HomeMy WebLinkAboutResolution 1985 - 0059RESOLUTION NO.85-59-7
APPROVING NEGATIVE DECLARATION RE MAIN
STREET TRUNK SEWER,CONTRACT NO.7-2C-4
A RESOLUTION OF THE BOARD OF DIRECTORS OF
COUNTY SANITATION DISTRICT NO.7 OF ORANGE
COUNTY,CALIFORNIA,APPROVING A NEGATIVE
DECLARATION AND INCORPORATING CERTAIN MITIGATION
MEASURES RE MAIN STREET TRUNK SEWER,CONTRACT
NO.7-2C-4,PROVIDING FOR NOTICE THEREOF AND
DIRECTING FILING OF A NOTICE OF DETERMINATION
***************
The Board of Directors of County Sanitation District No.7 of
Orange County,California,
DOES HEREBY RESOLVE,DETERMINE AND ORDER:
Section 1 That the project concerning which this determination is
made is described as follows:
Construction of a 60—inch gravity sewer in Main Street between Von
Karman Avenue and San Diego Creek (Peter’s Canyon Wash)
Section 2 That an Initial Study,whichsaid study is attached
hereto as Exhibit “A”,of the environmental effects of said project has
been undertaken and completed by the District,and the results thereof
have been reviewed by this Board;and,
Section 3 That based on the findings of the Initial Study this
Board determines that the proposed project could have a significant effect
on the environment,but there will not be a significant effect because
of the mitigation measures described within the Negative Declaration which
is attached hereto as Exhibit “B”;and,
Section 4 •That said Negative Declaration has been circulated for
public review for a period from February 1 to February 28,1985,during
which time the following comments were received on the document:
A.Orange County Transit District,February 12,1985
The OCTD requested a construction schedule for the project to facilitate
actions to prevent potential conflicts between construction and scheduled
transit service.They also requested notification copies of all environmental
documents for Districts’projects which could affect Orange County public
right—of—way as well as copies of construction schedules for those projects when
available.
B.Orange County Water District,February 20,1985
The Water District’s comments were advisory concerning potential
dewatering conditions,groundwater inflow into construction trenches and
the TDS levels of groundwater in the area.
C.County of Orange Environmental Management Agency,
February 25,1985
The EMA had no comment.
D.City of Irvine,February 25,1985
The City requested that two changes be made to the Negative
Declaration.The first refers to encroachment permit mitigation measures and
adds that local encroachment permits must be obtained in addition to those
issued by Cal Trans.The second item refers to air quality in which the City
requests that the statement be changed from “air quality in the project is
generally good”to “air quality at the project site is similiar to that in the
Irvine Business Complex as a whole;”and,
E.State of California Office of Planning and Research,
February 28,1985
OPR Notified the Districts that the Clearinghouse has chosen not to
comment on the project and that the District has complied with State
Clearinghouse review requirements.
Section 5 That this Board hereby notes all comments received on
the Main Street Trunk Sewer Negative Declaration and hereby incorporates
the changes in mitigation measures requested by the City of Irvine;and
Section 6 That,for reasons set forth in said Exhibit “A”and in
accordance with the mitigation measures incorporated in Exhibit “B”and by
this Resolution,it is hereby found that said project will not have a
significant effect on the environment and,therefore,the Board hereby
approves the Negative Declaration regarding the environmental impacts of
said project;and,
Section 7 That the Secretary be,and is hereby,authorized and
directed to file a certified copy of this resolution,the aforesaid
Initial Study,and the Negative Declaration at the District’s office to be
available for public inspection and copying;and,
Section 8 That the Secretary be,and is hereby,authorized and
directed to file a Notice of Determination in accordance with the
Guidelines Implementing the California Environmental Quality Act of 1970,
as amended.
PASSED AND ADOPTED at a regular meeting held March 13,1985.
COUNTY SANITAtION DISTRIC1
of ORANGE COUNTY,CALIFORNIA
P.O.BOX 8127
1084.4 ELLIS AVENUE
FOUNTAIN VALLEY,CALIFORNIA 92708
(7I4~540-2910
(714)962-2411
INITIAL STUDY
(To Be Completed by Lead Agency)
I.Background
A.Name of Proponent COUNTY SANITATION DISTRICT #7 of ORANGE COUNTY
B.Address and Phone Number of Proponent
_______________________________
10844 Ellis Avenue
Fountain Valley,CA 92708 714/540-2910
C.Contact Person Hilary J.Baker,Senior Engineering Aide
D.Title and Location of Project Main Street Trunk Sewer,Contract 7-2C-4
In Main Street between Von Karman Avenue
and Peters Canyon Wash
E.Description of Project Installation of a 60U trunk sewer in Main Street
between Von Karman Avenue and Peters Canyon
Wash necessary to serve the increased develop
ment areas east of Von Karman along Main Street
and to serve the needs of IRWD
EXHIBIT “A”TO RESOLUTION NO.85-59-7
II.Guidelines
A.Does the proposed activity qualify as a project as defined in Section 28.
Yes X No
(If activity does not qualify as project,do not complete remainder of
form.)
B.Does the project qualify as:
1.Ministerial (Section 6)Yes No X
2.Emergency (Section 13)Yes No X
3.A feasibility or planning study (Section 33)Yes No X
4.Categorically exempt pursuant to Article 8 of the State Guidelines
(Section 40)Yes
_____
No x
5.Involves another agency which constitutes the lead agency
(Section 36)Yes
_____
No X If yes,identify lead agency:
(If yes has been checked for any of the above,an Environmental Impact
Assessment/Environmental Impact Report or Negative Declaration need
not be prepared.)
III.Environmental Impacts
(Explanations of all “yes”and “maybe”answers are required on attached
sheets.)
Yes Maybe No
A.Earth.Will the proposal result in:
1.Unstable earth conditions or in changes in
geologic substructures?
2.Disruptions,displacements,compaction
or overcovering of the soil?x
3.Change in topography or ground surface
relief features?
_____
X
4.The,destruction,covering or modification
of any unique geologic or physical features?______
______
X
5.Any increase in wind or water erosion of
soils,either onor off the site?
_____
X
—2—
Yes Maybe No
6.Changes in deposition or erosion of beach
sands or changes in silation,deposition
or erosion which may modify the channel
of a river or stream or the bed of the
ocean or any bay,inlet or lake?
7.Exposure of people or property to geological
hazards such as earthquakes,landslides,
mudslides,ground failure or similar
hazard?
____________
x
B..Air.Will the proposal result in:
1.Substantial air emissions or deteriora
tion of ambient air quality?
_____
X
2.The creation of objectionable odors?X
3.Alteration of air movement,moisture or
temperature or any change in climate,
either locally or regionally?
_____
_____
X
C.Water.Will the proposal result in:
1.Changes in currents or the course of
direction of water movements in either
marine or fresh water?X
2.Changes in absorption rates,drainage
patterns or the rate and amount of
surface runoff?
______
______
X
3.Alterations to the course or flow of
flood waters?
__________
X
4.Change in the amount of surface water
in any water body?
_____
_____
X
5.Discharge into surface waters or in any
alteration of surface water quality,in
cluding,but not limited to,temperature,
dissolved oxygen or turbidity?
6.Alteration of the direction or rate
of flow of ground waters?
7.Change in the quantity of .ground waters,
either through direct additions or with
drawals,or through interception of an
aquifer by cuts or excavations?
______
X
______
-3-
Yes Maybe No
8.Substantial reduction in the amount of
water otherwise available for public
water supplies?
__________
X
9.Exposure of people or property to related
hazards such as flooding or tidal waves?X
D.Plant Life.Will the proposal result in:
1.Change in the diversity of species or
number of any species of plants (including
trees,shrubs,grass,crops and aquatic
plants)?
__________________
2.Reduction of the numbers of any unique,
rare or endangered species of plants?
____________
X
3.Introduction of new species of plants into
an area or in a barrier to the normal
replenishment of existing species?
__________
X
4.Reduction in acreage of any agriculture
crop?
____________
X
E.Animal Life.Will the proposal result in:
1.Change in the diversity of species or
numbers of any species of animals (birds,
land animals including reptiles,fish
and shellfish,benthic organisms or
insects?X
2.Reduction of the numbers of any unique,
rare or endangered species of animals?X
3.Introduction of new species of animals
into an area or result in a barrier to the
migration or movement of animals?
__________
X
4.Deterioration to existing fish or
wildlife habitat?
__________
X
F.Noise.Will the proposal result in:
1.Increase in existing noise levels?
_____
X
2.Exposure of people to severe noise levels?
_____
X
G.Light and Glare.Will the proposal produce new
light or glare?
__________
X
-4-
Yes Maybe No
H.Land Use.Will the proposal result in a
substantial alteration of the present or
planned land use of an area?
__________
X
I.Natural Resources.Will the proposal result in:
Increase in the rate of use of any
natural resources?
____________
X
2.Substantial depletion of any non
renewable natural resource?
____________
X
3.Risk of Upset.Will the proposal involve:
1.A risk of an explosion or the release of
hazardous substances (including,but not
limited to,oil,pesticides,chemicals.
or radiation)in the event of an accident
or upset conditions?X
2.Possible interference with an emergency
response plan or an emergency evacuation
plan?X
K.Population.Will the proposal alter the
location,distribution,density or growth
rate of the human population of an area?
____________
X
L.Housing.Will the proposal affect existing
housing or create a demand for additional
housing?
____________
X
M.Transportation/Circulation.Will the proposal
result in:
1.Generation of substantial additional
vehicular movement?
____________
X
2.Effects on existing parking facilities
or demand for new parking?
______
X
3.Substantial impact upon existing trans
portation systems?
____________
X
4.Alterationsto present patterns of
circulation or movement of people
and/or goods?
______
X
5.Alterations to waterborne,rail or air
traffic?X
—5—
6.Increase in traffic hazards to motor
vehicles,bicyclists or pedestrians?
N.Public Services.Will the proposal have an
effect upon or result in a need for new or
altered governmental services in any of the
following areas:
1.Fire protection?
2.Police protection?
3.Schools?
4.Parks or other recreational facilities?
5.Maintenance of public facilities,in
cluding roads?
6.Other governmental services?
0.Energy.Will the proposal result in:
1.Use of substantial amounts of fuel or
energy?
2.Substantial increase in demand upon
existing sources of energy or require
the development of new sources of energy?
lities.Will the proposal result in a need
new systems or substantial alterations to
following utilities?
Power or natural gas?
Communications systems?
Water?
Sewer or septic tanks?
Storm water drainage?
Solids waste and disposal?
Health.Will the proposal result in:
Creation of any health hazard or potential
health hazard (excluding mental health)?
Yes Maybe No
x
________________
x
__________________
x
________________
x
________________
x
_________
x
_________
_________
x
_________
x
__________________
x
__________________
x
P.Uti
for
the
2.
3.
4.
5.
6.
Q.H.uman
-6-
Yes Maybe No
2.Exposure of people to potential health
hazards?X
R.Aesthetics.Will the proposal result in the
obstruction of any scenic vista or view open
to the public or will the proposal result in
the creation of an aesthetically offensive
site open to public view?
_____
x
S.Recreation.Will the proposal result in an
impact upon the quality or quantity of
existing recreational opportunities?
__________
X
T.Cultural Resources.
1.Will the proposal result in the alteration
of or the destruction of a prehistoric
or historic archaeological site?
____________
X
2.Will the proposal result in adverse
physical or aesthetic effects to a
prehistoric or historic building,
structure or object?
____________
X
3.Does the proposal have the potential to
cause a physical change which would affect
unique ethnic cultural values?X
4.Will the proposal restrict existing
religious or sacred uses within the
potential impact area?
U.Mandatory Findings of Significance.
1.Does the project have the potential to
degrade the quality of the environment,
substantially reduce the habita~of a
fishor 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?
__________
X
—7—
Yes Maybe No
2.Does the project have the potential to
achieve short—term,to the disadvantage of
long-term,environmental goals?(A short-
term impact on the environment is one
which occurs in a relatively brief,de
finitive period of time,while long-term
impacts will endure well into the future.)
3.Does the project have impacts which are
individually limited but cumulative con
siderable?(A project may impact on two
or more separate resources where the
impact on each resource is relatively
small,but where the effect of the total
of those impacts on the environment is
significant.)
4.Does the project have environmental
effects which will cause substantial
adverse effects on human beings,
either directly or indirectly?
IV.Discussion of Environmental Evaluation
See attached sheet.
V.Discussion of Zoning Compatibility
See attached sheet.
VI.Determination
(To be completed by Lead Agency.)
On the basis of this initial evaluation:
__________________
x
________
x
________
I find that the proposed project COULD NOT have a significant
effect on the environment 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 NEGATIVE DECLARATION WILL BE PREPARED.
I find the proposed project MAY have a significant effect
on the environment and an ENVIRONMENTAL IMPACT REPORT
is required.
xxx
Date:January 9,1985 OF
EXPLANATION OF YES AND MAYBE ANSWERS IN SECTION 111-ENVIRONMENTAL EFFECTS
A 2 Disruptions,displacements,compaction or overcovering of
the soil may occur during the-construction of the facilities.
3 Change in topography or ground surface relief features may
occur during construction.
5 Construction will expose soils to wind and water erosion
until activities are completed.
B 1 The use of construction vehicles and equipment may affect
ambient air quality.
C 5&7 Dewatering devices may be employed during the construction
of the proposed facilities.The water from the dewatering
activities may be discharged to the existing flood control
S ys tern.
F l&2 Noise levels may increase as the result of trenching and
paving operations during construction.
M 2&4 The traffic patterns in the construction area may be
disrupted.
6 Traffic hazards in the area may be increased by construction
activities.
0 l&2 Energy will be consumed during construction and the ultimate
operation of the facilities.
-
P 1 Increased use of power or na€ural gas may result from the
larger sized facilities.
4 The implementation of the new facilities will change the
existing sewerage system to accommodate growth projections
of agencies with planning jurisdiction.
5 Drainage patterns may be altered during construction.
R The proposal may result in the obstruction of a scenic
vista during the construction process.
U 3 Short term impacts associated with project construction,
i.e.,traffic congestion,noise,air emissions,etc.may be
significant on a cumulative basis.A mitigated negative
declaration will be prepared.
COUNTY SANITATION DISTRICTS
of ORANGE COUNTY,CALIFORNIA
P.O.BOX 8127
10844 ELLIS AVENUE
FOUNTAIN VALLEY.CALIFORNIA 92708
(714)540-2910
(714)962-2411
ENVIRONMENTAL IMPACT ASSESSMENT
Name of Project:MAIN STREET TRUNK SEWER
Contract No.7—2C-4
Location:In Main Street between Von Karman Avenue
—
and Peters Canyon Wash in the City of
Irvine
Entity or Person Undertaking Project:
A.District:County Sanitation District No.7 of
Orange County
B.Other:
____________________________________________
Staff Determination:
The District’s staff,having undertaken and completed an
Initial Study of this project in accordance with Section 15063
of the Amendments to the California Environmental Quality Act,
for the purpose of ascertaining whether the proposed project
might have a significant effect on the environment,has
reached the following conclusion:
xxx I.The project will not have a significant long
-term effect on the environment because of
mitigation measures incorporated;therefore,
a Negative Declaration can be prepared.
2.The project could have a significant effect
on the environment;therefore,an EIR will
be required.
January 9,1985
Date Sylvester
Manager
NEGATIVE DECLARATION
AND
INITIAL STUDY
MAIN STREET TRUNK SEWER
January 1985
PREPARED FOR
COUNTY SANITATION DISTRICT NO.7 OF ORANGE COUNTY
LEAD AGENCY
COUNTY SANITATION DISTRICTS OF ORANGE COUNTY
P.O.Box 8127
Fountain Valley,CA 92728-8127
(714)540-2910
Contact Person:Hilary Baker
PREPARED BY
COURTON &ASSOCIATES
Contact Person:Lawrence H.Buxton
(714)852-8010
EXHIBIT ~TO RESOLUTION NO.85-59-7
TABLE OF CONTENTS
Page
Introduction 1
Project Description 2
Environmental Analysis 5
Findings 13
INTRODUCTION
This Negative Declaration assesses the environmental effects of
the construction of the Main Street Trunk Sewer.The preparation
of this document has been pursuant to the guidelines of the
implementation of the California Environmental Quality Act (CEQA)
and the County Sanitation Districts of Orange County (CSDOC)
guidelines for the implementation of CEQA.
The information included in this Negative Declaration provides
the appropriate decision making bodies and responsible agencies,
as well as the general public,with analysis of the environmental
consequences of the proposed project.Approval of this document
by the County Sanitation District’s Board of Directors,including
the implementation of appropriate mitigation measures,will
result in the reduction of impacts to the extent that a Negative
Declaration of ImpActsis.appropriate under the California
Environmental Quality Act Guidelines.The mitigation measures
which could be applied to this project are summarized at the end
of this report.
The Board of Directors of County Sanitation District.No..7 of
Orange County authorized the preparation of this document at
their meeting of January 9
,
1985 for a cost of $2,500.
-1-~
PROJECT DESCRIPTION
The County Sanitation District No.7 is proposing the construc
tion of the Main Street Trunk Sewer to provide for adequate
capacity to treat sewage originating in the Irvine Industrial
area and the City of Irvine and its environs.The facilities
will be constructed to provide capacity for anticipated flows
from land use designations which have been approved by local
City and County jurisdictions.The construction of the new
facilities will coincide with the anticipated demand for ser
vices from these areas.
The trunk sewer facilities are being upsized at the request of
the Irvine Ranch Water District (IRWD).The Sanitation
Districts’Boards of Directors,in November,1984 approved in
concept the formation of new District,to be known as District
No.14,which would encompass a large area now served by IRWD.
Further,in January,1985 the Directors hired consultants to pre
pare an Engineer’s Report and an Environmental Impact Report
regarding the formation of said District.Those reports are in
process,and it is anticipated that a Notice of Preparation for
the District No.14 Environmental Impact Report will be circulated
in early February.Tentative schedules indicate the completion
of the formation of activities of District No.14 in October,
1985.
The Main Street Trunk Sewer will enable CSDOC to treat
wastewater collected at San Diego Creek to the east of Jamboree
—2—
Road extending in Main Street to a connection point with the
existing system at Von Karman Avenue directly to the northeast
of John Wayne Airport.These facilities will provide service to
areas discussed in the Environmental Impact Report on
Consolidated Master Plan of Trunk Sewer Facilities to Serve
County Sanitation Districts No.1,North Half of No.6 and No.
7,April,1984 That EIR addressed the impacts associated with
accommodating growth in the Irvine Business Complex area and is
hereby incorporated into this document as a reference.The
Irvine Ranch Water District Master Environmental Assessment
(MEA)and Wastewater Management and Action Plan Environmental
Impact Report (WMAP)also assessed the growth—related issues for
the proposed service to the area and is also hereby incorporated
into this document as a reference.
The Main Street Trunk Sewer is proposed to be a 60-inch gravity
sewer constructed in Main Street.The line will extend in Main
Street from San Diego Creek to a point of connection at Von
Karman Avenue.
An Initial Study and Environmental Assessment on the project
were prepared by CSDOC and are included in this Negative
Declaration.The explanations to the Initial Study responses
indicated the degree of the impacts of the proposed project.
The impacts and mitigation measures associated with land use,
traffic,soils,biology,air quality and visual/aesthetics are
discussed in greater detail.The mitigation measures proposed
will reduce impacts to a level of nonsignificance.
—3—
MAIN STREET TRUNK SEWER
LEGEND
TRUNK SEWER
LOCATION MAP
A
NORTH
NO SCAJE
—4—
ENVIRONMENTAL ANALYS IS
LAND USE
The service area includes existing land uses of business,commercial
and industrial facilities,and residential areas which have been
constructed in response to the General Plan.The surrounding region
to the west of the project area is developed,including John Wayne
Airport.The area to the east includes the University of California,
Irvine and its service area and the El Toro Lighter Than Air Base lies
to the north of the project site with general,industrial,and
business office uses and hotels to the south of the project area.
The City of Irvine has master planned the service area within CSDOC
No.7.The installation of new facilities at this time is required
due to the planned implementation of several developments east of
Von Karman Avenue.Existing land uses are becoming more intensified
due to the conversion of industrial condomioniums to small business
offices,the sudden influx of new hotels in the area,construction
of new office space and the occupancy of commercial and business
buildings which have not been fully occupied.In addition,other
new planned and improved developments being constructed in the
vicinity affect the capacity available in the backbone trunksewer
systems.
Project Impacts
The proposed facilities will accomodate new development and
implementation of General Plan densities east of Von Karman Avenue,as
approved by local agencies.The new trunk sewer will allow the
Sanitation Districts to operate facilities with adequate capacity
and greater reliability to insure pu~lic health.All National
Pollutant Discharge Elimination Systems (NPDES)requirements
will be met.There are no archeological or historical resources
present.The project alignment is within existing disturbed roadways
and utilities and biological and aesthetic resources will not be
—5-
impacted.No public services facilities will be impacted by the
construction as a result of the proper design of facilities.
Partially developed land will be further developed reflecting the
approved General Plan densities.
Mitigation Measures
The sizing of the Main Street Trunk Sewer is proposed to accommodate
the growth wtiich will be realized through the tributary systems
in response to the local General Plans.Any change in existing land use
for the Main Street Trunk Sewer alignment is insignificant because
the streets have already been constructed.No mitigation measures
other than the restoration of the streets to previous conditions
are required.Conversion of partially developed land to a more
developed status is in conforraance with the adppted General Plans
and requires no mitigation.
TRAFFIC
The traffic on Main Street is generally commuters going to and
from work in the existing developed areas as well as trucks providing
deliveries to commercial and industrial facilities in the area.
Main Street currently supports commuters which are seeking avenues
to convey them from the area east of John Wayne Airport to
the west of John Wayne Airport.Main Street is often times used
as an alternative route to the San Diego Freeway and MacArthur Boulevard.
Project Impacts
Short Term Project Impacts
The primary impact of the proposed project will occur during the
construction of the.proposed Main Street Trunk Sewer.The placement
of the sewers will require the excavation of some portion of the
roadway,although tunneling in some sections may also occur.
Significant impacts in terms of traffic congestion and changes
to present patterns of circulation could result,particularly if
-6-
no traffic mitigation measures are implemented.In addition,
improper traffic control techniques and warning signs could
potentially result in hazards to traffic during project construction.
Impacts to existing traffic volumes can be minimized by varying
construction techniques on a road segment by road segment basis.
Potential construction techniques can be implemented which would
reduce traffic volume impacts including tunneling under busy
intersections,reduced hours of construction,and construction
within the roadway shoulders where appropriate.
To minimize traffic hazards which may exist during project construction,
traffic control plans will be prepared which comply with the Manual
of Traffic Controls as published by CALTRANS,as well as local,
City and County requirements.
The construction phase of the project will generate some additional
traffic volumes to the construction site on a daily basis.The
additional traffic generated will include employee trips and
transport of equipment and materials to the site.The additional
construction project site traffic generation will have a negligible
effect on daily traffic volumes and the roadways on which construction
is proposed.
Long Term Project Impacts
Upon project completion the roadways will be restored to their
existing conditions in terms of roadway geometrics and intersection
controls.From a traffic engineering perspective,the proposed
sewerage system improvements will have no direct long term impacts in
terms of the generationof additional traffic or modifying existing
traffic flow,once the proposed system is installed.
Mitigation Measures
The following guidelines are provided for ways to reduce traffic
impacts during project construction.These techniques should be
considered to minimize the impacts of project construction:
—7—
1.Where feasible,locate the sewerage line within the public
right-of-way.
2.Where feasible,locate the sewerage line along the center
line and provide for the existing number of travel lanes.
3.Reduce hours of construction during peak travel hours only on
heavy traffic days.
4.Full Street closure during night time construction hours
except to service local access traffic.
5.Traffic Control Plan should be prepared prior to the construction
phase of each project as implementation proceeds.
6.CSDOC should comply with traffic control requirements as
identified by local jurisdictions to the maximum extent
possible.
7.The construction techniques for the implementation of the
proposed trunk sewers,such as tunneling,cut and cover with
partial Street closure,or cut and cover with full street
closure should include consideration of the ability of the
roadway system,both the street in question and alternate
routes,to carry existing traffic volumes during project
construction.
8.Public streets should generally be kept operational during
construction,particularly in the morning and evening peak
hours of traffic.
9.Public roadways should be restored to their existing condition
after project construction is completed.
10.Traffic control plan should comply with the Manual of Traffic
Controls published by CALTRANS,and local requirements,to
minimize any traffic hazards which may exist during project
construction.
11.CALTRANS Encroachment Permits will be obtained as necessary.
SOILS
The project will result in the removal and replacement of soils
during construction.The project area is developed and landscaped.
Project Impacts
Construction activities will result in the removal and replacement
of soils and asphalt within the project area.Recompaction of the
trenches will be tested by an approved laboratory.Construction
activities will create dust on a short—term basis and those
portions of the project which have excavation and open trenches
will be subject to wind and rain erosion.It is anticipated that
no more than 1,000 feet of roadway will be opened at any given time.
Mitigation Measures
1.Exposed soil areas should be watered periodically during
construction to minimize dust and wind erosion.
2.Grading should be staged to lessen soil erosion and minimize
the area of bare soil exposed to precipitation.
3.Compliance with the appropriate provision of the “Model
Erosion Control and Drainage Ordinance”contained in Appefldix
B of the adopted 208 Plan,South Coast Area.
HYDROLOGY
The project area lies within disturbed and engineered roadways.
Project Impacts
S
The project site will be subject to erosion during rainstorms
and alteration of the flow of run off water during construction.
-9-
Mitigation Measures
1.Run off from construction should be controlled on site and
directed off site in compliance with the CSDOC’s General
Dewatering Permit (NPDES NO.CAO1OÔ119).
2.The pipeline is designed to be protected from 100 year flood
flows.
BIOLOGY
The project site lies within already disturbed roadways.
Project Impacts
There will be little or no impact to biological systems as a
result of the project.
Mitigation Measures
No mitigation measures are required.
AIR QUALITY
The air quality in the project is generally good.
Project Impacts
Construction activities may create dust from operations.Construction
equipment will generate emissions on a short-term basis.
Mitigation Measures
1.The implementation of soils erosion techniques as identified
in previous sections of this Negative Declaration will accomplish
the mitigation of fugitive dust.
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2.Use of diesel-powered construction equipment rather than
gasoline-powered construction equipment may be encouraged to
effect exhaust emission reductions and evaporative and
crank case HC emissions reductions.
VISUAL AND AESTHETICS
The project area is generally developed with improved streets and
lands capings.
Project Impacts
The project will result in short-term impacts including open
trenches,stockpiled materials and the presence of construction
equipment.The completed project will be beneath the existing
asphalt and will not be visible.
Mitigation Measures
1.Construction activities should be limited to 1,000 feet of
open trench at a given time.
2.All trenches should be closed or covered as soon as possible;
trenches should be covered during periods of nonconstruction,
such as holidays and weekends.
3.All streets and landscaping will be restored to previous
conditions.
NOISE
Noise in the project area is currently generated by surface
vehicles and by aircraft landing at John Wayne Airport.
Project Impacts
Implementation of the project will result in noise generated by
construction equipment.There will be no noise generated by the
completed project.
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Mitigation Measures
1.Use of noise attenuation devices on motorized construction
equipment to reduce acoustic impacts during the construction
phase.
2.Limiting construction activities to normal work days and day
light hours in compliance with appropriate noise ordinances.
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FINDINGS
The project will not have a significant long term effect on the
environmental because of the mitigation measures incorporated.
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STATE OF CALIFORNIA)
SS.
COUNTY OF ORANGE
I,RITA J.BROWN,Secretary of the Board of Directors of County
Sanitation District No.7 of Orange County,California,do hereby certify that
the foregoing Resolution No.85—59—7 was passed and adopted at a regular
meeting of said Board on the 13th day of March,1985,by the following vote,
to wit:
AYES:Don Smith,Chairman,Richard B.Edgar,Dan Griset,Philip Maurer,
David Sills,Roger Stanton,James Wahner
NOES:None
ABSENT:None
IN WITNESS WHEREOF,I have hereunto set my hand and affixed the official
seal of County Sanitation District No.7 of Orange County,California,this
13th day of March,1985.
Rita J.Brown,Secretary
Board of Directors of County
Sanitation District No.7
of Orange County,California