells would drop
to a level which would not support existing land uses
or planned uses for which permits have been
granted)?
c) Substantially alter the existing drainage pattern of the 0 0 [g] 0
site or area, including through the alteration of the
course of a stream or river, in a manner which would
result in substantial erosion or siltation on- or off-site?
d) Substantially alter the existing drainage pattern of the 0 0 [g] 0
site or area. including through the alteration of the
course of a stream or river, or substantially increase
the rate or amount of surface runoff in a manner,
which would result in flooding on- or off-site?
e) Create or contribute runoff water which would exceed 0 0 [g] 0
the capacity of existing or planned storm water
drainage systems or provide substantial additional
sources of polluted runoff?
f) Otherwise substantially degrade water quality? 0 0 [g] 0
g) Place housing within a 1 OO-year flood hazard area as 0 0 0 [g]
mapped on a federal Flood Hazard Boundary or Flood
Insurance Rate Map or other flood hazard delineation
map?
h) Place within a 100-year flood hazard area structures, 0 0 0 [g]
which would impede or redirect flood flows?
i) Expose people or structures to a significant risk of 0 0 0 [g]
loss, injury, or death involving flooding, including
flooding as a result of the failure of a levee or dam?
j) Inundation by seiche, tsunami, or mudflow? 0 0 0 [g]
22
East H Street
Comments:
Response to VIlla. Runoff flowing from impervious surfaces typically contains pollutants such as oils,
fuel residues, and heavy metals, which diminishes water quality in downstream bodies of water.
Approximately 20,000 square feet of new impervious surface will be added to East H Street as a result of
the proposed project Runoff associated with the improvement of East H Street will be controlled and is
subject to California Regional Water Quality Control Board, San Diego Region, Order No. 2001-01,
National Pollutant Discharge Elimination System (NPDES) Permit No. CASOI08758 (State of California
200 I). Project compliance with all federal, state, and local water quality standards and waste discharge
requirements must be demonstrated prior to project implementation.
Response to VIIlb. The proposed street improvement project will not use groundwater or substantially
interfere with groundwater recharge.
Response to VI lIe. The proposed project, including the addition of approximately 20,000 square feet of
impervious surface, will not alter the existing drainage pattern of the area in a manner which would result
in substantial erosion or siltation on- or off-site. Existing curb and gutter structures will be modified and
relocated to accommodate the proposed roadway improvements, but the overall drainage pattern will
remain the same.
Response to VlIId. The proposed improvements to East H Street will increase the amount of the
impermeable surfaces in the area by approximately 20,000 square feet. However, curb and gutter
structures have been incorporated into the design of the proposed project to control area runoff in a
manner which will not result in flooding on- or off-site. In addition, the City requires, as standard
conditions of construction, the employment of erosion control measures during construction and the
prompt stabilization of disturbed areas. These standard measures would avoid significant impacts,
Response to VIIle, The proposed project would affect the presently unpaved, but graded and landscaped
area along East H Street. Necessary drainage system improvements would be incorporated into the final
engineering design of the project. Although the following condition is not required in order to mitigate
significant project impacts, it will be implemented in order to minimize project effects and to comply with
applicable regulations:
Prior to the preparation of improvement plans, a drainage study shall be prepared; all applicable
recommendations of the study shall be incorporated into the final design.
Response to VIII£. For the management of storm water, municipalities in the San Diego region, including
the City of Chula Vista, must comply with NPDES Permit No, CASOI08758. The NPDES permit
consists of wastewater discharge requirements for storm water and urban runoff. Specifically,
construction and postconstruction Best Management Practices (BMPs) to prevent pollution of storm
drainage systems are required to be implemented as appropriate. BMPs appropriate to the characteristics
of a project may be employed to reduce pollutants available for transport or to reduce the amount of
pollutants in runoff prior to discharge to a surface water body. Although the following condition is not
23
East H Street
required in order to mitIgate significant project impacts, it will be implemented in order to minimize
project effects and to comply with applicable regulations:
Appropriate water quality BMPs shall be implemented during construction, in accordance with the
provisions of California Regional Water Quality Control Board, San Diego Region, Order No. 2001-01
(NPDES No. CASOI08758),
The project must comply with existing NPDES permit requirements. Compliance with eXlstmg
regulations would reduce impacts to a less than significant leveL Impacts associated with the
improvements to East H Street are, therefore, less than significant.
Response to VIIIg. The proposed project does not include the construction of housing or structural
buildings nor does it include the movement of any existing housing or structural buildings.
Response to VIIIh. Federal Emergency Management Act (FEMA) flood zone maps indicate a IOO-year
flood hazard area immediately west of the proposed project area and a 500-year flood hazard located just
south of the project area along East H Street. The project does not propose improvements or place
structures that would impede or redirect flood flows within either of these areas.
Response to VIlli. The proposed project is not located downstream from a dam and would not aid in or
result in the failure of a levee or dam.
Response to VIIIj. The distance between the project site and the coast precludes damage due to
seismically induced waves (tsunamis) or seiches. The lack of river tributaries or lakes in the project area
reduces the probability for earthquake-induced flooding to negligible.
Hydrology and Water Quality Mitigation
With adherence to the above-listed standard conditions, no significant impacts would occur. Therefore, no
mitigation is required.
24
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
IX, LAND USE AND PLANNING. Would the project:
a) Physically divide an established community? 0 0 0 IS!
b) Conflict with any applicable land use plan, policy, or 0 0 0 IS!
regulation or an agency with jurisdiction over the
project (including but not limited to the general plan,
specific plan, local coastal program, or zoning
ordinance) adopted for the purpose of avoiding or
mitigating an environmental effect?
c) Conflict with any applicable habitat conservation plan 0 0 0 IS!
or natural community conservation plan?
Comments:
Response to IXa. The proposed project will not divide an established community. The project consists
of the widening of an existing six-lane roadway with an additional westbound lane for approximately
1,700 feet or 0.3 mile,
Response to IXb. East H Street is classified as a six-lane Prime Arterial in both the Circulation Element
of the County of San Diego General Plan and the City of Chula Vista General Plan (City of Chula Vista
1989a). Widening a 1,700-foot segment of East H Street to accommodate a fourth, westbound lane is
consistent with the goals and objectives of these plans. The proposed project does not conflict with any
applicable land use plan, policy, or regulation or an agency with jurisdiction over the project.
Response to IXc, According to the City of Chula Vista Draft MSCP Subarea Plan, the proposed project
site is located in an area that is planned for development (City of Chula Vista 2000). The subject property
will, therefore, not conflict with any habitat conservation plan or natural community conservation plan.
Land Use and Planning Mitigation
No significant impacts have been identified. Therefore, no mitigation is required.
25
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE impact Incorporation Impact No Impact
X. MINERAL RESOURCES. Would the project:
a) Result in the loss of availability of a known mineral 0 0 0 IZI
resource that would be of value to the region and the
residents of the state?
b) Result in the loss of availability of a locally important 0 0 0 IZI
mineral resource recovery site delineated on a local
general plan, specific plan, or other land use plan?
Comments:
Response to Xa. The proposed project area does not contain significant mineral deposits and is not
located in either of the two aggregate resource sectors identified by the State Mining and Geology Board
as being of regional significance. Usable locally important mineral resources in the City of Chula Vista
are located within the Otay River valley and Sweetwater River valley (City of Chula Vista 1989b).
According to the California Department of Conservation, Division of Mines and Geology Generalized
Mineral Land Classification Map of San Diego County, the project area is not known to contain valuable
mineral resources and is not within Mineral Resource Zone 3 (MRZ-3) (California Department of
Conservation 1996).
Response to Xb. In the City of Chula Vista, the locally important mineral resources are found in the
Otay River Valley and Sweetwater River Valley, The project area is not located within these areas and is
not designated for mineral resource protection (City of Chula Vista 1989b). The proposed widening of
East H Street will have no impact on locally important mineral resources.
Mineral Resources Mitigation
No significant impacts have been identified. Therefore, no mitigation is required.
26
East H Stred
less Than
Significant
Potentially with less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XL NOISE. Would the project result in:
a) Exposure of persons to or generation of noise levels in 0 0 [g 0
excess of standards established in the local general
plan or noise ordinance, or applicable standards of
other agencies?
b) Exposure of persons to or generation of excessive 0 0 0 [g
ground borne vibration or ground borne noise levels?
c) A substantial permanent increase in ambient noise 0 0 0 [g
levels in the project vicinity above levels existing
without the project?
d) A substantial temporary or periodic increase in 0 0 [g 0
ambient noise levels in the project vicinity above levels
existing without the project?
e) For a project located within an airport land use plan or, 0 0 0 [g
where such a plan has not been adopted, within two
miles of a public airport or public use airport, would the
project expose people residing or working in the
project area to excessive noise levels?
f) For a project within the vicinity of a private airstrip, 0 0 0 [g
would the project expose people residing or working in
the project area to excessive noise levels?
Comments: An acoustical study was prepared by RECON in May 2002 to analyze existing and future
noise levels along the project portion of East H Street (Appendix D). Under CEQA, the City of Chula
Vista considers a noise impact to be significant if it would result in exterior noise levels at residential
properties that exceed 65 dB CNEL.
For comparing the change in ambient noise levels along roadways that would have traffic increases due to
implementation of the proposed project, a change in exterior noise levels of 3 dB is considered
perceptible; changes of less than 3 decibels, in general, are not noticeable in the outdoor environment
(Bolt et al. 1973: 1-20; Beranek 1988:598-599). Therefore, if the increase in traffic-generated noise along
a roadway segment is less than 3 decibels, it is not considered a significant impact.
Response to Xla. Daily Operations,' Based on the results of the acoustical report, the measurements taken
at 50 feet and 120 feet north of the centerline of East H Street produced noise level readings of 74.0 A-
weighted decibels [dB(A)J and 68.7 dB(A), respectively (RECON Environmental 2002d). After an
adjustment for current average daily traffic (ADT), as provided in the Linscott, Law & Greenspan traffic
27
East H Street
report, these readings convert to 75.4 CNEL and 70.1 CNEL, where CNEL is the community noise
equivalent leveL At both distances from the roadway, the current noise levels, which include the noise
produced by traffic on East H Street as well as I-80S, exceed the accepted standard of 65 CNEL.
The proposed East H Street roadway improvements have the potential to affect noise in two ways. The
project will result in an improvement in the flow of the traffic, manifesting in slightly higher average
speeds. As traffic speed increases, noise will increase, The project will also result in the effective noise
source being moved to the north as a result of the addition of the new lane. The addition of the lane will
move the effective noise source closer to the homes on the north side of the roadway. The traffic volume
on the roadway is not expected to change as a result of the proposed project. The noise analysis
considered the effect of the anticipated change in average speed and the result of the additional lane,
According to the traffic study prepared by LLG for the project, dated May 14, 2002, the average travel
speed on East H Street between Hidden Vista Drive and I-80S southbound ramps is currently 28.8 miles
per hour (mph). The average travel speed on this street segment upon completion of the proposed
improvements is calculated to be 29.0 mph (LLG 2002). According to the traffic study, the traffic volume
on East H Street between I-80S and Hidden Vista Drive of 67,300 ADT will remain the same with or
without the proposed roadway improvements (LLG 2002).
The 0.2-mph increase in the average travel speed described above will result in an incremental increase in
the noise levels near the roadway. The algorithms of the Federal Highway Administration's Noise
Prediction Model (FHW A 1979) were used to quantify this incremental noise increase. The average travel
speeds of 28.8 and 29.0 mph were used and 67,300 ADT was held constant. The increased average travel
speeds resulting from the proposed improvements will lead to a predicted 0,18-decibel increase in the
noise levels.
A second calculation was perfonned to examine the change in the noise environment as a result of the
closer proximity of the proposed additional travel lane to the residential development located to the north
of East H Street. The effective noise source for the roadway is defined as the equivalent lane distance.
This is the geometric mean of the near lane distance to the far lane distance, as detailed in the FHW A
Noise Prediction ModeL The result of the addition of the traffic lane and the distribution of the traffic
over seven lanes, rather than the existing six lanes, results in a projected increase in the noise at the
nearest home of 0.21 decibels, The combined effect of increasing the average travel speed and moving the
traffic by adding a lane is 0.39, or 0.4 of a decibeL This is well below the threshold of perception.
Although traffic noise levels along the project segment of East H Street currently exceed the established
noise standard, and are projected to continue to exceed this standard, according to the acoustical study
there will be no noticeable change in the noise level as a result of implementation of the project.
Therefore, the proposed project will not result in a significant noise impact.
Construction: The proposed project will result in increased noise levels due to the use of construction
equipment. Noise generated during construction can range between 80 and 90 dB(A) at 50 feet from the
28
East H Street
source, Although the following conditions are not required in order to mitigate significant project impacts,
they will be implemented in order to minimize project effects and to comply with applicable regulations:
L Each internal combustion engine utilized during construction shall be equipped with a muffler of a
type recommended by the manufacturer.
2. Pursuant to Chula Vista Municipal Code Section 17.24.050 (paragraph J), construction is not
permitted in residential zones Monday through Fridays between 10:00 P.M. and 7:00 A.M. and on
Saturdays and Sundays between 10:00 P.M, and 8:00 A.M. For certain work that does not generate
substantial noise levels in any residential zone, the contractor may be authorized to perform such
work during these restricted periods, at the discretion of the City Engineer.
Response to XIb. The project proposes roadway improvements along East H Street that include the
widening of the roadway for approximately 1700 feet from its current three lane westbound configuration,
creating a fourth westbound lane leading to the I-80S northbound on-ramp. These improvements are not
expected to generate permanent excessive ground-borne vibration or ground-borne noise levels in the
project area.
Response to XIc. See response to XIa. The proposed roadway improvement project would not cause a
significant noise increase in the area, As described in the acoustical study, the 0.2-mph increase in
average travel speed and the closer proximity of the new traffic lane will result in a total noise increase of
less than 0.5 decibels. This incremental increase in the noise level is not noticeable and, therefore, would
not result in a significant noise impact
Response to XId. See response to XIa. Equipment used during the construction phase of the proposed
project could generate adverse noise impacts. The following conditions, which are not required in order to
mitigate significant project impacts, will be implemented in order to minimize project effects and to
comply with applicable regulations:
L Each internal combustion engine utilized during construction shall be equipped with a muffler of a
type recommended by the manufacturer.
2, Pursuant to Chula Vista Municipal Code Section 17.24.050 (paragraph J), construction is not
permitted in residential zones Monday through Fridays between 10:00 P.M. and 7:00 A,M. and on
Saturdays and Sundays between 10:00 P.M. 8:00 A.M. For certain work that does not generate
substantial noise levels in any residential zone, the contractor may be authorized to perform such
work duting these restricted periods, at the discretion of the City Engineer.
Response to XIe and f. The proposed project is not located in the vicinity of an airport or private
airstrip,
29
East H Street
Noise Mitigation
No significant impacts have been identified; therefore, no mitigation is required.
30
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XII. POPULATION & HOUSING. Would the project:
a) Induce substantial population growth in an area either 0 0 0 ¡g
directly (e.g" by proposing new homes and
businesses) or indirectly (e,g" through extension of
roads or other infrastructure)?
b) Displace substantial numbers of existing housing, 0 0 0 ¡g
necessitating the construction of replacement housing
elsewhere?
c) Displace substantial numbers of people, necessitating 0 0 0 ¡g
the construction of replacement housing elsewhere?
Comments:
Response to XlIa, The proposed roadway improvement project is located near the urban core of the City
of Chula Vista and would not induce growth, East H Street is classified as a Six-Lane Prime Arterial
from 1-805 to Otay Lakes Road. The proposed improvements to East H Street, which include an
additional westbound lane for approximately 1700 feet, will allow for more efficient traffic flow in the
project and surrounding areas. Since East H Street is a designated Prime Arterial on both the Circulation
Element of the County of San Diego General Plan and the City of Chula Vista General Plan, the proposed
project represents no change to any adopted land uses or regulations for the project site. It will, therefore,
neither directly nor indirectly induce population growth.
Response to XlIb. The proposed project will not displace any existing housing or necessitate the
construction of additional housing.
Response to XlIc, See response to XlIb.
Population and Housing Mitigation
No significant impacts have been identified; therefore, no mitigation is required,
31
East H Strel:t
Less Than
Significant
Potentially with Less Than
ISSUE Significant Mitigation Significant
Impact Incorporation Impact No Impact
XIIL PUBLIC SERVICES. Would the project result in
substantial adverse physical impacts associated with the
provision of new or physically altered governmental
facilities or the need for new or physically altered
governmental facilities, the construction of which could
cause significant environmental impacts, in order to
maintain acceptable service ratios, response times, or
other performance objectives for any of the public
services:
a) Fire protection? 0 0 0 IS!
b) Police protection? 0 0 0 IS!
c) Schools? 0 0 0 IS!
d) Parks? 0 0 0 IS!
e) Other public facilities? 0 0 0 IS!
Comments:
Response to XIIla. The proposed roadway-widening project will not adversely impact fire protection
services. Anticipated proposed project-related benefits such as improved roadway speeds, decreased
traffic congestion, and a wider travel way may benefit the perfonnance objectives for fire protection
services.
Response to XlIIb. The proposed roadway-widening project will not adversely impact police protection
servi ces. Anticipated proposed project-related benefits such as improved roadway speeds, decreased
traffic congestion, and a wider travel way may benefit the perfonnance objectives for police protection
services.
Response to XIlIc, The proposed roadway-widening project will not result in a need for any new or
altered schools or school services,
Response to XlIId. The proposed roadway-widening project will not result in a need for any new or
altered parks or park services,
Response to XIlIe. The proposed roadway-widening project will not result in a need for any other new
or altered public facilities or governmental services.
32
East H Slreet
Public Services Mitigation
No significant impacts have been identified; therefore, no mitigation is required,
33
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XIV. RECREATION.
a) Would the project increase the use of existing 0 0 0 ø
neighborhood and regional parks or other recreational
facilities such that substantial physical deterioration of
the facility would occur or be accelerated?
b) Does the project include recreational facilities or 0 0 0 ø
require the construction or expansion of recreational
facilities which might have an adverse physical effect
on the environment?
Comments:
Response to XIV a, The proposed project will not result in additional residential development and
corresponding population. Therefore, it will not increase the demand for neighborhood or regional parks
or other recreational facilities and would not cause substantial deterioration of existing facilities.
Response to XIVb, The proposed project does not include any recreational facilities and does not require
the construction or expansion of recreational facilities that might have an adverse physical effect on the
environment.
Recreational Mitigation
No significant impacts have been identified; therefore, no mitigation is required.
34
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XV. TRANSPORTATIONITRAFFIC. Would the project:
a) Cause an increase in traffic, which is substantial in 0 0 0 rsI
relation to the existing traffic load and capacity of the
street system (Le., result in a substantial increase in
either the number of vehicle trips, the volume to
capacity ratio on roads, or congestion at
intersections)?
b) Exceed, either individually or cumulatively, a level of 0 0 0 rsI
service standard established by the county congestion
management agency for designated roads or
highways?
c) Result in a change in air traffic patterns, including 0 0 0 rsI
either an increase in traffic levels or a change in
location that results in substantial safety risks?
d) Substantially increase hazards due to a design feature 0 0 0 rsI
(e.g" sharp curves or dangerous intersections) or
incompatible uses (e,g., farm equipment)?
e) Result in inadequate emergency access? 0 0 0 rsI
f) Result in inadequate parking capacity? 0 0 0 rsI
g) Conflict with adopted policies, plans, or programs 0 0 rsI 0
supporting alternative transportation (e,g., bus
turnouts, bicycle racks)?
Comments:
A traffic study addressing the East H Street Widening was prepared by Linscott, Law & Greenspan on
May 14, 2002 (Appendix E). The analysis contained in the report includes peak-hour intersection and
daily street segment operations for the existing and buildout time frames, with and without the project.
The report analyzes the East H Street/Interstate 805 northbound and southbound ramp intersections, the
East H Street/Hidden Vista Drive intersection, and the segments of East H Street from I-80S to Hidden
Vista Drive and east of Hidden Vista Drive. The measure of effectiveness used in the analysis for both
intersection and street segment operations is level of service.
The results from the traffic analysis indicate that the proposed project will improve both the operations of
the intersections and street segments located within and in the vicinity of the proposed project area (LLG
2002), Specifically, with the existing traffic volumes, the segment of East H Street between Interstate 805
35
East H Street
and Hidden Vista Drive is calculated to improve from the current LOS with the implementation of the
project (LLG 2002). Delays at the intersections within the project area are also calculated to decrease. In
addition, the analysis also shows that, at buildout, the East H Street improvements will improve the LOS
of the segment of East H Street from I-80S to Hidden Vista Drive and decrease delay at project area
intersections (LLG 2002),
Response to XVa. The proposed East H Street improvement project will increase the roadway capacity
to better accommodate existing traffic volumes and to accommodate projected future increases in traffic
volumes. The project is intended to reduce traffic congestion and will not cause an increase in traffic
volumes on East H Street. According to the traffic analysis, the LOS on East H Street between I-80S and
Hidden Vista Drive will improve as a result of the proposed addition of a westbound lane to East H Street
(LLG 2002). The analysis also states that the LOS on East H Street between I-80S and Hidden Vista
Drive will improve at buildout as a result of the project (LLG 2002). Delay at project-area intersections is
also calculated to decrease as a result of the project.
Response to XVb, The East H Street improvement project will not exceed, either individually or
cumulatively, an established level of service standard. According to the traffic analysis, under existing
traffic conditions, the implementation of the proposed improvements will improve the LOS on the
segment of East H Street located between I-80S and Hidden Vista Drive (LLG 2002). The average delays
at the East H Street/I-80S northbound ramp and East H StreetfHidden Vista Drive intersections are also
calculated to decrease during the A.M. and P.M, peak hours as a result of the proposed project. Similar
improvements are projected at buildout, with the completion of the project.
Response to XV c. The proposed project is not located in or near an air traffic corridor and will not result
in a change in air traffic patterns or location,
Response to XV d. The proposed project has no hazardous design features. The preliminary engineering
design for the roadway improvements have been completed to the standard specifications. In order to
accommodate the additional westbound lane, Hidden Vista Drive would need to be reconstructed between
East H Street and a point approximately 105 feet north of the existing edge of East H Street. The
reconstruction of this street segment would be required in order to meet the vertical curve design
standards of the City's Subdivision Manual at the Hidden Vista Drive approach to the East H Street
intersection.
Prior to the commencement of construction, a traffic control plan shall be prepared to the satisfaction of
the City Engineer; this plan shall be implemented during construction. When possible, construction would
take place during off-peak hours to minimize traffic impacts.
Response to XVe. The traffic improvements to East H Street will not adversely affect emergency access
and, by relieving congestion, may improve emergency access.
Response to XVf, Parking is currently prohibited along the project area. The proposed project will not
provide parking and will not have an effect on parking capacity.
36
East H Street
Response to XVg. Included in the proposed project is the relocation of a westbound bus stop currently
located just east of the East H StreetlHidden Vista Drive intersection to a location on the west side of the
intersection. Bus service will be maintained during project construction. East H Street is also being
evaluated as a main con'idor under the Transit First Study currently being conducted by the Metropolitan
Transit Development Board (MTDB). The City of Chula Vista has preliminary on-going discussions with
MTDB about future opportunities for additional transit service along East H Street The proposed
improvements along East H Street would not preclude future implementation of such measures. Neither
this nor any other components of the proposed project will conflict with any adopted policies, plans, or
programs supporting alternative transportation.
Transportation Mitigation
No significant impacts have been identified; therefore, no mitigation is required.
37
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XVI. UTILITIES & SERVICE SYSTEMS. Would the project:
a) Exceed wastewater treatment requirements of the 0 0 0 [g]
applicable Regional Water Quality Control Board?
b) Require or result in the construction of new water or 0 0 0 [g]
wastewater treatment facilities or expansion of existing
facilities, the construction of which could cause
significant environmental effects?
c) Require or result in the construction of new storm 0 0 [g] 0
water drainage facilities or expansion of existing
facilities, the construction of which could cause
significant environmental effects?
d) Have sufficient water supplies available to serve the 0 0 0 [g]
project from existing entitlements and resources, or
are new or expanded entitlements needed?
e) Result in a determination by the wastewater treatment 0 0 0 [g]
provider which serves or may serve the project that it
has adequate capacity to serve the project's projected
demand in addition to the provider's existing
commitments?
f) Be served by a landfill with sufficient permitted 0 0 0 [g]
capacity to accommodate the project's solid waste
disposal needs?
g) Comply with federal, state, and local statutes and 0 0 0 [g]
regulations related to solid waste?
Comments:
Response to XVla. The proposed roadway improvement project will not affect wastewater treatment
requirements.
Response to XVlb. The proposed project will not affect water or wastewater treatment facilities.
Response to XVlc. An additional 12-foot wide westbound lane for approximately 1700 feet on East H
Street will slightly increase the amount of impervious surface area by approximately 20,000 square feet
over that which currently exists. As a result, the proposed project will also result in a slight increase in
the runoff rate generated at the site. The storm water drainage facilities for the proposed project will
continue to be located in the street system. Impacts related to the construction of storm drainage facilities
38
East H Street
are expected to be less than significant because runoff generation rates would increase only slightly. It is
anticipated that the drainage facilities will simply be relocated to accommodate the additional travel lane.
Response to XVId. The proposed roadway improvement project will have no impact on the availability
of adequate water supplies, No new or expanded water supply related entitlements would be needed.
Response to XVIe. The proposed project will not alter wastewater treatment demands or capacity.
Response to XVIf. Solid wastes produced during the construction phase of the proposed project will be
trucked to the Otay Landfill, which is estimated to have capacity to receive solid wastes for the next 25
years. Additionally, waste disposal needs will be minimized by incorporation of recycling and waste
reduction measures identified in the City's Source Reduction and Recycling Element of the County's
Integrated Waste Management Plan (County of San Diego 1996). Upon project completion, there will be
no solid waste produced and, therefore, no solid waste disposal needs.
Response to XVIg. See response to XVIf
Utilities and Service Systems Mitigation
No significant impacts have been identified; therefore, no mitigation is required.
39
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XVIL THRESHOLD ANALYSIS. Will the proposal adversely
impact the City's Threshold Standards?
As described below, the proposed project does not result in significant impacts to any of the threshold
standards.
a) Exceed the City's fire/EMS Threshold Standards? 0 0 0 [8]
The threshold standards requires that fire and medical units must be able to respond to calls within 7
minutes or less in 85 percent of the cases and within 5 minutes or less in 75 percent of the cases,
Response to XVlla. The proposed roadway improvement project will not generate an increased need for
fire/emergency medical services (EMS) and it will, therefore, not adversely impact the City of Chula
Vista's threshold standards for fire/EMS. See response XIIIa,
Mitigation, No significant impacts have been identified; therefore, no mitigation is required.
b) Exceed the City's police Threshold Standards? 0 0 0 [8]
The threshold standards require that police units must respond to 84 percent of Priority I calls within 7
minutes or less and maintain an average response time to all Priority I calls of 4.5 minutes or less. Police
units must respond to 62,10 percent of Priority 2 calls within 7 minutes or less and maintain an average
response time to all Priority 2 calls of 7 minutes or less. The proposed project would comply with this
threshold standard.
Response to XVllb. The proposed roadway improvement project will not generate an increased need for
police services and it will, therefore, not adversely impact the City of Chula Vista's threshold standards
for police services. See response XlIIb.
Mitigation. No significant impacts have been identified; therefore, no mitigation is required.
c) Exceed the City's traffic Threshold Standards? 0 0 0 [8]
Maintain LOS "C" or better as measured by observed average travel speed on all signalized arterial
segments except that during peak hours a LOS D can occur for no more than any two hours of the day.
Response to XVllc. The objective of the proposed project is to increase roadway capacity and reduce
traftìc congestion on westbound East H Street in accordance with the City's Growth Management
Ordinance threshold standards for traffic congestion.
40
East H Street
According to the traffic analysis prepared by Linscott, Law, & Greenspan, dated May 14,2002, the GMO
segment of East H Street east of 1-805 is cUlTently operating at an acceptable level of service, The
proposed additional lane is anticipated to improve the LOS on this segment of East H Street The traffic
analysis also indicates that the proposed project is anticipated to decrease delay at two of the three
intersections within the project area during the AM and PM peak hours, although LOS would remain the
same (LLG 2002).
Mitigation. No significant impacts have been identified; therefore, no mitigation is required.
41
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
d) Exceed the City's parks/recreation Threshold 0 0 0 ~
Standards? The threshold standard for Parks and Recreation is 3 acres of neighborhood and community parkland with
appropriate facilities per 1,000 residents east of Interstate 80S.
Response to XVlId. The City's threshold standard for parks does not apply to this project. Because the
proposed project does not generate population, it will not adversely impact City of Chula Vista threshold
standard for parks and recreation.
Mitigation, No significant impacts have been identified; therefore, no mitigation is required.
e) Exceed the City's drainage Threshold Standards? 0 0 IZI 0
The threshold standards require that stonn water flows and volumes not exceed City Engineering
Standards. Individual projects will provide necessary improvements consistent with the Drainage Master
Plan(s) and City Engineering Standards. The proposed project would comply with this threshold standard,
Response to XVlIe. The City's threshold standards require that stonn water flows and volumes not
exceed City engineering standards. Individual projects must provide necessary improvements consistent
with the drainage master plan(s) and City engineering standards. The proposed project will meet City
standards. The City of Chula Vista requires that runoff from developed sites be maintained at levels at or
below natural conditions for the 10-, 50-, and 100-year frequency stonns. The project will not result in
any significant changes to drainage patterns or storm water flows or volumes that exceed established City
threshold standards.
Mitigation. No significant impacts have been identified; therefore, no mitigation is required.
f) Exceed the City's sewer Threshold Standards? 0 0 0 IZI
The threshold standards require that sewage flows and volumes not exceed City Engineering Standards.
Individual projects will provide necessary improvements consistent with Sewer Master Plan(s) and City
Engineering Standards. The proposed project would comply with this threshold standard.
Response to XVIIC, The proposed roadway improvement project will not affect the existing sewage
treatment demand and. therefore. will not adversely impact the City of Chula Vista's sewer threshold
standards.
Mitigation, No significant impacts have been identified; therefore, no mitigation is required.
42
East H Street
Less Than
Significant
Potentiany with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
g) Exceed the City's water Threshold Standards? 0 0 0 ~
The threshold standards require that adequate storage, treatment, and transmission facilities be constructed
concurrently with planned growth and that water quality standards are not jeopardized during growth and
construction. The proposed project would comply with this threshold standard.
Response to XVIIg. The proposed roadway improvement project will not affect the existing water
demand and, therefore, will not adversely impact the City of Chula Vista's water threshold standards.
Mitigation. No significant impacts have been identified; therefore, no mitigation is required.
h) Exceed the City's air quality Threshold Standards? 0 0 ~ 0
The threshold standards require that the Growth Management Oversight Commission (GMOC) shall be
provided with an annual report which:
. Provides an overview and evaluation of local development projects approved during the prior year
to determine to what extent they implement measures designed to foster air quality improvement
pursuant to relevant regional and local air quality improvement strategies.
. Identifies whether the City's development regulations, policies, and procedures relate to and are
consistent with current applicable federal, state, and regional air quality regulations and programs.
Identifies non-development specific activities being undertaken by the City toward compliance with
relevant federal, state, and local regulations regarding air quality and whether the City has achieved
compliance.
Response to XVIIh. The proposed project is not growth inducing and has been designed to provide
reduced traffic congestion along portions of East H Street as well as on the surrounding street system. As
described in the air quality report for the proposed project, a screening-level CO hot spot analysis was
performed, The results of the analysis indicate that no violations of either the I-hour or the 8-hour average
CO concentrations are anticipated at either of the intersections within the project area (RECON
Environmental 2002b). The best management practices, as described in the air quality report, shall be
utilized during construction in order to ensure that construction-related air quality impacts are kept below
a level of significance. No significant operational or construction air quality impacts are expected to result
from the East H Street improvements project. The proposed project is consistent with the goals and
objectives of the RAQS and satisfies the threshold standard for air quality,
Mitigation. No significant impacts have been identified; therefore, no mitigation is required.
43
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
i) Exceed the City's economics Threshold Standards? 0 0 0 ~
The threshold standards require that:
. The GMOC shall be provided with an annual fiscal impact report that provides an evaluation of
the impacts of growth on the City, both in terms of operation and capital improvements. This
report should evaluate actual growth over the previous 12-month period, as well as projected
growth over the next 12- to 18-month period, and 5- to 7 -year period.
. The GMOC shall be provided with an annual 'development impact fee report,' which provides an
analysis of development impact fees collected and expended over the previous 12-month-period.
Response to XVIIi. The proposed roadway improvement project will have no adverse impact on the City
of Chula Vista' s economics nor will it result in an exceedance of the City's economic threshold standards.
Mitigation, No significant impacts have been identified; therefore, no mitigation is required.
j) Exceed the City's schools Threshold Standards? 0 0 0 ¡;g¡
The threshold standard for schools requires that the City shall annually provide the two local school
districts with a 12- to 18-month development forecast and request an evaluation of their ability to
accommodate the forecasted and continuing growth. The Districts' replies should address the following:
· Amount of current capacity now used or committed.
· Ability to absorb forecasted growth in affected facilities.
· Evaluation of funding and site availability for projected new facilities.
· Other relevant information the District(s) desire(s) to communicate to the City and GMOC
The growth forecast and school district response letters shall be provided to the GMOC for inclusion in its
review,
Response to XVIIj, The proposed roadway improvement project will have no adverse impact on the City
of Chula Vista's schools nor will it result in an exceedance ofthe City's schools threshold standards.
Mitigation, No significant impacts have been identified; therefore, no mitigation is required.
44
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
k) Exceed the City's libraries Threshold Standards? 0 0 0 ~
The threshold standard for libraries in Chula Vista is based on a population ratio, which requires that 500
square feet (gross) of adequately equipped and staffed libraries be provided per 1,000 population.
Response to XVIIk. The proposed roadway improvement project will have no adverse impact on the City
of Chula Vista' s libraries nor will it result in an exceedance of the City's libraries threshold standards.
Mitigation. No significant impacts have been identified; therefore, no mitigation is required.
45
East H Street
Less Than
Significant
Potentially with Less Than
Significant Mitigation Significant
ISSUE Impact Incorporation Impact No Impact
XVIII. MANDATORY FINDINGS OF SIGNIFICANCE.
a) Does the project have the potential to degrade the D D ~ D
quality of the environment, substantially reduce the
habitat of a fish or wildlife species, cause a fish or
wildlife population to drop below self-sustaining levels,
threaten to eliminate a plant or animal community,
reduce the number or restrict the range of a rare or
endangered plant or animal or eliminate important
examples of the major periods of California history or
prehistory?
b) Does the project have the impacts that are individually D D ~ D
limited, but cumulatively considerable? ("Cumulatively
considerable" means that the incremental effects of a
project are considerable when viewed in connection
with the effects of past projects, the effects of other
current projects, and the effects of probable future
projects. )
c) Does the project have environmental effects, which D D D ~
will cause substantial adverse effects on human
beings, either directly or indirectly?
Response to XVIIla. The project will not substantially reduce the amount of biological habitat or
threaten any biological community, including rare or endangered plants and animals. Potential impacts to
raptors would not substantially reduce the amount of raptor habitat in the vicinity of the project area. The
removal of predominantly ornamental, non-native vegetation, including a small quantity of sycamore and
eucalyptus trees, will result in a less than significant impact to the biological community.
The proposed improvements to East H Street will not degrade the quality of the environment. The project
will not eliminate important examples of major periods of California history or prehistory.
Response to XVlIIb, The proposed project is located in an urbanized, development area. The proposed
addition of a fourth westbound travel lane for approximately 1,700 feet on East H Street is consistent with
the goals and objectives of all applicable environmental and planning regulations. The cumulatively
considerable impacts of the East H Street Improvements Project are, therefore, less than significant.
46
East H Street
Response to XVIlIc, See Comments/Responses for Issue VII (Hazards and Hazardous Materials). The
proposed project does not have environmental effects which will cause substantial adverse, direct, or
indirect effects on human beings.
XIX. PROJECT REVISIONS OR MITIGATION MEASURES
Air Quality
There is the potential for significant, short-term air quality impacts to occur during the construction of the
proposed roadway improvements, The following mitigation measures would reduce these impacts to
below a level of significance.
Mitigation Measures:
l. Dust reducing measures shall include regular watering of graded surfaces and restriction of all
construction vehicles and equipment to travel along established and regularly watered roadways at
specified speeds.
2. During construction, stockpiled materials that can potentially become airborne shall be covered or
periodically watered,
3. During construction, dirt and debris shall be washed down or swept up as soon as practicable to
reduce the resuspension of particulate matter caused by vehicle movement over such material.
Approach routes to the construction area shall be cleaned daily of construction-related dirt and
debris.
4. In accordance with California Vehicle Code Section 23114, vehicles transporting loads of
aggregate materials must cover/tarp the material, or if not covered, the material must be no nearer
than six inches from the upper edge of the container area where the material contacts the sides,
front, and back of the cargo container area, and the load shall not extend, at its peak, above any
part of the upper edge of the cargo container area.
5. Construction equipment shall be maintained in proper working order and shall be periodically
tuned in order to minimize air pollutant emissions; use of low pollutant-emitting construction
equipment, including electrical-powered equipment, shall be used as practical.
6. Soil disturbance and travel on unpaved surfaces shall be suspended when wind speeds exceed 25
miles per hour.
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East H Street
BiologV
Several large trees including eucalyptus and sycamore trees are located within the project area, within the
landscaped area nOlih of East H Street. At least two sycamore and two eucalyptus trees would likely need
to be removed in order to accommodate the additional lane and retaining walls proposed with the project.
Sycamore and eucalyptus trees may provide a nesting habitat for raptors, including Cooper's hawk. All
active raptor nests are protected under the California Department of Fish and Game Code Section 3503.5.
The loss of an active raptor nest by removal associated with project construction would be considered a
significant impact requiring mitigation.
Vegetation including primarily Diegan coastal sage scrub exists as close as 100 feet from the western
boundary of the project site. This vegetation provides potential habitat for the coastal California
gnatcatcheL
Mitigation Measures:
L Prior to the removal or alteration of any mature trees or the commencement of construction
activities during the raptor nesting season, identified as December I through May 31 in the Draft
Chula Vista MSCP Subarea Plan, a qualified biologist shall conduct a pre-construction survey of
such trees as well as those within the construction impact area established by the biologist. In the
event that a nest(s) is found during the survey, appropriate construction setbacks deemed
appropriate by a qualified biologist to protect young birds until they are no longer dependent upon
the nest shall be established. No restrictions with respect to tree removal or construction setbacks
shall apply outside the raptor nesting season.
2, Prior to the approval of any improvement plans or the issuance of any grading penn it, the
Environmental Review Coordinator shall ensure that the plans and specifications include a note
regarding the survey requirements and construction restrictions during the raptor nesting season as
outlined in measure # I.
3. During the gnatcatcher breeding season, between February 15 and August 15, noise levels
generated by project-related construction activities shall not exceed 60 dB CNEL within any area
containing an occupied nest or, if no occupied nest exists, within the area occupied by a potential
breeding pair in order to prevent construction noise from negatively impacting breeding success.
Where the ambient noise level is greater than 60 dB CNEL, the ambient noise level shall not be
exceeded as a result of project-related construction. If an occupied nest or potential breeding pair
is identified during a pre-construction survey, noise mitigation techniques, such as temporary
noise walls or belms or modifications to construction activities, deemed necessary to attenuate
construction noise levels within affected areas to 60 dB CNEL or less shall be formulated by a
qualified biologist and qualified acoustician and shall be implemented during the breeding season.
The qualified acoustician shall monitor the success of any noise attenuation measures that are
implemented; where a violation of the noise level limit is identified, the acoustician shall
48
East H Street
immediately notify the Environmental Review Coordinator so that construction activities can be
halted or reduced to avoid further exceedances of the limit until sufficient alternate or modified
noise attenuation measures, if any, can be implemented,
4. Prior to the approval of any improvement plans or the issuance of any grading or building pern1it,
the Environmental Review Coordinator shall ensure that the plans and specifications include a
note regarding the construction noise restrictions during the coastal California gnatcatcher
breeding season as outlined in measure #3.
Paleontology
There is a high paleontological resource sensitivity in the Terra Nova area, near the proposed East H
Street Widening project The disturbance of paleontological resources during project construction would
be considered a significant impact requiring mitigation. Therefore, paleontological monitoring within
undisturbed rock units shall be required, This does not, however, apply to fill areas.
Mitigation Measure:
I. Prior to the issuance of any grading permit, the applicant shall confirm to the City of Chula Vista
Environmental Review Coordinator (ERC) that a qualified paleontologist has been retained to
carry out the following mitigation program. A qualified paleontologist is defined as an individual
with an M.S. or Ph.D. in paleontology or geology who is familiar with paleontological procedures
and techniques. The following mitigation program shall be implemented to the satisfaction of the
ERC:
a. The paleontologist shall attend applicable preconstruction meetings to consult with grading
and excavation contractors.
b. A paleontological monitor shall be on-site at all times during the original cutting of
previously undisturbed geologic fonnational material to inspect cuts for fossils (A
paleontological monitor is defined as an individual who has experience in the collection
and salvage of fossil materials.). The paleontological monitor shall work under the
direction of a qualified paleontologist
c. If fossils are discovered, the paleontologist (or paleontological monitor) shall oversee the
recovery of such resources. In instances where recovery requires an extended salvage
period, the paleontologist (or paleontological monitor) shall be allowed to temporarily
direct, divert, or halt grading to allow for the recovery of fossils in a timely manner.
Where deemed appropriate by the paleontologist (or paleontological monitor), a screen-
washing operation for small fossil remains shall be set up.
d, Prepared fossils, along with copies of all pertinent field notes, photographs, and maps,
shall be deposited (with the applicant's pennission) in a scientific institution with
paleontological collections such as the San Diego Natural History Museum. A final
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East H Street
summary report shall be completed which outlines the results of the mitigation program.
This report shall include discussion of the methods used, stratigraphy exposed, fossils
collected, and significance of recovered fossils.
50
East H Street
XX. AGREEMENT TO IMPLEMENT MITIGATION MEASURES
By signing the line provided below, the Applicant(s) and/or Operator(s) stipulate that they have each
read, understood, and have their respective company's authority to and do agree to the mitigation
measures contained herein and will implement same to the satisfaction of the Environmental Review
Coordinator, Failure to sign the line provided below prior to posting of this Mitigated Negative
Declaration with the County Clerk shall indicate the Applicant's and/or Operator's desire that the Project
be held in abeyance without approval and that the Applicant(s) and/or Operator(s) shall apply for an
Environmental Impact Report.
~~1£jdl~)L¡¿~) k/¿J/~ 'Z
Sig!e ~re Date <
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{-I", /../ . -)'/';""11" I:::.é:.}
Printed Name and Title / -
Ag nt For
XXI. ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED
The environmental factors checked below would be potentially affected by this Project, involving at least
one impact that is a "Potentially Significant Impact" or "Potentially Significant Unless Mitigated," as
indicated by the checklist on the preceding pages,
o Aesthetics o Agriculture Resources ¡g¡ Air Quality
¡g¡ Biological Resources ¡g¡ Cultural/Paleontological Resources 0 Geology / Soils
o Hazards & Hazardous Materials D Hydrology / Water Quality D Land Use / Planning
o Mineral Resources o Noise D Population / Housing
o Public Services D Recreation D Transportation / Traffic
o Utilities / Service Systems o Mandatory Findings of Significance
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East H Street
XXII. DETERMINATION
On the basis of this initial evaluation:
I find that the proposed project COULD NOT have a significant effect on the environment, D
and a NEGATIVE DECLARATION will be prepared.
I find that although the proposed project could have a significant effect on the environment, ~
there WILL NOT be a significant effect in this case because the mitigation measures
described on an attached sheet have been added to the project. A MITIGATED NEGATIVE
DECLARATION will be prepared.
I find that although the proposed project MAY have a significant effect on the environment, D
and an ENVIRONMENTAL IMPACT REPORT is required.
I find that the proposed project MAY have a significant effect(s) on the environment, but at D
least one effect: 1) has been analyzed adequately in an earlier EIR pursuant to applicable
standards, and 2) has been addressed by mitigation measures based on the earlier analysis
as described on attached sheets, if the effect is a "potentially significant impacts" or
"potentially significant unless mitigated." An ENVIRONMENTAL IMPACT REPORT is
required, but it must analyze only the effects that remain to be addressed.
I find that although the proposed project could have a significant effect on the environment, D
there WILL NOT be a significant effect in this case because all potentially significant effects
(a) have been analyzed adequately in an earlier EIR pursuant to applicable standards and
(b) have been avoided or mitigated pursuant to that earlier EIR, including revisions or
mitigation measures that are imposed upon the proposed project. An addendum has been
prepared to provide a record of this determination.
IiAA t (). 7I~1L C/27/02-
.fur Marilyn R. F. Ponseggi ' I
Date
Environmental Review Coordinator
RECON Number 3583E Document Number 15-02,36
52
APPENDIXES
to the Environmental Checklist
are bound separately
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