HomeMy WebLinkAboutPC RES 3820RESOLUTION NO. 3820
A RESOLUTION OF THE TUSTIN PLANNING COMMISSION
RECOMMENDING THAT THE CITY COUNCIL CERTIFY
THE FINAL ENVIRONMENTAL IMPACT
REPORT/ENVIRONMENTAL IMPACT STATEMENT FOR
THE REUSE AND DISPOSAL OF THE MCAS-TUSTIN AS
COMPLETE AND ADEQUATE FOR THE HOUSING
ELEMENT UPDATE PURSUANT TO THE CALIFORNIA
ENVIRONMENTAL QUALITY ACT.
The Planning Commission of the City of Tustin does hereby resolve as follows:
I. The Planning Commission finds and determines as follows:
A.
Implementation of the Housing Element Update's goals includes proposed
housing development within the MCAS-Tustin Reuse Plan area and infill areas
outside the Reuse Plan area throughout the City. Since the majority of future
housing units described in the Housing Element Update would be located
within the MCAS-Tustin Reuse Plan area, an Initial Study was prepared to
determine if impacts to the environment of such housing were analyzed and
addressed in the previously approved Final EIS/EIR for the Disposal and
Reuse of the MCAS Tustin (Program EIS/EIR for MCAS-Tustin); and
B.
Marine Corps Air Station (MCAS) Tustin has been determined surplus to the
needs of the Federal government and has been approved for disposal by the
United States Department of the Navy (DON) in accordance with the Defense
Base Closure and Realignment Act (DBCRA) of 1990 (10 USC 2687) and the
pertinent base closure and realignment decisions of the Defense Base
Closure and Realignment Commission approved by the President and
accepted by Congress in 1991, 1993, and 1995; and,
C.
The City of Tustin has been approved by the Department of Defense as the
Local Redevelopment Authority (LRA) for MCAS Tustin and is responsible for
preparing a Reuse Plan describing the reuse of the installation and providing
recommendations to the DON for disposal of the former base to various
public agencies and the homeless. The goal of base disposal and reuse is
economic redevelopment and job creation to help replace the economic
stimulus previously provided by the military installation. The LRA submitted
the Reuse Plan for MCAS Tustin to the Department of Defense in October
1996 and an Errata amending the Reuse Plan in September 1998; and,
D.
On January 16, 2001, the Tustin City Council certified the Joint Final
Environmental Impact Statement/Environmental Impact Report (EIS/EIR) for
the Disposal and Reuse of the Marine Corps Air Station (MCAS) Tustin (the
Program EIS/EIR for MCAS-Tustin). The United States Navy issued a
Record of Decision on the Program EIS/EIR in March 2001. The MCAS
Tustin examined in the Program EIS/EIR was 1606 acres; and,
Resolution No. 3820
Page 2
E..
In accordance with Section 15132 of the State Guidelines, and the Council on
Environmental Quality Regulations (40 CFR parts 1500-1508), the Final
EIS/EIR consists of:
1. The initial Draft EIS/EIR, revised Draft EIS/EIR, and Final EIS/EIR
including Comments and Responses on the revised Draft EIS/EIR and all
appendices and technical reports thereto;
2. Comments and Responses on the Final EIS/EIR;
3. Redevelopment Agency staff report to the Planning Commission dated
November 28, 2000;
4. Minutes of the City of Tustin Planning Commission, dated November 28,
2000;
5. Redevelopment Agency staff report to the City Council dated January 16,
2001, including the letters submitted to the Planning Commission, a letter
submitted to the Tustin City Council and the City of Tustin's written
responses, and all other attachments;
6. Minutes of the Tustin City Council, dated January 16, 2001; and
Pursuant to CEQA Guidelines Section 15153, the Tustin City Council must
consider the approved Final EIS/EIR for the Disposal and Reuse of MCAS
Tustin, prior to project approval, certify that the Final EIS/EIR for the Disposal
and Reuse of MCAS Tustin has been completed in compliance with CEQA,
certify that the Final EIS/EIR for the Disposal and Reuse of MCAS Tustin
reflects the City's independent judgement and analysis, make necessary
findings, and certify that the Final EIS/EIR for the Disposal and Reuse of
MCAS Tustin is complete and adequate for Housing Element Update; and,
F.
Pursuant to California Environmental Quality Act (CEQA) Guidelines Section
15163, the City of Tustin has completed an Initial Study and determined that
all effects associated with the implementation of the Housing Element Update
were evaluated in the Program EIS/EIR for MCAS Tustin, that no new effects
would occur, that no substantial increase in the severity of previously
identified significant effects would occur, that no new mitigation measures
would be required, that no applicable mitigation measures previously not
found to be feasible would in fact be feasible, and that there are no new
mitigation measures or alternatives applicable to the project that would
substantially reduce effects of the project that have not been considered and
adopted.
G.
The Planning Commission of the City of Tustin does hereby find that the
proposed project is within the scope of the Final EIS/EIR for the Disposal and
Reuse of MCAS Tustin (Program EIS/EIR for MCAS-Tustin), an EIR approved
Resolution No. 3820
Page 3
from earlier project, and that the Program EIS/EIR for MCAS-Tustin adequately
describes the general environmental setting of the Housing Element Update, the
significant environmental impacts of the implementation of the Housing Element
Update, and alternatives and mitigation measures related to each significant
effect.
III.
The Planning Commission of the City of Tustin recommends that the Tustin City
Council find that the Final EIS/FEIR for MCAS Tustin, adopted and certified by
the City Council, is adequate, complete, and prepared in compliance with the
requirements of CEQA and the State Guidelines, is the controlling
environmental document for this project, and that this project is in compliance
with the Final EIS/FEIR prepared for MCAS Tustin; and
IV.
The Planning Commission hereby recommends that the City Council find that
the environmental effects of the Housing Element Update identified in the Initial
Study have been substantially lessened in their severity by the imposition and
incorporation of certain previously approved mitigation measures as identified in
Exhibit A.
PASSED AND ADOPTED at a regular meeting of the Tustin Planning Commission
held on the 28th day of January, 2002.
ELIZABETH A. BINSACK
Planning Commission Secretary
Chairperson
STATE OF CALIFORNIA )
COUNTY OF ORANGE )
CITY OF TUSTIN )
I, ELIZABETH A. BINSACK, the undersigned, hereby certify that I am the Recording
Secretary of the Planning Commission of the City of Tustin, California; that Resolution No.
3820 passed and adopted at a regular meeting of the Tustin Planning Commission, held
on the 28th day of January, 2002.
ELIZABETH A. BINSACK
Planning Commission Secretary
Exhibit A of Resolution No. 3820
INITIAL .STUDY
FOR:
CITY OF I'USTIN
HOUSING ELEMENT
UPDATE
City of Tustin
Community l)ev¢lopmcnt Department
300 Centennial Way
Tustin, CA 92780
CITY OF TUSTIN
('Otttacl .'
Elizabeth A. Binsack
Director
CommuniO' Development
Department
(?Oltla£1:
dustina Wil[kom
.4,sociate Planner
DECEMBER 2001
Table of Contents
Section PaRe
1. BACKGROUND
1.1 PROJECT I.OCA'I'ION ................................................................................................................................ I
1.2 EN\:IRONMF. NTA1. SE l TING .................................................................................................................. 1
1.3 Project descriplion ........................................................................................................................................ 4
1.4 City action required ...................................................................................................................................... 5
2. ENVIRON.MENTAl. CHECKLIST
2. I ENVIRONMENTAL F..\CfORS POTENTI.,\LLY AFFECTEI) ............................................................... 6
2.2 DETF. RMINATION: (To Be Completed By The Lead .,\gency) ................................................................6
2.3 EVAI.UATION OF ENVIRONMENTAL IMPACTS ................................................................................ 7
2.4 RFFERENCES ............................................................................................................................................. 8
3. ENVIRONMENTAL ANAI.YSIS
3.1 AESTIIETICS ............................................................................................................................................ 17
3.2 AGRICL'I.TURE RESOI/RCt'~S ................................................................................................................ 18
3.3 AIR QUALITY .......................................................................................................................................... 20
3.4 BIOLOGICAL RESOU R(?ES ................................................................................................................... 23
3.5 (?l ;I.TL'RAL RESOURCES ....................................................................................................................... 25
3.6 GEOLOGY AND SOILS ........................................................................................................................... 28
3.7 HAZAILDS AND I I,-XZARDOL'S MATI,;I{IALS ...................................................................................... 31
3.8 HYDROLOGY AND WATF, R QUALITY. .............................................................................................. 34
3.9 I,ANI) [:SE ANI) PLA.N.~ING ................................................................................................................. 38
3.10 MINERAL RESOURCES .......................................................................................................................... 39
3.11 NOISE ........................................................................................................................................................ 40
3.12 POPL'LA'I'ION AND ItOUSING ............................................................................................................. 45
3.13 PL'BLIC SERVICES .................................................................................................................................. 46
3.14 RF, CI~.EATION .......................................................................................................................................... 50
3.15 TRANSPORTATION TRAFFIC ............................................................................................................... 50
3.16 I:TII,ITIES AN[) SERVICE SYSTEMS .................................................................................................. 58
3.17 .M..\NDATORY FINDINGS OF SIGNIFICANCI" .................................................................................... 62
List of Figures
Figure
F~gure I Regional Location ........................................................................................................................................ 3
l. ist of Tables
"I'able Pap_e
'FABI..E 1 NOISE LIiVEI.S (;ENEILATED BY ']'YPIC.-\I. CONSTRUCI'I()N EQUIPMENT. ............................... 44
City of Tustin · Page i
1. Background
This Initial Study has been prepared to evaluate the potential environmental effects associated with the adoption of
the City of Tustin ltousing Element Update (Housing Element Update). This is a revision to the Housing Element
that is required eve~' five (5) years by Government Code Section 65588 (b). This analysis has been conducted in
compliance with the California Environmental Qualily Act (CIiQA) and Guidelines, as amended.
PROJECT LOCA T/ON
The Rcgional I.ocation Map (Figure I) shows the location of the City of Tustin ,,vithin thc context of the Orange
County region. Tnstin is located in Central Orange County and Js bordered by a developed unincorporated portion
of Orange County iNorth Tustin) to the north, the City of Orange to the northwest. Santa Ana to the west and
south'`vest, lrvine to the south, southeast, anti east. Thc 55 Freeway tbrms thc majority of the City's western
boundary, the 1-5 transects thc southwestern area of the City. and the Eastern Transportation corridor parallels the
City's eastern border.
ENVIRONMENTAL SETTING
1.2.1 Existing Land L'se
The City of Tustin is developed with a mix of commercial, industi'ial, and residential uses. Thc growth trends in
Tustm show significant population increases in the 1980s, followed by a slower rate of g-rowth in the 1990s. From
1980 to 1990, the City's population increased from 36,119 tit 50.689 (40.3 percent). Current population estimates
indicate a population increase of 16,464 persons since 1990. representing an increase of 32.5 percent. In 1999, the
City's estimated population of 67,153 represented 2.4 percent of the County's total population.
The California Department of Finance (1)OF) estimated that in January 2000, 24,861 homes existed in Tustin, and
the average household size was 2.94 persons. Based on data derived from Ihe National Decision Systems. 76
percent of owner-occupied units in the (:it)' are valued at $200.000 or higher. Thc median value Ibc the owner-
occupied units is S272,970. which is higher than the County as a whole, where the median value is S266,771.
Overall, the median resale home prices for zip codes in the City of Tustin ranged from S210,000 Il) S386,000.
According to RealFacts (a database publisher spcciali7ing in thc housing market), the average rent for thc City of
Tustin was S1.067 in March 2000. Tustin has a high percentage of multi-family' units compared to other Orange
County communities. Approximately 31.5 percent ot' the housing stock is comprised of single-family detached units
while 68.5 percent of the housing stock co,~sists of attached anti multi-family units with five or more units.
Additionally, Tustin has a proportionally higher amount of renters than ov,'ncrs. In 1999.41 percent of the housing
stock was owner-occupied and 59 percent was renter-occupied.
According to '[able H-7 of thc llousing Element Update, 936.32 acres of vacant land exist in lhc (.Til3' of 'rustin,
while another 11.42 acres of land are underutilized. Based on land use densities, this ofl;vrs a potential for 29,576
total housing units on these properties at buildout capacity. Of thc 936.32 acres iff vacant land, 389.2 acres are
locaicd at the former MCAS-Tustm, 539 acres are located in the East Tustin Spccitic Plan areas, and 8.12 acres arc
localcd generally in infill neighborhoods. The 11.42 acres of underutilized land are located generally in the Old
'['own area.
Thc City of Tustin is required, per California IIousing Element la,,,,', to mee! its "fair share" of existing and fulure
housing needs for all income groups. As determined by the Southern Calilbrnia Association of Government
(SCAG). Tustin's "fair share" is 3.29g additional tlnits 1hr the 2000-2005 planning period. Based on the analysis of
vacant land and underutilized land within the City, 2,901 of the 3,298 housing units (90%) woukl be provided at the
former Marine Corps Air Station (MCAS) Tustin in accordance with the approved General Plan Amendment. Other
housing units would be provided through ;hall developments within the rest of the City.
City of Tustin · Page 1
1. Background
MCAS-Tustin.
Existing land uses and activities at the MCAS-Tustin prior to closure of the base are described in the Masterplan
Marine Corps Air Station Tustin (DON 1989). The single largest land use category in the Masterplan was
airfield operations. The next largest category was agricultural uses. On January 16, 2001, the City Council
adopted a General Plan Amendment to change the City's land use designation for MCAS-Tustin from Military
and Public. Institutional to MCAS Tustin Specific Plan. The Specific Plan area is generally bounded by Edinger
Avenue to the north, llarvard Avenue to the east, Barranca Parkway to the soulh, and Red Hill Avenue to tile
west.
Infill developments
The infill developments consist of utilizing vacant and underutilized land in olher areas of City. The areas
include infill neighborhoods primarily in the Old Town area and scattered infill neighborhoods elsewhere in the
(Til3' (Figure 1 of the Housing Element Update).
Circumstances surrounding the implementation of the Housing Element Update at the MCAS-Tustin and in thc infill
sites are essentially the same. In general, these similar circumstances can be summarized as fbllows:
· Itousing units at MCAS-Tustin would be developed in an urban setting involving mixed land uses, similar to
infill development in other areas of the City;
· Development of housing units in at MCAS-Tustin and infill sites will be required to comply with thc same
City's and State's existing regulations pertaining to air quality, noise, water quality, construction standards, etc.
· Both MCAS-Tustin areas and infill sites will be served by thc same utility providers and will utilize the same
utility system:
· Both MCAS-Tustin areas and infill sites will be served by the same public service agencies such as ()range
County Fire Authority. Tustin Police Department, 'l'ustin Parks and Recreation Department, etc.;
· Children in MCAS-Tustin and infill sites of Tustin would attend Tustin Unified and [trine Unilied schools;
· Residents from MCAS-Tustin and infill sites would utilize existing and fi,ture parks and recreational facilities
available to all City residents; etc.
City of Tustin · Page 2
1. Background
Figure 1 Regional l.ocation.
City of 'Pustin · Page 3
1. Background
1.2.2 Surrounding Land Use
The (7it3' is located in a mature area with a mix of land uses. The surrounding cities of Santa Aha, Orange. and
lrvine contain a mix of residential, commercial, industrial, and open space uses.
4.3 PROJECT DESCRIPTION
1.3. I Proposed Land Use
The Ilousing Element is one of the seven General Plan I£1ements mandated by' the State of Califi)rnia. as articulated
in Sections 65580 to 65589.8 of thc Government Code. State I.aw requires that the ltousing Element consist of"an
identification and analysis of existing and projected housing needs and a statement of goals, policies, quantified
objectives, and scheduled programs Ibr the preservation, improvement and development of housing." The
residential character of the City is. to a large extent, determined by the variety of its housing stock, its location and
physical condition. The Housing L:lement is, therefore, an official municipal response to the need to provide
housing lbr all economic segments of the population.
The City of Tustin's General Plan Housing Element and this llousing Element Update detail thc City's live-year
strategy ibr enhancing and preserving thc community's character, sets forth strategies for expanding housing
opportunities tbr thc City's various economics segments, and provides thc primary pohcy guidance for local
decision-making related to housing. The Housing Element Update provides the implementation strategies for
addressing the housing needs of 3'ustin residents through the 2000-2005 planning period.
As described in Section 1.2.1. ninety (90) percent of the housing units required bb' the Housing Element Update
would be provided at the MCAS-Tustin. Other units would be provided through scattered thrill developments
within the (7it3'. As a result, the initial study prepared for the Housing Element Update focuses primarily on the
MC..\S-Tustin Specific Plan area. This is because the circumstances of the MCAS-Tustin project studied in thc
Program EIS EIR and thc llousing Element Update project are essentially thc same. The Final EIS.'EIR for the
Disposal and Reuse of MC..\S-Tustin is a Program EIS'EIR tbr MCAS-Tustin that was certified by the City Council
on January 16, 2001 (herein afler referred to as Program EIS EIR for MCAS-Tustin). The Program EIS'EIR for
MCAS-Tustin discusses impacts related to the implemenlation of the Specific Plan and is incorporated in the initial
study bb' this reference. A copy of the Program ElS EIR for MCAS-'Fustin is available tbr public review at the City
of'Fustin Community Redevelopment Agency located at 300 Centennial Way, Tustin, Califbrnia 92780.
The Housing Element Update provides in-depth analysis of the City's population, economic, household, and
househokt stock characteristics as required by State Law. Thc Element also provides a comprehensive evaluation of
programs and regulations related to priority goals, objectives, and program actions that directly address the needs of
Tustin residents.
Thc llousing Element Update is only one facet of the City's overall planning program. Thc California Government
Code requires that General Plans contain an integrated, consistent set of goals and policies. Thc Housing Element
is, therefore, affected by development policies contained in other elements of the General Plan.
1.3.2 Project Phasbtg
The l-lousing Element Update addresses the 2000-2005 five-year timeframe. Implementation of thc housing elcmcnt
at MCAS-Tustin is contingent upon adoption of the proposed Specific Plan tbr MCAS-'l'ustin.
City of Tustin · Page 4
1. Background
1.3.3 Purpose of /nitial Study
As discussed in the prqject location, most of the development of new housing units would take place at the former
MCAS-Tustin. The purpose of the initial stud)' is to determine whether the Program ElS'I/IR fi)r MCAS-Tustin
~ould adequately describe the project's general enx'ironmental setting, significa,u enx'ironmental impacts, project
alternatives, and mitigation measures related to each significant impact. The initial stud)' is also designed to
determine whether there arc any additional, reasonable alternatives or mitigation measures that should be considered
as ways of avoiding or reducing the project's significant effects.
The City of Tustin is close to its build-out capacity. Opportunities to meet ~ts "fair share" to build additional 3,298
housing units in the City largely depend on the availability of the former MCAS-Tustin land. This land is the only
significant area of vacant and underutilized land thal is available Jn the City to accommodate a large number of
housing units. Other vacant land identified in the East Tustin area are relatively built out since almost all
entitlements in accordance to the East Tustin Specific Plan have been granted and the project is currently under its
final construction stage.
]'he Program EIS'EIR for MCAS-Tustin identified several impact categories where significant impacts to the
environment could not be mitigated to an insignificant level, and accordingly a Statement of Overriding
Considerations was adopted by the ('?it3' of Tustin for approval of the General Plan Amendment on January 16, 2001.
For the purpose of this initial study, an evaluation has been made tu eusure that impacts previously identified
relating to. this project ha~e not been intensified. Mitigation measures identified in the Program EIS EIR for MCAS-
Tusfin to minimize the impact that would be applicable to this project have been identified.
Thc Program EIS EIR for MCAS-Tustin also identified several impact categories where impacts could be lessened
to a level of insignificance with the imposition of mJtigation measures. Each of these impact categories was
analyzed to determine if new impacts associated with the project would occur that were not identified in the
Program EIS.EIR.
lmpact categories not identified to have a potential impact in the Program EIS EIR for MCAS-Tustin have been
reviewed and identified in the initial stud)' to determine if the project would create an5' additional or new significant
impacts x~hich were not considered by the Program ElS liIR for MCAS-Tustin.
~.4 CiTY ACTION REQUIRED
The proposed action is the adoption of the llousing F. lement Update of the City's General Plan (the "Housing
Element Update").
City of Tustin · Page 5
2. Environmental Checklist
ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED
The envirunmental factors checked below would be potentially affected by this project, invoMng at least one impact that is a
"Potentially Significant Impact." as indicated by thc checklist on pages 9 through 15.
[] Aesthetics [] A§ncultu."al Resources [] Air Quality
[] Biolog~cel Resources [] Cultural Resources [] Geo,oGy I Soi:s
[] Hazards & Hazardous Materials [] '.-.ydro,3gy / Water Quality [] Land Use i P,anning
[] Mine,'a: Rescurces [] No~se [] Popula~n I Housing
[] Pubrc Services [] Recreation [] Transpor'ation ! Traffic
[] Ut~lilJes i Service Systems [] Mandatory Rndiqgs o' Signih~nce
2.2 DETERMINATION: (To Be Completed By The Lead Agency)
On the basis of this initial evaluation, l find that:
---] The proposed project COI;I.D NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will
be prepared.
---] Although the proposed prqiect could have a significant effect on the environment, there will not be a significant effect in this
case because revisions in the project have been made by or agreed to by the project proponent. A MITIGATED NI";GA'I'IVE
DE(i'I.ARATION will be prepared.
----] The proposed project MAY have a significant effect on the environment, and an ENVIRONMEN'I'AI. IMPACI' REI)ORT is
required.
[SJ~ ..\lthough the proposed project could have a significant effect on the environment, because all potentially significant effects
(al 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 project, nothing f'urther is required.
[~ Pursuant to Section 15164 ofthe CEQA Guidelines, an I:.IR has been prepared earlier and only minor technical changes or
additions are necessary to make the previous EIR adequate, and these changes do not raise important new issues about the significant
effects on the environment. An ADDENDUM to the EIR shall be prepared.
[~] Pursuant to Section 15164 of the CEQA Guidelines, and EIR has been prepared earlier; however, subsequent proposed
changes in the project anti:or new inibrmation of substantial importance will cause one or more significant effects no previously
discussed. A SUBSEQUENT EIR shall be prepared.
S~gnaturc Date
Printed name For
City of Tustin · Page 6
2. Environmental Checklist
2.3 EVALUATION O!v ENVIRONMENTAL IMPACTS
A brief explanation is required for all answers except "No Impact" answers. ]'he environmental checklist on pages 9-I 5 is the starting
point of thc analysis. A "No Impact" answer is adequately supported it' the referenced intbrmation sources show that the impact
simply does not apply to projects like lhe one invoh'ed (e.g. the project falls outside a fault rupture zone). A "No Impact" answer is
explained where it is based on project-specitlc factors, as well as general standards (e.g. thc project would not expose sensitive
receptors to pollutants, based on a project-specific screelting analysis).
All answers take account of the whole action invoh'ed, including off-site and on-site, cumulative and project-level, indirect and direct,
and construction and operational impacts.
Once the lead agency has determined that a particular physical impact may occur, then the checklist answers must indicate whether the
impact is potentially significant, less than signiticant with mitigation, tlr less than significant. "Potentially Significant Impact" is
appropriate if there is substantial evidence that an effect may be significant. If there are one or more "Potentially Significant Impact"
entries when the determination is made, an EIR is required. In this case, the Program ElS 'EIR fbr MCAS-Tustin has been reviewed to
determine if it is adequate tbr this project.
I'-;arlicr analyses may be used for subsequent activities if'the effects of the project have been adequately analyzed in a program EIR. In
this case. a brief discussion should identify the following:
Earlier Analysis Used. Identify and state where they are available fi)r review.
Impacts Adequately Addressed. Identi~, which effects from the above checklist were within the scope of and adequately
analyzed in an earlier document pursuant to applicable legal standards, and state whether such effects were addressed by
mitigation measures based on the earlier analysis.
Mitigation Measures. For effects that are "l.ess than Significant v,'ith Mitigation Measures Incorporated." describe the
mitigation measures which were incorporated or refined fi'om the earlier document and the extent to which they address site-
specific conditions for the project.
l,ead agencies arc encouraged Itl incorporate into the checklist references to intbrmation sources for potential impacts (c.g. general
plans, zoning ordinances). Re£erence to a previously prepared or outside document should, where appropriate, include a reference to
the page or pages where the statement is substantiated. A source list should be attached, and other sources used or individuals
contacted should be cited in the discussion.
Supporting lnfi)rmation Source,: A source list should be attached, and other sources used or indMduals contacted should be cited in
the discussion.
City of 'Dustin · Page 7
2. Environmental Checklist
!. AESTHETICS-. Would the project:
a) flare a substantial adverse effect on a scenic vista?
b) Substantially damage scenic resources, including, but not limited
to, trees, rock outcroppings, and histnric buildings within a state scenic
highway?
c) Substantiall3' degrade the existing visual character or quality' of the
site and its surroundings?
ti) Create a new source of substantial light or glare which would
adversely' affect day or nighttime views in the area?
II. A(;RICL.'.LTISRE RESOURCES: In determining whether
impacts to agricultural resources arc significant environmental effects,
lead agencies may refer to the California Agricultural I.and Evaluation
and Site Assessment Model (1997) prepared by thc California Dept. o£
Conservation as all optional model to use in assessing impacts on
agricuhurc and farmland. Would the pro. jeer:
a) Convert Prime Farmland. Unique Farmland, or Farmland of
Statewide Importance (Farmland), as shown on the maps prepared
pursuant to thc Farmland Mapping and Monitoring Program of the
Calilbrnia Resources Agency. to non-agricultural use'?
b) Conflict with existing zoning for agricultural use. or a \Villiamson
Act contract'?
c) Involve other changes in the existing enviro,lmen! which, due to
their location or nalure, cnuld result in conversion of Farmland. to non-
agricultural use'?
Iii. AIR QUAI,ITY: \Vhere available, the significance criteria
established by tile applicable air quality management or air pollution
control district may be relied upon to make tile following
detenninalions. Would the project:
a) Coullict with or obstruct implementation of the applicable air
qt, ality plan'?
b) Violate any air quality standard or contribute substantially to an
existing or projected air quahty violation?
c) Result in a cumulatively considerable net increase nfanv criteria
pollutant for which the project region is non-anainmcnt under an
applicable tkderal or state ambient air quality standard (including
releasing emissions which exceed quantitative thresholds ibr ozone
precursors)?
,%w More
Sign(/icant Severe
Impact lmpact.s
.Vo Substantial
Change From
Previous
Analysix
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
City of Tustin · Page 8
2. Environmental Checklist
New More
Significa,t Severe
Impact Impacts
d) Expose sensitive receptors to substantial pollutant concentrations? []
e) Create objectionable odors affecting a substantial number of
people'?
IX'. BIOI.OGICAL RESOURCES: - \\'ould the project:
a) flare a substantial adverse effect, either directly tlr 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 Gamc or U.S. Fish and
Wildliti: Service?
b) Have a substantial adverse effect on any riparian habitat or other
sensitive natural conununity identified in local or regional plans,
policies, regulations or by the Calilbmia Department of Fish and Game
or U.S. Fish and Wildliff Service?
c) llave a substantial adverse effecl on fedcrally protected wetlands
as defined by Section 404 of the Clcan Water Act (including, but not
limited to, marsh, vernal pool, coastal, etc.) through direct removal,
tilling, hydrological interruption, or other means'?
d) Interfere substantially with the movement of any native 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'?
c) Conflict with any local policies or ordinances protecting biological
resources, such as a tree preservanon policy tlr ordinance?
1) Conflict with the provisions of an adopted Habitat Conservation
Plan. Nalural Community Conservation Plan, or other approved local.
regional, or state habitat conservation plan?
V. CI;LTI'RAi. RESOURCES: - Would the project:
a) Cause a substantial adverse change in the significance ()fa
historical resource as defined in § 15064.5?
b) Cause a substantial adverse change in the sig,fificance oran
archaeological resource pursuant to § 15064.5?
c) Directly or indirectly destro.,,' a unique paleontological resource or
site or unique geologic feature?
ti) Disturb any human remains, including those interred outside of
fi~rmal cemeteries'?
.Nb Substantial
Change From
Pre~,ious
.4nahwis
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City of 7'ustin · Page 9
2. Environmental Checklist
VI. GEOLOGY AND SOILS: - \Vould the project:
a) Expose people or structures to potential substantial adverse efl~cts.
including the risk of loss, in ur3.', or death invoMng:
il)
Rupture of a known earthquake fault, as delineated on the
most recent Alquist-Priolo Earthquake Faull Zoning Map
issued by the State Geologist for the area or based on other
substantial evidence ora known fault'? Relier to DMsion of
Mines and Geology Special Publication 42.
ii) Strong seismic ground shaking'?
iii) Seismic-related ground failure, including lique/hction?
iv) Landslides'.'
b) Result in substantial soil erosion or the loss oftopsoil?
c) Be located on a geologic unit or soil that is unstable, or that would
become unstable as a resull 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 18-I-B of'the
Uni form Building (';ode ('1994). creating substantial risks to lift: or
properly?
e) l lave soils incapable of adequately supporting the usc of septic
tanks or ahernative waste waler disposal systems where sewers are not
available for the disposal of waste water?
VII.IIAZARDS ANI) HAZARI)O{'S .MATERIALS:
Would the pro. ject:
a) Create a significant hazard to thc public or the environment
through the routine transport, usc, or disposal of hazardous materials'?
b) Create a significant hazard to the public or the environment
through reasonably fi~reseeablc upset and accident conditions invoMng
· )
the release of hazardous materials into the em ~ronment.
c) Emit hazardous emissions or handle hazardous or acutely
hazardous materials, substances, or waste within one-quarter mile of an
existing or proposed school?
ti) Be located on a sile which is included on a list of hazardous
materials sites compiled pursuant to Government Code Section 65962.5
and. as a result, would il create a significant hazard to the public or the
environment?
e) For a project located within an airport land use plan or. where such
a plan has not been adopted, within two miles ora public airport or
public use airport, would the project result in a safety hazard for people
residing or working in thc project area'? -'
New More .Vo Substantial
Significant Severe Change l"rom
Impact Impact.~ Previous
__ ,lnal)'sis ._
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City of Tustin · Page 1 0
2. Environmental Checklist
For a project within the vicinity ora private airstrip, would the
prqject result in a safety hazard for people residing or working in the
prqject area'?
g) Impair implementation of or physically interfere with an adopted
emergency response plan or emergency' evacuation plan?
h) Expose people or structures to a significant risk of loss, injury or
death involving wildland fires, including where wildlands are adjacent
lo urbanized areas or where residences are intermixed with wildlands?
VIII. HYDROLOGY AND WATER QUALITY: · Would the
prqject:
a) Violate any water quality standards or waste discharge
requirements?
b) Substantially deplete groundwater supplies or interfere
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 pre-existing nearby wells would drop
to a level which would not support existing land uses or planned uses
tbr which permits have been grantedl?
c) Substantially alter the existing drainage pattern of the site or area.
including through the alteration of thc course of a stream or river, Jn a
manner which would result in substantial erosion or sihalion on- or off-
site'?
d) Substantially alter Ihe existing drainage pattern of the site or area.
including through the alteration of the course ora stream or river, or
substantially' increase the rate or amount of surface runoff in a manner
which would result in Ilooding on- or off-sile?
e) Create or contribute runoff water which would exceed the capacity
of existing or planned stormwatcr drainage systems or provide
substantial additional sources of polluted runoft?
f) Otherwise substantially degrade water quality?
g) Place housing within a 100-year flood hazard area as mapped on a
federal Flood Hazard Boundary or l:lood Insurance Rate Map or other
tlood hazard delineation map'?
h) Place within a lO0-year flood hazard area structures which xxould
impede or redirect flood tlows?
i) Expose people or structures to a significant risk of loss, in. iuD' or
death invoMng flooding as a result of the failure ora levee or dam'?
j) Inundation by seiche, tsunami, or mudflow?
A'e~' More
Significant Severe
Impact Impacts
,Vo Substantial
Change l"rom
Pre~'ious
AnalvMs
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City of Tustin · Page 1 1
2. Environmental Checklist
IX. LAND USE AND PLANNING Would thc project:
a) Physically divide an established conununity?
b) Conflict with any applicable land use plan, policy, or regulation of
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 tlr mitigating an
environmental efl'ect?
c) Conflict with any applicable habitat conservation plan or natural
community conservation plan'?
X. MINERAL RESOURCES-- Would the project:
a) Result in the loss of availability of a known mineral resource that
would be of value to the region and the residents of the state'.'
b) Result in the loss ofavailability ora locally-important nfincral
resource recovery site delineated on a local general plan, specific plan
or other land use plan?
XI. NOISE -- Would the project result in:
a) Exposure of persons to or generation of noise levels in excess of
standards established in the local general plan tlr noise ordinance, tlr
applicable standards of other agencies?
b) Exposure o£persons to or generation of excessive groundborne
vibration or groundbome noise levels?
c) ..\ substantial permanent increase in ambient noise levels in the
project vicinity above levels existing without the project?
d) ..\ substantial temporary or periodic increase itl 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. where such
a plan has not been adopted, within txxo miles ora public airport or
public use airport, would the project expose people residing or working
in the project area to excessive noise levels?
1) For a project within the vicinity ora private airstrip, would thc
project expose people residing or working in the projecl area to excess
noise levels?
XII.POPUI.ATION AND HOUSING .- Would the project:
a) Induce substantial population growth in an area, either directly (for
exalnple, by proposing new homes and businesses) or indirectly ~ for
example, through extension of roads tlr other inti'astrucmrc)?
.Vew More
Significant Severe
hnpact lmpact~
No Substantial
Change From
Previous
Anal)'sis
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City of Tustin · Page 12
2. Environmental Checklist
b) Displace substantial numbers of existing housing, necessitating the
construction of replacement housing elsewhere?
c) Displace substantial numbers ofpeople, necessitating the
construction of replacement housing elsewhere?
XII1. PUBI,IC SERVICES
a) Would thc project result in substantial adverse physical impacts
associated with thc provision of new or physically allered governrnental
facilities, need fbr 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 an)' of the public services:
Fire protection?
Police prolection?
Schools'?
Parks?
Other public thcilities?
XIV. RECREATION-.
a) Would the project increase the use of existing neighborhood and
regional par'ks 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 require the
construction or expansion of recreational facilities which might have an
adverse physical effect on thc environment?
XV. TRANSPOI,ITATION/TRAFFIC - Would the project:
a) Cause an increase in traffic which is substantial in relation to the
existing traffic load and capacity of the street system (i.e. result in a
substantial increase in either the number of vehicle trips, the volume to
capaciD' ratio on roads, or congestion at intersections)'?
b) Exceed, either individually or cmnulatively, a level of service
standard established by the count}' congestion management agency tbr
designated roads or highways?
c) Result in a change in air traffic patterns, including either an
increase in traffic levels or a change in location that results in
substantial sat~'ty risks'?
d) Substantially increase hazards due to a design feature (e.g. sharp
curves or dangerous intersections) or incompatible uses (e.g., farm
equipment)?
e) Resuh in inadequate emergency access?
Result in inadequate parking capacity?
New More
Significant Severe
Impact Impacts
,Vo Substantial
Change l:"ro~n
Prc~,ious
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City of Tustin · Page 13
2. Environmental Checklist
g) Conflict with adopted policies, plans, or programs supporting
alternative transportation (e.g., bus turnouts, bicycle racks)'?
Significant Severe
lrnpact Impacts
No Substantial
Change From
?reviou$
XVI. L'TiI,ITIES AND SERVICE SYSTEMS -- Would the project:
a) Exceed wastewatcr treatment requirements of the applicable
Regional \Vater Quality Control Board?
b) Require or result in the construction ofnew water or 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 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 prqiect from
cxisling entitlements and resources, or are new or expanded
entnlements needed?
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e) Result in a determination by the wastewater treatment 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?
0 Be served by a landfill with sufficient permitled capacity to
accommodate the project's solid waste disposal needs'?
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g) Comply with federal, state, and local statules and regulations
related to solid waste?
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XVll. MANDATORY FINI)IN(';S OF SIGNIFICANCE
a) l.)ocs the prqject have the potential to degrade the quality ofthe
environment, substantially reduce the habitat ora fish or wildlife
species, cause a tish or wildlifi2 population to drop below self-
sustaining levels, threalen 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 prehistol2,.'?
b) Does the project have impacts that are individually limited, but
cumulatively' considerable? CCumulatively considerable" means that
the incremental effects of a pro. jeer are considerable when viewed in
connection with the eftiects of past projects, the effects of other current
prqjccts, and the etli:cts of probable future projects)?
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c) Does the projecl have environmental effects which will cause
substantial adverse effects on human beings, either directly or
indirectly?
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City of Tustin · Page 14
2. Environmental Checklist
2.4
REFERENCES
Reference
City of Tusfin General Plan. January 16, 2001.
City of Tustin l tousing l!lement Update, November 2001.
State Department of Finance, Population, and llousing Estimates, 1999.
Final Environmental Impact Statement'Environmcntal Impact Report (I:[S. EIR) for the Disposal and Reuse
of MCAS-Tustin (Program EIS:EIR for MCAS-'l'ustin), January 16. 2001, including Response to
Comments, Final Volume 2 and 3 of Final Environmental Impact Statement Environmental Impact Report
(EIS EIR) for the Disposal and Reuse of MCAg-Tustin.
City Council Staff Report. January 16, 200 I.
Marine Corps Air Station (MCAS) Tustin Specific Plar~Reuse Plan, Oclober 1996 and September 1998
Errata.
.\lasterplan Marine Corps Air Station Tustin. DON 1989.
City of Tustin · Page 15
2. Environmental Checklist
l'his page i.t intentionally Iqft blank.
City of Tustin · Page 16
3. Environmental Analysis
Thc previous Section 2.3 provided a checklist of environmental impacts. This section provides an evaluation of the
impact categories and questions contained in the checklist, and identifies mitigalion measures where applicable.
Mitigation measures identified in the Program EIS'EIR for MCAS-Tustin shall be implemented through adoption of
thc Specific Plan for MCAS-Tustin.
3. ~ AESTHETICS
a) Have a substantial adverse effect on a scenic vista?
b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and
historic buildings wilhin a state scenic highway?
Development anticipaled by the Housing Element L.'pdate v, ould be located m mostly urbanized areas or areas
that are planned to be urbanized that are not part of scenic vistas. No scenic vistas are located in the vicinity of
any proposed development locations, such as Old Town infill developments, lnfill developments identified in
Table H-6A and Figure I of the Housing Element Update. and potential residential development at the former
MCAS-Tusth~. Further. the City of Tusfin does not contain any Cit3- or County-designated scenic highways.
Therefore. implementation of the proposed project would not create significant impacts on scenic visla, scenic
resources, and scenic highway.
Mitigation Measures'Monitoring Required:
· No mitigation measures arc necessary.
e)
Sources: 'l'usti,~ City Code
'fustin General Plan
Housing Element Update
Program ElS F. 1R for MCAS-Tustin (Pages 4-81 to 4-87)
Substantially degrade the existing visual character or quality of the site and its surroundings?
The proposed project estimates up to 3,298 units for development. NineD' (90) percent of these housing units
would be constructed within thc Reuse ['lan area. As each component of the Reuse Plan is developed over 20-+
years, there would be visual contrast created as previously undeveloped land at the former MCAS-Tustm
converts to urban uses or existing structures are demolished. Thc visual quality of the project sites would be
improved through application of' the specific urban design features such as landscaping, as development occurs.
Mitigation Measure Vis-I of the Program EIS'EIR for MCAS-Tustin would provide measures to reduce the
potential visual impacts to a level of insignificance.
lnfill developments outside of the MCAS-Tustin Reuse Plan area would be developed in accordance with the
City's l.and Use Element and development standards and would not create a demonstrable negative aesthetic
efl~ct to the City's visual qualities. With the City's existing Design Review process that requires specific
findings for development compatibility ~ith the surroundings, including height and bulk of the building,
exterior materials and colors, landscaping, etc.. it is not anticipated that future thrill developments woukt create
an5' significant visual impacts.
No further mitigation measures would be required beyond those identified in the Program F. JS'EIR for MCAS-
Tt,stin. which are hereby incorporated by reference.
City of Tustin · Page 17
3. Environmental Analysis
d)
Mitigation Measures Monitoring Required:
· Vis-1 ol'Program EIS EIR for MCAS-Tustin.
An urban design plan shall be adopted to provide for distinct and cohesive architectural and landscape
design, ti:atures and treatments, and harmony with existing adjacent laudscape.
This shall be accomplished with adoption of the MC:\S-Tustin Specific Plan. which is discussed in the
Program EIS EIR.
Sources: Tustin (.'it3, Code
'l"ustin General Plan
ltousing Element Update
Program }'lis E IR for MCAS-Tustin (Pages 4-81 to 4-87)
Create a new source of substantial light or glare, which would adversely affect da.,,' or nighttime views in
the area':
New development in accordaucc with the City's Housing Element Update would new create sources of light
and glare such as exterior lighting, lighting of streets and v,'alkways, and interior liglning which cot, ld be visible
from the outside.
The development of housing units at the Ibrmer MCAS-Tustin would potentially increase light and glare to
surrounding areas, llowever, the development would not result in any impacts beyond those identified in the
Program ElS EIR for MCAS-'l'ustin. No further mitigation measures would bc required beyoud those identified
in the Program ElS. EIR for MCAS-Tustin. which are hereby incorporated by reference.
To minimize potential light and glare impacts for infill developments, future development would be required to
comply with Tustin's Secu,'ity Ordinance. In addition, the lights and glare shall be controlled through design
controls and building materials restrictions as part of thc City's existing Design Review process. [he Design
Review process requires specific findings to be made for development compalibility with its surroundings
including exterior illuminatiou.
Mitigation Measures 'Monitoring Required:
· Vis-1 of Program ElS 'l!lR for *iCAS-Tustu~.
An urban design plan shall be adopted to provide tbr distinct and cohesive architectural and laudscapc
design, features and treatments, and ha,'mony with the existing adjacent landscape.
]'his shall be accomplished with adoption of the MCAS-Tustin Specific Plan. wNch is discussed in the Program
ElS EIR.
Sources:
'l'ustin (.7it3' Code
Tustin General Plan
Housing Element l."pdate
Program EIS EIP, for MCAS-Tustin (Pages 441 to 4-,87)
3.2 AGRICULTURE RESOURCES
City of Tustin o Page 18
3. Environmental Analysis
a)
b)
Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as
shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the
California Resources Agency, tu non-agricultural use?
According to the Farmland Mapping and Monitoring Program, the City of 'rustin currently contains Prime
Farmland located at MCAS-Tustin. The implementation of the Reuse Plan would result in a significant adverse
effect of converting prime agricultural land to a variety of urban uses. Approximately 289 acres of Prime
Farmland would ultimately be developed with housing units. The Program lilS. EIR for MCAS-Tustin has
provided detailed analysis of the alternatives and potential mitigation measures and concluded that the impact is
unavoidable.
Other available vacant or underutilized land within the City identilied as potential land for residential
developments are not zoned or used for agricultural uses. Theretbre, no significant impacts to farmland
resources would result from the development ol'thesc infill lands.
Thc implementation of the Housing Element Update would potentially result in a significant impact of
converting agricuhural land to urban uses at the former MCAS-Tustin Reuse Plan area. However, the
implementation of the I lousing Element Update would not result in any impacts beyond those identified in the
Program EIS"EIR for MCAS-Tuslin. No further mitigation measures would be required.
Mitigation Measures Monitoring Required:
· No mitigation measures were determined to be feasible tbr MCAS-Tustin. A Statement of Overriding
Considerations is required.
Sources: Tustin City Code
Tustin General Plan
t'lousing Element Update
Program EISiEIR tbr MCAS-Tustin (Pages 4-109 to 4-113)
Conflicl with existing zoning for agricultural use, or a Williamson Act contract?
The City of Tustin General Plan does not include any land designated for agricultural use. Furthermore, there is
no land zoned solely for agricultural purposes or covered by a Williamson Act contract in the City. The
Williamson Act was adopted in 1965 and established a voluntary farmland conservation program which restricts
contracted land to agricultural and or open space uses tbr at least ten years. Landowners who enroll their lands
would receive preikrential tax treatment based on the actual use of thc land I'or agricultural purposes, as opposed
to the unrestricted market value. The previous imerim agricultural uses at MCAS-Tustin have been
discontinued since preparation ol' thc Program EIS'EIR for MCAS-Tustin were not nor are infill developments
areas within the City under a Williamson Act contract.
Mitigation Measures/Monitoring Required:
· No mitigation measures arc necessary.
Sources: Tustin General Plan
llousing Element Update
Program EIS EIR tbr MCAS-'fustin (Pages 4-109 to 4-113 }
City of Tusiin · Page 19
3. Environmental Analysis
c)
3.3
a)
b)
c)
Involve other changes in the existing environment which, due to their location or nature, could result in
conversiun of Farmland, to non-agricultural use?
'['he City o£Tustin General Plan does not contain any land designated for agricultural use. Furthermore, there is
no land zoned solely for agricultural purposes. Except for those impacts identified under Section 3.2 Ca) above.
there are no evidence or changes in thc existing environment which, Glue to their location or nature, could result
in conversion of Farmland, to non-agricultural usc.
Mitigation Measures Monitoring Required:
· No mitigation measures are required.
Sources: Tustin City (?ode
'l'ustin General Plan
Housing Element L'pdate
Program ElS 'EI R for MC..\S-Tustin (Pages 4-109 to 4-113)
AIR QUALITY
Conflicl with or obstruct implementation of the applicable air quality plan?
Violate any air quality standard or contribute substantially to an existing or projected air quality
violation?
Result in a cumulatively considerable net increase of an)' criteria pollutaut fi~r which the project region is
non-attainment under an applicable federal or state ambient air quality standard (including releasing
emissions that exceed quantilative Ihresholds for ozone precursors)?
d) Expose sensitive receptors to substantial pollutant concentrations?
The Housing Element Update idcntifies an assigned ihir share growth in the City tbr 3,298 new housing units
through 2005. According to the South Coast Air Quality Management District C'EQA ..\ir Quality I landbook,
the air quality impacts of thc development of 3,298 dwelling units would exceed the District's threshold of
significance. New development would generate pollutant emissions duc to new vehicle trips, usc of
construction equipment, and off-site power and natural gas generation. During thc construction phases of
individual development projects, construction vehicles and activities would also generate emissions. Air
pollutant emissions associated with the project could nccur over the short-term for demolition, site preparation
and construction activities to support thc proposed land usc. in addition, emissions could result from the long-
term operation of the completed development.
· Short-'l'erin Construction-Related Impacts
Short-term emissions are those occurring during the conslruction phases of individual developments in tile
City. Air quality impacts ma,,,' occur during the site preparation and construction activities required to
prepare the proposed on-site land use. Major sources of emissions during this phase include exhaust
emissions generated during demolition of an existing structure, site preparation and subsequent structure
erection and fugitive dust generated as a result of soil disturbances during excavation activities.
The Program ElS EIR tbr MCAS-Tustin identifies impacts that would result from tile construction of the
housing units at the Reuse Plan area. To minimize these impacts, future development projects would be
required to comply with specific construction control measures identified in mitigation measure AQ-I and
AQ-2. ff not already required by the SCAQMD Rule 403 related to wind entrainment of fugttivc dust.
These mitigation measures are incorporated herein.
City of Tustin . Page 20
3. Environmental Analysis
For infill developments, the City will require compliance with AQMD Rule 403 related to air quali~,
cortstruction control measures and the City's standard construction control measures (i.e. controlling
construction parking to minimize traffic interfi:rence, providing temporary traffic control during
construction actMties to improve traffic flow, etc.). This would reduce air quality construction-related
impacts to a less than significant level.
· Long-Term Air Quality impacts
i.ong-term air quality impacts are those associated with the emissions produced i?om project-generated
vehicle trips as well as from stationary, sources related to the use of natural gas for heating and use of
electricity for lighting and ventilation. The net increase in new development anticipated by the llousing
Element Update is related to a change in the number of housing units and additional vehicle trips.
l.ong-tcrm emissions from mobile (vehicular) and stationary sources within the Reuse Plan area are
identified in the Program EIS EIR for MCAS-Tustin as significant and unavoidable. Mitigation measure
AQ-4 related to individual development's Transportation Demand Management (TDM) plan would reduce
the impact, but there are no feasible mitigation measures that will reduce the impact to a less-than-
significant level.
Long-term emissions resulting ti'om infill developments is insignificant if developed indMdually but could
be significant cumulatively. These impacts shall be reduced through urban design planning as suggested in
the CEQA Air Quality Handbook prepared by the South Coast Air Quality Management District (i.e.
incorporation of bus turnouts, pedestrian friendly site design, provision for bike lanes, etc.). Through the
City's Design Review process, these design measures shall be determined ou a case-by-case basis as
developments are proposed. Compliance with these measures would reduce impacts related to long-term
emission to a less than significant level.
· Consistency with South Coast Air Basin (SCAB) Air Quality Management Plan (AQMP)
Although the City's measures related to air quality fnr infill development has been identified in the AQMP
prepared by the SCAQMD, the development of the MCAS-Tustin Reuse Plan was not included by
SCAQMD in the modeling assumptions for the 1994 or 1997 AQMP. The 2000 AQMP has not been
approved. SCAQMI) will need to include the MCAS-Tustin Reuse Plan in the 2000 AQMP and future
AQMPs.
In summary, development anticipated by the Ilousing Element Update is in compliance with the growth
projections in the City's Land Use and Circulation Elements. The implementation of the Housing Element
Update would result in both short-term and long-term impacts. These impacts include construction-related
impacts associated with clearing and grading of the site and construction of building and infrastructure and
operational impacts atu'ibutable to air emissions from vehicular travel and generation of air contaminants by the
development. These impacts ~ould not result beyond those identified in the Program EIS'EIR for MCAS-
Tustin. No further mitigation measures would be required beyond those identified in the Program ElS Ell>, for
MCAS-Tustin.
Infill developments would be evaluated on an individual basis when the specific developmeut is proposed.
Such development must comply with the City's Design Review process and such will reduce potential impacts
to a less than significant level. In additinn, under CEQA, the degree of specificity required in an environmental
review corresponds to the degree of specificity involved in the project (14 C.C.R. § 15146). Thus. an
cm'ironmental analysis of the adoption nfa general plan element will necessarily be much more general than an
environmental review on a construction project.
City of Tusrin · Page 21
3. Environmental Analysis
Mitigation Measures Monitoring Required:
Mitigation measures have been adopted by the Tu.stin City Council in the Program ElS EIR tbr MCAS-Tustin.
Mitigation Measure AQ-I, AQ-2, and AQ-4 applies to the implementation of housing element update and will be
required to minimize significant construction air quali~: impacts, but would not reduce the cumulative impact below
a level of significance. Program Mitigation Measure AQ-4 was required to reduce operations emissions at non-
'I'DM projects, llowever. Program EIS'EIR also concluded that Reuse Plan related operational air quality impacts
were significant and impossible to fully mitigate. A Statement of Overriding Consideration for the Program
EIS 'EIR for MCAS-Tustin has been adopted by the Tustin City Council on January 16, 2001.
· AQ-I - If determined feasible and appropriate on a project-by-project basis, tile City of Tustin and the
City of Irvine, as applicable, shall require individual development projects to implement one tlr more
of the following control measures, if not already required by the SCAQMD under Rule 403:
Apply water twice daily, or chemical soil stabilizers according to manufacturers' specifications, to
all unpaved parking tlr staging areas or unpaved road surfaces at all actively disturbed sites.
l)evelop a construction traffic management plan that includes, but is not limited to. rerouting
construction trucks off congested streets, consolidating truck deliveries, and providing dedicated
turn lanes fbr movement of construction trucks and equipment onsite anti offsite.
Use electricity from power poles rather than temporary diesel or gasoline powered generators.
Reduce traffic speeds on all unpaved roads to 15 mph or less.
Pave construction roads that have a traffic volume of more than 50 daily trips by construction
equipment or 150 total daily trips for all vehicles.
Apply approved chemical soil stabilizers according to manufacturers' specificauons to all inactive
construction areas (previously graded areas inactive for tbur days or more).
Replace ground cover in disturbed areas as quickly as possible.
Enclose. cover, water ~wice daily, or apply approved soil binders according to manufacturers'
specifications, to exposed piles of gravel, sand, tlr dirt.
Cover all trucks hauling dirt, sand, soft, or other loose materials, and maintain at least two ti:et of
t?eeboard (i.e., minimum vertical distance between top of the load and top of the trailer).
Sweep streets at tile end of the day if visible soil material is carried over to adjacent roads (use
water sweepers with reclaimed water when t~asible).
Install wheel washers where vehicles enter and exit utlpaved roads onto paved roads, or wash off
trucks and an,,.' equipment leaving thc site each trip.
· AQ-2 -- Unless determined by the City of' Tustm to be infeasible on a project-by-project basis due to
unique project characteristics, thc Cit.,,' of Tustin shall require thc project proponent to use Iow VOC
architectural coatings for all interior and exterior painting operations.
· AQ-4 - Thc City of Tustin shall require the prqject proponent to utilize applicable transportation
management measures to be implemented, as determined appropriate tlr feasible on a case-by-case
basis, as follows:
Rcschedule truck deliveries and pickups for off-peak hours.
Implement lunch shuttle service from a worksite(s) to food establishments.
Implement compressed workweek schedules where weekly work hours are compressed into fewer
than five days, such as 9 80, 4 40, or 3 36.
Provide on-site child care and after-school thcilities or contribute to off:site developments within
walking distance.
Provide on-site employee services such as cafeterias, banks, etc.
City of Tustin · Page 22
3. Environmental Analysis
e)
Implement a pricing structure for single-occupancy employee parking, and"or provide discounts to
ride sharers.
Construct off-site pedestrian fhcility improvements such as overpasses and wider sidewalks.
Include retail services within or adjacent to residential subdivisions.
Provide shuttles to major rail transit centers or multi-modal stations.
Contribute to regional transit systems (c.g., right-ol:way, capital improvements, etc.).
Synchronize traffic lights on streets impacted by development.
Construct, conn'ibutc, or dedicate land for the provision of off-site bicycle trails linking the facility
to designated bicycle commuting routes.
Include residential units within a commercial development.
Provide off-site bicycle facility improvements, such as bicycle trails linking the facility to
designated bicycle commuting routes, or on-site improvements, such as bicycle paths.
Include bicycle-parking facilities such as bicycle lockers.
Include showers for bicycling and pedestrian employees' use.
Construct on-site pedestrian facility improvements, such as building access which is physically
separated from street and parking lot traffm, and walk paths.
· No mitigation measures are necessary for infill developments
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program EIS 'EIR for MCAS-Tustin (Pages 4-207 to 4-224)
Create objectionable odors affecting a substantial number of people':
Odors are one of thc most obvious forms of air pollution to the general public. Odors can present significant
problems for both thc source and the surrounding community. Although oflbnsivc odors seldom cause physical
harm, they can cause agitation, anger, and concern to the general public. Most people determine an odor to be
offensive (objectionable) if it is sensed longer than the duration of a human breath, typically 2 to 5 seconds.
Thc potential odors associated with thc project are from the application of asphalt and paint during construction
periods. These odors, ii' perceptible, are common in the environment and would be of very limited duration. In
addition, duc to their nature as residential housing units, no obnoxious odor would result from development of
housing units identified in the l lousing Element Update.
Mitigation Measures:Monitoring Required:
· No mitigation measm'es are necessary.
Sources: 'l'ustin City Code
Tustin General Plan
Housing Element Update
Program EIS I£1R tbr MCAS-Tustin
3.4 BIOLOGICAL RESOURCES
a)
itave a substantial adverse effect, either directly or 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 ur U.S. Fish and Wildlife Service?
h)
Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified
in local or regional plans, policies, regulations, or by the California Department of Fish and Game or {'.S.
Fish and Wildlife Service':
City of Tustin · Page 23
3. Environmental Analysis
d)
e)
Interfere substantially with the movement of an)' native resident or migratory fish or wildlife species or
with established native resident or migralory wildlife corridors, or impede the use of native wildlife
nursery sites?
Conflict with an)' local policies nr ordinances protecting biological resources, such as a tree preservation
policy or ordinance?
Conflict with the provisions of an adopted llabitat Conservation Plan, Natural Community Conservation
Plan. or other approved local, regional or state habitat conservation plan?
Biological resources include plant and animal species and the habitats or communities within which they occur.
The implementation of the IIousing Element Update consists of development within MCAS-'l-ustin and infill
areas outside lhc MCAS-Tustin.
Impacts associated with Biological Resources within the MCAS-Tustin area would occur at the construction
phase for implementing the Reuse Plan development. In general, impacts can be summarized as follows:
Vegetation
Vegetation in the Reuse Plan can generally be categorized as cultivated fields or non-native grassland.
There are only indMdual remnants of native plant species. The agricultural field on the Air Station are
regularly cuhivated with row crops. Because of the agricultural and historic military uses. the cuhivatcd
fields and landscaped areas do not provide suitable habitat Ibr rare plant species known from the region.
As such no mitigation measure related to vegetation is necessary.
Wildlife. Sensitive, Threatened, and Endangered Wildlit~' Species
Agricuhural, residential, and industrial land uses surrounding the MCAS-Tustin and other vacant land area
typically' would limit a site's value as wildlife habitat. The Program EIS"EIR l'br MCAS-Tustin identified
Southwestern Po~d Turtle, "species of special concern," within the MCAS boundary; however, based upon
the analysis in the Program EIS'EIR, thc sighting was found within areas identified tbr development of
commercial and commercial businesses. Therclbre, no impact to southwestern pond turtle habitat would
result from the implementation of thc Housing Element Update at the MCAS-Tustin.
Infill developments identified in Table H-6A of the llousing Element Update would occur in the urbanized area
of the (7it3'. Thc properties are not located on any riparian habitat or other sensitive natural community.
Therefore, it is not anticipated that the sites would contain endangered wildlife, protected riparian habitats, or
any other biological resources.
Mitigation Measures"Monitoring Required:
· No mitigation measures are necessa,'y.
Sources:
Tustin City (,'ode
'fustin General Plan
llousing Element Update
Program ElS 'EIR tbr MCAS-Tustin (Pages 4-103 to 4-107)
City of Tustin · Page 24
3. Environmental Analysis
c)
Have a substantial adverse effect on federally 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?
Thc development of housing units within the MCAS-Tustin Reuse Plan woukl have impacts to xxetlands. The
Reuse Plan is situated in the Tustin Plain, which is underlain by the Irvine groundwater basin. The site is
situated in historic marshland which was filled over 60 years ago for cultivation. The Peters Canyon Channel,
an unlined drainage channel, traverses the MCAS--fustin area. Based on the 1999 determination, the Reuse
Plan contains and estimated total of 29.0 acres of jurisdictional waters. Approximately 12.8 acres of
jurisdictional v, aters would be indirectly impacted by channel improvements by Orange County Flood Control
District (OCFCD). Another 16.2 acres of jurisdictional waters, of which 2.4 acres are classified as vegetated or
seasonal wetlands would be directly impacted. The Program EIS..'EIR lbr MCAS-Tustin has identified
mitigation measures to reduce impacts associated with jurisdictional waters and wetlands to a level of
insignificance. These mitigation measures are incorporated herein.
Infill development sites identified in Table H-6A of the Housing Element Update are not located on ikdcrally
protected wetlands. As such. no impact would result from thc development of the sites.
In summary, the implementation of the I lousing F. lemenl Update, particularly' the development at the MCAS-
Tustin Reuse Plan area. would potentially create impacts to vegetated and seasonal wetlands. The Program
ElS EIR for 5,1CAS-Tustin identifies wetland impact mitigation. There would not be any additional impacts
beyond those identified in the Program FAS'EIR for MCAS-lustin. No further mitigation measures would be
required beyond those identified in thc Program ElS EIR for MCAS-Tustin.
Mitigation Measures Moniloring Required:
·
Sources:
Bio-1. Development project proponent affecting .jurisdictional waters of the U.S. or vegetated wetlands
shall be required to obtain Section 404. Section 1601. and other necessary permits prior to grading
invoMng wetlands. A replacement ratio for affected wetland resources shall be determined in consultation
with regulator3' agencies as part of permitting process. The actions proposed on Peters Canyon Channel
shall be mitigated by thc Orange Count)' Flood Control District who is the project proponent for flood
control ~mprovement.
No mitigation measures are necessary for infill developments.
Tustin City Code
Tustin General Plan
IIousing Element Update
Program ElS EIR for MCAS-Tustin (Pages 4-103 to 4-107 ~
Cause a substantial adverse change in the significance of a historical resource as defined in {}15064.5?
Section 10564.5 defines historic resources as resources listed or determined to be eligible for listing by the State
Historical Resources Commission. a local register of historical resources, or the lead agency. Generally a
resource is considered to be "historicall)' significant," if it meets one of the following criteria:
i. Is associated w~th events that have made a significant contribution to the broad patterns of
Califo,'nia's history anti cultural heritage;
City of 7hslin · Page 25
3. Environmental Analysis
b)
ii. Is associated with the lives of persons important in our pasl;
111.
Embodies the distinctive characteristics of a type, period, region, or method of construction, or
represents the work of an important creative individual, or possesses high artistic values; or
ix'. llas yielded, or may be likely to yield, intbrmauon important in prehistory or histor)' (§ 15064.5)
Approximately ninct)' (90) percent of the construction of residential units described in the Flousing Element
Update woukt occur at the former MCAS-'Fustin area. However, none of the housing will be built on or
adjacent to historic sItes at MCAS-Tustin.
lnfill developments may occur within the City's designated Cultural Resources Overlay District. Development
within this district is required to comply with development standards in the Zoning (.'ode, including a Design
Review process in the District. The Design Review process requires specific findings to be made to ensure the
proposed design is compatible and consistent with the City's Cultural Resources District design criteria and
development standards. Compliance with the City"s Design Review and Certificate of Appropriateness
procedures would reduce potential impacts to a level of insignificance.
In summary, the implementation of lhe llousing Element Update would not result in potential impacts to thc
historical blimp hangars and eligible historic districts at MCAS-Tustin.
Mitigation Measures'Monitoring Required:
* No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Ilousing Element L"pdate
Program ElS I';IR for MCAS-Tusfin (Pages 4-93 to 4-99}
Cause a substantial adverse change in the significance of an archaeological resource pursuant to §
15064.5?
Impacts to archeological sites are considered significant only if the sites themselves are deemed significant.
The majority of tile housing development identified in the Housing Element Update would be located in the
M(?AS-Tustin Reuse Plan area. To determine if there are any archeological sites located in the MCAS-Tustin
Reuse Plan area, va,',ous surveys were condt,cted. In summary, one archeological site was recorded but it is
believed to have been destroyed. The State Historic Preservation Oftke (SIIPO) has concurred with the
assessment that the site has been adequately surveyed and the site has been considered to be insignificant due to
its lack of integrity. 'l'heretbrc, there would not be an adverse affect on the one known archeological resource m
the Reuse Plan. Grading activities at the Reuse Plan, however, ma)' uncover buried archeological resources, in
this case, appropriate mitigation measures were identified in the Program EIS. 1.:IR ibr MCAS-Tustiu.
lnfill devclopmems outside of the Reuse Plan are located in the urbanized areas of the (.'it)'. The City's General
Plan does not identity the iufill sites as sensitive areas and there are no known archeological resources exist in
the thrill sites. However, through City's standard procedures anti policies, if buried archeological resources arc
found, a certified archeologists would need to be retained to assess the site significance and perlbrm appropriate
miligation.
The implementation of I lousing Element L'pdate would not result in any impacts beyond those identified in tile
Program EIS EIR for MCAS-Tusti,1. No further mitigation measures would be required beyond those identified
in the Program ElS.TAR for MCAS-'I'usun.
City ~ Tustin · Page 26
3. Environmental Analysis
Mitigation Measures Monitoring Required:
· Arch-2 - Prior to issuance of grading permits, the City of Tustin shall require the project proponent to
retain, as approprime, a county-certified archaeologist. If buried resources are found during grading within
the reuse plan area, a qualified archaeologist would need to assess the site significance and perform the
appropriate mitigation. The Native Amertcan viewpoint shall be considered during this process. ]'his
could include testing or data recovery. Native American consultation shall also be initiated during this
process.
· No mitigation measures are necessary for refill developments.
Sources:
Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS EIR for MCAS-Tustin (Pages 4-93 to 4-99)
c) I)irectly or indireclly destro,',' a unique paleontological resource or site or unique geologic feature?
Development anticipated by the housing element would be located mostly in the MCAS-Tustin Reuse Plan area.
Grading in thc Reuse Plan may destro3' geological deposits within which unique paleontological resources are
buried. In anticipation of possible impacts to resources, a Paleontological Resources Management Plan (PILMP)
has been prepared which would apply to any type of grading:development activity at the Reuse Plan. The
Program ElS EIR for MCAS-Tustin has incorporated mitigation measures to reduce potential impacts to less
than significant levels by requiring certified paleontologists to be retained to assess the site significance of
archeological resources and conduct salvage excavation of unique paleontological resources, if they are found.
Infill developments would be located in thc urbanized areas. The City's General Plan does not identify the infill
sites as sensitive areas and there are no known paleontological resources exist in the infill sites, tlowever,
through City's standard procedures and policies, if buried paleontological resources are ibund, a certified
paleontologist would need to be retained to assess thc site significance and perform appropriate mitigation.
The implementation of I lousing Element Update would not result in any impacts beyond those identified in the
Program EIS EIR for MCAS-Tustin. No further mitigation measures would be required beyond those identified
in the Program EIS:EIR for MCAS-Tustin.
Mitigation Measures.'Monitoring Required:
· Palco-1 - The City of Tustin shall each require the project proponent to comply with the requirements
established in a PRMP prepared for the site. which details the methods to be used for surveillance of
construction grading, assessing finds, and actions to be taken in thc event that unique paleonlok)gical
resources are discovered during construction.
· Palco-2 - Prior to the issuance of a grading permit, the project proponent shall provide written evidence to
the (7it.,,' ofTustin, that a coumy-certified paleontologisl has been retained to conduct salvage excavation of
unique paleontological resources if they are found.
· No mitigation measures are necessary fi~r infill developments.
Sources: Tustin City Code
'l'ustin General Plan
Housing Element Update
Program ElS EIR tbr MCAS-Tustin (Pages 4-93 to 4-99)
City of Tustin · Page 27
3. Environmental Analysis
d) Disturb an)' human remains, including those interred outside of formal cemeteries?
a)
Due to past agricultural uses at the Reuse Plan and current urbanized character of thc City, it is considered
highly unlikely that any human remains would be uncovered duc to thc proposed project. For development in
the Reuse Plan. the Program I~IS. FIR for MCAS-Tustin has incorporated mitigation measures to reduce
potential impacts to less than significant levels by requiring a certified archeologist to be retained to assess thc
site significance ofarcheological resources and conduct sah'age excavation if an,.' human remains are found.
Infill developments would be located in the urbanized areas. Although unlikely, grading of these sties ma5'
uncover human remains. If an5' human remains are fi)und during grading, a qualified archaeologist would be
required to assess the site stgnificance and perform the appropriate mitigation.
The implementation of the tit)using Element Update would not result in any impacts bey'ond those identified in
the Program ElS EIR lbr MCAS-Tustin. No further mitigation measures would be required beyond those
identified in the Program ElS EIR for MCAS-Tustin.
Mitigation Measures Monitoring Required:
· Arch-2 - Prior to issuance of grading permits, the City of 'fustin shall require the project proponent to
retain, as appropriate, a county-certified archaeologist. If'buried resources are found during gradiug within
the reuse plan area. a qualified archaeologist would need to assess the site significance and pertbrm the
appropriate mitigation. The Native American viewpoint shall be considered during this process. This
could include testing or data recovery. Native American consultation shall also be initiated during this
process.
· No mitigation measures are necessary for infill developments.
Sources: Tustin City Cod
Tustin General Plan
l lousing Element Update
Program EIS EIR for MCAS-Tustin (Pages 4-93 to 4-99)
GEOLOGY AND SOILS
Expose people or structures to potential substantial adverse effects, including the risk of loss, injury, or
death invoh'iog:
Rupture of a known earthquake fault, as delineated on the most recent Alquist-Prioh)
Earthquake Fault Zoning map, issued by the State Geologist for the area or based on other
substantial evidence of a known fault? Refer to l)ivision of Mines and Geology Special
Publication 42.
il. Strong seismic ground shaking?
iii. Seismic-related ground failure, including liquefaction?
ix'. Landslides?
Geotcchnical hazards that may affect the developmeut of housing units within the Reuse Plan area anti Inlill
areas are either related to seismic events or non-seismic events. Geoteclmical hazards not related to earthquake
actMty include local seulement, regional subsidence, expansive soils, construction-related slope instability'.
erosion, landslides, and mudflows. Seismic hazards include surface dcthuh displacement, h~gh-intensity ground
City of Tustin . Page 28
3. Environmental Analysis
b)
shaking, ground thilure, ground lurching, tsunami and seiches, and tlooding attributable to dam failure after an
earthquake.
According to thc Cit3"s General Plan, there are several unnamed ihults within 10 to 45 miles of the City,
mapped by the DMsion of Mines and Geology. The fault with the most potential for actMty is the El Modena
Fault; however, it and all other faults are considered inactive. The City does not lie within the bounds of an
"Earthquake Fault Zone." as defined by the State of California in the Alquist-Priolo Earthquake Fault Zoning
Act.
There are a number of faults in the southern California area which are considered active and which could have
an effect on the site in the form of moderate to strong ground shaking, should they be the source of an
earthquake. -l'hese include, but are not limited to: the San Andreas fault, the San Jacinto fault, the Whiuier-
Elsinore fault, thc Chino fault and the Nex~'porl-lnglewood thult zone. The possibility of ground acceleration or
shaking at the site may be considered as approximately similar to the southern Calilbrnia region as a whole.
The Newport-lngle~ood Fault (about 10 miles southwest of the City) would likely generate the most severe site
ground motions. The Newport-lnglewood Fault would be capable of a maximum credible magnitude of 7.1.
Estimated peak horizonlal ground accelerations resulting fi'om the above-stated maximum credible earthquakes
on the Ncwpon-lnglewood Fault are on the order of 0.43g. The duration of strong motion on the Newpon-
lnglewood Fault would be about 26 seconds for a 7.1 magnitude earthquake and about II seconds for a
maximum probable earthquake of 5.9 magnitude.
Since any areas in the City would be subject to strong ground shaking during major earthquakes, similar to
other areas in California, any development that occurs would be required by City Ordinance to comply with
seismic design parameters contained in the most current version of the Unifbrm Building Code for seismic zone
4, Title 24 of the Califbrnia Building Code, and the standards of the Structural Engineers Association of
California. Compliance with these existing building standards is considered the best possible means of reducing
seismic hazards. Therefore, no significant impacts are anticipated as a result of implementation of the Housing
F. lement Update.
Mitigation Measures Monitoring Required:
· No mitigation measures arc necessary.
Sources: 'l'ustin City Code
Tustin General Plan
I lousing Element Update
Program EIS EIR for MCAS-Tustin (Pages 4-115 to 4-121 )
Result in substantial soil erosion or the loss of topsoil?
I)evelopments anticipated by the housing element are mostly located in the MCAS-Tustin Reuse Plan area. The
Program ElS EIR tbr MCAS-Tustin identified the soils in the Reuse Plan area as expansive, unstable, and
subject to erosion. Grading within the Reuse Plan could result in increased erosion rates, especially if grading
is conducted in dr3', but windy, summer weather. Such activities are required to comply with the existing City
regulations related to erosion and runoff control. Once an individual site is graded and landscaping vegetation
is established, the erosion potential of the soils would be diminished to a level of insignificance. Thcretbre, the
impact is considered less than significant.
Infill areas outside the MCAS-Tustin P, ct. se Plan are relatively flat and surfhce runoff would be sinfilarly
controlled by existing City regulations. Future developments would also be required to comply with Best
Management Practices and other City regulations to minimize potential erosion and sedimentation impacts into
City of Tuslin · Page 29
3. Environmental Analysis
c)
d)
Ci~' storm drains. In addition, development sites are required by City Code to be improved with landscaping
which would reduce the potential for on-site erosion, after construction. No significant impacts arc anticipated.
Mitigation Measures Monitoring Required:
· No mitigation measures arc necessary.
Sources: Tustin City (';ode
Tustin General Plan
llousing Element Update
Program EIS.~EIR for MCAS-Tustin (Pages 4-I 15 to 4-121)
Be located on a geologic unit or suil that is unstable, or that would become unstable as a result of thc
project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or
collapse':
Liquethction describes a phenomenon in which cyclic stresses, produced by earthquake induced ground motion,
create excess pore pressures in relatively cohesionless soils. This occurs in areas where the ground water table
is within 50 feet of the ground surthce. According to thc City's General Plan. soils in Tustin are more
susceptible to liquefaction in the southern portion of the City. The area north of the fi'eeway is identified as
being moderately susceptible. Soils in thc foothill areas are generally not susceptible to liquefaction due to the
more solid underlying geologic structure and lower water table.
The MC'AS-Tustin Reuse Plan area has a high probability of liquethction in the event of a major earthquake.
The Program EIS EIR Ibr MCAS-Tustin addresses potential impacts that may result fi-om liqueIhction, and
mitigation measures were incorporated to reduce the potential impacts to a level of less than significant. Areas
within the Reuse Plan have also been determined by the State geologist to be within a liquefaction hazard zone.
Compliance with existing State and local regulations and standards and established engineering procedures and
techniques would provide adequate protection from geotechnical hazards. As a result, the potential impact
would be less than significant.
Similar to the P, euse Plan. infill developments outside the Reuse Plan would also be required to comply with
existing State and local regulations and standards, and the State Department of Conservation, Mines and
Geology DMsion's established engineering procedures anti techniques, to identit3' necessary improvements to
ensure long-term geotechnical stability.
Mitigation Measures .'Monitoring Required:
· No mitigation measures are necessary.
Sources: 'rustin City (.;ode
Tustin General Plan
}lousing Element Update
Program EIS.'EIR for MCAS-'l'ustin (,Pages 4-115 to 4-121)
Be located on expansive soil. as defined in Table 18-I-B of the l.;nifl~rm Building Code (1994), creating
substantial risks to life or property?
Developments antic}pined by the }lousing Element Update consist of development in the MCAS-Tustin Reuse
Plan area and Infill areas outside the Reuse Plan. The Program EIS.'EIR tbr MCAS-Tustm noted that the
MCAS-Tustin Reuse Plan area lies within an area of high to very high expansMty of soils, lnfill areas outside
the Reuse Plan have not been identified as areas with expansive soils.
City of Tustin · Page 30
3. Environmental Analysis
e)
3.7
b)
As part of the City's development review, each development would be required to provide determination of the
expansion potential of on-sile soils and implement appropriate remedial measures in accordance with the City's
requh'ements. The measures might include the removal of clay-rich soils and replacement with specific
thickness of non-expansive granular soil beneath thc structures, concrete slabs, and footings. Mixing during
grading of localized expansive soils with granular non-expansive soils could also be used to reduce this hazard.
Posl-construcdon drainage control lo keep water from collecting under or adjacent to structures might also be
used to reduce the hazard. Compliance with State and local regulations and standards, and established
engineering procedures would not result in an unacceptable potential risk of loss, injury, or death, impacts
related to expansive soils would be less than significant.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS EIR for MCAS-Tustin (Pages 4-115 to 4-121)
Ilave soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal
systems where sewers are not available for the disposal of wastewater?
Developments anticipated by the Housing F. lemcnt Update consist of development in tile MCAS-Tustin Reuse
Plan area and lnfill areas outside the Reuse Plan. The implementation of thc Reuse Plan x~ould require
improvement to thc existing sewer system located at the Reuse Plan area. The Program IilS. EIR for MCAS-
Tustin discusses the needed improvements to accommodate the anticipated development. In general, thc
existing facilities located in tile Reuse Plan area g'ould ultimately be replaced with installation of neg' sewer
systems.
Infill developments are located within urbanized areas of the City. l)evclopments that occur in the infill areas
are required by existing City regulation to utilize the local sewer system. Compliance with existing State and
local regulations and standards related to soil condition and compliance with the State Department of
Conservation, Mines and Geology Division's established engineering procedures would reduce any potential
impact to a level of insignificance.
Mitigation Measures'Monitoring Required:
· No mitigation measures arc necessary.
Sources: Tustin City Code
Tustin General Plan
Ilousing Element Update
Program EIS EIR for MCAS-Tustin (Pages 4-32 to 4-461
HAZARDS AND HAZARDOUS MA TERIALS
Create a significant hazard to tile public or the environment through the routine transport, use, or
disposal of hazardous materials?
Create a significant hazard to the public or the environment Ihrough reasonable foreseeable upset and
accident conditions involving the release of hazardous materials into the environment?
City of Tustin · Page 31
3. Environmental Analysis
c)
d)
e)
Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste
within one-quarter mile of an existing or proposed school?
Be Incated on a site which is included on a list of hazardous materials sites compiled pursuant tn
Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or
the environment?
The Program ElS EIR for MCAS-Tustin has identified areas with potential environmental contamination and
debris on the site as a result of tnilitary activities. The Department of the Navy (DON) is in the process of
implementing various remedial actions that will remove, manage, or isolate potentially hazardous substances.
This is required by the Federal I,aw.
Although the development of residential units within the Reuse Plan would not result or create significanl
hazardous substance, recreational uses (connncrcial. gol£ course, and parks) to support the residential uses may
utilize pesticides. \Vithin the high tech research and development area of the commercial land use designation.
various hazardous substances may be used. floweret, through compliance with existing applicable Federal,
State, and local regulations, any potential impacts would be reduced to below a level of significance.
Infill developments would be unlikely to use. transport, or dispose significant hazardous materials due to their
nature as residential properties. Other than those chemicals typically found in residential properties (i.e.
cleaning solutions, fertilizers, etc. regulated by the Orange Countx Health Department if disposed improperly),
no hazard or hazardous materials would likely be transported, used. disposed, released, or emitted. Therctbre,
no significant impact would result from the thrill developments.
Mitigation Measures"Monitoring Required:
· No mitigation measures arc necessary.
Sources: Tustin Cily Code
Tustin General Plan
Housing Element Update
Program ElS EIR for MCAS-Tustin (Pages 4-130 to 4-135)
For a project located within an airport land use plan or, where such a plan has not been adopled, within
txvo miles of a public airport or public use airport, would the project result in a safely hazard for people
residing or working in the project area?
John \\:avne Airport is located approximately two miles soulhwcst of the City of'fustin. This facility is thc
primary airport serving Orange CounLv. Land use restrictions exist for areas adjacent to and under flight
patterns tbr John \Vaync Airport. These regulations restricl sensitive uses in order to minimize the potential loss
of life and property in the event of an aircraft accident, to reduce nmse impacts, and lo reduce thc risk of aircraft
colliding with tall buildings or other structures.
The developments anticipated by the l lousing Elemen! L'pdate consist of developments in the MCAS-Tustin
Reuse Plan and thrill areas outside the Reuse Plan. Thc aircraft pattern for John Wayne Airport crosses north of
the westerly portion of Tustin and in the vicinity oF Red Hill Avenue, adjacent to the Reuse Plan area.
According to Airport Land Use Commission (AEI.UP). no restrictions are in place in conjuuction with possible
crash zones, lIowcver, the Reuse Plan thlls within a 20,000 foot area of concern tbr buildings with heights
ranging from 110 feet lo 200 feet. Since housing units at thc Reuse Plan area is unlikely to be over three (3)
stories in height or over lbrty (40) Ibet. no impact would result from the development of housing units at the
MCAS-Tustin.
Mitigation Measures Monitoriug Required:
City of Tustin · Page 32
3. Environmental Analysis
g)
b)
· No mitigation measures are necessary.
Sources: Tustin City Code
Tusfin General Plan
llousing Element Update
Program EIS:EIR for MCAS-Tustin (Pages 3-13 to 3-17)
For a project within the vicinity of a private airstrip, would the project result in a safety hazard for
people residing or working in the project area':
There are no private airstrips located within thc City ofTustin: theretbre, the proposed project would not result
in any significant safety hazards from private airstrip airport related activity.
Mitigation Measures'Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS EIR for MCAS-Tustin (Pages 3-13 to 3-17~
llnpair implementation of or physically interfere wilh an adopted emergency response plan or emergency
evacuation plan':
'fhe proposed project would not conflict with the City of Tustin's emergency response or evacuation plans. As
housing units at the former MCAS-Tustin area develop overtime, a new roadway network system would be
added in accordance with the phasing plan described in the Program EIS/F. IR for MCAS-Tustm. 'I-he ne~
roadway system includes an emergency response plan and emergency evacuation plan. 'fherdbrc, no adverse
impact would be anticipated.
With respect to the infill areas, no conilict with the Clly ol"l'ustin's emergency response or evacuation plans
would be anticipated. Compliance with the Cit3."s Land t;sc Element. Circulation Element. and Public Safety
Element would ensure that proposed developments would not interfere or impair the implementation of an
adopted emergency response plan or emergency evacuation plan.
Mitigation Measures Monitoring Reqttired:
· No mitigation measures are necessary.
Sources: Tustin (7it3' Code
Tustin General Plan
Housing Element Update
Program ElS EIR tbr MCAS-'fusfin (Pages 4-139 to 4-162)
Expose people or structures to a significant risk of loss, injury, or death invoh'ing wildland fires,
including where wildlands are adjacent lo urbanized areas or where residences are intermixed with
wildlands?
'Ibc Orange County Fire Authority identified two major sections of thc City-...residential and commercial
districts south of the Santa ..\na Freeway and north of Edinger Street--as having trthercnt fire danger problems,
which could result in extensive fires under worst-case conditions. This whole area includes high-density
residential development composed of wood frame buildings with shake shingle rool~. The second area of
City of Tustin · Page 33
$. Environmental Analysis
concern is thc Peters Canyon area. This is adjacent to a wildland interface area from which natural fires could
spread to residential neighborhoods.
Urban and wildland fire hazards could resull from a number of causes, including arsou, carelessness, home or
industrial accidents, or from ignorance of proper procedures for home or business repairs. I.ow water pressures
could also contribute to fire hazards in Tustin. The current practice and code requirements tbr use of fire
retardant roofing materials, the enforcement of building code that assure adequate fire protection, thc upgrading
of emergency water line capacities in conjunction with development as required by the Orange County Fire
Authority, and the City's aud Orange County Fire Authorities maintenance of its mutual aid agreement with
surrounding jurisdictions will reduce the risk of loss. injury, or death from fires.
Mitigation Measures;Monitorntg Required:
· No mitigation measures are necessary.
Sources: Tustin (7it3' Code
Tustin General Plan
Housing Element Update
Program ElS EIR for MCAS-Tustm
3.8 HYDROLOGY AND WATER QUALITY
a. Violate any water quality standards or waste discharge requirements?
The Housing Element Update anticipates the development of 3.298 housing units. As these units arc developed.
wastewater would be discharged into tile local sewer system and on-site drainage would flow into the City's
existing storm drain system. As part of Section 402 of the Clean Water Act. the U.S. F, nvironmental Protection
Agency (EPA) has established regulations under thc National Pollution Discharge Elimination System
(NPDES) program to control direct storm water discharges. In Calilbrnia. the State Water Quality Control
Board (WCQB) administers the NPDES permitting program and is responsible for developing NPI)ES
permitting requirements. The NPDES program regulates industrial pollutant discharges, including construction
activities. The City of Tustin is a co-pcrmittee with the County in tile National Pollution Discharge Elimination
System (NPDES) permit.
Future development would be required to comply with the NPI)ES program. Additionally, through the City's
existing regulations, compliance with water quality standards and waste discharge requirements in construction
operations is required, thereby reducing potential water quality impacts to a level that is less than significant.
Mitigation Measures Monitoring Required:
· No mitigatiun measures are necessary.
Sources: Tustin City Code
'l'ustin General Plan
Housing F. lemcnt Update
Program ElS 'EIR for MCAS-Tustin (Pages 4-32 to 4-46)
Tustin Water Department and h'vine Ranch Water District
Cify of Tustin o Page 34
3. Environmental Analysis
do
Substantially deplete groundwater supplies or interfere 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 pre-existing nearby wells would drop to a level which would not support existing
land uses or planned uses for which permits have been granted)?
Groundwater resources in the area consist of a complex system of aquifers and aquicludcs, separated by
bedrock or layers of soil. The City of Tustin is located within the East Coastal Plain'Orange County
groundwater basin. The City straddles the lrvinc, Forebay. and Pressure sub-areas of the Orange Count)' Basin.
Within these systems the aquifers are separated by Iow-permeability strata known as aquitards, x~ hich generally
limit the vertical hydraulic exchange between the aquifers. The Basin is replenished with tlows from thc Santa
Aha River and imported water supplies purchased from Metropolitan Water District. The Orange Count)' Water
District actively and beneficially manages the Basin.
The devclopmem of 3,298 additional housing units by 2005 would increase water consumption in the City as
well as increase dependence on local and imported supplies of groundwater. The Program EIS'EIR. tbr MCAS-
Tustin discusses impacts related to groundwater supplies and recharge, and according to the IRWI). there is
adequate water capacity to supply civilian reuse development at the former MCAS-Tustin. As in the thrill
areas, the City's Water Department has also determined that there would bc adequate water supply to support
infill developments. Therefore. no significant impact to groundwater supplies or groundwater recharge would
result from the implementation of the llousing Element l,:pdatc.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary'.
Sources: Tustin City Code
Tustin General Plan
l lousing Element Update
Program EIS EIR tbr MCAS-Tustin (Pages 4-32 to 4-46)
Tustin Water Department and Irvine Ranch Water District
Substantially alter the existing drainage pattern of the site or area, including through the alteration of the
course of a stream or river, in a manner which would result in flooding on- or off-site?
Substantially alter the existiug drainage pattern of the 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 mauner.
which would result in flooding on- or off-site?
Erosion is not anticipated to be substantial during construction or operation of developments anticipated by the
City of Tustin Housing Element. Development of the Reuse Plan area would replace existing agricultural fields
and undeveloped areas with urban-type development. While thc golf course and various parks would provide
some pervious surfaces to absorb rainwater, the overall amount of impervious surface would increase, thereby
increasing the amount of surface water runoff. Utilizing thc existing storm drain system al the former MC.\S-
'fustin would not be a practical alternative because most of those pipes and channels are undersized.
To accommodate the development at the P, euse Plan. a conceptual storm drain plan has been developed in
coordination with the Orange County Flood Control District (OCFCD). This conceptual system includes five
major drainage areas with mainline facilities and improvements to thc OCFCD Barranca Channel. 'l]~is system
shall be provided by the cities of ln'ine, 'l ustin and OCFCD as a condition or pre-condition of development
approvals: therefore, impacts would be less than significant.
City of 7'ustin · Page 35
3. Environmental Analysis
co
lnfill areas within the City are connected to the City's storm drain system and arc not anticipated to create
substantial erosion or siltation on- or off-site. In addition, adherence to existing City codes and required Cny's
standards in the Grading Manual designed to prevent erosion and siltation during the construction phase would
reduce potential impacts to a level of insignificance.
Mitigation Measures. Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
'fustin General Plan
Housing Element Update
Program ElS EIR fi~r M(?AS-Tustin (Pages 4-32 to 4-46)
Create or contribute runoff water which would exceed the capacity of existing or planned storm~'ater
drainage systems or provide substantial additional sources of polluted runoff?.
Development anticipated by the Housing Element Update involves developing primarily vacant land and some
infill land. Since the sites anticipated for development are currently vacant, the construction of proposed
housing would increase the amount of impervious surface coverage; theretbrc, thc total volume of surlhce water
runoff woukt be increased by the proposed project, although sediment transport will decrease significantly.
Under the NPI)ES Stormwater Pem~t issued to the County and City of 'l"ustin (as a co-permittee), all
development and significant redevelopment must be implemented with pollution control measures more
commonly rel:erred to as Best Management Practices (BMPs). Under existing City's regulations, compliance
with BMP and other NPDES requirements will reduce potential impacts to a level of insignificance.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: 'fustin (7it3' Code
Tustin General Plan
llousing F, lement Update
Program F'IS'EIR for MCAg-Tustin (Pages 4-32 to 4-46)
Otherwise substantially degrade water quality'?
Development at MCAS-Tustin under the Reuse Plan and some of the infill areas would increase the amount of
impervious surfaces, particularly by developing areas currently used tbr agriculture. Contaminants commonly
associated with urban development include leaking motor oils, fuels, and other vehicular fluids, and trash can be
washed b2, rain and carried with runoff into local and regional waterways. Under the existing NPDES permit,
all development and significant redevelopment must be implemented with non-point source pollution control
measures. These existing measures would reduce potential impacts to a level of insignificance.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
lIousing Element Update
Program EIS. EIR tbr MCAS-Tustin (Pages 4-32 to 4-46)
City of Tustin ~ Page 36
3. Environmental Analysis
go
ho
Place housing within a lO0-year flood hazard area as mapped on a federal Flood hazard Boundary of
Flood Insurance Rate Map or other flood hazard delineation map?
The General Plan Land Usc Element identifies some residential uses in the 100-year floodplain, therefore some
of the development proposed by thc llousing Element could possibly be placed in the 100-year flood zone. In
accordance with the City's Floodplain Management Ordinance, the City shall require all new development to
comply wilh provisions to reduce thc flood hazards b5.' eilhcr anchoring, increasing building elevation, or
utilizing materials and equipment resistant to flood damage. Compliance with this existing Ordinance would
reduce potential impacts to a level of insignificance.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin Floodplain Management Ordinance (Tustin City Code Section 9801 to 9806)
Tustm General Plan
Housing Element Update
Program EIS EIR tbr MCAS-Tustin (Pages 4-32 to 4-46)
Place within a 100-year flood hazard area structure, which would impede or redirect flood flows?
The General Plan Land Use Element identifies some residential uses in the thrill areas are located in the 100-
5'ear floodplain. The development at the MCAS-'l"ustin: however, is not located within a 100-year flood hazard
area structure. Development in areas with fiood hazards would be subject to thc existing Floodplain
Management Ordinance to limit the personal and property damage that may occur due to flooding and
inundation. Compliance with the existing Uniform Building Codes and thc Floodplain Management Ordinance
woukt reduce potential impacts to a level of insignificance.
Mitigation Measures 'Monitoring Required:
* No mitigation measures are necessary.
Sources: Tustin (';it5' Code
Tustin Floodplain Management Ordinance ('fustin City Code Sections 9801 to 9806)
Tustin General Plan
Housing Element Update
Program EIS'EIR fi)r MCAS-Tustin (Pages 4-32 to 44-6)
Expose penple or structures to a significant risk of loss, injury, or death invoh'ing flooding, including
flooding as a result of the failure of a levee or dam':
According to thc City's Watcr Dcpartment, catastrophic dam failurc or flooding resulting fi-om the failure of
any one of thc main reservoirs in the Tustin area could generate riooding impacts in the Cily of Tustin. The risk
of flooding resuhing from dam breaches or failures would be reduced by working directly with the State Office
of Emer_nency Services to make physical improvements (if necessary) and monitor the sa~kty of the reservoirs.
\Vith respect to the Reuse Plan area, ii' cithcr of the Peters Canyon and Rattlesnake rescrvoirs failed during or
~fftcr a major earthquake, this would cause a flooding impact to the Reuse Plan area and potentially 1o infill
areas. IIowever, both reservoirs have been designed and constructed according to applicable earthquake
standards to reduce the chance of reservoir failure. The City has also implemented emergency response plans in
thc case of an earthquake to respond to this hazard. These plans would ensure the removal of people from the
site and avoid loss of human life. but property could be exposed. Property loss would be experienced with
reservoir failure, but by working directly with the State Office of Emergency Services to make physical
City of 'l~ustin · Page 37
3. Environmental Analysis
2.9
improvements (it' necessary) and proper monitoring of the safety of the reservoirs, unacceptable polential risk of
loss, injury, or death would be avoided.
g.'litigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program F. IS 'EIR tbr MCAS-Tustin (Pages 4-32 to 4-46)
'l'ustin \Vatcr Department and lrvine Ranch Water District
Inundation by seiche, tsunami, or mudflow?
A seiche is a surface wave created when a body of water such as a lake or reservoir is shaken, usually by
earthquake activity. Seiches are of concern relative to water storage facilities because inundation from a seiche
can occur if thc wave overflows a containment wall, such as lhe wall of a reservoir, water storage tank, dam, or
other artificial body of water. Neither the Reuse Plan area nor the infill areas are located near any confined
bodies of water that might be subJect to seichc in thc event of an earthquake.
:',, tsunami is ocean waves induced by large earthquake. Low-lying coastal areas may be subject to flooding and
other related property damage. According to thc County of Orange, neither tile Reuse Plan area nor the infill
areas lie within an area of tsunami run-up risk.
Mitigation Mcasures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS EIR tbr MCAS-Tustin
I.~illO U$£ AJVO Pl-4AItV/IVO
a) Ph.~sically divide alt established community?
Development anticipated by the I lousing Element U. pdate would involve development of vacant land and infill
developmenls. The implementation of the Housing Element U'pdate would involve a change in land use from
vacant to residential urban uses and'or intensification of uses at certain sites. The change in land use and:or
intensification of uses at certain sites however would not significantly divide any community or reduce access
to community amenities. Compliance with the Land [.:sc Element of thc General Plan and the City's zoning
regulations would ensure that the development of new housing units would not dMde an established
comnmnit3'.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City (;ode
Tustin General Plan
IIousing Element L'pdate
Program EIS'EIR tbr MCAS-Tustin (Pages 4-6 to 4-711
City of Tustin · Page 38
3. Environmental Analysis
b)
Conflict with any applicable land use plan. policy, or regulation of 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?
Development anticipated by the Housing Element Update would take place on lands designated for residential
use by thc General Plan and zoned residential per the City's Zoning Ordinance. With respect to the Reuse Plan
area, the development within thc Reuse Plan area would result in substantial change in existing land use by
replacing military and agricultural uses with civilian urban uses. Individual, site-specific compatibility impacts
are addressed by appropriate site design such as buffering, screening, setbacks, landscaping, etc. with proposed
Specific Plan.
Infill areas would be developed in accordance with the City's Code that requires compliance with Zoning
designations and the General Plan. Therefore, no conflict with an.',' applicable land use plan, policy, or
regulations is anticipated nor additional mitigation will be required.
Mitigation Measures 'Monitoring Required:
· No mitigation measures are necessary
Sources: Tustin City Code
'l'ustin General Plan
I lousing Element Update
Program EIS'EIR tbr MCAS-Tustin (Pages 4-6 to 4-7)
c) Conflict with any applicable habitat conservation plan or natural community conservation plan?
a)
l)evelopment anticipated by the Housing Element Update is located on land designated for residential uses in
developed urban neighborhoods and on vacant land at the former MCAS-Tustin. The proposed project would
not conflict with any habitat conservation plans or natural community conservation plans. No significant
impacts would result from project development.
Mitigation Measures Monitoring Required:
· Nn mitigation measures are necessary.
Sources: Tustin City Code
'l"ustin General Plan
I lousing F, lement Update
Program EIS.'EIR Ibr MCAS-'l"usfin
MINERAl. RESOURCES
Result in the loss of availability of a known mineral resource that would be a value to the region and the
residents of the state?
Currently there arc no mineral extraction activities in thc CiD' of Tustin. Regionally significant resources arc
found north of the City in the Cities of Orange and Anaheim, but future developments within Tustin x~ould not
impact those resources. No significant impacts are anticipated to result fi'om project development.
City of Tustin . Page 39
3. Environmental Analysis
b)
a)
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS EIR [bt MCAS-Tuslin
Result in the loss of availability of a locally important mineral resource recovery site delineated on a local
general plan, specific plan. or other land use plan?
Thc (;it5' does not contain any mineral resource recovery sites or mineral resource recovery areas. No
significant impacts would result from the development of the proposed project. No miligation measures are
necessary.
Sources:
Tustin City ('?ode
Tustin General Plan
Housing Element Update
Program EIS'EIR tbr MCAS-Tustin
NOISE
Exposure of persons to or generatiou of noise levels in excess of standards established in the local general
plan or noise ordinance, or applicable standards of other agencies?
.Noise impacts can be broken down into three categories. The first is "audible" impacts, which refers to
increases in noise level that are perceptible to humans. Audible increases in noise levels generally refer to a
change of three dBA or more since this level has been found to be barely perceptible in exterior environments.
The second category, "potentially audible," refers to a change in noise level between one and three dBA. This
range of noise levels was found to be noticeable to sensitive people in laboratory environments. The last
category is changes in noise level of less than one dBA that are typically "inaudible" to thc human ear except
under quiet conditions in controlled environments. Only "audible" changes in noise level are considered as
potentially significant.
Mobile-source noise (i.e. vehicles) is preempted from local regulation. For mobile sources, an impact would be
considered significant it' the project were to increase noise by 3 dBA (a barely discernable increase) and the
resultant noise exceeded the City's noise standards, or 5 dBA (notable to most people) if the resultant noise
remained below City standards.
The proposed project site is located within the City of Tustin and thus is subject to thc General Plan and existing
City's noise ordinances. The General Plan discusses the effects of noise exposure on thc population and sets
landuse compatibiliLv goals aimed at protecting residents from undue noise. Thc Plan folk>ws the
recommendations set forth in Title 25 of the Calilbrnia Administrative (7ode and discourages residential
development in areas where exterior noise levels exceed 65 dBA CNEI,, unless measures arc implemented to
reduce noise levels to below this value.
The Tustin Noise Element contains the following residential noise level standards:
City of Thstin · Page 40
3. Environmental Analysis
Land Use
Noise Standards~
InteriorZ3 : Exterior
Residential - Single-family multifamily,
duplex, mobile home
Residential - Transient lodging, hotels,
motels, nursin, g homes, hospitals.
CNEL 45 dB ! CNEL 65 dB"
CNE_ 45 dB CNEL 65 dB~
1. CNEL: Community Noise Equivalent Level.
Leq {12): The A-weighte~ enuivalent sound ;evel averaged over a 12-hour period lus~;alty the hours of
ooeraiion).
2. Ncise Standaros with windows closed. Me~,anicai venulation shall ~ providea per UBC requirements to
provide a hab~bie environment
3. Indoor environment excludi~ bathrooms, toile~s, c:osets, ano corridors.
4. Outdoor environment limited to rear yard of single-family homes, mu,'ti-faroiiy patios, balconies (with a de;~th of 6'
or mom). and common recreation areas
:Voise Ordinance
The Tustin .Noise Ordinance establishes standards for nmximum noise levels within residential areas in thc
City. The exterior noise level standard is 65 dBA, and thc interior noise level standard is 45 dBA. The
City, realizes that the control of construction noise is difficult at best. It does however implemenl its Land
Use Compatibility Standards, which provide development standards tbr exterior noise levels across thc
various land use categories.
State o, f Cal(fornia Standard~'
The Calilbrnia Office of Noise Control has set acceptable noise limits for sensitive uses. Sensitive-type
land uses. such as schools and homes, are "normally acceptable" in exterior nnise environments up to 65
dBA CNEL and "conditionally acceptable" in areas up to 70 dB..\ CNEL. A "conditionally acceptable"
designation implies that new construction or development should be undertaken only after a detailed
analysis of the noise reduction requirements tbr each land use t)T~e is made and needed noise insulation
features arc incorporated in the design. By comparison, a "normally acceptable" designation indicates that
standard construction can occur with no special noise reduction requirements.
Future development would be required to comply with the City's Building Code anti State's existing regulations
on vehicle noise, roadway construction, and insulation standards. This would ensure that noise levels in Tustin
residential areas are maintained within acceptable standards that prevent extensive disturbance, annoyance, or
disruption.
The implementation of the MCAS-Tustin Reuse Plan would result in additional vehicular noise from u'afiic
generated by new development. Projected noise levels along major roadways are included in the Program
ElS EIR for MCAS-Tustin. The proposed extension of Tustin Ranch Road could expose existing residences to
noise levcls greater than 65dB(A) CNEL. Some existing residential units within the Reuse Plan area may
experience noise lexels greater than 65dB(A) CN!!I.. With reuse anti future development, noise levels at
~csidential and park locations adjacent to Warner Avenue may exceed 65dB(A) CNEL. The Program EIS EIR
for MCAS-Tustin addresses potential impacts that may result in noise impacts and mitigation measures were
incorporated to reduce thc potential impacts to a level of less than significant.
[nlill developments would generate additional noise typically associated with residential uses to the arca.
However, compliance with thc City's existing noise regulations would reduce impacts to a less than significant
level. Development of any infill sites adjacent to arterial noise exceeding the maximum noise levels would be
required to comply with State and Building Code standards for insulation and interior noise levels.
City of Tustin · Page 41
3. Environmental Analysis
In summary, the implementation of the Housing Element Update would not result in an)' impacts beyond those
identified in the Program EIS'EIR for MCAS-'l'ustin. No further mitigation measures would be required
beyond those identified in the Program FIS EIR for MCAS-Tustin. which are hereby incorporated by reference.
.\litigation Measures Monitoring Required:
h)
· N-1 - Prior to reuse of an)' existing residential units within the reuse area for civilian use. the Cit.',' of
Tustin. where necessary and feasible, shall require the installation of noise attenuation barriers, insulation.
or similar devices to ensure that interior and exterior noise levels at these residential units do not exceed
applicable noise standards.
· N-2. During design of the grade-separated intersection of Tustin Ranch Road at Edinger Avenue. the City
of Tustin shall evaluate potential noise impacts on surrounding properties to the northeast of Edingcr
Avenue and shall incorporate into the design of this intersection noise auenuation measures determined
approprialc and feasible by the (;it)' of'fustin, in order to ensure that these surrounding properties do not
experience noise level that exceed C,y of Tustin noise standards.
· N-3 - For new development within thc reuse area, the City of Tustin shall ensure that interior and exterior
noise levels do not exceed those prescribed by state requirements and local city ordinances and general
plans. Plans demonstrating noise regulation contbrmity shall be submitted tbr review and approval prior to
building permits being issued to accommodate reuse.
· N-4. Prior to the connectio,~ of Warner Avenue to the North Loop Road or South Loop Road, the City of
Tustin shall conduct an acoustical stud)' to assess reuse traffic noise impacts to existing sensitive receptors
adjacent to Warner Avenue, between Harvard Avenue and Culver Drive. It mitigation of reuse traffic noise
impacts is required, the City of Tustin and the (;it)' of Irvine shall enter into an agreement that defines
required mitigation and which allocates the cost of mitigation between tile Cfi)' of Tustin and the (?it)' of
Irvine on a fair-share basis.
· No mitigation measures are necessary for thrill developments.
Sources: Tustin City Code (Section 4611 to 4624)
Tustin General Plan
llousing Element Update
Program ElS EIR lbr MCAS-Tustin (Pages 4-231 to 4-237)
Exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels':
The development of residential housing units would not result in exposure of people with excessive
groundborne vibration or groundborne noise levels, l iowever, during the construction of potential new units,
there could be temporary groundborne vibration during the grading of the sites which will be reduced with
implementation in the field of City's standard procedures and policies related to construction (i.e. complaints
regarding vibration would require construction hours to be altered, replaccmenl of construction equipment to
minimize vibration, etc.)
Mitigation Measures 'Monitoring Required:
· No mitigation measures arc' necessary.
Sources: 'Fustin (7it.,,' Code (Section 4611 to 4624)
Tustin General Plan
Housing Element Update
Program EIS EIR tbr MCAS-Tustin (Pages 4-231 to 4-237)
City of Tustin · Page 42
3. Environmental Analysis
c)
A substantial permanent increase in ambient noise levels in the project vicinity above levels existing
without the project?
Traffic related to the increased development contemplated by thc Housing Element Update would result in
permanent increases in ambient noise levels.
Thc Program EIS'EIR for MCAS-Tustin addresses potential noise impacts that ma)' result from the
implementation of the Reuse Plan and mitigation measures were identified It) reduce the potenual impacts to a
level of less than significant.
Infill developments proposed by the Housing Element Update would be required to comply with thc City's
existing ordiuances that would ensure that noise levels in infill areas are maintained within acceptable
standards.
The implementation of the Housing Element Update, particularly the development at the MCAS-'Fustin Reuse
Plan area, would potentially create noise impacts. However, the implementation of the llousing Element
Update would not result in any impacts beyond those identified in the Program EIS'EIR for MCAS-Tustin. No
further mitigation measures would be required beyond those identified in thc Program I'.'IS'EIR for MCAS-
Tustin.
Mitigation Measures'Monitoring Required:
· N-I - Prior to reuse of any existing residential units within thc reuse area for civilian use, the City of
'Fustin, where necessary and feasible, shall require the installation of noise anenuation bamers, insulation,
or similar devices to ensure that interior and exterior noise levels at these residential units do not exceed
applicable noise standards.
· N-2. During design of the grade-separated intersection of Tustin Ranch Road at Edinger Avenue, the City
of Tustin shall evaluate potential noise impacts on surrounding properties to the northeast of I-!dingcr
Avenue and shall incorporale into the design of this intersection noise atlcnuation measures determined
appropriate and feasible by the City of Tustin. in order to ensure that these surrounding properties do not
experience noise level that exceed City of Tustin noise standards.
· N-3 - For new development within tile reuse area, the City ol'Tustin shall ensure that interior and exterior
noise levels do not exceed those prescribed by state requirements and local city ordinances and general
plans. Plans demonstrating noise regulation conformity shall be submitted tbr review and approval prior to
building permits being issued to accommodate reuse.
N4. Prior to the connection of Warner Avenue to the North Loop Road or South Loop Road, the City of
Tustin shall conduct an acoustical study to assess reuse traffic noise impacts to exisung sensitive receptors
adjacent lo Warner Avenue, between l larvard Avenue and Culver Drive. Il mitigation of reuse traffic noise
impacts is required, the (;it),, of Tustin and the (:it3' of lrvine shall enter into an agreement that defines
required mitigation and which allocates the cost of mitigation between the City of Tustin and the Cily of
Irvine on a thir-share basis.
· No mitigation measures are necessary for thrill developments.
Sources: Tustin City (.',tide (Section 4611 to 4624)
Tustin General Plan
IIousing Element Update
Program EIS:EIR for MCAS-Tustin (Pages 4-231 to 4-237)
City of Tustin · Page 43
3. Environmental Analysis
d)
A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels
existing without the project?
Noise levels associated with construction activities would be higher than the ambient noise levels in the City.
but would subside once construction of the residential units proposed in Ihe Housing Element Update are
completed.
I'wo Lxpes of noise impacts could occur during the construction phase· First, the transport of workers and
equipment to the construction site would incrementally increase noise levels along site access roadways. Even
though there would be a relatively high single event noise exposure potential with passing trucks (a maximum
noise level of 86 dBA at 50 feet), the increase in noise would be less than one dBA when averaged over a 24-
hour period and should therefore have a less than significant impact at noise receptors along City truck routes.
Thc second t)~pe of impact is related to noise generated by on-site conslruction operations. Local residents
would bc subject to elevated noise levels due to thc operation of on-site construction equipment. Construction
activities arc carried out in discrete steps, each of which has its own mix of equipment, and consequently its
own noise characteristics. 'Fable 2 lists typical construction equipment noise levels recommended for noise
impact assessment at a distance of 50 feet.
Noise ranges have been found to be similar during all phases of construction, although the erection phase tends
to be less noisy. Noise levels range up to 89 dBA at 50 feet during the erection phase of construction, which is
approximately 2 dBA lower than other construction phases. The grading and site preparation phase tends to
create the highest noise levels, because lhe noisiest construction equipment is found in the earthmoving
equipment category. This category includes excavating machinery (backfillers, bulldozers, draglines, fl'ont
loaders, etc.) and earthmoving and compacting equipment (compaclors, scrapers, graders, crc). T?pical
operating cycles ma.,,' involve one or two minutes of full power operation fi~llowed by three to four minutes at
lower power settings. Noise levels at 50 tbet from earthmoving equipment range from 73 to 96 dBA.
TABLE 1
NOISE LEVELS GENERA TED B Y TYPICAL CONSTR UCTIO.V
Range of Sound Levels
T~tpe of Equipment Measured tdBA at 50 feetI
Piie Drivers. 12.000-18.000 fi-lb/blow 81-96
Rock Drills 83-99
Jack Hammers 75-85
Pneumatic Tool~ =78-88
Pumps 68-80
Dozers 85-90
Tractor 77-82
E~UIPMENT
Suggested Sound Levels for
Analysis {dBA at 50 feetI
93
96
82
85
77
88
Front-End Loaders 86-90 88
81-90
81-90
._Hydraulic Backhoe
_~,draulic Excavators.._
Graders
86
86
79-89 86
Air Compressors 76-86 86
Trucks 81-87 ! 86
Source: No:se Control for Build'n~s and Manufa~unr~ Plants BBN 1987
All construct]on-related noise shall be subject to existing City's noise regulations. The City's .Noise Ordinance
limits construction noise to 7:00 a.m. to 6:00 p.m. Monday through Friday and from 9:00 a.m. to 5:00 p.m. on
Saturdays. All construction activities arc prohibited on Sundays and City-observed Federal holidays.
City of Tustin · Page 44
3. Environmental Analysis
e)
r)
a)
Compliance with the construction noise limitations and dBA noise standards would ensure that temporary or
periodic noise levels are maintained within acceptable standards.
.\'litigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code (Sections 4611 to 4624)
Tustin General Plan
Housing Element Update
Program ElS I';IR for MCAS-Tustin (Pages 4-231 to 4-237)
For a project located within an airport land use plan or, where such a plan has not been adopted, within
two miles nfa public airport or public use airport, would the project expose people residing or working
in the project area to excessive noise levels?
John Wayne Airport is located a little over two miles southwest of the Cily of'fustin. According to the John
\Vayne Quarterly Noise Abatement Reports, thc noise level resulting from aircraft noise is below the acceptable
65 dB Conununity ..Noise Equivalent l,evel (CNEL).
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City (;ode (Sections 4611 to 4624)
'l'ustin General Plan
llousing Element Update
Program EIS"EIR for MCAS-Tustin (Pages 3-13 to 3-17)
John Wayne Airport Quarterly Noise Abatement Reports
For a project within the vicinity of a private airstrip, would the project expose people residing or working
in the project area to excessive noise levels?
There are no private airstrips located within the City of'l'ustin; therctbre, the proposed project would not result
m any significant safety hazards from private airstrip related activity.
Mitigation Measurcs.'Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code (Section 4611 to 4624)
Tustin General Plan
Housing Flement Update
Program [:.IS EIR tbr MCAS-Tustin (Pages 3-13 to 3-17)
POPULA T/ON AND HOUSING
Induce substantial population growth in an area, either directly (for exmnple, by proposing new homes
and businesses) or indirectly (for example, through extension of roads or other infrastructure)'?
The (7it,,' of Tustin had an estimated population of 67.153 in 1999. The City has experienced rapid population
growth over the last 30 years. This population growth has occurred w~th increases in the number of housing
units. The llousing Element Update anticipates an additional 3,298 housing nnits, including single-family
City of Tustin o Page 45
3. Environmental Analysis
residential and multi-family residential, for development through 2005. The anticipated units arc within the
constraints set tbrth in the City's current General Plan.
The development of an additional 3,298 housing units, of which 2.901 units xxould be located at thc MCAS-
Tustin Reuse Plan, woukl result in an increase in the City's population and housing over a 20 year period, not a
significant impact on the City's population. The development of the Reuse Plan would also result in the
development of affordable housing in selected areas which would address the needs of the homeless, as well as
those of Iow and moderate income. The,'efore, thc m~plcmcntation of the Reuse Plan would provide a beneficial
impact.
Intlll developments that would occur outside thc Reuse Plan area woukt also generate population anti housing
growth in the (-;it3'. l lowever, this growth is insignificant given the City's total population and is w,thin the
constraints set fbrth in the City's General Plan. This will help thc City to achieve its I>`egional llousing goals.
Again, this impact would be beneficial impact tbr the City's housing stock.
b)
Mitigation Measures Monitoring Required:
· No mitigation measures arc necessary.
Sources: Tustin City Code
Tustin General Plan
l lousing Element Update
Program EIS 'F. IR for MCAS-Tustin (Pages 4-14 to 4-21)
Displace substantial numbers of existing housing, necessitating the coustruction of replacement housing
elsewhere?
c) Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere?
Future developments anticipated by the Housing Element [,:pdate would be constructed primarily on vacant land
in the (?it3'. However. there ma5' be new infill construction actMties that could result in displacement of
existing housing units, necessitating the construction of replacement housing elsewhere. Consistent with State
Law. the City would be required to prepare relocation and or displacement plans, where necessary, and would
be required to replace units displaced or destroyed and provide relocation services and benefits to displaced
households.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: 'l'ustin (7it3' Code
Tustin General Plan
Housing Element t.'pdate
Program EIS Ell>` for MCAS-Tustin (Pages 4-14 to 4-21)
3. ~3 PUBLIC SERVICES
Would the project result in substantial adverse physical impacts associated with the provision of new or
physically altered governmental facilities, 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 perfi~rmance objectives fl~r an)' of the publie services:
City of Tustin · Page 46
3. Environmental Analysis
a)
b)
c)
d)
e)
Fire protection?
Police protection?
Schools?
Parks?
Other public facilities?
Fire protection
]'he City of Tustin contracts with the Orange C.~ounty Fire Authority {OCFA) for fire protection sen'ices. The
Fire Authority maintains three stations in the City.
Ne`a' housing developments would increase demand tbr fire protection, as `,`,'ell as emergency medical services.
Individual development projects v,'ould be required to meet existing OCFA regulations regarding construction
materials and methods, emergency access, water mains, fire ilo`,`,', fire hydranls, sprinkler systems, building
setbacks, and other relevant regulations. Adherence to the ()CFA regulations `a'ould reduce the risk of
uncontrollable fire and increase the ability to efficiently provide fire protection services to the City. The number
of fire stations in the areas surrounding the site will meet the demands created by tile proposed project.
Police protection
The City of Tustin operates its own Police Department. New housing developments at the MCAS-Tustin Reuse
Plan area `a'ould increase the need fbr police emergency and protection services. The need for police protection
services is assessed on the basis of resident population estimates, square footage of industrial uses. and square
footage of retail uses. The Program EIS:EIR tbr MCAS-Tustin identifies that the need for additional police
services could be accommodated at Ire existing City police station and no new facilities would be required.
Schools
Development of additional housing would induce population growth, therefbre increasing the number of school
age children. Of the 3,298 housing units proposed in the Housing Element Update, approximately 397 units
could be developed in infill areas. Most housing development anticipated would be located in the MCAS-
Tuslin Reuse Plan area.
The Reuse Plan is located within thc Tustin Unilied School District (TUSD), Irvine Unified School District
(IUSD). and Santa Aha Unified School District (SAI. JSD). However. all thc housing units proposed under the
Housing F. lement Update ,,,,'ill be located within the 'I'I:'SD and IL'SI). The implementation of the Reuse Plan
would provide for t`a'o 10-acre elementary school sites and one 40-acre high school site within the TUSD. The
'I'L'SD has agreed that these sites `a'ould be considered adequate to accommodate new students generated by the
Reuse Plan development, as well as some of the future growth anticipated for the Tustin community as a whole.
With respect to the II..;SI). the implementation of the Reuse Plan `a'ould provide fbr a 20-acre school site to
IUSD to serve the growing student population within its dist'rict. With respect to the SAUSD, although no
housing exists in this area to be reused and no ne`a' housing would be constructed in its boundaries, indirectly
ne`a' students could bc generated through the provision of new employment. The commercial uses `a'ould
generate employment and it' new employees were to seek housing in locations served by the SAUSD, the`,'
would indirectly generate students. Ho`a'ever, where these students `a'ould locate `a'ithin SAt;SI') is not known at
this time, and accordingly, construction or housing impacts cannot be identified. There is no impact on
City of Tustin · Page 47
3. Environmental Analysis
community college facilities because students in Tustin can altend any community college in the Count2,'.
Therefore. except lbr construction level impacts which will be mitigated to a level of insignificance due to
required compliance with existing (?ity regulations, no other school impacts arc anticipated.
With respect to the infill areas, all potential sites are located within the TI.!SD boundaries. Future anticipated
growth for the anticipated intill sites will be assessed school impact tbes to accommodate any impacts to
existing schools.
parks
Thc (7it3' of Tustm currently has 12 parks and 4 community recreation facilities. The implementation of the
MCAS-Tustin Reuse Plan would provide new park sites. These park sites include a regional park, a community
park, and several smaller neighborhood parks. A privately owned golf course would be constructed as well but
would be available for public usage. These facilities would provide park and recreation opportunities to the
population of the Reuse Plan areas as well as the (?ltv and the region and their development will not result in a
significant impact on the environment. Once constructed, these parks would meet residential population
demand. The existing parks in the City of Tustin will serve new development as well.
Other public facilities
Most of the development of these new housing units would be provided within the MCAS-Tustin area. The
Program EIS.'EIR tbr MCAS-Tustin discusses impacts related to other public facilities that may result from the
implementation of thc Reuse Plan. These facilities include libraries and recreational bikeway trails.
· l.ibrarv
Using the County's criteria, the implementation of the Reuse Plan v, ould result in a demand of up to
approximately 2,500 square feet of library space. This relatively small amount of space is well below the
libraw system's general minimum size of 10.000 square feet for a branch library, and would not trigger the
need for a new facility. Therefore, there would be no significant effects on the environment.
· Rccrcational Bikeway Trails
Implementation of the Reuse Plan would include bikeway:riding and hiking trails, although such is not
required by the Ilousing Element Update. A Class I and Class II bikeway, riding and hiking trail would be
constructed by the County of Orange. This system would connect vital links necessary for a
comprehensive regional and improved local bikeway, riding and hiking trail system and would bca
beneficial impact.
With respect to the infill areas, consistent with the policies of the City's Circulation Element, the City
would suppor~ and coordinate the development and maintenance of bikeway riding and hiking trails with
thc County of Orange. As development of bikeways trails occur, City regulations would reduce
construction related impacts to a level of insignificance.
General Implementation Requirements:
To support development in tile reuse plan area, file Reuse Plan Specific Plan requires public sen'ices and thcilities to
be provided concun'cnt with demand. The implementation of the Housing Eletnent Update at the reuse plan will be
required to comply with the following applicable implementation measures:
General
City of Tustin · Page 48
3. Environmental Analysis
The City of Tustin shall ensure that adequate fire protection, police protection, and parks and recreation
facilities (including bikeways.'trails) needed to adequately serve the reuse plan area shall be provided as
necessary. To eliminate any negative impact the projects could have on the City's general fund, financing
mechanisms including but not limited to developer ffes, assessment districl financing, and or tax increment
financing (in the event that a redevelopment project area is created for the site), shall be developed and
used as determined appropriate by the City. Specifically:
1. Applicants tbr private development prqjects shall be required to enter into an agreement with
City of Tustin, as applicable, to establish a fair-share mechanism to provide needed fire aud
police protection services and parks and recreation facilities (including bikeways) through the
use of fee schedules, assessment district financing, Community Facility District financing, or
other mechanisms as determined appropriate by the City.
2. Recipients of property through public conveyance process shall be required to mitigate any
impacts of their public uses of property on public sen'ices and facilities.
Fire Protcction"Emcre, encv Medical Services.
· Prior to the first final map recordation or building permit issuance for development (except for financing
and reconveyances purposes), thc project developer could be required to enter into an agreement with the
City of Tustin OCFA. as applicable, to address impacts of thc project on fire services. Such agreement
could include participation ibr fire protection, personnel, and equipment necessary to serve the project and
eliminate any negative impacts on fire protection services.
· Prior to issuance of building permits, the project developer shall work closely with the OCFA to ensure that
adequate fire protection measures are implemented in thc prqject.
· Prior to thc issuance of building permJts, the project developer shall submit a fire hydrant location plan
the review and approval of the Fire Chief and ensure that fire hydrants capable of flows in amounts
approved by the OCFA are in place and operational to meet fire tk)w requirements.
Police Protection.
· Prior to issuance of building permits, tile project developer shall work closely with thc respective Police
Department to ensure that adequate security precautions are implemented in the project.
~.q_h..o o. lfi.
· Prior to thc issuance of certificates of use anti occupancy, the project developer shall submit to thc
respective City proof of payment of appropriate school fees adopted by the applicable school district.
Parks and Recreation.
· Prior to the first final map recordation (except tbr financing and reconveyance purposes) or building permit
issuance t'br development within the City of Tustin. the project developer shall be required to provide
evidence of compliance with all requirements and standards of tile City of Tustin Park Code.
· Prior to thc first concept plan for tentative tract map in the City ofTustin, the project developer shall file a
petition for thc creation of a landscape maintenance district for tile project area with the City of Tustin.
The district shall include public neighborhood parks, landscape improvements, and specific trails (Barranca
only), the medians in arterials, or other eligible items mutually agreed to by the petitioner and the City of
Tustin. In the event that a district is not established prior to issuance of the first building permit,
maintenance of items mentioned above shall be tile responsibihty ora community association.
City of Tustin · Page 49
3. Environmental Analysis
MitigationZMoniu~ring Required: No mitigation is required.
.q~ources:
'Fustin City Code
Tustin General Plan
I lousing Element Update
Program EIS EIR for MCAS-Tustin (Pa~ues 4-56 to 4-70)
3. ~4 RECREA T/ON
a) Would the project increase the use of existing neighborhood and regional parks or other recreational
facilities, such that substantial physical deterioration of the facility would occur or be accelerated?
The City of Tustin has 16 parks and recreation facilities on approximately 82 acres and, through the school
district, operates school playgrounds. In addition, the City maintains one senior citizen center and three family
and youth community centers. The implementation of the Reuse Plan would provide new park sites to serve
residents generated under the I Iousing Element Update. There is no evidence that the llousing Element Update
will cause or accelerate the physical deterioration of parks.
b~
Mitigation Measures'Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
[lousing Element L'pdate
Program EIS 'EIR for MCAS-'Fustin (Pages 4-56 to 4-70)
Does the project include recreational facilities or require the construction or expansion of recreational
facilities, which might have an adverse physical effect nn the environment?
New development anticipated by the Housing I','lement Update would increase the demand fbr parks anti
recreation facilities in the City. The implementation of the Reuse Plan would provide new park sites. These
park sites include a regional park, a community park, and several smaller neighborhood parks. A privately
owned golf course would be constructed as well but would be available for public usage. 'l'he development of
these thcilities will result in construction level impacts that can be mitigated to a level of insignificance under
existing City regulations.
lnfi[I developments would likely utilize the City's existing recreational facilities. Therefore, no significant
impact would result fi'om the development of infill areas.
Mitigation Measures 'Monitoring Required:
· No mitigation measures are necessary.
,~Otlrcesl
Tustin CiLv Code
Tustin General Plan
ltousing Element Update
Program EIS 'EIR for MCAS-Tustin (Pages 4-56 to 4-70)
3. ~$ TRANSPORTA TION/TRAFFIC
City of Tustin · Page 50
3. Environmental Analysis
a)
Cause an increase in traffic, which is substantial in relation to the existing traffic load and capacity of the
street system (i.e. result in a substantial increase in either the number of vehicle trips, the volume to
capacity ratio on roads, or congestion at intersections)?
Thc Housing Element Update anticipates development up to an additional 3.298 housing units. This
development would be located in the MCAS-Tustin Reuse Plan and at infill sites. The additional development
and associated traffic volumes of developing the Reuse Plan are included in the traffic analysis portion of the
Program EIS EIR for MCAS-Tustin. As the impacts of traffic due to housing alone were not separated out and
analyzed, the following discussion includes impacts due to commercial, industrial, and institutional uses, as well
as housing. In general, a number of intersections would be significantly impacted at thc buildout of the Reuse
Plan. Most of these impacted can be mitigated to a level of less than significant, llowever, significant traffic
impacts would remain at the intersections of Tustin Ranch Road and Walnul Avenue, and Jamboree Road and
Barranca Parkway under full buihout (year 2020).
lnfill areas are located within the established street system. Although generally traffic in the City of Tustin is
within the level of service standard, there are intersections that are at unacceptable level of service. Through the
City's existing Design Review process, development located at an unacceptable level of service which
contributes l0 percent or more of traffic will be assessed with mitigation fee as part of the City's Capital
Improvement Program. In addition, where applicable, the City would require dedication of right-of-ways
and. or require developers to construct the needed improvements to improve the level of service. Therefore,
compliance with the existing Ctty's regulations would reduce potential traffic impacts to a level that is less than
significant.
in summary, the implementation of the Housing Element Update, particularly the development at the MCAS-
Tustin Reuse Plan area, would potentially result in ummitigable impacts at two intersections described above.
I lowever, the implementation of the Housing Element t.;pdate would not result in any impacts beyond those
identified in the Program EIS. EIR for MCAS-Tustin. No lhrther mitigation measures would be required beyond
those identified in the Program EIS E1R for MCAS-Tustin.
.Mitigation Measures. Monitoring Required:
· IA-I - 'fable 4.12-10 presents the Phasing Plan for the on-sile circulation system. The Phasing Plan ois
based upon traffic circulation impact and mitigation analyses contained in the Traffic Report (Final
Appendix F). Under this Phasing Plan. the City of Tustin shall monitor all new development within the
Specific Plan. accounting for the cumulative AI)T generated bv development projects. As each ADT
threshold is reached, thc roadway improvements listed in Table 4.12-10 shall be constructed before any
additional projects wilhin thc Specific Plan would be approved.
· IA-2 - Table 7-3 of the Final EIS EIR (see 'fable 6 at the end of the Mitigation Monitoring and Reporting
Program) presents thc Trip Budget which summarizes the square footage of non-residential uses allocated
to each neighborhood by Planning Area and the associated AD'f. (Residential uses are shown tbr
ilfformation only, they are not part of the budget.) Pursuant to Section 3.2.4 of the Specific Plan, the City
of Tustin shall implement the trip budget by neighborhood to control the amount and intensity of
non-residential uses. Trip Budget transfers between neighborhoods shall also be implemented as directed
in subsection 3.2.4 of the Specific Plan.
· IA-3 - Prior to the approval of (1) a Planning Area Concep~ Plan pursuant to Section 4.2 of the Specific
Plan, (2) a site development permit, or (3) a vesting tentative map for new square tbotage (not for financing
or conveyance purposes), a project developer shall provide traffic information consistent x~ith the
provisions of the Specific Plan, this EIS EIR and the requirements of the City of Tustin Traffic Engineer.
The traffic inlbrmation shall (a) identify and assign traffic circulation mitigation measures required in the
F. IS EIR pursuant to the Phasing Plan described in 'fable 4.12-10 of the Final ElS EIR (see Table 5 at the
City of Tustin · Page S 1
3. Environmental Analysis
end of the Mitigation Monitoring and Reporting Program); (b) evaluale the effects of either the delay of any
previously committed circulation improvements or the construction of currently unanticipated circulation
improvements; and (c) utilize the circulation system and capacity assumptions within the EIS'EIR and any
additional circulation improvements completed by affected jurisdictions for the applicable timeframe of
analysis.
· IA-4 - Prior to the issuance of building permits tbr new development within planning areas requiring a
concept plan, a project developer shall enter into an agreement with thc City of Tustin to (a) design and
construct roadway improvements consistent with the AI)T generation Phasing Plan described in Table
4.12-10 of thc Final EIS.'EIR (see Table 5 at the end of the Mitigation Monitoring and Reporting Program)
and (b) address the impact of and specify the responsibility for any previously committed circulation
improvements assumed in the EIS EIR which have not been constructed.
· IA-5 - ifa subsequent traffic Phasing Plan demonstrates that certain circulation improvements should be
included in a different phase of Specific Plan development (accelerated or delayed) or that a circulation
improvement can be substituted, ~he mitigation Phasing Plan in Table 4.12-10 of the Final EIS"EIR (sec
Table 5 at thc end of tile Mitigation _Monitoring and Reporting Program) may be amended, subject
approval of the City of Tustin and any other aflbctcd jurisdictions, provided thal the same level of traffic
mitigation and traffic capacity would be provided.
· IA-7 - Each Specific Plan project would contain, to the satisfaction of the City of Tustin and'or City of
Irvinc. as applicable, a pedestrian circulation component shox~ing pedestrian access to regional hiking
trails, parks, schools, shopping areas, bus stops, and.'or other public thcilitics.
· T,C-I - In conjunction with the approval ora site development permit, the City of Tustin shall require each
developer to provide traffic operations and control plans that would minimize the traffic impacts of
proposed construction activity. The plans shall address roadway and lane closures, truck hours and routes,
and notification procedures tbr planned short-term or interim changes in traffic patterns. The City of Tustin
shall ensure that the plan would minimize anticipated delays at major intersections. Prior to approval, tile
City of Tustin shall review the proposed traffic control and operations plans with any affected jurisdiction.
· 'r.'c-2 -- The City of Tustin and the City of lrvine, as applicable (for that portion of thc reuse plan area
within Irvine), shall ensure that the arterial intersection improvements required in 2005 and 2020 and as
indicated in Tables 4.12-7 and 4.12-9 are implemented tbr their respective jurisdictions according to the
cumulative ADT thresholds identified in each table anti according to tile fair share basis noted. The AI)T
threshold represenls the traffic volume which would result in an impact and the faire share percentage
reflects tile percent of the traffic impact resulting from lh¢ Reuse generated traffic. In some cases, Reuse
traffic would geuerate 100 percent of thc impact, thereby assuming full financial responsibility
idenlitlcd improx'cments. In other cases, Reuse traffic would generate only a fraction of thc traffic
impacting thc intersection and financial responsibility would correspond.
· T (7-3 - The City of Tustin and the City of lrvine, as applicable (for that portion of thc reuse plan area
within lrvin¢), shall contribute, on a th. ir share basis, to improvements to fi'eewav ramp intersections as
listed in Table 4.12-8. The method of implementing improvements, e.g., restriping, ramp widening, shall
based on design studies, in association with Caltrans.
· T.C-4 - The City of Tustin and thc City of Irvine, as applicable (for that portion of thc reuse plan area
within Irvine), shall easure that all on-site circulation system improvements for the reuse plan area assumed
in the 2005 and 2020 traffic analysis and as shown in Table 4.12-10 of the Final I~IS'EIP, (sec Table 5 at
the end of the Mitigalion Monitoring and Reporting Program) arc implemented according to thc cumulative
ADT thresholds identified in the table. Under this Phasing Plan, the City of Tustin shall monitor all new
development within the site, accounting for the cumulative ADT generated by development projects. As
each ADT threshold is reached, the roadway improvements listed in Table 4.12-10 of the Final I'~l.g EIR
(see 'Fable 5 at the end of the Mitigation Monitoring and Reporting Program) shall be constructed bctbre
any additional projects within the reuse plan area would be approved.
City of Tuslin · Page 52
3. Environmental Analysis
b)
· T.'C-51 - Prior to approval of a site development permit or vesting tract, except for financing or conveyance
purposes, for all land use designation areas in Alternative I with the exception of the Learning Village,
Community Park, and Regional Park, a project developer shall enter into an agreement with the City of
Tustin and City of Irvine, as applicable (fbr that portion of the reuse plan area within Irvine) which assigns
improvements required in the E1S..'EIR to the development site and which requires participation in a fair
share mechanism to design and construct required on-site and arterial improvements consistent with the
ADT generation thresholds shown in Tables 4.12-7, 4.12-8, 4.12-9, and 4.12-10 (see Tables 2 t~ough 5 at
the end of the Mitigation Monitoring and Reporting Program).
· "1' C-6~ ' The City of'fustin and the City of Irvine. as applicable (for that portion of the reuse plan area in
lr¥ine), will monitor new development within the reuse plan area, accounting for the cumulative ADTs
generated by development projects within the reuse plan area. As each cumulative ADT threshold shown
in Table 4.12-10 (see Table 5 at the end of the Mitigation Monitoring and Reporting Program) is reached.
the roadway improvements listed shall be constructed before any additional projects within the reuse plan
area are approved.
· T.'C~7 - The (7it3' of Tustin shall adopt a trip budget tbr indMdual portions of the reuse plan area to assist in
thc monitoring of cumulative ADTs and the amount and intensity of permitted non-residential uses as
evaluated in the EIS'EIR.
· T. C-8 -- Alternative improvements that provide an equivalent level of mitigation in 2005 or 2020 to what is
identified in Tables 4-12-7, 4.12-8, and 4.12-9 may be identified Jn consultation between the City of'fustin
and the City of Irvine. as applicable, and the impacted jurisdiction.
· T C-9 -- The City of Tustin shall enter into agreements with Caltrans and the cities of Santa Aha and h'vine
to ensure that off:site roadway improvement programs needed to mitigate lhe effects of the proposed
alternative are constructed pursuant to improvement program established by the respective jurisdiction.
· No mitigation measures are necessary for infill developments.
Sources: Tustin City Code
'fustin General Plan
l-hmsing Element Update
Program EIS'EIR for MCAg-Tustin (Pages 4-139 to 4-163 and 7-32 to7-41)
Exceed. either individually or cumulatively, a level of service standard established by the count)'
congestion management agency for designated roads or highways?
Potentially Significant Impact. The City's Circulation Element establishes a slandard for a Level of Sen'ice
(LOS) "C" or better for major intersections in the City; thc City considers LOS "A" through "C" as acceptable,
and LOS "D' or greater as unacceptable. The County's Congestion Management Plan (CMP) indicates the
I.OS should be LOS "17 or better for CMP roadways (freeways and major highways).
Development anticipated by the Housing Element Update would be provided in the MCAS-Tustin Reuse Plan
and at lnfill land. The Program ElS EIR for MCAS-Tustin provides traffic impact analysis and mitigation
measures to address the requirements of the Growth Management Plan and the Congestion Management Plan to
reduce the impacts to a level of insignificance. In general, a number of intersections would be significantly
impacted at the builtout of the Reuse Plan. Most of these impacted can be mitigated to a level of less than
significant. However, significant traffic impacts would remain at the intersections of Tustin Ranch Road and
Walnut Avenue, and Jamboree Road and Barranca Parkway under full builtout (year 2020).
'Fable references in the mitigation measures have been changed from the Final
FEIS,'EIR to match the correct table numbers in the FEIS,EIR.
City of Tustin · Page 53
3. Environmental Analysis
lnfill developments would be subject to review to ensure that indMdual development would not exceed the
level of sen'ice standards, indMdually or cumulatively. Compliance with the City's Circulation Element and
Cit,,,' Ordinances related to streets and highways would reduce potential traffic impacts to a level that is less than
significant.
In summary, the implementation of the lIousing Element Update. particularly tile development at the MCAS-
Tustin Reuse Plan area, would potcmially result in ummitigablc impacts at the two intersections described
above. However, the implementation of the Housing Element t.:pdate would not result in any impacts beyond
those identified in the Program E1S'E1R tbr MCAS-Tustin. No further mitigation measures would be required
beyond those identified in the Program EIS EIR for MCAS-Tustin.
Mitigation Measurcs*lonitoring Required:
· IA-1 · Table 4.12-10 presenls the Phasing Plan for the on-site circulation system. The Phasing Plan ois
based upon traffic circulation impact and mitigation analyses contained in the Traffic Report (Final
Appendix F). Under this Phasing Plan, the City of-I'ustin shall monitor all new development within thc
Specitic Plan. accounting tbr thc cumulative ADT generated by development projects. As each AI)'I'
threshold is reached, the roadway improvements listed in Table 4.12-10 shall bt' constructed before an)'
additional projects within the Specific Plan would be approved.
· IA-2 - Table 7-3 of thc Final EIS'EIR (see Table 6 at the end of the Mitigation Monitoring and Reporting
Program) presents the Trip Budget which summarizes the square footage of non-residential uses allocated
to each neighborhood by Planning Area and the associated ADT. (Residential uses are shown fbr
inlbrmation nnly, the,,,' are not part of the budget.) Pursuant to Section 3.2.4 of the Specific Plan, the City
of Tustin shall implement the trip budget by neighborhood to control the amount and intensity of
non-residential uses. Trip Budget transfers between neighborhoods shall also be implemented as directed
in subsection 3.2.4 of the Specific Plan.
· IA-3 - Prior to the approval of (I) a Planning Area Concept Plan pursuant ti) Section 4.2 of the Specific
Plan, (2) a site development permit, or (3) a vesting tentative map for new square tbotage (not tbr financing
or conve.vance purposes), a project developer shall provide traffic information consistent with thc
provismns of the Specific Plan, this EIS Eli>, and the requirements of the City of'Tustin Traffic Engineer.
Thc traffic information shall (a) identify and assign traffic circulation mitigation measures required in the
EIS EIR pursuant to thc Phasing Plan described in Table 4.12-10 of the Final EIS"EIR (see Table 5 at the
end of the Mitigation Monitoring and Reporting Program); (b) evaluate the effects of either the delay of any
previously committed circulation improvements or the construction of currently unanticipated circulation
improvements: and (c) utilize the circulation system and capacity assumptions within the EIS'EIR and any
additional circulation improvements completed by affected jurisdictions tbr the applicable timeframe of
analysis.
· IA-4 - Prior to the issuance of building permits for new development within planning areas requiring a
concept plan, a prnject developer shall enter into an agreement ~ith the Cit.,,' of Tustin to ia) design and
construct roadway improvements consistent with the ADT generation Phasing Plan described in Table
4.12-10 of the Final FAS'EIR (sec ]'able 5 at thc end of the Mitigation Monitoring and Reporting Program)
and (b) address the impact of and specit3' the responsibility tbr any previously committed circulation
improvements assumed in the ElS 'EIR which have not been constructed.
· IA-5 - If a subsequent traffic Phasing Plan demonstrates that certain circulation improvements should be
included in a different phase of Specific Plan development (accelerated or delayed) or that a circulation
improvement can be substituted, the mitigation Phasing Plan in Table 4.12-10 of thc Final EIS'EIR (see
Table 5 at the end of the Mitigation Monitoring and Reporting Program) ma)' be amended, subject to
approval of the City of Tustin and any other affected jurisdictions, provided that the same level of traffic
mitigation and traffic capacity would be provided.
· IA-7 - Each Specific Plan project would contain, to thc satisfaction Ill' the City of 'l'ustin and or City of
h'vinc, as applicable, a pedestrian circulation component showing pedestrian access to regional hiking
Ciiy of Tusffn o Page 54
3. Environmental Analysis
trails, parks, schools, shopping areas, bus stops, and.'or other public facilities.
· T:C-I - In conjunction with the approval of a site development permit, the City of Tustin shall require each
developer to provide traffic operations and conn'ol plans that would minimize the traffic impacts of
proposed construction activity. The plans shall address roadway and lane closures, truck hours and routes.
and notification procedures for planned short-term or interim changes in traffic patterns. The City of Tustin
shall ensure that thc plan would minimize anticipated delays at major intersections. Prior to approval, the
Cit.,,' of Tustin shall review the proposed traffic control and operations plans with an5, aflbcted jurisdiction.
· T.C-2 -. The City of Tustin and the C~ty of lrvine, as applicable (for that portion of the reuse plan area
within Irvine), shall ensure that the arterial intersection improvements required in 2005 and 2020 and as
indicated in Fables 4.12-7 and 4.12-9 are implemented for their respective jurisdictions according to the
cumulative ADT thresholds identified in each table and according to the fair share basis noted. The ADT
threshold represents the traffic volume which would result in an impact and the faire share percentage
reflects thc percent of the traffic impact resulting ti'om the Reuse generated traffic. In some cases, Reuse
traffic woukl generate 100 percent of the impact, thereby assmning full financial responsibility for
identilied improvements. In other cases, Reuse traffic would generate only a fraction of the traffic
impacting the intersection and financial responsibility would correspond.
· T.C-3 - The City of Tustin and the City of Irvinc, as applicable (for that portion of the reuse plan area
within irvine), shall contribute, on a fair share basis, to improvements to freeway ramp intersectio,~s as
listed in Table 4.12-8. The method of implementing improvements, e.g., restriping, ramp widening, shall
based on design studies, in association with Cahrans.
· T. C-4 - The (.7it3' of Tustin and the City of lrvinc, as applicable (for that portion of the reuse plan area
within Irvine), shall ensure that all on-site circulation system improvements tbr the reuse plan area assumed
in the 2005 and 2020 traffic analysis and as shown in Table 4.12-10 of the Final EIS'EIR (see Table 5 at
the end of the Mitigation Monitoring and Reporting Program) arc implemented according to thc cumulative
ADT thresholds identified in the table. Under this Phasing Plan, the City of Tustin shall monitor all new
development within thc site, accounting for the cumulative AI)T generated by development projects. As
each ADT threshold is reached, the roadway improvements listed in 'Fable 4.12-10 of the Final EIS. EIR
(see Table 5 at thc end of the Mitigation Monitoring and Reporting Program) shall be constructed befi~re
any additional projects within thc reuse plan area would be approved.
· T C-52 - Prior to approval of a site development permtt or vesting tract, except for financing o1' conveyance
purposes, lbr all land usc designation areas in Ahernative I with the exception of the Learning Village,
Community Park, and Regional Park. a project developer shall enter into an agreement with the City of
Tustin and City of h'vine, as applicable (for that portion of the reuse plan area within l~'ine) which assigns
irnprovemcnts required in the ElS I':lR to the development site and which requires participation in a fair
share mechanism to design and construct required on-site and arterial improvements consistent with the
AD'F generation thresholds shown in Tables 4.12-7, 4.12-8, 4.12-9, and 4.12-10 (see Tables 2 through 5 at
the end of the Mitigation Ylonitormg and Reporting Program).
· T (;-61 ' The City of Tustin and the City of lrvine, as applicable (for that portion of the reuse plan area in
irvine), will monitor new development within the reuse plan area, accounting for the cumulative ADTs
generated by development projects within the reuse plan area. As each cumulative ADT threshold shown
in 'Fable 4.12-10 (see Table 5 at the end of the Mitigation Monitoring and Reporting Program) is reached,
the roadway improvements listed shall be constructed before any additional projects within the reuse plan
area are approved.
· T'C-7 - The (Tity of Tustin shall adopt a trip budget for individual portions of the reuse plan area to assist in
the monitoring of cumulative Al)Ts and the amount and intensily of permitted non-residential uses as
Table references in the mitigation measures have been changed t?om the Final
FEIS EIR to match the correct table numbers in the FEIS. EIR.
City of 2~ustin · Page 55
3. Environmental Analysis
c)
d)
evaluated in the EIS.'EIR.
· T C-8 - Alternative improvements that provide an equivalent level ofmitigation in 2005 or 2020 to what is
identified in Tables 4-12-7, 4.12-8. and 4.12-9 may be identified in consultation between the City of Tustin
and the City of Irvine, as applicable, and the impacted jurisdiction.
· T C-9 -The City of Tustin shall enter into agreements with Caltrans and the cities ofSanta Ana and Irvinc
to ensure that off-site roadway improvement programs needed to mitigate the effects of the proposed
allernative are constructed pursuant to improvement program established by the respective jurisdiction.
· No mitigation measures arc necessary for infill developments.
· A Statcmenl of Overriding Consideration is required.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS Ell>, lbr MCAS-Tustin (Pages 4-139 ti) 4-163 and 7-32 to7-41)
Result in a change in air traffic patterns, including either an increase in traffic levels or a change in
location that results in substantial safety risks?
Development anticipated by the Housing Element Update involves the development of 3.298 housing units on
parcels of land throughout the City. The anticipated amount of development would not result in an5' changes to
air traffic patterns, nor would the anticipated amount of development result in any substantial safety risks
related m aircraft traffic. Compliance with the Airport Environs l.and L'sc Plan standards under existing (.;it3'
ordinances would reduce potential impacts to a level of insignificance.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: 'l'ustin City (2ode
Tustin General Plan
I lousing Element Update
Program EIS. EIR for MCAS-Tustin (Pages 3-13 to 3-17)
Substantially increase hazards due to a design feature (e.g. sharp curves or dangerous intersections) or
incompatible uses (e.g. farm equipment)?
Any needed traffic improvements associated with the anticipated development would be constructed to the
Cily's existing roadway safe() slandards. With respect to the development at the Reuse Plan area. the Program
EIS l!lR for MCAS-Tustin includes mitigation measures relaxed to traffic control plans and needed traffic
improvements ti) accommodate the implementation of the Reuse Plan.
\\'ith respect to infill developments, compliance with the City's existing public works standards, zoning codes,
and fire codes would reduce potential impacts ti) a level of insignificance.
In summary, the implementation of thc ltousing l£1ement Update would not rcsuh in any impacts beyond those
identified in thc Program ElS Ell>, tbr MCAS-Tustin. No further mitigation measures would be required beyond
those idcntified in the Program EIS EIR for MCAg-Tustin.
Mitigation Measures Monitoring Required:
· T C-I - In coujunction with the approval ora site development permit, the City of Tustin shall require each
developer to provide traffic operations and control plans that would minimize the traffic impacts of
proposed construction actMty. The plans shall address roadway and lane closures, truck hours and routes,
City of Tustin · Page 56
3. Environmental Analysis
and notiiication procedures for planned short-term or interim changes in traffic panerns. The City of Tustin
shall ensure that the plan would minimize anticipated delays at mgjor intersections. Prior to approval, thc
City of Tustin shall review the proposed traffic control and operations plans with any affected jurisdiction.
· No mitigation measures arc necessary tbr infill developments.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program EIS'EIR for MCAS-Tustin (Pages 4-139 to 4-163 and 7-32 to7-4 I)
e) Result in inadequate emergency access?
g)
l lousing dcvelopmem prqjccts would be required to contbrm to existing City regulatious that specify adequate
emergency access measures. Compliance with the City's public works standards and the Uniform Fire Codes
related to emergency access would reduce potential impact to a level of insignificance.
Ylitigation Measures Monitoring Reqtfired:
· No mitigation measures are necessary.
Sources: Tustin (';it3' Code
Tustin General Plan
Housing Element Update
Program EIS'EIR for MCAS-Tustin
Result in inadequate parking capacity?
Development anticipated by the Housing Element Update involves thc development of residential dwelling
units. Each development would be required to satisfy City parking standards under existing City regulations.
Compliance with thc City's parking standards would ensure adequate parking capacity be provided as
developmcnls occur.
Mitigation Mcasurcs Monitoring Requircd:
· No mitigation measures are necessary.
Sources: Tustin City Code
'fustin General Plan
Housing Element Update
Program EIS"EIR for MCAS-Tustin (Pages 4-4 to 4-7)
Conflict with adopted policies, plans, or programs supporting alternative transportation (e.g. bus
turmmts, bicycle racks)?
City of'?ustin residents have access to several tbrms of alternative transportation such as the Metrohnk, buses,
and bicycle paths. The development of 3.298 housing units would impact public transit by creating additional
demand for bus service. At the same time, the new arterial roadways proposed through the Reuse Plan area
would provide opportunities for fmure bus routing, serving persons residing and working in the Reuse Plan
ama. fhe new routes would provide improved service with more direct routes for riders not associated with the
Reuse Plan. Thc ()range County Transportation Agency (OCTA) prepares regular updates of the countywide
transit system. Bus stops woukl be included in the updates and woukt be accommodated as devclopmem
occurs. In addition, a commuter rail station located at the corner of Jamboree Road and Edinger Avenue would
provide transit opportm~ities to resident and workers (currently under construction).
City of Tusffn · Page 57
3. Environmental Analysis
3. f6
a)
e)
b)
The Reuse Plan also idcntifics additions to the bikcway system, providing additional segments and greater
connectivity. Thc added hike trails would provide an overall benefit to the County hike trail system. Infill
developments would be located in the established area, and it would be unlikely to conflict with adopted
policies, plans, or programs supporting alternative transportation.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program ElS 'EIR for MCAS-Tustin (Pages 4-139 to 4-163 and '-32 to7-41 )
UTILITIES AND SERVICE SYSTEMS
Exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board?
Result in a determination by tile wastcwater treatment provider, which serves or ma)' serve the project
that it has adequate capacity to serve the project's projected demand in addition to the provider's
existing commitments?
The Orange Count,',' Sanitation District (()(,;SD) provides sewage treatment service to the City of'l ustin.
Sewage from the Ciw is diverted to Reclamation Plant Number 1 located in the City of Fountain Valley.
For the MCAS-Tustin Reuse Plan area. the Program EIS'EIR for MCAS-Tustin indicates that implementation
of the Reuse Plan will cause additional demand on the existing sewer system from increased sewage flows. The
County Sanitation District has confirmed that sewer treatment fiacilities will be adequate to accorrmtodate the
Reuse Plan development. As in the infill areas, the development would create an insignificant impact on
wastewater treatment facilities.
Mitigation Measures.Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
'rustin General Plan
llousing Element Update
Program ElS EIR for MCAS-Tustin {Pages 4-32 to 446')
Require or result in the construction of new water or wastewater treatment facilities or expansion of
existing facilities, the construction of which could cause significant environmental effects?
Increased water consumption would result in a higher demand for water resources. Most housing development
under the I lousing Element Update would occur within the MCAS-Tustin Reuse Plan area. The Reuse Plan is
located within tile water se,'vice jurisdiction of the h'vine Water Ranch Districts (IRWD). Ihe IR\VI) imports
approximately 67 percent of its water via Metropolitan Water District (MWD). The remaining 33 percent is
predominantly pumped from local wells. Reclaimed water for non-domestic uses such as for agriculture and
landscape irrigation is treated at the district's Michelson Reclamation Plant and used as reclaimed water.
Potable Water supply is purchased by the IRWI) fi'om the M\VD distribution system or pumped from local
wells.
Sewer lines in Tustin are os~ned and maintained by tile Orange County Sanitation District (OCSI)) and Irvinc
Ranch Water District. With the implementation of the MCAS-Tustin Reuse Plan. a new water and sanitary
City of Tustin · Page 58
3. Environmental Analysis
c)
~)
sewer system would be necessary. The only impacts would be construction level; these impacts would be
mitigated to a level of insignificance by existing City regulations to reduce construction impacts. With respect
to the infill areas, replacement of existing facilities with new residential units would not create the need for a
new water or wastcwater facility.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary'.
Sources: Tustin City Code
Tustin General Plan
Housing Elemcnl Update
Program ElS EIR for MCAS-'[ustin (Pages 4-32 to 4-46)
Tustin Water Department and Irvine Ranch \rater District
Require ur result in the construction of new storm water drainage facilities or expansion of existing
facilities, the construction of which could cause significant environmental effects?
Storm drainage is proxided through reinforced concrete pipes and open chanucls th. roughout the City. Storm
water flows arc directed towards Orange County Flood Control open channels or indirectly to the Santa Ana
River. Storm water in the City generally flows in a general southwesterly direction towards thc Pacific Ocean.
The City maintains an NPDES co-permit with Orange CounB, for storm drain fhcilities serving 'Fustm.
New development in the MCAS-Tustin Reuse Plan would require improvement to the existing storm drain
system. A conceptual storm drain plan has been developed in coordination with the Orange County Flood
Control District (OCFCD). '[he improvement would include five major drainage areas with mainline facilities
and improvements to the ()CFCD Barranca Channel. New retention basins would also be incorporated to
handle storm Ilows from the golf village area of the Reuse Plan. Other on-site ihcilities would discharge into
the County's existing regional thcilities.
The only impacts would be construction level; these impacts would be mitigated to a level of insignificance by
existing City regulations lo reduce construction impacts. With respect to thc infill areas, replacement of
existing facilities with new residential units would not create the need for a new water or wastewater facilily.
New developmcn! in the infill areas would utilize existing storm drain lines. Compliance with NPDES
requirements through the development review process would reduce potential impacts lo a less than significant
level.
Mitigation Measures 'Monitoring Required:
· No mitieation measures are necessary.
Sources: Tustin City Code
Tustin General Plan
Housing tilcment Update
Program ElS EIR for MCAS-Tustin (Pages 4-32 to 4-46)
llave sufficient water supplies available Io serve the project from existing entitlements and resources, or
are new or expanded entitlements needed?
Most of the new housing development would occur within the MCAS-Tustin Reuse Plan area. The area is
located within the water service jurisdiction of the Irvine Water Ranch Districts (IR\VI)). The IRWD imports
City of Tustin · Page 59
3. Environmental Analysis
g)
approximately 67 pcrcent of its water via Metropolitan \Vater District (M\VD). The remaining 33 percent is
predominantly pumped from local wells. The increase in water consumption that may occur with new
development anticipated by the Housing Element Update would not result in significant impacts to local and
imported water supplies requiring new or expanded entitlements. According to thc IRWD, there is adequate
water capacily to supply civilian reuse developlnent. In the infill areas, no impact to the existing water supply
is anticipated.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
'fustin General Plan
}lousing Element Update
Program EIS'EIR tbr MCAS-Tustin (Pages 4-32 to 4-46)
Tustin Water Department and lrvine Ranch Water District.
Be served hy a landfill with sufficient permitted capacity to accommodate the project's solid waste
disposal needs?
The Frank R. Bowerman Landfill is the primary ihcility that receives solid waste from Tustin. This landfill is
scheduled to be closed in the )'car 2024. Based upon thc 1998 Count)' of Orange determination, only about 18
percent of thc maximum capacity hast been used. Accordingly, the landfill has ample capacity tn accommodate
solid waste generated by the l lousing Element Update. Further, the City has adopted a Source Reduction and
Recycling Element (SP, RE) that provides implementation programs tbr achieving a 50 percent reduction in
City's solid waste stream. All new development is required by existing City regulation to comply with the
SRRE programs. Therefore, impacts related to solid waste would be less than significant.
Mitigation Measures. Monitoring Required:
· No mitigation measures arc necessary.
Sources: Tustin CIE,' Code
Tustin General Plan
Housing Element Update
Program F. IS liIR tbr MCAS-Tustin (Pages 4-32 to 4-46)
Comply with federal, state~ and local statutes and regulations related to solid waste?
The developments anticipated by the Housing Element Update include 3,298 additional units. Although there
would be increased generation of solid waste due to the proposed project, solid waste disposal facilities in
Orange County would have ample capacity to accommodate solid waste generation. All new development
would be subject to the existing SRRE requirements and thus would reduce solid waste generation. Thc
impacts are nor siguificant.
Mitigation Measures Monitoring Required:
· No mitigation measures are necessary.
General Implementation Requiretnents for Items a throu~.,h ~: In support of proposed development at the former base,
the Reuse Platt'Specific Plan requires backbone utility systems to be provided concurrent wifl~ demand. The
implementation of the llotlsing Element L:pdate will be requixed to comply with the following implementation measures:
City of Tustin · Page 60
3. Environmental Analysis
· Prior to a final map recordation (except tbr financing and rcconveyance purposes), thc dcvelopment
applicant shall enter into an agreement with the City of 'l'ustin and Cit')' of Irvine and any appropriate
regional utility agencies, districts, and providers, as applicable, to dedicate all easement, rights-of-way, or
other land determined necessary to construct adequate utility infrastructure and facilities to serve the
project as determined by the city, agency, district, or other providers.
· Prior to any final map recordation (except for financing and conveyance purposes), the development
applicant shall enter into a secured agreement with the cities of Tustin and, or lrvine, as applicable, to
participate on a pro-rated basis in construction of capital improvements necessar;5' to pro~idc adequate
utiliw lhcilities.
· Prior to thc issuance of permits tbr any public improvements or development project, a development
applicant shall submit to the City of Tustin and City of lrvine, as applicable, information from IRWD
which outlines required facilities necessary to provide adequate potable water and reclaimed water service
It) thc development.
· Prior to the issuance of the certificates of use and occupancy, the project developer shall ensure that fire
hydrants capable of flows in amounts approved by the OCFA arc in place and operational to meet fire flow
requirements.
· Prior to thc issuance of permits for any public improvements or development project, a development
applicant shall submit to thc City of Tustin and City of lrvine, as applicable, information fi'om IRWI),
OCSD, or the City of Tustin which outlines required facilities necessary to provide adequate sanitary
sewage ser¥icc to the development.
· Prior to the issuance tlc grading permits or approval of an;5' subdivision map (except tbr financing and
reconveyance purposes), whichever occurs first, for development within the 100-year flood plain, grading
and drainage systems shall be designed by the project developer such that all building pads would be salh
from inundation from runoff from all storms up to and including the theoretical 100-year storm, to the
satisfhction of the City of Tustin Building Division or the lrvine Public Works Department, as applicable.
Grading permits or subdivision maps generated for financing and rccom'eyance purposes are exempt.
· Prior to the approval of any applicable subdivision map (except ibr financing and conveyance purposes),
the developer-applicant shall design and construct local drainage systems for conveyance of thc 10-year
runolE If the facility is in a local sump. it shall be designed to convey the 25-year runoff:
· Prior to any grading lbr an;5' new development, the lbllowing drainage studies shall bc submitted to and
approved by the City of Tustin, City of Irvine. and or OCFCD, as applicable:
(1) A drainage study including diversions (i.e., off'site areas that drain onto and. or flu'ough the
project site), with justification and appropriate mitigation lbr any proposed diversion.
(2)
A drainage study evidencing that proposed drainage patterns would not resull in increased
100-year peak discharges within and downstream of the project limits, and would not worsen
existing drainage conditions at storm drains, culverts, and other street crossings including
regional flood control facilities. The study shall also propose appropriate mitigation for an)'
increased runoff causing a worsening condition of any existing facilities within or
downstream of project limits. Implementation of appropriate interim or ultimate flood control
infi'astructurc construction must be included.
(3)
Detailed drainage studies indicating hoax, in conjunction with tile drainage conveyance
systems including applicable swales, channels, street flows, catch basins, storm drains, and
flood water retarding, building pads are made safe from runoff inundation which may be
expected l'rom all storms up to and including tile theoretical 100-year flood.
Ciiy of Tustin · Page 61
3. Environmental Analysis
Sources: Tustin City Code
Tustin General Plan
Housing Element Update
Program EISiEIR for MCAS-Tustin (Pages 4-32 to 4-46)
MANDATORY FINDINGS OF SIGNIFICANCE
Does the project have the potential to degrade the quality of tile 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 elinfinate 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?
3. f7
a)
b)
Does the project have impacts that are individually 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.)
e)
Does the project have environmental effects, which will cause substantial adverse effects on human
beings, either directly or indirectly?
Tile adoption of the I[ousing Element Update would not cause negative impacts, ltowever the implcmentalkm
of the MCAS-Tustin Reuse Plan through the General Plan Amendment and subsequent zoning could cause
significant impacts to the environment. These impacts are identified in the Program EIS'EIR for MCAS-Tustin,
and there are no additional impacts that would be created. On January 16. 2001, the City Council considered
the benefits of thc General Plan Amendment incorporating the Reuse Plan and balanced those benefits against
the unavoidable effects related to aesthetics, cultural, and paleontological resources, agricultural resom'ces.
l'raffic circulation, and air quality. A Statement of Overriding Consideration was adopted for the General Plan
Amendment. A Statement of Overridiqg Consideration will be required for approval of the I Iousing Element
l./pdate
Mitigatton Measures Monitoring Required:
· No mitigation measures are necessary.
Sources: Tustin City Code
'Fustin General Plan
I lousing Element Update
Program EIS 'EIR for MCAS-Tustin 0~ages 5-1 to 5-1 I)
City of 7~stin o Page 62