HomeMy WebLinkAboutOCSD 99-01RESOLUTION NO.OCSD 99-01
MAKING CERTAIN FINDINGS RELATING TO SIGNIFICANT
ENVIRONMENTAL EFFECTS IDENTIFIED IN THE DRAFT PROGRAM
ENVIRONMENTAL IMPACT REPORT FOR THE GROUNDWATER
REPLENISHMENT SYSTEM (“THE PROJECT”);ADOPTING A
MITIGATION MONITORING AND REPORTING PROGRAM;ADOPTING
A STATEMENT OF OVERRIDING CONSIDERATION;AND
AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION
RE SAID PROJECT
A RESOLUTION OF THE BOARD OF DIRECTORS OF THE ORANGE
COUNTY SANITATION DISTRICT MAKING CERTAIN FINDINGS
RELATING TO SIGNIFICANT ENVIRONMENTAL EFFECTS
IDENTIFIED IN THE DRAFT PROGRAM ENVIRONMENTAL IMPACT
REPORT FOR THE GROUNDWATER REPLENISHMENT SYSTEM
(“THE PROJECT”);ADOPTING A MITIGATION MONITORING AND
REPORTING PROGRAM;ADOPTING A STATEMENT OF OVERRIDING
CONSIDERATION;AND AUTHORIZING THE FILING OF A NOTICE OF
DETERMINATION RE SAID PROJECT
MARCH 24,1999
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WHEREAS,the Board of Directors of the Orange County Sanitation District
(OCSD),hereinafter referred to as “District”,is presently considering the approval of a
water reclamation project,described as the Groundwater Replenishment System,
hereinafter referred to as “GWR System”;and,
WHEREAS,District and the Orange County Water District of Orange County
(OCWD),California (hereinafter referred to as Water District)are the lead agencies for
the preparation and consideration of environmental documents for the GWR System,
pursuant to the California Environmental Quality Act of 1970,as amended,(“CEQA”),
the State of California CEQA Guidelines and District CEQA procedures;and,
WHEREAS,to assess the GWR System’s~environmental impacts objectively,
Water District has caused to be prepared a Draft Program Environmental Impact
Report (EIR)to assess the significant environmental impacts,mitigation measures,and
alternatives associated with the GWR System;and,
WHEREAS,Water District has consulted with other public agencies and the
general public,giving them an opportunity to comment on the Draft Program EIR as
required by CEQA;and,
WHEREAS,on December 8,1998,the Joint Cooperative Committee for the
Groundwater Replenishment System,previously formed by the District and the Water
District,held a duly-noticed public hearing to provide a further opportunity for the
general public to comment on and respond to the Draft Program EIR;and,
WHEREAS,Water District has objectively evaluated the comments from public
agencies and persons who reviewed the Draft Program EIR;and,
WHEREAS,the comments and recommendations received on the Draft Program
EIR,either in full or in summary,together with Water District’s responses to significant
environmental concerns raised in the review and consultation process,have been
included in the Final Program EIR;and,
WHEREAS,said Final Program EIR consisting of the Draft Program EIR and the
Final Program EIR have been presented to the members of the Board of Directors of
District for review and consideration prior to the final approval of,and commitment to,
the Groundwater Replenishment System.
NOW,THEREFORE,the Board of Directors of Orange County Sanitation
District,
DOES HEREBY RESOLVE,DETERMINE AND ORDER:
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SECTION 1 That the proposed Groundwater Replenishment System has
identified a number of significant or potentially significant environmental effects.These
impacts are identified in the Final Program EIR,that is appended to this Resolution as
ATTACHMENT “A”.
SECTION 2 That the Board of Directors do further find that changes or
alterations have been required in,or incorporated into,the proposed Project,which
avoid or substantially lessen significant environmental effects,all identified in the Final
Program EIR.
SECTION 3 Significant impacts identified in the Final Program EIR that will be
mitigated to less-than-significant levels by that District are as follows:
A.LAND USE AND PLANNING
The potentially significant effects of the Groundwater Replenishment System on Land
Use and Planning are described on pages 3-6 to 3-19 of the Program EIR/Tier 1 EIS.
Approval of the Project Action and the construction of the Groundwater Replenishment
System would result in the following impacts:
1.Construction of the new advanced water treatment plant will result in the
demolition of some existing facilities within the OCWD/OCSD complex
including part of the existing Water Factory 21 which will create
construction impacts including the generation of dust,construction traffic,
noise and potential conflicts with existing underground utilities.
2.The tall ammonia stripping towers on the western edge of OCWD’s
property will be removed.
3.New water treatment facilities will be constructed on a portion of the
Garfield Recreation Vehicle (RV)/SeIf Storage Yard which is located on
land owned by the OCSD.This will result in the need to impact the
operation of this facility and ultimately the permanent removal of RVs and
other material stored on this site.
4.Construction of the 78-inch major conveyance pipeline from the new
advanced water treatment plant to Kraemer Percolation Basin in Anaheim
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will temporarily disrupt a variety of land uses between the treatment
facilities and the Santa Ana River,depending upon which route is used.
The exact route the pipeline will follow will be determined by OCWD and
OCSD during final project design.
Under Option A,the pipeline would be constructed within the
OCWD/OCSD complex and along a portion of Garfield Avenue.
Pipeline construction would temporarily impact a portion of the RV/Self
Storage yard and the entrance to this facility.Access to the Southern
California Edison substation and the Village Nurseries on the south
side of Garfield Avenue will also be temporarily impeded.The flow of
traffic on the portion of Garfield Avenue impacted by pipeline
construction would also be temporarily impeded.
Under Option B,the pipeline would be developed within the
OCWD/OCSD complex and,from the complex to the Santa Ana River,
within exiting road rights-of-way.Construction of the pipeline would
temporarily impact commercial and industrial land uses along portions
of Mount Langley Street,Spencer Avenue,Mount Baldy Circle and
Condor Avenue.Dust and noise impacts would be created on these
land uses and some on-street parking would be temporarily removed
on some of these streets.The flow of traffic will also be impacted on
the streets where the pipeline is constructed.The San Diego Freeway
(1-405)will also be impacted by jacking the pipeline under the
Freeway.
Under Option C,the pipeline would be developed within the
OCWD/OCSD complex and,from the complex to the Santa Ana River,
within existing road rights-of-way,along a portion of a flood control
channel and under the San Diego Freeway.Noise and dust from
construction of the pipeline would temporarily impact employees
working in the administrative offices of the OCWD and the residential,
commercial and industrial land uses along portions of Ellis Avenue,
Ward Street,Talbert Avenue and Mac Arthur Boulevard.The use of a
portion of the East Valley Flood Control Channel would temporarily be
restricted during construction of the pipeline within the bottom or sides
of this Channel.The City of Fountain Valley Maintenance Yard and
Police Training Facility adjacent to the Channel would also be
temporarily impacted by noise and dust from construction of the
pipeline in the Channel.Some on-street parking would be temporarily
removed on Ellis Avenue,Ward Street and Talbert Avenue and the
flow of traffic on these streets would be disrupted.The San Diego
Freeway will also be impacted by jacking the pipeline under the
Freeway.
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5.For all pipeline options,once the pipeline reaches the Santa Ana River it
would be constructed under the Santa Ana River in the cities of Fountain
Valley and Costa Mesa and then within or adjacent to the River levy
through the cities of Costa Mesa,Santa Ana,Orange,Anaheim and
unincorporated County territory.The pipeline would also be developed
within the levy of the Carbon Canyon Diversion Channel in the City of
Anaheim.Construction of the pipeline in these areas will temporarily
disrupt the use of portions of the Santa Ana River Trail as it runs through
these cities and County territory,temporarily forcing a detour of the River
Trail.In Costa Mesa,pipeline construction will temporarily disrupt the
existing underground pipelines and other utilities known to exist within the
portion of the River levee within the City.Pipeline dust,noise and
construction traffic will temporarily impact a number of single-family
residences,aboveground high voltage power lines,Moon Park and an
industrial park in Costa Mesa.In Santa Ana,pipeline construction will
temporarily impact Centennial Regional Park,a number of single and
multi-family residences,Spurgeon Park,the sports fields at Spurgeon
Intermediate School and the mouth of Santiago Creek.Play on the River
View Golf Course in Santa Ana would be temporarily disrupted if the
pipeline is routed through the golf course.In Orange,pipeline
construction would temporarily impact the overpass of the Union Pacific
Railroad as it crosses the Santa Ana River and a number of businesses
and industrial land uses next to the River.In Anaheim,pipeline
construction will temporarily impact a number of single family,multiple
family and industrial land uses.The Kramer Percolation Basin would also
be impacted where the pipeline feeds into the Basin.The Santa Ana
Freeway (1-5),the Orange Freeway (SR57)and the Riverside Freeway
(SR-91)will also be impacted by jacking the pipeline under these
Freeways.
6.Improvements to and the extension of the Talbert Seawater Intrusion
Barrier will result in the need to repair existing water injection wells in Ellis
Avenue in Fountain Valley and construction of new water supply pipelines
carrying treated water to new injection wells to be developed within
streets in Huntington Beach,Costa Mesa and unincorporated County
territory.The precise location of the new wells will be determined during
the final design of the Groundwater Replenishment System.Construction
of new injection wells within public street rights-of-way will result in the
temporary disruption of traffic traveling on adjacent streets and temporary
dust,noise and construction impacts on the single-family residences,
commercial,educational facilities,electric substations and parks that front
onto or back up to the affected street rights-of-way.In unincorporated
County territory,a new water supply pipeline would be installed under and
within levees of the Santa Ana River,temporarily impacting users of the
Santa Ana River Trail.
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B.SOCIOECONOMICIGROWTH INDUCEMENT
The potentially significant effects of the Groundwater Replenishment System on
Socioeconomic/Growth Inducement are described on pages 3-27 to 3-30 of the
Program EIRJTier I EIS.Approval of the Proposed Action and the construction of the
Groundwater Replenishment System would result in the following impacts.
Impact on Employment
1.An additional 18 employees will be needed to operate Groundwater
Replenishment System facilities at full build out.
2.Construction of the Groundwater Replenishment System facilities will
result in a temporary increase in construction jobs necessary to build
system facilities.
3.Some treated water can be made available for use as industrial process
water,irrigation water or for other approved uses via connections to the
major conveyance pipeline in industrial areas,business parks,golf
courses,and parks located adjacent or proximate to the Santa Ana River
alignment.This may be perceived as growth inducing by some people.
Impact on Population and Housing
I.The Groundwater Replenishment System does not in any way affect the
availability or cost of housing in the project area since it does not require
removal of any homes,nor does it result in a substantial creation of new
jobs which could secondarily affect the population and housing
characteristics of the program area or region.
Impact on Low to Moderate Income Housing Needs
1.Implementation of the Groundwater Replenishment System is not
anticipated to affect the cost of housing in the program area,as it does
not remove existing housing nor fully meet the water demands for planned
growth in the program area or region.
C.GEOLOGY
The potentially significant effects of the Groundwater Replenishment System on
Geology are described on pages 3-38 to 3-40 of the Program ElRJTier I EIS.Approval
of the Groundwater Replenishment System and the implementation of the Proposed
Action would result in the following impacts.
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Pipeline rupture during a seismic event could result in underground and
surface spillage of treated water supplies,with the potential for localized
flooding,erosion,liquefaction,differential settlement and lateral
spreading.
2.The southerly portion of where treatment facilities will be developed and
most of the area of the Seawater Intrusion Barrier and injection wells will
be located in urbanized areas underlain by prime agricultural soils.
Development of the aforementioned facilities will remove these soils from
future agricultural use.
3.The OCWD/OCSD complex is located in an area subject to ground
shaking during future seismic events and is thus subject to potential
liquefaction.New advanced water treatment facilities developed within
this complex are subject to damage from liquefaction during future seismic
events.
4.Bec~ause the OCWD/OCSD complex is subject to ground shaking from
future seismic events,differential settlement and lateral spreading are
also possible within this complex.
5.The major conveyance pipeline will be subject to groundshaking during
future seismic events and thus would be subject to damage from soil
liquefaction.
6.Because the major conveyance pipeline is subject to future
groundshaking,differential settlement and lateral spreading of the soil
may occur,particularly where the pipeline is placed within the levees of
the Santa Ana River.Pipe placed within local streets will experience less
lateral spreading with increased distance from the Santa Ana River.Pipe
placed in the River bottom will not be subject to lateral spreading.
7.Water injection and new treated water pipelines developed as part of the
expansion of the seawater intrusion barrier will be subject to future
groundshaking during future seismic events and would be subject to
potential damage from soil liquefaction.
8.Wells and pipelines to be installed as part of the expansion of the
seawater intrusion barrier will be subject to future groundshaking and
differential settlement and lateral spreading of the soil may occur,
particularly where new pipelines are placed within the levees of the Santa
Ana River.Pipelines installed within local streets to serve new injection
wells will experience less lateral spreading with increased distance from
the Santa Ana River.
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D.WATER RESOURCES
The potentially significant effects of the Groundwater Replenishment System on Water
Resources are described on pages 3-463-61 of the Program EIRJTier I EIS.Approval
of the Proposed Action and construction of the Groundwater Replenishment System
would result in the following impacts:
Impacts on Surface Water/Flooding
1.Implementation of Groundwater Replenishment System facilities have a
direct temporary impact on the Fountain Valley Flood Control Channel,
the Santa Ana River,Santiago Creek,numerous flood control channels
and the Carbon Canyon Diversion Channel depending on where the
construction of the major conveyance pipeline occurs.
2.Groundwater recharge areas will be affected by the use of Kraemer
Retarding Basin for recharge.
3.An emergency outlet valve placed in the major conveyance pipeline at
some point along that portion of the pipe which lies south of I 7th Street in
Santa Ana will discharge treated water into the Santa Ana River in an
unusual emergency situation or when there is not residual capacity for
recharge of treated water at the Kraemer Basin
4.Conveyance facilities installed within the bottom of the Santa Ana River
and across flood control channels would be subject to damage from high
River flows should they be constructed during periods of heavy rainfall
events or during times when large amounts of water are released from
Prado Dam.
5.The construction of the major conveyance pipeline in the Santa Ana
River,Carbon Canyon Diversion Channel and Fountain Valley Flood
Control Channel would involve excavation and trenching in portions of the
channel bottoms and/or sides which would result in temporary siltation of
water in the channels and the ocean should heavy rain events occur
during construction or,in the case of the Santa Ana River,there is a
release of a large amount of water from Prado Dam.
6.Water traversing the area where the conveyance pipeline is being
installed could wash away soil during rainstorms if protective measures
are not implemented to protect the exposed soil.
7.Development of additional injection wells and pipelines would impact the
Santa Ana River and the Greenville Banning Flood Control Channel since
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a new reclaimed water pipeline would need to be constructed across
these facilities.
Impacts on Groundwater
8.The Groundwater Replenishment System will affect the Orange County
groundwater basin and the use of that basin as a water supply in that up
to 120,000 AFY of recycled water will ultimately be introduced into the
local groundwater basin.The quality of the recycled water could have a
significant impact on the quality of the groundwater.
9.Department of Health Service regulatory provisions could require that
some domestic water production wells be removed from service.
10.Recycled water flows spread in the Kraemer Basin would need to meet
the objectives for the unconfined portion of the basin,while flows injected
along the coast would need to meet the objectives for the confined portion
of the basin.
11.Since it appears that no vadose zone exists at Kraemer Basin,the
Groundwater Replenishment System must comply with the 2,000 feet
distance and 12-month criteria for spreading.Based on preliminary
hydrogeologic assessment,it appears that two existing production wells in
the Anaheim area would be affected by the project and have to be
abandoned.
12.Should modeling and field studies demonstrate that additional production
wells are within the minimum distance and travel times criteria,then
additional wells will have to be abandoned.
13.If the Talbert Gap Barrier is extended northward to include the Bolsa Gap,
some production wells in the Fountain Valley area may fall within the
2,000 foot,12-month zone of influence and would have to be abandoned.
Impacts on Marine Environment
14.Backwash and brines derived from desalination of secondary-treated
effluent from the Groundwater Reclamation System would be mixed with
the existing wastewater effluent from OCSD’s Plant No.I for ocean
disposal.
15.Using projected brine loads and concentrations,it is estimated that
wastewater effluent total dissolved salts (TDS)in brine coming from the
OCSD treatment plant would increase 711 to 851 mg/L by the year 2010,
with the receiving water TDS being about 35,000 mg/L.
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E.AIR QUALITY
The potentially significant effects of the Groundwater Replenishment System Project on
Air Quality are described on pages 3-68 to 3-77 of the Program ElRJTier I EIS.
Approval of the Proposed Action and the construction of the Groundwater
Replenishment System facilities would result in the following impacts:
Construction Impacts
1.Temporary air quality impacts will result from the construction of
Groundwater Replenishment System facilities.It is estimated that project
grading activities,emissions from construction equipment and workers
vehicles will generate a “worse case”total of 122 pounds of Carbon
Monoxide,15 pounds of Reactive Organic Compounds,125 pounds of
Nitrogen Oxides,79 pounds of particulates (PMIO)and 12 pounds of
Sulfur Oxides each day.
Long Term Regional Impacts
2.The Groundwater Replenishment System will generate long term regional
air quality impacts.The main source of regional emissions will be from
the use of natural gas and oil for the generation of electricity off-site.
Other emissions will be generated from the combustion of natural gas for
space heating and operations staff automobile traffic.At this time,the
quantity of emissions from this combustion is indeterminable.Further
studies will be necessary to determine the impacts of these emissions.
However,for a program of this size,emissions of this sort do not
constitute significant emissions.
3.Emissions will result from off-site generation of electricity to power
Groundwater Replenishment System facilities.At this time,the design of
the Groundwater Replenishment System is not complete.Therefore,the
electrical requirements for the program can only be roughly estimated.
However,it is not expected that these facilities will draw enough power to
constitute a significant adverse air quality impact at the point of
generation.Further studies will be necessary to more precisely calculate
power generation emissions.
Impacts from Cumulative Regional Emissions
4.Taken individually,emissions generated by the various aspects of the
Groundwater Replenishment System will probably not exceed the
SCAQMD thresholds of significance.However,the cumulative increase in
the regional emission levels due to the Groundwater Replenishment
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System may exceed the SCAQMD’s thresholds of significance for some or
all pollutants.
Compliance with Air Quality Planning —Consistency with AQMP
5.The Groundwater Replenishment System is not projected to significantly
impact the local air quality,therefore the project is found to be consistent
with the Air Quality Management Plan’s (AQMP)first criterion (Increase in
the Frequency or Severity of Violations).The population forecasts of
those to be served by the Groundwater Replenishment System are the
same demographics as the AQMD,and therefore the project is consistent
with the second criterion of the AQMP (Exceed Assumptions on the
AQMP).Thus it was determined that the Groundwater Replenishment
System is consistent with the AQMP.
F.TRANSPORTATION
The potentially significant effects of the Groundwater Replenishment System Project on
Transportation are described on pages 3-85 to 3-91 of the Program EIRJTier I EIS.
Approval of the Proposed Action and the construction of Groundwater Replenishment
facilities would result in the following impacts:
Construction Impacts
1.Construction of Groundwater Replenishment System facilities will result in
temporary impacts to public services such as mail delivery,sanitation
pick-up,transit operations and emergency services due to project
construction vehicles traveling on area roadways.
2.Temporary loss of access to adjacent property and loss of on-street
parking would occur with construction of some Groundwater
Replenishment System facilities.
3.The construction of the conveyance pipeline trench will require the import
of sand and export of spoil material which will temporarily increase the
level of truck traffic on streets used as haul routes.
4.Construction of the advanced water treatment plant will not significantly
impact area roadways since most project construction will be done
outside of roadway rights-of-way and is not expected to generate a
significant amount of traffic.
5.Should the major conveyance pipeline be constructed around the River
View Golf Course,project construction activities would impact 17th Street,
English Road and Alona Street in the City of Santa Ana.Considering the
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existing street width on English Road and Alona Street,it is likely that
these streets,which are fronted by residential land use,may be required
to be temporarily closed.Converting these streets to one-way traffic flow
may be possible.
6.Should the Option A alignment for the major conveyance pipeline be
followed,traffic on Garfield Avenue between Ward Street and the Santa
Ana River may temporarily be delayed by project construction vehicles.
7.Should the Option B alignment for the major conveyance pipeline be
followed,then on-street parking along portions of Mt.Langley Street,
Spencer Avenue,Mt.Baldy street and Condor Avenue would need to be
temporarily removed.Driveways to the commercial and industrial
businesses along these streets would also be temporarily obstructed,
interfering with access to these businesses.
8.Should the Option C alignment for the major conveyance pipeline be
followed,then temporary impacts to traffic operation on Ward Street and
Talbert Avenue would occur.The traffic volumes on Talbert Avenue
would likely result in LOS F conditions during the peak hours if the
number of lanes on this street were temporarily reduced from four to two.
9.Construction of the pipeline segments connecting the injection/extraction
wells to the treatment plant would result in temporary impacts to traffic
operations on Ellis Avenue,Garfield Avenue,Bushard Street,Yorktown
Avenue,Ward Street,Adams Avenue,East Mesa Verde Avenue and
Gisler Avenue,or other routes used for pipeline alignments.
LonQ-Term Operational Impacts
10.Operation of the expanded treatment facility will result in additional
employee,delivery and maintenance vehicle traffic traveling to and from
the OCWD/OCSD complex which will increase traffic volumes on streets
used by these vehicles.
11.The expanded treatment facility will result in the need for additional
chemical deliveries to the facility.The increase in chemicals being
delivered to this facility will include:
•7.7 truckloads per week of sulfuric acid;
•3.6 truckloads per week of threshold inhibitors;
•3.0 truckloads per week of lime~
•41.4 truckloads per week of sodium hypochlorite;
•I truckload of cleaning chemicals;
•1.2 truckloads of sodium hydroxide;and
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•1.2 truckloads of citric acid.
G.BIOLOGICAL RESOURCES
The potentially significant effects of the Groundwater Replenishment System on
Biological Resources are described on pages 3-103 to 3-105 of the Program EIRJTier I
EIS.Approval of the project and construction of Groundwater Replenishment System
facilities would result in the following impacts:
1.Construction of Groundwater Replenishment System facilities will
temporarily disturb the habitat on and adjacent to the areas where System
facilities are constructed.
2.Use of the Kraemer Basin for recycled water recharge will result in the
long-term alterations of the Basin due to fluctuations in the water level of
the Basin.
3.Birds could potentially be affected by construction and operation of
Groundwater Replenishment System facilities.
4.It is possible that water supply lines could be routed along the edge of a
park or golf course and disturb some ornamental and/or non-native
landscaping.
H.ENERGY AND MINERAL RESOURCES
The potentially significant effects of the Groundwater Replenishment System project on
Energy and Mineral Resources are described on pages 3-107 to 109 of the Program
EIR and Tier 1 EIS.Approval of the Proposed Action and the construction of the
Groundwater Replenishment System facilities would result in the following impacts:
Enemy Impacts
1.The Groundwater Replenishment System will require moderate quantities
of fossil fuels and electric power for System construction activities.
2.The Groundwater Replenishment System will require substantial amounts
of energy in the long-term to operate the pump conveying source water,
the various treatment processes and pumps at the advanced water
treatment plant,the pumps needed to deliver water to the Kraemer Basin
for recharge and to inject water into the Seawater Intrusion Barrier,and
for ancillary uses such as lighting,communications,heating and air
conditioning.
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3.Reverse osmosis (RO)treatment is a particularly energy intensive
process,although many advances have been made over the years to
reduce the energy requirements for operation of RO units.
4.The Groundwater Replenishment System will have the following
estimated total energy demand:
Phase 1 88.9 million kilowatt hours a year (kWh/yr)
Phase 2 133.2 million kWh/yr
Phase 3 177.7 million kWh/yr
Mineral Resource Impacts
5.The major conveyance pipeline for the Groundwater Replenishment
System will be constructed in areas that are designated as mineral
resource zoned for aggregate resources,including sand and gravel
resources which are used for area construction purposes.
6.There is an operating sand and gravel mine just north of Lincoln Avenue
and east of the Santa Ana River.However,the Groundwater
Replenishment System will not adversely affect existing mining activity in
this area.
HAZARDS/RISK OF UPSET
The potential significant effects of the Groundwater Replenishment Project on
Hazards/Risk of Upset are described on pages 3-113 to 121 of the Program ElRJTier I
EIS.Approval of the Proposed Action and the construction of the Groundwater
Replenishment System facilities would result in the following impacts.
1.There may be a perceived concern that the direct injection of reclaimed
water into the groundwater table may impact public health.
2.An emergency outlet valve will be incorporated into the major conveyance
pipeline south of 17th Street.In an unusual or extreme emergency
situation treated product water would be released into the Santa Ana
River.
3.Water from the Groundwater Replenishment System to be directly
injected into the Talbert Barrier will receive more MF filtration and receive
more demineralization with RO than System water sent to the Kraemer
Basin for percolation into the groundwater table.A portion of the flow will
be treated by granular activated carbon.In addition,a separate UV light
disinfection process will be provided to achieve the required 5-log
reduction in virus.Therefore,the advanced treatment process for the
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Talbert Barrier will be complete treatment with ME followed by partial
demineralization with RO.The remaining flow will receive granulated
activated carbon treatment for organics removal for the entire flowstream.
The RO permeate will be disinfected through contact time n the existing
Water Eactory-21 chlorinazation chamber with 5.0 mg/L free chlorine
residual,while the MF filtrate will be disinfected with two banks of UV
lamps providing up to 5-log reduction in any virus in this water.The two
streams will be blended together to consume all remaining free chlorine,
avoiding the formation of disinfection by-products.
4.The project will use sodium hypochlorite solution as the primary water
disinfectant.Up to 32,400 gallons per day will be used in the advanced
water treatment system.
5.Other chemicals that would be used as part of the advanced water
treatment include up to:
•6,000 gallons per day of sulfuric acid;
•7,200 pounds per day of lime;
•2,400 gallons per day of threshold inhibitor and;
•Small amounts of cleaning chemicals.
•1.2 truckloads of sodium hydroxide per week.
•1.2 truckloads of citric acid per week.
6.Sodium hypochlorite is a hazardous substance.Potential risks
associated with this material are accidental release from leaks,spills,and
rupture or traffic accidents.An accidental spill of a substantial quantity of
sodium hypochlorite on the treatment plant site could result in direct
exposure of site workers and possibly occupants of adjacent properties to
vapors,which would most likely result in respiratory irritation,particularly
in sensitive individuals.Prolonged contact with this material could result
in skin irritation,although non long-term,adverse health effects are
known to be associated with exposure.
7.The accidental release of sulfuric acid poses the greatest public health
hazard.This material is highly corrosive to all body tissues and direct
contact or inhalation of fumes can cause severe burns.Ingestion of
sulfuric acid can be fatal.An uncontrolled release of sulfuric acid from
storage tanks on the OCWDIOCSD site or as a result of a traffic accident
involving truck delivery would likely result in significant adverse effects to
occupants of the site and surrounding area.
8.The remaining chemicals use on the site consist of mild acids and dry
alkaline compounds which are not anticipated to present a potential public
health threat.
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9.Subsurface soil and groundwater contamination from hazardous wastes
may be encountered during proposed construction activities involving
excavation.Hazardous waste contamination can result in potential clean
up liability issues but may also pose a serious human health threat to
persons exposed to the contaminants during conveyance pipeline
excavation activities.
10.Implementation of the Groundwater Replenishment System may result in
temporary impacts related to emergency vehicle access.These
construction related impacts would occur for approximately one month
during the construction period for any location adjacent to the conveyance
pipeline.This would be particularly difficult if the conveyance pipeline
was placed in the narrow streets adjacent to the River View Golf Course.
Preservation of emergency access would be extremely problematic.
Should Option B be selected for the installation of the conveyance
pipeline between the OCWD/OCSD complex,then emergency access to
the commercial and industrial land uses along portions of Mt.Langley
Street,Spencer Street Mt.Baldy Street and Condor Avenue may not be
maintained throughout construction,and delays in response time may
occur.
11.Traffic flow on roadways adjacent to pipeline and injection well
construction areas would be slower,although it is not anticipated that this
will result in an increase in accidents,particularly serious ones.
12.Children playing in or near construction areas during non-construction
hours may be injured.
13.In the unlikely event of pipeline rupture due to a major seismic event or
other cause,temporary flooding in areas not specifically designed to
convey large amounts of flowing water could cause extensive damage.
Such an event could disrupt public services,utilities,use of surface roads
and emergency services for an undetermined amount of time.If the
conveyance pipeline were to be installed in the streets adjacent to the
River View Golf Course,pipeline rupture could result in flooding that may
significantly damage the homes which are immediately adjacent to the
narrow 36-foot street rights-of-way.
Under option A,conveyance pipeline failure outside of the Santa Ana
River alignment could possibly result in flooding the Southern California
Edison substation and Village Nursery along Garfield Avenue.
Substantial flooding could disrupt electrical service in some locations if
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the substation is adversely affected.Temporary traffic impacts could also
occur along portions of Garfield and Ward Street.
Under Option B,conveyance pipeline failure could possibly result in
flooding within the commercial and industrial uses along Mt.Langely
Street,Spencer Street,Mt.Baldy Street and Condor Avenue.Businesses
adjacent to the point of rupture may experience property damage and
temporary loss of access.Temporary traffic impacts would also occur if
flooding occurred along Ellis Avenue and Ward Street.
Under Option C conveyance pipeline failure could possibly result in
flooding of adjacent residential land uses west of Ward Street and
business park uses east of Ward Street.Business park uses south of
Talbert Avenue could also be affected.Land uses adjacent to the point of
rupture would receive the most substantial property damage.
14.There is the potential that the weedy vegetation within the Santa Ana
River where the conveyance pipeline is to be installed could catch on fire
during pipeline construction activities.
15.There is the potential for construction equipment and supplies to be
stolen during project construction activities.
J.NOISE
The potentially significant effects of the Groundwater Replenishment System on Noise
are described on pages 3-129 to 3-133 of the Program ElRJTier 1 EIS.Approval of the
Proposed Action and the construction of the Groundwater Replenishment System
would result in the following impacts:
Construction Noise Impacts
1.Rock drills may be required for the construction of some of the System
injection wells and jackhammers may be necessary for pipeline
construction.This equipment will create temporary construction noise
levels from 70 to 105 dBA at a distance of 50 feet from these construction
areas.
2.Sites near the treatment plant will experience temporary construction
noise levels ranging up to the high 80 dBA range.
3.Sites near the major conveyance pipeline and seawater intrusion barrier
pipeline routes may experience temporary construction noise levels
ranging up to the high 90 dBA range.
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4.Should the conveyance pipeline be constructed on streets adjacent to the
River View Golf Course then the homes adjacent to these streets will be
temporarily subject to high noise levels.
5.Sites,including residential land uses,near the injection wells could
experience temporary construction noise levels in the 100 dBA range.
Haul Truck Noise Impacts
6.It will be necessary to use haul trucks in order to construct the
Groundwater Replenishment System facilities.Temporary haul truck
noise on residential streets would constitute a significant noise impact
because ambient (background)noise is fairly low.Construction traffic
would raise noise levels in residential neighborhoods and constitute a
significant impact.
7.Haul route traffic atop the levee along the Santa Ana River would
temporarily impact residential neighborhoods along the portion of the
River levee where the conveyance pipeline is constructed.
8.Temporary haul route traffic along arterial roadways would most likely not
constitute a significant impact because such roadways already carry high
traffic volumes to an extent that additional project trucks would not raise
noise levels by more than 3 dBA and would not generally be noticeable to
motorists and adjacent receptors.
Operational Noise Impacts From the Treatment Plant
9.Long-term operational noise will be generated by the System treatment
plant,pumps and injection wells.At this time,the design of the treatment
plant is only conceptual so the level of noise that would be generated is
not known at this time.
K.PUBLIC SERVICES
The potentially significant effects of the Groundwater Replenishment System on Public
Services are described on pages 3-137 to 3-141 in the Program EIR/Tier I EIS.
Approval of the Proposed Action and the construction of the Groundwater
Replenishment System would result in the following impacts:
1.Construction of facilities called for by the Groundwater Replenishment
System will result in the creation of open trenches and equipment left
unsecured which will result in a temporary increased need for security
services in construction areas to prevent potential theft,vandalism or
injury to persons who may enter construction sites.This will result in a
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temporary increase in the need for police,fire protection and emergency
services.
2.The Groundwater Replenishment System will not result in any direct
impact to any school facilities.However,it may temporarily impact the
entrance and exit to a school training facility on Yorktown Avenue in
Huntington Beach.
3.The construction of Groundwater Replenishment System facilities will
require temporary lane closures on streets that serve as public bus
routes.While existing bus routes will be maintained during construction
activities,bus riders may have to walk slightly farther around construction
zones to access sidewalks.Bus stops may be temporarily shut down and
people routed to the nearest stop,or routes may be moved to the nearest
parallel street.
4.The construction of Groundwater Replenishment System facilities may
temporarily impact paratransit or door-to-door bus service which is used
by the elderly and disabled.However,paratransit service will be
maintained during construction activities,although those using this
service may have to change the location where these vehicles pick them
up.
5.The construction of Groundwater Replenishment System facilities will
create additional amounts of construction debris,including spoil material
unearthed during excavation of pipeline trenches,that must be disposed
of in area landfills.It is estimated that up to two cubic yard of spoil
material may be generated per each linear foot of pipeline trench.Should
contaminated soils be uncovered during trenching activities then this
material would need to be disposed of at a Class I landfill.
6.Refuse collection services pickup points may need to be temporarily
relocated due to the construction of pipeline trenches in some street
rights-of-way in the project construction area.However,project
construction activities will not interfere with pickup of refuse generated by
the land uses located adjacent to project construction areas.
7.Should conveyance pipeline Option B be selected,construction of the
pipeline on Ellis Avenue and Talbert Avenue would temporarily impact
bus routes 37 and 74.
8.Construction of a potential water injection well could indirectly impact the
Isojiro Oka School at 9800 Yorktown Avenue which is operated by the
Fountain Valley School District.
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L.UTILITIES AND SERVICE SYSTEMS
The potentially significant effects of the Groundwater Replenishment System on
Utilities and Service Systems are described on pages 3-147 to 3-151 of the Program
EIR/Tier I EIS.Approval of the Proposed Action and the construction of the
Groundwater Replenishment System would result in the following impacts:
1.During construction of the Groundwater Replenishment System project,
project water pipelines will cross other existing water pipelines.The
conveyance pipeline could potentially impact the OCWD force main at
Ball Road/Taft Avenue which delivers replenishment water from the Burns
Pit Pump Station to the Bond Street recharge basin.This water pipeline
will be protected in place.All other water pipelines impacted by project
pipeline construction will be protected in place or relocated.
2.Project water pipelines will cross existing natural gas pipelines.Existing
gas pipelines will either be protected in place or will be relocated.
3.Project water pipelines will cross existing local electric distribution lines.
These electrical lines will either be protected in place or will be relocated.
The System conveyance pipeline will be constructed under and/or
adjacent to the massive electric transmission line easement located to the
east of the Santa Ana River between the San Diego Freeway and Garfield
Avenue.
4.Project water pipelines will cross existing sewer lines including the Santa
Ana River Interceptor and other OCSD trunk sewer lines.These sewer
lines will be protected in place.All other sewer lines will either be
protected in place or will be relocated.
5.Project water pipelines will cross existing storm drains.Conveyance
pipeline Option C would directly impact a portion of the Fountain Valley
Flood Control Channel Right-of-way between Ward Street and Talbert
Avenue.Should this Option be selected then this flood control channel
will be trenched and open cut,the conveyance pipeline installed and the
flood control channel would be reconstructed above the pipeline.The
major conveyance pipeline will be constructed from the Santa Ana River
to the Kraemer Basin in the Carbon Canyon Diversion Channel.Other
flood control channels or storm drains will either be protected in place or
will be relocated during dry weather.
6.Project water pipelines will cross existing communication trunk lines.
During construction,communication lines will either be protected n place
or will be relocated.
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7.Project water pipelines will cross cable television lines.During
construction,cable television lines will either be protected in place or
relocated.
8.The Groundwater Replenishment System will assist the OCSD by using a
large supply of secondary treated wastewater.This reduces the amount
of wastewater that is discharged to the ocean outfall.This reduction is
important during peak storm periods when the capacity of the outfall could
be exceeded.
9.The Groundwater Replenishment System will enhance the dependable
dry season water supply by using the steadily available supply of treated
wastewater from the OCSD Plant.
M.AESTHETICS/LIGHT AND GLARE
The potentially significant effects of the Groundwater Replenishment System on
Aesthetics are described on pages 3-3-1 56 to 3-161 of the Program ElRiTier I EIS.
Approval of the Proposed Action and the construction of the Groundwater
Replenishment System would result in the following impacts:
1.Numerous treatment facility components will be constructed on the
OCWD/OCSD site.These facilities would modify views from the adjacent
streets since the following structures would be developed:
•A Granular Activated Carbon (GAC)building which could be up to
30 feet tall;
•An UV disinfection building which could be up to 30 feet tall and
located near Ellis Avenue;
•An MF/UF building which could be up to 30 feet tall;
•An RO facility which will not exceed 40 feet in height.
•A pump station building approximately 25 feet tall;
A one story maintenance/Storage building approximately 20 feet
tall;and
•Various small one-story support buildings including a visitors
center and a cleaning/chemicals storage building.
2.Construction impacts related to proposed treatment facilities include
modification of views from adjacent streets during the day as well as at
night if construction scheduling mandates nighttime construction
activities.
3.It is possible that some construction could occur during the early evening
hours of darkness in winter months,creating light and glare impacts from
these activities.
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4.Construction-related visual impacts associated with pump stations would
include those to views from adjacent and surrounding properties during
the day.Additionally,nighttime impacts could occur if construction
scheduling mandates evening or nighttime construction activities.
5.Option Alignment A conveyance pipeline construction impacts would
include temporary effects on views from within the street right-of-way and
adjacent properties both during the day as well as at night if construction
related scheduling mandates evening or nighttime construction activities
which could generate light/glare onto adjacent property.
6.Option Alignment B conveyance pipeline construction impacts would have
the same aesthetic impacts as Option A.However,because a longer
route is involved which abuts an array of businesses,construction would
likely occur mostly at night.During the daytime,both workers and
business patrons would experience temporary visual impacts due to idle
construction equipment,pipeline staging areas and excavated material
piles.
7.Option Alignment C conveyance pipeline construction would generate
temporary construction-related and nighttime impacts similar to those
described for Option A.
8.The conveyance pipeline would be constructed within sections of the
Santa Ana River and the Carbon Canyon Diversion Channel.
Construction in these areas would temporarily impact views from
surrounding properties and freeway crossings as well as to users of the
Santa Ana River Trail.Surrounding properties would be impacted during
the day and night if construction scheduling mandates activities during
hours of darkness.
9.If the conveyance pipeline is developed through the River View Golf
Course then vegetation within the golf course will be temporarily removed,
creating a visual impact to visitors to the golf course.
10.If the conveyance pipeline is developed on the streets surrounding the
River View Golf Course then extensive temporary visual disturbance
would occur to the occupants of the single family homes that line the
streets where the pipeline would be installed.
11.Construction of addition injection wells and pipelines to supply these wells
will result in temporary light/glare impacts onto adjacent properties and
temporary visual impacts due to idle construction equipment,pipeline
staging areas and excavated material piles.
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N.CULTURAL RESOURCES
The potentially significant effects of the Groundwater Replenishment System project on
Cultural Resources are described on page 3-175 to 3-178.Approval of the Proposed
Action and construction of the Groundwater Replenishment System would result in the
following impacts:
Paleontological Resources Impacts
1.The advanced water treatment plant would be developed within the
OCWD/OCSD complex which is of low to no paleontologic sensitivity.
2.The major conveyance pipeline would be constructed in sediments of low
to no paleontologic sensitivity.
3.If the Seawater Intrusion Barrier be constructed on the Huntington Beach
or Costa Mesa mesas they would be constructed within sediments with a
high paleontologic sensitive.Trenching,grading and well drilling have
the potential to impact both vertebrate,plant and invertebrate fossil
materials in these areas.
Archaeolociica I/Historical Resource Impacts
4.Development of the advanced water treatment plant will not result in any
impacts on archaeological or historic resources since it is believed that
none of these resources exist within the project site.
5.Depending on the alternative selected for the conveyance pipeline and
construction methods used for the installation of the pipeline,all or
several of the archaeological sites and the Pacific Electric Bridge which
crosses the Santa Ana River near 5th Street may be impacted by
construction of this pipeline.CA-ORA-517,CA-ORA-428-429,and -130
are between 1,000 and 2,000 feet from the pipeline route.
6.There is the potential for buried historic and archaeological remains to be
found during construction of the conveyance pipeline.The extent of this
impact will not be known until any of the resources that are found are
evaluated for their eligbuity for listing on the California Register or the
National Register of Historic Places.
7.Depending on the location/route selected for new injection wells and
pipelines to serve them,all or several of a number of archaeological sites
may be impacted by the development of these facilities.The archeological
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sites are CA-ORA-76,CA-ORA-163,CA-ORA-516,CA-ORA-145,
CA-ORA-283,CA-ORA-302 and CA-ORA-356.
0.RECREATION
The potentially significant effects of the Groundwater Replenishment System on
Recreation are described on pages 3-189 to 3-191 of the Program ElRJTier I EIS.
Approval of the Proposed Action and the construction of the Groundwater
Replenishment System would result in the following impacts:
1.The construction of the advanced water treatment will not result in any
impacts to existing recreation resources since there are no recreation
resources within or adjacent to the treatment plant site.
2.Construction of the major conveyance pipeline would create a direct but
temporary disturbance to portions of the River View Golf Course and the
Santa Ana River Trail where pipe is being installed.
3.Parks adjacent to the construction area in the Santa Ana River Trail and
east levee of the River will not experience direct physical impacts,but
park users may be subject to temporary construction noise and potential
construction-generated dust.
4.In many of the parks adjacent to the Santa Ana River Trail,patrons will be
able to move away from the temporarily noisy area near the construction
zone which will be the case in Moon Park in Costa Mesa,Spurgeon Park,
Edna Park and Alona Park in Santa Ana and golfers on Willowick Golf
Course,also in the City of Santa Ana.
5.Some park patrons using designated facilities near the construction zone
will be unable to move further away from the temporary construction
noise.This is the case in Centennial Regional Park where an outdoor
sports arena used for Soccer and other sports is located adjacent to the
construction zone and spectator bleachers are immediately located
adjacent to the Santa Ana River Trail.
6.Golfers using the River View Golf Course will be precluded from
traversing any part of the course within or adjacent to the conveyance
pipeline construction zone.Since construction may occur on the east
edge of the course it may be possible that holes on the west edge of the
course could be kept in play.Should this occur,golfers may be exposed
to minor impacts from temporary construction noise,access impairment
and construction-generated dust.Precise impacts will be determined
once it has been decided which program option will be followed for the
placement of the pipeline through the golf course i.e.in the bottom of the
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Santa Ana River,along the east levee of the River or on streets adjacent
to the golf course.
7.Portions of the Santa Ana River will be temporarily disrupted during
pipeline construction.The entire trail between Gisler Avenue in Costa
Mesa and 17th Street in Santa Ana will be temporarily disturbed during
conveyance pipeline excavation and installation if the pipeline is installed
on the east side of the River.A short portion of the trail between Katella
Avenue and Taft Avenue in the City of Orange will also be temporarily
impacted at the point where the pipeline crosses from the east site to the
west side of the River.However,the trail will be kept open during
construction by detouring trail traffic around the construction areas.If
pipeline Option B were selected for installation of the pipeline one mile
less of the Trail would be excavated for pipeline installation.
8.The new injection wells and the water pipelines to supply these wells will
be constructed in the road rights-of-way adjacent to the north edge of
Lagenbeck Park along Garfield Avenue in Huntington Beach,the south
edge of Estancia park in Costa Mesa.The construction would also be
within the flood control right-of-way adjacent to the east edge of Alevalos
Park in Huntington Beach.These parks will not be physically impacted
but park users may be subject to temporary construction noise and
potential construction-generated dust.Park patrons will also be able to
move away from noisy areas near the injection well/pipeline construction
areas.
9.Part of Mesa Verde Golf Course may be directly impacted during the
construction period if pipeline or injection wells are installed along the
south edge of the course.
10.During refurbishment of existing injection wells along Ellis Avenue,the
construction zone will be adjacent to Ellis Park and would result in
temporary noise and dust impacts to the edge of this park.
P.ENVIRONMENTAL JUSTICE
The potentially significant effects of the Groundwater Replenishment System on
Environmental Justice are described on pages 3-194 of the Program ElRJTier I EIS.
Approval of the Proposed Action and the construction of the Groundwater
Replenishment System would result in the following impacts:
1.No housing units or businesses will be displaced by construction of any of
the facilities called for by the Groundwater Replenishment System.
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2.Residential areas which abut the project construction zones vary from
mobile home parks to multi-family,to middle and upper middle income
single family homes.All of these residences will be equally impacted by
dust,noise traffic and other construction related impact due to the
development of System facilities.
3.The benefit of protection from seawater intrusion would be greatest for the
groundwater pumps in Fountain Valley,Costa Mesa and Dyer Road well
field areas.
0.INDIAN TRUST ASSETS
The potential significant effects of the Groundwater Replenishment System project on
Indian Trust Assets are described on pages 3-196 of the Program EIR/Tier I EIS.
Approval of the Proposed Action and the construction of Groundwater Replenishment
System will not impact Indian Trust Assets since none are known to exist in Orange
County or in any of the cities where Groundwater Replenishment System improvements
would be located.
SECTION 4 For the following significant impacts,either no feasible mitigation
measures are available,or the District will implement certain feasible mitigation
measures,but residual impacts will still be significant or potentially significant.For
these impacts,specific economic,social or other considerations make infeasible other
mitigation measures or alternatives that may have been identified in the Final Program
EIR.Specifically,the proposed Groundwater Replenishment System project will result
in the following significant unavoidable adverse impacts.
•Some production wells within the vicinity of project could fall within the
minimum distance and travel time criteria for reclaimed water recharge or
injection and have to be abandoned.
•Emissions from construction activities for the Groundwater Replenishment
System will exceed the SCAQMD’s Threshold of Significance for NOx.
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•Should the Option B alignment for the major conveyance pipeline from the
advanced water treatment plant to the Santa Ana River corridor be chosen,
then numerous driveways to commercial and industrial businesses along
portions of Mt.Langeley Street,Spencer Avenue,Mt.Baldy;Street and
Condor Avenue will be temporarily blocked by construction of this pipeline.It
may not be possible to preserve access to all properties all of the time,
disrupting access to these businesses.
•Should the Option C alignment for the major conveyance pipeline from the
advanced water treatment plant be chosen and the roadway travel lanes on
Talbert Avenue be reduced from four to two during pipeline construction
activities,then LOS F levels would occur on Talbert Avenue during peak
hours where it is impacted by project construction activities.
•Should the major conveyance pipeline be routed around the River View Golf
Course on portions of English Road and Alona Street in Santa Ana,pipeline
construction activities could require complete closure of portions of these
narrow streets,or at a minimum,conversion to one way traffic flow.
•Should the major conveyance pipeline be constructed on the neighborhood
streets adjacent to River View Golf Course or along the Option B pipeline
alignment,then emergency access to land uses along the pipeline alignment
may be delayed.
•Chemical spills at the advanced water treatment plant and localized flooding
from ruptured pipelines could occur during a catastrophic seismic events
which exceed magnitudes used in the seismic design of project facilities.
•Groundwater Replenishment System construction noise levels would likely
be noticeable to residential land uses adjacent to the areas where System
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facilities are installed even if local noise ordinances are adhered to or limits
are placed on the time of day when project construction may occur.
SECTION 5 No significant impacts were identified in the Final Program EIR,
project changes or alterations,which require mitigation by another public agency,and
not the District.
SECTION 6 The District will implement the following mitigation measures for
impacts identified as less than significant in the Final Program EIR.
A.LAND USE AND PLANNING
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Land Use and Planning are:
LU-I The OCWD/OCSD will coordinate with the U.S.Army /Corps.of Engineers
(ACOE)on their plans to install project improvements along and within the
Santa Ana River.A copy of all project plans shall be submitted to the ACOE
for review and approval before any project construction begins.
LU-2 The OCWDIOCSD will coordinate with the Orange County Flood Control
District on their plans to install project improvements under and along the
Santa Ana River.A copy of all project plans shall be submitted for review and
approval before any project construction begins.The OCWD/OCSD shall also
enter into an agreement with the County for use of the Santa Ana River and
the Carbon Canyon Diversion Channel before any project construction begins.
The agreement shall address any economic loss to the District during the
construction of project improvements.
LU-3 The OCWD/OCSD will coordinate with Caltrans District 12 on their plans to
install project improvements under the San Diego,Santa Ana,Garden Grove
Orange and Riverside Freeways.The OCWD/OCSD will also obtain the
necessary Caltrans Encroachment Permit before any project construction
begins under any of these freeways.
LU-4 Should the Option C alignment for the major conveyance pipeline be selected,
the OCWD/OCSD will coordinate with the Orange County Flood Control
District and the City of Fountain Valley on their plans to install project
improvements along a portion of the Fountain Valley Flood Control Channel.
The OCWD/OCSD shall also enter into an agreement with the County for the
use of this flood control channel before any project construction begins.
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LU-5 Should the Option A alignment for the major conveyance pipeline be selected,
then the OCWD/OCSD shall contact Southern California Edison and the owner
of the Village Nurseries on their plans to install project improvements along
Garfield Avenue.The OCWD/OCSD shall ensure that construction plans
provide for parking for and access to the Edison substation and nursery during
project construction activities.
LU-6 Should the option be selected of construction through River View Golf Course,
the OCWD/OCSD will negotiate a construction easement for construction of
project improvements prior to the construction of any improvements.
Compensation for business loss during project construction activities shall be
addressed in this agreement.
LU-7 The OCWD/OCSD will notify the planning agencies of all local jurisdictions
through which the major conveyance pipelines will pass,including the cities of
Fountain Valley,Costa Mesa,Santa Ana,Orange and Anaheim to provide for
coordination between these jurisdictions,the OCWD/OCSD and sponsors of
future proposed development.
LU-8 The OCWD/OCSD will notify the Union Pacific Railroad Company and the
SCRRA that project improvements will be installed under their railroads in the
Orange/Anaheim area.Railroad officials will be given a written project
construction schedule.
LU-9 The OCWD/OCSD will provide residents,business and industry owners
adjacent to the streets and Santa Ana River levees where project
improvements are installed with a notice that project improvements will be
made adjacent to their homes,businesses or industries.The project
construction contractor will provide access to all residences,businesses and
industries impacted by project construction activities.
LU-lO The OCWD/OCSD shall coordinate with the cities of Fountain Valley,Costa
Mesa and Santa Ana Public Works Departments about their plans to construct
project improvements within select streets within these cities.They shall
obtain the necessary encroachment permits to temporarily relocate on street
parking and construct project improvements within city streets before any
project construction takes place.
LU-I 1 Should the option be selected to go around the River View Golf Course on
streets within the City of Santa Ana,then the OCWD/OCSD shall coordinate
construction plans with the City’s Public Works Department.They shall also
obtain the necessary encroachment permit to temporarily relocate on street
parking and construct project improvements within City streets before any
project construction takes place.
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LU-12 Should the Option C alignment for the major conveyance pipeline be selected,
the OCWD/OCSD shall notify the City of Fountain Valley that the project wilt be
constructed adjacent to the City’s Maintenance Yard and Police Training
Facility,providing the supervisor of this facility with a written project
construction schedule.
LU-I 3 The OCWD/OCSD will notify the planning agencies of all federal,state,county
and city jurisdictions through which the project will pass regarding the selected
project alternative,construction plans and schedules.This will also allow for
coordination between the local jurisdictions and the OCWD/OCSD regarding
traffic detours,public notification and coordination with sponsors of any
concurrent development along the project route.The OCWD/OCSD will also
work with these effected local jurisdictions and planning agencies to
incorporate measures to reduce impacts created by project construction
activities.These measures may include land closures,detour signs,flagman
and use of dust control measures such as water trucks.
LU-14 Final construction documents and a copy of the project plans will be made
available by the OCWD/OCSD to interested and impacted federal,state,
county and city agencies to ensure compatibility with future land use
scenarios.
LU-I 5 The OCWD/OCSD will notify appropriate County and city parks departments
where the project will traverse or be directly adjacent to a County or city park.
The parks departments shall be provided with a written schedule for
completion of project improvements adjacent to the park and the project
contractor will provide access to the park during project construction activities.
LU-I6 The OCWD/OCSD will notify appropriate school districts where the project will
potentially impact a school or access to a school.The school district shall be
provided with a written schedule for completion of project improvements
adjacent to the school and the project contractor will provide access to the
school during project construction activities.
LU-17 The OCWD/OCSD will negotiate construction easements with any affected
property owners.Compensation for relocation or temporary relocation of
property owners during project construction activities shall also be addressed
in this agreement if necessary.
LU-18 The OCWD/OCSD will provide residents and business owners adjacent to the
streets and Santa Ana River levees where project improvements are installed
with a written project construction schedule.The project construction
contractor shall provide access to these land uses during project construction
activities.
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B.SOCIOECONOMIC/GROWTH INDUCEMENT
The Groundwater Replenishment System does not result in impacts related to
population,housing and/or employment that have not been accounted for by SCAG in
its regional growth forecasts.Therefore,no mitigation is required.
C.GEOLOGY
Conditions and other measures applicable to the Proposed Action that would mitigate
for impacts to Geology are:
G-I The OCWD/OCSD will ensure that all structures for the Groundwater
Replenishment System,including the treatment,conveyance and Water
Factory 21/expansion of the Seawater Intrusion Barrier components,are
designed and constructed in compliance with current engineering practices,
including the Uniform Building Code and all applicable seismic engineering
guidelines.
D.WATER RESOURCES
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Water Resources are:
SURFACE WATER/FLOODING
SW-I The OCWD/OCSD will coordinate with the U.S.Army Corps of Engineers
(ACOE)on their plans to install Groundwater Replenishment System
improvements along and within the Santa Ana River.A copy of all project
plans shall be submitted to the ACOE for review and approval before any
project construction begins.
SW-2 The OCWD/OCSD will coordinate with the Orange County Flood Control
District on their plans to install project improvements under and along the
Santa Ana River.A copy of all project plans shall be submitted for review and
approval before any project construction begins.Work on the agreement shall
commence prior to final design of the Groundwater Replenishment System.
The OCWD/OCSD shall also enter into an agreement with the County for use
of the Santa Ana River and the Carbon Canyon Diversion Channel before any
project construction begins.The agreement shall address any economic loss
to the District during the construction of project improvements.
SW-3 Should major conveyance pipeline Option C be selected,the OCWD/OCSD
will coordinate with the Orange County Flood Control District on their plans to
install improvements within or along a portion of the Fountain Valley Flood
Control Channel.The OCWD/OCSD shall also enter into an agreement with
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the County for the use of this flood control channel before any project
construction begins.
SW-4 All Groundwater Replenishment System facilities proposed to be constructed
within or adjacent to the Santa Ana River or other flood control channels,or
will be construct across a flood control channel,shall be constructed during the
dry season (normally April through December).Flood control facilities
disturbed by system construction shall be fully restored to their original design
condition prior to the onset of the rainy season (October 15)so that the flood
control capacity of the affected OCFLD facilities are not comprised.
SW-5 Any pipeline constructed in the bottom or levees of flood control facilities shall
be designed in a manner which protects them from undermining or scour due
to flows in the channel.
SW-6 A Section 404 of the Federal Clean Water Act Permit shall be required for
construction of any Groundwater Replenishment System improvements within
the Santa Ana River.
SW-7 Best Management Practices,including sandbagging,manufactured channels
or swales,diversion velocity dissipators,desilting basins,detention/retention
ponds shall be used to prevent sedimentation from the construction of the
Groundwater Replenishment System.
SW-8 Release of treated water from the Groundwater Replenishment System to the
Santa Ana River shall occur only in event of an extreme emergency.
SW-9 The Groundwater Replenishment System shall comply with the requirements of
the state non-point NPDES program.
GROUNDWATER
GW-1 Should modeling and field studies indicate that any production wells are within
the minimum distance and travel time criteria for proximity to reclaimed water
recharge or injection,these wells shall be abandoned or limited to approved
non-potable uses.Wells which are abandoned shall be replaced by new wells
constructed outside to the area of influence.
GW-2 The OCWD/OCSD will coordinate with the Orange County Flood Control
District on their plans to install project improvements under the Santa Ana
River and the Greenville-Banning Flood Control Channel and the east and
west River levees.A copy of all project plans shall be submitted to the OCFCD
for review and approval before any project construction takes place.The
OCWD/OCSD shall also enter into an agreement with the County of Orange
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for use of the Santa Ana River and Greenville-Banning Flood Control Channel
before any project construction begins.
MARINE ENVIRONMENT
No impacts to the beneficial uses of ocean waters are expected to occur as a result the
proposed Groundwater Replenishment System or its alternatives.Therefore,no
mitigation is required.The OCSD will continue to implement their existing source
control monitoring programs to detect any changes in the influent and effluent quality
which could impact regulatory compliance.
E.AIR QUALITY
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Air Quality are:
AQ-1 Construction Contractors shall use low emission mobile construction
equipment to reduce the release of undesirable emissions.Construction
equipment shall use low sulfur fuels and shall be maintained in proper tune.
Electric power shall be used to the extent feasible.
AQ-2 Construction Contractors shall develop a trip reduction plan to achieve a 1.5
average vehicle ridership for construction employees.
AQ-3 Construction Contractors shall water active grading sites at least twice a day,
and clean appropriate construction equipment in the morning and/or evening to
reduce particulate emissions to reduce the release of fugitive dust.
AQ-4 Construction Contractors shall,as necessary,wash truck tires leaving the site
to reduce the amount of particulate matter transferred to paved streets as
required by SCAQMD Rule 403.
AQ-5 Construction Contractors shall spread soil binders on site,unpaved roads and
parking areas.Ground cover shall be reestablished on construction sites
through seeding and watering on portions of the site that will not be disturbed
for two months or more in order to reduce the release of fugitive dust.
AQ-6 Construction Contractors shall sweep on and off site streets if silt is carried
over to adjacent public thoroughfares,as determined by the City Engineers in
the affected jurisdictions to reduce the amount of particulate matter on public
streets.
AQ-7 Construction Contractors shall limit traffic speeds on all unpaved road surfaces
to 15 miles per hour or less in order to reduce the release of fugitive dust.
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AQ-8 Construction Contractors shall suspend grading operations during first and
second stage smog alerts and suspend all grading operations when wind
speeds (as instantaneous gusts)exceed 25 miles per hour.
AQ-9 Construction contractors shall develop a traffic plan to minimize traffic flow
interference from construction activities.
AQ-1O During the project facility design stage,improve the thermal integrity of the
buildings and reduce the thermal load with automated time clocks or occupant
sensors.
F.TRANSPORTATION
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Transportation are:
TR-1 Where construction activities impact public roads,the contractor shall ensure
that one clear lane of traffic will be maintained at all times to facilitate public
traffic circulation and emergency vehicle access.
TR-2 The construction contractor will be responsible for preparing adequate detour
and access plans to ensure the safe movement of vehicles and pedestrians
during the construction period.These plans must ensure access to private
property at all times.
TR-3 The construction contractor will be responsible for seeking approval of detour
and access plans by the public works department in whose jurisdiction
construction work is scheduled.
TR-4 The construction contractor shalt ensure that police,fire,transit and other
public agencies who may be impacted by roadway detours or street closure,be
advised prior to initiating construction activities.
TR-5 The construction contractor shall obtain a Public Work Permit from the City of
Fountain Valley for the development of any Groundwater Replenishment
System facilities in City street rights-of-way.The construction contractor shall
comply with all conditions set forth in the permit e.g.,hours of operation,lane
closures,trench length and pavement replacement etc.
G.BIOLOGICAL RESOURCES
No significant impacts to biological resources will result since construction will occur in
areas which are already disturbed by urban development,flood control,groundwater
recharge,maintenance or in non native and/or ornamental landscaping conditions.
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H.ENERGY AND MINERAL RESOURCES
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for Energy impacts are:
EM-I Project design and construction shall consider energy efficiency as an
important factor in the selection of equipment,including treatment processes,
lighting,heating and air conditioning equipment.
EM-2 Project design shall incorporate the use of variable speed pumps to optimize
energy use.
There are no significant impacts on mineral resources that require mitigation.
I.HAZARDS /OF UPSET
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Hazards and Risks of Upset are:
HZ-I The OCWD and OCSD shall properly site,design,operate and maintain
sodium hypochlorite storage tanks so as to minimize the potential for sudden
releases in the event of a tank failure caused by seismic events or other
reasons in the project area.At a minimum the design of the tanks shall
conform to standards and codes of the State of California and local
jurisdictions affected by the project.
HZ-2 The OCWD and OCSD shall ensue that the proposed pipeline features,
including pumping stations,recharge basins and water treatment facilities shall
be designed,constructed,operated and maintained according to the most
appropriate seismic standards and guidelines.At a minimum the design of the
pipelines shall conform to standards and codes of the State of California and
local jurisdictions affected by the project.
HZ-3 An adequate seismic Emergency Response Plan shall be prepared by;the
OCWD and OCSD for each feature of the Proposed Project including pipeline
segment and injection wells.The plan shall be approved by local agencies
prior to operation of each project phase.
HZ-4 An adequate Emergency Response Plan shall be developed by;the OCWD
and OCSD and approved by appropriate agencies to address disinfectant
chemicals and other hazardous materials which will be used,stored and/or
transported in association with the construction and operation of the Proposed
Project.
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HZ-5 Prior to the issuance of grading permits,the OCWD and/or OCSD shall be
required to submit tot he Cities of Fountain Valley,Huntington Beach and
Costa Mesa a preliminary environmental site assessment which addresses the
potential for site contamination from land uses on and adjacent to the
construction areas.If potential contamination issues are identified during the
preliminary site assessment,OCWD and/or the OCSD shall be required to
conduct additional investigation and remediation as required by the
jurisdictional state or local agency.
HZ-6 Any use of hazardous materials on the Propose Project site must be conducted
in accordance with applicable federal,state and local regulations.
HZ-7 The OCWD shall develop an emergency response plan to address major
release of chemicals used on the site.The emergency response plan shall be
approved by the City of Fountain Valley Fire Department and Orange County
Fire Department Hazardous Materials Response Units.
J.NOISE
Conditions and other measures applicable to the Groundwater Replenishment System
project that would mitigate for impacts to Noise are:
N-I The Construction Contractor shall be required to adhere to all Noise Ordinance
provisions of the cities of Fountain Valley,Costa Mesa,Santa Ana,Orange,
Anaheim,Huntington Beach and the County of Orange.Additionally,noisy
construction within 500 feet of existing homes shall be limited to the hours of
7a.m.and 7 p.m.on weekdays,7 a.m.to 6 p.m.on Saturdays and not at any
time on Sunday or Federal holidays.
N-2 Barriers shall be installed around the noise sources or directly between the
construction area and the nearest homes to shield these residents from direct
noise exposure from the construction activities.The height of the barriers is
crucial in terms of effectiveness,the higher the barrier the more the more the
noise reduction.Types of shielding include leaded blankets,an acoustic
blanket,or several layers of plywood.
N-3 Mufflers shall be used on all construction equipment.
N-4 Construction techniques designed to reduce noise shall be implemented where
feasible.Loud equipment shall not be separated and not grouped in one
location.Areas reserved for testing and fixing equipment shall be placed away
from sensitive receptors.
N-5 A detailed noise control plan shall be required to determine the need for any
additional specific noise mitigation measures at the advanced water treatment
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plant site.The plan shall include post-construction monitoring to determine if
the plan’s noise goals have been met.
N-6 The construction contractor shall coordinate with the Santa Ana Public Works
Agency,before any final haul routes and construction study areas for the
Groundwater Replenishment System facilities are established.Changes in
proposed haul routes and construction study areas shall be made is requested
by the Public Works Agency.
N-7 “Prior to the commencement of construction and ongoing during construction,
property owners/residents/businesses within and adjacent to construction
activity shall be notified of the specific construction activity and associated
schedule.Additionally,signs shall be posted at strategic locations within the
Project area,specifically within the city limits of Anaheim;easily visible at all
times during construction.The notifications and signs shall identify the
address,“hotline”number,and name of designated person to contact for the
purpose of responding to questions or complaints during the construction
period.The notifications and signs shall also identify the hours of permissible
construction work and estimated duration.
N-8 Ongoing during construction,relative to construction activities in the City of
Anaheim,construction noise shall be limited to the City of Anaheim’s Sound
Pressure Levels Ordinance (Chapter 6.7 of The Anaheim,Municipal Code).”
K.PUBLIC SERVICES
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Public Services are:
PS-I All school district and private schools affected by construction activities will be
notified of construction schedules to lessen potential impacts to instructional
and transportation services.Ample time will be provided so affected schools
can prepare and plan for possible disruptions caused by project construction.
PS-2 Construction contractors shall ensure that adequate barriers will be
established to prevent pedestrians from entering open trenches of an active
construction area.Warnings shall also be posted sufficient distances from the
work area to allow pedestrians to cross the street at controlled intersections
rather than having to jaywalk.
PS-3 At the end of the work day,the construction contractors shall ensure that the
work area has been secured to prevent pedestrians from walking into open
trenches or other potentially dangerous environments.Measures may include
covering the trenches and/or installing temporary fencing and safety lights.
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PS-4 Construction contractors shall be responsible for providing appropriate security
measures,including the provision of security guards,for all equipment staging
and/or storage areas needed for the project.
PS-5 Pipeline construction contractors shall coordinate construction activities with
local public transit providers prior to start of work.
PS-6 To reduce the potential of inconveniencing patrons reliant on unscheduled bus
or paratransit services,construction contractors shall provide tow week’s
notice to patrons in construction areas which could be affected by reduced
transit accessibility.
PS-7 The OCWD and OCSD shall keep all local police and fire jurisdictions abreast
of construction schedules.
PS-8 Pipeline construction contractors shall coordinate construction timing with local
refuse companies to ensure timely pickup of business and residential refuse.
Coordination shall continue as frequently as necessary to maintain adequate
public service.
PS-9 Construction contractors shall dispose of construction refuse at approved
disposal locations.L Contractors shall not be permitted to dispose of
construction debris in residential or business containers.
L.UTILITIES AND SERVICE SYSTEMS
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Utilities and Service Systems are:
U-I The OCWD and OCSD shall coordinate with all potentially affected utility
companies and jurisdictions to determine which utility lines and/or facilities will
require relocation or abandonment and replacement.This information shall be
made available to all applicable construction contractors prior to beginning
work on the Groundwater Replenishment System facilities.
U-2 The construction contractor shall coordinate with all potentially affected utility
companies and jurisdictions to determine the exact location of all underground
utilities prior to doing any work or taking action which could damage such
facilities or interfere with their operations.The construction contractor shall
protect all existing utility lines and associated substructures from damage
unless specifically noted on the plans.
U-3 Temporary replacement of utility lines will be constructed by the contractor
prior to disturbing existing lines so that disruption is only momentary.This
process shall be used during connection and later disconnection of utility lines.
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U-4 All utilities which cross the pipeline trench will be protected in place,unless
otherwise indicated for relocation on the project plans.The contractor will be
required to notify the utility owner and Underground Service Alert (DlGAlert)48
hours in advance of the construction crossing and coordinate the construction
schedule with the utility service providers.Where indicated on the plans,the
contractor will provide appropriate means to support utilities which lie within
excavated areas and which are not self-supporting.
U-5 The alignment and profile of the pipeline will be selected by OCWD and OCSD
to minimize interference with existing sanitary sewer laterals and collection
lines.The construction specifications will require that all utilities including
sewer laterals and mains be protected in place during construction and service
maintained.Where sewer lines are damaged,specifications will require that
they be repaired prior to certification of that contract’s completion.Service can
be maintained by repairing the damaged sewer immediately and supporting the
repaired sewer during construction or by placing a temporary pipe across the
excavation and replacing it with permanent sewer pipe at the completion of
construction of the conveyance line.
Where interference is unavoidable,the sewer lines will be relocated and
placed in service before commencing construction of the conveyance line.All
new and relocation work shall provide separation of water and sewer lines
conforming to State Health Department regulations.
U-6 Should water and/or sewer lines need to be relocated within the area,OCWD
and OCSD will coordinate all necessary actions with the affected provider in
advance of those activiti~s.The law protects existing utilities in place at the
time of new construction by requiring the new utility;to pay for;the cost of
relocation.
U-7 The OCWD and OCSD will coordinate with Southern California Edison and the
County of Orange to ensure that electrical power facilities will meet the
construction and operation schedule.
U-8 The construction contractor will conduct and complete all work on flood control
channels during the dry season so that the capacity;of the channels to carry
flood water during the wet season is not hindered.
U-9 The OCWD and OCSD shall investigate all available alternatives,then select
the best method of solids disposal and reduction of solid waste stream as
required in the California Integrated Waste Management Act prior to the start
of construction.
U-1O The OCWD and OCSD shall coordinate with the Orange County Planning &
Development Services Department (Orange County Flood Control District)to
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ensure compatibility;and joint use feasibility with existing and future projects.
Plan approval will also be required by the U.S.Army Corps of Engineers
requisite to County approval.
U-Il The OCWD and OCSD shall obtain the appropriate encroachment permit(s)
from all affected property owners and responsible agencies.Permits will be
obtained from CalTrans,the Orange County Planning &Development Services
Department (Orange County Flood Control District),the Army Corps of
Engineers,the County of Orange,the cities of Anaheim Costa Mesa,Fountain
Valley,Garden Grove,Huntington Beach,Orange,Southern Pacific Railroad,
Atchison,Topeka,&Santa Fe Railroad,industrial park (private),River View
Golf Course and,if applicable,the Mesa Verde Golf Course prior to start of
work upon their land.
M.AESTHETICS/LIGHT AND GLARE
Conditions and other measures applicable to the Groundwater Replenishment System
project that would mitigate for Aesthetic impacts are:
AS-I Install a minimum 8’-12’wide landscape buffer on the OCWD site along Ward
Street and Ellis Avenue.Buffer planting shall include evergreen trees
(approximately 15’-20’on center;15 gallon and 24”box)plus shrubs (minimum
double staggered row)to soften views from the streets into the plant site.
AS-2 Provide compatible exterior architectural design treatments to pump stations,
UV building,GAG,MF and RO facilities and all other storage,office and visitor
center structures to be built on the treatment plant site.Designs should blend
well with existing office facilities onsite and surrounding uses.
AS-3 All onsite security lighting shall be directed away from adjacent residential,
business uses and away from the Santa Ana River right-of-way.
AS-4 Construction contractors shall be required to direct nighttime construction
lighting away from residential and institutional uses.
AS-5 Construction contractors shall be required to keep construction and staging
areas free of trash or other debris and to keep staging areas orderly.
AS-6 Contractors constructing the Seawater Intrusion Barrier pipeline shall be
required to restore the ground surface to original condition.
AS-7 If the final route for the major conveyance pipeline is though the River View
Golf Course,affected landscaping shall be restored.If trees with a diameter of
more than 6”are removed,they;shall be replaced at a ratio of 3 replacements
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for every one removed.If smaller trees are removed they shall be replaced at
a 1 to I ratio.Disturbed greens and rough shall be replanted.
AS-8 If the final route for the major conveyance pipeline is through the adjacent
neighborhood,construction contractors shall take extra care to avoid damage
to existing street trees.Damaged trees shall be treated to enhance their
survival,or replaced with large box specimens if survival cannot be assured.
N.CULTURAL RESOURCES
Conditions and other measures applicable to the Groundwater Replenishment System
project that would mitigate for impacts to Cultural Resources are:
PalentoloQical Resources
CR-I An Orange County Certified Paleontologist shall be retained to produce a
mitigation plan for the Groundwater Replenishment project.
CR-2 The paleontologist shall attend the pre-grading meeting to discuss the
monitoring,collecting and safety procedures for the project and shall supervise
the paleontologic monitoring during earth moving activities,including well
boring,in sensitive areas.
CR-3 Historic peat bog deposits are not considered paleontologic resources.
However,should peat bogs be found during project construction activities,the
area should be reviewed by a qualified archaeologist.The areas mapped as
Quaternary or Holocene Alluvium shall be monitored or a periodic basis to
insure older underlying sediments are not being penetrated.Artificial fill,
disturbed soils and rock and slopewash will not require monitoring.
CR-4 Screening of sediments shall also be conducted under the supervision of the
paleontologist during monitoring because many significant vertebrates remains
are small.Up to a six thousand pound matrix sample may be processed by
any;single locality as recommended in the Guidelines in the Society of
Vertebrate Paleontologists.
CR-5 The paleontological monitor shall have the authority to temporarily divert or
redirect grading to allow time to evaluate any exposed fossil material.
CR-6 During monitoring any scientifically significant specimens shall be properly
salvaged after evaluation by,and under the supervision of,the paleontologist.
During fossil salvage,contextual stratigraphic data shall also be collected.
This will include lithologic descriptions,localities plotted on a USGS 7.5’Series
topographic quadrangle,photographs and field notes.Specimens shall be
prepared to the point of identification,stabilized,identified and curated on a
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long term loan basis in a suitable repository that has a retrievable storage
system,such as the Interpretive Center at Ralph Clark Regional Park,an
Orange County facility;)which shall have the first right-of-refusal of the
collection,or the Los Angeles County Museum of Natural History.
CR-7 A final report shall be prepared at the end of earth moving activities and shall
include an itemized inventory of recovered fossils and appropriate stratigraphic
and locality data.This report shall be sent to the Lead Agency,signifying the
end of mitigation.Another copy shall accompany any recovered fossils,along
with field logs and photographs,to the designated repository.
CR-8 Full time monitoring shall be conducted during earth moving activities,
including well drilling,in a Pleistocene deposits.
Archaeolociical/Historical Resources
CR-9 A focused field survey of archaeological and historic resources shall be
conducted before construction of the conveyance pipeline and new injection
wells and pipeline to serve the wells as selected by the OCWD for the
Groundwater Replenishment System.
CR-I 0 For geotechnical testing along any proposed pipeline route,an Orange County
certified archaeologist shall be retained to observe their excavations and to
halt work if significant remains are found.Geotechnical testing includes
trenches,pot holes and core boring.An archeologist shall be notified at least
24 hours ahead of any geotechnical testing in order to meet the testing
schedule.
CR-I I An Orange County Certified archaeologist shall be present at the program pre
grading meeting to discuss the monitoring,collecting and safety procedures for
the project.At that time,the archaeologist shall review the construction plans
and ensure that no construction activity;will affect identified archaeological or
historic resources.
CR-12 During program grading activities,an Orange County Certified Archaeologist
shall be retained to conduct full-time monitoring in archaeologically sensitive
areas to observe and retrieve any buried artifacts that may be uncovered.
CR-13 If human remains are found during the excavation the steps listed below from
the Native American Graves Protection Act guidelines and State law shall be
followed:
•Halt the work in the immediate area;
•Leave the remains in place;
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•Contact the Orange County Water District,project personnel and the
Orange County Corner;
•The remains are not to be removed until a representative of the Coroner’s
office reviews the remains in the field;
•If the Coroner determines that the remains are prehistoric,the Coroner
shall contact the Native American Heritage Commission and the most
likely descendent from the Native American Community is to be informed;
and
•The final deposition of remains shall be coordinated by representatives of
the property owner and the most likely descendent.
CR-14 If prehistoric artifacts or a buried deposit is uncovered,the Orange County
certified archaeologist shall temporarily halt construction activities for the
immediate area until the archaeologist can evaluate the significance of the
find.Implementation of a recovery program would follow,if the remains are
determined potentially eligible to the National Register.
CR-15 A final monitoring report,including an itemized inventory and pertinent field
data,shall be sent to the OCWD/OCSD as well as copies of the report to the
Archaeological Information Center at the University of California,Los Angeles,
and to the County of Orange Public Facilities &Resources Department-
Harbors Beaches &Parks Division.
CR-I 6 Any recovered artifacts shall be properly collected with locations plotted on a
USGS 7.5’topographic quadrangle,with photographs and field notes of the
find.Artifacts will be identified,and artifact catalog prepared,and artifacts
stabilized for curation.Any recovered artifacts shall be offered,on a first right-
of-refusal basis,to a repository with a retrievable collection system and an
educational and research interest in the materials.The Anthropology Museum
at California State University,Fullerton would be an appropriate repository to
receive any artifacts collected in the study area.
0.RECREATION
Conditions and other measures applicable to the Groundwater Replenishment System
that would mitigate for impacts to Recreation are:
R-1 The Orange County Water District and Orange County Sanitation District will
provide a written construction schedule to all the cities having parks adjacent
to the construction zone and to the County of Orange advising when project
construction may impact park and recreation facilities within their jurisdictions.
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•The construction schedule will also be provided to the Mesa Verde and River
View golf courses.
R-2 The Orange County Water District and Orange County Sanitation District will
negotiate for construction and access easements and encroachment permits
with the operators of the River View Golf Course and if applicable,the Mesa
Verde Golf Course,an with entities owning land in the area of the Groundwater
Replenishment System.Landowners and responsible agencies include
CalTrans,Orange county Flood control District,U.S.Army Corps of Engineers,
County of Orange,the cities of Anaheim,Fountain Valley,Garden Grove,
Huntington Beach and Orange,Southern Pacific Railroad,Atchison,Topeka &
Santa Fe Railway and a private industrial park.Compensation for business
loss shall be addressed in the agreements.
R-3 The Orange County Water District and Orange County Sanitation District will
prepare will prepare a plan to detour users of the Santa Ana River Bikeway
around the construction areas so that the paved trail remains open during
construction.The Districts shall work with the County of Orange and local
bicycle group on the preparation of a trail detour plan.
At a minimum,the following County Departments shall be contacted to help
prepare trail detour plan:
•Public Facilities and Resources Department,Harbors,Beaches and Parks
Department
•Planning and Development Services Department.At a minimum,the
following local bicycle group shall be contacted.
•Orange County Bicycle Coalition,630 S.Glassel Street,Suite 100,Orange,
CA 91666,(714)288-9130.
The final trail detour plan shall be submitted to the above groups for review and
comment.
R-4 The construction contractor will ensure that adequate barriers are established
to prevent recreational facility users from entering the active project
construction area.
R-5 Following construction,the construction areas in golf courses and the Santa
Ana River Trail will be restored to their original condition and re-landscaped as
appropriate.
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P.ENVIRONMENTAL JUSTICE
There are no adverse environmental justice impacts that will arise from implementation
of the Groundwater Replenishment System.Therefore,no mitigation measures have
been proposed for this project.
Q.INDIAN TRUST ASSETS
No impacts will be created on Indian Trust Assets by construction of facilities proposed
as part of the Groundwater Replenishment System.Therefore,no mitigation measures
are proposed.
SECTION 7 The Districts hereby adopt the following mitigation monitoring and
reporting program to ensure implementation of the mitigation measures described in
Sections 3,4,and 6.
A.Prior to design and construction,the General Manager of Water District,shall
appoint an Environmental Monitor responsible for coordinating mitigation
monitoring and reporting activities.
B.The Environmental Monitor shall review the design Project and either certify
that the facility design complies with EIR mitigation measures,or recommend
modifications necessary to achieve such compliance.In addition,prior to
obtaining bids for construction of Project,the Environmental Manager shall
review the bid documents and certify compliance with applicable mitigation
measures.
C.The Environmental Monitor shall design a checklist to demonstrate
compliance with mitigation measures in the field during construction of
Master Plan facilities.The Project manager shall assign staff responsibilities
for competing this checklist,and certify compliance with mitigation measures
during and after construction of Master Plan projects.
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D.The Project Manager shall prepare reports to the General Manager on the
status of mitigation measure implementation.
The Mitigation Monitoring and Reporting Plan is appended to this Resolution as
ATTACHMENT “B”.
SECTION 8 The Board of Directors of District has balanced the benefits of
Project against its unavoidable environmental risks in determining whether to approve
Project.The Board of Directors hereby find that the occurrence of the unavoidable
significant environmental effects identified in the Final Program EIR and listed in
Sections 4 and 5 is acceptab’e for the following reasons:
A.The Project will provide high quality drought-proof water for the existing
population and ongoing development approved by local governments after
required environmental reviews.The District is a single-purpose agency with
the responsibility to collect,treat and dispose of wastewater generated within
the District’s service area.
B.The Project is necessary to meet the following objectives:to provide an
environmentally sound,high quality water supp’y that reduces the effect of
drought on the service area;to comply with all federal and state regulatory
standards applicable to the treatment and reuse of wastewater;to encourage
wastewater flow reduction through water conservation and reuse;to reclaim
wastewater for beneficial reuse and encourage development of markets for
reclaimed wastewater.
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SECTION 9 That the Board Secretary is authorized and directed to file the
Notice of Determination and any other documents in accordance with the requirements
of CEQA and the District’s CEQA procedures.
PASSED AND ADOPTED at a regular meeting held March 24,1999.
ATTEST:
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H:~wp.dta\admin\BS\ResoIutions\1 999\OCSD99-O1 .docO3/17199 I 0:06 AM
Board
ATTACHMENT “A”
Attachment “A”to Resolution 99-01 consists of the Final Program
Environmental Impact Report which is in two volumes,the Draft and the
Final EIR
Mitigation Monitoring Plan
Groundwater Replenishment System Attachment B
MITIGATION MONITORING AND REPORTING PROGRAM
GROUNDWATER REPLENISHMENT SYSTEM
INTRODUC11ON
Public Resources Code Section 21081.6 requires public agencies to adopt programs to
monitor and report on the implementation of mitigation measures that have been
adopted to avoid or reduce environmental impacts of projects that agencies have
approved in accordance with the California Environmental Quality Act (CEQA).
Consequently,a Mitigation Monitoring and Reporting Program have been developed for
Use by the Orange County Water District (OCWD)and Orange County Sanitation
District (OCSD)for the Groundwater Replenishment System.
DEVELOPMENT OF THE MI11GA11ON MONITORING PROGRAM
The basic elements of the Mitigation Monitoring and Reporting Program are the
mitigation measures identified by each impact category addressed in Section 3.0 of the
Program EIRJTier I EIS and the refinements,changes or additions to those measures
which resulted from the Response to Comments received on the E!R/EIS.The
development of the program was based on the following procedures necessary to
initiate and complete the monitoring process.
•Identification of the specific mitigation measures proposed for the project from
Section 3.0 of the Program EIR and Tier I EIS and refinements,changes or
additions to those measures in the Response to Comments report/Final EIRIEIS.
•Identification of the key periods and events in the project implementation schedule.
•Identification of the key personnel and agencies responsible for environmental
monitoring.
•Monitoring of the implementation of the mitigation measures and documentation that
the measures have been properly and thoroughly implemented.
•Development of the written document on the implementation of all the mitigation
measures,identification of any areas of non-compliance,and proposed activities to
bring the project into compliance with the mitigation monitoring program.
AUTHORITY TO REQUIRE AND ENFORCE A MI11GA11ON MONITORING PROGRAM
The OCWD and OCSD has the authority to require and enforce the provisions of
California Resource Code Section 21081.6.The Groundwater Replenishment System,
is a joint project of the OCWD and the OCSD and these Districts will be responsible for
approving the Mitigation Monitoring and Reporting Program and for preparing the
written report documenting the implementation of System mitigation measures.
—1—
Mitigation Monitoring Plan
Groundwater Replenishment System Attachment B
Table I summarizes the mitigation measures which have been adopted for the project,
specifies the timing for implementation of each measure and identifies the responsible
parties for ensuring implementation and the satisfactory completion of each measures.
The procedures for implementing the Mitigation Monitoring and Reporting Program are:
MonitonnQ Procedures
1.An Environmental Monitor,appointed by OCWD/OCSD,will be
responsible for coordinating review of project plans and activities,
construction sites and/or operations to ensure that the mitigation
measures are properly and thoroughly implemented through the course of
the project.
2.Written documentation that each mitigation measure in Table I has been
implemented will be prepared.This documentation can be on a
OCWDIOCSD mitigation monitoring checklist or a similar form that clearly
indicates the timing or schedule for implementation,whether the measure
has,in fact,been implemented,or in the case of measures that are
ongoing,that a process has been developed to ensure continued
implementation of the measure.
ReDorting Procedures
I.The Environmental Monitor appointed by the OCWD/OCSD on this
project will be responsible for periodically reviewing the program in Table
I with the OCWDIOCSD Environmental Compliance Advisor.
2.The Environmental Monitor will prepare a written report for the
OCWD/OCSD documenting the completion of the implementation of all
the mitigation measures consistent with the schedule and agency
approvals indicated in Table I.For those measures not implemented or
that do not fully comply with mitigation measures included in Table 1,an
explanation of the areas of noncompliance will be prepared,including a
proposal to bring those elements of the project into compliance with the
Mitigation Monitoring and Reporting Program.
The final report on the Mitigation Monitoring and Reporting Program will be kept
on file at the following addresses
Orange County Water District Orange County Sanitation District
10500 Ellis Avenue 10844 Ellis Avenue
Fountain Valley,CA 92708 Fountain Valley,CA 92708
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Mitigatlo itoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
Land_Use_and Planning
LU-i The OCWD/OCSD will coordinate ~ith the U.S.Army /Corps of Engineers (ACOE)on their plans to install
project improvements along and within the Santa Ana River.A copy of all project plans shall be submitted to
the ACOE for review and approval before_any project construction begins.
OCWD/OCSD
ACOE
Pre-Construction
LU-2 The OCWD/OCSD will coordinate with the Orange County Flood Control District on their plans to install
project improvements under and along the Santa Ana River.A copy of all project plans shall be subniitted for
review and approval before any project construction begins.The OCWDIOCSD shall also enter into an
agreement with the County for use of the Santa Ana River and the Carbon Canyon Diversion Channel before
any project construction begins.The agreement shall address any economic loss to the Flood Control District
during the construction of project improvements.
OCWD/OCSD
OCFCD
Pre-Construction
LU-3 The OCWDIOCSD will coordinate with CalTrans District 12 on their plans to install project improvements
under the San Diego,Santa Ana,Garden Grove Orange and Riverside Freeways.The OCWD/OCSD will also
obtain the necessaiy CalTrans Encroachment Permit before any project construction begins under any of these
freeways.
OCWDIOCSD
CalTrans District 12
Pre-Construction
LU-4 Should the Option C alignment for the major conveyance pipeline be selected,the OCWD/OCSD will coordinate
with the Orange County Flood Control District and the City of Fountain Valley on their plans to install project
improvements along a portion of the Fountain Valley Flood Control Channel.The OCWD/OCSD shall also
enter into an agreement with the County for the use of this flood control channel before any project construction
begins.
OCDW/OCSD
OCFCD
City of Fountain Valley
Pre-Construction
LU-5 Should the Option A alignment for the major conveyance pipeline be selected,then the OCWD/OCSD shall
contact Southern California Edison and the owner of the Village Nurseries on their plans to install project
improvements along Garfield Avenue.The OCWD/OCSD shall ensure that construction plans provide for
parking for and access to the Edison substation and nurseiy during project construction activities.
OCWD/OCSD
Southern California
Edison
Village Nurseries
Pre-Construction
LU-6 Should the option be selected of construction through River View Golf Course,the OCWD/OCSD will negotiate
a construction easement for construction of project improvements prior to the construction of any improvements.
Compensation for business loss during project construction activities shall be addressed in this agreement.
OCWD/OCSD
River View Golf
Pre-Construction
LU-7 The OCWD/OCSD will notify the planning agencies of all local jurisdictions through which the major
conveyance pipelines will pass,including the cities of Fountain Valley,Costa Mesa,Santa Ana,Orange and
Anaheim to provide for coordination between these jurisdictions,the OCWD/OCSD and sponsors of future
proposed development.
.
OCWD/OCSD
Cities of Fountain
Valley,Costa Mesa,
Santa Ana,Orange,
Anaheim
Pre-Construction
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Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Responsible
.
Mitigation Measures Party(s)Timing
LU-8 The OCWD/OCSD will notify the Union Pacific Railroad Company and the SCRRA that project improvements OCWD/OCSD Pre-Construction
will be installed under their railroads in the Orange/Anaheim area.Railroad officials will be given a written UPRR
project construction schedule.SCRRA
LU-9 The OCWD/OCSD will provide residents,business and industiy owners adjacent to the streets and Santa Ana OCWD/OCSD Pre-Construction
River levees where project improvements are installed with a notice that project improvements will be made
adjacent to their homes,businesses or industries.The project construction contractor will provide access to all
residences,businesses and industries impacted by project construction activities.
LU-b The OCWD/OCSD shall coordinate with the cities of Fountain Valley,Costa Mesa and Santa Ana Public Works OCWD/OCSD Pre-Construction
Departments about their plans to construct project improvements within select streets within these cities.They Fountain Valley,Costa
shall obtain the necessary encroachment permits to temporarily relocate on street parking and construct project Mesa and Santa Ana
improvements within city streets before any project construction takes place.Public Works
Department
LU-il Should the option be selected to go around the River View Golf Course on streets within the City of Santa Ana,OCWD/OCSD Pre-Construction
then the OCWD/OCSD shall coordinate construction plans with the City’s Public Works Department.They City of Santa Ana
shall also obtain the necessary encroachment permit to temporarily relocate on street parking and construct
project improvements within City streets before any project construction takes place.
LU-12 Should the Option C alignment for the major conveyance pipeline be selected,the OCWD/OCSD shall notify the OCWD/OCSD Pre-Construction
City of Fountain Valley that the project will be constructed adjacent to the City’s Maintenance Yard and Police City of Fountain Valley
Training Facility,providing the supervisor of this facility with a written project construction schedule.
LU-13 The OCWD/OCSD will notify the planning agencies of all federal,state,county and city jurisdictions through OCWD/OCSD Pre-Construction
which the project will pass regarding the selected project alternative,construction plans and schedules.This Federal,State,County
will also allow for coordination between the local jurisdictions and the OCWD/OCSD regarding traffic detours,
public notification and coordination with sponsors of any concurrent development along the project route.The
City Planning Agencies
OCWD/OCSD will also work with these effected local jurisdictions and planning agencies to incorporate
measures to reduce impacts created by project construction activities.These measures may include land
closures,detour signs,flagman and use of dust control measures such as water trucks.
LU-14 Final construction documents and a copy of the project plans will be made available by the OCWD/OCSD to OCWD/OCSD Pre-Construction
interested and impacted federal,state,county and city agencies to ensure compatibility with future land use Federal,State,County,During
scenarios.City Agencies Construction
Mitlgatio itoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
LU-15 The OCWD/OCSD will notify appropriate County and city parks departments where the project will traverse or
be directly adjacent to a County or city park.The parks departments shall be provided with a written schedule
for completion of project improvements adjacent to the park and the project contractor will provide access to the
park during project construction activities.
OCWD/OCSD
County and City Parks
Departments
Pre-Construction
During project
Construction
LU-16 The OCWD/OCSD will notify appropriate school districts where the project will potentially impact a school or
access to a school.The school district shall be provided with a written schedule for completion of project
improvements adjacent to the school and the project contractor will provide access to the school during project
construction activities.
OCWD/OCSD
School Districts
Pre-Construction
LU-17 The OCWD/OCSD will negotiate construction easements with any affected property owners.Compensation for
relocation or temporaly relocation of property owners during project construction activities shall also be
addressed in this agreement if necessaiy.
OCWD/OCSD
Affected Property!
Owners
Pre-Construction
During
Construction
LU-18 The OCWD/OCSD will provide residents and business owners adjacent to the streets and Santa Ana River
levees where project improvements are installed with a written project construction schedule.The project
construction contractor shall provide access to these land uses during project construction activities.
OCWD/OCSD
Affected Residents/
Businesses Owners
Socioeconomic/Growth Inducement
•None.
Geology
G-l The OCWD/OCSD will ensure that all structures for the Groundwater Replenishment System,including the
treatment,conveyance and Water Factory 21/expansion of the Seawater Intrusion Barrier components,are
designed and constructed in compliance with current engineering practices,including the Uniform Building
Cede and all applicable seismic engineering guidelines.
OCWDIOCSD Pre-Construction
Water Resources
SW-i The OCWD/OCSD will coordinate with the U.S.Anny Corps of Engineers (ACOE)on their plans to install
Groundwater Replenishment System improvements along and within the Santa Ana River.A copy of all project
plans shall be submitted to the ACOE for review and approval before any project construction begins.
OCWD/OCSD
ACOE
Pre-Construction
-è
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Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
SW-2 The OCWDIOCSD will coordinate with the Orange County Flood Control District on their plans to install
project improvements under and along the Santa Ana River.A copy of all project plans shall be submitted for
review and approval before any project construction begins.Work on the agreement shall commence prior to
final design of the Groundwater Replenislunent System.The OCWDIOCSD shall also enter into an agreement
with the County for use of the Santa Ana River and the Carbon Canyon Diversion Channel before any project
construction begins.The agreement shall address any economic loss to the Flood Control District during the
construction of project improvements.
OCWD/OCSD
OCFCD
County of Orange
Pre-Construction
SW-3 Should major conveyance pipeline Option C be selected,the OCWD/OCSD will coordinate with the Orange
County Flood Control District on their plans to install improvements within or along a portion of the Fountain
Valley Flood Control Channel.The OCWD/OCSD shall also enter into an agreement with the County for the
use of this flood control channel before any project construction begins.
OCWD/OCSD
OCFCD
Orange County
Pre-Construction
SW-4 All Groundwater Replenishment System facilities proposed to be constructed within or adjacent to the Santa Ana
River or other flood control channels,or will be constructed across a flood control channel,shall be constructed
during the diy season (normally April through December).Flood control facilities disturbed by system
construction shall be fully restored to their original design condition prior to the onset of the rainy season
(October 15)so that the flood control capacity of the affected OCFCD facilities are not compromised.
OCWD/OCSD
Construction Contractor
During
Construction
SW-5 Any pipeline constructed in the bottom or levees of flood control facilities shall be designed in a manner which
protects them from undermining or scour due to flows in the channel.
OCWD/OCSD Pre-Construction
SW-6 A Section 404 of the Federal Clean Water Act Permit shall be required for construction of any Groundwater
Replenishment System improvements within the Santa Ana River.
OCWD/OCSD
ACOE
Pre-Construction
SW-7 Best Management Practices,including sandbagging,manufactured channels or swales,diversion velocity
dissipators,desilting basins,detention/retention ponds shall be used to prevent sedimentation from the
construction of the Groundwater Replenishment System.
OCWD/OCSD
Construction Contractor
During
Construction
SW-8 Release of treated water from the Groundwater Replenishment System to the Santa Ana River shall occur only in
event of an extreme emergency.
OCWD/OCSD Post-Construction
SW-9 The Groundwater Replenishment System shall comply with the requirements of the state non-point source
NPDES program.
OCWD/OCSD Post-Construction
Groundwater
GW-l Should modeling and field studies indicate that any production wells are within the minimum distance and
travel time criteria for proximity to reclaimed water recharge or injection,these wells shall be abandoned or
limited to approved non-potable uses.Wells which are abandoned shall be replaced by new wells constructed
outside to the area of influence.
OCWD/OCSD Pre-Construction
During
Construction
Mitlgatio itorlng Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
GW-2 The OCWDIOCSD will coordinate with the Orange County Flood Control District on their plans to install
project improvements under the Santa Ana River and the Greenville-Banning Flood Control Channel and the
east and west River levees.A copy of all project plans shall be submitted to the OCFCD for review and approval
before any project construction takes place.The OCWD/OCSD shall also enter into an agreement with the
County of Orange for use of the Santa Ana River and Greenville-Banning Flood Control Channel before any
project construction begins.
OCWD/OCSD
OCFCD
County of Orange
Pre-Construction
Air Quality
AQ-1 Construction Contractors shall use low emission mobile construction equipment to reduce the release of
undesirable emissions.Construction equipment shall use low sulfur fuels and shall be maintained in proper
tune.Electric power shall be used to the extent feasible.
Construction Contractor During
Construction
AQ-2 Construction Contractors shall develop a trip reduction plan to achieve a 1.5 average vehicle ridership for
construction employees.
Construction Contractor Pre-Construction
AQ-3 Construction Contractors shall water active grading sites at least twice a day,and clean appropriate construction
equipment in the morning andlor evening to reduce particulate emissions to reduce the release of fugitive dust.
Construction Contractor During Construction
AQ-4 Construction Contractors shall,as necessary,wash truck tires leaving the site to reduce the amount of particulate
matter transferred to paved streets as required by SCAQMI)Rule 403.
Construction Contractor During Construction
AQ-5 Construction Contractors shall spread soil binders on site,unpaved roads and parking areas.Ground cover shall
be reestablished on construction sites through seeding and watering on portions of the site that will not be
disturbed for two months or more in order to reduce the release of fugitive dust.
Construction Contractor During Construction
~
AQ-6 Construction Contractors shall sweep on and off site streets if silt is carried over to adjacent public
thoroughfares,as determined by the City Engineers in the affected jurisdictions to reduce the amount of
particulate matter on public streets.
Construction Contractor During Construction
AQ-7 Construction Contractors shall limit traffic speeds on all unpaved road surfaces to 15 miles per hour or less in
order to reduce the release of fugitive dust.
Construction Contractor During Construction
AQ-8 Construction Contractors shall suspend grading operations during first and second stage smog alerts and
suspend all grading operations when wind speeds (as instantaneous gusts)exceed 25 miles per hour.
Construction Contractor During Construction
AQ-9 Construction contractors shall develop a traffic plan to minimize traffic flow interference from construction
activities.
Construction Contractor Pre-Construction
AQ-10 During the project facility design stage,improve the thermal integrity of the buildings and reduce the thennal
load with automated time clocks or occupant sensors.
OCWD/OCSD Pre-Construction
-7-
Mitigation Monitoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Patty(s)Timing
Transportation
TR-l Where construction activities impact public roads,the contractor shall ensure that one clear lane of traffic will
be maintained at all times to facilitate public traffic circulation and emergency vehicle access.
Construction Contractor During Construction
TR-2 The construction contractor will be responsible for preparing adequate detour and access plans to ensure the safe
movement of vehicles and pedestrians during the construction period.These plans must ensure access to private
property at all times.
Construction Contractor Pre-Construction
During Construction
TR-3 The construction contractor will be responsible for seeking approval of detour and access plans by the public
works department in whose jurisdiction construction work is scheduled.
Construction Contractor
City Public Works
Departments
Pre-Construction
TR-4 The construction contractor shall ensure that police,fire,transit and other public agencies who may be impacted
by roadway detours or street closure,be advised prior to initiating construction activities.
Construction Contractor
Local Police,Fire,
Transit,other Public
Agencies
Pre-Construction
TR-5 The construction contractor shall obtain a Public Work Permit from the City of Fountain Valley for the
development of any Groundwater Replenishment System facilities in City street rights-of-way.The construction
contractor shall comply with all conditions set forth in the permit e.g.,hours of operation,lane closures,trench
length and pavement replacement etc.
Construction Contractor
City of Fountain Valley
Pre-Construction
TR-6 Prior to commencing construction,the construction contractor shall submit a construction traffic plan for review
and approval by the City of Anaheim Public Works Department.The traffic plan shall include a truck-haul
route identifying the route that all construction and delivery trucks shall follow when delivering or hauling
materials to the site;location and number of flagmen that will be on-site to safely direct public traffic around
construction traffic;and,measures that will be incorporated into the project to protect pedestrians during the
project construction.The traffic plan shall also include measures to prevent conflicts with events at the
Arrowhead Pond of Anaheim and the Edison International Field of Anaheim.
Construction Contractor
City of Anaheim Public
Works Departments
Pre-Construction
TR-7 Prior to commencement of construction activities,any street or lane closure should be in accordance with State
of California Manual of Traffic Controls standards.Detailed detour plans must be submitted to the City of
Anaheim’s Traffic and Transportation Manager for review and approval.”
Construction Contractor
Anaheim Traffic and
Transportation Manager
Pre-Construction
Biological Resources
.None necessary.
Mitigatio itoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
Energy and Mineral Resources
EM-i Project design and construction shall consider energy efficiency as an important factor in the selection of
equipment,_including treatment processes,_lighting,_heating and air conditioning equipment.
OCWD/OCSD Pre-Construction
EM-2 Project design shall incorporate the use of variable speed pumps to optimize energy use.OCWD/OCSD Pre-Construction
Hazards!Risk of Upset
HZ-i The OCWD and OCSD shall properly site,design,operate and maintain sodium hypochlorite storage tanks so as
to minimize the potential for sudden releases in the event of a tank failure caused by seismic events or other
reasons in the project area.At a minimum the design of the tanks shall conform to standards and codes of the
State of California and local jurisdictions affected by the prqject.
OCWD/OCSD Pre-Construction
During
Construction
Post-Construction
HZ-2 The OCWD and OCSD shall ensue that the proposed pipeline features,including pumping stations,recharge
basins and water treatment facilities shall be designed,constructed,operated and maintained according to the
most appropriate seismic standards and guidelines.At a minimum the design of the pipelines shall conform to
standards and codes of the State of California and local jurisdictions affected by the project.
OCWD/OCSD Pre-Construction
During
Construction
Post-Construction
HZ-3 An adequate Seismic Emergency Response Plan shall be prepared by the OCWD and OCSD for each feature of
the Proposed Project including pipeline segment and injection wells.The plan shall be approved by local
agencies prior to operation of each project Phase.
OCWD/OCSD
Local Public Works!
Police/Fire Departments
Pre-Construction
HZ-4 An adequate Emergency Response Plan shall be developed by the OCWD and OCSD and approved by
appropriate agencies to address disinfectant chemicals and other hazardous materials which will be used,stored
and/or transported in association with the construction and operation of the Proposed Project.
OCWD/OCSD
Local Fire/Police
Departments
Pre-Construction
HZ-5 Prior to the issuance of grading permits,the OCWD and/or OCSD shall be required to submit to the Cities of
Fountain Valley,Huntington Beach and Costa Mesa a preliminary environmental site assessment which
addresses the potential for site contamination from land uses on and adjacent to the construction areas.if
potential contamination issues are identified during the preliminary site assessment,OCWDIOCSD shall be
required to conduct additional investigation and remediation as required by the jurisdictional state or local
agency.
OCWD/OCSD
Cities of Fountain Valley,
Huntington Beach,
Costa Mesa
Pre-Construction
HZ-6 Any use of hazardous materials on the project site must be conducted in accordance ~th applicable federal,state
and local regulations.
OCWD/OCSD
Construction Contractor
During Construction
Post-Construction
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Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
:
Mitigation Measures
Responsible
Party(s)Timing
HZ-7 The OCWD shall develop an emergency response plan to address major release of chemicals used on the site.
The emergency response plan shall be approved by the City of Fountain Valley Fire Department and Orange
County Fire Department Hazardous Materials Response Units.
OCWD
City of Fountain Valley
Fire Department
Orange County Fire
Department
Pre-Construction
Noise
N-i The Construction Contractor shall be required to adhere to all Noise Ordinance provisions of the cities of
Fountain Valley,Costa Mesa,Santa Ana,Orange,Anaheim,Huntington Beach and the County of Orange.
Additionally,noisy construction within 500 feet of existing homes shall be limited to the hours of 7 a.m.and 7
p.m._on weekdays,7 a.m.to 6 p.m._on_Saturdays and not at any time on Sunday or Federal_holidays.
Construction Contractor During
Construction
N-2 Barriers shall be installed around the noise sources or directly between the construction area and the nearest
homes to shield these residents from direct noise exposure from the construction activities.The height of the
barriers is crucial in terms of effectiveness,the higher the barner the more the noise reduction.Types of
shielding include leaded blankets,_an acoustic blanket,_or several layers of plywood.
Construction Contractor During Construction
N-3 Mufflers shall be used on all construction equipment Construction Contractor During Construction
N-4 Construction techniques designed to reduce noise shall be implemented where feasible.Loud equipment shall
not be separated and not grouped in one location.Areas reserved for testing and fixing equipment shall be
placed away from sensitive receptors.
Construction Contractor During Construction
N-5 A detailed noise control plan shall be required to determine the need for any additional specific noise mitigation
measures at the advanced water treatment plant site.The plan shall include post-construction monitoring to
determine if the plan’s noise goals have been met.
OCWD/OCSD
Construction Contractor
Pre-Construction
Post-Construction
N-6 The construction contractor shall coordinate with the Santa Ana Public Works Agency,before any final haul
routes and construction study areas for the Groundwater Replenishment System facilities are established.
Changes in proposed haul routes and construction study areas shall be made is requested by the Public Works
Agency.
Construction Contractor
Santa Ana Public Works
Agency
Pre-Construction
.
Mitigatlo itoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Responsible
Mitigation Measures Party(s)Timing
N-7 Prior to the commencement of construction and ongoing during construction,property owners/residents/OCWD/OCSD Pre-Construction
businesses within and adjacent to construction activity shall be notified of the specific construction activity and Construction Contractor
associated schedule.Additionally,signs shall be posted at strategic locations within the Project area,specifically
within the City limits of Anaheim;easily visible at all times during construction.The notifications and signs
shall identify the address,“hotline”number,and name of designated person to contact for the purpose of
responding to questions or complaints during the construction period.The notifications and signs shall also
identify the hours of permissible construction work and estimated duration.
N-8 Ongoing during construction,relative to construction activities in the City of Anaheim,construction noise shall Construction Contractor Dunng
be limited to the City of Anaheim’s Sound Pressure Levels Ordinance (Chapter 6.7 of The Anaheim,Municipal Construction
Code).
Public Services
PS-i All school district and private schools affected by construction activities will be notified of construction OCWD/OCSD Pre-Construction
schedules to lessen potential impacts to instructional and transportation services.Ample time will be provided Local School Distncts/
so affected schools can prepare and plan for possible disruptions caused by project construction.Pnvate Schools
PS-2 Construction contractors shall ensure that adequate barriers will be established to prevent pedestrians from Construction Contractor During Construction
entering open trenches of an active construction area.Warnings shall also be posted sufficient distances from
the work area to allow pedestrians to cross the street at controlled intersections rather than_having to jaywalk.
PS-3 At the end of the work day,the construction contractors shall ensure that the work area has been secured to Construction Contractor During Construction
prevent pedestrians from walking into open trenches or other potentially dangerous environments.Measures
may include covering the trenches and/or installing temporaiy fencing and safety lights.
PS-4 Construction contractors shall be responsible for providing appropriate security measures,including the Construction Contractor During Construction
provision of security guards,_for all equipment staging and/or storage areas needed for the project.
PS-5 Pipeline construction contractors shall coordinate construction activities with local public transit providers prior Construction Contractor Pre-Construction
to start of work.Local Public Transit
Providers
PS-6 To reduce the potential of inconveniencing patrons reliant on unscheduled bus or paratransit services,Construction Contractor Pre-Construction
construction contractors shall provide two week’s notice to patrons in construction areas which could be affected
by_reduced_transit_accessibility.
PS-7 The OCWD and OCSD shall keep all local police and fire jurisdictions abreast of construction schedules.OCWD/OCSD Pre-Construction
Local Police/Fire During Construction
Departments
—11—
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Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
PS-8 Pipeline construction contractors shall coordinate construction timing with local refuse companies to ensure
timely pickup of business and residential refuse.Coordination shall continue as frequently as necessary to
maintain adequate public service.
Construction Contractor
Local Refuse Companies
Pre-Constnjction
During Construction
PS-9 Construction contractors shall dispose of construction refuse at approved disposal locations.Contractors shall
not be permitted to dispose of construction debris in residential or business containers.
Construction Contractor During Construction
Utilities_and_Service_Systems
U-l The OCWD and OCSD shall coordinate ~th all potentially affected utility companies and jurisdictions to
determine which utility lines and/or facilities will require relocation or abandonment and replacement.This
information shall be made available to all applicable construction contractors prior to beginning work on the
Groundwater Replenishment System facilities.
OCWD/OCSD
Local/City Utility
Companies
Pre-Construction
U-2 The construction contractor shall coordinate with all potentially affected utility companies and jurisdictions to
determine the exact location of all underground utilities prior to doing any work or taking action which could
damage such facilities or interfere with their operations.The construction contractor shall protect all existing
utility lines and associated substructures from damage unless specifically noted on the plans.
Construction Contractor
Local/City Utility
Com~ues
Pre-Construction
U-3 Temporary replacement of utility lines will be constructed by the contractor prior to disturbing existing lines so
that disruption is only momentary.This process shall be used during connection and later disconnection of
utility lines.
Construction Contractor During Construction
U-4 All utilities which cross the pipeline trench will be protected in place,unless otherwise indicated for relocation
on the project plans.The contractor will be required to notify the utility owner and Underground Service Alert
(DigAlert)48 hours in advance of the construction crossing and coordinate the construction schedule with the
utility service providers.Where indicated on the plans,the contractor will provide appropriate means to support
utilities which lie within excavated areas and which are not self-supporting.
Construction Contractor
DigAlert
During Construction
U-5 The alignment and profile of the pipeline will be selected by OCWD and OCSD to minimize interference with
existing sanitary sewer laterals and collection lines.The construction specifications will require that all utilities
including sewer laterals and mains be protected in place during construction and service maintained.Where
sewer lines are damaged,specifications will require that they be repaired prior to certification of that contract’s
completion.Service can be maintained by repairing the damaged sewer immediately and supporting the
repaired sewer during construction or by placing a temporary pipe across the excavation and replacing it with
permane~it sewer pipe at the completion of construction of the conveyance line.
OCWD/OCSD
Construction Contractor
Pre-Construction
During Construction
Where interference is unavoidable,the sewer lines will be relocated and placed in service before commencing
construction of the conveyance line.All new and relocation work shall provide separation of water and sewer
lines_conforming to State Health Department regulations.
Mitigatio toring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
U-6 Should water and/or sewer lines need to be relocated within the area,OCWD and OCSD will coordinate all
necessary actions with the affected provider in advance of those activities.The law protects existing utilities in
place at the time of new construction by requiring the new utility to pay for the cost of relocation.
OCWD/OCSD
Local Utility Providers
Construction Contractor
Pre-Construction
During Construction
U-7 The OCWD and OCSD will coordinate with Southern California Edison and the County of Orange to ensure
that electrical power facilities will meet the construction and operation schedule.
OCWD/OCSD
Edison
County of Orange
Pre-Construction
U-8 The construction contractor will conduct and complete all work on flood control channels during the dry season
so that the capacity;of the channels to carry flood water during the wet season is not hindered.
Construction Contractor During Construction
:
U-9 The OCWD and OCSD shall investigate all available alternatives,then select the best method of solids disposal
and reduction of solid waste stream as required in the California integrated Waste Management Act prior to the
start of construction.
OCWD/OCSD Pre-Construction
~
U-lO The OCWD and OCSD shall coordinate with the Orange County Planning &Development Services Department
(Orange County Flood Control District)to ensure compatibility;and joint use feasibility with existing and future
projects.Plan approval will also be required by the U.S.Army Corps of Engineers requisite to County approval.
OCWD/OCSD
Orange County and
Development Services
Department,ACOE
Pre-Constniction
U-il The OCWD and OCSD shall obtain the appropriate encroachment permit(s)from all affected property owimers
and responsible agencies.Permits will be obtained from CalTrans,the Orange County Planning &Development
Services Department (Orange County Flood Control District),the Army Corps of Engineers,the County of
Orange,the cities of Anaheim,Costa Mesa,Fountain Valley,Garden Grove,Huntington Beach,Orange,
Southern Pacific Railroad,Atchison,Topeka,&Santa Fe Railroad,industrial park (private),River View Golf
Course and,if applicable,the Mesa Verde Golf Course prior to start of work upon their land.
OCWD/OCSD
CalT~,ACOE
County of Orange
L~al Ci
UPRRJATSFRR
River View Golf
Pre-Construction
Aesthetics/Lights_and_Glare
AS-i Install a mnimum 8’-12’wide landscape buffer on the OCWD site along Ward Street and Ellis Avenue.Buffer
planting shall include evergreen trees (approximately 15’-20’on center;15 gallon and 24”box)plus shrubs
(minimum double staggered row)to soften views from the streets into the plant site.
OCWD/OCSD Pre-Construction
During
Construction
AS-2 Provide compatible exterior architectural design treatments to pump stations,UV building,MF and RO facilities
and all other storage,office and visitor center structures to be built on the treatment plant site.Designs should
blend well with existing office facilities onsite and surrounding uses.
OCWD/OCSD Pre-Construction
AS-3 All onsite security lighting shall be directed away from adjacent residential,business uses and away from the
Santa Ana River right-of-way.
OCWD/OCSD Post-Construction
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Mitigation Monitoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
AS-4 Construction contractors shall be required to direct nighttime construction lighting away from residential and
institutional uses.
Construction Contractor During Construction
AS-5 Construction contractors shall be required to keep construction and staging areas free of trash or other debris
and to keep_staging areas orderly.
Construction Contractor During Construction
AS-6 Contractors constructing the Seawater Intrusion Barrier pipeline shall be required to restore the ground surface
to original condition.
Construction Contractor During Construction
AS-7 If the final route for the major conveyance pipeline is through the River View Golf Course,affected landscaping
shall be restored.If trees with a diameter of more than 6”are removed,they shall be replaced at a ratio of 3
replacements for every one removed.If smaller trees are removed they shall be replaced at a I to I ratio.
Disturbed greens and rough shall be replanted.
OCWD/OCSD
Construction Contractor
Post-Construction
AS-8 If the final route for the major conveyance pipeline is through the adjacent neighborhood,construction
contractors shall take extra care to avoid damage to existing street trees.Damaged trees shall be treated to
enhance their survival,or replaced with large box specimens if survival cannot be assured.
Construction Contractor During Construction
Post-Construction
Cultural Resources
CR-i An Orange County Certified Paleontologist shall be retained to produce a mitigation plan for the Groundwater
Replenishment_System.
OCWD/OCSD Pre-Construction
CR-2 The paleontologist shall attend the pre-grading meeting to discuss the monitoring,collecting and safety
procedures for the project and shall supervise the paleontologic monitoring during earth moving activities,
including well boring,in sensitive areas.
OCWD/OCSD
Project Paleontologist
Pre-Construction
CR-3 Historic peat bog deposits are not considered paleontologic resources.However,should peat bogs be found
during project construction activities,the area should be reviewed by a qualified archaeologist.The ~5
mapped as Quaternamy or Holocene Alluvium shall be monitored or a periodic basis to insure older underlying
sediments are not being penetrated.Artificial fill,disturbed soils and rock and slopewash will not require
monitoring.
OCWD/OCSD
Project Archeologist
During Construction
CR4 Screening of sediments shall also be conducted under the supervision of the paleontologist during monitoring
because many significant vertebrates remains are small.Up to a six thousand pound matrix sample may be
processed by any;_single locality as recommended in the Guidelines in the Society of Vertebrate Paleontologists.
Project Paleontologist During Construction
CR-5 The paleontological monitor shall have the authority to temporarily divert or redirect grading to allow time to
evaluate any exposed fossil material.
Project Paleontologist During Construction
44~
Mitigatlo itoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
CR-6 During monitoring,any scientifically significant specimens shall be properly salvaged after evaluation by,and
under the supervision of,the paleontologist.During fossil salvage,contextual stratigraphic data shall also be
collected.This will include lithologic descriptions,localities plotted on a USGS 7.5’Series topographic
quadrangle,photographs and field notes.Specimens shall be prepared to the point of identification,stabilized,
identified and curated on a long term loan basis in a suitable repositoiy that has a retrievable storage system,
such as the Interpretive Center at Ralph Clark Regional Park,an Orange County facility;,which shall have the
first right-of-refusal of the collection,_or the Los Angeles_County Museum of Natural History
Project Paleontologist During Construction
Post-Construction
CR-7 A final report shall be prepared at the end of earth moving activities and shall include an itemized inventory of
recovered fossils and appropriate stratigraphic and locality data.This report shall be sent to the Lead Agency,
signif~ring the end of mitigation.Another copy shall accompany any recovered fossils,along with field logs and
photographs,_to the_designated_repository.
Project Paleontologist
OCWD/OCSD
Post-Construction
~
CR-8 Full time monitoring shall be conducted during earth moving activities,including well drilling,in any
Pleistocene deposits.
OCWD/OCSD During Construction
Archaeological/Historical Resources
CR-9 A focused field survey of archaeological and historic resources shall be conducted before construction of the
conveyance pipeline and new injection wells and pipeline to serve the wells as selected by the OCWD for the
Groundwater Replemshnient_System.
OCWD/OCSD Pre-Construction
CR-lO For geotechnical testing along any proposed pipeline route,an Orange County certified archaeologist shall be
retained to observe their excavations and to halt work if significant remains are found.Geotechnical testing
includes trenches,pot holes and core boring.An archeologist shall be notified at least 24 hours ahead of any
geotechnical testing in order to meet the testing schedule.
OCWD/OCSD Pre-Construction
CR-li An Orange County Certified archaeologist shall be present at the program pre-grading meeting to discuss the
monitoring,collecting and safety procedures for the project.At that time,the archaeologist shall review the
construction plans and ensure that no construction activity;will affect identified archaeological or historic
resources.
Project Archaeologist Pre-Construction
CR-l2 During program grading activities,an Orange County Certified Archaeologist shall be retained to conduct full-
time monitoring in archaeologically sensitive areas to observe and retrieve any buried artifacts that may be
uncovered.
Project Archaeologist Pre-Construction
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Mitigation Monitoring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
CR-i 3 If human remains are found during the excavation the steps listed below from the Native American Graves
Protection Act guidelines and State law shall be followed:
•Halt the work in the immediate area;
•Leave the remains in place;
•Contact the OCWD/OCSD,project personnel and the Orange County Coroner;
•The remains are not to be removed until a representative of the Coroner’s office reviews the remains in the
field;
•If the Coroner determines that the remains are prehistoric,the Coroner shall contact the Native American
Heritage Commission and the most likely descendent from the Native American Community is to be
infonned;and
•The final deposition of remains shall be coordinated by representatives of the property owner and the most
likely descendent.
OCWDIOCSD
Construction Contractor
County Coroner
CR-14 II prehistoric artifacts or a buried deposit is uncovered,the Orange County certified archaeologist shall
temporarily halt construction activities for the immediate area until the archaeologist can evaluate the
significance of the find.Implementation of a recovely program would follow,if the remains are determined
potentially eligible to the National_Register.
Project Archaeologist During Construction
CR-15 A final monitoring report,including an itemized inventoly and pertinent field data,shall be sent to the
OCWD/OCSD as well as copies of the report to the Archaeological Information Center at the University;of
California,Los Angeles,and to the County of Orange Public Facilities &Resources Department-Harbors
Beaches &Parks Division.
Project Archaeologist
OCWD/OCSD
Post-Construction
CR-16 Any recovered artifacts shall be properly collected with locations plotted on a USGS 7.5’topographic
quadrangle,with photographs and field notes of the find.Artifacts will be identified,and artifact catalog
prepared,and artifacts stabilized for curation.Any recovered artifacts shall be offered,on a first right-of-refusal
basis,to a repositoiy with a retrievable collection system and an educational and research interest in the
materials.The Anthropology Museum at California State University,Fullerton would be an appropriate
repositoiy to receive any artifacts collected in the study area.
Project Archaeologist During Construction
Post-Construction
Mitigatio toring Plan
Groundwater Replenishment System Attachment B
TABLE 1
GROUNDWATER REPLENISHMENT SYSTEM -MITIGATION MONITORING AND REPORT PROGRAM
Mitigation Measures
Responsible
Party(s)Timing
Recreation
R-1 The Orange County Water District and Orange County Sanitation District will provide a written construction
schedule to all the cities having parks adjacent to the construction zone and to the County of Orange advising
when project construction may impact park and recreation facilities within their jurisdictions.The construction
schedule will also be provided to the Mesa Verde and River View Golf courses.
OCWD/OCSD
Local City/County Parks
Departments
Pre-Construction
R-2 The Orange County Water District and Orange County Sanitation District will negotiate for construction and
access easements and encroachment permits with the operators of the River View Golf Course and if applicable,
the Mesa Verde Golf Course,an with entities owning land in the area of the Groundwater Replenishment
System.Landowners and responsible agencies include CalTrans,Orange County Flood control District,U.S.
Army Corps of Engineers,County of Orange,the cities of Anaheim,Fountain Valley,Garden Grove,
Huntington Beach and Orange,Union Pacific Railroad,Atchison,Topeka &Santa Fe Railway and a private
industrial park._Compensation for business loss shall be addressed in the agreements.
OCWD/OCSD
River View Golf
OCFcD,ACOE
County of Orange
Local Cities
SPRRIATSFRR
Pre-Construction
R-3 The Orange County Water District and Orange County Sanitation District will prepare a plan to detour users of
the Santa Aim River Bikeway around the construction areas so that the paved trail remains open during
construction.The Districts shall work with the County of Orange and local bicycle group on the preparation of a
trail detour plan.
At a minimum,the following County Departments shall be contacted to help prepare trail detour plan:
•Public Facilities and Resources Department,Harbors,Beaches and Parks Department
•Planning and Development Services Department.
At a minimum,the following local bicycle group shall be contacted:
•Orange County Bicycle Coalition,630 5.Glassel Street,Suite 100,Orange,CA 91666,(714)288-9130.
The final trail detour plan shall be submitted to the above groups for review and comment.
OCWD/OCSD
County of Orange
Pre-Construction
~
R-4 The construction contractor will ensure that adequate barriers are established to prevent recreational facility
users from entering the active project construction area.
Construction Contractor During
Construction
R-5 Following construction,the construction areas in golf courses and the Santa Ana River Trail will be restored to
their original condition and re-landscaped as appropriate.
Construction Contractor Post-Construction
Environmental Justice
•None.
Indian Tnist Assets
•None.
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Mitigation Monitoring Plan
Groundwater Replenishment System Attachment B
TABLE I
GROUNDWATER REPLENISHMENT SYSTEM
MITIGATION MONITORING AND REPORTING PROGRAM
LIST OF ABBREVIATIONS
ACOE U.S.Army Corps of Engineers
DigAlert Underground Service Alert
GAC Granular Activated Carbon
MF Membrane Filtration
OCFCD Orange County Flood Control District
OCSD Orange County Sanitation District
OCWD Orange County Water District
SCAQMD South Coast Air Quality Management District
RO Reverse Osmosis
System Groundwater Replenishment System
USGS United States Geological Survey
UV Ultraviolet Light
H:\wp.dta\admin\BS\Resolutions\1 999\OCSD99-O1 .doc
Last printed 03/17/99 10:06 AM