HomeMy WebLinkAboutMINUTES - 03231993 - 1.1 (2) TO: BOARD OF SUPERVISORS
FROM: J. MICHAEL WALFORD, PUBLIC WORKS DIRECTOR
DATE: March 23, 1993
SUBJECT: Addendum to the Final Environmental Impact Report to the State Route 4/13ailey Road
Interchange Project
Project No.: 4660-6X4156
SPECIFIC REQUEST(S) OR RECOMMENDATION(S) &BACKGROUND AND JUSTIFICATION
I. Recommended Action:
APPROVE the Addendum to the Final Environmental Impact Report (FEIR), State Clearing House
No. 91063034 (County Project #90-6), for the State Route 4/13ailey Road Interchange Project.
II. Financial Impact:
There will be no impact to the County General Fund.
III. Reasons for Recommendations and Background:
As a result of the final design, minor technical changes in the project description have occurred.
This level of design detail was not available prior to certification of the FOR for the project.
The County has determined that an Addendum to the Bailey Road FEIR, pursuant to CEQA
Section 15164, is the appropriate document to address the minor technical changes in the
project description. These changes are described in detail in Chapter 3 of the (attached)
Addendum. Upon County approval,this Addendum would be attached to the FEIR for the State
Route 4/13ailey Road Interchange Project.
IV. Consequences of Negative Action:
Without approval of the addendum the project construction would be delayed.
Continued on Attachment: x SIGNATURE:
_ RECOMMENDATION OF COUNTY ADMINISTRATOR
_ RECOMMENDATION OF BOARD COMMITTEE
APPROVE OTHER
SIGNATURE(S):
ACTION OF BOARD ON MAR 2 3 1993 APPROVED AS RECOMMENDED _OTHER
VOTE OF SUPERVISORS
_ UNANIMOUS (ABSENT )
AYES: NOES:
ABSENT: ABSTAIN:
I hereby certify that this Is a true and correct copy of
an action taken and entered on the minutes of the
RVF:p
Board of Supervisors on the date shown.
a
G��"•111 Uri' ��
c:SR4-Ba 23.t3 ATTESTED
PHIL BATCHELOR,Clerk of the Board
Contact: R. Faraone (3132252) of Supervisors and County Adinini--trator
Orig. Div: Public Works(TE)
cc: M.Shiu, Deputy PW Director
V.Germany, Design
P. Maxwell,OCTA y
C.Spangler, Caltrans
T a
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ADDENDUM
to the
FINAL
ENVIRONMENTAL IMPACT REPORT
on the
STATE. ROUTE 4IBAILEY ROAD
INTERCHANGE IMPROVEMENT PROJECT
SCH #91063034
CP #90-6
MARCH 1993
_ 4
SrA,COU��
Prepared For:
CONTRA COSTA COUNTY
Prepared By:
PUBLIC AFFAIRS MANAGEMENT
ADDENDUM
to the
FINAL
ENVIRONMENTAL IMPACT REPORT
on the
STATE ROUTE 4/13AILEY ROAD
INTERCHANGE IMPROVEMENT PROJECT
MARCH 1993
SCH #91063034
CP #90-6
Vickie Germany Dennis Barry
Environmental Planner Deputy Director
Public Works Department Community Development Department
Da te: 9% -!U Date: '3- Is'-9-5
Prepared For:
CONTRA COSTA COUNTY
Department of Public Works
255 Glacier Drive
Martinez, California 94553
Prepared By:
PUBLIC AFFAIRS MANAGEMENT
101 The Embarcadero, Suite 210
San Francisco, California 94105
f '
ADDENDUM
to the
FINAL
ENVIRONMENTAL IMPACT REPORT
for the
STATE ROUTE 4/BAILEY ROAD INTERCHANGE IMPROVEMENT PROJECT
TABLE OF CONTENTS
Chapter Page
1. INTRODUCTION 1
2. ORIGINAL PROJECT DESCRIPTION 3
3. CHANGES TO THE ORIGINAL PROJECT DESCRIPTION 18
4. ENVIRONMENTAL IMPLICATIONS 28
5. CONCLUSION 36
6. REPORT PREPARERS 37
LIST OF FIGURES
Figure Page
2.1-1 Regional Location 4
2.1-2 Location of the Project Site 5
2.3-1 Project Layout 7
2.3-2 Western Most End of Proposed Project Improvements 8
2.3-3 Proposed Project Improvements.in the Vicinity of Bailey Road 9
2.3-4 Proposed Project Improvements East of Bailey Road 10
2.3-5 Eastern Most End of the Proposed Project Improvements 11
2.3-6 Location of the Hill Street Treatment Plant 14
3.1 Location of the BART Interim Park and Ride Lot 20
3.2 Location of Wetland Mitigation Site 23
1. INTRODUCTION
The County of Contra Costa certified an Environmental Impact Report (EIR) for
the State Route 4/Bailey Road Interchange Improvement Project in September 1991 (State
Clearinghouse #91063034 and County (#90-6). However, minor technical changes in the
project description have occurred as a result of the final design phase of the project.
This level of design detail was not available prior to certification of the Final EIR for the
project.
When an Environmental Impact Report has already been prepared, the California
Environmental Quality Act (CEQA) Guidelines identify several possible options for
addressing new information or changes to a project description. These options include
either a "Subsequent", "Supplement" or "Addendum" to an EIR.
Subsequent EIR
Section 15162 of the CEQA Guidelines indicates that after an EIR has been
prepared, a Subsequent EIR is only required when 1) substantial changes are proposed
in the project which will require revisions to the EIR due to new significant impacts not
considered; or 2) substantial changes have occurred with respect to the circumstances
under which the project is undertaken; or 3) new information of substantial importance
becomes available. if these circumstances apply, a Subsequent EIR should be prepared.
Supplement to an EIR
Section 15163 of the CEQA Guidelines addresses the options for Supplemental
EMs. The Lead Agency may choose to prepare a Supplement to an EIR rather than a
Subsequent EIR if any of the conditions described in Section 15162 would require a
Subsequent EIR and if only minor additions or changes are necessary to make the
previous EIR adequate.
Addendum to an EIR
Section 15164 of the CEQA Guidelines discusses the conditions under which an
Addendum to a previously prepared EIR is appropriate. The Lead Agency should
prepare an Addendum to an EIR if: 1) none of the conditions described in Section 15162
calling for a Subsequent EIR have occurred; 2) only minor technical changes or additions
are necessary to make the EIR under consideration adequate under CEQA; and 3) the
changes to the EIR made by the Addendum do not raise important new issues about the
significant effects on the environment. Unlike Subsequent or Supplemental EIR's, an
Addendum does not need to be formally recirculated for public comment pursuant to
CEQA procedures. However, the Addendum is made part of the public record for the
proposed project and is attached to the Final EIR.
1
T T
The County of Contra Costa has determined that an Addendum to the Bailey
Road EIR, pursuant to CEQA Section 15164, is the appropriate document to address the
minor technical changes in the project description. The minor technical changes to the
project description are described in detail in the Chapter 3 of this Addendum. Upon
County approval, this Addendum would be attached to the Final EIR for the Bailey Road
Project.
2
2. ORIGINAL PROJECT DESCRIPTION
The following text is.the original project description that appeared in the Draft
and Final EIRs for the State Route 4/Bailey Road Interchange Improvement Project. The
minor technical changes to the project description, which are the focus of this
Addendum, are described in detail in Chapter 3 of this report.
2.1 PROJECT LOCATION
The State Route 4/Bailey Road Interchange project involves reconstruction of the
existing freeway interchange, improvement to a segment of State Route 4 and various
modifications to local roadways. The Bailey Road interchange is located in the north-
eastern portion of Contra Costa County within the boundaries of the City of Pittsburg
and the unincorporated area of West Pittsburg (See Figure 2.1-1). The Bailey Road
interchange is located approximately three miles east of the State Route 4/Willow Pass
interchange and three miles west of the State Route 4/Railroad Avenue interchange.
The project area includes the existing on and off-ramps for State Route 4 at the
Bailey Road interchange, Bailey Road from Canal Road north to West Leland Road to
the south and State Route 4 from approximately 2,400 feet west of Bailey Road to 3,500
.feet east of Bailey Road. Figure 2.1-2 depicts the general boundaries of the project area.
2.2 PROTECT OBJECTIVES/NEED FOR THE PROJECT
Over the last decade Contra Costa County has experienced a significant increase
in residential and commercial development. A substantial amount of this growth is
occurring in the State Route 4 corridor resulting in increased traffic volumes and
congestion, particularly during the peak commute periods. As development occurs and
plans to extend BART to east Contra Costa County are implemented, the Bailey Road
interchange is expected to experience a significant increase in peak period traffic. In
addition to this area-wide traffic, the City of Pittsburg has projected considerable
residential and commercial growth for the vicinity of the Bailey Road interchange. These
projected increases in traffic and the installation of the regional transit terminal station
demonstrates the need for additional capacity at the State Route 4/Bailey Road
interchange and the need for local street modifications in the vicinity.
The objective of the proposed project is to reconstruct the State Route 4/Bailey
Road Interchange to accommodate the circulation and transportation needs resulting
from existing and planned development in this portion of Contra Costa County and to
accommodate the extension of BART to Bailey Road and the resulting increase in traffic
associated with a BART terminal station at Bailey Road. With this in mind, the proposed
interchange and associated roadway improvements have been designed, or sized, to
accommodate the traffic needs of both a BART terminal station at Bailey Road, and
planned development in this area.
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BAILEY ROAD LOCATION OF THE PROJECT SITE
INTERCHANGE
IIPROVEPENT PROJECT
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2.3 PROJECT DESCRIPTION
The proposed project includes: the demolition of certain existing facilities;
modifications to the State Route 4/Bailey Road interchange and local streets;
modifications for pedestrian access; drainage improvements; and, the relocation of
affected utilities. Figures 2.3-1 through 2.3-5 depict the proposed layout and local
roadway improvement proposed by the project. Figure 2.3-1 depicts the general layout
of the project. Figure 2.3-2 depicts the western most end of the proposed project
improvements where they would transition into the widened State Route 4 as proposed
by the Willow Pass Grade Lowering project (See Section 2.4). Figure 2.3-3 depicts the
layout of the interchange on and off-ramps, local access along Bailey Road and Leland
Road, as well as the proposed access to the BART parking lot. Figure 2.3-4 shows
proposed improvements east of Bailey Road in the vicinity of Ambrose Park, Memorial
Way,and Bel Air elementary school. Figure 2.3-5 exhibits the proposed project's eastern
most end where the project would transition back into the existing alignment of State
Route 4.
INTERCHANGE MODIFICATIONS
-The proposed interchange modifications include:
• Reconstruction of State Route 4 from the Willow Pass Grade Lowering Project
limits west of Bailey Road to approximately 3,500 feet east of Bailey Road with
a 104 foot median sufficient to accommodate the BART station and BART tracks,
and six through lanes and two High Occupancy Vehicle (HOV) lanes west of
Bailey Road transitioning to four lanes east of Bailey Road with provisions for a
future eight lane facility.
• Demolition of the existing Bailey Road Interchange Ramps and construction of
new interchange ramps in a reverse partial cloverleaf design which consists of
loop off-ramps and diagonal on-ramps (See Figure 2.3-3).
LOCAL CIRCULATION MODIFICATIONS
The proposed local circulation modifications include:
• Widening of Bailey Road to six through lanes between 100 feet north of Maylard
Street to the existing Canal Road intersection including dual left turn lanes in the
vicinity of the interchange.
• Installation of a right turn lane on northbound Bailey Road onto the eastbound
State Route 4 on-ramp.
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• Installation of a right turn lane on southbound Bailey Road onto the State Route
4 westbound on-ramp.
• Relocation of Canal Road west of Bailey Road to the intersection of Mims Avenue
and Bailey Road. This alignment would follow Amberson and Mims Avenues
and requires residential relocation.
• Replacement of the existing Memorial Way access to Ambrose Park with a new
road which would parallel the diagonal eastbound State Route 4 on-ramp.
• Extension of Los Palos Drive to provide access to the residential land east of
Ambrose Park (access to this area would be cut off as a result of the widening of
State Route 4).
• Installation of a right turn lane from westbound Leland Road to northbound
Bailey Road.
• Installation of signals and related improvements at off-ramp intersections with
Bailey Road and at Canal Road/Bailey Road. Modification to the existing signal
at Bailey Road/Leland Road.
• Providing access to the BART parking lot off Bailey Road near the existing access
to the BART park and ride lot. This access point would be parallel to and at
grade with the State Route 4 eastbound off-ramp. This entrance/exit point would
be restricted to ingress from southbound Bailey Road. Egress from this point
would be restricted to northbound Bailey Road and the State Route 4 eastbound
on-ramp (See Figure 2.3-2).
• Provide access to and from the proposed BART parking lot via Leland Road.
PEDESTRIAN ACCESS MODIFICATIONS
The proposed pedestrian modifications include:
• Installation of twelve foot wide sidewalks along the west side of Bailey Road from
the westbound on ramp/Canal Road intersection to the eastbound off-
ramp/BART entrance; and six foot sidewalks on the east side of Canal Road
south to the eastbound on-ramp.
• Installation of pedestrian push buttons at the Bailey Road westbound on-ramp
intersection, at the entrance to the BART parking lot on Bailey Road, at the Bailey
Road eastbound on- ramp, and at the relocated Canal Road intersection on Bailey
Road.
12
Installation of a crossing under the westbound loop off-ramp, thus bypassing the
free right turn created for southbound Bailey Road traffic.
• Installation of a new pedestrian walkway from the Bailey Road/eastbound on-
ramp intersection will continue through Ambrose Park and cross the Contra Costa
Canal.
The pedestrian improvements listed above are designed to be part of the Delta-
De Anza Regional Trail.
OTHER ACTIVITIES AND MODIFICATIONS
Other proposed activities include:
• Relocation of electrical power lines along a portion•of Bailey Road and in the
northwest quadrant of the project area.
• Relocation of various utilities such as water, sewer and natural gas service lines
as needed to accommodate the proposed project improvements.
• Installation of drainage facilities in the area of the planned BART parking lot and
station. A 42 inch diameter storm drain would be installed under the BART
parking lot to connect to the existing 36 inch diameter storm drain under State
Route 4.
EXPANSION OF THE HILL STREET TREATMENT PLANT
Expansion of the Hill Street Treatment Plant is proposed as part of the Bailey
Road Interchange Improvement Project to accommodate the water service requirements
provided by the Madison Treatment Plant which would be removed by the project. The
Hill Street Treatment Plant is located on Hill Street near its intersection with Alberts
Avenue in unincorporated West Pittsburg. Figure 2.3-6 depicts the location of the Hill
Street Treatment Plant.
Expansion of the Hill Street Water Treatment Plant, which is owned by the
Southern California Water Company (the parent company of California Cities Water),
would result in upgrading the existing 3,000 gallons per minute (gpm) capacity to
approximately 4,500 gpm. This 1,500 gpm increase in treatment and supply capacity
would be equivalent to the water supply provided by the Madison Treatment Plant prior
to removal. To accommodate the expansion of the Hill Street Plant, five privately owned
parcels would need to be acquired. The expansion would require demolition of five
single family homes and new construction including:
13
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` EXISTING HILL STREET TREATMENT PLANT
NEW LANE) REQUIRED FOR HILL STREET TREATMENT
PLANT EXPANSION
STATE ROUTE 4/ FIGURE 2.3-6
BAILEY ROAD LOCATION OF THE HILL STREET TREATMENT
INTERCHANGE PROJECT PST
14
• A new raw water booster pump station;
• One new concrete ozone contactor;
• One new sedimentation basin;
• Two new 8-foot diameter by 40-foot long horizontal pressure filters;
• Two new 10-foot diameter by 10-foot high vertical granular activated carbon
(GAC) contactors;
• Modification to the existing laboratory building including improvements to the
laboratory room, bathroom, and electrical room;
• A new chemical building including a chlorine room, chemical feed room, and
ozone generation room;
• A sludge detention basin;
• Distribution system improvements required to accommodate the removal of the
Madison Treatment Plant.
The land acquisition and proposed facilities would ultimately allow for future
installation of an ozone contactor, additional pressure filters, additional carbon
contactors. No schedule has been developed for installation of these facilities at this
time.
Relocation of the Madison Treatment Plant was not planned prior to the
determination that the Madison Treatment Plant would be displaced by the State Route
4/13ailey Road interchange improvement project and the proposed facilities are not
directly related to other infrastructure improvements planned by California Cities Water.
Potential environmental impacts associated with expanding the Hill Street
Treatment Plant are analyzed in Chapter 3 of the Draft EIR. Refer to the following
sections of the Draft EIR: 3.1 Land Use, 3.3 Noise, 3.4 Air Quality, 3.9 Hazardous
Materials, 3.10 Visual Quality, and 3.11 Cultural Resources.
15
2.4 RELATIONSHIP OF PROPOSED PROTECT WITH OTHER IMPROVEMENTS
PLANNED FOR STATE ROUTE 4
BAY AREA RAPID TRANSIT EXTENSION PLANS
The Bay Area Rapid Transit District (BART) has approved an extension of the
existing Concord line to West Pittsburg. This extension will follow the Port Chicago
Highway from the existing BART Concord Station to State Route 4. The BART line will
then turn east and follow State Route 4 over Willow Pass Grade and along State Route
4 to the Bailey Road site. An intermediate station will be located at the North
Concord/Martinez park and ride lot.
The approved plans include: construction of a BART station in the State Route 4
median just west of Bailey road; replacement of the existing BART park and ride lot and
adjacent property owned by BART with a parking lot with 1,970 spaces; installment of
tracks approximately 3,500 feet east of the Bailey Road Interchange; and related
improvements. This extension is one component of BART's more long range
improvement plans.
WILLOW PASS GRADE LOWERING PROJECT
An Alternative Analysis/Environmental Impact Report (AA/EIS) for the
Pittsburg/Antioch Corridor was prepared in November of 1988 by the Bay Area Rapid
Transit District in adopting the corridor for the extension of BART to Antioch. An
Environmental Reevaluation was prepared for the State Route 4/Willow Pass Grade
Lowering and Widening project in 1990 by Caltrans. A Subsequent EIR to the Caltrans
Environmental Reevaluation has been prepared for the widening and lowering of State
Route 4 from Willow Pass Road in Concord to Bailey Road in Pittsburg as described
above. This Subsequent EIR, provides the environmental clearance for the widening and
lowering of State Route 4 necessary to accommodate the extension of BART along the
adopted alignment as far as the vicinity of the Bailey Road Interchange.
The proposed State Route 4/Bailey Road interchange modifications are designed
to compliment the widening and lowering of State Route 4 between Willow Pass Road
in Concord and Bailey Road in the Pittsburg and West Pittsburg area. The Willow Pass
Grade Lowering project consists of the following improvements:widening of State Route
4 to six through lanes with truck climbing lanes over Willow Pass; the provision of a
wide median to accommodate the extension of BART and two High Occupancy Vehicle
(HOV) lanes; and, the lowering of the Willow Pass summit to provide a highway grade
of 3.5 percent.
16
The State Route 4/Bailey Road Interchange modifications are designed to connect
into the six through lanes and the wide median planned to the west as a part of the
Willow Pass project. The two projects are designed to accommodate the approved
extension of BART service to the West Pittsburg/Bailey Road area.
2.5 CONFORMANCE WITH RELEVANT PLANS GOALS AND POLICIES
The proposed project is generally consistent with Caltrans' plans for State Route
4, BART's expansion plans to the Bailey Road area and General Plan policies adopted
by Contra Costa County and the City of Pittsburg. Details about these and other policy
consistency issues are presented in Sections 3.1 and 3.2 of the Draft EIR.
17
3. CHANGES TO THE ORIGINAL PROTECT DESCRIPTION
During the final design phase of the project, various aspects of the project design
were refined. These refinements constitute minor technical changes to the original
project description which was evaluated in the Draft and Final EIRs for the project. The
minor technical changes to the original project description are discussed in detail below.
Discussion of the environmental impacts associated with these minor changes is
contained in Chapter 4 of this Addendum.
LOCATION OF THE BART TRACTION POWER SUBSTATION
A BART traction power substation will be located between the SR 4 eastbound
lanes and the BART access drive from Bailey Road. Under the original project
description, this area was to be used for additional BART parking. The loss of this
parking area has been compensated by acquiring an additional 8 acres to the west of the
BART property behind the Oak Hills shopping center. The property to be acquired is
currently vacant.
ADDITIONAL RESIDENTIAL DISPLACEMENT
The project will result in the displacement of three additional residential units,not
identified in the Draft and Final EIRs. These units are located at the following
addresses:
471, 485 and 493 Wollam Avenue
These three residential properties are needed for construction of the eastbound
on-ramp and the relocation of Memorial Way. Any excess property that may result from
the acquisition and demolition of these three residences will be dedicated to the
Ambrose Park District to mitigate right-of-way impacts to Ambrose Park.
NEW BART MAINTENANCE ACCESS
A BART maintenance access has been provided under the westbound lanes of SR
4 to provide access to the BART tracks in the freeway median. The maintenance access
will be located along Canal Road, west of Be] Air Elementary School. The maintenance
access will be gated and restricted to BART personnel. This access was depicted in
Figure 2.3-4, "Proposed Project Improvements East of Bailey Road" in the Final EIR but
was not specifically evaluated in the Final EIR.
NEW ACCESS ROUTE TO PARCELS EAST OF AMBROSE PARK
The original project plans depict an extension of Los Palos Drive north of West
Leland Road across the Contra Costa Canal to provide access to three currently vacant
18
parcels located east of Ambrose Park. During the final design phase, alternative access
Mutes were evaluated. Due to the expense involved with constructing a new bridge
over the Contra Costa Canal, an alternative access to these properties has been
developed.
The property owner of the parcel at the eastern end of the project will be
provided with two options: (1) a 12-foot driveway, approximately 100 feet long would
be constructed from the existing western edge of Wedgewood Drive and a payment of
$35,000 will be made, or (2) a payment of $50,000 would be made and no road
constructed. The two parcels located immediately east of Ambrose Park (Seeno parcels)
will be purchased by the County, thus replacement access to the Seeno parcels would
not be required.
ADDITIONAL RIGHT-OF-WAY ACQUISITION - EASTERN END OF PROTECT
Additional right-of-way will be required at the eastern end of the project. In the
original project description,right-of-way acquisition tapered down to match the existing
right-of-way. The plans have been revised to include additional right-of-way up to the
eastern end of the project limits. The additional right-of-way is approximately 30 feet
wide and approximately 500 feet long (15,000 sq. ft.). The right-of-way to be acquired
is currently vacant.
In addition to the right-of-way described above, the County would also purchase
the two parcels immediately east of Ambrose Park (Seeno parcels).
RELOCATION OF BART PARK & RIDE LOT
The existing BART Park & Ride lot will be removed by the interchange
improvements and construction of the BART Bailey Road Station. However, during
construction and until the Bailey Road Station is completed, the Park & Ride lot will be
necessary for local residents. The original project description did not include the
designation of an interim Park & Ride facility. The project plans have been revised to
include an interim Park & Ride lot to be located along West Leland Road adjacent to the
west boundary of the Oak Hills shopping center (see Figure 3.1), or on the additional 8
acres to be acquired by the County to the west (see page 18: Location of the BART
Traction Power Substation). The interim Park & Ride facility will be located in an area
that is currently vacant. The lot will be constructed and operational before the existing
lot is demolished.
STAGED CONSTRUCTION AND TEMPORARY TRAFFIC ROUTING
The original project description did not include staged construction and
construction period traffic routing. The project description has been revised, as part of
the final design process, to include staged construction and construction period traffic
routing plans. In general, all construction south of existing SR 4 will be completed first.
19
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Eastbound Traffic Relocation
The eastbound off-ramp from SR 4 to Bailey Road will be relocated first during
construction. This off-ramp will be rerouted to West Leland Road, west of the Oak Hills
shopping center along the western boundary of the BART property. To accommodate
the additional traffic on West Leland Road, parking will be restricted along the north
side of West Leland Road along the shopping center frontage.
Westbound Traffic Relocation
Construction of improvements along the north side of SR 4 will result in
relocating the westbound off-ramp to the east of Bailey Road along Canal Road near
Emerald Cove Drive. Persons wishing to access the Bailey Road area will exit SR 4 onto
Canal Road and continue westbound on Canal Road to Bailey Road.
Temporary rerouting of westbound off-ramp traffic would add to existing AM
peak hour trips on Canal Road in the vicinity of Bel Air Elementary School. The
following features are being considered by the Mount Diablo Unified School District and
Contra Costa County for inclusion in the project description:
• Before constructing the new off-ramp, reconstruct Canal Road west of Bailey
Road. This would deter through traffic from using Canal Road through the
Bailey Road area.
• Construct a fence and a protected path around the school parking lot to avoid
conflicts between children and cars.
• Install flashing school signs on Canal Road to warn oncoming traffic.
• Install a 3-way stop sign at the Madison Avenue/Canal Road intersection to help
slow traffic in front of Bel Air school.
• Provide a traffic guard during the AM peak hours at the school parking lot and
school bus turn around areas to stop traffic on Canal Road for buses, parent drop-
off and pedestrians.
• Install a temporary barrier along the north side of Canal Road, between the
pavement and sidewalk to provide a protected walkway for children travelling
to and from Bel Air school.
• Reroute school buses via Lotus Road to Canal Road so that buses can enter Bel
Air school via a right-turn rather than a left-turn across on-coming traffic on
Canal Road as currently occurs.
21
ADDITIONAL CANAL ROAD WIDENING
Canal Road, at the Canal Road/Bailey Road intersection, will be widened
approximately 12 feet to the south to provide a left turn lane from westbound Canal
Road onto southbound Bailey Road. This widening was not evaluated in the Draft or
Final EIRs and will result in a minor additional sliver take along the Shell service station
frontage on the southeast corner of Canal Road and Bailey Road.
RELOCATION OF WETLAND MITIGATION AREA
The original project plans included a 0.87 acre wetland mitigation area, located
on the west side of Amberson Road, between Canal Road and Mims Avenue. This site
was also proposed to be developed as a detention pond to accommodate increased
runoff associated with the BART parking lot and future development in the Bailey Road
area.
During the final design process it was determined that the proposed wetland
mitigation site located west of Amberson Road was not appropriate because it was
proposed to be both a wetland mitigation site and stormwater detention facility.
Therefore, the proposed wetland mitigation area will be relocated to a mitigation area
of approximately two acres within an eight acre vacant lot located east of Ambrose
Park, just south of SR 4 (see Figure 3.2). The new site will not be used as a detention
pond. The detention pond may also be relocated, as described below.
The U.S. Army Corps of Engineers (Corps) and the California Department of Fish
and Game (DFG) will review the wetland impacts of the project and the proposed
mitigation. The County will be required to obtain permits from the Corps (404 permit)
and the California Department of Fish and Game (1601 agreement) prior to filling any
wetlands on the project site.
RELOCATION OF DETENTION POND
The project originally proposed construction of a 72-inch diameter storm drain
along Canal Road to carry runoff east to a 4.2-acre foot capacity detention pond to be
created on the west side of Amberson Road, between Canal Road and Mims Avenue.
The current detention pond is still being proposed. However, an alternative
location at the north-west corner of the proposed BART parking lot, to be located south
of SR 4 west of the Oak Hills Shopping Center, is also being considered.
22
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ADDITIONAL WIDENING OF BAILEY ROAD
Additional right-of-way would be required along the east side of Bailey Road,
from the SR 4/Bailey Road interchange south to West Leland Road. An area
approximately 500 feet long by 12 feet wide (6,000 sq. ft.) would be required from the
existing properties located along the eastern side of Bailey Road to provide for additional
lanes on Bailey Road. This additional right-of-way take would not result in the
displacement of any structures along Bailey Road.
ADDITION OF HIGH OCCUPANCY VEHICLE (HOV) BYPASS LANES
HOV bypass("diamond") lanes on eastbound and westbound SR 4 on-ramps were
not originally included as part of the proposed project, although metering equipment
was proposed to be installed on the ramps.
Under the current design, HOV bypass lanes will be provided on both the
eastbound and westbound SR 4 on-ramps from Bailey Road. Both on-ramps will consist
of two through lanes and one FIOV latae (on the left side) beginning at the intersection
of the ramps with Bailey Road. The two through lanes will merge into one lane at the
end of the on-ramps.
Ramp metering equipment will be installed (and operational from the first day)
at the end of the on-ramps. The HOV bypass lane will not be restricted by metering,
although the FIOV lane also merges with the through lanes prior to entering SR 4.
WIDENING SIDEWALK ALONG BAILEY ROAD
The proposed project originally did not include any improvements to the existing
5.5-foot sidewalk on the west side of Bailey Road between the relocated Canal Road and
westbound on-ramp to SR 4. However, this sidewalk will be widened to 12 feet,
requiring additional right-of-way along this portion of Bailey Road. The additional
right-of-way take required for widening the sidewalk would not result in any residential
or business displacement along Bailey Road. The 12-foot wide sidewalk will provide the
necessary connection for the Delta-De Anza Regional Trail.
In addition, the proposed project included a 10-foot sidewalk along the east side
of the relocated Canal Road. The provision of a 12-foot sidewalk along Bailey Road
makes this improvement unnecessary. Therefore, the sidewalk in this area will remain
4.5 feet wide, and will not connect back to the existing Canal Road (westbound on-
ramp). Instead, the sidewalk will end along the relocated Canal Road.
24
r
RELOCATION OF MADISON TREATMENT PLANT
The original project description included removal of the Madison Water Treatment
Plant (owned by California Cities Water Company) to accommodate the widening of SR
4 east of Bailey Road. Expansion of the Hill Street Treatment Plant (also owned by
California Cities Water Company) was proposed to replace the water service
requirements provided by the Madison Treatment Plant.
The Contra Costa County Water District (CCCWD) recently filed a condemnation
action with the intent to close the entire California Cities Water Company treatment
facilities in West Pittsburg, including the Madison and Hill Street treatment facilities.
The Water Company has filed a challenge and is attempting to dismiss the
condemnation action.
Because of the condemnation action initiated by CCCWD there is some
uncertainty regarding the need to relocate the Madison Treatment Plant as indicated in
the original project description. For this reason, the project description has been revised
to layout a more specific course of action for relocation of the Madison Treatment Plant
and expansion of the Hill Street Treatment Plant that takes into consideration the
pending condemnation action. The additional specificity of these changes is warranted
by the uncertainty of the CCCWD condemnation action and that resolution of this issue
may not occur for an extended period of time. The portion of the project description
pertaining to relocation of the Madison Treatment Plant and expansion of the Hill Street
Treatment Plant is supplemented with the following:
If necessary, the proposed project will include expanding the Hill Street Treatment Plant
to accommodate the removal of the Madison Treatment Plant from the California Cities Water
Company's water service system. However, if the California Cities Water Company's water
service system is abandoned in response to the CCCWDs condemnation action, it will no longer
be necessary to expand the Hill Street Treatment Plant to accommodate the relocation of the
Madison Treatment Plant. Until the condemnation action filed by CCCWD is final, it cannot
be ascertained whether relocation of the Madison Treatment Plant and expansion of the Hill
Street Treatment Plant will be necessary.
Therefore, the project will provide for the relocation, if any, of the services provided by
the Madison Treatment Plant in the following manner:
1. The County will determine the cost of reestablishing the services provided by the Madison
Treatment Plant prior to its demolition.
2. An amount equal to the estimated relocation cost (less any amounts paid to California
Cities Water Company for the Madison Treatment Plant by the County or deposited to
obtain immediate possession of the Madison Treatment Plant should condemnation be
required) will be deposited by the County into an interest bearing account.
25
3. The estimated relocation cost would not be withdrawn from the account by either
California Cities Water Company or the County except by court order, after a noticed
hearing. The court would be given the power to release the deposit in whole or in part
to either:
(i) California Cities Water Company: to reimburse the Water Company for the cost
Of actually expanding the Hill Street Water Treatment Plant, less a credit for any
depreciation of the Madison Treatment Plan as permitted by California eminent
domain law, to provide for the services previously provided by the Madison
Treatment Plant, in the event that the CCCWD does not acquire the California
Cities Water Company; or
(ii) Contra Costa Count: in the event that the court finds that there is a reasonable
probability that the CCCWD will acquire the California Cities Water Company
and abandon the Hill Street Water Treatment Plant or to return any remaining
balance after payment to the Water Company.
In the interim period between the acquisition of the Madison Treatment Plant by the
Counly and the determination of whether or not the Hill Street Treatment Plant will remain in
set-vice, interim emergency back-up water set-vice to the area served by the Madison Street
Treatment Plant will be provided by the City of Pittsburg, with the consent of the CCCWD.
If necessary, the County ntay release a portion, or all, of the money deposited for the
relocation of the Madison Treatment Plant to pay for improvements to the Hill Street Treatment
Plant.
As indicated above, this language is provided to clarify the process by which the
County will relocate the Madison Treatment Plant, if necessary, given the current status
of the CCCWD condemnation action.
INTERIM WATER SUPPLY
The Final EIR identified that during the period between the demolition of the
Madison Treatment Plant and expansion of the Hill Street Treatment Plant, or other
long-term water source (i.e. CCCWD), local water requirements may need to be met
through an interim source provided by either California Cities Water Company, the City
of Pittsburg and/or Contra Costa County Water District.
During the final design phase of the project, it has been determined that the City
of Pittsburg will provide interim water supplies to the West Pittsburg area. The City of
Pittsburg utilizes a different disinfection process than California Cities Water Company.
The City of Pittsburg uses Chloramine rather than Chlorine which is used by California
Cities Water Company. Pittsburg also fluoridates their water supply. (Dale Berglund,
Administrative Analysis, Contra Costa County Water District, Personal Communication,
26
2/9/93). This difference in the disinfection process was not identified in the FEIR.
However, it will not affect the quality of the water in the West Pittsburg service area.
The change in the disinfection agent may affect persons on dialysis machines, fish and
hospitals if not properly notified in advance of the change in disinfection process.
However,if properly notified,standard procedures can be implemented to accommodate
the change in disinfectant.
27
7 A
4. ENVIRONMENTAL IMPLICATIONS
The minor technical changes to the project description identified during the final
design process, and discussed in Chapter 3, would create environmental impacts that
were not addressed in the Draft and Final Environmental Impact Reports for the project.
These additional environmental impacts are not considered significant or adverse. In
some cases the changes to the original project description would result in beneficial
impacts or a reduction in the severity of the impacts as discussed in the Draft and Final
EIRs. The environmental impacts of each minor technical change described in Chapter
3 are discussed below.
LOCATION OF THE BART TRACTION POWER SUBSTATION
Installation of a BART traction power substation between the SR 4 eastbound
lanes and the BART access drive from Bailey Road would result in the loss of a
proposed BART overflow parking lot at this location. BART has acquired an additional
8 acres of vacant land to the west of their property to be used as the overflow parking
lot. The land to be acquired is currently vacant and does not possess any unique
vegetative, wildlife or other features. Therefore, this impact would be considered less-
than-significant because sufficient mitigation has been identified so that no net loss of
BART parking would occur.
ADDITIONAL RESIDENTIAL DISPLACEMENT
The current proposal would result in the displacement of three additional
residential units located along Wollam Avenue. These residential properties are needed
for construction of the eastbound on-ramp and relocation of Memorial Way. The Draft
and Final EIR identified mitigation measures for residential displacement to reduce this
impact to a less-than-significant level. The mitigation measures identified in the Draft
and Final EIR will apply to the displacement of these units. No new or additional
mitigation measures are necessary. Therefore, the displacement of these additional
housing units would not be considered a significant change from the residential
displacement impacts discussed in the Final EIR, and adequate mitigation has been
identified to reduce this impact to a less-than-significant level. Contra Costa County as
the Lead Agency for the project will be responsible for complying with the relocation
requirements specified in the Draft and Final EIR.
Any excess property that may result from the acquisition and demolition of these
three residences would be dedicated tQ the Ambrose Park District to mitigate right-of-
way impacts to Ambrose Park.
28
The hazardous materials site investigation conducted for the Draft and Final EIR
evaluated hazardous materials on the three additional properties to be acquired. The
investigation identified potential soil contamination on one of the properties (485
Wollam). Asbestos may also be encountered in building materials. The Draft and Final
EIR includes mitigation measures to reduce this impact to a less-than-significant level.
These measures will apply to the removal of these three residences. No new or
additional mitigation measures are necessary.
NEW BART MAINTENANCE ACCESS
A new BART maintenance access will be provided under the westbound lanes of
SR 4 to provide access to the BART tracks in the freeway median. The maintenance
access would be located along Canal Road, east of Bel Air School.
The BART access would be for BART maintenance personnel only. The entrance
would be gated to restrict access to authorized personnel only. Therefore, this minor
change in the project description would not result in a significant impact on the
environment.
NEW ACCESS ROUTE TO PARCELS EAST OF AMBROSE PARK
The two parcels east of Ambrose Park (Seeno parcels) would be acquired by the
County. Therefore, no replacement access is necessary for these parcels. The third
parcel furthest east is being provided with two options as discussed on page 19. If the
property owner at the eastern end of the project limits accepts offer #1, as described on
page 19, 0.006 acres of wetlands will be affected by the driveway construction. The
impact will be mitigated as part of the wetland mitigation plan. With the acquisition of
the two Seeno properties, wetland impacts of 0.01 acres will be avoided.
This change in the project description would avoid the need for a new bridge over
the Contra Costa Canal which would be needed under the original project description.
With offer #1, the new access to the eastern parcel would be via Wedgewood Drive
located in the City of Pittsburg and would be through an existing residential
neighborhood. The impact on the residential neighborhood would be minimal because
the property to which access would be provided is currently vacant. If the parcel was
to develop in the future, an alternative to the Wedgewood Drive access may need to be
provided to avoid impacts on the local neighborhood.
The impact of the change in the access to these three undeveloped parcels is less-
than-significant because access to the Seeno parcels would no longer be needed as a
result of the County's purchase of these parcels and access to the eastern parcel would
be replaced, in-kind, and would avoid a new crossing of the Contra Costa Canal.
29
ADDITIONAL RIGHT-OF-WAY ACQUISITION - EASTERN END OF PROJECT
Additional right-of-way (approximately 15,000 sq. ft.) will be acquired at the
eastern end of the project and the two parcels to the east of Ambrose Park (Seen
parcels). The land to be acquired is currently vacant and does not possess any unique
vegetative, wildlife or other features. Therefore, the impact of this additional acquisition
would be less-than-significant.
RELOCATION OF BART PARK & RIDE LOT
The original project plans did not include an interim location for the BART Park
& Ride lot. The addition of an interim Park & Ride lot along West Leland Road adjacent
to the west boundary of the Oak Hills shopping center, or on the additional 8 acres
acquired by the County to the west of the BART parking lot, would result in a beneficial
impact. Project area residents would still be able to use a local Park & Ride lot until the
Bailey Road BART Station is completed. Both locations for the interim Park & Ride lot
are located in areas that are currently vacant and do not possess any unique vegetative,
wildlife or other features.
STAGED CONSTRUCTION AND TEMPORARY TRAFFIC ROUTING
Staged construction is proposed to reduce construction period traffic and
circulation impacts by constructing eastbound and westbound segments of the project
at separate times. The temporary traffic routing plans will reduce impacts to local
circulation during construction of the Bailey Road interchange.
Eastbound Traffic Relocation
To accommodate additional traffic on West Leland Road associated with rerouting
the eastbound Bailey Road off-ramp, parking would be restricted along the north side
of West Leland Road near the Oak Hills shopping center. Parking restrictions along
West Leland Road would result in a temporary loss of on-street parking spaces along
this roadway during construction of the eastbound off-ramp. However, the number of
parking spaces affected is minor.
The impacts associated with routing traffic to West Leland Road during
construction will include additional traffic along the portion of West Leland west of
Bailey Road, additional noise impacts associated with the additional traffic, and reduced
on-street parking as a result of parking restrictions. However, these impacts would be
temporary,and upon completion of the interchange improvements, traffic routing would
return to Bailey Road. For this reason, the impacts associated with rerouting eastbound
SR 4 traffic from Bailey Road to West Leland Road during construction would be less-
than-significant.
30
Westbound Traffic Relocation
Westbound SR 4 traffic destined for Bailey Road will be rerouted during construction
to Canal Road east of Bailey Road near Emerald Cove Drive. This temporary traffic
routing will increase AM peak traffic along Canal Road in the vicinity of Bel Air Elementary
School which is located along Canal Road near.Bailey Road.
The project features are as follows:
• Before constructing the new off-ramp, reconstruct Canal Road west of Bailey
Road. This would deter through traffic from using Canal Road through the
Bailey Road area.
• Construct a fence and a protected path around the school parking lot to avoid
conflicts between children and cars.
• Install flashing school signs on Canal Road to warn oncoming traffic.
• Install a 3-way stop sign at the Madison Avenue/Canal Road intersection to
help slow traffic in front of Bel Air School.
• Provide a traffic guard during the AM peak hours at the school parking lot
and school bus turn around areas to stop traffic on Canal Road for buses,
parent drop-off and pedestrians.
• Install a temporary barrier along the north side of Canal Road, between the
pavement and sidewalk to provide a protected walkway for children travelling
to and from Bel Air School.
• Reroute school buses via Lotus Road to Canal Road so that buses can enter
Bel Air School via a right-turn rather than an left-turn across on-coming traffic
on Canal Road as currently occurs.
The impacts associated with rerouting westbound SR 4 traffic from Bailey Road to
Canal Road east of Bailey Road near Emerald Cove Drive during construction would be
less-than-significant.
ADDITIONAL CANAL ROAD WIDENING
Widening Canal Road just east of the Canal Road/Bailey Road intersection for a
westbound turn lane to southbound Bailey Road would result in approximately 12 feet of
additional take along the Shell service station property on the southeast corner. However,
this impact would not result in the displacement of any gas station facilities. The existing
entrance and exit points may need to be redesigned, but there is adequate area for this
relocation. Therefore, this impact would be less-than-significant.
31
.. ' Y
RELOCATION OF WETLAND MITIGATION AREA
The project's wetland mitigation area is being relocated to an approximately 8 acre
vacant parcel located east of Ambrose Park. The new wetland mitigation site contains
some existing wetland habitat (0.44 acres) as well as upland/non-wetland, habitat. The
existing wetlands on the site will be expanded to approximately two acres to replace the
approximately 1.0 acres of wetlands that would be impacted by the project.
Development of a wetland mitigation area would improve the plant and animal species
diversity of the site and is considered a beneficial impact.
The initial wetland mitigation site proposed was also proposed to be a storm
drainage detention basin. Relocation of the wetland mitigation site would avoid
potential conflicts between management of the site for drainage and wetland habitat.
This is a beneficial impact associated with the relocation.
RELOCATION OF DETENTION POND
The original project description identified the creation of a 4.2 acre detention basin
to be located west of Amberson Road, between Canal Road and Mims Avenue. This
location is still being considered for the detention basin. However, during the final
design phase, an alternative location for the detention basin was identified. This
alternative location would be at the north-west corner of the proposed BART parking
lot south of SR 4 and west of the Oak Hills shopping center. This alternative location
would not result in any additional impacts because it would be incorporated into the
proposed BART parking lot. If this alternative location is utilized, the proposed storm
drainage improvements north of SR 4 would not be necessary.
ADDITIONAL WIDENING OF BAILEY ROAD
An area approximately 500 feet long by 12 feet wide would be acquired along the
eastern frontage of Bailey Road from SR 4 to West Leland Road to provide for additional
lanes. The additional right-of-way requirements in this area would affect the existing
sidewalk and portions of the front yards of residences located along the eastern side of
Bailey Road. The existing residential uses along Bailey Road would remain and no
residential displacement would occur as a result of this right-of-way acquisition.
Property owners affected by this additional right-of-way acquisition would be
compensated for the right-of-way required based on the fair market value of the land
as determined by an independent appraisal. Therefore, the impact of this additional
right-of-way acquisition would be less-than-significant.
32
ADDITION OF HIGH OCCUPANCY VEHICLE (HOV) BYPASS LANES
The provision of HOV bypass lanes and operational ramp metering equipment
on the eastbound and westbound on-ramps would result in a beneficial traffic impact
in the project vicinity and on SR 4. While ramp metering may result in additional traffic
back-up onto on-ramps to SR 4, the construction of HOV bypass lanes would help to
reduce this back-up. The provision of HOV lanes is considered a beneficial impact for
both air quality and local and regional traffic.
WIDENING SIDEWALK ALONG BAILEY ROAD
The sidewalk on the west side of Bailey Road would be widened from the existing
5.5 feet to 12 feet between the relocated Canal Road and the westbound on-ramp to SR
4. Widening of this sidewalk would not result in any residential or business
displacement. The right-of-way required for this sidewalk would affect landscaped
areas, portions of front yards, and parking areas. However, the right-of-way required
for this widening would not impact the existing uses in this area. Property owners
affected by the additional right-of-way acquisition would be compensated for the right-
of-way required based on the fair market value of the land as determined by an
independent appraisal. Widening of the sidewalk would result in improved pedestrian
access along the west side of Bailey Road and would provide the necessary connection
to the riding and hiking trail located along the south side of the eastbound on-ramp
which will continue through-Ambrose Park and across the Contra Costa Canal. This is
a result of the addition of a new pedestrian and maintenance bridge over the canal.
The project originally included a 10-foot sidewalk along the east side of Bailey
Road. During the final design phase, the plans were revised to include the 12-foot
sidewalk along the west side of Bailey Road as discussed above. The provision of the
sidewalk along the vest side of Bailey Road precluded the need to widen the sidewalk
along the east side. Therefore, the current plans include a 4.5 foot wide sidewalk along
the east side of Bailey Road. The impacts of this change in the project plans is less-
than-significant.
RELOCATION OF MADISON TREATMENT PLANT
As described in Chapter 3, since certification of the Final EIR, the Contra Costa
County Water District has filed a condemnation action to acquire the California Cities
Water Company. The Water Company is challenging this action. In the event that the
District is successful in acquiring the Water Company, it is the interest of CCCWD to
close the entire California Cities Water Company treatment facilities in West Pittsburg,
including both the Madison and Hill Street Treatment Plants. The closure would make
it unnecessary to relocate the Madison Plant to the Hill Street Plant. Depending on the
outcome of the condemnation action, the need to relocate the Madison Treatment Plant
and the expansion of the Hill Street Treatment Plant is uncertain. For this reason, the
33
project description has been revised to clearly provide a course of action that takes into
account the probability of closure of the Water Company facilities in West Pittsburg, in
the event that the Water Company is acquired by CCCWD.
The changes to the project description do not significantly alter the intent of the
original project description, which is to maintain a reliable and safe source of water for
residents of West Pittsburg. In the event that the CCCWD's condemnation action is
dismissed, the replacement of the Madison Treatment Plant by expanding the Hill Street
Treatment Plant would still occur. In the event that CCCWD acquires the Water
Company, relocation of the Madison Treatment Plant and expansion of the Hill Street
Treatment Plant would not be necessary. The latter situation would avoid the
displacement of five single-family residences that would be necessary to expand the Hill
Street Treatment Plant.
As indicated in the Draft EIR (page 3.8-5), during the period between the
demolition of the Madison Treatment Plant and either the expansion of the Hill Street
Treatment Plant or condemnation of the California Cities Water Company's treatment
facilities, local water supply requirements can be met by the City of Pittsburg or the
CCCWD. Minimal infrastructure improvements would be necessary to provide an
interim water source.
Because the changes to the project description provide more clarity regarding the
process by which the Madison Treatment Plant would be demolished and the Hill Street
Treatment Plant expanded, the impacts of this change are less-than-significant.
INTERIM WATER SOURCES
As described in Chapter 3, since certification of the Final EIR, it has been
determined that the City of Pittsburg will provide an interim supply of water to the
West Pittsburg area between the demolition of the Madison Treatment Plant and
expansion of the Hill Street Treatment Plant, or other long-term water source. Also as
indicated in Chapter 3, the City of Pittsburg water supply uses a different disinfection
process which uses Chloramine, rather than Chlorine as used by the California Cities
Water Company. In addition, the City of Pittsburg fluorinates their water supply. These
changes in the water supply will not affect water quality but could affect persons on
dialysis machines, hospitals and pets (fish) if water customers are not properly noticed
so that provisions can be made to accommodate the change in disinfection agent.
The State Department of Health Services,Office of Drinking Water,sets guidelines
for ensuring the public's safety with regards to drinking water. These guidelines require
that all customers, hospitals, outpatient facilities and pet stores be notified of a change
in disinfection agent. Under these guidelines, California Cities Water Company will be
required to prepare a notification plan to be reviewed and approved by the Department
of Health Services prior to any change in the drinking water. Once the notification plan
34
i
is approved, California Cities Water Company will be required to send notices to all
customers, hospitals, outpatient facilities and pet stores affected by the change prior to
implementing the interim water supply. (James Fyfe, Sanitary Engineer, State
Department of Health Services, Office of Drinking Water, personal communication,
2/16/93).
The change in disinfection process and the addition of fluoride to the water
supply would not result in a significant impact as a result of the standard notification
procedures. In general, this change will have no affect on most customers. However,
persons on dialysis machines, hospitals and persons with fish may need to make
adjustments to accommodate the use of Chloramine as a disinfectant. The most common
adjustment is the installment of an in-line filter to remove Chloramine from the water
before use. The installation of in-line filters is a simple procedure that would result in
a less-than-significant impact (Fyfe, 2/16/93).
35
5. CONCLUSION
As discussed in Chapter 4, the minor technical changes and additions to the
project description do not raise any new significant environmental issues and the
impacts associated with the changes would be less-than-significant. Therefore, the minor
technical changes and additions to the project description do not change the findings of
the Final Environmental Impact Report for the State Route 4/13ailey Road Interchange
Improvement Project.
Because the minor technical changes and additions to the project description will
not raise any new environmental issues or result in a significant adverse impact on the
environment, an Addendum to the Final EIR for the State Route 4/Bailey Road
Interchange Improvement project, pursuant to Section 15164 of the CEQA Guidelines,
is considered appropriate.
This Addendum will be considered by the Contra Costa County Board of
Supervisors at their March 23, 1993, regular meeting.
36
6. REPORT PREPARERS
This Addendum to the Final EIR for the State Route 4/Bailey Road Interchange
Improvement Project was prepared by consultants (Public Affairs Management) for
Contra Costa County.
The following consultants were the principal contributors:
Kay Wilson Principal in Charge
Public Affairs Management
Scott Steinwert Project Manager
Public Affairs Management
Trudy LaBarge Environmental Planner
Public Affairs Management
Technical assistance was provided by:
Gil Salazar Project Manager
Centennial Civil Engineers, Inc.
Alan Rosen Noise Analysis
Charles M. Salter Associates
The following County Staff was involved in the preparation'and review of this
report:
Dennis Barry Deputy Director
Contra Costa County Community
Development Department
Bob Faraone Senior Civil Engineer
Contra Costa County Public Works
Vickie Germany Environmental Planner
Contra Costa County Public Works
37