HomeMy WebLinkAboutMINUTES - 12172013 - SD.9RECOMMENDATION(S):
1. RECEIVE staff report, Development Program Report, dated November, 2013 (“DPR”) for the East County
Regional Area of Benefit, and East County Regional Area of Benefit Transportation Mitigation Fee Update report,
dated October, 2012 (“Nexus Study”), all in support of proposed Ordinance No. 2013-26, an ordinance adjusting fees
in the East County Regional Area of Benefit (“ECRAOB”) and reestablishing the boundaries of the ECRAOB.
[CDD-CP # 09-70], Project No. 0676-6P4011.
2. OPEN the public hearing, RECEIVE public comments, CONSIDER all objections and protests received by the
Clerk of the Board, and CLOSE the hearing.
3. DETERMINE that the County did not receive protests from owners of more than one half of the area of the
property within the proposed boundaries of the ECRAOB, and therefore a majority protest does not exist.
4. FIND that the road and bridge improvements specified in the staff report, DPR, and Nexus Study are necessary and
desirable within the ECRAOB.
5. ADOPT Ordinance No. 2013-26, attached hereto, to adjust the fees within the ECRAOB,
APPROVE OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR RECOMMENDATION OF BOARD COMMITTEE
Action of Board On: 12/17/2013 APPROVED AS RECOMMENDED OTHER
Clerks Notes:
VOTE OF SUPERVISORS
AYE:John Gioia, District I Supervisor
Candace Andersen, District II
Supervisor
Mary N. Piepho, District III
Supervisor
Karen Mitchoff, District IV
Supervisor
Federal D. Glover, District V
Supervisor
Contact: Mary Halle, (925)
313-2327
I hereby certify that this is a true and correct copy of an action taken and entered on the minutes of the Board
of Supervisors on the date shown.
ATTESTED: December 17, 2013
David Twa, County Administrator and Clerk of the Board of Supervisors
By: June McHuen, Deputy
cc:
SD. 9
To:Board of Supervisors
From:Julia R. Bueren, Public Works Director/Chief Engineer
Date:December 17, 2013
Contra
Costa
County
Subject:HEARING on Ordinance 2013-26 and Resolution 2013/472 concerning mitigation fees for the ECRAOB and the
boundaries of that area of benefit, East County
RECOMMENDATION(S): (CONT'D)
and to reestablish the boundaries of the ECRAOB.
6. ADOPT Resolution No. 2013/472, attached hereto, to adopt the DPR and Nexus Study attached thereto as
Exhibit A and Exhibit B.
7. DETERMINE that the adoption of Ordinance No. 2013-26 and Resolution No. 2013/472 are exempt from
environmental review under the California Environmental Quality Act (CEQA), pursuant to Article 5, Section
15061(b)(3) of the CEQA Guidelines.
8. DIRECT the Conservation and Development Director to file a Notice of Exemption with the County
Clerk-Recorder; and AUTHORIZE the Public Works Director to arrange for payment of a $25 fee to
Conservation and Development for processing, and a $50 fee to the County Clerk for filing the Notice of
Exemption.
9. DIRECT the Clerk of the Board of Supervisors to record certified copies of Ordinance No. 2013-26 and
Resolution No. 2013/472 with the County Clerk-Recorder.
10. DIRECT the Public Works Director and the Conservation and Development Director to review the fee
schedule on January 1, 2016, and every January 1 thereafter that the ECRAOB transportation mitigation fees
remain in effect, and adjust the fees for the effects of inflation or deflation, in accordance with Section 5(a)(3) of
Ordinance No. 2013-26.
11. ABOLISH the Marsh Creek, Pittsburg/Antioch and East County subareas of the ECRAOB.
12. REDESIGNATE the trust fund for the East County subarea (Trust Fund No. 1282) as the fund into which all
ECRAOB transportation mitigation fee revenue will be deposited, DIRECT all ECRAOB transportation
mitigation fees to be deposited into that fund, and DIRECT the County Treasurer-Tax Collector to invest all
monies in said fund, with interest to accrue and remain in the fund.
13. DIRECT the Public Works Director to transfer all assets and liabilities of the trust funds for the Marsh Creek
subarea (Trust Fund No. 1280) and Pittsburg/Antioch subarea (Trust Fund No. 1281) to Trust Fund No. 1282, and
close Trust Fund Nos. 1280 and 1281.
14. DIRECT that all funds deposited in Trust Fund No. 1282 shall be used solely to pay new development’s
proportional share of the actual or estimated costs of constructing the transportation improvements specified in the
DPR and Nexus Study, and to reimburse the County for payment of any such costs with money advanced by the
County from its general fund, or from other County revenues.
15. AUTHORIZE the Public Works Department to collect an additional administrative fee equal to two percent
(2%) of the applicable ECRAOB Fee.
16. DIRECT the Conservation and Development Director to monitor future amendments to the currently adopted
General Plan and their impact on traffic within the ECRAOB and to report those amendments to the Public Works
Director as necessary to facilitate updating of the ECRAOB Fee.
FISCAL IMPACT:
Revenues collected will be deposited to East County Regional Area of Benefit.
BACKGROUND:
A. INTRODUCTION: One of the objectives of the County General Plan is to connect new development directly to
A. INTRODUCTION: One of the objectives of the County General Plan is to connect new development directly to
the provision of community facilities necessary to serve that development. In other words, development cannot be
allowed to occur unless a mechanism is in place to provide the funding for the infrastructure necessary to serve
that development. The ECRAOB Fee is a means of raising revenue to construct road improvements to serve new
developments. Requiring that all new development pay a road improvement fee will help ensure that they
participate in the cost of improving the road system.
B. PAST AND PURPOSE OF EAST COUNTY REGIONAL AOB: On March 15, 1988, the Board of
Supervisors (“Board”) passed Resolution 88/122, forming the Countywide Area of Benefit (“Countywide AOB”),
a development fee program to raise revenue for the improvement of the capacity and safety of the arterial road
network in the County through the establishment of a traffic mitigation fee ordinance, pursuant to Government
Code section 66484. The boundaries of the Countywide AOB coincided with the County boundary, but only
unincorporated areas were included in the Countywide AOB. The Board also adopted the 1988 Development
Program Report, which showed the Countywide AOB to be divided into seven regions – West County, Central
County, Lamorinda, Alamo, South County, East County and Bethel Island – and three of those regions, West
County, Central County and East County, were divided into subareas. The 1988 study set forth a list of
improvements in each region and subarea, their estimated cost, the basis for apportionment of these costs among
different land use categories and fees applicable to development in each region. Ordinance No. 88-27, adopted the
same date, established the fees applicable to all development in the seven regions. The 1988 study provided that
fees collected in a subarea were to be kept in a separate trust fund specific to that subarea, to “ensure that the
money collected in a subarea is used to improve the road deficiencies in that subarea only and will not be diverted
for use elsewhere in the County.”
On March 9, 1993, the Board adopted the Revised 1993 Development Program Report for the Countywide AOB,
which outlined the boundaries of seven regional areas of benefit within the original Countywide AOB and
described them as coinciding with the boundaries of the seven regions created in 1988. Among the new regional
areas of benefit was the ECRAOB, which was to have the same subareas that had comprised the East County
region: The Pittsburg/Antioch, Marsh Creek and East County subareas. The 1993 report identified the same list of
projects for the ECRAOB as had been set forth for the East County region. The 1993 report also provided that
funding mechanism and trust fund accounts specific to a particular subarea and/or region would remain in place
but be “specific to a particular Regional Area of Benefit.” Simultaneously with the adoption of the 1993 report,
the Board adopted Ordinance No. 93-24, formally establishing the ECRAOB and adopting fees to fund the 10
projects identified in the 1993 report for that area. The 10 projects were estimated at that time to cost
$19,660,000, unchanged from the cost estimate provided in 1988.
Four years later, on July 22, 1997, the Board adopted an Addendum to the 1993 report and Ordinance No. 97-31,
which served to remove one of the improvement projects – the State Route 4 Bypass – from the list of projects
funded by the ECRAOB Fee revenues and accordingly lower fee rates to account for the reduction in project
costs. (A separate ordinance was adopted to collect funding for the State Route 4 Bypass as part of the East
Contra Costa Sub-Regional Transportation Mitigation Fee program adopted earlier that year.) Of the remaining
nine projects, six were completed with funding from ECRAOB Fee revenues. Within the Pittsburg/Antioch
subarea, intersection improvements at “L” Street at 18th Street were completed and the Bailey Road-Highway 4
interchange was modified. In the East County subarea, Deer Valley Road bridge improvements were completed,
as well as signalizations at Laurel and Neroly roads, Empire Avenue and Carpenter Road, and Lone Tree Way at
State Route 4.
Three other projects on the original list have not been completed. In the East County subarea, the widening of
Lone Tree Way to four lanes stopped short of full completion when the area was annexed by the City of
Brentwood. In the Marsh Creek area, portions of Marsh Creek Road between the City of Clayton and City of
Brentwood have been improved to County standards, but other segments of this long and complex project remain
to be undertaken. Finally, in the Pittsburg/Antioch subarea, the widening of Evora Road to four lanes was not
undertaken and is not included among the improvements on the updated list.
C. PROPOSED CHANGES TO FEE PROGRAM: In recent years, the development potential and traffic
circulation needs have changed within the ECRAOB. Over the past twenty years, the population of the City of
Antioch has increased by 55 percent, and growth in the City of Brentwood has boosted its population 415 percent,
earning it the status of the fastest growing city in California for several years running. In addition, approximately
nine miles of new highway were added with the construction of the State Route 4 Bypass. The resulting
alterations in traffic patterns and increased congestion prompted an update to the AOB program, resulting in an
amended project list and fee schedule and some administrative modifications, as discussed below.
1. New Project List: Under staff’s proposal, revenues received from the updated ECRAOB Fee would be used to
partially fund 23 road improvement projects. One project on the original project list -- Improvements to Marsh
Creek Road between the City of Clayton and City of Brentwood – is included in the new list of projects. New
projects include the widening of segments of Byron Highway, Sellers Avenue, Delta Road and Knightsen
Avenue, and signalization at numerous intersections, including Knightsen Avenue at Delta Road and several
intersections along Byron Highway and Sellers Avenue.
The total estimated cost of the updated list of projects is $221,071,000, of which $33,647,000 is attributable to
growth within the ECRAOB. Detailed estimates for each of the projects on the proposed project list are included
in the October 2012, Nexus Study, attached as Exhibit B to proposed Resolution No. 2013/472. The current
balance of the combined funds from the Marsh Creek, Pittsburg/Antioch and East County subareas of the
ECRAOB totals $5,310,000.
Other sources of revenue to fund the remainder of the total cost of the improvements include State or Federal
Highway Safety Improvement grant funds, Local Measure J funds, gas tax revenue, and various other grant
programs that may become available in the future.
2. Use of Existing Fee Revenues: There is currently an approximate balance of $5,310,000 in the three accounts
for the three subareas of the ECRAOB. Of that amount, $43,400 is in the Marsh Creek subarea account, $1,480 is
in the Pittsburg/Antioch subarea account and the remaining $5,265,040 is on deposit in the East County subarea
account. Some of these amounts represent fee revenues that were not spent because projects were not constructed
or were paid for with other funding, such as state and federal grants. Other amounts remain on deposit because
work remains to be funded on the Marsh Creek Road Improvement projects.
There are limitations on how development impact fee revenues may be spent. By law, the existing revenues could
not be spent on any of the 22 new improvement projects on the updated project list. When the Board established
subareas and limited where fee revenues collected within subareas could be spent, the Board imposed additional
restrictions on how the revenues from the ECRAOB Fee could be spent. Because of these restrictions, none of the
funds remaining in the East County and Pittsburg/Antioch subarea accounts – which account for $5,265,040 of the
$5,310,000 now on deposit in the three subarea accounts combined – could be spent on the Marsh Creek Road
Improvements project or on any new projects.
Staff proposes instead that the allocation of all subarea balances to the Marsh Creek Road Improvements is
justified due to the regional nature of Marsh Creek Road. Although it is located within the Marsh Creek subarea,
the Marsh Creek Road Improvements project provides a regional benefit with a connection to the west. Marsh
Creek Road currently experiences a large number of commute trips that would otherwise be restricted to State
Route 4 to connect to the west. The original Marsh Creek Road Improvements project was listed in the 1993 East
County Regional AOB update with a project cost of $3 million. The purpose of this project then is the same as its
purpose now: To improve safety and bring segments of the road up to County standards. Although some segments
have been improved, many remain to be completed. These segments are estimated to cost $56.8 million,
approximately $10 million of which would be funded with ECRAOB Fee revenues. Although the intended
improvements remain the same, the anticipated costs have increased substantially. Among other reasons, more
detailed engineering studies have better defined the project scope, construction and real property acquisition costs
have increased, and additional fees and mitigation are required to comply with environmental requirements.
Within the next two years, three projects are slated for construction on Marsh Creek Road at an estimated cost of
$6.8 million. Safety improvements on Marsh Creek Road have become a high priority due to the recent accident
history.
Additionally, staff believes that the allocation of fee revenues collected from developments in the East County and
Pittsburg/Antioch subareas to the Marsh Creek Road Improvement projects is appropriate in light of how the fees
charged to developers in all three subareas were calculated. Fee rates applicable to development in all three
subareas were calculated based on the cost of the improvement projects in all of the subareas and the projected
peak hour trips to be generated by development in those areas. The fees paid by development in all three subareas
included a certain amount for the Marsh Creek Road Improvements project. For these reasons, staff has concluded
that fee revenues collected in the East County and Pittsburg Antioch subareas should be used to pay for
improvements to Marsh Creek Road.
3. Revised Fee Schedule: Based on the analysis in the Nexus Study, maximum fee rates that could be charged
were calculated and are shown in Table 1 attached hereto. As can be seen, the maximum rates represent a
significant increase from the rates in the current fee schedule. In order to update the fee to more effectively fund
infrastructure improvements while still encouraging growth and job creation for the area in the current economic
conditions, staff recommends adjusting rates to the potential maximum fee rates but not above the average traffic
fees for the Bay Area. Based upon research of the traffic mitigation fee rates for the surrounding jurisdictions,
Table 1 provides a list of the proposed fee rates.
Imposing fees for new commercial/retail, office, and industrial developments that are lower than the fee
determined by the Nexus Study to be necessary to fund the transportation improvements, and the phased
implementation of the fees for new residential uses, will result in a shortfall of funding for new development’s
share of those improvements. The County will rely on sources other than development fee revenue to satisfy that
shortfall and fully fund the costs of the transportation improvements, including gas tax, Measure J funds, and
grant funding.
4. Elimination of subareas/merging of subarea accounts: When the Countywide AOB was created in 1988,
subareas of what is now the ECRAOB were created because the areas were somewhat distinct. Traffic generally
moved from the subareas toward arterials leading to State Route 4, which motorists would use to commute to
Concord and further west for shopping and employment. The disconnection of the subareas from each other
meant that, for developments in a subarea to receive any benefits from the fees that were paid as a condition of
approval, the fee revenues needed to be spent on road projects in the subarea. Since then, the East County area has
become increasingly urbanized, and the subareas have become more connected. As a result, road improvements in
the area tend to serve all of the subareas. For example, the widening of Balfour Road is serving residents of
developments in Discovery Bay, who use the route to travel to shopping areas in Brentwood and Antioch, while
Brentwood residents are utilizing Marsh Creek Road to commute to Concord, as State Route 4 has become
increasingly congested.
For these reasons, staff has determined that there is no longer a need for subareas within the ECRAOB, and
recommend they be abolished and the subarea trust funds merged into a single trust fund. In the absence of
subareas and the separate subarea trust funds, fee revenues collected from developments within the ECRAOB
would be deposited into a single trust fund, and those funds would be available to fund projects throughout the
AOB, subject to nexus requirements in the Mitigation Fee Act (Gov. Code, § 66600 et seq.) The deposit of fee
revenues that will be used to construct multiple major thoroughfare projects to serve an area of benefit is
authorized by Government Code section 66484, subd. (e).
D. RESOLUTION NO. 2013/472: Pursuant to Government Code section 66484 subdivision (a)(3), a resolution
must be adopted by the Board that incorporates a description of the boundaries of the area of benefit, the costs,
whether actual or estimated, and the method of fee apportionment established at the hearing.
The Nexus Study, attached as Exhibit B to Resolution 2013/472, sets forth the boundaries of the AOB, the list of
projects, their estimated costs, method of fee apportionment, and nexus findings. The DPR, attached as Exhibit A
to the resolution, describes the recommended fee rates to be implemented. Approval of Resolution No. 2013/472,
attached hereto, is recommended because it serves to comply with the above legal requirements by adopting and
incorporating the facts and findings contained in the DPR and Nexus Study.
E. ORDINANCE NO. 2013-26:
To adjust the ECRAOB fees to generate revenue to fund the transportation improvements described herein, the
Board of Supervisors needs to adopt an ordinance that includes the “nexus” findings required by Government
Code section 66001. The ordinance also must include the specific information required by Government Code
section 66484. Proposed Ordinance No. 2013-26 includes the information and findings required by those statutes.
Adoption of proposed Ordinance No. 2013-26, attached hereto, will repeal Ordinance No. 97-31, and impose new
transportation mitigation fees on new development within the East County Regional AOB. The proposed
ordinance includes provisions for fee waivers for affordable and inclusionary housing units similar to those that
are included in Ordinance No. 97-31. Revenue from the fees will fund the transportation projects necessary to
serve transportation demands within the ECRAOB through 2030. Staff recommends that the Board adopt
proposed Ordinance No. 2013-26.
F. ADMINISTRATIVE FEE: In addition to the fees listed above, the County will assess an administrative fee
equal to 2% of the program revenue. This additional fee will be used to cover staff time for fee collection,
accounting, technical support to the community groups, traffic advisory committees and other administrative tasks.
G. CEQA FINDINGS: The activity is covered by the general rule that CEQA applies only to projects that have
the potential to cause a significant effect on the environment. It can be seen with certainty that there is no
possibility that the activity in question may have a significant effect on the environment, because the
implementation and imposition of fees has no associated environmental impacts; therefore, this activity is not
subject to CEQA per Section 15061(b)(3) of the CEQA Guidelines. The future implementation of the projects to
be funded with these fees, however, may have associated project-specific impacts, and such impacts will be
addressed individually under CEQA as each project is planned and implemented.
CONSEQUENCE OF NEGATIVE ACTION:
Failure to adopt Ordinance No. 2013-26 to adjust fees in the East County Regional Area of Benefit and reestablish
the boundaries of the area of benefit will delay the funding of the transportation improvements. It also will result
in new development not paying its full proportional share of those improvements, which are required to mitigate
transportation impacts caused, in part, by new development within the area of benefit.
CHILDREN'S IMPACT STATEMENT:
Not applicable.
CLERK'S ADDENDUM
CLOSED the Hearing; DETERMINED that there is no majority protest; FOUND that the road and bridge
improvements specified in the staff report, DPR, and Nexus Study are necessary and desirable within the
ECRAOB; ADOPTED Ordinance No. 2013-26 to adjust the fees within the ECRAOB, and to reestablish the
boundaries of the ECRAOB; ADOPTED Resolution No. 2013/472to adopt the DPR and Nexus Study;
DETERMINED that the adoption of Ordinance No. 2013-26 and Resolution No. 2013/472 are exempt from
environmental review under the California Environmental Quality Act (CEQA), pursuant to Article 5, Section
15061(b)(3) of the CEQA Guidelines; DIRECTED the Conservation and Development Director to file a Notice
of Exemption with the County Clerk-Recorder; and AUTHORIZED the Public Works Director to arrange for
payment of a $25 fee to Conservation and Development for processing, and a $50 fee to the County Clerk for
filing the Notice of Exemption; DIRECTED the Clerk of the Board of Supervisors to record certified copies of
Ordinance No. 2013-26 and Resolution No. 2013/472 with the County Clerk-Recorder; DIRECTED the Public
Works Director and the Conservation and Development Director to review the fee schedule on January 1,
2016, and every January 1 thereafter that the ECRAOB transportation mitigation fees remain in effect, and
adjust the fees for the effects of inflation or deflation, in accordance with Section 5(a)(3) of Ordinance No.
2013-26; ABOLISHED the Marsh Creek, Pittsburg/Antioch and East County subareas of the ECRAOB;
REDESIGNATED the trust fund for the East County subarea (Trust Fund No. 1282) as the fund into which
all ECRAOB transportation mitigation fee revenue will be deposited; DIRECTED all ECRAOB transportation
mitigation fees to be deposited into that fund, and DIRECTED the County Treasurer-Tax Collector to invest all
monies in said fund, with interest to accrue and remain in the fund; DIRECTED the Public Works Director to
transfer all assets and liabilities of the trust funds for the Marsh Creek subarea (Trust Fund No. 1280) and
Pittsburg/Antioch subarea (Trust Fund No. 1281) to Trust Fund No. 1282, and close Trust Fund Nos. 1280
and 1281. DIRECTED that all funds deposited in Trust Fund No. 1282 shall be used solely to pay new
development’s proportional share of the actual or estimated costs of constructing the transportation
development’s proportional share of the actual or estimated costs of constructing the transportation
improvements specified in the DPR and Nexus Study, and to reimburse the County for payment of any such
costs with money advanced by the County from its general fund, or from other County revenues.
AUTHORIZED the Public Works Department to collect an additional administrative fee equal to two percent
(2%) of the applicable ECRAOB Fee; and DIRECTED the Conservation and Development Director to monitor
future amendments to the currently adopted General Plan and their impact on traffic within the ECRAOB and
to report those amendments to the Public Works Director as necessary to facilitate updating of the ECRAOB
Fee.
ATTACHMENTS
Resolution No. 2013/472
Table 1
Ordinance 2013-26
Development Program Report
ECRAOB Transportation Mitigation Fee Update Report
Notice of Exemption
ECRAOB CEQA
G:\engsvc\ENVIRO\TransEng\East County Regional Area of Benefit Update\CEQA\(2013)-NOE.doc Form Updated: Nov. 2013
CALIFORNIA ENVIRONMENTAL QUALITY ACT
Notice of Exemption
To: Office of Planning and Research From: Contra Costa County
P.O. Box 3044, Room 113 Dept. of Conservation & Development
Sacramento, CA 95812-3044 30 Muir Road
Martinez, CA 94553
County Clerk
County of: Contra Costa
Project Title: East County Regional Area of Benefit Update, 0676-6P4011 / CP#09-70
Project Applicant: Contra Costa County Public Works Department
Project Location – Specific: eastern Contra Costa County
Project Location: eastern Contra Costa County Project Location – County: Contra Costa
Description of Nature, Purpose and Beneficiaries of Project: The East County Regional Area of Benefit (ECAOB) is a fee mechanism,
allocating money collected from developers to fund road improvement projects that mitigate traffic impacts generated by new residential,
commercial, and industrial developments.
The purpose of the ECAOB Update is to make adjustments to the current Area of Benefit project list and fee schedule to meet changing traffic
mitigation demands and needs within the ECAOB Bound ary area. The update is needed to ensure that the amount of fees charged
accurately reflects the effects of annual inflation and meets the current traffic mitigation needs of the East County Region. Real property
transactions, including right of way acquisition, may be necessary in support of this project. Each roadway project to be covered by the
ECAOB will be addressed by individual project specific CEQA documents.
Name of Public Agency Approving Project: Contra Costa County
Name of Person or Agency Carrying Out Project: Contra Costa County Public Works Department
Exempt Status:
Ministerial Project (Sec. 21080(b) (1); 15268; Categorical Exemption:
Declared Emergency (Sec. 21080(b)(3); 15269(a)); Other Statutory Exemption, Code No.:
Emergency Project (Sec. 21080(b)(4); 15269(b)(c)); General Rule of Applicability [Article 5, Section 15061 (b)(3)]
Reasons why project is exempt: This activity is not subject to the California Environmental Quality Act (CEQA) pursuant to Article 5, Section
15061 (b)(3) of the CEQA Guidelines. It can be seen with certainty that there is no possibility that the activity may have a significant adverse
effect on the environment.
Lead Agency Contact Person: Kimani Birden - Public Works Dept. Area Code/Telephone/Extension: (925) 313-2190
If filed by applicant:
1. Attach certified document of exemption finding.
2. Has a Notice of Exemption been filed by the public agency approving the project? Yes No
Signature: Date: Title: _________________________
Signed by Lead Agency Signed by Applicant
AFFIDAVIT OF FILING AND POSTING
I declare that on I received and posted this notice as required by California
Public Resources Code Section 21152(c). Said notice will remain posted for 30 days from the filing date.
Signature Title
Applicant: Department of Fish and Game Fees Due
Public Works Department EIR - $2,995.25 Total Due: $ 75.00
255 Glacier Drive Neg. Dec. - $2,156.25 Total Paid $
Martinez, CA 94553 DeMinimis Findings - $0
Attn: Kimani Birden County Clerk - $50 Receipt #:
Environmental Services Division Conservation & Development - $25
Phone: (925) 313-2190
Julia R. Bueren, Director
Deputy Directors
R. Mitch Avalon
Brian M. Balbas
Stephen Kowalewski
Stephen Silveira
"Accredited by the American Public Works Association"
255 Glacier Drive Martinez, CA 94553-4825
TEL: (925) 313-2000 FAX: (925) 313-2333
www.cccpublicworks.org
ADOPTED BY BOARD OF SUPERVISORS
ON ___________________
Development Program Report
for the
East County Regional
Area of Benefit
November, 2013
Prepared Pursuant to Section 913 of the County Ordinance Code
Prepared by and for:
Contra Costa County Public Works Department, Transportation Engineering Division and
Department of Conservation and Development, Community Development Division
Development Program Report
for the East County Regional
Area of Benefit
Table of Contents
CHAPTER 1: INTRODUCTION AND PURPOSE ............................................................... 1
CHAPTER 2: BACKGROUND ........................................................................................... 2
CHAPTER 3: LOCATION AND BOUNDARY .................................................................... 3
CHAPTER 4: GENERAL PLAN RELATIONSHIP ............................................................... 3
CHAPTER 5: PROJECT LIST ........................................................................................... 4
CHAPTER 6: DEVELOPMENT POTENTIAL ..................................................................... 5
CHAPTER 7: ESTIMATED COST OF ROAD IMPROVEMENTS .......................................... 6
CHAPTER 8: METHOD OF COST APPORTIONMENT ....................................................... 7
CHAPTER 9: FEE RATES ................................................................................................. 8
CALCULATION OF FEES ............................................................................................................. 8
RECOMMENDED FEES ............................................................................................................... 9
CHAPTER 10: PROGRAM FINANCE CONSIDERATIONS............................................... 10
OTHER FUNDING SOURCES ...................................................................................................... 10
REVIEW OF FEES .................................................................................................................. 10
COLLECTION OF FEES ............................................................................................................. 10
INTEREST ON FEES ................................................................................................................ 11
DEDICATION IN LIEU OF FEE .................................................................................................... 11
Development Program Report
for the East County Regional
Area of Benefit
List of Tables
TABLE 1. DEVELOPMENT POTENTIAL SUMMARY……………………………………………….5
TABLE 2. FEE CALCULATIONS……………………….……………………………………………….8
TABLE 3. FEE SCHEDULE………………………………………………………………………..…….9
List of Exhibits
EXHIBIT A. AREA OF BENEFIT BOUNDARY LEGAL DESCRIPTION
EXHIBIT B. AREA OF BENEFIT BOUNDARY PLAT MAP
EXHIBIT C. ROAD IMPROVEMENT PLAN PROJECT LIST
EXHIBIT D. EAST COUNTY REGIONAL AREA OF BENEFIT TRANSPORTATION
MITIGATION FEE UPDATE STUDY
Development Program Report
for the East County Regional
Area of Benefit
1 OF 11
Chapter Introduction and Purpose 1
The East County Regional Area of Benefit (“East County Regional AOB”) was created as a means
to collect funds to maintain and improve the capacity and safety of the arterial road network in
the east county area of Contra Costa County (“County”). This Development Program Report
(“DPR”) contains information and data in support of an increase in the fees imposed on
development projects within the East County Regional AOB to fund the construction of bridge
and major thoroughfare improvements. The DPR is required by Chapter 913-6 of the County
Ordinance Code and is required by the Board of Supervisors’ Policy on Bridge Crossing and Major
Thoroughfare Fees (adopted July 17, 1979), which implements Division 913 of the C ounty
Ordinance Code.
One of the objectives of the County General Plan is to connect new development directly to the
provision of community facilities necessary to serve that development. In other words,
development cannot be allowed to occur unless a mechanism is in place to provide the funding
for the infrastructure necessary to serve that development. The East County Regional AOB Fee
is a means of raising revenue to construct road improvements to serve new developments.
Requiring that all new development pay a road improvement fee will help ensure that they
participate in the cost of improving the road system.
Each new development or expansion of an existing development will generate new additional
traffic. Where the existing road system is inadequate to meet future needs based on new
development, improvements are required to meet the new demand. The purpose of a
development program is to determine improvements ultimately required by future development
and to require developers to pay a fee to fund these improvements. Because the East County
Regional AOB Fee is based on the relative impact on the road system and the costs of the
necessary improvements to mitigate this impact, the fee amount is roughly proportional to the
development impact. This report discusses the basis of that fee amount.
Development Program Report
for the East County Regional
Area of Benefit
2 OF 11
Chapter Background 2
On March 15, 1988, the Board of Supervisors (“Board”) passed a resolution forming the
Countywide Area of Benefit (“Countywide AOB”) to improve the capacity and safety of the
arterial road network in the County through the establishment of a traffic mitigat ion fee
ordinance (Resolution 88/122 and Ordinance 88-27). This ordinance applied to unincorporated
areas of the County.
On March 9, 1993, the Board adopted the “Revised DPR for the Countywide Area of Benefit,”
which outlined boundaries of seven regional areas of benefit within the original Countywide AOB.
One of the proposed regional areas of benefit was the East County Regional AOB. On the same
date, the Board adopted Ordinance No. 93-24 to establish the East County Regional AOB and
adopt fees for that area to fund 10 specific improvement projects.
On July 22, 1997, the Board adopted Ordinance No. 97-31 to delete one of the improvement
projects from the list – the State Route 4 Bypass – and lower the fees for the East County
Regional AOB. The Board adopted a separate fee ordinance to collect money to help fund the
State Route 4 Bypass.
Over the past several years, East County Regional AOB fees have helped pay for improvements
to complete many of the projects on the project list, including improvements to “L” Street at 18th
Street, Lone Tree Way, Deer Valley Road, Laurel Road at Neroly Road, Empire Avenue at
Carpenter Road, and Lone Tree Way at State Route 4.
The Marsh Creek Road Improvement project, also funded in part with East County Regional AOB
fees, is very long and complex and therefore must be approached in segments. Although some
segments of Marsh Creek Road have been improved, there are several segments that still require
improvements. This project will remain on the project list.
In recent years, the area within the East County Regional AOB has experienced changes in the
area’s traffic circulation needs and development potential. Th is change has prompted an update
to the AOB program, resulting in an amended project list and fee schedule.
Development Program Report
for the East County Regional
Area of Benefit
3 OF 11
Chapter Location and Boundary 3
The East County Regional AOB boundary location is described in Exhibit A and generally shown
in Exhibit B.
Chapter General Plan Relationship 4
The East County Regional AOB is consistent with the features of the County General Plan and its
amendments, and subscribes to the policies of the General Plan elements. The General Plan
policies include, but are not limited to, improving the County roadway network to meet existing
and future traffic demands. Establishing and charging new development the East County
Regional AOB Fee will assist in funding the necessary improvements required for future growth
that are generally shown in the General Plan.
The General Plan and its various elements are available for review at the Department of
Conservation and Development, Community Development Division, 30 Muir Road, Martinez,
during office hours.
Development Program Report
for the East County Regional
Area of Benefit
4 OF 11
Chapter Project List 5
The project List for the East County Regional AOB is set forth in Exhibit C. This list contains a
total of 23 projects, including arterial roadway improvements, intersection geometric
improvements, and signalization projects. The improvements proposed were identified through
a cooperative effort by the Public Works Department and the Department of Conservation and
Development, utilizing the combined knowledge of both agencies. Additionally, the following
documents were used for reference in the development of the project list:
The Certified Environmental Impact Report for the East Cypress Corridor Specific Plan
Environmental Impact Report for Discovery Bay West
Contra Costa County General Plan
The improvements included on the East County Regional AOB project list have be en identified
through previous planning studies or environmental impact analyses conducted in the area. For
instance, many of the improvements on the project list were identified in the East Cypress
Corridor Specific Plan as roadways that will be impacted by cumulative development throughout
the East County Region.
The improvements proposed for the East County Regional AOB will be reviewed periodically to
assess the impacts of changing travel patterns, the rate of development, and the accuracy of the
estimated project costs. The periodic review of the program will also allow staff to evaluate
project priority and the need to increase fees , should project costs increase or exceed the rate of
inflation.
Development Program Report
for the East County Regional
Area of Benefit
5 OF 11
Chapter Development Potential 6
The “East County Regional Area of Benefit Transportation Mitigation Fee Update” study (“Nexus
Study”), dated October, 2012, was prepared by Fehr & Peers for the Public Works Department
and is attached as Exhibit D and incorporated herein by reference. The Nexus Study provides
the technical basis for establishing the required nexus between the anticipated future
development in East County and the need for certain regional facilities.
The projected growth in households, employment, and peak hour trips within the East County
Regional AOB is discussed and shown in the Nexus Study.
A summary of the potential new residential dwelling units, office, industrial, and commercial /
retail developments (net growth from 2005 to 2030) is shown in Table 1.
Table 1. Development Potential Summary
Land Use Category Units
Single-Family Residential 2,405 dwelling units
Multi-Family Residential 935 dwelling units
Office 17,000 sq ft
Industrial 79,000 sq ft
Commercial/Retail 74,000 sq ft
Development Program Report
for the East County Regional
Area of Benefit
6 OF 11
Chapter Estimated Cost of Road Improvements 7
The estimated costs of the road improvements planned for the East County Regional AOB and
the corresponding recommended East County Regional AOB Fee contributions are shown in
Exhibit C. The East County Regional AOB will only finance the proportional share of the
improvements necessitated by the impact on the road system from new development.
Detailed cost estimates for the projects included in the road improvement plan are provided in
the Technical Appendix to the Nexus Study.
The County will assess an administrative fee equal to 2% of the applicable fee. This additional
fee will be used to cover staff time for fee collection, accounting, and technical support to the
community groups and traffic advisory committees.
Development Program Report
for the East County Regional
Area of Benefit
7 OF 11
Chapter Method of Fee Apportionment 8
The total estimated cost of the projects included in the East County Regional AOB project list is
$221,071,000. Of this, approximately $33,647,000 is attributable to growth within the East
County Regional AOB. There is an existing account balance of $5,310,000.
An adjusted project cost to be covered by the East County Regional AOB fees was determined by
subtracting the existing fund balance from the attributable project cost.
$33,647,000 – $5,310,000 = $28,337,000
(Attributable Project Cost) (Balance) (Adjusted Project Cost)
This adjusted project cost represents the amount of revenue needed from the East County
Regional AOB Fee to fund the construction of the projects shown in Exhibit C.
The expected growth in the East County Regional AOB to the year 2030 is 3,340 dwelling units
and 407 new jobs. Based on the analysis presented in the Nexus Study, this equates to 3,330
projected peak hour trips. To determine a fee rate per peak hour trip, the adjusted project cost
was divided by the projected 3,330 peak hour trips to determine a maximum fee that could be
charged per peak hour trip:
$28,337,000 = $8,509 per peak hour trip
3,330
The peak hour trips projected to be generated by each type of development are used to
apportion fees among the various development types. This method of apportionment is used so
that developments are charged fees in proportion to the number of trips they are projected to
generate. In this way, the fees attributed to each new parcel will be proportional to the
estimated benefits they receive through use of the new improvements.
Development Program Report
for the East County Regional
Area of Benefit
8 OF 11
Chapter Fee Rates 9
Calculation of Fees
The fee calculation is set forth in detail in the Nexus Study.
To determine a maximum fee rate for the various land use categories, the fee rate per peak hour
trip calculated in Chapter 8 is multiplied by a peak hour trip generation factor for each land use
category designation, as shown in Table 2. In the residential categories, this results in a fee per
dwelling unit. In the non-residential categories, the fee is charged per square foot. These
calculations are summarized in Table 2.
Table 2. Fee Calculations
Land Use
Category
Peak Hour Trip
Generation
Factor
Trips
Single-Family 2,405 DU 1.01 2,429 8,594$ / DU
Multi-Family 935 DU 0.58 542 4,935$ / DU
Office 17 KSF 1.49 25 12.68$ / SF
Industrial 79 KSF 0.73 58 6.21$ / SF
Commercial 74 KSF 3.73 276 31.74$ / SF
Other 1.00 8,509$ / PHT
TOTAL ---3,330---
Units Maximum Fee
Rate*
* Maximum Fee Rate = Fee Rate per Peak Hour Trip * Peak Hour Trip Generation Factor
A development in the “Other” category would be charged fees based upon the peak hour trips to
be generated by that development, as determined by traffic studies for the specific land use, if
required by the County, or in accordance with the latest edition of the Institute of Transportation
Engineers (ITE) Trip Generation Manual.
Development Program Report
for the East County Regional
Area of Benefit
9 OF 11
Recommended Fees
The potential maximum fee rates calculated in the Nexus Study represents a 300% to 500%
increase from the current fee schedule. In order to update the fee rates to more effectively fund
infrastructure improvements while still encouraging jobs and growth for the area during the
struggling economy, it is recommended that current fee rates be increased but not beyond the
average traffic fee rates for the Bay Area. Based upon a survey of surrounding jurisdictions, the
following recommended fee schedule will bring the ECRAOB fee rates up to the average rates for
the area as shown in Table 3. The potential maximum fee rates for residential land uses are not
above the Bay Area averages; thus, the recommended fee is consistent with the maximum fee
calculated per the Nexus Study and is proposed to be phased in over a two-year period. The
recommended fee rates for non-residential land use categories represent approximately a 100%
fee increase, which is much less than the 300-500% increase reflected in the Nexus Study.
Table 3. Fee Schedule
Land Use Category Fee Rate
Single-Family $5,530 per dwelling unit through December 31, 2014
$8,594 per dwelling unit on and after January 1, 2015
Multi-Family $3,436 per dwelling unit through December 31, 2014
$4,935 per dwelling unit on and after January 1, 2015
Office $6.00 per square foot
Industrial $3.00 per square foot
Commercial/Retail $8.67 per square foot
Other $5,549 per peak hour trip through December 31, 2014
$8,509 per peak hour trip on and after January 1,2015
Development Program Report
for the East County Regional
Area of Benefit
10 OF 11
Chapter Program Finance Considerations 10
Other Funding Sources
The improvements planned for the East County Regional AOB will be only partially funded by
East County Regional AOB fee revenues. Other sources of funding, such as State or Federal aid,
or local sources such as sales tax, gas tax, etc., will be pursued.
These other funding sources include, but are not limited to, Regional Measure J Funds, State
Transportation Improvement Program (STIP) Funds, and Federal Program Funds.
The rate at which revenue is generated by the East County Regional AOB Fee depends on the
rate of new development. This rate of revenue generation affects the timing of construction of
the improvement projects because it is dependent upon the total amount of fees collected , less
expenditures. Alternate sources of funding would permit construction of AOB projects sooner.
Review of Fees
Project cost estimates will be reviewed periodically while the East County Regional AOB is in
effect. On January 1 of each year thereafter, the amount of the fees will be increased or
decreased based on the percentage change in the Engineering News Record Construction Cost
Index for the San Francisco Bay Area for the 12-month period ending with the September index
of the previous calendar year, without further action of the Board of Supervisors.
Collection of Fees
Fees will be collected when a building permit is issued, in accordance with Section 913-4.204 of
Title 9 (Subdivisions) of the Contra Costa County Ordinance Code. Fees collected will be
deposited into an interest-bearing trust fund established pursuant to Section 913 -8.002 of the
Contra Costa County Ordinance Code.
Development Program Report
for the East County Regional
Area of Benefit
11 OF 11
Interest on Fees
The interest accrued on the fees collected shall continue to accumulate in the trust account and
shall be expended for construction of the improvements, or to reimburse the County for the cost
of constructing the improvements, pursuant to Section 913-8.006 of the County Ordinance Code.
Dedication in Lieu of Fee
A development may be required to construct, or dedicate right-of-way for a portion of the
improvements as a condition of approval. In such an event, the developer may be eligible to
receive credit for the fee or reimbursement. The eligible credit and/or reimbursement shall be
determined in accordance with the County’s “Traffic Fee Credit and Reimbursement Policy.”
MH:sr
G:\transeng\AOB\East County Regional AOB\update 2013\DPR.ECRAOB.2012.docx
Development Program Report
for the East County Regional
Area of Benefit
Exhibit Area of Benefit Boundary Legal Description A
Development Program Report
for the East County Regional
Area of Benefit
Development Program Report
for the East County Regional
Area of Benefit
Exhibit
B
Area of Benefit Boundary Plat Map
Development Program Report
for the East County Regional
Area of Benefit
Exhibit Road Improvement Plan – Project List C
Table 10
ID Project Total Cost
Estimate
Adjustment for
Existing
Deficiencies
East County
Regional AOB
Share2
Potential AOB Fee
Contribution
1 Vasco Road / Camino Diablo
Intersection Improvements $3,837,000 100% 11% $422,000
2
Marsh Creek Road Improvements
(City of Clayton to City of
Brentwood)
$56,819,000 37% 18% $3,784,000
3 Chestnut Street Widening $11,836,000 37% 78% $3,416,000 (Sellers Ave to Byron Hwy.)
4 Delta Road Widening $10,079,000 37% 100% $3,729,000 (Byron Hwy. to Holland Tract Road)
5
Knightsen Ave/Eden Plains Rd
Widening $11,650,000 37% 66% $2,825,000
(Delta Road to Chestnut Street)
6 Sunset Road Widening $12,150,000 37% 81% $3,641,000 (Sellers Ave to Byron Hwy.)
7
Byron Hwy. Widening
$27,943,000 37% 9% $931,000 (Camino Diablo to the Alameda
County line)
8 Byron Highway Two Way Left Turn
Lane at Byron Elementary School $1,296,000 100% 20% $259,000
9 SR4/Byron Highway South
Intersection Widening (Phase 2) $2,325,000 100% 15% $349,000
10
Knightsen Ave Widening
$6,037,000 37% 28% $625,000 (East Cypress Road to Delta Road)
11 Delta Road Widening $9,044,000 37% 30% $1,004,000 (Sellers Ave to Byron Hwy.)
12 Sellers Ave Widening $8,890,000 37% 24% $789,000 (Delta Road to Chestnut Street)
13 Sellers Ave Widening $5,390,000 37% 60% $1,197,000 (Main Canal to Marsh Creek)
14a3 Byron Highway Widening $11,561,000 37% 56% $2,395,000 (Delta Road to Chestnut Street)
14b3 Byron Highway Widening $11,217,000 37% 62% $2,573,000 (Chestnut Street to SR 4)
Development Program Report
for the East County Regional
Area of Benefit
ID Project Total Cost
Estimate
Adjustment for
Existing
Deficiencies
East County
Regional AOB
Share2
Potential AOB Fee
Contribution
14c3 Byron Highway Widening $8,220,000 37% 20% $608,000 (SR 4 to Camino Diablo)
15 Camino Diablo Widening $10,431,000 37% 11% $425,000 (Vasco Road to Byron Hwy.)
16 Knightsen Ave / Delta Road
Intersection Improvements $1,594,000 100% 37% $590,000
17 Byron Highway / Camino Diablo
Intersection Improvements $3,499,000 100% 14% $490,000
18 Byron Highway / Point of Timber
Intersection Improvements $2,271,000 100% 62% $1,408,000
19 Sellers Ave / Marsh Creek Road
Intersection Improvements $657,000 100% 24% $158,000
20 Balfour Road / Byron Highway
Intersection Improvements $1,019,000 100% 77% $785,000
21 Sellers Ave / Sunset Road
Intersection Improvements $1,146,000 100% 34% $390,000
22 Sellers Ave / Chestnut Street
Intersection Improvements $1,180,000 100% 35% $413,000
23 Sellers Ave / Balfour Road
Intersection Improvements $980,000 100% 43% $421,000
TOTAL $221,071,000 $33,647,000
Existing Fee Account Balance $5,310,000
Total Cost Minus Existing Funds $28,337,000
Projected Growth in Trips 3,330
Fee per Trip $8,509
Notes:
Determination of existing deficiencies is described under Step 2 above. Intersection improvement projects are not subject to existing
deficiencies, so are assigned a 100% factor. Projects to upgrade roadways to County standards are subject to existing deficie ncies, so are
assigned a 43% factor. The calculation of these factors is described under Step 4a above.
Includes adjustments described under Step 4b above. See Appendix for traffic proportions for other areas.
These projects were split into segments based on varying traffic characteristics along these corridors.
Source: Fehr & Peers, 2011.
Development Program Report
for the East County Regional
Area of Benefit
Exhibit East County Regional Area of Benefit
Transportation Mitigation Fee Update Study D
Exhibit D
Attached as separate document
Table 1: Existing and Proposed Fee Schedule
Note: du = dwelling unit; sf = square foot; pht = peak hour trip
Land Use
Category
Existing Fee
Rate
Maximum Fee
Rate
Proposed Fee
Rate
Single-Family $2,588 / du $8,594 / du
$5,530/du through 12/31/14
and
$8,594 / du beginning 1/1/15
Multi-Family $2,031 / du $4,935 / du
$3,436 / du through 12/31/14
and
$4,935 du beginning 1/1/15
Commercial $6.18 / sf $31.74 / sf $8.67 / sf
Office $4.05 / sf $12.68 / sf $6.00 / sf
Industrial $1.82 / sf $6.21 / sf $3.00 / sf
Other $2,588 $8,509 / pht
$5,549 / pht through 12/31/14
and
$8,509/ pht beginning 1/1/15
East County Regional Area of Benefi t
Transportation Mitigation Fee Update
Prepared for:
Contra Costa County
October 2012
WC05-2185B
TABLE OF CONTENTS
EXECUTIVE SUMMARY ........................................................................................................................................... 1
1. INTRODUCTION ................................................................................................................................................. 1
Background .......................................................................................................................................................... 1
Purpose ............................................................................................................................................................... 1
Nexus Requirements ........................................................................................................................................... 2
Study Area ........................................................................................................................................................... 2
Organization of the Report .................................................................................................................................. 2
2. FEE PROGRAM BACKGROUND ...................................................................................................................... 4
Current Fee Program ........................................................................................................................................... 4
Proposed Fee Program ....................................................................................................................................... 5
3. ANALYSIS METHODOLOGY & RESULTS ....................................................................................................... 7
4. NEXUS FINDINGS ............................................................................................................................................ 24
TECHNICAL APPENDIX
LIST OF TABLES
Table ES-1 Calculated Fees .................................................................................................................................... 1
Table 1 Current East County Regional AOB Traffic Mitigation Fees ................................................................. 4
Table 2 Fee Update Project List ........................................................................................................................ 7
Table 3 Existing Level of Service at Study Intersections ................................................................................. 12
Table 4 Existing Roadway Segment Levels of Service on Routes of Regional Significance .......................... 13
Table 5 Existing Widths of Roads to Be Upgraded to County Standards........................................................ 14
Table 6 East County Regional AOB Housing and Employment Projections ................................................... 16
Table 7 East County Regional AOB Development Projections ....................................................................... 17
Table 8 PM Peak Hour Trip Factors ................................................................................................................ 18
Table 9 Growth In Trips ................................................................................................................................... 18
Table 10 Potential Fee Contributions................................................................................................................. 21
Table 11 Fee Calculations ................................................................................................................................. 23
LIST OF FIGURES
Figure 1 East County Regional Area of Benefit Boundary ................................................................................... 3
Figure 2 East County Regional Area of Benefit Projects ..................................................................................... 6
E-1
East County Regional AOB Transportation Mitigation Fee Update
October 2012
EXECUTIVE SUMMARY
This study is a comprehensive update of the East County Regional Area of Benefit (AOB) fee program.
The focus of the updated program is to support an overall transportation system in the East County
Regional AOB that serves the expected future demand based on changes in regional and local land use
projections, planned and approved development projects, associated changes to capital improvements
and updated cost estimates.
This report documents the analytical approach for determining the nexus between the fees and the local
impact created by anticipated development in the East County Regional AOB. A traffic and fair-share
cost analysis has been conducted to equitably distribute the costs of the necessary improvements to
developments that cause the impacts, per the provisions of the Mitigation Fee Act. The most up-to-date
versions of the available analytical tools and techniques have been used to ensure the highest level of
consistency with current standards.
The Contra Costa County Public Works Department has defined a set of transportation projects that
would improve the transportation system to accommodate projected growth and maintain the County’s
infrastructure performance standards. The proposed project list contains a total of 23 projects, including
arterial roadway improvements, intersection geometric improvements and signalization. The
improvements included in this fee study update have been identified through previous planning studies or
environmental impact analyses conducted in the area. For instance, many of the improvements were
identified in the certified Environmental Impact Report (EIR) for the East Cypress Corridor Specific Plan
as mitigation measures needed to address cumulative traffic impacts.
The total cost of the projects is about $221 million. Of this, approximately $34 million is found to be
attributable to growth within the East County Regional AOB. This cost is spread over the expected
growth in the East County Regional AOB of 3,340 dwelling units and non-residential uses that will create
407 new jobs. The resulting fees for major land use types are shown in Table ES-1.
TABLE ES-1
CALCULATED FEES
Land Use Category Potential Fees
Single-Family Residential $8,594 / D.U.
Multi-Family Residential $4,935 / D.U.
Commercial/Retail $31.74 / S.F.
Office $12.68 / S.F.
Industrial $6.21 / S.F.
Other $8,509 / Peak Hour Trip
1
East County Regional AOB Transportation Mitigation Fee Update
October 2012
1. INTRODUCTION
BACKGROUND
In 1988, Contra Costa County created a Countywide Area of Benefit (“Countywide AOB”) and established
a transportation impact mitigation fee to be imposed on new development in the County to finance
improvements to the arterial road network. In 1993, the Countywide AOB was divided into seven regional
areas of benefit. One of them was the East County Regional AOB, which includes three sub-areas:
Pittsburg/Antioch, Marsh Creek and East County. Ordinance No. 93-24 established the East County
Regional AOB and adopted fees to fund ten improvements identified for that area in a March 9, 1993,
Revised Development Program Report for the Countywide Area of Benefit (“Revised DPR”). In 1997, an
addendum to the Revised DPR was approved, removing State Route 4 improvements from the project list
for the East County Regional AOB, and County Ordinance 97-31 was adopted, reducing the fees for the
East County Regional AOB to eliminate the portion previously allocated to the State Route 4 Bypass.
The fees were to be adjusted annually for inflation.
The capital improvements funded by the East County Regional AOB fee are required to mitigate the traffic
impacts of new development within the East County Regional AOB consistent with the land use and
transportation policies of the County’s General Plan. Specifically, the purpose of the fee is to maintain
baseline levels of service and meet the County’s standards for transportation operations and quality of
service.
Contra Costa County also participates in the East Contra Costa Regional Fee and Finance Authority
(ECCRFFA), a joint powers authority consisting of the cities of Antioch, Oakley, and Brentwood and the
County. ECCRFFA administers the Regional Transportation Development Impact Mitigation (RTDIM) fee
program for the purpose of generating funds to support the provision of regional transportation
infrastructure necessary to serve future travel demand in eastern Contra Costa County. The RTDIM fee
program and the East County Regional AOB program work together to comprehensively address future
transportation needs in eastern Contra Costa County.
PURPOSE
The purpose of this study is to provide the technical basis for a comprehensive update of the East County
Regional AOB fee program . The focus of the updated program is to support an overall transportation
system in the East County Regional AOB that serves the expected future demand based on changes in
regional and local land use projections, planned and approved development projects, and associated
changes to capital improvements and updated cost estimates.
This report documents the analytical approach for determining the nexus between the fees and the local
impact created by anticipated development in the East County Regional AOB. A traffic and fair-share
cost analysis was conducted to equitably distribute the costs of the necessary improvements to
developments that cause the impacts, per the provisions of the Mitigation Fee Act. The most up-to-date
versions of the analytical tools and techniques available at the time this study commenced were used to
ensure the highest level of consistency with current standards.
2
East County Regional AOB Transportation Mitigation Fee Update
October 2012
NEXUS REQUIREMENTS
The Mitigation Fee Act requires local agencies to make certain findings, commonly known as nexus
findings, for any action establishing, increasing, or imposing a fee as a condition of approval of a
development project. These findings include:
• Identifying the purpose of the fee
• Identifying the use of the fee and any public facilities to be funded with the fee
• Determining how there is a reasonable relationship between the fee’s use and the type of
development on which the fee is imposed
• Determining how there is a reasonable relationship between the need for the public facility and
the type of development on which the fee is imposed
• Determining how there is a reasonable relationship between the amount of the fee and the cost of
the public facility (or portion of facility) attributable to development on which the fee is imposed
These items are addressed throughout this study and are summarized in the final chapter.
STUDY AREA
The study area for this nexus analysis is the East County Regional AOB, the boundaries of which are
shown in Figure 1, and captures the development potential anticipated to be subject to the East County
Regional AOB fee. (It should be noted that some nearby unincorporated areas, such as Discovery Bay,
Bay Point and Bethel Island/Jersey Island, have their own areas of benefit and therefore are not part of
the East County Regional AOB.) The goal of the study is to calculate a fee that would be collected on
new development in all unincorporated areas of the East County Regional AOB.
ORGANIZATION OF THE REPORT
This report contains a total of four chapters.
• Chapter 1 – Introduction.
• Chapter 2 – Fee Program Background summarizes the status of the current fee program and
describes the projects proposed to be included in the updated fee program.
• Chapter 3 – Analysis Methodology and Results describes the methods used in conducting the
technical analysis necessary to establish the nexus and the results of the analysis.
• Chapter 4 – Program Summary provides a summary of the study results presented here and
reviews the requirements of the Mitigation Fee Act.
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East County Regional Area of Benefit
(ECRAOB)
Legend
Areas Excluded From Fee Area
East County Regional Area of Benefit
East County Regional Area of Benefit
(ECRAOB)
Figure 1* Note: Incorporated Areas And Clayton Sphere Of Influence Are Excluded From The ECRAOB.
²1:225,000
024681
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Scale:2n
LEGEND
Areas Excluded From Fee Area
East County Regional Area of Benefit
Incorporated areas and Clayton Sphere of Influence
are excluded from the ECRAOB
* NOTE:
Figure 1.
East County Regional Area of Benefit Boundary
WC05-2185B_1_ECAOBboundary
Prepared by:Contra Costa Public Works Dept.
Source Note:Hydrology data from USGS
3
4
East County Regional AOB Transportation Mitigation Fee Update
October 2012
2. FEE PROGRAM BACKGROUND
This chapter summarizes the current status of the traffic mitigation fee in East County and describes the
projects proposed for the updated program.
CURRENT FEE PROGRAM
As described in the previous chapter, the County last updated the fee program for the East County
Regional AOB in 1997, as documented in the July 22, 1997, Addendum to the Revised Development
Program Report for the East County Regional Area of Benefit. The fee levels are adjusted annually to
account for inflation in construction costs. The current fee provides contributions towards a total of nine
improvements, including:
• Widening Lone Tree Way (from Antioch City limit to SR 4 with grade separation at SPRR)
• Realigning and replacing the existing bridge on Deer Valley Road at Marsh Creek
• Improving several locations along Marsh Creek Road between Clayton and Walnut Boulevard
• Modifying the Bailey Road/SR 4 interchange
• Widening Evora Road
• Adding traffic signals to several intersections, including Laurel Extension/Neroly Road, Empire
Avenue/Carpenter Road, Lone Tree Way/ SR 4, and L Street/18th Street
All of these projects, with the exception of the Marsh Creek Road Improvements and Evora Road
Widening, have been completed or substantially completed through the application of AOB and other
funds. Marsh Creek Road will remain on the project list and Evora Road Widening will be removed from
the project list with this ECRAOB program update.
Table 1 displays the current schedule of impact fees for each land use category.
TABLE 1
CURRENT EAST COUNTY REGIONAL AOB TRAFFIC MITIGATION FEES
LAND USE CATEGORY CURRENT FEE
Single-Family Residential $2,466/ D.U.
Multi-Family Residential $1,936/ D.U.
Commercial/Retail $6.18/ S.F.
Office $3.86/ S.F.
Industrial $1.74/ S.F.
Notes: D.U. = Dwelling Unit, S.F. = Square Foot
Source: Contra Costa County Public Works website. Contra Costa County Public Works Dept. Traffic Fee Schedule - Table 1
(As of January 1, 2012).
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
PROPOSED FEE PROGRAM
For many years, East County has been one of the fastest-growing regions in the nation, with dynamically
changing infrastructure needs. The recent completion of the State Route 4 Bypass project has also
changed local and regional travel patterns and demand. The nexus analysis presented in the subsequent
chapters is based on recent interest in updating the list of improvement projects included in the fee
program. The proposed project list includes the Marsh Creek Road improvements project from the
current fee program, along with other projects as determined through traffic studies and environmental
impact analyses generated for planning areas throughout East County. Figure 2 and Table 2 show the
improvement projects to be included in the proposed update to the East County Regional AOB fee
program. Examples of projects to be included in this updated fee program include, but are not limited to:
• Improving portions of Chestnut Street, Delta Road, Knightsen Avenue/Eden Plains Road, Sellers
Avenue, Byron Highway, Sunset Road, and Camino Diablo to County standards.
• Intersection improvements and/or traffic signal installation at Vasco Road/Camino Diablo,
Knightsen Avenue/Delta Road, Byron Highway/State Route 4, Byron Highway/Camino Diablo,
Balfour Road/Byron Highway, Sellers Avenue/Sunset Road, and Sellers Avenue/Chestnut Street.
The nexus analysis presented in the following chapters calculates the fees that could be collected to
support these projects.
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4CALIFORNIA4CALIFORNIA4CALIFORNIA160CALIFORNIA2nLEGENDProject RoadsIncorporated CitiesProject IntersectionsProject ID#Figure 2.East County Regional Area of Benefit ProjectsWC05-2185B_2_ECAOBprojects6
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
3. ANALYSIS METHODOLOGY & RESULTS
This chapter describes the five-step methodology used to determine the nexus between the impact from
new development in the East County Regional AOB and the needed improvements, how these steps
were applied to the East County Regional AOB, and the results of the fee calculations. The focus of the
fee program is on developing an overall transportation system that will accommodate the East County
Regional AOB’s expected future traffic demand.
Each of the five steps in the methodology is listed below, along with a brief description and the results of
the analysis.
Step 1 – Summarize Capital Improvements and Estimate Costs
As described in Chapter 2, a set of transportation projects have been defined to provide the capacity
needed to accommodate future growth in the East County Regional AOB. The project list includes
improvements to County roads, signalization of a number of intersections, and intersection geometric
improvements. Estimated costs for each of the improvements were provided by the Contra Costa County
Public Works Department. Fehr & Peers assisted with cost estimates for the signalization projects. Table
2 provides a list of the improvements, along with the estimated costs. Detailed cost estimates are
included in the Technical Appendix (attached).
TABLE 2
FEE UPDATE PROJECT LIST
ID Project Description Total Cost
1 Vasco Road / Camino
Diablo Intersection
Improvements
Install an exclusive right turn lane on northbound Vasco
Road, dual left turn lanes on westbound Camino Diablo,
dual right turn lanes on eastbound Camino Diablo, and
lengthen the 4-lane section on Vasco Road near the
intersection to provide more room for merging.
$ 3,837,000
2
Marsh Creek Road
Improvements (City of
Clayton to City of
Brentwood)
Various roadway and intersection improvements along
Marsh Creek Road to bring to County standards and
include shoulder width to enhance bicycle use. $ 56,819,000
3 Chestnut Street Widening
(Sellers Ave. to Byron Hwy.) Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 11,836,000
4 Delta Road Widening
(Byron Hwy. to Holland Tract
Rd.)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 10,079,000
5 Knightsen Avenue / Eden
Plains Road Widening (Delta
Rd. to Chestnut St.)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 11,650,000
6 Sunset Road Widening
(Sellers Ave. to Byron Hwy.) Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 12,150,000
7 Byron Highway Widening
(Camino Diablo to the
Alameda County line)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 27,943,000
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 2
FEE UPDATE PROJECT LIST
ID Project Description Total Cost
8 Byron Highway Two Way
Left Turn Lane at Byron
Elementary School
Widen the existing pavement to accommodate a two-
way left turn lane along the frontage of the school
district and Byron Elementary School. $ 1,296,000
9 SR4/Byron Highway South
Intersection Widening
(Phase 2)
Widen the existing pavement to provide two lanes in
each direction along SR4. $ 2,325,000
10 Knightsen Avenue Widening
(East Cypress Rd. to Delta
Rd.)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 6,037,000
11 Delta Road Widening
(Sellers Ave. to Byron Hwy.) Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 9,044,000
12 Sellers Avenue Widening
(Delta Rd. to Chestnut St.) Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 8,890,000
13 Sellers Avenue Widening
(Main Canal to Marsh
Creek)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 5,390,000
14a1 Byron Highway Widening
(Delta Rd. to Chestnut St.)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 11,561,000
14b1 Byron Highway Widening
(Chestnut St. to SR4)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 11,217,000
14c1 Byron Highway Widening
(SR4 to Camino Diablo)
Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 8,220,000
15 Camino Diablo Widening
(Vasco Rd. to Byron Hwy.) Widen roadway to County standard and include
shoulder width to enhance bicycle use. $ 10,431,000
16 Knightsen Avenue / Delta
Road Intersection
Improvements
Signalize intersection and provide an exclusive left turn
lane at all four approaches. $ 1,594,000
17 Byron Highway / Camino
Diablo Intersection
Improvements Install traffic signal and construct railroad crossing. $ 3,499,000
18 Byron Highway / SR 4 /
Point of Timber Intersection
Improvements
Install traffic signal; coordinate with nearby signal at
SR4 and Byron Highway. Install exclusive left-turn lane
at eastbound approach and exclusive right-turn lane at
westbound approach on SR4.
$ 2,271,000
19 Sellers Avenue / Marsh
Creek Road Intersection
Improvements Install traffic signal. $ 657,000
20 Balfour Road / Byron
Highway Intersection
Improvements
Install traffic signal and exclusive left-turn lane at all four
intersection approaches. $ 1,019,000
9
East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 2
FEE UPDATE PROJECT LIST
ID Project Description Total Cost
21 Sellers Avenue / Sunset
Road Intersection
Improvements
Install traffic signal and exclusive left-turn lane at all four
intersection approaches. $ 1,146,000
22 Sellers Avenue / Chestnut
Street Intersection
Improvements
Install traffic signal and exclusive left-turn lane at all four
intersection approaches. $ 1,180,000
23 Sellers Avenue / Balfour
Road Intersection
Improvements
Install traffic signal and exclusive left-turn lane at all four
intersection approaches. $ 980,000
Total $ 221,071,000
Notes:
1 These projects were split into segments based on varying traffic characteristics along these corridors.
Step 2 – Identify Existing Deficiencies on the Network
By definition, a fee program imposes fees on new development to fund transportation improvements
necessary to serve the demand and mitigate the impacts generated by that new development.
Development fees cannot be used to mitigate deficiencies that already exist in the transportation system
prior to the development occurring. Therefore, it must be determined if there are existing deficiencies at
any of the locations with planned improvements listed in Table 2 above.
The capital improvements listed in Table 2 generally consist of two types of projects: 1) projects that
improve intersections by installing traffic signals and/or adding turn lanes; and 2) projects that upgrade
roadways to be consistent with County design standards. The capital improvements list in Table 2
contains 11 intersection improvement projects (project numbers 1, 8, 9, and 16 through 23), and 12
projects to upgrade roadways to County standards (project numbers 2 through 7, and 10 through 15).
Evaluating existing deficiencies for these two types of projects should reflect the purpose of each project
type and the relevant standards that define adequate provision of infrastructure in Contra Costa County.
Intersection Improvements
Intersection improvements, such as adding traffic signals or adding turn lanes, are typically planned for
situations where the intersection cannot efficiently accommodate the level of traffic that is or will be
traveling through it. Standard traffic engineering practice uses the concept of Level of Service (LOS) to
summarize the relationship between the traffic volumes and the capacity of the intersection; a LOS rating
typically reflects the level of delay experienced by drivers traveling through the intersection, with LOS A
reflecting free-flow conditions with almost no vehicle interactions, and LOS F reflecting extremely
congested conditions where drivers experience considerable delay.
The definition of what constitutes an acceptable LOS depends on the plans and policies of the relevant
jurisdictional authority. In this part of Contra Costa County, major regional travel routes are defined in the
East County Action Plan for Routes of Regional Significance, and that plan defines performance
standards for those routes. Of the 11 intersection improvements listed in Table 2, ten of them are located
10
East County Regional AOB Transportation Mitigation Fee Update
October 2012
along Routes of Regional Significance (the one exception is intersection #16, Knightsen Avenue/Delta
Road). However, the East County Action Plan standards for these types of rural routes are not based on
intersection LOS, but rather are based on LOS for two-lane rural highway segments. The Action Plan
designates a standard of mid-LOS D for non-signalized rural roads, such as Byron Highway, Camino
Diablo, Marsh Creek Road, Sellers Avenue, and Vasco Road.
The County’s General Plan does define intersection LOS standards for roads throughout the County, with
different standards for different land use types. The vast majority of the East County Regional AOB area
is defined as a “semi-rural” area in the County General Plan; the General Plan applies a standard of high-
LOS C for intersections in semi-rural areas.
Because there is no applicable intersection LOS standard from the East County Action Plan, and because
the County General Plan standard of LOS C is more stringent than the Action Plan standard of mid-LOS
D, this nexus study applies the General Plan standard of LOS C to determine whether there are existing
deficiencies at any of the intersections slated for improvements through the East County Regional AOB.
Ten of the intersections have been studied in at least one of two recent transportation impact analyses:
the Draft EIR for the Pantages Bays project in Discovery Bay (2011), and the East Cypress Corridor
Specific Plan Final Supplemental EIR (2009). The studies conducted for these two EIRs included
collecting traffic count data at these study intersections and evaluating the current LOS. Table 3 presents
the LOS results for each of the intersections; in cases where the intersection was studied in both EIRs,
the more recent data is reported. As shown in the table, all of the intersections currently operate at LOS
C or better; therefore, there are no existing deficiencies at these intersections.
The one intersection that was not included in either of these studies is intersection #8 (Byron
Highway/Byron Elementary School). Intersection #8 is located along Byron Highway, which is a Route of
Regional Significance. The 2007 Traffic Service Objective Monitoring Report (CCTA, 2008) defines the
following performance standards for Byron Highway: a peak hour roadway LOS of E or better, and a
delay index of less than 2.0. Byron Highway was found to operate at a peak hour LOS C, and its delay
index was less than 2.0. Again, this is a roadway standard rather than an intersection standard, but it
does indicate that Byron Highway generally operates acceptably.
Intersection #8 functions solely to provide access to the local elementary school. Traffic demand around
schools is typically very peaked, with heavy demand during the 15-minute period around bell times and
relatively low demand the rest of the day. While direct traffic observations at this intersection are not
available from recent sources, the information presented in the CCTA TSO Monitoring Report indicates
that congestion along this general corridor is not a substantial issue. In addition, the peaked nature of
school traffic means that intersections serving schools often experience focused congestion around bell
times, but the LOS results for the entire peak hour are only marginally affected by the school traffic. The
proposed capital improvement project is to install a two-way left-turn lane along the school frontage,
which would more efficiently serve traffic turning left into the school driveway. In light of the available
information, it is reasonable to conclude that this intersection does not have an existing deficiency.
Roadway Projects
In outlying areas of Contra Costa such as East County, it is common to find that the basic roadway
system was built many decades ago when the area was rural and largely undeveloped, and when the
overall demand for vehicular travel was quite low. As the East County area has experienced substantial
development activity in the more recent past, the amount of vehicular travel taking place on once-rural
roads has dramatically increased.
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
The East County Action Plan defines several roadways in the East County Regional AOB area as Routes
of Regional Significance. Existing LOS results for those routes are shown in Table 4, drawn from the
information presented in the August 2009 East County Action Plan. It should be noted that the East
County Regional AOB projects may not be located directly within the roadway segment described, since
the Action Plan defines an average LOS for an entire corridor. All of the roadways are shown to operate
at LOS C or better; however, this is not the only method of evaluating capacity and service quality.
The Highway Capacity Manual (Transportation Research Board, 2010, Chapter 15) accounts for a
number of factors in evaluating the capacity and service quality of a rural roadway. Many of these factors
relate to the geometric design characteristics of the roadway, including the width of the travel lanes, the
width of the shoulders, the number of access points (cross-streets or driveways) per mile, and the
proportion of the roadway length where passing is not allowed. The ideal condition is the absence of
restrictive geometric conditions so that traffic can generally travel at the speed limit. W hen the road has
non-ideal conditions (i.e., travel lanes that are less than 12 feet wide, shoulders that are less than six feet
wide, high numbers of access points, long and/or frequent no-passing zones), travel speeds are
constrained and the capacity of the roadway is reduced. True capacity conditions are rarely observed
along rural roadways; as stated in the HCM, “because service quality deteriorates at relatively low
demand flow rates, most two-lane highways are upgraded before demand approaches capacity.”
Therefore, the service quality (or LOS) along these types of roadways is defined not by the theoretical
capacity of the road, but by the travel speed and the percent of time that vehicles spend following other
vehicles (due to difficult terrain, high numbers of slow-moving vehicles, or frequent no-passing zones).
Many of the rural roadways in East County have non-ideal geometric conditions, often with narrow travel
lanes and non-existent shoulders. Historically, when the area was largely undeveloped, traffic volumes
were very low so these non-ideal conditions did not cause significant problems for the traveling public. As
travel demand has increased, travel speeds have become constrained and the percent of time that
vehicles spend following other vehicles has increased, particularly along corridors where traffic from
nearby suburban developments comes into conflict with slow-moving trucks or farm equipment. Most
current users of these roads would consider them deficient; the roads are serving much higher volumes of
traffic than they were designed to accommodate and the non-ideal geometric conditions have become
increasingly problematic as constraints on travel speeds and service quality. Additional future
development in East County will further exacerbate these issues by adding more traffic to these rural
roads, increasing conflicts with other users and further constraining speeds.
The County has adopted design standards for rural roads as provided in the Contra Costa County
Standard Plans, Two Lane Rural Road Guidelines, CA-53i, which are intended to improve the geometric
conditions so that adequate service quality can be maintained. Table 5 shows the existing roadway width
and the County’s desired roadway width for each of these facilities. The County standards include wider
travel lanes and paved shoulders, to support vehicular safety and to enhance bicycle usage. Several
local and regional policies encourage bicycle usage along roadways in East County, including Goal 11
from the East County Action Plan for Routes of Regional Significance (August 2009) and Goals 5-x and
5-ai in the County’s General Plan.
As the information in Table 5 shows, none of the roadways currently provide the desired roadway widths,
and widening would be necessary to meet County Standards. Therefore, for purposes of this nexus study,
all of the roads that are proposed to be upgraded to County standards are considered to have existing
deficiencies, and appropriate adjustments to the project costs included in the East County Regional AOB
program to account for these existing deficiencies have been applied in Step 4.
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 3
EXISTING LEVEL OF SERVICE AT STUDY INTERSECTIONS
ID Intersection Control1 Time
Period
HCM Method CCTALOS Method
Delay2, 3 LOS4 V/C Ratio5 LOS4
1 Vasco Road / Camino
Diablo6 Signal AM
PM
33.1
33.6
C
C
0.61
0.63
B
B
8 Byron Highway / Byron
Elementary School7 SSS AM
PM
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
9 SR4 / Byron Highway
South6 Signal AM
PM
28.7
14.4
C
B
0.77
0.58
C
A
16 Knightsen Avenue / Delta
Road8 AWS AM
PM
11.0
9.0
B
A
n/a
n/a
n/a
n/a
17 Byron Highway / Camino
Diablo6 SSS AM
PM
5.3 (17.1)
6.5 (17.0)
A (C/WB)
A (C/WB)
n/a
n/a
n/a
n/a
18 Byron Highway / SR 4 /
Point of Timber6 SSS AM
PM
5.6 (10.4)
3.2 (10.0)
A (B/WB)
A (A/WB)
n/a
n/a
n/a
n/a
19 Sellers Avenue / Marsh
Creek Road6 SSS AM
PM
12.9
12.1
B
B
n/a
n/a
n/a
n/a
20 Balfour Road / Byron
Highway6 AWS AM
PM
10.0
9.2
A
A
n/a
n/a
n/a
n/a
21 Sellers Avenue / Sunset
Road8 AWS AM
PM
14.0
10.0
B
A
n/a
n/a
n/a
n/a
22 Sellers Avenue / Chestnut
Street8 AWS AM
PM
11.0
11.0
B
B
n/a
n/a
n/a
n/a
23 Sellers Avenue / Balfour
Road6 AWS AM
PM
10.0
10.4
A
B
n/a
n/a
n/a
n/a
Notes:
1. Signal = Signalized intersection, SSS = side-street stop-controlled intersection, AWS = all-way stop controlled intersection
2. Signalized and all-way stop intersection level of service based on average intersection control delay according to the
Highway Capacity Manual (Transportation Research Board, 2000).
3. For side-street stop controlled intersections, delay for worst approach (in seconds per vehicle) is presented in parenthesis.
All calculations reflect the 2000 Highway Capacity Manual methods. The worst approach is indicated by WB (westbound),
EB (eastbound), NB (northbound), or SB (southbound).
4. LOS = Level of Service
5. CCTALOS method applies only to signalized intersections and relies on volume to capacity (v/c) ratios, as described in
Technical Procedures (Contra Costa Transportation Authority, 2006).
6. Data comes from the Pantages Bays Transportation Analysis, August 2011.
7. Existing intersection conditions unavailable, but is located along a Route of Regional Significance that operates at LOS C,
as reported in 2007 Traffic Service Objectives Monitoring Report, CCTA, 2008.
8. Data comes from the East Cypress Corridor Specific Plan Final Supplemental EIR, February 2009. Delay results are
rounded to the nearest whole number.
Fehr & Peers, 2012
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 4
EXISTING ROADWAY SEGMENT LEVELS OF SERVICE ON ROUTES OF REGIONAL SIGNIFICANCE
Segment 1 Project ID(s) 2 Direction Level of Service 3
AM Peak Hour PM Peak Hour
Byron Highway (north of
Mountain House Road) 7, 9, 14a, 14b, 14c Northbound
Southbound
C
C
C
C
Camino Diablo Road (west of
Vasco Road) 15 Eastbound
Westbound
B
B
B
B
Marsh Creek Road (east of
Deer Valley Road) 2 Eastbound
Westbound
B
C
C
B
Notes:
1. Note that the segment described here may be longer or shorter than the segment addressed in the roadway
improvements included in the ECRAOB project list.
2. Note that these projects may not be located directly within the roadway segment described.
3. Roadway segment LOS taken from baseline year 2007 observations from the East County Action Plan for Routes of
Regional Significance (August 2009). The LOS reported is for the average conditions over the entire roadway segment
described.
Fehr & Peers, 2012.
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 5
EXISTING WIDTHS OF ROADS TO BE UPGRADED TO COUNTY STANDARDS
ID Project Description
Existing
Average
Pavement
Width (feet)
Desirable
Two-Lane
Pavement
Width (feet) 1
2 Marsh Creek Road
Improvements
Various roadway and intersection
improvements to bring to County standards,
and shoulder width to enhance bicycle use.
22 40
3 Chestnut Street Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 22 34
4 Delta Road Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 26 32
5 Knightsen Avenue / Eden
Plains Road Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 22 34
6 Sunset Road Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 22 34
7 Byron Highway Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 24 40
10 Knightsen Avenue Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 26 34
11 Delta Road Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 26 36
12 Sellers Avenue Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 26 34
13 Sellers Avenue Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 20 34
14a Byron Highway Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 19 40
14b Byron Highway Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 24 40
14c Byron Highway Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 30 40
15 Camino Diablo Widening Widen roadway to County standard and
include shoulder width to enhance bicycle use. 22 34
Notes:
1. Desirable widths are defined by County Standard Plans, CA-53i, for a two-lane rural road. Widths were determined based on
average daily traffic (ADT) or, where ADT was unavailable, from peak hour intersection counts multiplied by ten to estimate
ADT. Sources of ADT and intersection counts were the CCTA TSO Monitoring Report (September 2008), the Pantages Bays
Transportation Analysis (August 2011) and the East Cypress Corridor Specific Plan Final Supplemental EIR (February 2009).
Total width includes shoulders and travel lanes.
Fehr & Peers, 2012.
15
East County Regional AOB Transportation Mitigation Fee Update
October 2012
Step 3 – Summarize the Amount of New Development Expected in the East County Regional AOB
Projections of future growth and development in the East County Regional AOB are a critical element of
the fee update process, influencing both the area’s traffic contributions to individual roadway facilities as
well as the number of new units over which the cost of the capital improvements will be spread.
Step 3 consists of the following three sub-steps:
a) estimating the amount of new development expected in the AOB
b) converting the projections of future employment into estimates of building area
c) converting the overall land use projections into the units necessary for fee calculation
The three sub-steps are described more fully below.
Step 3a - Estimating Future New Development in the AOB
The East County Regional AOB includes unincorporated areas of eastern Contra Costa County,
excluding the existing Discovery Bay AOB, Bay Point AOB and Bethel Island AOB. The study area
addressed in this analysis is described in Chapter 1 of this report.
Land use projections for this study area are based on data used in the Contra Costa Transportation
Authority (CCTA) Decennial Model, as it was available at the time this study was undertaken. CCTA has
reviewed and updated land use projections throughout the County in close coordination with local agency
staff. The CCTA data include residential and employment projections to the year 2030 that are consistent
in total with the Association of Bay Area Government’s (ABAG) Projections 2005 and that include
feedback from local agencies. The CCTA model groups the land use data into geographic areas called
Traffic Analysis Zones (TAZs); for reference, the identification numbers of all the TAZs that are part of the
East County Regional AOB for the purposes of this study are provided in the attached Technical
Appendix.
The land use data includes projections for years 2000, 2010, 2020, and 2030. Because the CCTA data
did not segregate households and employment into sub-categories, the proportions of each housing and
employment type from the CCTA model were applied to the total housing and employment numbers for
both 2010 and 2030 to determine the more detailed land use that will be used for fee modeling and fee
purposes. In zones where the existing CCTA model had zero land use of a particular type, overall
Countywide averages were used to proportion the future land use into specific housing or employment
sub-categories.
Based on projections, the development in the East County Regional AOB that would contribute to the fee
program includes 3,340 new residential dwelling units and non-residential uses that will create 407 new
jobs. The housing types are split into two categories: Single-Family and Multi-Family. Non-residential
uses are divided into three categories: Commercial/Retail, Office and Industrial. These categories are
used by the CCTA Decennial Model to estimate overall County-wide trip generation. The development
totals are summarized in Table 6.
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 6
EAST COUNTY REGIONAL AOB HOUSING AND EMPLOYMENT PROJECTIONS
Land Use Category Units 2010 Land Use 2030 Land Use Net Growth
(2010 to 2030)
Single-Family Dwelling Units 4,110 6,515 2,405
Multi-Family Dwelling Units 805 1,740 935
Total Residential Growth 4,915 8,255 3,340
Commercial/Retail Jobs 145 294 149
Office Jobs 455 515 60
Industrial Jobs 1,995 2,193 198
Total Job Growth 2,595 3,002 407
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
Step 3b - Converting Employment Projections to Building Area
The ABAG-based land use forecasts for the East County Regional AOB include both residential and non-
residential uses. Non-residential uses are represented in terms of numbers of jobs. Because the fees
will be assessed on the basis of building area, the forecasts of total jobs were converted into building area
by applying the following factors, which are consistent with those used in the RTDIM fee program and
have been approved by County staff:
• Commercial/Retail: 500 square feet/job
• Office: 275 square feet/job
• Industrial: 400 square feet/job
These factors reflect relationships between employment and building area that can be derived from the
Trip Generation publication of the Institute of Transportation Engineers, and are consistent with factors
used in recent General Plan analyses and other traffic studies in eastern Contra Costa County. Table 7
summarizes the development growth projections in terms of residential dwelling units and employment
square footage.
TABLE 7
EAST COUNTY REGIONAL AOB DEVELOPMENT PROJECTIONS
Land Use Category Units 2010 Land Use 2030 Land Use Net Growth
(2010 to 2030)
Single-Family Dwelling Units 4,110 6,515 2,405
Multi-Family Dwelling Units 805 1,740 935
Total Residential 4,915 8,255 3,340
Commercial/Retail 1,000 Square Feet 72 147 74
Office 1,000 Square Feet 125 142 17
Industrial 1,000 Square Feet 798 877 79
Total Non-Residential 996 1,166 170
Step 3c - Converting Land Use Projections to Trip Generation
Historically, AOB programs within Contra Costa County have adopted fee schedules based on average
PM peak hour trip generation rates by land use category. The PM peak hour factor adopted by the Board
of Supervisors in 1993 for the East County Regional AOB is reported in Table 8. For comparison
purposes, the average PM peak hour trip rate from the latest edition of the Institute of Transportation
Engineers’ (ITE) Trip Generation, 8th Edition is also reported in Table 8.
18
East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 8
PM PEAK HOUR TRIP FACTORS
Land Use Category Unit ECRAOB PM Peak Hour
Factor1
ITE PM Peak Hour Trip
Rate2
Single-Family DU 1.00 1.01
Multi-Family DU 0.80 0.58
Commercial/Retail 1,000 Sq. Ft. 2.50 3.73
Office 1,000 Sq. Ft. 1.60 1.49
Industrial 1,000 Sq. Ft. 0.70 0.73
Notes:
1. Source: Revised Development Report for the Countywide Area of Benefit (March 9, 1993).
2. Source: ITE Trip Generation, 8th Edition. Land use codes used are 210 (Single-Family Detached Housing), 221
(Low-Rise Apartment), 820 (Shopping Center), 710 (General Office Building), and 140 (Manufacturing).
This fee program update maintains the County’s current practice of assessing fees per PM peak hour trip,
and uses the PM peak hour trip rates from the most recent version of the standard reference document,
ITE Trip Generation, 8th Edition. Using a peak hour trip rate-based fee accounts for differences in traffic
generated by various land uses, and also provides a relatively straightforward method for assessing fees
for unusual land uses. The East County Regional AOB housing and non-residential building area
projections from Table 7 can be converted to trips based on the ITE factors in Table 8. Table 9 presents
the net growth, trip rate factors, and growth converted to trips.
TABLE 9
GROWTH IN TRIPS
Land Use Category Net Growth Trip Rate Per Unit Growth Converted to Trips
Single-family units 2,405 DU 1.01 2,429
Multi-family units 935 DU 0.58 542
Total residential 3,340 DU 2,971
Commercial/Retail 74 KSF 3.73 276
Office 17 KSF 1.49 25
Industrial 79 KSF 0.73 58
Total Employment 170 KSF 359
TOTAL TRIPS 3,330
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
Step 4 – Calculate Project Costs Attributable to New Development
The next step in determining the fee is to calculate the portion of each capital improvement project’s costs
that are attributable to new development within the East County Regional AOB area.
Step 4 consists of the following two sub-steps:
a) Determining the proportion of project costs that can justifiably be included in the fee program
b) Estimating the traffic contributions on those transportation facilities from new development in the
East County Regional AOB area
The two sub-steps are described more fully below.
Step 4a – Determining Project Costs for Inclusion in Fee Program
The project list shown in Table 2 includes both intersection improvements and roadway improvements.
As described under Step 2, none of the locations identified for intersection improvement projects currently
experience existing deficiencies, so the additional capacity provided by installing a traffic signal or adding
turn lanes would serve future demand. Therefore, all of the estimated cost for the intersection
improvement projects is included in the fee program.
The roadway improvement projects in Table 2 are intended to upgrade rural or semi-rural roads to current
County design standards in order to better accommodate the levels of traffic demand that they will need
to serve. As described under Step 2, all of these roads are currently deficient because they do not
comply with the County’s design standards and they are serving much higher levels of traffic than they
were originally designed to serve, which is having a detrimental effect on travel speeds and overall quality
of service. Costs to be included in the East County Regional AOB program for these roadway upgrade
projects have been determined based on new development’s proportional share of the total future
dwelling units, commercial/retail, office and industrial space. As shown in Table 9, the new development
in East County is anticipated to add 3,330 peak hour trips to the regional road system. If the 2030 Land
Uses shown in Table 7 were also converted to trips using the same conversion factors, it would represent
8,989 trips. Therefore, new development represents 37% of the anticipated future total travel (3,330
divided by 8,989), so 37% of the costs of these projects are included in the fee program.
Step 4b – Estimating Traffic Contributions from East County Regional AOB
The next step is to determine how much of the traffic on the improved facility is attributable to new
development in the East County Regional AOB, and how much is attributable to growth outside the East
County Regional AOB. This level of analysis requires the use of a regional travel demand model, which
uses land use and transportation network inputs to produce estimates of future travel demand and usage
of roadway facilities. This study used the most recent version of the regional travel demand model
adopted for use in Contra Costa County that was available at the time of the study. This model,
developed and maintained by the CCTA and implemented in the TransCAD software program, is the
primary transportation analysis tool available at this time for regional planning studies in eastern Contra
Costa County.
20
East County Regional AOB Transportation Mitigation Fee Update
October 2012
In this study, model runs were conducted to estimate future (2030) traffic demand based on the land use
projections shown in Table 7. For each improvement project, the CCTA model was used to determine the
amount of local traffic using the affected intersection or roadway segment.
For purposes of this study, the County was segmented into three geographic regions, and traffic
contributions from each of these regions were identified separately:
1. East County Regional AOB
2. Other areas in eastern Contra Costa County (including Oakley, Brentwood, Bay Point, Pittsburg,
Antioch, Discovery Bay, Bethel Island, and Jersey Island)
3. Areas outside eastern Contra Costa County
The CCTA Model was run with the updated land use projections to obtain vehicle trip distribution
matrices. These matrices contain data for all possible origin and destination combinations by traffic
analysis zone (TAZ). The base year matrix was subtracted from the future year matrix to obtain a
“growth” distribution matrix. This matrix thus contained the vehicle trips in 2030 that could be attributed to
new development.
Using a modeling technique known as “multiclass assignment,” traffic from the growth matrix was tracked
as it was assigned throughout the network. Concurrent with the multiclass assignment, another modeling
technique known as “select link” or “select node” analysis was used to capture the origins and
destinations of travelers on specific roadway segments and intersections. This process produces
information that can be used to calculate proportional shares.
Trips with either an origin or a destination in the East County Regional AOB were assigned to the East
County Regional AOB. For example, if a trip began in Oakley and ended in the East County Regional
AOB, it was considered to be an East County Regional AOB trip. Trips which neither started nor ended in
the East County Regional AOB were divided in two, and half of the trip was assigned to the origin location
and half to the destination location. For example, if a trip began in Oakley and ended in Livermore, it was
assigned half to “Other eastern Contra Costa County” and half to “Outside eastern Contra Costa County.”
Trips that both began and ended outside the eastern Contra Costa County area without stopping in
eastern Contra Costa County were assigned entirely to “Outside eastern Contra Costa County.”
Table 10 summarizes these calculations and shows the resulting amounts that would be included in the
fee program in the column titled Potential AOB Fee Contribution.
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East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 10
POTENTIAL FEE CONTRIBUTIONS
ID Project Total Cost
Estimate
Adjustment
for Existing
Deficiencies1
East
County
Regional
AOB
Share2
Potential
AOB Fee
Contribution
1 Vasco Road / Camino Diablo
Intersection Improvements $ 3,837,000 100% 11% $ 422,000
2 Marsh Creek Road Improvements (City
of Clayton to City of Brentwood) $ 56,819,000 37% 18% $ 3,784,000
3 Chestnut Street Widening
(Sellers Ave to Byron Hwy.) $ 11,836,000 37% 78% $ 3,416,000
4 Delta Road Widening
(Byron Hwy. to Holland Tract Road) $ 10,079,000 37% 100% $ 3,729,000
5 Knightsen Ave/Eden Plains Rd
Widening
(Delta Road to Chestnut Street) $ 11,650,000 37% 66% $ 2,825,000
6 Sunset Road Widening
(Sellers Ave to Byron Hwy.) $ 12,150,000 37% 81% $ 3,641,000
7 Byron Hwy. Widening
(Camino Diablo to the Alameda County
line) $ 27,943,000 37% 9% $ 931,000
8 Byron Highway Two Way Left Turn
Lane at Byron Elementary School $ 1,296,000 100% 20% $ 259,000
9 SR4/Byron Highway South Intersection
Widening (Phase 2) $ 2,325,000 100% 15% $ 349,000
10 Knightsen Ave Widening
(East Cypress Road to Delta Road) $ 6,037,000 37% 28% $ 625,000
11 Delta Road Widening
(Sellers Ave to Byron Hwy.) $ 9,044,000 37% 30% $ 1,004,000
12 Sellers Ave Widening
(Delta Road to Chestnut Street) $ 8,890,000 37% 24% $ 789,000
13 Sellers Ave Widening
(Main Canal to Marsh Creek) $ 5,390,000 37% 60% $ 1,197,000
14a3 Byron Highway Widening
(Delta Road to Chestnut Street) $ 11,561,000 37% 56% $ 2,395,000
14b3 Byron Highway Widening
(Chestnut Street to SR 4) $ 11,217,000 37% 62% $ 2,573,000
14c3 Byron Highway Widening
(SR 4 to Camino Diablo) $ 8,220,000 37% 20% $ 608,000
15 Camino Diablo Widening
(Vasco Road to Byron Hwy.) $ 10,431,000 37% 11% $ 425,000
16 Knightsen Ave / Delta Road Intersection
Improvements $ 1,594,000 100% 37% $ 590,000
22
East County Regional AOB Transportation Mitigation Fee Update
October 2012
TABLE 10
POTENTIAL FEE CONTRIBUTIONS
ID Project Total Cost
Estimate
Adjustment
for Existing
Deficiencies1
East
County
Regional
AOB
Share2
Potential
AOB Fee
Contribution
17 Byron Highway / Camino Diablo
Intersection Improvements $ 3,499,000 100% 14% $ 490,000
18 Byron Highway / Point of Timber
Intersection Improvements $ 2,271,000 100% 62% $ 1,408,000
19 Sellers Ave / Marsh Creek Road
Intersection Improvements $ 657,000 100% 24% $ 158,000
20 Balfour Road / Byron Highway
Intersection Improvements $ 1,019,000 100% 77% $ 785,000
21 Sellers Ave / Sunset Road Intersection
Improvements $ 1,146,000 100% 34% $ 390,000
22 Sellers Ave / Chestnut Street
Intersection Improvements $ 1,180,000 100% 35% $ 413,000
23 Sellers Ave / Balfour Road Intersection
Improvements $ 980,000 100% 43% $ 421,000
TOTAL $221,071,000 $ 33,647,000
Existing Fee Account Balance $ 5,310,000
Total Cost Minus Existing Funds $ 28,337,000
Projected Growth in Trips 3,330
Fee per Trip $ 8,509
Notes:
1. Determination of existing deficiencies is described under Step 2 above. Intersection improvement projects are not subject
to existing deficiencies, so are assigned a 100% factor. Projects to upgrade roadways to County standards are subject to
existing deficiencies, so are assigned a 43% factor. The calculation of these factors is described under Step 4a above.
2. Includes adjustments described under Step 4b above. See Appendix for traffic proportions for other areas.
3. These projects were split into segments based on varying traffic characteristics along these corridors.
Source: Fehr & Peers, 2011.
23
East County Regional AOB Transportation Mitigation Fee Update
October 2012
Step 5 – Determine Fee Amounts
As shown at the bottom of Table 10, there is currently a balance of $5,310,000 in the East County
Regional AOB Traffic Mitigation Fee account. This balance was subtracted from the total cost to be
contributed by new development ($33,647,000) and the result was divided by the total number of new
trips expected in the East County Regional AOB (3,330) to determine the resulting fee per trip ($8,509).
Table 11 displays the calculated impact fees by land use category, applying the trip rate per unit of
development shown in Table 7. These figures do not reflect any reductions or subsidies that the County
may choose to implement. This calculation also does not consider the effects of other funding sources
that may be available to some of the projects.
TABLE 11
FEE CALCULATIONS
Land Use Category Current Fees1 Potential Fees2
Single-Family Residential $2,466 / D.U. $8,594 / D.U.
Multi-Family Residential $1,936 / D.U. $4,935 / D.U.
Commercial/Retail $6.18 / S.F. $31.74 / S.F.
Office $3.86 / S.F. $12.68 / S.F.
Industrial $1.74 / S.F. $6.21 / S.F.
Other $8,509 / Peak Hour Trip
Notes:
1. Source: Contra Costa County Public Works Department Traffic Fee Schedule, as of January 1, 2012.
2. Potential Fee = Fee per Trip from Table 10 * Trip Rate per Unit from Table 9.
The new potential fee amounts represent a significant change from the current fee schedule, for a variety
of reasons. The total cost of the program has increased since the 1997 fee study, due to a combination
of factors such as the inclusion of additional capital improvements and increases in the cost of
construction and right-of-way acquisition. The 1997 fee study estimated the cost of the overall program at
about $20 million (in 1997 dollars)1, while the estimated cost to be covered by this updated program is
about $34 million (in current dollars). In addition, there has already been a substantial amount of
development in the East County Regional AOB area over the last 15 years; therefore, the remaining
development potential that would share in the cost of the overall program has been reduced.
The analytical tools and techniques used to develop the fee calculations have also changed since 1997.
This update makes use of the regional travel demand model available from CCTA, which was adopted for
use in eastern Contra Costa County in the summer of 2005 and incorporates regional land use
projections and feedback from local cities. All of these elements are different from those used in the 1997
fee study, and account for the differences in the fee levels presented above.
1 Total cost of projects funded by the East County Regional Area of Benefit, including the SR 4 Bypass Project, from the
Addendum to the Revised Development Program Report for the East County Regional Area of Benefit, 7/7/97.
24
East County Regional AOB Transportation Mitigation Fee Update
October 2012
4. NEXUS FINDINGS
This report provides a detailed discussion of the elements of the proposed East County Regional AOB fee
program and explains the analytical techniques used to develop this nexus study. The report addresses
all of the nexus findings required by the Mitigation Fee Act, as described below.
• Identify the Purpose of the Fee
The purpose of the fee program is to mitigate the traffic impacts of new development within the
East County Regional AOB by generating funds to construct transportation improvements,
consistent with the land use and transportation policies of the Contra Costa County General Plan.
• Identify How the Fee Will Be Used and the Facilities to be Funded Through the Fee
The fee will be used to help fund capital improvement projects necessary to accommodate future
traffic demand in unincorporated eastern Contra Costa County. Table 2 identifies the specific
projects to be funded through the fee.
• Determine How There is a Reasonable Relationship Between the Fee’s Use and the Type of
Development Project on Which the Fee is Imposed
The East County Regional AOB fee will be used to provide improvements to the transportation
network as needed to accommodate growth and to maintain current County standards for quality
of service. All new development in the East County Regional AOB will contribute additional traffic
to the road network within that area generally, and specifically to the locations of the
improvements. The growth in the East County Regional AOB will be comprised of different types
of land uses, which may include single-family and multi-family residential, office, industrial and
commercial/retail. The number of trips that the development of these land uses will add to the
roadway network is shown in Table 9. These additional trips resulting from the development
projects will create the need to expand, extend or improve the existing transportation facilities in
order to maintain the County’s infrastructure standards. The fees collected to mitigate the
increased trip generation will be used to fund the identified projects in Table 2.
The fee calculation methodology used in this report allocates fees to the types of land use
proportional to the amount of new traffic generated in the East County Regional AOB by that land
use. As a result, the proposed fees to be collected for the specified improvements are directly
related to the traffic impacts of each particular land use category. This methodology ensures that
the fees collected from new development in each of the land use categories are used to fund the
improvements in proportion to the amount of new traffic that is generated based on the type of
land use.
• Determine How There is a Reasonable Relationship Between the Need for the Public Facility and
the Type of Development on Which the Fee is Imposed
The traffic generated by new development causes the need to improve the regional transportation
system in order to efficiently accommodate the new traffic, and the fee is proposed to be used to
address those needs. The need for the facilities listed in Table 2 has been established through a
series of technical reports and studies conducted over the last several years, as described in
25
East County Regional AOB Transportation Mitigation Fee Update
October 2012
Chapter 2. All of the intersections proposed to be improved in Table 2 currently meet the
applicable performance standards, so there are no existing deficiencies at those locations and the
need for improvement is triggered by the anticipated future development. All of the roadway
projects in Table 2 involve upgrading rural or semi-rural roadways to current County design
standards. These roadways are currently deficient because they do not meet County design
standards and the quality of service they provide has been compromised; adjustments to the fee
amount charged for these roadway improvements have been applied to account for these existing
deficiencies.
The new development anticipated in this report is consistent with the policies from the Contra
Costa County General Plan and the expectations of the County’s professional planners, and the
CCTA regional travel model used in this study is the accepted regional planning tool for
determining the transportation impacts generated by different development types. As shown in
Table 10, the fee program includes only that portion of the cost that is attributable to new
development in the East County Regional area.
• Determine How There is a Reasonable Relationship Between the Amount of the Fee and the
Cost of the Public Facility (or Portion of Facility) Attributable to New Development
The nexus analysis presented in this report is based on cost estimates that have been prepared
according to the County’s standard procedures and that reflect reasonably anticipated costs for
the identified capital improvements. Existing deficiencies have been accounted for in the fee
calculations. The costs attributable to traffic demand generated outside the East County Regional
AOB have been removed from the program, as shown in Table 10. Thus, the fee program is
targeted toward the costs of public improvements attributable to new development within the East
County Regional AOB.
Technical Appendix
East County Regional Area of Benefit
Transportation Mitigation Fee Update
Prepared for:
Contra Costa County
October 2012
WC05-2185B
Appendix A
Cost Estimates
East County Regional Area of Benefit
Transportation Mitigation Fee Update
Prepared for:
Contra Costa County
October 2012
WC05-2185B
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Vasco Road and Camino Diablo Intersection
Project Location:Intersection of Marsh Creek Road and Camino Diablo
Project Length:assume T = 9.0 and R = 5
Date of Estimate:Mar. 3, 2005 Revision No.1
Revision Date 4/25/2007
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Construction Area Signs 9 EACH 250.00$ 2,250$
2 Traffic Control 1 LS 35,000.00 35,000$
3 Mobilization 1 LS 20,000.00 20,000$
4 Sawcut Existing Pavement 1 LS 2,500.00 2,500$
5 Clearing and Grubbing 1 LS 10,000.00 10,000$
6 Earthwork (cut-modify slope)4300 CY 40.00 172,000$
7 Roadway Excavation 7100 CY 60.00 426,000$
8 Aggregate Base (Class 2)10500 TON 35.00 367,500$
9 Asphalt Concrete 4050 TON 100.00 405,000$
10 Minor Concrete (Concrete Lined "V" Ditch)6000 SF 15.00 90,000$
11 Minor Concrete (Type A inlet)3 EACH 3,000.00 9,000$
12 18" Reinforced Concrete Pipe 100 LF 125.00 12,500$
13 Asphalt Concrete Dike 2000 LF 7.00 14,000$
14 Shoulder Backing 400 TON 50.00 20,000$
15 Thermoplastic Pavement Striping 10000 LF 3.00 30,000$
16 Thermoplastic Pavement Stripe (12" white)50 FT 5.00 250$
17 Thermoplastic Pavement Markings 1 LS 10,000.00 10,000$
18 Call Box Relocation 1 LS 5,000.00 5,000$
19 Road Signs - Metal Posts 6 Each 300.00 1,800$
20 Fence Relocation 2000 LF 15.00 30,000$
21 Traffic Signal Modification 1 LS 300,000.00 300,000$
22 Grassy Swale 9300 SF 15.00 139,500$
23 Other Drainage Work for the Grassy Swale 1 LS $20,000.00 $20,000
OTHER COSTS:Preliminary Engineering (15%)$318,345 SUBTOTAL 2,122,300$
Construction Engineering (15%)$318,345 OTHER COSTS $1,104,170
RW Engineering $30,000 SUBTOTAL $3,226,470
R/W Acquisition **$160,250 CONTINGENCY*$610,161
Utility Coordination $15,000 TOTAL $3,836,631
Mobilization $212,230
Environmental $50,000
Total OTHER COSTS $1,104,170
ROUNDED TOTAL $3,837,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
**May need to aquire R/W at top of slope; additional r/w for grassy swale is also included in this estimate
G:\TransEng\Projects\Vasco Camino Diablo Intersection\Vasco Camino Diablo Int rt turn pocket Cost Est Rev (2007-04-26)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Marsh Creek Road Improvements
Alternative:
Project Location:Various locations along Marsh Creek Road
Assumptions:Assumed R = 5 and TI = 7.0; AB = 0.95 and HMA = 0.50 based on CalFP v 1.1 w/ conservative HMA thickness
Project Length (ft):36,960
Date of Estimate:1/7/2010 Revision No.
Revision Date
Prepared by:Jenna Caldwell Revised by
No.Description Quantity Units Unit Cost Total
1 Construction Area Signs 96 EA 550.00$ 52,800$
2 Traffic Control System 16 LS 20,000.00$ 320,000$
3 Prepare Water Pollution Control Plan 16 LS 10,000.00$ 160,000$
4 Remove Thermoplastic Traffic Stripe 55,440 SF 2.00$ 110,880$
5 Remove Culvert 4,096 LF 25.00$ 102,400$
6 Remove Headwall (Endwall)32 EA 600.00$ 19,200$
7 Remove Downdrain 32 EA 600.00$ 19,200$
8 Remove Pavement 147,840 SF 3.00$ 443,520$
9 Clearing and Grubbing 16 LS 30,000.00$ 480,000$
10 Remove Tree 400 EA 500.00$ 200,000$
11 Saw Cut Pavement Edges 73,920 LF 2.00$ 147,840$
12 Roadway Excavation 59,114 CY 55.00$ 3,251,288$
13 Imported Material (Shoulder Backing)5,174 TON 50.00$ 258,700$
14 Class 2 Aggregate Base 41,783 TON 60.00$ 2,506,980$
15 Hot Mix Asphalt (Type A)23,562 TON 130.00$ 3,063,060$
16 Minor Concrete (Endwall)16 EA 4,000.00$ 64,000$
17 Roadside Sign - One Post (Bike Route)32 EA 350.00$ 11,200$
18 18" CMP (Extension, Replacement)2,048 LF 150.00$ 307,200$
19 24" CMP (Extension, Replacement)1,024 LF 150.00$ 153,600$
20 8" CMP Downdrain 1,024 LF 100.00$ 102,400$
21 12" CMP Downdrain 1,024 LF 100.00$ 102,400$
22 24" CMP Energy Dissipator 96 EA 5,000.00$ 480,000$
23 Rock Slope Protection (Riprap Pipe Outfall)96 LS 5,000.00$ 480,000$
24 Timber Structure (Stairs, Fence, etc.)10 LS 20,000.00$ 200,000$
25 Misc. Retaining Structures 92,400 SF 56.00$ 5,174,400$
26 Metal Beam Guard Railing (Wood Post)12,320 LF 115.00$ 1,416,800$
27 C.3 Provisions and Misc. Drainage 25,133 SF 50.00$ 1,256,650$
28 Thermoplastic Traffic Stripe - Det. 21, No Passing Zones 36,960 LF 3.00$ 110,880$
29 Thermoplastic Traffic Stripe - Det. 27B, Right Edge Line 73,920 LF 2.00$ 147,840$
30 Mobilization 1 LS 2,115,000.00$ 2,115,000$
OTHER COSTS BY PHASE:
PLAN Planning Engineering (TE)1,536,000$ CONTRACT ITEMS 23,258,000$
PE Preliminary Engineering (Design/Survey)*3,488,700$ OTHER COSTS (CON)5,009,000$
Utility Coordination (Design)400,000$ SUBTOTAL (CON)28,267,000$
Environmental (Environmental, Real Property)2,496,000$ SUBTOTAL (PLAN)1,536,000$
R/W R/W Engineering (Survey)480,000$ SUBTOTAL (PE)6,384,700$
Real Property Labor 2,400,000$ SUBTOTAL (R/W)11,328,000$
R/W Acquisition 8,448,000$ CONTINGENCY*9,303,500$
CON Construction Engineering [15% of contract]3,489,000$ TOTAL 56,819,200$
Environmental Monitoring and Mitigation Fees 1,520,000$ CURRENT YEAR 2010
SUBTOTAL of OTHER COSTS (ALL)24,257,700$ ESCALATION YEAR 2010
* Preliminary Engineering is 15% of contract items ESCALATION RATE 0.0%
* CONTINGENCY is 25% of contract items plus construction engineering. ($10,000 min.)TOTAL (in 2010 dollars)56,819,000$
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\transeng\AOB\East County Regional AOB\Update_2010\6- Project List & Cost\_Cost Estimate\2_MarshCrkRdImprovements\Marsh Creek Road
Improvements\cost-Marsh Creek Road Improvements (2010)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Chestnut Street Widening Assumed R = 5 and TI = 9
(for East County AOB Update; planning level estimate)
Project Location:Chestnut Street between Sellers Avenue and Byron Highway
Project Length:10,580 feet or 2 miles
Date of Estimate:Feb. 16, 2006 Revision No.1
Revision Date 5/1/2007
Prepared by:Jason Chen
No.Description Quantity Units Unit Cost Total
1 Traffic Control 1 LS 20,000.00$ 20,000$
2 Construction Area Signs 12 EA 250.00$ 3,000$
3 Mobilization (move to below)- LS -$ -$
4 Clearing and Grubbing (assumed $15,000 per mile)1 LS 30,000.00$ 30,000$
5 Earthwork (fill or cut)39,009 CY 40.00$ 1,560,354$
6 Road Excavation 12,931 CY 60.00$ 775,867$
7 Sawcut 21,160 LF 2.00$ 42,320$
8 Remove existing striping 31,740 LF 3.00$ 95,220$
9 Grassy Swale 126,960 SF 15.00$ 1,904,400$
10 Misc minor drainage work/mod (assumed $10k/mile)1 LS 20,000.00$ 20,000$
11 Aggregate base (1.3 ft)21,943 TON 40.00$ 877,729$
12 Asphalt concrete (0.65 ft)9,834 TON 90.00$ 885,070$
13 Driveway conforms (assumed at least 1 per parcel)33 EA 3,000.00$ 99,000$
14 Relocate mailbox (assumed 1 per parcel)29 EA 300.00$ 8,700$
15 Striping (Detail 27B Right Edge line)21,160 LF 3.00$ 63,480$
16 Striping (Detail 22 Center line)10,580 LF 3.00$ 31,740$
17 Pavement Markings and other misc striping 1 LS 3,000.00$ 3,000$
18 Striping (Detail 39 & 39A Bike lane)21,160 LF 3.00$ 63,480$
19 Misc fence relocation (assumed $5,000/mile)1 LS 10,000.00$ 10,000$
20 Concrete ditch relocation 1,850 LF 30.00$ 55,500$
21 Irrigation ditch modification at ditch intersections 1 LS 90,000.00$ 90,000$
22 - -$ -$
23 - -$ -$
OTHER COSTS:Preliminary Engineering (15%)$995,829 SUBTOTAL $6,638,859.98
Construction Engineering (Select 15% from table)$995,829 OTHER COSTS $3,288,394
RW Engineering (assumed $25,000/mile)$50,000 SUBTOTAL $9,927,254
Real Property (10 parcels @ $5,000 per parcel)$50,000 CONTINGENCY*$1,908,672
R/W Acquisition (for 60 ft ROW; 80,570 SF@$5/SF)$402,850 TOTAL $11,835,926
Environmental $100,000
Utility Coordination $30,000
Mobilization $663,886
Total OTHER COSTS $3,288,394
ROUNDED TOTAL $11,836,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
G:\transeng\AOB\East County Regional AOB\Update Process\AOB update\Chestnut Street Widening (Sellers to
Byron)\Cost Estimate Rev (2007-05-01)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Delta Road Widening
Project Location:Delta Road Widening (between Byron Highway to Holland Tract Road)
Project Length:1.9 miles (10,132 LF)
Date of Estimate:July 2006 Revision No.1
Revision Date 5/2/07
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $30,000.00 $30,000.00
2 Construction Area Signs 1 LS $3,500.00 $3,500.00
3 Moblization 0 LS $0.00 $0.00
4 Clearing and Grubbing (assume $15000 per mile)1 LS $30,000.00 $30,000.00
5 Remove existing striping 20300 L.F.$3.00 $60,900.00
6 Earthwork 36000 C.Y.$40.00 $1,440,000.00
7 Relocate Roadside Sign 12 EA $250.00 $3,000.00
8 Relocate Mailbox (assumed 1 per parcel)12 EA $300.00 $3,600.00
9 Sawcut 20300 L.F.$2.00 $40,600.00
10 Asphalt Concrete 9900 Ton $90.00 $891,000.00
11 Aggregate Base 19100 Ton $40.00 $764,000.00
12 Driveway Conform (assumed 1 per parcel)12 EA $3,000.00 $36,000.00
13 Grassy Swale 121584 SF $15.00 $1,823,760.00
14 Metel Beam Guard Rail (Wood Post)80 L.F.$35.00 $2,800.00
15 Thermoplastic Striping - Detail 27B 20300 L.F.$3.00 $60,900.00
16 Thermoplastic Striping - Detail 2 10150 L.F.$3.00 $30,450.00
17 Pavement Marking 126 S.F.$7.00 $882.00
18 Misc minor driange work/mod (assumed $10,000)1 LS $20,000.00 $20,000.00
OTHER COSTS:Preliminary Engineering (15%)$786,209 SUBTOTAL (a)$5,241,392
Construction Engineering (15%)$786,209 OTHER COSTS $3,329,757
RW Engineering $60,000 SUBTOTAL (b)$8,571,149
Real Property $60,000 CONTINGENCY*$1,506,900
R/W Acquisition $1,013,200 TOTAL $10,078,049
Environmental $50,000
Utility Coordination $50,000
Mobilization $524,139
Total OTHER COSTS $3,329,757
ROUNDED TOTAL $10,079,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Delta Road Widening\Delta Road Widening Estimate (ByronHwy to Holland Tract) Rev (2007-05-02)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Knightsen Ave Widening
Project Location:Knightsen Ave/Eden Plains Rd Widening (between Delta Road and Chestnut Street)
Project Length:2.7 miles (14,393 LF)
Date of Estimate:June 2006 Revision No.1
Revision Date 5/2/07
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $30,000.00 $30,000.00
2 Mobilization 0 LS $0.00 $0.00
3 Construction Area Signs 1 LS $3,500.00 $3,500.00
4 Clearing and Grubbing (assume $15000 per mile)1 LS $40,000.00 $40,000.00
5 Remove existing striping 28800 LF $3.00 $86,400.00
6 Relocate Roadside Sign 20 EA $250.00 $5,000.00
7 Driveway Conform (Assume one per parcel)63 EA $3,000.00 $189,000.00
8 Sawcut 28800 L.F.$2.00 $57,600.00
9 Asphalt Concrete 11227 Ton $90.00 $1,010,430.00
10 Aggregate Base 21705 Ton $40.00 $868,200.00
11 Roadway Excavation 16632 C.Y.$60.00 $997,920.00
12 Grassy Swale 172716 SF $15.00 $2,590,740.00
13 Thermoplastic Striping - Detail 27B 28800 L.F.$3.00 $86,400.00
14 Pavement Marking 100 S.F.$7.00 $700.00
15 Misc Minor Drainage Work/Mod (assume $10,000 per mile)1 LS $27,000.00 $27,000.00
OTHER COSTS:Preliminary Engineering (15%)$898,934 SUBTOTAL (a)$5,992,890
Construction Engineering (15%)$898,934 OTHER COSTS $3,933,456
RW Engineering $15,000 SUBTOTAL (b)$9,926,346
Real Property $300,000 CONTINGENCY*$1,722,956
R/W Acquisition $1,151,300 TOTAL $11,649,302
Environmental $50,000
Utility Coordination $20,000
Mobilization $599,289
Total OTHER COSTS $3,933,456
ROUNDED TOTAL $11,650,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Knightsen Ave Widening\Knightsen Ave
Widening(DeltaRd to ChestnutSt) Estimate Rev (2007-05-02)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Sunset Road Widening (Sellers Ave to Byron Hwy)Assumed R = 5 and TI = 9
(for East County AOB Update; planning level estimate)
Project Location:Sunset Road between Sellers Avenue and Byron Highway
Project Length:11,300 feet or 2.14 miles
Date of Estimate:Feb. 15, 2006 Revision No.1
Revision Date 5/1/2007
Prepared by:Jason Chen
No.Description Quantity Units Unit Cost Total
1 Traffic Control 1 LS 20,000.00$ 20,000$
2 Construction Area Signs 26 EA 250.00$ 6,500$
3 Mobilization - LS -$ -$
4 Clearing and Grubbing (assumed $15,000 per mile)1 LS 32,100.00$ 32,100$
5 Earthwork (fill or cut)41,664 CY 40.00$ 1,666,541$
6 Road Excavation 13,811 CY 60.00$ 828,667$
7 Sawcut 22,600 LF 2.00$ 45,200$
8 Remove existing striping 33,900 LF 3.00$ 101,700$
9 Grassy Swale 135,600 SF 15.00$ 2,034,000$
10 Misc minor drainage work/mod (assumed $10k/mile)1 LS 21,400.00$ 21,400$
11 Aggregate base (1.3 ft)23,437 TON 40.00$ 937,461$
12 Asphalt concrete (0.65 ft)10,503 TON 90.00$ 945,302$
13 Driveway conforms (assumed 1 per parcel)57 EA 3,000.00$ 171,000$
14 Relocate mailbox (assumed 1 per parcel)57 EA 300.00$ 17,100$
15 Striping (Detail 27B Right Edge line)22,600 LF 3.00$ 67,800$
16 Striping (Detail 22 Center line)11,300 LF 3.00$ 33,900$
17 Pavement Markings and other misc striping 1 LS 3,000.00$ 3,000$
18 Striping (Detail 39 & 39A Bike lane)22,600 LF 3.00$ 67,800$
19 Misc fence relocation (assumed $5,000/mile)1 LS 10,700.00$ 10,700$
20 Concrete ditch relocation 300 LF 30.00$ 9,000$
21 Irrigation ditch modification at ditch intersection 1 LS 30,000.00$ 30,000$
22 - -$ -$
23 - -$ -$
OTHER COSTS:Preliminary Engineering (15%)$1,057,376 SUBTOTAL $7,049,170.30
Construction Engineering (Select 15% from table)$1,057,376 OTHER COSTS $3,073,918
RW Engineering (assumed $25,000/mile)$53,500 SUBTOTAL $10,123,088
Real Property ($5,000 per parcel)$5,000 CONTINGENCY*$2,026,636
R/W Acquisition (for 60 ft ROW; 13,150 SF@$5/SF)$65,750 TOTAL $12,149,725
Environmental $100,000
Utility Coordination $30,000
Mobilization $704,917
Total OTHER COSTS $3,073,918
ROUNDED TOTAL $12,150,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Sunset Road Widening (Seller to Byron)\Cost Estimate Rev (2007-05-
01)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Byron Highway Widening
Project Location:Byron Highway, From Camio Diablo to County Limit Line
Project Length:27,250 Feet
Date of Estimate:May. 14, 2007 Revision No.
Revision Date
Prepared by:J. Hernandez
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS 70,000.00$ 70,000$
2 Construction Area Signs 10 EA 250.00$ 2,500$
3 Clearing and Grubbing 1 LS 70,000.00$ 70,000$
4 Relocate Fence 6,000 LF 20.00$ 120,000$
5 Earthwork (Roadside Ditch)4,037 CY 30.00$ 121,111$
6 Extend Roadway Culvert 340 LF 500.00$ 170,000$
7 Rock Slope Protection 2,006 TON 70.00$ 140,448$
8 Metal Beam Guardrail 210 LF 60.00$ 12,600$
9 Sawcut 54,500 LF 1.00$ 54,500$
10 Roadway Excavation (widening)50,463 CY 50.00$ 2,523,148$
11 Shoulder Backing 3,815 TON 40.00$ 152,600$
12 Aggregate Base (widening)61,040 TON 35.00$ 2,136,400$
13 Asphalt Concrete (widening)16,350 TON 100.00$ 1,635,000$
14 Driveway Conforms 60 EA 300.00$ 18,000$
15 Traffic Striping, Detail 27B 54,500 LF 3.00$ 163,500$
16 Grassy Swale 330,000 SF 15.00$ 4,950,000$
17 Other Drainage Work for Grassy Swale 1 LS 500,000.00$ 500,000$
18 500,000.00$ -$
OTHER COSTS:Preliminary Engineering (15%)$1,925,971 SUBTOTAL 12,839,807$
Construction Engineering $1,925,971 OTHER COSTS $11,411,163
RW Engineering $380,000.00 SUBTOTAL 24,250,970$
Real Property $420,000.00 CONTINGENCY*$3,691,445
R/W Acquisition $5,295,240.00 TOTAL $27,942,415
Mobilization $1,283,981
Utility Coordination $80,000
Environmental $100,000
Total OTHER COSTS $11,411,163
ROUNDED TOTAL $27,943,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\transeng\AOB\East County Regional AOB\Update Process\COST ESTIMATE\8_ByronHwy Widening (CaminoDiablo-
AlamedaCo)\Byron Hwy Widening_Diablo to Alameda-May 2007
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Byron Highway Left Turn Lane at Byron Elementary School
Project Location:Byron Highway at Byer Road
Project Length:1,400 feet
Date of Estimate:April 20, 2005 Revision No.2
Revision Date 5/7/07
Prepared by:J. Hernandez
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $15,000.00 $15,000.00
2 Construction Area Signs 8 EA $250.00 $2,000.00
3 Roadway Excavation 2,074 CY $60.00 $124,444.44
4 Sawcut Pavement 1,400 LF $4.00 $5,600.00
5 Aggregate Sub-base (1.20' section)2,239 TON $50.00 $111,930.00
6 Aggregate Base (0.80' section)1,490 TON $45.00 $67,032.00
7 Asphalt Concrete (0.50' section)1,050 TON $90.00 $94,500.00
8 Pavement Markers - Type D 150 EA $10.00 $1,500.00
9 Thermoplastic Striping - Detail 27B 1,405 LF $3.00 $4,215.00
10 Thermoplastic Striping - Detail 32 2,810 LF $3.50 $9,835.00
11 Thermoplastic Pavement Markings - Type III(L)576 SF $4.00 $2,304.00
12 Relocate Flasher 1 EA $10,000.00 $10,000.00
13 Relocate Traffic Signs 2 EA $500.00 $1,000.00
14 Minor Concrete (Curb & Gutter)30 LF $75.00 $2,250.00
15 Relocate Mailbox 1 EA $300.00 $300.00
16 Clearing and Grubbing 1 LS $15,000.00 $15,000.00
17 Grassy Swale 16,800 LF $15.00 $252,000.00
18 Misc Minor Drainage Work/Mod 1 LS $10,000.00 $10,000.00
OTHER COSTS:Preliminary Engineering (15%)$109,337 SUBTOTAL (a)$728,910.44
Construction Engineering (15%)$109,337 OTHER COSTS $356,564.18
RW Engineering $0 SUBTOTAL (b)$1,085,474.62
Real Property $0 CONTINGENCY*$209,561.75
R/W Acquisition $0 TOTAL $1,295,036.38
Environmental $50,000
Mobilization $72,891
Utility Coordination $15,000
Total OTHER COSTS $356,564
ROUNDED TOTAL $1,296,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\Projects\Byron Hwy at Byron Elementary School\Byron Hwy Left Turn Lane Rev (2007-05-07)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:SR4/Byron Hwy Intersection (south) Phase II
Project Location:South intersection of SR4/Byron Hwy
Project Length:1200-ft
Date of Estimate:Dec. 2006 Revision No.1
Revision Date 5/3/2007
Prepared by:B. Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control 1 LS 25,000.00$ 25,000$
2 Construction Area Signs 1 LS 3,500.00$ 3,500$
3 Clear and Grub 1 LS 25,000.00$ 25,000$
4 Remove existing striping 3000 LF 2.00$ 6,000$
5 Sawcut 2000 LF 2.00$ 4,000$
6 Asphalt Concrete 1500 ton 90.00$ 135,000$
7 Aggregate base 5655 ton 40.00$ 226,200$
8 Roadway Excavation 3630 CY 60.00$ 217,800$
9 Grade roadside ditch 2000 LF 2.00$ 4,000$
10 Mofify Traffic Signal 1 LS 200,000.00$ 200,000$
11 Thermoplastic Traffic Stripe 4900 LF 2.00$ 9,800$
12 Thermoplastic Pavement Markings 251 SF 6.00$ 1,506$
13 Grassy Swale 6000 SF 15.00$ 90,000$
14 Misc Drainage (assume $20,000)1 LS 20,000.00$ 20,000$
15 Modify Traffic Signal 1 LS 300,000.00$ 300,000$
OTHER COSTS:Preliminary Engineering (15%)$190,171 SUBTOTAL 1,267,806$
Construction Engineering $190,171 OTHER COSTS $692,122
RW Engineering (3 pacels)$30,000 SUBTOTAL $1,959,928
Real Property (3 parcels)$30,000 CONTINGENCY*$364,494
R/W Acquisition ($5 x 11,000 SF)$55,000 TOTAL $2,324,423
Mobilization $126,781
Utility Coordination $20,000
Environmental $50,000
Total OTHER COSTS $692,122
ROUNDED TOTAL $2,325,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\TransEng\Projects\SR4 Byron Hwy Intersection Phase II\SR4 Byron Hwy Intersection Phase II estimate Rev (2007-05-03)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Knightsen Ave Widening
Project Location:Knightsen Ave/Eden Plains Rd Widening (between Delta Road and East Cypress Road)
Project Length:1.4 miles (7,633 LF)
Date of Estimate:June 2006 Revision No.1
Revision Date 5/2/07
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $30,000.00 $30,000.00
2 Mobilization 0 LS $0.00 $0.00
3 Construction Area Signs 1 LS $3,500.00 $3,500.00
4 Clearing and Grubbing (assume $15000 per mile)1 LS $21,000.00 $21,000.00
5 Remove existing striping 15300 LF $3.00 $45,900.00
6 Relocate Roadside Sign 20 EA $250.00 $5,000.00
7 Driveway Conform (Assume one per parcel)62 EA $3,000.00 $186,000.00
8 Sawcut 15300 L.F.$2.00 $30,600.00
9 Asphalt Concrete 5954 Ton $90.00 $535,860.00
10 Aggregate Base 11511 Ton $40.00 $460,440.00
11 Roadway Excavation 8820 C.Y.$60.00 $529,200.00
12 Grassy Swale 91596 SF $15.00 $1,373,940.00
13 Thermoplastic Striping - Detail 27B 15300 L.F.$3.00 $45,900.00
14 Pavement Marking 100 S.F.$7.00 $700.00
15 Misc Minor Drainage Work/Mod (assume 10,000 per mile)1 LS $14,000.00 $14,000.00
OTHER COSTS:Preliminary Engineering (15%)$492,306 SUBTOTAL (a)$3,282,040
Construction Engineering (15%)$492,306 OTHER COSTS $1,810,566
RW Engineering $15,000 SUBTOTAL (b)$5,092,606
Real Property $300,000 CONTINGENCY*$943,587
R/W Acquisition $112,750 TOTAL $6,036,193
Environmental $50,000
Utility Coordination $20,000
Mobilization $328,204
Total OTHER COSTS $1,810,566
ROUNDED TOTAL $6,037,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Knightsen Ave Widening\Knightsen Ave
Widening(DeltaRd to EastCypressRd) Estimate Rev (2007-05-02)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Delta Road Widening
Project Location:Delta Road Widening (between Sellers Avenue to Byron Highway)
Project Length:2.0 miles (10,432 LF)
Date of Estimate:July 31, 2006 Revision No.1
Revision Date 5/2/07
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $30,000.00 $30,000.00
2 Construction Area Signs 1 LS $3,500.00 $3,500.00
3 Clearing and Grubbing (assume $15000 per mile)1 LS $55,500.00 $55,500.00
4 Remove existing striping 21000 L.F.$3.00 $63,000.00
5 Earthwork 29400 C.Y.$40.00 $1,176,000.00
6 Relocate Roadside Sign 12 EA $250.00 $3,000.00
7 Relocate Mailbox (assumed 1 per parcel)66 EA $300.00 $19,800.00
8 Sawcut 21000 L.F.$2.00 $42,000.00
9 Asphalt Concrete 9662 Ton $90.00 $869,580.00
10 Aggregate Base 18681 Ton $40.00 $747,240.00
11 Driveway Conform (assumed 1 per parcel)66 EA $3,000.00 $198,000.00
12 Grade Roadside Ditch 125184 SF $15.00 $1,877,760.00
13 Thermoplastic Striping - Detail 27B 21000 L.F.$3.00 $63,000.00
14 Pavement Marking 126 S.F.$7.00 $882.00
15 Minor Drainage Work/Mod (assume $10,000 per mile)1 LS $20,000.00 $20,000.00
OTHER COSTS:Preliminary Engineering (15%)$775,389 SUBTOTAL (a)$5,169,262
Construction Engineering (15%)$775,389 OTHER COSTS $2,387,705
RW Engineering $15,000 SUBTOTAL (b)$7,556,967
Real Property $50,000 CONTINGENCY*$1,486,163
R/W Acquisition $185,000 TOTAL $9,043,130
Environmental $50,000
Utility Coordination $20,000
Mobilization $516,926
Total OTHER COSTS $2,387,705
ROUNDED TOTAL $9,044,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Delta Road Widening\Delta Road Widening Sellers to ByronHwy Estimate Rev
(2007-05-02)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Sellers Avenue Widening
Project Location:Sellers Avenue between Chestnut Street and Delta Road; East County Area
Project Length:2.3 miles (12,008 LF)
Date of Estimate:June 2006 Revision No.1
Revision Date 5/2/07
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $30,000.00 $30,000.00
2 Mobilization 0 LS $0.00 $0.00
3 Construction Area Signs 1 LS $3,500.00 $3,500.00
4 Clearing and Grubbing (assume $15000 per mile)1 LS $34,500.00 $34,500.00
5 Remove existing striping 24000 LF $3.00 $72,000.00
6 Relocate Roadside Sign 20 EA $250.00 $5,000.00
7 Driveway Conform (Assume one per parcel)50 EA $3,000.00 $150,000.00
8 Sawcut 24000 L.F.$2.00 $48,000.00
9 Asphalt Concrete 9366 Ton $90.00 $842,940.00
10 Aggregate Base 18108 Ton $40.00 $724,320.00
11 Roadway Excavation 13876 C.Y.$60.00 $832,560.00
12 Grassy Swale 144096 SF $15.00 $2,161,440.00
13 Thermoplastic Striping - Detail 27B 24000 L.F.$3.00 $72,000.00
14 Pavement Marking 100 S.F.$7.00 $700.00
15 Minor Drainage Work/Mod (assume $10,000 per mile)1 LS $23,000.00 $23,000.00
OTHER COSTS:Preliminary Engineering (15%)$749,994 SUBTOTAL (a)$4,999,960
Construction Engineering (15%)$749,994 OTHER COSTS $2,452,484
RW Engineering $57,500 SUBTOTAL (b)$7,452,444
Real Property $125,000 CONTINGENCY*$1,437,489
R/W Acquisition $200,000 TOTAL $8,889,933
Environmental $50,000
Utility Coordination $20,000
Mobilization $499,996
Total OTHER COSTS $2,452,484
ROUNDED TOTAL $8,890,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Sellers Avenue Widening\Sellers Ave DeltaRD to ChestnutST Estimate Rev
(2007-05-02)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Sellers Avenue Widening
Project Location:Sellers Avenue between Marsh Creek Road and the Main Canal; East County Area
Project Length:1.4 miles (7145 LF)
Date of Estimate:June 2006 Revision No.1
Revision Date 5/2/07
Prepared by:Brian Louis
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS $30,000.00 $30,000.00
2 Mobilization 0 LS $0.00 $0.00
3 Construction Area Signs 1 LS $3,500.00 $3,500.00
4 Clearing and Grubbing (assume $15000 per mile)1 LS $21,000.00 $21,000.00
5 Remove existing striping 14290 LF $3.00 $42,870.00
6 Relocate Roadside Sign 20 EA $250.00 $5,000.00
7 Driveway Conform (Assume one per parcel)19 EA $3,000.00 $57,000.00
8 Sawcut 14290 L.F.$2.00 $28,580.00
9 Asphalt Concrete 5575 Ton $90.00 $501,750.00
10 Aggregate Base 10775 Ton $40.00 $431,000.00
11 Roadway Excavation 8256 C.Y.$60.00 $495,360.00
12 Grassy Swale 85740 SF $15.00 $1,286,100.00
13 Thermoplastic Striping - Detail 27B 14290 L.F.$3.00 $42,870.00
14 Pavement Marking 100 S.F.$7.00 $700.00
15 Misc Drainage Work/Mod (assume $10,000 per mile)1 LS $14,000.00 $14,000.00
OTHER COSTS:Preliminary Engineering (15%)$443,960 SUBTOTAL (a)$2,959,730
Construction Engineering (15%)$443,960 OTHER COSTS $1,578,892
RW Engineering $35,000 SUBTOTAL (b)$4,538,622
Real Property $190,000 CONTINGENCY*$850,922
R/W Acquisition $100,000 TOTAL $5,389,544
Environmental $50,000
Utility Coordination $20,000
Mobilization $295,973
Total OTHER COSTS $1,578,892
ROUNDED TOTAL $5,390,000
* CONTINGENCY is 25% of (SUBTOTAL (a) plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Sellers Avenue Widening\Sellers Ave MainCanal to MarshCrkRD Estimate
Rev (2007-05-02)
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Byron Highway Widening Segment 1
Project Location:Byron Highway from Delta Road to Chestnut Street
Project Length:13,300 feet
Date of Estimate:Oct. 22, 2007 Revision No.
Revision Date
Prepared by:JAB LaRocque
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS 50,000.00$ 50,000$
2 Construction Area Signs 16 EA 300.00$ 4,800$
3 Clearing and Grubbing 1 LS 60,000.00$ 60,000$
4 Relocate Fence 26,600 LF 20.00$ 532,000$
5 Earthwork (Roadside Ditch)2,000 CY 30.00$ 60,000$
6 Extend Roadway Culvert 150 LF 500.00$ 75,000$
7 Sawcut 26,600 LF 2.00$ 53,200$
8 Roadway Excavation (widening)24,700 CY 55.00$ 1,358,500$
9 Shoulder Backing 1,000 TON 45.00$ 45,000$
10 Aggregate Base (widening)15,800 TON 40.00$ 632,000$
11 Asphaltic Emulsion-Slurry Seal 7,874 SY 1.00$ 7,874$
12 Asphalt Concrete (widening)4,000 TON 150.00$ 600,000$
13 Driveway Conforms 35 EA 300.00$ 10,500$
14 Traffic Striping, Detail 22 13,300 LF 3.00$ 39,900$
15 Traffic Striping, Detail 27B 26,600 LF 3.00$ 79,800$
16 Grassy Swale 51,100 SF 15.00$ 766,500$
17 Other Drainage Work for Grassy Swale 1 LS 25,000.00$ 25,000$
18 EBMUD Crossing 1 EA 30,000.00$ 30,000$
19 Rail Road Crossing 1 LS 200,000.00$ 200,000$
OTHER COSTS:Preliminary Engineering (15%)$664,511 SUBTOTAL 4,430,074$
Construction Engineering $664,511 OTHER COSTS $5,856,304
RW Engineering $155,000 SUBTOTAL 10,286,378$
Real Property $310,000 CONTINGENCY*$1,273,646
R/W Acquisition $3,369,275 TOTAL $11,560,024
Mobilization $443,007
Utility Coordination $150,000
Environmental $100,000
Total OTHER COSTS $5,856,304
ROUNDED TOTAL $11,561,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\TransEng\AOB\East County Regional AOB\Update Process\COST ESTIMATE\15_BryronHwyWidening (DeltaRd-Camino Diablo)\Byron Hwy Shoulder
Delta to Diablo-Segment 1
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Byron Highway Widening Segment 2
Project Location:Byron Highway from Chestnut Street to State Route 4 (north)
(Byron Highway/State Route 4 segment (1,200ft) is not included in this cost estimate. There is a separate cost estimate)
Project Length:14,200 feet
Date of Estimate:Oct. 22, 2007 Revision No.
Revision Date
Prepared by:JAB LaRocque
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS 50,000.00$ 50,000$
2 Construction Area Signs 12 EA 300.00$ 3,600$
3 Clearing and Grubbing 1 LS 60,000.00$ 60,000$
4 Relocate Fence 28,400 LF 20.00$ 568,000$
5 Earthwork (Roadside Ditch)2,300 CY 30.00$ 69,000$
6 Extend Roadway Culvert 150 LF 500.00$ 75,000$
7 Sawcut 28,400 LF 2.00$ 56,800$
8 Roadway Excavation (widening)28,600 CY 55.00$ 1,573,000$
9 Shoulder Backing 1,200 TON 45.00$ 54,000$
10 Aggregate Base (widening)18,300 TON 40.00$ 732,000$
11 Asphaltic Emulsion-Slurry Seal 63,110 SY 1.00$ 63,110$
12 Asphalt Concrete (widening)4,600 TON 150.00$ 690,000$
13 Driveway Conforms 20 EA 300.00$ 6,000$
14 Traffic Striping, Detail 22 14,200 LF 3.00$ 42,600$
15 Traffic Striping, Detail 27B 28,400 LF 3.00$ 85,200$
16 Grassy Swale 59,200 SF 15.00$ 888,000$
17 Other Drainage Work for Grassy Swale 1 LS 25,000.00$ 25,000$
18 Box Culvert 2 EA 100,000.00$ 200,000$
OTHER COSTS:Preliminary Engineering (15%)$786,197 SUBTOTAL 5,241,310$
Construction Engineering $786,197 OTHER COSTS $4,468,498
RW Engineering $95,000 SUBTOTAL 9,709,808$
Real Property $190,000 CONTINGENCY*$1,506,877
R/W Acquisition $1,786,974 TOTAL $11,216,684
Mobilization $524,131
Utility Coordination $150,000
Environmental $150,000
Total OTHER COSTS $4,468,498
ROUNDED TOTAL $11,217,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\TransEng\AOB\East County Regional AOB\Update Process\COST ESTIMATE\15_BryronHwyWidening (DeltaRd-Camino Diablo)\Byron Hwy Shoulder
Delta to Diablo-Segment 2
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Byron Highway Widening Segment 3
Project Location:Byron Highway from State Route 4 (south) to Camino Diablo
Project Length:8,550 feet
Date of Estimate:Oct. 22, 2007 Revision No.
Revision Date
Prepared by:JAB LaRocque
No.Description Quantity Units Unit Cost Total
1 Traffic Control System 1 LS 50,000.00$ 50,000$
2 Construction Area Signs 20 EA 300.00$ 6,000$
3 Clearing and Grubbing 1 LS 50,000.00$ 50,000$
4 Relocate Fence 17,100 LF 20.00$ 342,000$
5 Earthwork (Roadside Ditch)1,300 CY 30.00$ 39,000$
6 Extend Roadway Culvert 150 LF 500.00$ 75,000$
7 Sawcut 17,100 LF 2.00$ 34,200$
8 Roadway Excavation (widening)15,900 CY 55.00$ 874,500$
9 Shoulder Backing 700 TON 45.00$ 31,500$
10 Aggregate Base (widening)10,200 TON 40.00$ 408,000$
11 Asphaltic Emulsion-Slurry Seal 38,000 SY 1.00$ 38,000$
12 Asphalt Concrete (widening)2,600 TON 150.00$ 390,000$
13 Driveway Conforms 65 EA 300.00$ 19,500$
14 Traffic Striping, Detail 22 8,550 LF 3.00$ 25,650$
15 Traffic Striping, Detail 27B 17,100 LF 3.00$ 51,300$
16 Grassy Swale 32,900 SF 15.00$ 493,500$
17 Other Drainage Work for Grassy Swale 1 LS 25,000.00$ 25,000$
18 Box Culvert 2 EA 100,000.00$ 200,000$
OTHER COSTS:Preliminary Engineering (15%)$472,973 SUBTOTAL 3,153,150$
Construction Engineering $472,973 OTHER COSTS $4,160,016
RW Engineering $315,000 SUBTOTAL 7,313,166$
Real Property $630,000 CONTINGENCY*$906,531
R/W Acquisition $1,753,756 TOTAL $8,219,696
Mobilization $315,315
Utility Coordination $100,000
Environmental $100,000
Total OTHER COSTS $4,160,016
ROUNDED TOTAL $8,220,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\TransEng\AOB\East County Regional AOB\Update Process\COST ESTIMATE\15_BryronHwyWidening (DeltaRd-Camino Diablo)\Byron Hwy Shoulder
Delta to Diablo-Segment 3
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Camino Diablo Assumed R = 5 and TI = 9
(for East County AOB Update; planning level estimate)
Project Location:Camino Diablo between Vasco Road and Byron Highway
Project Length:8,520 feet or 1.61 miles
Date of Estimate:Feb. 16, 2006 Revision No.1
Revision Date 5/2/2007
Prepared by:Jason Chen
No.Description Quantity Units Unit Cost Total
1 Traffic Control 1 LS 25,000.00$ 25,000$
2 Construction Area Signs 24 EA 250.00$ 6,000$
3 Mobilization - LS -$ -$
4 Clearing and Grubbing (assumed $15,000 per mile)1 LS 24,150.00$ 24,150$
5 Earthwork (fill or cut)38,505 CY 40.00$ 1,540,203$
6 Road Excavation 8,938 CY 60.00$ 536,267$
7 Sawcut 17,040 LF 2.00$ 34,080$
8 Remove existing striping 25,560 LF 3.00$ 76,680$
9 Grassy Swale 102,240 SF 15.00$ 1,533,600$
10 Misc minor drainage work/mod (assumed $10k/mile)1 LS 16,100.00$ 16,100$
11 Aggregate base (1.3 ft)23,538 TON 40.00$ 941,534$
12 Asphalt concrete (0.65 ft)10,549 TON 90.00$ 949,408$
13 Driveway conforms (assumed at least 1 per parcel)42 EA 3,000.00$ 126,000$
14 Relocate mailbox (assumed 1 per parcel)42 EA 300.00$ 12,600$
15 Striping (Detail 27B Right Edge line)17,040 LF 3.00$ 51,120$
16 Striping (Detail 22 Center line)8,520 LF 3.00$ 25,560$
17 Pavement Markings and other misc striping 1 LS 2,000.00$ 2,000$
18 Striping (Detail 39 & 39A Bike lane)17,040 LF 3.00$ 51,120$
19 Misc fence relocation (assumed $5,000/mile)1 LS 8,050.00$ 8,050$
20 Concrete ditch relocation - LF 30.00$ -$
21 Irrigation ditch modification at ditch intersection 1 LS 30,000.00$ 30,000$
22 - -$ -$
23 - -$ -$
OTHER COSTS:Preliminary Engineering (15%)$898,421 SUBTOTAL $5,989,471.86
Construction Engineering (Select 15% from table)$898,421 OTHER COSTS $2,718,839
RW Engineering (assumed $25,000/mile)$40,250 SUBTOTAL $8,708,311
Real Property (2 parcels @ $5,000 each)$10,000.00 CONTINGENCY*$1,721,973
R/W Acquisition (slope easement; 28,560SF@$3/SF)$142,800.00 TOTAL $10,430,284
Environmental $100,000
Utility Coordination $30,000
Mobilization $598,947
Total OTHER COSTS $2,718,839
ROUNDED TOTAL $10,431,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Camino Diablo Widening (Vasco to Byron)\Cost Estimate Rev (2007-
05-02)
Improvement Work Elements Amount Unit Unit Cost Total Cost
Knightsen Ave/Delta Rd
Install Traffic Signal Install Traffic Signal 4 Inter Approaches $90,000.00 $360,000
Mobilization 1 LS $20,000.00 $20,000
Construction Area Signs 1 LS $2,000.00 $2,000
Construct NB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing NB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct SB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Sidewalk 1400 SF $5.00 $7,000
Curb and Gutter 100 LF $12.00 $1,200
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing SB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct EB LT Lane Surveying 100 LF $2.00 $200
(100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing EB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct WB LT Lane Surveying 100 LF $2.00 $200
(100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing WB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Add Crosswalks - All Legs Stripe West Leg 100 LF $6.60 $660
Stripe East Leg 100 LF $6.60 $660
Stripe South Leg 100 LF $6.60 $660
Stripe North Leg 100 LF $6.60 $660
Railroad Grade Crossing 1 LS $200,000 $200,000
C.3 Improvements Clean Water Treatment, etc…1 LS $173,310
Construction Total $866,550
Other Costs
Prelim Engineering (15%)1 LS $129,983
Const Engineering (15%)1 LS $129,983
R/W Engineering 1 LS $30,000
Real Property 1 LS $60,000
R/W Acquisition 9600 SF $5.00 $48,000
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Negotiation of Railroad Agreement 1 LS $20,000
Contingency 1 LS $249,133
$1,593,648
Contra Costa County Intersection Area of Benefit Cost Estimates
Intersection Total
Transportation Engineering Planning Cost Estimate
Contra Costa County Department of Public Works
Project Name:Byron Highway - Camino Diablo Traffic Signal and Left Turn Lanes
Project Location:At the intersection of Camino Diablo and Byron Highway Intersection
Project Length:Camino Diable: 1,300 Feet Assume R=5 and TI=8; AB=1.2 and AC=0.55
Byron Highway: 1,250 feet Assume R=5 and TI=10; AB=1.75 and AC=0.6
Date of Estimate:Apr. 2, 2007 Revision No.
Revision Date
Prepared by:Jason Chen
No.Description Quantity Units Unit Cost Total
1 Traffic Control 1 LS 20,000.00$ 20,000$
2 Construction Area Signs 6 EA 550.00$ 3,300$
3 Clear and Grubbing 1 LS 20,000.00$ 20,000$
4 Tree Removal 13 EA 1,000.00$ 13,000$
5 Earthwork 2222 CY 45.00$ 100,000$
6 Sawcut 2550 LF 3.00$ 7,650$
7 Excavation 4046 CY 55.00$ 222,525$
8 Aggregate Base 5201 CY 45.00$ 234,062$
9 Asphalt Concrete 1999 CY 100.00$ 199,852$
10 Guardrail 300 LF 50.00$ 15,000$
11 Extend/Modify Concrete Headwall 2 EA 3,000.00$ 6,000$
12 Modify Existing Inlets 3 EA 3,500.00$ 10,500$
13 Modify Existing Pipe 21"RCP 30 LF 165.00$ 4,950$
14 Other Misc Drainage Pipe Modifications 1 LS 20,000.00$ 20,000$
15 Grassy Swale (C.3 mitigation)8230 SF 15.00$ 123,450$
16 Striping 10569 LF 3.00$ 31,707$
17 Pavement Marking 789 SF 10.00$ 7,890$
18 Signage 1 LS 5,000.00$ 5,000$
19 Railroad crossing 1 LS 300,000.00$ 300,000$
20 Traffic Signal 1 LS 400,000.00$ 400,000$
21 Relocate Fence (6 Foot Wood Fence)100 LF 40.00$ 4,000$
22 Concrete Island 100 SF 20.00$ 2,000$
23 Curb 70 LF 50.00$ 3,500$
OTHER COSTS:Preliminary Engineering (15%)$263,158 SUBTOTAL 1,754,386$
Construction Engineering $263,158 OTHER COSTS $1,239,879
RW Engineering $40,000.00 SUBTOTAL $2,994,265
Real Property $60,000.00 CONTINGENCY*$504,386
R/W Acquisition $308,125.00 TOTAL $3,498,651
Mobilization $175,439
Utility Coordination $30,000
Environmental $100,000
Total OTHER COSTS $1,239,879
ROUNDED TOTAL $3,499,000
* CONTINGENCY is 25% of (SUBTOTAL plus Construction Engineering)
Click here if this project is a surface treatment or overlay project.
Click here if the project schedule for this project is to be 50 days or more; also click here if this is a bridge project.
G:\TransEng\AOB\East County Regional AOB\Update Process\AOB update\Byron Highway & Camino Diablo Intersection
Improvements Project\Cost Estimate (2007-04-02)
Improvement W ork Elements Amount Unit Unit Cost Total Cost
Byron Highway/Point of Timber
Install Traffic Signal Install Traffic Signal 3 Inter Approaches $90,000.00 $270,000
Mobilization 1 LS $15,000.00 $15,000
Construction Area Signs 1 LS $1,500.00 $1,500
Interconnect and Connect 1 LS $30,000 $30,000
Restripe existing NB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing SB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing EB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing W B Lane Lane Restriping 100 SF $8.00 $800
Removal Signs 4 EA $50.00 $200
Remove Conflicting Markings 100 $8.00 $800
Add Crosswalks - All Legs Stripe W est Leg 120 LF $6.60 $792
Stripe East Leg 120 LF $6.60 $792
Stripe South Leg 72 LF $6.60 $475
Construct SB LT Lane on SR4 Surveying 600 LF $2.00 $1,200
(Assume 600 ft storage length)Clearing and Grubbing 7200 SF $0.50 $3,600
Earthwork 7200 SF $2.00 $14,400
Roadway Construction 7200 SF $6.00 $43,200
Storm Drain 600 LF $100.00 $60,000
Landscape and Irrigation 7200 SF $1.00 $7,200
Restripe existing SB into LT Lane Lane Restriping 1200 SF $8.00 $9,600
Construct NB RT Lane on SR4 Surveying 650 LF $2.00 $1,300
(Assume 650 ft storage length)Clearing and Grubbing 7800 SF $0.50 $3,900
Earthwork 7800 SF $2.00 $15,600
Roadway Construction 7800 SF $6.00 $46,800
Storm Drain 650 LF $100.00 $65,000
Landscape and Irrigation 7800 SF $1.00 $7,800
Restripe existing NB into RT Lane Lane Restriping 1300 SF $8.00 $10,400
W iden SB Departure Surveying 1080 LF $2.00 $2,160
(1080 Feet)Clearing and Grubbing 12960 SF $0.50 $6,480
Earthwork 12960 SF $2.00 $25,920
Roadway Construction 12960 SF $6.00 $77,760
Storm Drain 1080 LF $100.00 $108,000
Landscape and Irrigation 12960 SF $1.00 $12,960
Lane Restriping 2160 SF $8.00 $17,280
W iden NB Departure Surveying 1080 LF $2.00 $2,160
(1080 Feet)Clearing and Grubbing 12960 SF $0.50 $6,480
Earthwork 12960 SF $2.00 $25,920
Roadway Construction 12960 SF $6.00 $77,760
Storm Drain 1080 LF $100.00 $108,000
Landscape and Irrigation 12960 SF $1.00 $12,960
Lane Restriping 2160 SF $8.00 $17,280
C.3 Improvements Clean W ater Treatment, etc…1 LS $278,470
$1,392,349
Other Costs
Prelim Engineering (15%)1 LS $208,852
Const Engineering (15%)1 LS $208,852
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Contingency 1 LS $400,300
$2,270,354
Contra Costa County Intersection Area of Benefit Cost Estimates
Construction Total
Intersection Total
Improvement Work Elements Amount Unit Unit Cost Total Cost
Sellers Ave/Marsh Creek Rd
Install Traffic Signal Install Traffic Signal 3 Inter Approaches $90,000.00 $270,000
Mobilization 1 LS $15,000.00 $15,000
Construction Area Signs 1 LS $1,500.00 $1,500
Restripe existing NB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing SB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing EB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing WB Lane Lane Restriping 100 SF $8.00 $800
Removal Signs 4 EA $50.00 $200
Remove Conflicting Markings 100 $8.00 $800
Add Crosswalks - All Legs Stripe West Leg 120 LF $6.60 $792
Stripe East Leg 120 LF $6.60 $792
Stripe South Leg 72 LF $6.60 $475
C.3 Improvements Clean Water Treatment, etc…1 LS $73,190
$365,949
Other Costs
Prelim Engineering (15%)1 LS $70,000
Const Engineering (15%)1 LS $54,892
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Contingency 1 LS $105,210
$656,052
Contra Costa County Intersection Area of Benefit Cost Estimates
Construction Total
Intersection Total
Improvement Work Elements Amount Unit Unit Cost Total Cost
Balfour Rd/Byron Highway
Install Traffic Signal Install Traffic Signal 4 Inter Approaches $90,000.00 $360,000
Mobilization 1 LS $15,000.00 $15,000
Construction Area Signs 1 LS $1,500.00 $1,500
Restripe existing NB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing SB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing EB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing WB Lane Lane Restriping 100 SF $8.00 $800
Removal Signs 4 EA $50.00 $200
Remove Conflicting Markings 100 $8.00 $800
Add Crosswalks - All Legs Stripe West Leg 120 LF $6.60 $792
Stripe East Leg 120 LF $6.60 $792
Stripe South Leg 72 LF $6.60 $475
Construct NB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing NB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct SB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing SB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct EB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing EB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct WB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing WB into LT Lane Lane Restriping 200 SF $8.00 $1,600
C.3 Improvements Clean Water Treatment, etc…1 LS $120,790
$603,949
Other Costs
Prelim Engineering (15%)1 LS $90,592
Const Engineering (15%)1 LS $90,592
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Contingency 1 LS $173,635
$1,018,769
Contra Costa County Intersection Area of Benefit Cost Estimates
Construction Total
Intersection Total
Improvement Work Elements Amount Unit Unit Cost Total Cost
Sellers Ave/Sunset Rd
Install Traffic Signal Install Traffic Signal 4 Inter Approaches $90,000.00 $360,000
Mobilization 1 LS $20,000.00 $20,000
Construction Area Signs 1 LS $2,000.00 $2,000
Construct NB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing NB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct SB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing SB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct EB LT Lane Surveying 100 LF $2.00 $200
(100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing EB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct WB LT Lane Surveying 100 LF $2.00 $200
(100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing WB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Add Crosswalks - All Legs Stripe West Leg 100 LF $6.60 $660
Stripe East Leg 100 LF $6.60 $660
Stripe South Leg 100 LF $6.60 $660
Stripe North Leg 100 LF $6.60 $660
C.3 Improvements Clean Water Treatment, etc…1 LS $121,260
$606,300
Other Costs
Prelim Engineering (15%)1 LS $90,945
Const Engineering (15%)1 LS $90,945
R/W Engineering 1 LS $15,000
Real Property 1 LS $60,000
R/W Acquisition 9600 SF $5.00 $48,000
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Contingency 1 LS $174,311
$1,145,501
Contra Costa County Intersection Area of Benefit Cost Estimates
Construction Total
Intersection Total
Improvement Work Elements Amount Unit Unit Cost Total Cost
Sellers Ave/Chestnut Ave
Install Traffic Signal Install Traffic Signal 4 Inter Approaches $90,000.00 $360,000
Mobilization 1 LS $20,000.00 $20,000
Construction Area Signs 1 LS $2,000.00 $2,000
Construct NB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing NB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct SB LT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Sidewalk 1400 SF $5.00 $7,000
Curb and Gutter 100 LF $12.00 $1,200
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing SB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct EB LT Lane Surveying 100 LF $2.00 $200
(100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing EB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Construct WB LT Lane Surveying 100 LF $2.00 $200
(100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Curb and Gutter 100 LF $12.00 $1,200
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing WB into LT Lane Lane Restriping 200 SF $8.00 $1,600
Add Crosswalks - All Legs Stripe West Leg 100 LF $6.60 $660
Stripe East Leg 100 LF $6.60 $660
Stripe South Leg 100 LF $6.60 $660
Stripe North Leg 100 LF $6.60 $660
C.3 Improvements Clean Water Treatment, etc…1 LS $123,610
$618,050
Other Costs
Prelim Engineering (15%)1 LS $92,708
Const Engineering (15%)1 LS $92,708
R/W Engineering 1 LS $30,000
Real Property 1 LS $60,000
R/W Acquisition 9600 SF $5.00 $48,000
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Contingency 1 LS $177,689
$1,179,154
Contra Costa County Intersection Area of Benefit Cost Estimates
Construction Total
Intersection Total
Improvement Work Elements Amount Unit Unit Cost Total Cost
Sellers Ave/Balfour Rd
Install Traffic Signal Install Traffic Signal 4 Inter Approaches $90,000.00 $360,000
Mobilization 1 LS $20,000.00 $20,000
Construction Area Signs 1 LS $2,000.00 $2,000
Restripe existing NB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing SB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing EB Lane Lane Restriping 100 SF $8.00 $800
Restripe existing WB Lane Lane Restriping 100 SF $8.00 $800
Removal Signs 4 EA $50.00 $200
Remove Conflicting Markings 100 $8.00 $800
Add Crosswalks - All Legs Stripe West Leg 120 LF $6.60 $792
Stripe East Leg 120 LF $6.60 $792
Stripe South Leg 72 LF $6.60 $475
Construct NB RT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing NB into RT Lane Lane Restriping 200 SF $8.00 $1,600
Construct SB RT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing SB into RT Lane Lane Restriping 200 SF $8.00 $1,600
Construct EB RT Lane Surveying 100 LF $2.00 $200
(Assume 100 ft storage length)Clearing and Grubbing 1400 SF $0.50 $700
Earthwork 1400 SF $2.00 $2,800
Roadway Construction 1400 SF $6.00 $8,400
Storm Drain 100 LF $100.00 $10,000
Landscape and Irrigation 1400 SF $1.00 $1,400
Restripe existing EB into RT Lane Lane Restriping 200 SF $8.00 $1,600
C.3 Improvements Clean Water Treatment, etc…1 LS $115,890
$579,449
Other Costs
Prelim Engineering (15%)1 LS $86,917
Const Engineering (15%)1 LS $86,917
Environmental 1 LS $40,000
Utility Coordination 1 LS $20,000
Contingency 1 LS $166,592
$979,875
Contra Costa County Intersection Area of Benefit Cost Estimates
Construction Total
Intersection Total
Appendix B
List of Traffic Analysis Zones (TAZs) in
East County Regional AOB
East County Regional Area of Benefit
Transportation Mitigation Fee Update
Contra Costa County
Prepared for:
Contra Costa County
October 2012
WC05-2185B
TAZ’S FROM THE CCTA TRAVEL DEMAND MODEL INCLUDED IN THE EAST COUNTY REGIONAL
AREA OF BENEFIT
20255 30316 30415
20256 30362 30416
20259 30363 30417
20260 30372 30418
30012 30373 30419
30034 30374 30420
30035 30375 30421
30037 30376 30422
30074 30377 30423
30075 30378 30424
30089 30379 30425
30115 30380 30426
30180 30381 30427
30307 30382 30428
30308 30405 30602
30309 30406 30606
30310 30407 30672
30311 30408 30680
30312 30409 40231
30313 30410 40251
30314 30411 40258
30315 30412 40259
Appendix C
Project Traffic Proportions
East County Regional Area of Benefit
Transportation Mitigation Fee Update
Contra Costa County
Prepared for:
Contra Costa County
October 2012
WC05-2185B
PROJECT TRAFFIC PROPORTIONS
Project # Name Description
Traffic Proportions1
ECAOB Other East
County
Outside
East
County
1
Vasco Road / Camino
Diablo Intersection
Improvements
Install an exclusive right turn lane on
northbound Vasco Road, dual left turn lanes on
westbound Camino Diablo, dual right turn lanes
on eastbound Camino Diablo, and lengthen the
4-lane section on Vasco Road near the
intersection to provide more room for merging.
11% 35% 54%
2 Marsh Creek Road
Improvements
Various roadway and intersection
improvements along Marsh Creek Road. 18% 24% 58%
3
Chestnut Street
Widening (Sellers
Ave to Byron Hwy.)
Widen roadway to County standard 78% 14% 8%
4
Delta Road Widening
(Byron Hwy. to Holland
Tract Road)
Widen roadway to County standard 100% 0% 0%
5
Knightsen Ave/Eden
Plains Rd Widening
(Delta Road to
Chestnut Street)
Widen roadway to County standard 66% 22% 12%
6
Sunset Road Widening
(Sellers Ave to Byron
Hwy.)
Widen roadway to County standard 81% 12% 7%
7
Byron Hwy. Widening
(Camino Diablo to the
Alameda County line)
Widen roadway to County standard 9% 32% 59%
8
Byron Highway Two
Way Left Turn Lane at
Byron Elementary
School
Widen the existing pavement to accommodate
a two way left turn lane along the frontage of
the school district and Byron Elementary
School.
20% 32% 48%
9
SR4/Byron Highway
South Intersection
Widening (Phase 2)
Widen the existing pavement to provide two
lanes in each direction along SR4 15% 44% 40%
10
Knightsen Ave
Widening (East
Cypress Road to Delta
Road)
Widen roadway to County standard 28% 60% 12%
11
Delta Road Widening
(Sellers Ave to Byron
Hwy.)
Widen roadway to County standard 30% 61% 9%
12
Sellers Ave Widening
(Delta Road to
Chestnut Street)
Widen roadway to County standard 24% 62% 14%
13
Sellers Ave Widening
(Main Canal to Marsh
Creek)
Widen roadway to County standard 60% 30% 10%
14a
Byron Highway
Widening (Delta
Road to Chestnut Ave)
Widen roadway to County standard 56% 27% 16%
PROJECT TRAFFIC PROPORTIONS
Project # Name Description
Traffic Proportions1
ECAOB Other East
County
Outside
East
County
14b
Byron Highway
Widening
(Chestnut Ave to SR 4)
Widen roadway to County standard 62% 24% 14%
14c
Byron Highway
Widening (SR 4 to
Camino Diablo)
Widen roadway to County standard 20% 39% 41%
15
Camino Diablo
Widening (Vasco
Road to Byron Hwy.)
Widen roadway to County standard 11% 28% 61%
16
Knightsen Ave / Delta
Road Intersection
Improvements
Signalize intersection and provide an exclusive
left turn lane at all four approaches 37% 53% 10%
17
Byron Highway /
Camino Diablo
Intersection
Improvements
Install traffic signal and construct railroad
crossing. 14% 29% 57%
18
Byron Highway / SR4 /
Point of Timber
Intersection
Improvements
Install traffic signal, coordinate with nearby
signal at SR4 and Byron Highway. On SR4,
install exclusive left-turn lane at eastbound
approach and exclusive right-turn lane at
westbound approach.
62% 25% 13%
19
Sellers Ave / Marsh
Creek Road
Intersection
Improvements
Install traffic signal. 24% 42% 34%
20
Balfour Road / Byron
Highway Intersection
Improvements
Install traffic signal and exclusive left-turn lane
at all four intersection approaches. 77% 15% 8%
21
Sellers Ave / Sunset
Road Intersection
Improvements
Install traffic signal and exclusive left-turn lane
at all four intersection approaches. 34% 53% 12%
22
Sellers Ave / Chestnut
St Intersection
Improvements
Install traffic signal and exclusive left-turn lane
at all four intersection approaches. 35% 53% 12%
23
Sellers Ave / Balfour
Road Intersection
Improvements
Install traffic signal and exclusive left-turn lane
at all four intersection approaches. 43% 46% 11%
Notes:
1 For each improvement project, the CCTA traffic model was used to determine the origins and destinations of traffic using the
affected intersection or roadway segment. Trips with either an origin or a destination in the East County Regional AOB are
assigned to the East County Regional AOB. Trips which neither start nor end in the East County Regional AOB are split into
two, and half of the trip is assigned to the origin location and half to the destination location.