HomeMy WebLinkAbout1995-10-10 - AGENDA REPORTS - AMEND CIRCULATION ELEMENT GP (2)AGENDA REPORT
City Manager Approv:
Item to be presented
Bahman Janka
UNFINISHED BUSINESS
DATE: October 10, 1995
SUBJECT: AMENDMENTS TO THE CIRCULATION ELEMENT OF THE GENERAL
PLAN
DEPARTMENT: Building and Engineering Services
At the January 3, 1995 City Council Study Session, staff presented the preliminary findings of
the Center City Traffic and Modeling Study to be used in the environmental document for the
proposed amendments to the Circulation Element of the General Plan. The presentation
included highlights of the traffic study for four alternative circulation networks recommended
or endorsed by the Citizens Transportation Advisory Committee, the Planning Commission, and
the City Council. The presentation at that time concluded that neither the current Circulation
Element nor any of the four potential circulation plans would meet the City's General Plan level
of service goals (LOS -D). The City Council directed staff to prepare additional analysis and try
to develop a network that best meets the future circulation goals of the valley.
ANALYSIS
The attached technical report documents the highlights of the traffic study prepared for the
proposed amendments to the Circulation Element of the General Plan. Two additional
scenarios (Scenarios 5 and 6) were developed in an attempt to address the capacity deficiencies
realized in the first four alternatives. The enhancements in these alternatives included
addition of more roadway links, provision of expanded roadway sections along some arterials,
assumptions regarding enhanced signal coordination techniques to improve the traffic now, and
assumptions relative to future Transportation Demand Management strategies.
At this point, staff believes that the traffic modeling analyses prepared for the proposed
amendments are complete and are ready to be used in preparing the environmental document
needed for this project. The environmental document will assess the various environmental
impacts associated with the preferred alternative (Scenario 5) as well as some of the other
alternatives.
Continued To, /'-P ��av
4, - Agenda item -17
AMENDMENTS TO THE CIRCULATION ELEMENT
OF THE GENERAL PLAN
October 10, 1995 - Page 2
Staff is currently preparing the Request For Proposals for the necessary EIR work. Due to the
reduced staffing in the Planning Division of the Community Development Department, and
because of Mr. Cline's in-depth familiarity with this matter and his extensive experience with
Santa Clarita's circulation issues, it is intended to use the services of Mr. Ed Cline and other
staff at Willdan Associates in overseeing and managing the EIR consultant's work in
preparation of the environmental document. The actual fee for the future EIR consultant is not
known at this time, but the following is an estimate of the total budget that needs to be
allocated for the remainder of this project:
• Willdan Associates: Oversee/Contract Management including contingencies $30,000
• Potential additional traffic analysis/modeling 10,000
• EIR consultant 50,000
• All EIR and other contingencies 10,000
Total $100,000
1. Receive the presentation, make comments, ask questions, permit comments from the public
and provide guidance or direction for the balance of the General Plan Amendment process;
2. Authorize staff to proceed with recruiting an EIR consultant to prepare the necessary
environmental document for amending the Circulation Element of the General Plan using
the already prepared traffic study;
3. Appropriate $100,000 to Account No. 01-5402-227, traffic contractual services, for
preparation of the environmental document from General Fund Contingency Account
No. 01-4101-290; and
4. Authorize the City Manager to execute an agreement with Willdan Associates to oversee the
preparation of the EIR for an amount not to exceed $30,000.
ATTACHMENTS
Center City Traffic Study Update
Proposal from Willdan Associates
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CITY OF SANTA CLARITA
INTEROFFICE MEMORANDUM
TO: Anthony J. Nisich, City Engineer
FROM: Ed Cline, Traffic Engineer
DATE: September 28, 1995
SUBJECT: CENTER CITY TRAFFIC STUDY UPDATE
BACKGROUND
The process to reassess the centre city circulation network began following Council direction in
1992 to find an alternative to the Caltrans proposed State Route 126 through the City.
Subsequently, the City Council made a referral to the newly formed Citizens Transportation
Advisory Committee (CTAC) to receive further community input regarding an alternative
east/west roadway network in the City. The recommendations from CTAC were presented to
the Planning Commission in July 1993. The Planning Commission conducted public hearings
on this topic and made refinements in the alternative roadway patterns to be studied and
forwarded its recommendations to the City Council. On December 21, 1993, the City's Planning
Commission recommended a network that the Council should consider in studying an
amendment to the Circulation Element of the City's General Plan. The Planning Commission's
recommendation followed several Planning Commission public hearings considering this issue
and an all -day field trip in which Commissioners traveled throughout the City to visit planned
roadway sites. The Commission considered alternatives put forth by the City Manager
appointed CTAC and those proposed under the various development proposals, as well as
comments from the public in arriving at their recommendation.
On September 13, 1994, City Council awarded a contract to Meyer, Mohaddes Associates, Inc.,
to conduct a traffic study for the purpose of examining four alternative road networks in an
effort to recommend a superior acceptable highway system which would eliminate State Route
126 from the City's General Plan, while providing a suitable alternative east/west connector
with a network of supporting arterial highways was essential to the mobility of Santa Clarita
Valley.
The four road networks to be considered in the study were:
1. CTAC recommended network with a northerly bypass.' (Exhibit W)
2. Revised network/Santa Clarita Parkway with a northerly bypass' (Exhibit "B")
3. Revised network/Santa Clarita Parkway without a northerly bypass.' (Exhibit "B")
4. Modified CTAC network with extension of Magic Mountain Parkway and a northerly
bypass.' (Exhibit "C")
The northerly bypass refers to a six -lane alternate highway to the Route 126 alignment included
in the current General Plan.
Anthony J. Nisich
September 28, 1995
Page 2
In addition to the four alternative networks which were to be tested, the contract called for a
test of the existing circulation network to determine its adequacy and to form the basis of
comparisons for each of the alternatives. The existing circulation element is depicted in
Exhibit "D."
All network tests were to assume the build -out of the highway systems in each scenario and
were to use the latest land -use information available from both the City and the County. Land -
use information assumed build -out at the current General Plan level.
All five scenarios were tested. The tests were conducted using the Santa Clarita Valley Traffic
Model. This model is the latest generation of models that resulted from the blending of the City
of Santa Clarita Model and the Los Angeles Country Model.
The results of these tests were presented at the January 3, 1995 City Council workshop
scheduled for this purpose. It was shown at that time that neither the current Circulation
Element nor any of the four potential circulation plans would meet the City's General Plan level
of service goals. (LOS -D)
Based on those conclusions, a fifth potential plan was developed and tested (Exhibit "E"). This
scenario (No. 5) was developed from Scenario No. 3, known as the Santa Clarita Parkway
Alternative. Scenario No. 3 was selected because it was shown to offer the greatest promise for
a comprehensive solution and contained some of the basic roadway alignments and features
contained in the recently approved Porta Bella project.
Scenario No. 5 contains additional roadways to existing General Plan roadways (planned and
existing) which appear reasonable and prudent. Scenario No. 5 also contains certain
assumptions relative to improved traffic management systems and Transportation Demand
Management strategies. These additional planned roadways, enhancements, and other
assumptions are shown below:
Newhall Ranch Road was assumed as an "enhanced" or "augmented" six -lane arterial from
the I-5 to Golden Valley and as a four -lane arterial from Golden Valley to Whites Canyon
and as a regular six -lane arterial from Whites Canyon to SR -14.
For the purpose of assigning roadway capacities in the model runs, an "augmented" six -
lane roadway was assumed to have three thru lanes, one right -turn only lane, and two left -
turn only lanes at all intersections. In addition, it was assumed that depending on the
location of access points and driveways in the mid -block, the fourth thru lane could
function as a deceleration and acceleration lane to serve those land uses. Depending on
the proximity of intersections and mid -block access points, the fourth lane may or may not
be continuous throughout the corridor. Examples of this type of treatment can be seen
now adjacent to the Valencia Town Center Mall on northbound McBean Parkway north of
Valencia Boulevard, and adjacent to the Bouquet Center on Bouquet Canyon Road north
of Newhall Ranch Road.
Anthony J. Nisich
September 28, 1995
Page 3
• Golden Valley Road was assumed as an "augmented" six -lane arterial from Newhall Ranch
Road to Sierra Highway and as a regular six -lane arterial from Sierra Highway to SR -14
Freeway.
• Placerita Canyon was removed from the arterial network as a continuous street, due to
its recent closure to through traffic.
• The following new links (existing or future links previously not in the model network) were
coded into the network:
- Rockwell Canyon Road extension, from Valencia to McBean Parkway (four -lane
secondary).
- Cinema Drive, from Valencia to Bouquet Canyon (two-lane collector).
- Creekside Drive, from Mc Bean to Valencia (two-lane collector).
- Rainbow Glen, from Saluted Canyon to Sierra Highway (two-lane collector).
- Golden Triangle, from Santa Clarita Parkway to Rainbow Glen (four -lane secondary).
Scenario No. 5 is depicted in Figure Nos. 12 and 13 from the consultant's report. Figure No. 12
shows the forecasted traffic volumes expressed in 24-hour data. Figure No. 13 depicts the
amount of the roadway system that would operate at an acceptable level of service (shown as
green) and the remaining roadway segments that are forecasted to be operating over the desired
level of service goal (shown as red).
Scenario No. 5, while not depicting an absolutely perfect solution, is believed to represent a
reasonable approach to the basic need to provide a Circulation Element that supports the City's
Land Use Plan.
After the development of Scenario No. 5, additional roadway pattern refinements were studied
to assess if a superior network can be developed. This plan is referred to as Scenario No. 6 from
the City's study (Exhibit "F"). Scenario No. 6 is an adaptation of the current Circulation
Element with the following revision and assumptions:
Extension of Newhall Ranch Road to Santa Clarita Parkway to Golden Valley Road as an
"augmented" six -lane arterial up to Sierra Highway, and as a regular six -lane arterial from
Sierra Highway to SR -14 Freeway.
Extension of Magic Mountain Parkway as a six -lane major highway to Via Princessa and
as a four -lane secondary highway to Placerita Canyon.
The following new links (existing or future links previously not in the model network) were
coded into the network:
Cinema Drive, from Valencia to Bouquet Canyon (2 -lane collector).
- Creekside Drive, from McBean to Valencia (2 -lane collector).
Rainbow Glen, from Soledad Canyon to Sierra Highway (2 -lane collector).
- Golden Triangle, from Santa Clarita Parkway to Rainbow Glen (4 -lane secondary).
Anthony J. Nisich
September 28, 1995
Page 4
Placerita Canyon was removed from the arterial network as a continuous street, due to
its recent closure to through traffic.
Additionally, the basic assumptions dealing with traffic system improvements and
transportation demand management incorporated into Scenario No. 5 were used to develop
Scenario No. 6. Figure Nos. 14 and 15 from the consultant's report depict the roadway network
of Scenario No. 6 expressed in terms of forecasted 24-hour traffic volumes (Figure No. 14) and
projeeted levels of service (Figure No. 15).
Scenario No. 6 is predicted to operate at a slightly less overall level of service than Scenario
No. 5. There are several other performance criteria that assist in determining the better of the
two plans. These performance criteria are shown below:
A comparison of the two potential circulation plans (Scenario No. 5 and Scenario No. 6) from the
overall level of service perspective and from the analysis of the other measurable performance
data, finds that Scenario No. 5, the Revise Santa Clarita Parkway Alternative, is the preferred
alternative.
Some of the advantages Scenario No. 5 has over Scenario No. 6 are as follows:
Scenario No. 5 is more consistent with the present Circulation Element.
Revised Santa
Santa Carita
Santa Clarita
Clarita
Parkway/
Description of Scenario
Unmodified
Parkway W/O
Parkway
Golden
Build -out
Bypass
W/O Bypass
Valley
Network
Network
Network
Network
Scenario 0
Scenario 3
Scenario 5
Scenario 6
Vehicle Miles of LOS D or
8,858
9,054
8,767
9,382
worse (1000's)
Vehicle Miles of LOS E or
7,365
7,802
7,547
7,695
worse (1000's)
Vehicle Miles of Travel
23,813
23,814
23,783
23,746
(1000's)
Vehicle Hours of Travel
724
744
741
739
Average Speed of
35.5
35.4
35.4
35.5
Freeways
Average Speed of
32.0
29.0
29.3
30.0
Arterials
Overall Average Speed
34.7
33.6
33.7
33.9
A comparison of the two potential circulation plans (Scenario No. 5 and Scenario No. 6) from the
overall level of service perspective and from the analysis of the other measurable performance
data, finds that Scenario No. 5, the Revise Santa Clarita Parkway Alternative, is the preferred
alternative.
Some of the advantages Scenario No. 5 has over Scenario No. 6 are as follows:
Scenario No. 5 is more consistent with the present Circulation Element.
Anthony J. Nisich
September 28, 1995
Page 5
Many of the proposed revisions were incorporated into the recently approved Porta Bella
Development project.
The majority of Rio Vista has been eliminated and realigned to a more direct connection
with State Route 14. The revised route is called Santa Clarita Parkway.
Scenario No. 5 has a significant proposed change to the current Circulation Element which
is the reduction in the proposed width of Newhall Ranch Road between Golden Valley Road
and Whites Canyon Road. The proposed change is from the current eight -lane expressway
configuration to a four -lane secondary highway similar to Decoro Drive.
Staff recommends that the City Council receive the presentation, make comments, and ask
questions, permit comments from the public and provide guidance or direction for the balance
of the study effort.
Jul g
Exhibits A, B, C, D, E and F
Figures 12, 13, 14, and 15 from consultant's report
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CTAC RECOMMENDED NETWORK
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Cc_ t EXHIBIT B
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;L REVISED NETWORK/
SANTA CLAR,ITA PARKWAY
(WITH AND WITHOUT NORTHERLY BYPASS)
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EXHIBIT C
MODIFIED CTAC NETWORK W/
EXT. OF MAGIC MOUNTAIN PKWY.
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EXHIBIT D
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EXISTING CIRCULATION ELEMENT
I
NETWORK
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XHIBIT E
s(�,-- i �� t ,,, SI s �� ,. •�. � � ,.�„..r :RECOMMENDED NETWORK
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Red- Freeway r X L e L
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Blue- Major Highway Reeommeod d / ��w6r1.
Green- Secondary Highway °'° °
Projected Daily Volumes in 1000's '
M
Meyei MahaddesAssociafes/nc. Santa Clarita Center City' Circulation Plan Study Figure
, Buildout Daily Volumes 12
Tmfric Engineenng a Tma pe .tm Planning
Scenario 5
Red- L
Green
OW M At i i M i m i i i i i
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M MeyeiibloheddesAssociafes,/nc, Santa Clarita Center City Circulation Plan Study Figure
Buildout Levels of Service 13
TmfAc Engineering • T2nsportatlon Planning
Scenario 5
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EXHIBIT F
' f SANTA CLARITA/GOLDEN VALLEY
ALTERNATIVE NETWORK`
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KEY a -x Pro�ecfed Vojul??tS
Red- Freeway far E X h+b -�
Pink- Expressway
Blue- Major Highway '��,° • 7 i�a��ordpM �a��y
Green- Secondary Highway saM 1�t d
Projected Daily Volumes in 1000's Iv8WOrk
MSanta Clarita Center City Circulation Plan Study Figure
hleyei MohaddesAssociafes, fnc. Buildout Daily Volumes
Taft Engineering ,• Tnansponafion Planning Scenario 6 1 14
88
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KEY a -x Pro�ecfed Vojul??tS
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Pink- Expressway
Blue- Major Highway '��,° • 7 i�a��ordpM �a��y
Green- Secondary Highway saM 1�t d
Projected Daily Volumes in 1000's Iv8WOrk
MSanta Clarita Center City Circulation Plan Study Figure
hleyei MohaddesAssociafes, fnc. Buildout Daily Volumes
Taft Engineering ,• Tnansponafion Planning Scenario 6 1 14
KEY
Red- LOS E & F (v/c > 0.87) iwm*wA%w;m
Green- LOS A -D (v/c<_ 0.87)
vlc Plod 4,-
Exh;bd F
5an40t d44^160 Idea Ua
Neiwoyk
Meyei MohaddesAssociafes, /ac,
Santa Clarita Center City Circulation Plan Study Figure
Buildout Levels of Service 15
TrsRic EnglneeMg • Transportation Planning
Scenario 6
IA7
September 20, 1995
WILLDAN ASSOCIATES ❑ ENGINEERS & PLANNERS
Professional Consulting Services Since 1964
Mr. Bahman Janka
City of Santa Clarita
23920 Valencia Boulevard, Suite 300
Santa Clarita, California 91355
Subject: Management of the Preparation of the Environmental Impact
Report for the Updated General Plan Circulation Element
Dear Mr. Janka:
Thank you for your interest in potentially having a Willdan Associates serve as the City's
project manager for the preparation of the focused Environmental Impact Report (EIR) for
the City's updated General Plan Circulation Element. Ms. Susan O'Carroll, Willdan's
Principal Environmental Planner, has reviewed the City's Initial Study for the project and
discussed the key issues with Mr. Ed Cline. She would be available to serve as the City's
project manager for the EIR. We have enclosed a copy of her resume for your
information.
Based on Ms. O'Carroll's discussions with Mr. Cline, we would propose performing the
desired project management duties on a time -and -materials basis, for an estimated not -to -
exceed fee of $22,000. This estimate is based on the following pricing assumptions:
• attendance by Ms. O'Carroll at up to eight public meetings regarding the
Circulation Element and/or EIR, including two CTAC meetings, two Planning
Commission meetings, two City Council meetings, and two meetings with other
concerned citizens groups;
• up to 40 hours of Ms. O'Carroll's time to be expended in reviewing the
Screencheck EIR;
• up to 20 hours of Ms. O'Carroll's time to be expended in reviewing the Draft EIR;
• up to 40 hours of Ms. O'Carroll's time to be expended in reviewing the response
to comments and the Final EIR;
• up to 12 hours of Ms. O'Carroll's time to be devoted to EIR consultant selection
and contracting; and,
up to 12 hours of Mr. Cline's time to be expended in support of the traffic analysis
in the EIR and associated project -related issues.
12900 CROSSROADS PARKWAY SOUTH •.SUITE 200 • INDUSTRY, CALIFORNIA 91746-3499 • (310) 908-6200 • FAX (310) 695-2120
September 20, 1995
Page 2
This pricing estimate has been tailored to meet the anticipated needs of the City.
However, should the proposed services exceed or fall short of your expectations of this
assignment, we would appreciate the opportunity to meet with you to review your
concerns, make the appropriate work program modifications, and revise the proposed
fee accordingly. If the proposal is acceptable to the City, the City may authorize the
proposed work by signing in the signature block provided and returning a signed copy
of this letter to Ms. O'Carroll.
Two originals of this letter proposal are being submitted. Please indicate the City's
approval and authorization to proceed by signing both and returning one to our office.
We appreciate the opportunity to submit this proposal and look forward to working with
you and the City on this project. If you have further questions, please contact Ms. Susan
O'Carroll at (310) 908-6216 or Mr. AI Warot at (310) 908-6209.
Respectfully submitted,
WILLDAN ASSOCIATES
V
Albert V. Warot
Manager
Planning Services
Alfonso hodriguez
Vice President
Enclosure
SOC:mk
956105\6690\P204
Approval and Authorization
to Proceed By:
CITY OF SANTA CLARITA
Signature
Date
SUSAN O'CARROLL, Ph.D
Principal Planner
As a Principal Planner in the Planning Services Division of Willdan Associates, Dr. Susan O'Carroll has more
than 12 years of planning and environmental experience. Primarily, Dr. O'Carroll is responsible for managing
the preparation of environmental documents, assisting in the preparation of planning studies, grant writing,
and assisting with community development work. She has served as Willdan contract city planning staff in
the City of Agoura Hills and as contract environmental staff for the City of Malibu. Recent environmental
projects Include:
County of Orange, Olinda/Olinda Alpha Landfill Access Road Environmental Impact Report
(EIR) - Dr. O'Carroll served as Project Manager for the preparation of an EIR for the Orange County
Environmental Management Agency for the access road to the County's expanded Olinda/Olinda
Alpha landfill near the City of Brea. This EIR addresses potential Impacts for the following areas:
air quality, biology, cultural resources, geology, hydrology, land use, aesthetics, lighting and glare,
public services and utilities, parks and recreation, noise and traffic. The visual analysis included
evaluating the extent of potentially visible segments using a computer terrain model. In the EIR, two
project options are analyzed In equal detail. The alternatives analyzed include operational and
routing alternatives.
• Los Angeles County Metropolitan Transportation Commission, 1993 Congestion Management
Program (CMP) Update Tiered Subsequent Program EIR - Dr. O'Carroll managed preparation of
both the 1992 and 1993 CMP EIR's. The 1993 subsequent EIR addressed the potential air quality,
energy, land use, public service, and traffic impacts of the addition of the deficiency plan component
to the CMP.
• City of Westlake Village, Westlake Spectrum Supplemental EIR - Dr. O'Carroll managed
preparation of a Supplemental EIR for amendments to the Westlake Spectrum Planned Development
Permit. The EIR focused on potential traffic impacts associated with a requested change in the land
uses in the business park.
• City of Westlake Village, Westlake North Specific Plan EIR Addendum - Dr. O'Carroll managed
preparation of the addendum to permit a Price Club project within the Specific Plan. This document
survived legal challenge by parties opposed to the project.
• City of Lynwood, American Recycling Technologies Soil Recycling Facility - Dr. O'Carroll
managed preparation of a Mitigated Negative Declaration for a facility designed to clean petroleum
cofltaminated soils using both thermal and biological processes.
• City of EI Monte, Tentative Tract No. 51734 - Dr. O'Carroll prepared a Mitigated Negative
Declaration for the proposed project. The work effort included preparation of detailed air quality,
noise, and traffic studies regarding the potential impacts of locating residential uses in proximity to
the existing rail line along Ramona Avenue in the City of EI Monte.
• County of Los Angeles, Palmdale Sheriff's Station - Dr. O'Carroll managed the preparation of
Mitigated Negative Declarations for two proposed sheriff station sites in the City of Palmdale.
• City of Rancho Cucamonga, Metrolink Station - Dr. O'Carroll prepared a Mitigated Negative
Declaration for a proposed Metrolink Station. The work effort included preparation of detailed
cultural resources, biological resources, and hazardous materials studies which were included in
the Technical Appendix to the document.
Prior to joining the Willdan team, Dr. O'Carroll was a supervisory associate for a private firm. As a project
manager, she was primarily responsible for EIRs and Environmental Impact Statements (EIS). Her duties
consisted of budget management; coordination with lead agency staff and the project sponsor; document
production; and attendance at city council, planning commission, and other lead agency meetings. She also
served as principal planner -in -charge for a number of projects, overseeing the work of the project manager.
Her management activities included environmental documents for;
• an EIR/EIS for a border crossing station;
• an EIS for a large-scale housing tract development in Santa Clarita, including public facilities and
commercial uses;
• an EIR for a shopping center in North Hollywood;
• an EIR for an office tower in downtown Los Angeles;
• EIRs for two hotel projects in downtown Los Angeles;
• the 1992 Los Angeles County Congestion Management Program EIR; and
• the Initial Study for the City of Los Angeles' Housing Linkage fee.
As a planner for the Southern California Rapid Transit District (SCRTD), Dr. O'Carroll assisted with current
bus route planning and prepared and assisted in the administration of the Department's $5 million budget
She was involved in administering and preparing the Overall Work Program, planning consultant contracts,
and the department's employee training program. She performed special Metro Rail and bus planning ad
hoc studies requested by the General Manager of the Board of Directors.
Dr. O'Carroll served for 7 years as a part-time faculty member for the Schools of Public Administration and
Urban and Regional Planning at the University of Southern California (USC). Dr. O'Carroll conducted
research on the relationship of law and planning, California's coastal wetlands, the determinates of regional
economic growth in Mexico, and the environmental policy.
EDUCATION
University of Southern California, School of Urban and Regional Planning
Ph.D., Planning (1989)
Master of Planning (1981)
University of California, Santa Barbara
Bachelor of Arts, Experimental Psychology (1977)
PROFESSIONAL AFFILIATIONS
American Planning Association
Association of Environmental Professionals