Corona City Council
February 5, 2025

DRAFT SUBSEQUENT EIR

GREEN RIVER RANCH SPA & BUSINESS PARK

INDUSTRIAL DEVELOPMENT AND
RELOCATION OF PCL - 1

CITY OF CORONA
SEPTEMBER 202 4

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Policy PS-7.1 Require larger developments to incorporate site design features that help ensure maximum visibility and security for entrances, pathways, streets and sidewalks, corridors, public and private open space, and parking lots and structures.

Policy PS-7.2 Require the incorporation of appropriate lighting that provides adequate exterior illumination around commercial, business park, public spaces, parking lots, and multifamily structures.

Policy PS-7.3 Work with traffic engineers to develop methods through design, enforcement, and engineering to reduce the volume and severity of vehicle, pedestrian, and bicycling accidents citywide and around sensitive land uses such as schools, apartments, and other highly traveled uses.

Policy PS-7.5 Require large-scale retail developments to incorporate video surveillance security systems within their facilities and grounds to monitor open public spaces and, where appropriate and feasible, provide office space for police facilities.

Policy PS-8.2 Ensure that fire staff at all levels are sufficient in number and appropriately trained to effectively plan and respond to all types of fire and related emergencies in the community.

Policy PS-9.4 Maintain safe and accessible evacuation routes throughout the community; take precautions and ensure backup or mitigations for routes crossing high hazard areas (e.g., flood, seismic, high fire, etc.).

Policy PS-10.2 Require all improved and new homes, structures, and facilities in the very high fire hazard severity zones to adhere to additional fire safe design standards consistent with state law and local practice.

Policy PS-10.3 Require all improved and new developments to be thoroughly reviewed for their impact on safety and the provision of fire protection services as part of the development review process.

Policy PS-10.4 Require new and rehabilitated homes and structures to meet or exceed City fire prevention standards and state law, including building access, construction design, sprinklers, and others as required by Corona Fire.

Policy PS-10.5 Require all new commercial, industrial, institutional, multiple-unit housing, mixed-use, and one- and two-family dwelling developments to install fire protection systems and encourage the use of automatic sprinkler systems where not required by local codes and ordinances.

Policy PS-10.6 Require fuel modification plans and vegetation clearance standards for development in VHFHSZs to protect structures from wildfire, protect wildlands from structure fires, and provide safe access routes for the community and firefighters.

Policy PS-10.7 Condition approval of parcel maps and tentative maps in VHFHSZs based on meeting or exceeding the SRA Fire Safe Regulations and the fire hazard reduction around buildings and structures regulations.

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Policy PS-10.8 Coordinate with the Department of Water and Power to ensure that adequate water supply and flows are available for firefighting; where inadequate, ensure provision of off-site water supply and transport.

Policy PS-10.9 Continue to require visible premise identification and signage per Corona’s Premise Identification Guideline that meet or exceed SRA and CFC requirements.

4.9.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City, significant hazards and hazardous materials impacts would occur if the proposed Project or any Projectrelated component would:

Threshold HAZ-1 Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? Threshold HAZ-2 Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?
Threshold HAZ-3 Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school?
Threshold HAZ-4 Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code § 65962.5 and, as a result, would it create a significant hazard to the public or the environment? Threshold HAZ-5 For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area?
Threshold HAZ-6 Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?
Threshold HAZ-7 Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? (SEE SEIR SECTION 4.20 - WILDFIRE)

METHODOLOGY
As indicated previously, a Phase I ESA Update was prepared addressing hazardous conditions on the proposed BPI Development (PAs 1, 2, 3) and future Estate Residential (PA 5) components of the Modified Project area. The purpose of ESA was to identify and evaluate actual and potential environmental conditions involving the subject site. It was not the purpose of this assessment to determine the degree or extent of contamination, if any, but rather the

DRAFT SUBSEQUENT EIR

GREEN RIVER RANCH SPA & BUSINESS PARK

INDUSTRIAL DEVELOPMENT AND
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SEPTEMBER 202 4

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4.9-15
potential for contamination. The scope of work performed therefore focused on general characterizations of environmental concerns based on reasonably ascertainable information and observations. The ESA was conducted in accordance with ASTM E 1527-13 and included the following tasks:
• A reconnaissance of the Site and surrounding properties to visually assess current utilization and indications of potential surface contamination. This was accomplished by driving the Site boundaries, and then traversing the Site until the entire Site had been surveyed.
• A reconnaissance of the surrounding area for approximately one-half mile was conducted, without entering the properties, making observations concerning property uses, conditions, and housekeeping.
• An environmental database report was obtained from a data service provider. This database report compiles and locates documented “hazardous waste” facilities within specific minimum search distances as defined by ASTM E 1527-13. If necessary, additional information on identified facilities was gathered by a file review at the appropriate federal, state, local, and/or tribal regulatory agency.

4.9.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior
EIR?
Would the Modified
Project be
implemented under
changed
circumstances
resulting in new or
more severe impacts
requiring revisions
to the Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the
Modified Project
requiring
revisions to the
Prior EIR?
Would the
Modified
Project result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

HAZ-1 Create a significant hazard
to the public or the
environment through the
routine transport, use, or
disposal of hazardous
materials?
HAZ-2 Create a significant hazard
to the public or the
environment through
reasonably foreseeable
upset and accident
conditions involving the
release of hazardous
materials into the
environment?

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SEPTEMBER 202 4

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HAZ-3 Emit hazardous emissions
or handle hazardous or
acutely hazardous
materials, substances, or
waste within one-quarter
mile of an existing or
proposed school?
HAZ-4 Be located on a site which
is included on a list of
hazardous materials sites
compiled pursuant to
Government Code §
65962.5 and, as a result,
would it create a
significant hazard to the
public or the environment?
HAZ-5 For a project located
within an airport land use
plan or, where such a plan
has not been adopted,
within two miles of a
public airport or public use
airport, would the project
result in a safety hazard or
excessive noise for people
residing or working in the
project area?
HAZ-6 Impair implementation of
or physically interfere with
an adopted emergency
response plan or
emergency evacuation
plan?
HAZ-7 Expose people or
structures, either directly
or indirectly, to a
significant risk of loss,
injury or death involving
wildland fires?

IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
Impact HAZ-1: Create a significant hazard to the public or the environment through the routine transport, use or disposal of hazardous materials? Impact HAZ-2: Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?

DRAFT SUBSEQUENT EIR

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Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

No changes in the location, size, or boundaries of the GRRSP Planning Area boundary have occurred since adoption of the GRRSP in 2001. As discussed in the Project Description, the Modified Project would modify the size and boundaries of the GRRSP, however minimally in the northern portion of the Project site. In addition, the eastern portion of the Modified Project has been slightly expanded to incorporate appropriate grading limits within the hilly terrain.

All fuels, solvents and other materials used during construction of each phase of the Modified Project would be required to comply with applicable standards and regulations related to hazardous materials and hazardous waste as discussed in the 2001 EIR. Nonetheless, development of the GRRSP as proposed for amendment would result in an incremental increase over existing conditions in the potential for accidental releases of hazardous materials during routine transportation and disposal of hazardous materials. All materials used during construction and operation would be required to comply with applicable standards and regulations related to hazardous waste as specified in the 2001 EIR and as currently regulated through existing procedures and therefore no new or substantially greater impacts would occur.

The Modified Project’s impacts associated with hazards from routine transport, use, or disposal of hazardous materials and from the release of hazardous materials from upset and accident conditions would be less than significant and no mitigation is required. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR This topic will not be evaluated further in this SEIR.

Mitigation Measure
No mitigation measures are required.

Impact HAZ-3: Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

As noted in the Prior EIR, there were no schools within 0.25 mile of the Approved Project. No schools have been built within 0.25 mile of the Modified Project since approval of the Approved Project. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project as compared to the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

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SEPTEMBER 202 4

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Impact HAZ-4: Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 67962.5 and, as a result, would it create a significant hazard to the public or the environment?
The Modified Project would result in new or more severe impacts requiring revisions to the Prior EIR.

The ESA prepared to assess hazardous conditions affecting the BPI Development and ER portions of the Modified Project found these properties do not appear on the hazardous database reports obtained for the assessment. There is one adjacent facility to the northeast listed on the California Environmental Reporting System (CERS) Hazardous Waste, CERS TANKS, facility and Manifest Data (HAZNET), Underground Storage Tank (UST), and the Resource Conservation and Recovery Act (RCRA) NonGen databases. This facility is listed Kaykel Investments Properties DBA Green River 76 located at 4350 Green River Road. The CERS Hazardous Waste and TANKS have CERS descriptions listed as “Hazardous Waste Generator” and “Underground Storage Tank”, respectively. There are multiple violations described that have all been returned to compliance. The HAZNET listing lists the waste code as “aqueous solution with total organic residues less than 10 percent with the disposal method listed as “other recovery of reclamation for reuse including acid regeneration”. The UST database lists four tanks total. The RCRA Non-Gen database lists the classification as “nongenerator” with a description of “handler: non-generators do not presently generate hazardous waste” with no violations found. There are 24 additional facilities listed on the database report within the various search distances specified by ASTM E 1527-13. Due to the status listings, distances and/or locations (hydro-geologically down-or crossgradient), these facilities do not represent an environmental concern to the Site. Therefore, the ESA determined no evidence exists of a recognized environmental condition in connection with the subject Site. However, the ESA noted that prior to demolition of any of the existing Site structures, existing federal and state regulations require asbestos-containing materials (ACM) and lead-based paint (LBP) surveys be performed.

In addition, there is evidence of an environmental concern at the subject Site that is a common concern frequently found on properties with former historical agricultural use. The northern portion of the Site has historically been used for agricultural purposes from at least 1946 to at least 1953. Historically, some agricultural sites have utilized pesticides that are currently considered a health risk and no longer used and consideration should be given to performing limited site testing of near surface soils prior to site preparation and grading in order to test for elevated concentrations of these chemicals. This is significant impact requiring mitigation.

Implementation of new Mitigation Measure MM HAZ-1 would reduce the impact to less than significant.

DRAFT SUBSEQUENT EIR

GREEN RIVER RANCH SPA & BUSINESS PARK

INDUSTRIAL DEVELOPMENT AND
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CITY OF CORONA
SEPTEMBER 202 4

HAZARDS AND HAZARDOUS MATERIALS

ENPLANNERS

4.9-19
Overall, the Modified Project implemented under changed circumstances would result in new or more severe impacts requiring revisions to the Prior EIR.

Mitigation Measure
The Modified Project introduces the following Mitigation Measures further described in detail Section 4.9.10.
• MM HAZ-1
Impact HAZ-5: For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area? Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

There are no public or private airports in the vicinity of the GRRSP Planning Area that would be affect or be affected by the Modified Project. Development of the Modified Project would not result in a safety hazard for people residing or working within the GRRSP Planning Area.

No new or substantially greater impacts would occur with implementation of the Modified Project. The Modified Project’s impacts regarding public and private airports are consistent with the impacts identified in the Prior EIR and the level of impact (no impact) remains unchanged. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

Impact HAZ-6: Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The Modified Project would be designed, constructed, and maintained in accordance with applicable standards associated with vehicular and emergency access, which would ensure that access would be properly provided for adequate emergency access and evacuation to and from each phase of the Modified Project’s development. Access to the BPI Development site would be provided to and from Green River Road via Street “A” and emergency vehicle access would be provided via a driveway on Dominguez Ranch Road. Traffic from all of the Modified Project would not use Fresno Road for site access. Construction activities that could

CITY OF CORONA
SEPTEMBER 202 4

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temporarily restrict vehicular traffic on public roadways would be required to implement a Traffic Management Plan as part of building permit approval to ensure adequate access is maintained. Compliance with existing regulations for emergency access and evacuation would ensure impacts related to emergency access and response is less than significant and no mitigation is required.

Members of the public expressed concerns regarding the Modified Project’s potential to further limit the ability for emergency response vehiclesto travel along Green River Road, Dominguez Ranch Road, and other roadways in the vicinity when responding to calls during congested weekday a.m. and p.m. peak commute periods. These concerns were expressed at the public scoping meeting held at City Hall on September 22, 2022 and in letter/email form in response to the Notice of Preparation distributed for review August 29, 2022 through September 28, 2022. The following analysis addresses these concerns.

At the time the 2001 EIR was prepared, the area currently proposed for BPI land uses in revised PAs 1, 2, and 3 was planned for Mixed-Use (MU) land uses as shown in the existing GRRSP.

Because this MU land use category allows a wide range of land use types, analysis of impacts was conducted based on development of retail shopping uses. These uses entail the highest trip generation potential and therefore was used in the analysis assumptions of the Approved Project in the 2001 EIR in order to ensure impacts associated with air quality, noise and traffic were adequately assesses and not underestimated. Section 4.2 of the 2001 EIR estimated trip generation for the Approved Project to be 11,207 trips per day with 913 occurring during the a.m. peak hour and 965 occurring during the p.m. peak hour. As identified in Section 4.17 of this SEIR, trip generation for the Modified Project is estimated to be 4,370 trips per day with 429 occurring during the a.m. peak hour and 386 occurring during the p.m. peak hour. Table

4.9.A summaries the trip generation estimates contained in the 2001 EIR for the Approved Project and in Section 4.17 of this SEIR for the Modified Project.

Table 4.9-1: Trip Generation Comparison Approved Project vs. Modified Project Estimate Daily
Trip Generation
A.M. Peak Hour
Trip Generation
P.M. Peak Hour
Trip Generation
Approved Project 11,207 913 965
Modified Project 4,370 429 386
Trip Reduction
(Percent Decrease)
6,837
(61.0%)
484
(53.0%)
579
(60.0%)
Source: Urban Crossroads (Appendix P)
As shown in Table 4.9.A, the Modified Project would result in a substantially reduced trip generation in comparison to the Approved Project. On a daily basis the Modified Project would generate approximately 61% fewer trips per day, approximately 53% fewer trips in the a.m.

DRAFT SUBSEQUENT EIR

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INDUSTRIAL DEVELOPMENT AND
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HAZARDS AND HAZARDOUS MATERIALS

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peak commute hour, approximately 60% fewer trips in the p.m. peak commute hour Approved Project.

Traffic conditions at the time the 2001 EIR was approved were similarly congested as they are currently. Although improvements to SR-91 and Green River Road have been constructed and completed, regional population growth has outpaced these improvements and traffic congestion persists. Nonetheless, this congestion is an existing condition not created by the Modified Project and traffic congestions is no longer used as the definition of a traffic impact.

For these reasons and based on the substantially reduced quantity of trips estimated for the Modified Project in comparison to the Approved Project, it reasonable to conclude the Modified Project’s impacts associated with physical interference with an adopted emergency response plan are consistent with the impacts identified in the Prior EIR and the level of impact (less than significant) remains unchanged. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project as compared to the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

Impact HAZ-7: Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? See Section 4.20 of this SEIR for a detailed analysis of the Wildfire topic is currently required under CEQA.

4.9.8 CUMULATIVE IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Less Than Significant Impact/No Changes or No New Information Requiring Preparation of an EIR.

Project-specific hazardous material impacts resulting from individual future development projects will be mitigated via application of applicable regulations or addressed separately in future CEQA documents. Anticipated future development will contribute through increases in population and the number of outlets that transport or dispose of hazardous materials, to a cumulative increase in risk for hazardous material incidents. Although each project has unique hazardous materials considerations, future cumulative projects would comply with the local, State, and Federal regulations and requirements as these are required for all development projects. As a result, cumulative impacts associated with hazardous materials would be less than significant.

Cumulative aircraft hazard impacts consist of future development within the boundaries of applicable Airport Land Use Plan (ALUP) accident potential zones. The risk to or from each

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future project is based on the specific accident potential zone. The risks associated with development in these accident potential zones can only be reduced through conformance with land use guidelines and policies identified by the ALUP. Because the surrounding cities as well as the County of Riverside have implemented comprehensive land use plans that incorporate applicable ALUP recommendations, it is anticipated cumulative development within the accident potential zones would in a less than significant cumulative impact associated with aircraft accident hazards.

Similar to the conclusions for the Approved Project contained in the 2001 EIR, the Modified Project would be required to comply with local, State, and Federal regulations and requirements related to hazardous materials. With adherence to these measures, the Modified Project’s impacts would not be cumulatively considerable. Therefore, the Modified Project would not result in a change in cumulative impacts that would require further analysis and the level of impact would remain the same as can be inferred from the time the 2001 EIR was certified.

4.9.9 MITIGATION MEASURES IDENTIFIED IN PRIOR EIR APPLICABLE TO

MODIFIED PROJECT
No mitigation measures related to hazards and hazardous materials were included in the 2001 EIR.

4.9.10 NEW MITIGATION MEASURES APPLICABLE TO MODIFIED PROJECT MM HAZ-1: Prior to issuance of a demolition permit for each phase of development requiring demolition and removal of onsite structures, the Project applicant shall provide documentation to the City of Corona Building Division demonstrating that the improvements and/or buildings subject to a demolition permit application include survey testing for asbestos-containing materials (ACM) and lead-based paints (LBP) in accordance with existing federal and state regulations.

DRAFT SUBSEQUENT EIR

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HYDROLOGY AND WATER QUALITY

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4.10-1

4.10 HYDROLOGY AND WATER QUALITY

4.10.1 INTRODUCTION
This section provides an overview of the existing hydrology and water quality within the GRRSP Planning Area and surrounding region, a summary of applicable regulations, and analyses of potential short-term and long-term hydrology and water quality impacts from implementation of the Modified Project. Mitigation measures are recommended as necessary to reduce significant impacts. No NOP comment letters, or Scoping Meeting comments were received pertaining to this topic.

This section of the Draft SEIR is based on the Preliminary Drainage Report (Drainage Report), prepared by KWC Engineers dated December 2022 (Appendix K-1), and the Project Specific Water Quality Management Plan (WQMP), Revised December 12, 2022, KWC Engineers (Appendix K-2).

4.10.2 SUMMARY OF IMPACTS AND MITIGIATION MEASURES FROM THE 2001 EIR
The 2001 EIR screened out impacts associated with ground water quality and quantity, and ground water flow as a less than significant impact was determined. All further impacts were analyzed in detail 2001 EIR.

The Approved Project impact analysis related to water quality as presented in the 2001 EIR as well as any mitigation measures identified to reduce significant impacts are summarized as follows:
a) Substantial degradation of water quality.

The 2001 EIR determined, adherence to applicable standards, permits, regulations, and/or clearances of the Corps, the RWQCB, and the CDFG, as included in mitigation measures MM

4.11.1A and 4.11.1B, potential impacts related to water quality to a less than significant level.

The 2001 included MM 4.11.1A which required the Project applicant to obtain all permits and clearances from the Corps, the RWQCB, and the CDFG prior to the disturbance of any existing drainage. In addition, the 2001 EIR included MM 4.11.1B of which the Approved Project’s drainage facilities within engineered slopes/fills shall be designed and installed in accordance with the City of Corona standards. Furthermore, 2001 EIR determined wetlands are absent from the Approved Project site. Impacts were determined to be less than significant with implementation of mitigation.
b) Substantial degradation or depletion of groundwater resources.

The 2001 EIR determined with implementation of mitigation potential impacts associated with any increase in the amount of surface runoff would be reduced to less significant levels. The

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2001 stated the Approved Project involves significant alterations to the existing topography and drainage of the site, including the installation of impermeable surfaces that will increase surface flows and the current drainage structures may be insufficient to handle the increased flows (including 100-year storm) resulting from the Approved Project. With adherence to mitigation measure MM 4.11.2A and 4.11.2B, the 2001 EIR determined the Approved Project’s storm drain plan would maintain natural drainage patterns and handle the increased flows, ultimately reducing the volume of downstream storm flows to a level manageable by the existing culverts.
c) Substantial flooding, erosion, or siltation.

The 2001 determined with implementation of mitigation potential impacts associated with erosion and sedimentation were reduced to less than significant level. The 2001 EIR stated the Approved Project will require the substantial modification of existing on-site slopes and/or construction of manufactured slopes. In addition, exposed cuts/slopes will be prone to erosion, which may affect the quality/quantity of surface runoff. As a result, the 2001 EIR required the implementation of mitigation measures MM 4.11.3A through 4.11.3D to reduce the temporary construction or longterm impacts associated with final development to a less than significant level.
d) Substantial change of existing flowpaths, substantial redirection of storm runoff, or realignment of flood control channel.

Implementation of the Approved Project was determined in the 2001 EIR to increase the amount of impermeable surfaces on site. In addition the Approved Project runoff will contain pollutants typically associated with urban use, such as oil and rubber residues, fertilizers, pesticides, detergents and hydrocarbon particles which may incrementally degrade surface water quality downstream of the Project site, therefore requiring mitigation. The 2001 EIR required the installation of “stormceptors” (MM 4.11.4A) and adherence to applicable standards of the Santa Ana RWQCB (MM 4.11.4B) would reduce potential impacts associated with this issue to a less than significant level. The 2001 EIR determined with implementation of mitigation measures MM 4.11.4A and MM 4.11.4B the Approved Project’s drainage system will be designed, installed, and maintained in such a manner as to reduce potential impacts to water quality to a less than significant level.

Cumulative Impacts
The 2001 EIR stated the cumulative development will have an impact on regional flooding due to the increase in impervious ground cover and urban runoff associated with increased development. As such, the 2001 EIR determined the Approved Project would contribute to regional runoff; however, the Approved drainage plan for the GRRSP area is intended to manage and regulate potential flooding and downstream impacts to soils, vegetation or other development. In addition, other projects at that time in the City and/or County must also

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comply with the applicable General Plan Policies for drainage improvements. Furthermore the 2001 EIR determined, review of flood control facilities/plans for other projects in the vicinity can serve to mitigate additional downstream flooding impacts and regional flood control planning such as that conducted by the Corps can serve to further mitigate cumulative impacts related to flooding. The 2001 EIR determined, with implementation of mitigation measures

4.11.1 through 4.11.4, cumulative impacts would be mitigated to a less than significant level.

4.10.3 ENIVRIONMENTAL SETTING
Regional Drainage
As previously stated, the City resides within the regional Santa Ana River Watershed, a flood control zone monitored by the Santa Ana RWQCB that covers portions of the Counties of Riverside, Orange, and San Bernardino. Within Riverside County, this regional watershed is subdivided into the Santa Ana Sub-watershed (of which the City lies within) and the San Jacinto River Sub-watershed. The Santa Ana Sub-watershed consists of the Santa Ana River and its tributaries and the San Jacinto River Sub-watershed includes the San Jacinto River and its tributaries that overflow into the Santa Ana River only in high volume storm events.

Ultimately, all channels converge with the Santa Ana River where downstream ends of the channel travel through Orange County prior to emptying into the Pacific Ocean.

Local Surface Waters
The Santa Ana Sub-watershed is also further subdivided into smaller sub-watersheds based on major tributary channels that feed into the Santa Ana River. The City lies within two of these smaller sub-watersheds: the Middle Santa Ana River Sub-watershed and the Temescal Wash Sub-watershed. The Middle Santa Ana River Sub-watershed is located in the northwest corner of Riverside County and covers a total tributary area of 170 square miles that generally drains westwards towards the Santa Ana River. Tributaries to this sub-watershed include: Temescal Creek, Tequesquite Arroyo (Sycamore Creek), Day Creek, and San Sevaine Creek. The Temescal Sub-watershed covers 250 square miles and is defined as the tributary area draining into the Temescal Wash, also known as Temescal Creek, that connects Lake Elsinore with the Santa Ana River.

Tributaries to the Temescal Wash include Wasson Canyon Wash, Arroyo Del Toro, Stovepipe Canyon Wash, Rice Canyon Wash, and Lee Lake. A majority of Corona lies within this subwatershed, and the drainage channels that run through the City that tie into the Temescal Wash include Arlington Channel, Main Street Channel, Oak Street Drain, Joseph Canyon Wash, and Bedford Wash.

Existing Drainage
The GRRSP Planning Area is approximately 160 acres of vacant land situated in the hills to the northeast of the City of Corona adjacent to Green River Road. The Modified Project site is

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generally bounded to the north and east by the vacant land and SR 91 and SR 71, to the south by hillside, and to the west by vacant land/commercial.

The GRRSP Planning area consists of sparsely vegetated and otherwise undeveloped land with the exception of dirt roads. The Modified Project site is characterized by flat topography with hillside on the south which introduces offsite flow into the site. The hill side to the south is characterized by steep topography, generally increasing in elevation from the south to the north. Small ravines are present which convey the natural drainage across the Project site.

4.10.4 EXISITING REGULATIONS, PLANS, PROGRAMS, AND POLICIES

FEDERAL REGULATIONS
Clean Water Act
The Clean Water Act (CWA) established the basic structure for regulating discharges of pollutants into "waters of the U.S." The Act specifies a variety of regulatory and non-regulatory tools to sharply reduce direct pollutant discharges into waterways, finance municipal wastewater treatment facilities, and manage polluted runoff. Key components of the Clean Water Act that are relevant to the proposed Project are:
• Sections 303 and 304, which provide for water quality standards, criteria, and guidelines. Section 303(d) requires the state to develop lists of water bodies that do not attain water quality objectives (are impaired) after implementation of required levels of treatment by point-source dischargers(municipalities and industries). Section 303(d) also requires that the state develop Total Maximum Daily Loads {TMDLs) for each of the listed pollutants. The TMDL is the amount of pollutant loading that the water body can receive and still be in compliance with water quality objectives. After implementation of the TMDL, it is anticipated that the contamination that led to the 303(d) listing would be remediated. Preparation and management of the Section 303(d) list is administered by the Regional Water Quality Control Boards (RWQCBs). • Section 401 requires activities that may result in a discharge to a federal water body to obtain a water quality certification to ensure that the proposed activity would comply with applicable water quality standards.
• Section 402 regulates point- and nonpoint-source discharges to surface waters through the National Pollutant Discharge Elimination System (NPDES) program. In California, the State Water Resources Control Board (SWRCB) oversees the NPDES program, which is administered by the local RWQCBs. The NPDES program provides both general permits {those that cover a number of similar or related activities) and individual permits.

National Pollutant Discharge Elimination System Permit Program

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The NPDES permit program under the CWA controls water pollution by regulating point- and nonpoint sources that discharge pollutants into "waters of the U.S." California has an approved state NPDES program. The United States Environmental Protection Agency has delegated authority for NPDES permitting to the SWRCB, which has nine regional boards. The Santa Ana RWQCB regulates water quality in the Bloomington area. Discharge of stormwater runoff from construction areas of one acre or more requires either an individual permit issued by the RWQCB or coverage under the statewide Construction General Stormwater Permit for stormwater discharges (discussed below). Specific industries and public facilities, including wastewater treatment plants that have direct stormwater discharges to navigable waters, are also required to obtain either an individual permit or obtain coverage under the statewide General Industrial Stormwater Permit.

STATE REGULATIONS
Porter-Cologne Act
The Porter-Cologne Water Quality Control Act of 1969, codified as Division 7 of the California Water Code, authorizes the SWRCB to provide comprehensive protection for California's waters through water allocation and water quality protection. The SWRCB implements the requirement of CWA Section 303, establishing that water quality standards have to be set for certain waters by adopting water quality control plans under the PorterCologne Act. The Porter-Cologne Act establishes the responsibilities and authorities of the nine RWQCBs, including preparing water quality plans for areas in the region, and identifying water quality objectives and waste discharge requirements (WDRs). Water quality objectives are defined as limits or levels of water quality constituents and characteristics established for reasonable protection of beneficial uses or prevention of nuisance. Beneficial uses consist of all the various ways that water can be used for the benefit of people and/or wildlife. The PorterCologne Act has been amended to provide the authority delegated from the USEPA to issue NPDES permits regulating discharges to surface waters of the U.S.

The unincorporated community of Bloomington is in the Santa Ana River Basin, Region 8, in the Upper Santa Ana Watershed. The Water Quality Control Plan for this region was adopted in 1995. This Basin Plan gives direction on the beneficial uses of the state waters within Region 8, describes the water quality that must be maintained to support such uses, and provides programs, projects, and other actions necessary to achieve the established standards.

California Anti-Degradation Policy
A key policy of California's water quality program is the State's Anti-Degradation Policy. This policy, formally known as the Statement of Policy with Respect to Maintaining High Quality Waters in California (SWRCB Resolution No. 68-16), restricts degradation of surface and ground waters. In particular, this policy protects water bodies where existing quality is higher than necessary for the protection of beneficial uses.

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Under the Anti-Degradation Policy, any actions that can adversely affect water quality in all surface and ground waters must (1) be consistent with maximum benefit to the people of the state; (2) not unreasonably affect present and anticipated beneficial use of the water; and (3) not result in water quality less than that prescribed in water quality plans and policies (i.e., will not result in exceedances of water quality objectives).

California Construction General Permit
The State of California adopted a Statewide NPDES Permit for General Construction Activity (Construction General Permit) on September 2, 2009 (Order No. 2009-0009-DWQ, as amended by 2010-0014-DWQ and 2012-0006-DWQ). The last Construction General Permit amendment became effective on July 17, 2012. The Construction General Permit regulates construction site stormwater management. Dischargers whose projects disturb one or more acres of soil, or whose projects disturb less than one acre, but are part of a larger common plan of development that in total disturbs one or more acres, are required to obtain coverage under the General Permit for discharges of stormwater associated with construction activity.

Construction activity subject to this permit includes clearing, grading, and disturbances to the ground, such as stockpiling or excavation, but does not include regular maintenance activities performed to restore the original line, grade, or capacity of the facility.

To obtain coverage under this permit, project operators must electronically file Permit Registration Documents, which include a Notice of Intent (NOI), a Stormwater Pollution Prevention Plan (SWPPP), and other compliance-related documents, including a risk-level assessment for construction sites, an active stormwater effluent monitoring and reporting program during construction, rain event action plans, and numeric action levels (NALs) for pH and turbidity, as well as requirements for qualified professionals to prepare and implement the plan.

The SWPPP would include a site map, description of stormwater discharge activities, and best management practices (BMPs) taken from the menu of BMPs set forth in the California Stormwater Quality Association (CASQA) BMP Handbook that will be employed to prevent water pollution. It must describe BMPs that will be used to control soil erosion and discharges of other construction-related pollutants (e.g., petroleum products, solvents, paints, cement) that could contaminate nearby water bodies. It must demonstrate compliance with local and regional erosion and sediment control standards, identify responsible parties, provide a detailed construction timeline, and implement a BMP monitoring and maintenance schedule. The Construction General Permit requires the SWPPP to identify BMPs that will be implemented to reduce controlling potential chemical contaminants from impacting water quality. Types of BMPs include erosion control (e.g., preservation of vegetation), sediment control (e.g., fiber rolls), non-stormwater management (e.g., water conservation), and waste management. The SWPPP also includes descriptions of BMPs to reduce pollutants in stormwater discharges after all construction phases have been completed at the site (postconstruction BMPs).

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California Water Resources Control Board Low Impact Development Policy The SWRCB adopted the Low Impact Development (LID) Policy which, at its core, promotes the idea of "sustainability" as a key parameter to be prioritized during the design and planning process for future development. The SWRCB has directed its staff to consider sustainability in all future policies, guidelines, and regulatory actions. LID is a proven approach to manage stormwater. The RWQCBs are advancing LID in California in various ways, including provisions for LID requirements in renewed NPDES Phase I Municipal Separate Storm Sewer System (MS4) permit.

REGIONAL REGULATIONS
Santa Ana Regional Water Quality Control Board Water Quality Control Plan (Basin Plan)
The City of Corona falls under the jurisdiction of the Santa Ana Regional Water Quality Control Board (RWQCB), which establishes water quality standards for both ground and surface waters in its area through the implementation of a Water Quality Control Plan (Basin Plan). This plan outlines existing water quality conditions, sets goals and policies, and serves as the foundation for regulatory programs. It defines water quality standards in terms of the beneficial uses of water bodies and the required levels of quality to protect those uses, as outlined in the federal Clean Water Act (CWA). Each RWQCB is mandated to adopt a Basin Plan that reflects regional water quality differences, beneficial uses of water, and local conditions and issues. Corona, situated in the Upper Santa Ana Watershed of the Santa Ana River Basin (Region 8), adheres to the Water Quality Control Plan for Region 8, established in 1995. This plan delineates beneficial uses, specifies required water quality levels, and outlines necessary programs, projects, and actions to achieve Basin Plan standards.

County of Riverside MS4 Permit
In January 2010, the Santa Ana RWQCB re-issued the Riverside County MS4 Storm Water Permit as Waste Discharge Requirement (WDR) Order R8-2010-0033 (NPDES Permit No.

CAS618033) to the County of Riverside, the incorporated cities of Riverside County, and the Riverside County Flood Control and Water Conservation District within the Santa Ana Region.

Pursuant to the 2010 MS4 Permit, the Co-permittees were required to update and implement a Drainage Area Management Plan (DAMP) for its jurisdiction, as well as Local Implementation Plans (LIPs), which describe the Co-permittees’ urban runoff management programs for their local jurisdictions.

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LOCAL REGULATIONS
City of Corona Local Implementation Plan
Under the City’s Local Implementation Plan (LIP), land development policies pertaining to hydromodification and low impact development (LID) are regulated for new developments and significant redevelopment projects. The use of LID Best Management Practices (BMPs) in project planning and design is to preserve a site’s predevelopment hydrology by minimizing the loss of natural hydrologic processes such as infiltration, evapotranspiration, and runoff detention. These land development requirements are detailed in the County-wide Model Water Quality Management Plan (WQMP) and Technical Guidance Document (TGD), approved in May 2011, which cities have incorporated into their discretionary approval processes for new development and redevelopment projects. Within the City’s built out system, all runoff ultimately discharges into fully engineered concrete flood control channels. Based on this drainage collection system, projects within the City of Corona are not subject to the hydromodification requirements.

Projects are required to comply with the LID requirements in accordance with the LID hierarchy. The LID hierarchy requires new developments and re-developments to implement BMPs under the LID hierarchy as described in the TGD. The LID hierarchy requires new projects to first infiltrate, then harvest and reuse, then biofilter stormwater runoff from their project site. In the City of Corona, infiltration will likely be incorporated for new projects within the central and southern portions of the City as it is comprised of mostly Type A and B soils which typically have high infiltration rates. Groundwater levels throughout the City ranges from 45 feet to 80 feet below ground level which is also beneficial for infiltration BMP implementation. The eastern and western portions of the City are comprised of mostly Type C & D soils and will likely need infiltration testing to confirm infiltration feasibility. In areas where infiltration is determined to be infeasible, harvest and reuse BMPs may prove feasible for projects that incorporate ample landscaping and/or have high indoor toilet flushing demands (i.e. hotels). For areas that cannot infiltrate or utilize harvest and reuse systems, projects will be able to biofilter stormwater through biofiltration BMPs such as vegetated swales and bioretention basins.

Corona Groundwater Management Plan
A Groundwater Management Plan (GWMP) was prepared for the City of Corona in June 2008.

The City of Corona is the water service provider for its constituents, and the GWMP was adopted in accordance with Assembly Bill 3030 to address management for groundwater supply and quality to sustain beneficial uses. The GWMP covers the three groundwater basins that cover the City, including Temescal, Coldwater, and Bedford Basins. The two latter basins (Coldwater and Bedford Basins) make up a portion of the larger Elsinore Basin. Currently, coordinated efforts are required to manage the Coldwater and Bedford Basins between the various agencies with jurisdiction over the area. These agencies that manage the Coldwater

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and Bedford Basins include the City of Corona, the Temescal Valley Water District (TVWD), while Elsinore Valley Municipal Water District (EVMWD) manages the remainder of the Elsinore Basin outside of the Coldwater and Bedford Basins.

Successful implementation of the Groundwater Management Plan also requires coordinated efforts between local jurisdictions and statewide monitoring of California’s groundwater basins. The California Department of Water Resources (DWR) manages the California Statewide Groundwater Elevation Monitoring program which tracks the health and groundwater-level elevations of California’s 515 different basins and how to best manage these basins. It also publishes a list of basin prioritization to determine how resources should be allocated to manage various groundwater basins, with the majority of resources directed towards basins with medium and high priority.

City of Corona Municipal Code
The City’s Municipal Code addresses hydrology and water quality issues through Chapter

13.27, Stormwater Management and Discharge Controls. The purpose of this chapter is to protect the future health, safety and general welfare of the city’s citizens by:
1) Reducing pollutants in storm water discharges to the maximum extent practicable; 2) Regulating illicit connections and discharges to the storm drain system; and 3) Regulating non-storm water discharges to the storm drain system.

The enforcement of this chapter is intended to protect and enhance the water quality of city watercourses, water bodies, groundwater, and wetlands in a manner consistent with the Federal Clean Water Act.

The Municipal Code addresses floodplain issues through Title 18, Floodplain Management.

The purpose of this title is to promote the public health, safety and general welfare and to minimize public and private losses due to flood conditions in specific areas. In order to accomplish its purposes, this title includes provisions for: 1) Restricting or prohibiting uses which are dangerous to health, safety and property due to water or erosion hazards or which result in damaging increases in erosion or in flood heights or velocities; 2) Requiring that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction; 3) Controlling the alteration of natural flood plains, stream channels and natural protective barriers which help accommodate or channel flood waters; 4) Controlling filling, grading, dredging and other development which may increase flood damage; and 5) Preventing or regulating the construction of flood barriers which will unnaturally divert flood waters or which may increase flood hazards in other areas.

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City of Corona 2020–2040 General Plan
Land Use Element
Policy LU-1.4 Accommodate the types, densities, and mix of land uses that can be adequately supported by transportation and utility infrastructure (water, sewer, etc.) and public services (schools, parks, libraries, etc.) Policy LU-1.5 Accommodate land use development in balance with the preservation and conservation of open spaces for recreation, aesthetic relief, natural resource value, and public safety (such as floodways, seismic fault zones, and other).

Policy LU-6.1 Promote sustainable features in new construction and significant renovations, including the use of locally sourced, recycled, and sustainable-sourced building materials, energy- and water-efficient building design, integrated renewable energy and energy storage systems, and waste minimization during construction.

Policy LU-6.2 Require that new residential, commercial, office, and industrial development be designed to minimize consumption of and sustain scarce environmental resources through:
• Site design—concentration and intermixing of development to minimize vehicular trips and promote walking and building orientation for solar access and heat gain and loss
• Landscaping—drought-tolerant species, use of recycled water for irrigation, and other purposes
• Capture of rainwater and re-use on site
• Building design and construction materials—energy and water efficient fixtures, recycled building materials, insulation and wall thickness, permeable paving surfaces, and comparable techniques Policy LU-15.7 Strive to incorporate best practices in sustainability (including water conservation, energy conservation, groundwater filtration, and other similar techniques) into the design and development of public and institutional buildings.

Policy LU-16.1 Accommodate open spaces that can be used for recreation and conserved to protect significant plant and animal habitats and population from the risks of flood, fire, and seismic hazards in accordance with the designations of the land use plan.

Policy LU-16.2 Require the dedication of additional open spaces in new residential subdivisions and other applicable development, where necessary, to preserve the natural topography, plant and animal habitats, and flooding and drainage corridors in accordance with subsequent policies of this plan.

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Policy LU-20.6 Locate and design development to complement and assure its compatibility with the potential Metropolitan Water District (MWD) water treatment facility, if developed.

Housing Element (2021-2029)
Policy H-1.4 Support the development of sustainable projects that reduce demand for water and energy resources, reduce commute times and operational costs, and provide for transit-oriented development.

Community Design
Policy CD-4.2 New development adjoining open spaces, washes or have the ability to provide pedestrian connections to off-site trails or pathways should be designed to ensure landscape transitions and compatibility with these resources. Such improvements should be designed to provide adequate flood protection for adjoining properties.

Infrastructure and Utilities Element
Policy IU-1.1 Review, evaluate, and update the City’s Urban Water Management Plan and related capital improvement programs on a regular basis in order to maintain plans for expansion and improvement of distribution and storage facilities.

Policy IU-1.2 Evaluate the adequacy of water infrastructure in areas where intensification of land use is anticipated; coordinate capital improvements planning for all municipal water service infrastructure with the direction, extent, and timing of growth.

Policy IU-1.3 Construct, upgrade, maintain, and expand water supply, distribution, pumping, storage, and treatment facilities in the Urban Water Management Plan and/or as required to meet state and federalstandards.

Policy IU-1.4 Designate, preserve, and acquire land, if necessary, for siting future water supply, storage, and distribution facilities in conformity with the goals and policies of the Land Use Element.

Policy IU-1.5 As a condition of permit approval, require adequate water supply, distribution, pumping, storage, and treatment facilities to be operational prior to the issuance of building permits.

Policy IU-1.6 Achieve and maintain compliance with all federal, state, and local regulatory standards for drinking water to protect the health, safety, and welfare of Corona.

Policy IU-1.7 Require all new development to be served from an approved domestic water supply to protect the health and safety of the public and groundwater supplies.

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Policy IU-1.8 Through engineering design, construction practices, and enforcement of water regulatory standards, ensure that existing and new land uses and development do not degrade the City’s surface waters and groundwater supplies.

Policy IU-1.9 Require the costs of improvements to the water supply transmission, distribution, pumping, storage, and treatment facilities necessitated by new development be equitably borne by beneficiaries, either through the payment of fees, or construction of the improvements.

Policy IU-2.1 Continue to implement the City’s water conservation and reuse efforts; review these programs regularly, and modify them as appropriate and feasible.

Policy IU-2.2 Establish guidelines and standards for water conservation and actively promote use of water conserving devices and practices in new construction, major alterations and additions to existing buildings, and retrofitting of irrigation systems where feasible.

Policy IU-2.3 Require incorporation of best available technologies for water conservation, internally and externally, in new construction and associated site design.

Policy IU-2.4 Expand the recycled water program to provide water for landscaped medians and other appropriate open spaces along SR-91 and I-15, in coordination with Caltrans when feasible.

Policy IU-2.5 Require that sewer flows be minimized in existing and future developments through water conservation and recycling efforts.

Policy IU-2.6 Encourage the use of recycled water by industrial, commercial, and institutional users through the use of incentives such as differential pricing; require recycled water use for landscaped irrigation, grading, and other noncontact uses in new projects, where feasible.

Policy IU-2.7 Require the use of recycled water for landscaped irrigation, grading, and other noncontact uses in new developments, parks, golf courses, sports fields, and comparable uses, where feasible.

Policy IU-2.8 Continue to provide and support public educational efforts to residents, business, and students regarding the importance of water conservation and recycled water use.

Policy IU-2.9 Require that grading plans be designed and implemented to reduce stormwater runoff by capturing rainwater onsite and storing on a temporary, short-term basis to facilitate groundwater recharge rather than relying solely on community drainage facilities.

Policy IU-2.10 Require the use of rainwater capture and storage facilities, techniques, and improvements in residential and nonresidential developments to further objectives for water conservation.

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Policy IU-3.9 Continue to require all applicable industries/businesses to obtain sewer discharge permits from the City and to comply with the City's Waste Discharge Pretreatment and Source Control Program.

Policy IU-3.10 Continue to implement, as appropriate, the requirements of the NPDES and SCAQMD regulations, including requiring the use of Best Management Practices by businesses in the City.

Policy IU-4.1 Review, evaluate, and regularly update the City’s Storm Drainage Master Plan and related capital improvement programs as a basis for the orderly planning, expansion, and improvement of facilities; implement improvements identified in the Drainage Master Plan.

Policy IU-4.2 Maintain and upgrade public storm drains and storage control facilities and construct or expand storm drain and flood control facilities to protect people and property from flooding and stormwater runoff.

Implement improvements identified in the City’s Drainage Master Plan.

Policy IU-4.3 Designate, preserve, and acquire land, as necessary, for storm drainage and storage control facilities. As necessary, require the reservation of rights-of-way and easements for designated water related infrastructure facilities as a condition of project approval.

Policy IU-4.4 Evaluate the adequacy of stormwater conveyance and storage control facilities in area where intensification of land use is anticipated to occur; coordinate capital improvements planning for infrastructure with the direction, extent, and timing of growth.

Policy IU-4.5 Review development proposals for projects within the City’s Sphere of Influence and encourage Riverside County to not approve any project that cannot be accommodated with an adequate drainage system.

Policy IU-4.6 Annually review the development charge, acquisition of service charge, and monthly service charges in order to ensure that adequate fees and charges are collected to fund the operation, maintenance, and repair of existing facilities and construction of new facilities.

Policy IU-4.7 Require adherence to City regulatory stormwater quality measures and, if needed, take necessary enforcement action(s) to eliminate illicit connections and discharges to/from the stormwater system.

Policy IU-5.1 Ensure that existing and new development does not directly degrade or indirectly contribute to the degradation of surface waters or the groundwater system.

Policy IU-5.2 Reduce pollutant loading through passive treatment systems such as vegetated filter strips, grass swales, and infiltration/ sedimentation areas in suitable open space areas, overland flow channels, and landscaping adjacent to parking lots and streets.

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Policy IU-5.3 In new developments, minimize the amount of impervious area that is directly connected to piped or channelized drainage systems.

Policy IU-5.4 Evaluate any existing environmental degradation or potential degradation from current or planned storm drain and storage control facilities in wetlands or other sensitive environments.

Policy IU-5.5 Require that development projects consider the appropriateness of the channelization of stormwater runoff to facilitate its possible capture and reuse for on-site irrigation and other purposes.

Policy IU-5.6 Implement environmentally and economically efficient stormwater treatment systems, whenever practical (such as artificial marshland sewer treatment).

Policy IU-5.7 Require developers to obtain a NPDES permit prior to moving construction equipment onto a development site. The NPDES permit shall be retained at the construction site throughout the construction period, and a copy shall be filed with the City Engineer.

Policy IU-5.8 During construction projects, ensure compliance with all terms and conditions outlined in the NPDES permit, including the implementation of the latest best management practices and determination of need for any additional water quality management plans to reduce pollutants and urban runoff flows to the maximum extent practicable.

Policy IU-5.9 Require that new developments employ the most efficient drainage technology to control drainage and minimize damage to
environmentally sensitive areas.

Policy IU-5.10 Require that individual project owners and operators handle, store, apply, and dispose of all pest control, herbicide, insecticide, and other similar substances according to all federal, state, and local regulations.

Public Safety Element
Policy PS-2.1 Maintain and continuously update the City’s floodplain safety hazards maps and dam inundation maps in concert with FEMA map
amendments, improvements to local drainage facilities, and updated flood studies from individual projects or the State of California.

Policy PS-2.2 Evaluate, on a project-by-project basis, whether new development should be located in a flood hazard zone and identify and require construction methods or other appropriate methods to minimize the risks of damage for projects located in flood zones.

Policy PS-2.3 Require adherence to the California Building Code, Municipal Codes, FEMA flood control guidelines, and Corona Floodplain Management Ordinance for the purposes of avoiding or minimizing the risk of damages to structures, injury, or loss of life.

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Policy PS-2.4 Locate, when feasible, new essential public facilities outside of flood zones; for those that must remain or are built in flood hazard zones, harden structures to maintain the structural and operational integrity of such public facilities in case of flooding.

Policy PS-2.5 Identify vulnerable structures, infrastructure, and utilities in areas of special flood hazards and encourage the retrofit or upgrade of such structures and infrastructure to minimize damages and reduce the risk or injury or death from flooding.

Policy PS-2.6 Prohibit the alteration of natural floodplains or improved drainage areas or the allowance of encroachments by structures without determination by the Floodplain Administrator that such actions will not be detrimental to public health and safety.

Policy PS-2.7 Establish and maintain cooperative working relationships among public agencies with responsibility for flood protection, including Riverside County Flood Control District, County Public Works, neighboring jurisdictions, and other entities.

Healthy Community Element
Policy HC-2.3 Prioritize local and regional efforts, in cooperation with regional agencies, to remediate or treat contaminated surface water, groundwater, or soils to state and federal standards, and ensure that drinking water is safe and healthful to meet all local, state, and federal health standards
Policy HC-2.7 Keep up to date on new and amended regulations issued by state and federal regulatory agencies with respect to air, water, and other pollutants and permissible exposure; revise local ordinances and development requirements as needed to reduce exposure to pollution.

Policy HC-5.4 Establish agreements with partner agencies to provide public facilities, services, and amenities within the city. This includes public education, health services, flood protection, energy, technology and communications services, and other services as appropriate.

Environmental Resources Element
Policy ER-1.1 Continually monitor the implementation and enforcement of water quality regulations by appropriate County, state, and federal agencies to prevent additional pollution of the City’s hydrologic resources, including aquatic environments, underground water basins, and surface waters.

Policy ER-1.2 Require all public and private grading and construction activities to minimize adverse impacts on the City’s water resources through the use of best management practices, as established and updated from time to time by the City of Corona.

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Policy ER-1.3 Implement standard conditions of approval on development and related projects that require appropriate mediation strategies if soil or groundwater contamination is encountered during project grading and construction.

Policy ER-1.4 Prohibit the discharge of toxins, debris, refuse, and other contaminants into watercourses, other drainages, water bodies, and groundwater basins. Work with appropriate entities to ensure the cleanup of contamination of existing water resources.

Policy ER-1.5 Support the Santa Ana Watershed Project Authority to advance efforts to achieve a watershed that is sustainable, drought-proof, salt-balanced, and capable of providing water resources for multiple benefits for current and future populations.

Policy ER-1.6 Provide active leadership in the regional coordination of water resource management and sustainability efforts affecting Riverside County and continue to monitor and participate in, as appropriate, regional activities to ensure a long-term reliable and sustainable supply of water.

Policy ER-1.7 Support efforts to create additional water storage and facilities where needed, in cooperation with federal, state, and local water authorities.

Additionally, support and/or engage in water banking in conjunction with these agencies where appropriate and as needed.

Policy ER-2.1 Sustain the quantity and quality of surface water and groundwater resources within the City of Corona and its sphere of influence for present and future uses.

Policy ER-2.2 Balance consideration of water supply requirements between urban, agricultural, and environmental needs so that sufficient supply is available to meet each of these different demands.

Policy ER-2.3 Implement water conservation through a wide range of regulations, public and business education, fiscal techniques, and implementing programs.

Policy ER-2.4 Require the use of water conservation features and materials in the design and construction of all public buildings, projects, and site development while encouraging their use citywide.

Policy ER-2.5 Require the use of reclaimed water in outdoor common areas and landscape treatments for homeowners associations, public facilities, commercial and industrial uses where feasible.

Policy ER-2.6 Provide ample opportunities to educate the public and businesses about the importance of water conservation, and the devices available for conservation purposes.

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Policy ER-2.7 Promote resources that offer incentives for property owners and businesses to install and upgrade water efficient fixtures in their buildings, equipment, and landscaping. devices.

Policy ER-2.9 Support efforts to create additional water storage where needed, in cooperation with federal,state, and local water authorities. Additionally, support and/or engage in water banking in conjunction with these agencies where appropriate and as needed.

Policy ER-3.1 In cooperation with RCFCWCD, participate in development, maintenance, and implementation of facilities and programs to recharge City aquifers underlying the City and SOI.

Policy ER-3.2 Incorporate natural drainage systems (vegetated swales, small ponds, etc.) into developments, where appropriate and feasible, that offer opportunities for groundwater recharge.

Policy ER-3.3 Retain stormwater and runoff at or near the site of generation for percolation into the aquifer to conserve it for future uses and to mitigate adjacent flooding.

Policy ER-3.4 Use natural approaches to managing streams (such as nonchannelization strategies, softbottom streams, native vegetation, etc.), to the maximum extent possible, where groundwater recharge is likely to occur.

Policy ER-3.5 Cooperate with groundwater sustainability members to jointly pursue projects that will contribute to the long-term sustainability (recharge and safe yield) of the basins underlying Corona and SOI areas.

Policy ER-3.6 Manage the City’s reliance on imported water supplies, to the extent feasible and practical, through an enhanced focus on water conservation, groundwater recharge, and reclaimed water use.

Policy ER-4.1 Require urban uses to have a sufficient distance from a floodway boundary to ensure adequate protection of life, property, and habitat values.

Policy ER-4.2 Avoid altering floodways or channelization wherever possible; however, limit alterations to those that meet the following criteria:
• Alterations necessary for the protection of public health and safety only after all other options are exhausted
• Alterations essential to public service projects where no other feasible construction method or alternative project location exists • Projects where the primary function is the improvement of fish and wildlife habitats
Policy ER-4.3 Design alterations and improvements to floodways so that they avoid adverse environmental effects to the maximum extent feasible, considering the following environmental factors:
• Stream scour

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• Erosion protection and sedimentation
• Wildlife habitat and linkages
• Groundwater recharge capability
• Adjacent property
• Natural designs (e.g., soft riparian bottoms and gentle bank slopes, and landscaping with native plants
Policy ER-4.4 Preserve and enhance existing native riparian habitat and prevent obstruction of natural watercourses to the extent feasible in new private and public developments or implement on-site replacement as mitigation.

Policy ER-4.5 Allow variances from city development standards on land area restricted from development due to its retention as a natural floodway, floodplain, or watercourse to encourage the preservation of natural watercourses without creating undue hardship on property owners.

Policy ER-5.1 Prohibit encroachment of development into wetlands; provide buffer zones, setbacks, or other effective techniques in project siting and design to minimize direct and indirect effects to wetland habitats.

Policy ER-5.2 During the development review process, ensure compliance with the Clean Water Act’s Section 404 in terms of wetlands mitigation policies and policies concerning fill material in jurisdictional wetlands.

Policy ER-5.3 Ensure compliance with habitat mitigation plans accepted by the applicable state and federal regulatory agencies that meet established ratios for wetland enhancement/restoration and on-/off-site compensation for the loss of wetland functions and values.

Policy ER-5.4 Consider wetlands for use as natural water treatment areas that will result in improvement of water quality.

Policy ER-5.5 Prohibit the planting of invasive, nonnative species in areas that would encroach and affect watercourses, their banks, and riparian areas.

4.10.5 PROJECT DESIGN FEATURES
PDF HYD-1: According to the Hydromodification Low Impact Development (LID) requirement, the proposed BPI development will install a system of catch basin inlets and storm drain pipes proposed to convey the runoff across the site to the designated discharge points. In addition, 10 Biotreatment Units (Modular Wetland System) and two underground detention chambers will be installed to provide water quality treatment for the proposed Drainage Management Areas (DMA).

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4.10.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City of Corona, significant hydrology and water quality impacts would occur if the proposed Project or any Project-related component would:

Threshold HYD-1 Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality? Threshold HYD-2 Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin ?
Threshold HYD-3 Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would:
i. Result in substantial erosion or siltation on- or off-site? Threshold HYD-4 ii. Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site?
Threshold HYD-5 iii. Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff?
Threshold HYD-6 iv. Impede or redirect flood flows?
Threshold HYD-7 In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation?
Threshold HYD-8 Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan?

METHODOLOGY
The analysis of hydrologic and water quality impacts is based on information and data contained in the Drainage Report and the WQMP (Appendix J and Appendix K, respectively), including site runoff estimates, soil properties, impervious surface area, and water quality BMPs. The Drainage Report used methodologies outlined in the Riverside County Hydrology Manual to perform hydrologic and hydraulic calculations and estimated storm flows using the CIVILCADD/CIVILDESIGN Engineering Software, Version 7.1 to compile storm discharge generated by the Rational Method. The WQMP was prepared in accordance with requirements of the Riverside County MS4 Permit using the SARWQCB’s WQMP template.

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4.10.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior
EIR?
Would the Modified
Project be
implemented under
changed
circumstances
resulting in new or
more severe impacts
requiring revisions
to the Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the
Modified Project
requiring
revisions to the
Prior EIR?
Would the
Modified Project
result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

HYD-1 Violate any water quality
standards or waste
discharge requirements
or otherwise
substantially degrade
surface or groundwater
quality?
HYD-2 Substantially decrease
groundwater supplies or
interfere substantially
with groundwater
recharge such that the
project may impede
sustainable groundwater
management of the basin
?
HYD-3 Substantially alter the
existing drainage pattern
of the site or area,
including through the
alteration of the course of
a stream or river or
through the addition of
impervious surfaces, in a
manner which would:
i. Result in substantial
erosion or siltation onor off-site?
HYD-4 ii. Substantially increase
the rate or amount of
surface runoff in a
manner which would
result in flooding on- or
off-site?

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Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior
EIR?
Would the Modified
Project be
implemented under
changed
circumstances
resulting in new or
more severe impacts
requiring revisions
to the Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the
Modified Project
requiring
revisions to the
Prior EIR?
Would the
Modified Project
result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

HYD-5 iii. Create or contribute
runoff water which
would exceed the
capacity of existing or
planned stormwater
drainage systems or
provide substantial
additional sources of
polluted runoff?
HYD-6 iv. Impede or redirect
flood flows?
HYD-7 In flood hazard, tsunami,
or seiche zones, risk
release of pollutants due
to project inundation?
HYD-8 Conflict with or obstruct
implementation of a
water quality control
plan or sustainable
groundwater
management plan?

IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
Impact HYD-1: Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality? Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

Construction
Construction of the GRRSP Planning Area and the proposed BPI development would require grading and excavation of soils, which would loosen sediment and then have the potential to mix with surface water runoff and degrade water quality. Additionally, construction would require the use of heavy equipment and construction-related chemicals, such as concrete, cement, asphalt, fuels, oils, antifreeze, transmission fluid, grease, solvents, and paints. These

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potentially harmful materials could be accidentally spilled or improperly disposed of during construction and, if mixed with surface water runoff, could wash into and pollute waters.

Consistent with the 2001 EIR, short-term storm water pollutant discharges from each individual site within the GRRSP Planning Area would be prevented through compliance with the applicable NPDES permitting process. Coverage with applicable permits would prevent sedimentation and soil erosion through implementation of an SWPPP and periodic inspections by RWQCB staff. During the construction period, the development associated with the GRRSP would utilize a series of BMPs to reduce erosion and sedimentation consistent with those identified in the Certified EIR. To ensure that future development within the GRRSP Planning Area obtains coverage under the NPDES General Construction permit, implementation of the 2001 EIR Mitigation Measures 4.11.1A, 4.11.3A, 4.11.3.B, and 4.11.4A have been identified.

As a result, with implementation of mitigation measures 4.11.1A, 4.11.3A, 4.11.3.B, and

4.11.4A the Modified Project would not violate any water quality standards or waste discharge requirements, potential water quality degradation associated with construction activities would be minimized, and impacts would be less than significant.

Operation
The Modified Project would include the proposed BPI development consisting of five industrial buildings totaling in approximately 746,167 square feet within the business industrial designation. The GRRSP Planning Area is comprised of approximately 160.0 acres of undeveloped vacant land, and has been modified for the future 5.5 acres general commercial parcel north of Green River Road and the 20.39 acres Estate Residential situated on the southern portion of the property.

Potential pollutants associated with the proposed uses include various chemicals from cleaners, pathogens from pet wastes, nutrients from fertilizer, pesticides and sediment from landscaping, trash and debris, and oil and grease from vehicles. If these pollutants discharge into surface waters, it could result in degradation of water quality.

Section 15.36 of the City’s Municipal Code requires implementation of Water Quality Management Plan (WQMP) based on the anticipated pollutants that could result from new development and redevelopment projects. The Project’s WQMP was created to comply with the requirements of the City of Corona, the Riverside County Water Quality Management Plan, and the NPDES Areawide Stormwater Program. The BMPs would include pollutant source control features and pollutant treatment control features.

The source control BMPs would minimize the introduction of pollutants that may result in water quality impacts; and treatment control BMPs that would treat stormwater runoff. For the purposes of stormwater quality, an underground bioretention/biofiltration system is proposed.

The proposed BPI development would include the project design features, PDF HYD-1, of which would consist of 10 Biotreatment Units (Modular Wetland System) and two

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underground detention chambers to provide water quality treatment for Drainage Management Areas (DMA) 2 through DMA 11. DMA 1 was identified as a Self-Treating Area due to the lack of impervious surfaces and requires no BMP. The proposed biotreatment units and underground detention chambers would capture, treat, and slow stormwater runoff for the 10- year and 100-year storm events.

However, in order to prevent impacts to operational water quality, the Modified Project would be required to prepare a site-specific Water Quality Management Plan (WQMP) to identify low-impact development storm water retention strategies and appropriate hydromodification controls to mitigate potential violations of water quality standards or waste discharge requirements. Consistent with the 2001 EIR, applicable Mitigation Measures 4.11.1.B,

4.11.2.A, 4.11.2B, 4.11.3.C, 4.11.3.D, and 4.11.4B have been identified. With implementation of PDF HYD-1, NPDES requirements and the WQMP, pursuant to the City Municipal Code, and City Council Ordinance No. 2291 and 2828 (included as 2001 EIR mitigation measures

4.11.1A, 4.11.1.B, 4.11.2.A, 4.11.2B, 4.11.3A, 4.11.3.B, 4.11.3.D, and 4.11.4A); which would be verified during the plan check and permitting process for the Modified Project, the Modified Project would not violate any water quality standards or waste discharge requirements, and impacts would be less than significant.

Therefore, no new or substantially greater impacts related to the violation of any water quality standards or waste discharge requirements would occur with implementation of the proposed Modified Project when compared to those identified in the 2001 EIR. The proposed Modified Project’s impacts are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged from that cited in the 2001 EIR.

Mitigation Measures
The following Mitigation Measures from the previously certified 2001 EIR are applicable to the Modified Project are shown below and further described in detail Section 4.10.9:
• 4.11.1A, 4.11.1.B, 4.11.2.A, 4.11.2B, 4.11.3A, 4.11.3.B, 4.11.3.D, and 4.11.4A Impact HYD-2: Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin ? Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The proposed Project is located within the Coastal Plain of Orange County westerly adjacent to the Temescal Groundwater Basin. As analyzed in the Drainage Report and WQMP, development of the GRRSP Planning would introduce approximately 36.65 acres of impervious surfaces to the site. Buildout of the GRRSP Planning would require 107.02 acres of irrigated surfaces and landscaping of the proposed BPI development would achieve the

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minimum 15.65 acers of irrigated landscape. Future development within the GRSSP Planning Area would be required to implement a project-specific WQMP as previously stated to achieve the required impervious surface. The proposed BPI development would include the project design features, PDF HYD-1, of which would consist of 10 Biotreatment Units (Modular Wetland System) and two underground detention chambers to provide water quality treatment for Drainage Management Areas (DMA) 2 through DMA 11. DMA 1 was identified as a SelfTreating Area due to the lack of impervious surfaces and requires no BMP. In total, the proposed BPI development would incorporate approximately 16.1 acres of landscape acreage, thereby above the required acreage according the WQMP. Furthermore, the Project site is not located within an area known for hydrogeologic groundwater. As a result, the Modified Project would not decrease groundwater supplies or interfere substantially with groundwater recharge; and the Project would not impede sustainable groundwater management of the basin.

Therefore, the Project would result in a less than significant impact on groundwater supplies and groundwater recharge. No mitigation is required.

The proposed Modified Project’s impacts are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged from that cited in the 2001 EIR.

Mitigation Measures
No mitigation measures are required.

Impact HYD-3: Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would:
i. Result in substantial erosion or siltation on- or off-site? Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

Although the GRRSP Planning Area does not include, a natural stream, river or other body of water, the Project site does contain several ravines (non-wetland waters) which convey natural drainage across the Modified Project site to off-site tributaries. Under existing conditions, development of the Modified Project would alter the course of a stream thereby impacting the existing drainage pattern.

As previously discussed, a SWPPP would be implemented during construction to control drainage and maintain drainage patterns across the Modified Project (MM 4.11.3A). As discussed in the WQMP (Appendix K) existing drainage patterns would remain unchanged, which would result in a decrease in time of concentration due to increase in imperviousness.

To address this increase, the BPI development, proposes a biofiltration system that would

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capture runoff prior to discharge off-site (PDF HYD-1). All storm water runoff will be carried via typical street sections and an onsite storm drain system. In addition, the Drainage Report determined, a 10-year storm event would be contained below the top of curb and a 100-year storm event would be protected from the industrial building pads. Additionally, the installation of onsite landscaping, a biofiltration system, and catch basins would be designed to accommodate the increased flow volume. Moreover, impacts from the erosion of existing natural downstream canyons and hillsides will be mitigated to a less than significant level by properly designed grading, detention basins, energy dissipators and erosion protection rip-rap pads at the outlet of storm drain system (MM HYD-1).

Additionally, according to the FEMA’s FIRM Map #06065C0668G, #06065C0669G, and #06065C1335GG the Project site is zoned as Flood Zone X, area with minimal flood hazard.

The City would review the Modified Project permit applications to ensure the proposed BPI and future development within the GRRSP would not be subject to significant flood hazard and structures would be floodproofed and would not impede or redirect flood flows. As such, with implementation of mitigation measures MM HYD-1, and 4.11.3A, the Modified Project would result in a less than significant impact on the existing drainage pattern.

The proposed Modified Project’s impacts are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged from that cited in the 2001 EIR.

Mitigation Measures
The following Mitigation Measures from the previously certified 2001 EIR are applicable to the Modified Project are shown below and further described in detail Section 4.10.9:
• 4.11.3A
The Modified Project introduces the following Mitigation Measures and are further described in detail Section 4.3.10.
• MM HYD-1
Impact HYD-4: ii. Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site?
Impact HYD-6: iv. Impede or redirect flood flows?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

As discussed previously, the Modified Project site is classified as Flood Zone X, area of minimal flood hazard. In addition, the Modified Project site does not include, and is not adjacent to, a body of water such as a natural stream or river that would increase the potential for flooding. Also, as discussed previously, the Modified Project would introduce

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approximately 36.65 acres of impervious surfaces to the GRRSP Planning Area, which would increase stormwater runoff from the Project site. However, the Modified Project, consistent with the 2001 EIR, would implement mitigation to reduce flooding hazards on- or offsite impacts to a less than significant level. As detailed below, MM 4.11.2.A requires that all proposed storm drain facilities and equipment shall be designed, installed and maintained in a manner to convey peak flows estimated for the Modified Project. In addition, the MM 4.11.2A also requires future development of the GRRSP Planning Area drainage plans shall be submitted to the City for review and approval prior to the issuance of grading permits. As it relates to the proposed BPI development, as previously stated, will incorporate PDF HYD-1 for the proposed on-site storm drain system consisting of catch basin inlets and storm drain pipes proposed to convey the runoff across the site to the designated discharge points. In addition, 10 Biotreatment Units (Modular Wetland System) and two underground detention chambers will be installed to provide water quality treatment for the proposed Drainage Management Areas (DMA). PDF HYD-1 shall be constructed to accommodate storm flows from the site designed, installed and maintained in a manner to reduce on-site runoff to a level that can be accommodated by the existing culverts beneath Green River Road.

Adherence to the existing requirements and implementation of the post construction stormwater requirements would be confirmed during Project plan check prior to Project approval. Therefore, with implementation of mitigation measure MM4.11.2A and project design PDF HYD-1, the Modified Project would result in a less than significant impact on flood flows and flooding hazards on- or offsite.

The proposed Modified Project’s impacts are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged from that cited in the 2001 EIR.

Impact HYD-5: iii. Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The Modified Project site would include development of approximately 36.65 acres of impermeable surfaces, which would be an increase from the existing undeveloped vacant impervious surface area. Project site existing drainages flow from the south to a low point within the northern portion of the site, ultimately conveyed into the existing drainage pipelines/culverts crossing Green River Road and to SR 91.

Use of the subsurface infiltration chamber would regulate the rate and velocity of stormwater flows and would control the amount of discharge into the off-site drainage system. As discussed above, the Modified Project would not result in significant impacts related to water

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quality. In addition, the drainage facilities proposed for the BPI development have been sized to adequately accommodate the stormwater flows from the proposed development and are consistent with the County drainage plans and MS4 permit requirements. The proposed oversized infiltration system would accommodate existing stormwater infrastructure capacity by holding the entire design capture volume in the chamber and allow high flows to discharge from the site at a reduced flowrate. The existing southerly drainage pattern is not maintained; however, times of concentration are preserved through the use of dual underground infiltration systems. Therefore, impacts would be less than significant.

Mitigation Measure
No mitigation measures are required.

Impact HYD-7: In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

As discussed previously, the Modified Project site is classified as Flood Zone X, area of minimal flood hazard. The GRRSP Planning Area is located approximately 27 miles northeast of the Pacific Ocean. Therefore, the Modified Project is not located within a tsunami zone.

Similarly, a seiche is the sloshing of a closed body of water from earthquake shaking. Seiches are of concern relative to water storage facilities because inundation from a seiche can occur if the wave overflows a containment wall, such as the wall of a reservoir, water storage tank, dam, or other artificial body of water. The nearest body of water is the Prado Reservoir, approximately 1.1 miles to the north. According to the City’s General Plan, the Project site is not within a dam inundation zone, nor in the vicinity of any impounded bodies of water; therefore, the Project is not at risk of a seiche.

The proposed Modified Project’s impacts are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged from that cited in the 2001 EIR.

Impact HYD-8: Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

As previously discussed, the Modified Project and BPI development would comply with the Construction General Permit by developing and implementing a site-specific SWPPP and construction stormwater BMPs throughout the construction phase. The Modified Project and BPI development would also comply with the MS4 Permit by incorporating LID BMPs into project design, which would avoid or minimize the amount and type of pollutants leaving the

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project, entering receiving waters, and impacting water quality and beneficial uses defined for these waters by the Basin Plan. In addition, LID BMPs would allow stormwater infiltration into the local aquifer and minimize or avoid impacts to groundwater quality, and to beneficial uses of the Coastal Plain of Orange County Basin.

The Modified would not include a groundwater well, and the Project would not demand water at a rate exceeding what the City of Corona could supply (see Section 4.19, Utilities and Service Systems, for discussion of Project water demands relative to water supplies). The Modified Project would not conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan; no impact would occur, and mitigation is not required.

4.10.8 CUMULATIVE IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Less Than Significant Impact/No Changes or No New Information Requiring Preparation of an EIR. As concluded in the preceding analysis, the Modified Project would not change the significance of Hydrology and Water Quality impacts as compared to the prior 2001 EIR.

The geographic scope for cumulative impacts on hydrology and water quality includes the Santa Ana River Watershed. Implementation of the Modified Project would include compliance with all required laws, permits, ordinances, and plans, such as the MS4 Permit, and Construction General Permit requirements, that would reduce incremental effects to hydrology and water quality. The Modified Project would result in an increase of impervious surfaces within the watershed and is required to include pervious surfaces to retain storm water drainage on site. This increase in impervious surfaces with implementation of the proposed BMPs (PDF HYD-1) as required by the MS4 Permit would not lead to an increase in surface runoff or significant pollutant loadings.

Other future developments within the urban and developed subwatershed would have similar effects as the Modified Project. The areas surrounding the Modified Project area are of similar urban nature, and any future development would also include compliance with all required laws, permits, ordinances, and plans, such as the MS4 Permit, and Construction General Permit requirements, in order to meet runoff requirements. This would help reduce impacts to water quality and retain runoff and ensure that the incremental effects of individual projects do not cause a substantial cumulative impact related to water quality. For example, each related project would be required to develop a SWPPP (for construction), a WQMP (for operation), and a hydrology report, and would be evaluated individually to determine appropriate BMPs and treatment measures to reduce impacts to surface water quality and hydrology. In addition, cities review all development projects on a case-by-case basis to ensure that sufficient local and regional drainage capacity is available. Furthermore, the analysis in a Project’s hydrology

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report is cumulative in nature due to the project and existing developments impact on storm drainage within the watershed area.

Combined impacts to water quality, to the storm drain system, and from the creation of flooding hazards from past, present, and future projects would be less than significant cumulatively. Therefore, because water quality, drainage, and flooding would not be adversely affected by the Modified Project, the proposed Project’s contribution to cumulative hydrology and water quality impacts would not be cumulatively considerable.

4.10.9 MITIGATION MEASURES IDENTIFIED IN PRIOR EIR APPLICABLE TO

MODIFIED PROJECT

4.11.1A: The project applicant shall obtain all required permits and clearances from the Corps, the RWQCB, and the CDFG prior to the disturbance of any existing drainage.

4.11.1.B: Drainage facilities within engineered slopes/fills shall be designed and installed in accordance with the City of Corona standards.

4.11.2.A: All proposed storm drain facilities and equipment shall be designed, installed and maintained in a manner to convey peak flows estimated for the project.

Drainage plans shall be submitted to the City for review and approval prior to the issuance of grading permits.

4.11.2B: On-site detention basins shall be constructed to accommodate storm flows from the project site. Such facilities shall be designed, installed and maintained in a manner to reduce on-site runoff to a level that can be accommodated by the existing culverts beneath Green River Road. All required drainage structures shall be designed, installed, and maintained in accordance with applicable City of Corona standards.

4.11.3A: The construction and/or grading contractor shall establish and implement a construction Storm Water Pollution Prevention Plan (SWPPP) and postconstruction Water Quality Management Plan (WQMP) in accordance with NPDES permit issued by the Santa Ana RWQCB.

4.11.3.B: In accordance with issuance of a NPDES permit, the construction and/or grading contractor shall establish and implement specific Best Management Practices (BMP) at time of project implementation. Construction erosion and sediment control plans shall be submitted to the City for review and approval prior to the issuance of grading permits. BMPs to minimize erosion and/or sedimentation impacts shall include (but not be limited to) the following:
• Collection of runoff entering developing areas into surface and subsurface drains for removal to nearby drainages.

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• Capture of runoff above steep slopes or poorly vegetated areas and conveyance to nearby drainages. • Conveyance of runoff generated on paved or covered areas via drains and swales to natural drainage courses.
• Revegetation of disturbed areas and vegetation of non-disturbed but highly erosive areas.
• Use of drought tolerant plants and irrigation systems which minimize runoff.
• Use of other erosion control devices such as rip-rap, gabions, concrete lining, small check dams, etc. to reduce erosion in gullies and active stream channels.
• During the time that on-site soils are exposed, the soil surface shall be approximately 2 feet below the surrounding grade. Any storm water falling on exposed soils will infiltrate on site.
• To the maximum extent possible, on-site vegetation shall be maintained. • Limit grading disturbance to essential project area.
• Limit grading activities during the rainy season.
• Balance and limit, to the extent possible, the amount of cut and fill. • Water entering and exiting the site shall be diverted through the placement of interceptor trenches or other erosion control devices. • Water shall be sprayed on disturbed areas to limit dust generation. • The construction entrance shall be stabilized to reduce tracking onto adjacent streets.
• Dikes, drains, swales or other features shall be used to divert and/or redirect runoff.

4.11.3.C: Manufactured slopes shall be stabilized. Where appropriate, retaining wall designs shall include waterproofing and weep holes, subdrains or backdrains for relieving possible hydrostatic pressures.

4.11.3.D: Manufactured slopes shall be revegetated to help ensure stability. Revegetation plans shall be submitted to the City for review and approval prior to the issuance of grading permits. Plant selection shall comply with the Plant Palette contained in Section 4.3.6 of the Green River Ranch Specific Plan.

4.11.4A: Development within the Specific Plan area shall comply with applicable provisions of the NPDES permit and the applicable standards and regulations of responsible agencies.

4.11.4B: Precast “stormceptors” shall be installed in parking areas and/or in areas where fuels, oils, solvents or other pollutants may enter the stormwater stream (i.e., gas stations, loading areas). Such devices shall be adequately maintained

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(including the cleaning/replacing of absorbent fiberglass “pillows” and periodic removal of accumulated sand and silt).

4.10.10 NEW MITIGATION MEASURES APPLICABLE TO MODIFIED PROJECT MM HYD-1: Erosion of existing natural downstream canyons and hillsides will be mitigated by properly designed grading, detention basins, energy dissipators and erosion protection rip-rap pads at the outlet of storm drain system.

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4.11 LAND USE AND PLANNING

4.11.1 INTRODUCTION
This section provides a summary of applicable impacts and mitigation measures from the 2001 EIR, an overview of existing land use and planning within the GRRSP Planning Area and surrounding region, a summary of applicable regulations, and analyses of potential changes in impacts to land use and planning from implementation of the Modified Project in comparison to the Approved Project. The Public Scoping Meeting comments from Jeffrey Meissner, Craig Reiter were received pertaining to this topic. The NOP comment letters from Southern California Association of Governments were received pertaining to this topic.

4.11.2 SUMMARY OF IMPACTS AND MITIGATION MEASURES FROM THE 2001 EIR
The 2001 EIR determined the Approved Project would result in no impact related to land use and planning as follows.
a) Physically divide an established community?
The 2001 EIR identified the existing a horse boarding operation operating in the northern, flatter, portion of the Approved Project site south of Green River Road that is no longer in operation. The St. James Orthodox Christian Monastery was identified as occupying a former restaurant on site that has ceased operations. The 2001 EIR acknowledged implementation of the Approved Project would necessitate removal of the facilities associated with these former uses but determined did not represent an identified community. Therefore, the 2001 EIR concluded the Approved Project would result in no impact related to physically dividing an established community.
b) Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect?
Prior to approval of the Approved Project, approximately 2 acres of the GRRSP Planning Area was located in the City’s limits and the remaining approximately 166 acres was located in unincorporated Riverside County. The 2001 EIR determined the Approved Project’s proposed land uses would conflict with the Riverside County’s Zoning Ordinance, but the conflict was considered a less than significant impact because the Approved Project’s applicant proposed annexation of the Approved Project site into the City as well as adoption of the GRRSP. The GRRSP would modify land use designations in the Planning Area to accommodate the uses proposed in the GRRSP. The 2001 EIR considered the conflict to be a less than significant impact given the Approved Project would be annexed into the City of Corona and adoption of

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the GRRSP would provide land use regulation and development standards for future development of the uses contained in the GRRSP.

Cumulative Impacts
The 2001 EIR determined there were no other development projects that when considered together with the Approved Project would create a significant land use impact over and above the project specific impact analyses conducted for the Approved Project and no mitigation was required. Consequently, cumulative impacts regarding land use compatibility was determined to be less than significant.

4.11.3 ENVIRONMENTAL SETTING
The GRRSP Planning Area encompasses the area adjacent to Green River Road, east of the SR-91/Green River Road interchange and west of Dominguez Ranch Road. The Project site is largely undeveloped. However, the site is surrounded by residential development to the north (beyond the SR-91), vacant and disturbed land to the south, residential and commercial development to the east, and vacant and disturbed land to the west. Vacant areas are mostly covered with native vegetation, much of which consists of low-lying scrub. Elevations on site range from 1,110 feet in the southwestern corner of the property to 515 feet in the northeastern corner of the property.

The southern portion of the property is in an undeveloped natural condition dominated by rugged hillside terrain of the Santa Ana Mountains vegetated by grass, brush, scrub, and chaparral. Due to the topography of the property, development has been limited to the northern portion of the Specific Plan area. The eastern portion of the GRRSP Planning Area is occupied by two single-family residences. Several equestrian stables, one above water reservoir and a concrete lined stormwater basin related to prior horse boarding operations remain on-site.

The existing GRRSP (i.e., Approved Project) land use designations include General Commercial (GC) and Mixed-Use in existing PAs 1, 2, 3, 4 and 5 (approximately proposed PAs 1, 2 and 3), MU in PA 7 (approximately proposed PA 4), and Estate Residential (ER) in PA 6 (approximately proposed PAs 5 and 6) as summarized in Table 4.11-1. The GC and MU land uses allow a flexible mix of retail, service and support commercial, light industrial, hotel/motel, or office uses and a 150-room hotel. The GC land use is intended to provide services for travelers and local residents including, but are not limited to service stations, restaurants (fast food, turnover, and high quality), and neighborhood retail. The ER allows up to 32 dwelling units (DUs). The ER area in the southernmost portions of the GRRSP was intended to be developed with large lots resulting in large areas of open space.

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Table 4.11-1: Comparison of the Approved and Modified Project GRRSP Land Uses Approved Project Modified Project
Acreage
Land Use/
DUs or SF Acreage
Land Use/
DUs or SF
Approved: PAs 1, 2, 3, 4, 5 Modified: PAs 1, 2, 3

61.22 Hotel/150 rooms;
GC/19,600 sf;
MU1/491,300

49.31 BPI/ 746,167 sf
Approved: PA 7 Modified: PA 4

5.91 MU1/10,000 sf 5.5 GC/19,600 sf
Approved: PA 6 Approved: PA 5

98.2 ER/32 DUs 20.39 ER/32 DUs
Approved: NA Modified: PA 5
NA NA 83.34 Open Space
DUs = dwelling units SF = square feet NA = not applicable PA=planning area 1 Includes a mix of retail, service and support commercial, light industrial, hotel/motel, or office uses and a 150-room hotel.

4.11.4 PROJECT DESIGN FEATURES (PDF)
PDF LU-1: GRRSP as Amended: The proposed GRRSP as amended (i.e., Modified Project) is intended to provide for the orderly and efficient development of the Green River Ranch property in accordance with the provisions of the City of Corona General Plan. The proposed GRRSPA contains design guidelines and development standards which apply only to properties within the GRRSP Planning Area. The guidelines and standards are intended to implement the goals, objectives, and policies of the City’s General Plan.

The proposed GRRSPA contains a number of development standards and design guidelines related to visual quality as presented previously in PDF AES-1 (see Section 4.1). Subsection

2.1 of the GRRSPA presents the Land Use Plan followed by the Land Use Plan Designations in Section 2.2.1. As detailed in Section 2.2.1, the land use plan designations include the following:
• Business Park Industrial. The GRRSPA includes 49.31 acres of Business Park Industrial (BPI) uses on the south side of Green River Road. The BPI category is intended to accommodate single- and multitenant light industrial, warehouse, and incubator uses with supporting offices. Limited sales and services for industrial, construction and or similar types of uses are also allowed. These uses offer special opportunities for development within the GRRSP Planning Area and have been identified as appropriate given their proximity to the 91 Freeway. This type of development will provide significant economic and employment base opportunities within the City of Corona and Riverside County, allowing Green River Ranch to take

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advantage of the explosive growth of industrial, incubator, and small entrepreneurial businesses expected to continue through the 21st Century. • General Commercial. The GRRSPA includes 5.5 acres of General Commercial (GC) uses on the north side of Green River Road. The GC area is easily accessible from SR91 and is intended to provide services for travelers and local residents. Planned uses include, but are not limited to, a service stations, restaurants (fast food, turnover, and high quality), and neighborhood retail.
• Estate Residential. The GRRSPA includes 20.39 acres of Estate Residential (ER) uses in the central portion of the Planning Area and south the planned BPI areas. Business Park Industrial. This land use is intended to provide property for single-family detached residences on individual lots. Portions of the residential lots would remain as natural open space to allow the preservation of natural drainage features and partial use of the area by wildlife.
• Open Space General. The GRRSPA includes 83.34 acres of Open Space General in the southern most half of the Planning Area and south of the EIR uses. The Open Space General area would accommodate land permanently committed to protecting the natural vegetation communities and habitat. The designation will protect habitat, topography, scenic quality, and other natural resources and allow for wildlife movement in and through the area.

Subsection 3.2 of the GRRSPA presents the Permitted Uses in Each Land Use Designation.

Table 2 - Permitted Uses in Subsection 3.2 details the specific permitted and conditionally permitted uses allowed within each of the four land use categories proposed in the GRRSPA.

4.11.5 EXISTING REGULATIONS, PLANS, PROGRAMS, AND POLICIES

FEDERAL REGULATIONS
There are no federal land use regulations that apply to the Modified Project.

STATE REGULATIONS
There are no State land use regulations that apply to the Modified Project.

REGIONAL REGULATIONS
Southern California Association of Governments
The Southern California Association of Governments (SCAG) is a council of governments representing Imperial, Los Angeles, Orange, Riverside, San Bernardino, and Ventura counties.

SCAG is the federally recognized metropolitan planning organization (MPO) for this region, which encompasses over 38,000 square miles. SCAG is a regional planning agency and a

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forum for addressing regional issues concerning transportation, the economy, community development, and the environment. SCAG is also the regional clearinghouse for projects requiring environmental documentation under federal and state law. In this role, SCAG reviews proposed development and infrastructure projects to analyze their impacts on regional planning programs. As the southern California region’s MPO, SCAG cooperates with the South Coast Air Quality Management District, the California Department of Transportation (Caltrans), and other agencies in preparing regional planning documents. SCAG has developed regional plans to achieve specific regional objectives. The plans most applicable to the proposed project are discussed below.

Regional Transportation Plan/Sustainable Communities Strategy In September 2020, SCAG adopted the 2020–2045 RTP/SCS, “Connect SoCal,” which builds upon and expands land use and transportation strategies established over several planning cycles to increase mobility options and achieve a more sustainable growth pattern. The longrange visioning plan balances future mobility and housing needs with goals for the environment, the regional economy, social equity and environmental justice, and public health.

In response to the NOP, SCAG identified specific goals included in Connect SoCal that may be pertinent to the proposed Modified Project as follows:
• Goal #1: Encourage regional economic prosperity and global competitiveness. • Goal #2: Improve mobility, accessibility, reliability and travel safety for people and goods.
• Goal #3: Enhance the preservation, security, and resilience of the regional transportation system.
• Goal #4: Increase person and goods movement and travel choices within the transportation system.
• Goal #5: Reduce greenhouse gas emissions and improve air quality. • Goal #6: Support healthy and equitable communities.
• Goal #7: Adapt to a changing climate and support an integrated regional development pattern and transportation network.
• Goal #8: Leverage new transportation technologies and data-driven solutions that result in more efficient travel.
• Goal #9: Encourage development of diverse housing types in areas that are supported by multiple transportation options.
• Goal #10: Promote conservation of natural and agricultural lands and restoration of habitats.

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LOCAL REGULATIONS
City of Corona General Plan
The current General Plan was adopted by the City in June of 2020, to comply with the requirements of California Government Code § 65300 et seq., which mandates that each California city have a comprehensive, long-range, internally consistent plan for its future development. The General Plan also addresses the provision of services needed and desired by the community to support its ultimate development. The General Plan contains the following elements: Land Use; Housing; Community Design; Historic Resources; Economic Development; Parks, Recreation, Cultural Arts, & Education; Circulation; Infrastructure and Utilities; Public Safety; Noise; Healthy Community; and Environmental Resources.

The General Plan provides the basis for land use designations in the City. As required by state planning law, the General Plan Land Use Plan and the Zoning Code are internally consistent.

The Zoning Ordinance, Title 17 of the Municipal Code, is one of the primary means of implementing the General Plan.

The GRRSP was originally prepared in accordance with the then relevant goals and objectives of the City’s General Plan when adopted in 2001. Given the General Plan was updated in 2020, the GRRSPA’s consistency with applicable General Plan goals and objectives is necessary.

Table 4.11-3 presented in subsection 4.11.7, Impact LU-2, lists the applicable General Plan goals and provides a discussion of how the GRRSPA conforms to them.

4.11.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City of Corona, significant agricultural and forest resources impacts would occur if the proposed Project or any Project-related component would:

Threshold LU-1 Physically divide an established community? Threshold LU-2 Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect?

METHODOLOGY
The potential land use and planning impacts associated with the Modified Project were evaluated through a qualitative comparison of the anticipated project effects with existing site conditions and characteristics of surrounding land uses. The proposed Project was evaluated for consistency with existing land use plans, regulations, and policies applicable to the Project site and its vicinity. Inconsistency with plans and policies alone would not necessarily constitute a significant impact, unless the inconsistency results in what would be considered an adverse physical change to the environment. Significant impacts would occur if the

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proposed Project would result in adverse physical environmental affects in accordance with the thresholds described below.

4.11.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior EIR?
Would the Modified
Project be
implemented under
changed
circumstances
resulting in new or
more severe impacts
requiring revisions to
the Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the Modified
Project requiring
revisions to the
Prior EIR?
Would the
Modified Project
result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

LU-1 Physically divide an
established
community?
LU-2 Conflict with any
land use plan, policy,
or regulation adopted
for the purpose of
avoiding or
mitigating an
environmental
effect?

IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
Impact LU-1: Physically divide an established community? Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

No changes in the location, size, or boundaries of the GRRSP Planning Area boundary have occurred since adoption of the GRRSP in 2001. As discussed in the Project Description, the Modified Project would modify the size and boundaries of the GRRSP, however minimally in the northern portion of the Project site. In addition, the eastern portion of the Project site has been slightly expanded to incorporate appropriate grading limits within the hilly terrain.

Since approval of the 2001 EIR, the horse boarding operation has ceased existence and the only active land use within the Modified Project boundary are the two homes located in the east and central portions of the Planning Area. Implementation of the proposed Modified Project would necessitate the removal of these facilities homes and other faculties. However, the on-site land uses do not represent an identified community. In addition, the GRRSP

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Planning Area is located at the western edge of the City and is not surrounded by a community.

Development of the Modified Project would not physically divide an established community resulting in a less than significant impact requiring no mitigation. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

Impact LU-2: Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

As discussed previously, land use regulation of the Modified Project site are governed by the existing GRRSP. The main change to the existing GRRSP proposed as part of the GRRSPA involves replacing the current Mixed-Use (MU) land use in PAs 1, 2, and 3 with a more focused or specific Business Park Industrial (BPI) land use type and the permanent designation of approximately 80.77 acres in the southern half of the GRRSP Planning area for dedication to the Riverside Conservation Agency for the purposes of providing consistency with the Western Riverside Multiple Species Habitat Conservation Plan (WR-MSHCP). In contrast to the wide range of land uses allowed in the MU designation including retail, service and support commercial, light industrial, hotel/motel, or office uses the proposed BPI land use would lock down the land use types allowed by focusing on accommodating single- and multitenant light industrial, warehouse, and incubator uses with supporting offices. The balance of the GRRSP planned land uses would remain essentially the same as originally approved with GC allowed in the approximately 5-acre area PA north of Green River Road and south of the railroad tracks, ER south of and above the proposed BPI Development but on a reduced amount of property, and Open Space further south.

Consistency discussions with applicable Connect SoCal goals are provided below in Table

4.11-2 as follows:

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Table 4.11-2: GRRSPA (Modified Project) Consistency with Connect SoCal Goals Goal Analysis
Goal #1: Encourage regional economic
prosperity and global competitiveness.

Consistent: The GRRSP Planning Area abuts the City’s western limits and represents a cohesive extension of the City’s growth and development. The GRRSP planned land uses include a mix of general commercial, estate residential, and business park industrial uses. The non-residential businesses that locate in Green River Ranch will generate employment opportunities and property tax and sales revenue to the City of Corona. Positioned as the western gateway into the City, the project allows for freeway-oriented business and commercial uses to also capture passer-by spending.

Goal #2: Improve mobility,
accessibility, reliability and travel
safety for people and goods.

Consistent: See response to Goal #1. In addition, because the GRRSP is located in the SR-91 corridor area development of the planned commercial and industrial business park non-residential uses in this area will reduce trip distances by providing a short trip length to and from the site and SR-91.

Goal #3: Enhance the preservation,
security, and resilience of the regional
transportation system.

Consistent: As part of the development of Green River Ranch, improvements will be made to the Green River Road right-of-way.

This roadway is an important part of the regional roadway network, connecting with SR-91.

Goal #4: Increase person and goods
movement and travel choices within
the transportation system.

Consistent: See response to Goal #3.

Goal #5: Reduce greenhouse gas
emissions and improve air quality.

Consistent: As concluded in Section 4.3 of this SEIR, the GRRSP will not obstruct the City’s ability to reduce GHG emissions from City operations. Project-specific GHG emissions attributable to the GRRSP as amended were determined to be less than significant with incorporation of GHG reduction features required for consistency with the City’s CAP.

Goal #6: Support healthy and equitable
communities.

Consistent: The GRRSP would provide a long-range plan for the property that places new non-residential development along the SR-91 corridor and places ER lots in the southern portion of the property at higher elevations. The residential lots would be custom designed and placed considering the topography and environmental sensitivities of the estate residential area. The non-residential development would adhere to the California Green Building Standards Code as applicable at the time of building permit issuance, which requires a variety of energy conservation features to meet broad environmental objectives.

Goal #7: Adapt to a changing climate
and support an integrated regional
development pattern and
transportation network.

Consistent: See responses to Goal #1 and #3.

Goal #8: Leverage new transportation
technologies and data-driven solutions
that result in more efficient travel.

Not applicable: The ability for a specific project to affect the efficiency of the transportation system through use of new technologies is limited.

This goal is more appropriately addressed by local government agencies and transit districts.

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Table 4.11-2: GRRSPA (Modified Project) Consistency with Connect SoCal Goals Goal Analysis
Goal #9: Encourage development of
diverse housing types in areas that are
supported by multiple transportation
options.

Consistent: See response to Goals #1, #2, #3 and #4.

Goal #10: Promote conservation of
natural and agricultural lands and
restoration of habitats.

Consistent: As detailed in Section 4.2 of this SEIR, the proposed Project would not affect agricultural lands. The proposed Project would result in the dedication of 83.34 acres of property in the southern half of the GRRSP Planning Area to the RCA for inclusion in the habitat reserve assembly in accordance with the WR-MSHCP.

As discussed in Table 4.11-2, the proposed Project is consistent with applicable Connect SoCal goals.

Consistency discussions with applicable City General Plan goals are provided below in Table

4.11-3 as follows:

Table 4.11-3: GRRSPA (Modified Project) Conformance with City General Plan Goals Goal Project Conformance
Land Use
LU-1: A community that contains a
diversity of land uses that support the
needs of and provide a high quality of
life for its residents, sustain, and
enhance the City’s economy and fiscal
balance, are supported by adequate
community infrastructure and
services, and are compatible with the
environmental setting and resources.

Conforms: The GRRSP Planning Area abuts the City’s western limits and represents a cohesive extension of the City’s growth. The GRRSP would provide the structure for a mix of general commercial, estate residential, business park industrial uses, and Open .Space. The nonresidential uses will occur near SR-91 and generate employment opportunities and property tax and sales revenue to the City of Corona. Positioned as the western gateway into the City, the project allows for freeway-oriented business and commercial uses to capture passer-by spending. The residential estate lots will occur in the higher elevations, allowing for the retention of topographic character and environmental resources.

LU-2: A cohesive and integrated city
of distinct and vital commercial and
business districts and livable
residential neighborhoods, correlated
with supporting transportation and
utility infrastructure that sustain
natural open spaces hillsides, and
canyons.

The Green River Ranch Specific Plan coincides with the City’s goal of creating a cohesive and integrated city. The Specific Plan proposes a mixture of commercial, business park industrial, estate residential, and open space uses in proximity to existing infrastructure. The residential estate lots will occur in the higher elevations, allowing for the retention of existing topographic including hillsides and canyons. The flatter areas of the site near SR-91 are planned for the commercial and business park industrial uses.

LU-3: A development pattern that
retains and complements the City’s
The Green River Ranch Specific Plan complements the City’s goal to retain and complement the City’s surrounding land uses and

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Table 4.11-3: GRRSPA (Modified Project) Conformance with City General Plan Goals Goal Project Conformance
important residential neighborhoods,
commercial and industrial districts,
and open spaces.
character, including nonresidential uses along the SR-91 corridor and residential neighborhoods to the southeast in higher elevations, as well as open space to the south and to the west in unincorporated Riverside County.

LU-4: Strategic growth that preserves
viable residential neighborhoods and
commercial and industrial districts,
targets new development to parcels
that are environmentally suitable and
can be supported by infrastructure and
services, and re-uses appropriate
properties to enhance their economic
vitality and community livability.

The Specific Plan area abuts the City’s western limits and represents a cohesive extension of the City’s growth. The new non-residential development is targeted to the flattest portions of the site along the SR91 corridor, with estate residential lots targeted to the higher elevations.

The uses are environmentally suitable to their planned locations and will enhance the city’s economic vitality and community livability.

LU-5: Distinct and well-maintained
neighborhoods and districts that
contribute to the identity, character,
and image of Corona as a livable,
diverse, innovative, and
environmentally sustainable
community.

The Green River Ranch Specific Plan provides a long-range plan for the property that places new nonresidential development along the SR91 corridor and places estate residential lots in the southern portion of the property at higher elevations. The residential lots would be custom designed and placed considering the topography and environmental sensitivities of the estate residential area. The non-residential development would adhere to the California Green Building Standards Code as applicable at the time of building permit issuance, which requires a variety of energy conservation features to meet broad environmental objectives. Refer to the Subsequent Environmental Impact Report prepared for the Green River Ranch Specific Plan for more information about environmental objectives and sustainability.

LU-6: A community that promotes
sustainability in the planning, design,
and construction of developments to
create a more livable community and
achieve broader economic and
environmental objectives.

LU-7: Residential neighborhoods that
contain a diversity of housing and
supporting uses to meet the needs of
Corona’s residents and that are
designed to enhance livability and a
high quality of life.

The Green River Ranch Specific Plan includes a planned residential neighborhood 32 single-family estate lots on a minimum lot size of 25,000 square feet. The large lots will add to the City’s range of available housing types and quality of life.

LU-8: Assure the integrity, quality, and
livability of Corona’s existing
residential neighborhoods, preserving
those elements that give them
character, cohesion, and quality of life.

There are no existing neighborhoods within the Specific Plan area.

Although, the Specific Plan was designed with special consideration given to the Sierra del Oro residential community in the vicinity.

Commercial and industrial development is limited to the lower elevations of the site, adjacent to existing retail facilities along the SR91 Freeway. Special design guidelines are proposed to screen rooftop equipment and accessory uses from higher elevation views, and to break up large parking lot expanses with canopy trees so that the development areas have a natural appearance when viewed from the higher elevation residences in the vicinity.

LU-9: Development of new residential
neighborhoods that complement
existing neighborhoods, contain a mix
of neighborhood-supportive land uses,
The Specific Plan proposes to fill the demand for high-end custom home sites within the western portion of the City which, according to market analysis, is not being met within Corona. The project proposes a total of 32 single-family residential dwellings on 20.39 acres. All lots

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Table 4.11-3: GRRSPA (Modified Project) Conformance with City General Plan Goals Goal Project Conformance
exhibit high quality architectural
design, and ensure a high level of
livability for their residents.
are intended for use as custom home sites. The Green River Ranch Specific Plan includes architectural and landscape design guidelines and standards for residential development. These guidelines and standards, together with the entitlement process described in Chapter 5 of the Specific Plan, are intended to ensure that residential development results in construction of aesthetically pleasing neighborhoods with high quality homes.

LU-10: Development of low-density
residential neighborhoods in areas on
the city’s southern periphery that
preserve the rural and open space
character of their setting.

The Green River Ranch Specific Plan is not located on the city’s southern periphery. Although, the Green River Ranch Specific Plan has been designed to significantly limit non-residential development to the lower foothills of the property, leaving the steeper hillsides for only 32 low density rural residential lots and semi-rural scale of development, and thereby retaining a substantial portion of the hillsides in its natural state.

LU-11: A diversity of viable
commercial and professional office
districts and corridors that contain uses
supporting resident, business, and
visitor needs and that contribute
revenue to the City to fund essential
services and maintain a high quality of
life.

The Green River Ranch Specific Plan’s general commercial and business park industrial uses assist in promoting the City’s employment base. Additionally, because the Specific Plan area acts as the western gateway into the City, the project allows for freewayoriented business and commercial uses geared toward travelers arriving into the City.

LU-12: Development and maintenance
of industrial land uses that provide a
wide range of employment
opportunities for Corona’s residents
and that provide sufficient goods,
services, and revenues to sustain the
City’s economy.

The Green River Ranch Specific Plan’s business park industrial land use allows for a range of light industrial and business park uses. These uses provide employment opportunities for Corona’s residents, and assist in providing sufficient goods, services, and revenue to sustain the City’s economy.

LU-13: Vital and active mixed-use
districts that provide a mix of housing
in proximity to commercial uses,
services, entertainment, and public
transit that provide a mix of office,
commercial, and/or industrial uses that
support the local economy.

The Green River Ranch Specific Plan provides the structure for a mix of general commercial, estate residential, business park industrial uses, and open space. The non-residential uses will house a variety of businesses, enhance the local economy, and occur near SR-91 and adjacent to existing infrastructure and commercial uses to the east.

Nearby residential uses both off-site and in the estate residential portion of the Specific Plan add to the diversification of uses in the general area in furtherance of the City’s goal to provide an integrated mix of uses.

LU-14: Economically vital districts
that are characterized by and benefit
from their integrated mix of industries,
retail, and office uses.

LU-16: Open spaces that provide
Corona’s residents with opportunities
to enjoy the natural environment,
provide visual “relief” from urban
development, protect significant plant
and animal habitats, and protect
The southern portion of the project area consists of steep hillsides, incised canyons, and mountainous areas with limited development potential. As such, the Green River Specific Plan designates this area for 83.55 acres of open space. This land use designation will not allow for development in order to retain open space and conservation of the land in its’ natural state.

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development from natural
environmental hazards.

Housing
H-1: Promote and maintain a balance
of housing types and corresponding
affordability levels to provide for the
community's demands for housing
within all economic segments of the
City.

The Green River Ranch Specific Plan proposes to fill the demand for high-end custom home sites with 3-acre average lot sizes within the western portion of the City. According to market analysis, the demand for custom home sites is range of housing opportunities available in the City and provide alternatives to conventional production housing in a location convenient to community services.

H-3: Maintain high quality residential
development standards to ensure the
establishment of livable
neighborhoods with lasting safety and
aesthetic value, and to promote the
maintenance and preservation of
historic neighborhoods.

The Green River Ranch Specific Plan proposes to help fill the demand for high-end custom house sites within the City which, according to market analysis, is not currently being met within Corona. The Green River Ranch Specific Plan includes architectural and landscape design guidelines and standards for residential development. These guidelines and standards, together with the entitlement process described in Chapter 5 of the Specific Plan, are intended to ensure that residential development results in construction of aesthetically pleasing neighborhoods with high quality homes.

H-4: Ensure that housing opportunities
are available to all persons without
regard to race, color, ancestry or
national origin, religion, marital status,
familial status, age, gender, disability,
source of income, sexual orientation,
or any other arbitrary factors.

The Green River Ranch Specific Plan accommodates 32 single-family residential dwellings on a minimum lot size of 25,000 square feet per dwelling. The intent is to widen the range of housing opportunities available in the City and provide alternatives to conventional production housing in a location convenient to community services.

Community Design
CD-1: Public street landscapes that
unify the City of Corona and contribute
to the unique identity of its
neighborhoods, districts, and public
places.

Green River Road functions as a major roadway corridor and entry to the City of Corona. Along the Green River Ranch frontage, a City gateway entry feature and project entries with special landscape elements will be established to create a strong identity and arrival sequence to the City and Specific Plan area. The gateway elements, streetscape plantings, and additional landscape buffer adjoining Green River Road will reinforce the importance of this roadway to the project area, and to the City as a whole.

CD-2: Entries that are well defined by
signage, landscaping, lighting, and
other visual landmarks that provide a
clear sense of arrival into and identity
for the City of Corona.

Careful consideration has been given to the location and treatment of project entries. Entries are intended to establish a high-quality image for the City. From a City gateway feature, to landscaped streets, to primary project entry, to secondary project entries. The design intent is to create a visual gateway as visitors arrive into the City, and to create distinctive points of arrival at the primary and secondary entry points to the Specific Plan area. The entries will serve to reinforce the distinctive character of the community at key intersections.

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CD-3: Well designed, high quality, and
distinctive public and private signage
that identifies key City districts, public
facilities, buildings, and facilitates
wayfinding.

Signs within the Specific Plan area are intended to help create an identity and desirable destination for the project as a whole, to provide clear and simple directions for ingress and egress, and to add an element of consistency to the project. Refer to Section 3 of the Green River Ranch Specific Plan for further details on signage and wayfinding standards.

CD-6: Develop and implement land
use controls that preserve significant
visual resources from potential loss or
disruption.

A Visual Resources Analysis was completed for the Green River Ranch Specific Plan to show that the project would protect the scenic character and quality of the property, in part through compliance with the Specific Plan’s design guidelines and development standards.

CD-7: Maintain, establish, develop,
and protect the City’s highways and
corridors for scenic purposes.

Paleontological Resources
HR-3: Recognize the importance of
archeological and paleontological
resources and ensure the identification
and protection of those resources
within the City of Corona.

A Cultural Resources Assessment report was prepared for the Green River Ranch Specific Plan property, which indicated that there are no known significant archaeological resources present. The Subsequent Environmental Impact Report addresses the topics of archaeology and paleontology and presents measures to ensure that any resources discovered during the Project’s construction, however unlikely, will be appropriately identified and treated.

HR-4: Recognize, identify, and protect
natural resources for their historic and
cultural value, and include these
features in the historic resource
management program.

These goals do not apply. A Cultural Resources Assessment report was prepared for the Green River Ranch Specific Plan property, which indicated that there are no historically significant resources present.

The Specific Plan does not offer opportunity to increase community awareness about heritage, cultural, or historic resources, nor to strengthen historic preservation partnerships. HR-5: Foster increased community awareness and appreciation for
Corona’s unique heritage and the many
cultural and historical resources found
in the City.

HR-6: Build and strengthen
preservation partnerships between the
City and property owners, businesses,
community organizations, educational
institutions, and State and federal
agencies.

Economic Development

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ED-1: Promote a strong and diversified
economic base by attracting quality
businesses and encouraging existing
businesses to expand their sales,
facilities, and employment.

The Green River Ranch Specific Plan provides for general commercial and business park industrial uses in the SR-91 corridor. The businesses that locate in Green River Ranch will generate employment opportunities and property tax and sales revenue to the City of Corona.

Positioned as the western gateway into the City, the project allows for freeway-oriented business and commercial uses to also capture passerby spending.

ED-2: Promote a growing and skilled
labor force.

The Green River Ranch Specific Plan provides employment opportunities to support the commercial and business park industrial uses. A range of business types are permitted in these land use categories, many of which require a skilled labor force.

ED-4: Ensure fiscal viability for the
City by pursuing a diversified local
business base that provides growing
sales and property tax revenues to pay
for municipal operations.

The Green River Ranch Specific Plan provides for general commercial and business park industrial uses. The non-residential uses will occur near SR-91 and generate employment opportunities and property tax and sales revenue to the City of Corona. Positioned as the western gateway into the City, the project also allows for freeway-oriented business and commercial uses to capture passer-by spending.

ED-5: Pursue a range of financing
opportunities to fund infrastructure and
public facilities.

As part of the development of Green River Ranch, public infrastructure will be installed, including roadway improvements to Green River Road and Dominguez Ranch Road. Additionally, the development will be required to pay impact feestowards public infrastructure and facility improvements in the City.

ED-6: Continue investing in the City’s
economic development.

The Green River Ranch Specific Plan area abuts the City’s western limits and represents a cohesive extension of the City’s growth and development. The Specific Plan provides the structure for a mix of general commercial, estate residential, and business park industrial uses. The non-residential uses will occur near SR-91 and positively contribute to the City’s economic strength and growth. Development in Green River Ranch also will increase recurring sales tax and property tax, and generate recurring earned income for the employees who will work at the businesses located in the Specific Plan area, triggering direct and indirect secondary economic growth.

Circulation
CE-1: A roadway network of complete
streets that provide accessibility for all
users of all ages and abilities while
maintaining context sensitivity to the
land uses identified in the Land Use
Element.

As part of the development of Green River Ranch, public roadways will be improved, including roadway improvements to Green River Road and Dominguez Ranch Road. Sidewalks and bicycle lanes are provided along Green River Road according to City standards for the roadway classification. A sidewalk system also will be provided along private Street “A” internal to the Specific Plan area.

CE-2: A network of regional roadway
facilities to ensure the safe and
efficient movement of people and
goods from within the City to areas
outside its boundaries and that reduce
regional cut-through traffic in the City.

As part of the development of Green River Ranch, improvements will be made to the Green River Road right-of-way. This roadway is an important part of the regional roadway network, connecting with SR91.

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CE-3: Maximize the efficiency of the
circulation system through the use of
transportation system management
strategies. Reduce total vehicular miles
traveled in Corona through the
development and improvement of
alternative transportation modes, the
reduction in the number of trips
generated, and the reduction in trip
distances.

The Green River Ranch Specific Plan is located in the SR-91 corridor area. The development of commercial and industrial business park nonresidential uses in this area will reduce trip distances by providing a short trip length to and from the site and the State Highway System.

CE-4: A public transportation system
that provides mobility for residents and
encourages use of public transportation
as an alternative to automobile travel.

The Green River Ranch Specific Plan is located in the SR-91 corridor area. The development of commercial and industrial business park nonresidential uses in this area will encourage carpooling and public transportation use in and around the freeway corridor. No public transportation improvements are targeted for inside the Specific Plan boundary. All roads interior to Green River Ranch will be private roads.

CE-5: Develop and maintain
convenient bikeway and pedestrian
systems to satisfy both recreational
desires and transportation needs using
a complete streets approach to
accommodate users of all modes,
abilities, and needs.

As part of the development of Green River Ranch, public roadways will be improved, including roadway improvements to Green River Road, and Dominguez Ranch Road. Sidewalks and bicycle lanes are provided along Green River Road according to City standards for the roadway classification. A sidewalk system also will be provided along private Street “A” internal to the Specific Plan area.

CE-6: Facilitate goods movement to
support local commerce, while
protecting residents and visitors from
the negative effects of noise, vibration,
and air pollution typically associated
with truck operations and rail service.

The business park industrial uses in Green River Ranch are anticipated to directly support goods movement and local commerce. The development standards and design guidelines included in the Specific Plan are aimed at context-sensitive development. In addition, a variety of technical studies prepared as part of the Green River Ranch Subsequent Environmental Impact Report will address and mitigate for any significant negative effects associated with business operations, including truck operations that service the buildings.

CE-7: Provide an adequate supply of
convenient parking for all
developments in the City in a manner
that is consistent with the goals of
managing transportation demand.

Parking in the Specific Plan area is required to meet the requirements of Corona Municipal Code Section 17.76. See Specific Plan Table 3, Development Standards.

Infrastructure and Utilities
IU-1: Secure water supply, water
treatment, distribution, pumping, and
storage systems that meet the current
and projected future daily and peak
water demands of Corona in an
equitable, efficient, and sustainable
manner.

The Water Supply Assessment prepared for the Green River Ranch Specific Plan demonstrates that an adequate supply of water is available for the project in addition to the City’s other water supply commitments.

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IU-2: Minimize water consumption
and urban runoff generation through
site design, the use of water
conservation systems, and other
techniques.

The landscape plant palette presented in Specific Plan Section 4.3.6 focus on the use of low and medium water use plant material. Also, development will be required to comply with the California Green Building Standards Code, which requires the use of water conserving features in building design.

IU-3: A secure sewer collection and
treatment system that meets current
and projected future daily and peak
load demands in Corona and protects
public health and the environment in
an efficient, equitable, and sustainable
manner.

A Sewer Study was prepared for the Green River Ranch Specific Plan that demonstrates a secure sewer collection and treatment system that meets current and projected future daily and peak load demands in Corona and protects public health and the environment.

IU-4: Adequate planning,
construction, maintenance, and
funding for storm drainage and storage
control facilities to support permitted
land uses and protect the health and
safety of the public and environment.

The Water Supply Assessment and Hydrology Report prepared for the Green River Ranch Specific Plan demonstrates through onsite drainage facilities, catch basins, and best management practices the Green River Ranch Specific Plan area will be compliant with Goals IU-4 and IU-5.

IU-5: Ensure that urban runoff from
existing and new development does not
degrade the quality of the City’s
surface waters, groundwater system,
and other sensitive environmental
areas.

IU-6: Maintain solid waste collection,
recycling, and disposal services,
programs, and regulations in
accordance with California mandates.

Development in the Green River Ranch Specific Plan is required to comply with all City and State mandated waste collection and recycling requirements.

IU-7: Reliable and safe natural gas,
electrical, and renewable energy
supplies and facilities to support
existing and future uses within Corona.

The Specific Plan area will be served with adequate infrastructure, and is located adjacent to Green River Road where infrastructure systems are in place. For further analysis, energy consumption is evaluated as part of the project’s Subsequent Environmental Impact Report.

IU-8: Allow for the provision of an
adequate, safe, and orderly supply of
telecommunication infrastructure to
support existing and future land uses
within the City.

The Green River Ranch Specific Plan will be supplied with adequate infrastructure and will not obstruct the provision of adequate, safe, and orderly telecommunication infrastructure.

Public Safety
PS-1: Adequate protection of the
health, safety, and welfare of the
public, property and economic
investments, and community social
and service functions from seismic and
geologic events.

Seismic ground shaking could affect the Green River Ranch site in a similar manner as all properties in the area. Design of all structures is required to comply with the California Building Standards code and City of Corona ordinances which will mitigate seismic hazards to an acceptable level. Structures will be designed to withstand earthshaking from the maximum credible earthquake that can be expected, as well

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as impacts from secondary seismic hazards in accordance with recommendations in the Subsequent Environmental Impact Report.

PS-2: Adequate protection of the
health, safety, and welfare of the
public, property and economic losses,
and community social and service
functions from flooding and dam
inundation events.

The Green River Ranch project will not compromise public health, safety, or welfare due to flooding. No dams are located or are proposed within the project site. Also, a storm water infrastructure system will be installed as called for by the Specific Plan to handle water collection and discharge into the City’s storm water drainage system.

PS-3: Ensure that the health, safety,
and general welfare of residents and
visitors of the City of Corona,
including the overall health of the
natural environment, is provided
through good land use planning and
strict adherence and enforcement of the
City of Corona Hazardous Material
Area Plan, Local Hazard Mitigation
Plan, California Fire Code, Certified
Unified Program Agency, and other
pertinent sources and documents.

The Green River Ranch Specific Plan ensures the health, safety, and general welfare of residents and visitors is valued by using good land use planning and strict adherence and enforcement of all health and safety requirements. Additionally, the Specific Plan includes guidelines for wildfire protection in Specific Plan Section 4.3.5. Refer to the Subsequent Environmental Impact Report for more information.

PS-5: Ensure that there is an adequate
service level of law enforcement
services provided for all residents,
visitors, and businesses throughout the
City of Corona.

The Green River Ranch Specific Plan will not interfere with the City’s ability to provide an adequate level of law enforcement services.

Impact fees and recurring tax revenue generated by development in Green River Ranch will support law enforcement services.

PS-6: Ensure that police services are
provided in a manner that reflects and
is sensitive to the characteristics and
needs of resident population, visitors,
and business community.

PS-7: Encourage the use of land use
and development configuration and
site design standards within residential
and other developments to minimize
crime and improve the safety for
residents, visitors, and employees.

The Green River Ranch Specific Plan’s non-residential development is positioned along Green River Road, which is a safe and convenient location for such uses. The 32 estate residential lots will be accessed by private roads, which the Specific Plan states may be gated for security.

PS-8: Ensure that there is an adequate
service level of fire protection and
suppression services provided for all
residents, visitors, and businesses
throughout the City of Corona to meet
community expectations and
budgetary resources for safety.

The Green River Ranch Specific Plan area will be served by the City’s Fire Department and development within its boundaries is required to comply with the Department’s Uniform Fire Code. Fire services will be provided by the Fire Station #5 located at 1200 West Canyon Crest Drive, just less than one mile east of the project along Green River Road. Emergency response time to all parts of the Specific Plan area will be five minutes or less (i.e., two miles or less), which meets or exceeds the City’s criteria for residential, industrial, and commercial development response times. The site is located in a high fire hazard PS-9: Through fire prevention and
educational efforts, promote

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participation, voluntary compliance
and community awareness of fire
safety issues in order to reduce the
incidence and severity of fire and
related emergencies and loss.
area, which requires conformance with the City of Corona Fire Department’s Fuel Modification Program. The Specific Plan incorporates landscaping standards and guidelines in compliance with that program for areas that are susceptible to wild land fire hazards.

The Specific Plan proposes a minimum 150’ fuel modification zone at the edge of the graded slope areas where they interface with the wild land hillside, as shown on Exhibit 14, Conceptual Landscape Plan. A more detailed Fuel Modification Plan will be submitted to the City for review and approval as part of Precise Plan approvals. Further, potential fire impacts and appropriate mitigation measures will be evaluated as part of the Environmental Impact Report prepared for the project.

PS-10: Reduce fire risk to life and
property through effective land use
planning and compliance with federal,
state, local laws, ordinances, and
standards.

Noise
N-1: Protect residents, visitors, and
noise-sensitive land uses from the
adverse human health and
environmental impacts created by
excessive noise levels from
transportation sources by requiring
proactive mitigation.

Potential noise impacts and appropriate mitigation measures will be evaluated as part of the Subsequent Environmental Impact Report prepared for the project.

N-2: Prevent and mitigate the adverse
impacts of excessive ambient noise
exposure, including vibration on
residents, employees, visitors, and
“noise sensitive” land uses.

N-3: Discourage the spillover or
encroachment of unacceptable noise
levels from mixed use, commercial,
and industrial land uses on to noise
sensitive land uses.

N-4: Minimize noise impacts created
by railroad transit and airport
operations and flight patterns on
residential areas and other “noise
sensitive” land use areas.

Healthy Community
HC-2: Protection of residents,
business, and visitors from exposure to
pollution and improvement of air
quality for the community.

Potential air quality impacts and appropriate mitigation measures will be evaluated as part of the Subsequent Environmental Impact Report prepared for the project.

HC-4: Ample opportunities for
housing that is safe, sanitary, and
healthful for residents of all ages,
abilities, and incomes.

The Green River Ranch Specific Plan proposes to fill the demand for high-end custom home sites with 25,000 sq. ft. minimum lot sizes within the western portion of the City. According to market analysis, the demand for custom home sites is not being met within Corona. The

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intent is to widen the range of housing opportunities available in the City and provide alternatives to conventional production housing in a location convenient to community services.

Environmental Resources
ER-1: Enhancement, protection, and
management of the quality and
quantity of hydrologic resources in
Corona to ensure its long-term quality
and sustainability.

A Hydrology Report and Water Quality Management Plan (WQMP) that supplements the Green River Ranch Specific Plan have been prepared. A storm water infrastructure system will be installed as called for by the Specific Plan to handle storm water collection and discharge into the City’s storm water drainage system. A large portion of the estate residential area would remain undeveloped, allowing water to continue percolating into the natural drainage system. There is no development proposed in Planning Area 7.

ER-2: Sustainable use of finite water
resources for the long-term use of
residents, the business community, and
visitors of Corona.

The Water Supply Assessment prepared for the Green River Ranch Specific Plan demonstrates that an adequate supply of water is available for the project in addition to the City’s other water supply commitments.

ER-3: Long-term groundwater
sustainability of the local water supply
for domestic, commercial, industrial,
agricultural, environmental protection,
and other purposes.

There is a large portion of the Green River Ranch Specific Plan project site will be maintained as permeable surfaces to allow for groundwater infiltration. For further analysis, refer to the prepared Green River Ranch Hydrology Report and Subsequent Environmental Impact Report.

ER-4: Proper management of
floodplain and riparian areas for their
importance to wildlife habitat, unique
and sensitive plant life, water recharge,
and public health and safety.

A portion of the estate residential area would remain undeveloped, allowing water to percolate into the natural drainage system and groundwater table and for riparian areas to continue serving as habitat for wildlife.

ER-5: Preservation and protection of
natural and manmade wetlands from
development impacts for their
importance to wildlife habitat, unique
and sensitive plant life, water recharge,
and scenic value.

The Green River Ranch Specific Plan advocates for sensitive placement of residential developmental building pads for the protection and preservation of natural and man-made wetlands from development impacts for their importance of wildlife habitat, unique and sensitive plant life, water recharge and scenic value. For additional analysis on biological preservation and protection, refer to the Biological Resources section of the Subsequent Environmental Impact Report prepared for the Green River Ranch Specific Plan.

ER-6: Protection, enhancement, and
sustaining of significant plant and
wildlife species and habitat that exist in
Corona and its Planning Area, for the
long-term benefit of the natural
environment and Corona residents and
visitors.

The Green River Ranch Specific Plan provides for a mix of general commercial, estate residential, and business park industrial uses. The non-residential uses will occur near SR-91 in the most non-sensitive portions of the property for biological resources. The Green River Ranch Specific Plan advocates for sensitive placement of residential developmental building pads in the southern portion of the property for the protection and preservation of sensitive biological resources. For additional analysis on biological resources, refer to the Biological Resources section of the Subsequent Environmental Impact Report prepared for the Green River Ranch Specific Plan.

ER-7: Adequate protection of
biological resources and increased
public awareness of their value to the
community.

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ER-8: Protection of forest and
vegetation resources in the City of
Corona.

ER-9: Protection of regional washes
and waterways and their use for
recreational and open space purposes
such as trails, habitat preservation, and
groundwater recharge.

ER-12: Improvement in air quality
within the Corona Planning Area by
controlling point sources, reducing
vehicle trips, implementing efficient
land use planning and construction
practices, and energy conservation.

The Green River Ranch Specific Plan is located in the SR-91 corridor area. The development of commercial and industrial business park nonresidential uses in this area will reduce trip distances, and associated vehicular air emissions, by providing a short trip length to and from the site and the State Highway System. Development in the Specific Plan area will be required to comply with the California Green Building Standards Code, which requires energy conservation in construction practices.

ER-13: Reduce greenhouse gas (GHG)
emissions from City operations and
community-wide sources 15% below
2008 levels by 2020, 49% below 2008
levels by 2030, and 66% below 2008
levels by 2040.

The Green River Ranch Specific Plan will not obstruct the City’s ability to reduce GHG operations from City operations. Refer to the Greenhouse Gas Emissions Report prepared for the Green River Ranch Specific Plan Subsequent Environmental Impact Analysis for an analysis of project-specific GHG emissions and an explanation of consistency with GHG reduction goals.

As presented in the discussions contained in Table 4.11-2, the Modified Project would be consistent with applicable Connect SoCal goals regarding sustainable communities, efficient transportation systems, and GHG reduction measures. As presented in the discussions contained in and 4.11-3, the Modified Project would conform with applicable City General Plan Goals regarding: Type, Distribution and Form of Land Uses; Growth and Development; Community Quality and Sense of Place; General Residential; Existing Residential Neighborhoods; New Residential Neighborhoods; Commercial and Office Districts; Industrial Districts; Mixed Use Districts; Housing Production; Neighborhood Quality; Fair Housing; Community Design Context; City Entries and Monumentation; Community Signage and Wayfinding; Visual Resources; Paleontological Resources; Economic Base; Labor Force; Fiscal Viability; Financing Opportunities; Economic Development Program; Local Thoroughfares and Routes; Intercity and Regional Transportation; Transportation Management; Public Transportation; Bicycle and Pedestrian Facilities; Goods Movement; Parking; Water System; Sewer/Reclaimed Water; Storm Drainage; Solid Waste Management; Energy; Telecommunications; Seismic and Geologic Hazards; Flooding and Inundation; Hazardous Materials; Police Services; Fire Hazards; Transportation Noise; Reduction in Pollution Exposure; Safe and Sanitary Housing; Water Resources; Biological Resources; and

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4.11-22
Air Resources. The Modified Project’s consistency with applicable goals in SCAG’s Connect SoCal and conformance with applicable goals in the City General Plan results in a less than significant impact regarding a conflict with a land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect and no mitigation is required.

Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

4.11.8 CUMULATIVE IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Less Than Significant Impact/No Changes or No New Information Requiring Preparation of an EIR.

As discussed under Impact LU-1, the Modified Project would not physically divide an established community. Similarly, the Modified Project was found to be consistent with applicable Connect SoCal and General Plan land use plans, policies, and regulations adopted for the purpose of avoiding or mitigating an environmental effect. Lastly, as detailed in Section

4.3 of this SEIR, the Modified Project was found to be consistent with the WR-MSHCP. The Modified Project’s impacts associated with these three topics were determined to be less than significant. All three of these topics are inherently cumulative in nature, and therefore the Modified Project’s cumulative impacts are less than significant. The Modified Project’s impacts associated with land use and planning are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged.

4.11.9 MITIGATION MEASURES IDENTIFIED IN PRIOR EIR APPLICABLE TO

MODIFIED PROJECT
No mitigation measures were included in the 2001 EIR.

4.11.10 NEW MITIGATION MEASURES APPLICABLE TO MODIFIED PROJECT No mitigation measures are required.

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4.12 MINERAL RESOURCES

4.12.1 INTRODUCTION
This section provides a summary of applicable impacts and mitigation measures from the 2001 EIR, an overview of existing mineral resources within the GRRSP Planning Area and surrounding region, a summary of applicable regulations, and analyses of potential changes in impacts to mineral resources from implementation of the Modified Project in comparison to the Approved Project. No Scoping Meeting comments or NOP comment letters were received pertaining to this topic.

4.12.2 SUMMARY OF IMPACTS AND MITIGATION MEASURES FROM THE 2001 EIR
The 2001 EIR determined the Approved Project would result in no impact related to mineral resources as follows.
a) Result in the loss of availability of a known mineral resource that would be a value to the region and the residents of the state?
b) Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan? The General Plan at that time did not designate the GRRSP Planning Area as a location where mineral resources should be preserved. At the time the 2001 EIR prepared, a vast majority of the GRRSP Planning Area was located in unincorporated Riverside County, outside of the City’s limits but within the Sphere of Influence (SOI). The General Plan at that time designated the portion of the GRRSP Planning Area within the SOI as Light Industry and Agriculture/Rural Residential, thereby indicating the City’s commitment to allow future development of the Planning area. Consequently, the 2001 EIR concluded development of the GRRSP would not result in a significant impact to mineral resources and no mitigation was required.

4.12.3 ENVIRONMENTAL SETTING
The GRRSP Planning Area geology includes sedimentary rock overlayed with alluvium deposits. The deposits include older alluvium related to ancient channels of the Santa Ana River and younger alluvium from the Santa Ana River and tributary drainages from the Santa Ana Mountains. Construction related mineral deposits consisting of clays, sand, gravel and rock are found in the Santa Ana Mountains, plus trace amounts of silver, lead, zinc, coal, and gypsum.

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4.12.4 PROJECT DESIGN FEATURES (PDF)
No Project Design Features are proposed for the Modified Project.

4.12.5 EXISTING REGULATIONS, PLANS, PROGRAMS, AND POLICIES

FEDERAL REGULATIONS
There are no federal regulations related to mineral resources that apply to the Modified Project.

STATE REGULATIONS
There are no State regulations related to mineral resources that apply to the Modified Project.

REGIONAL REGULATIONS
There are no regional regulations related to mineral resources that apply to the Modified Project.

LOCAL REGULATIONS
City of Corona Municipal Code
The Corona Municipal Code, Title 19, Surface Mining and Regulations, is intended to regulate surface mining operations and reclamation plans in accordance with SMARA. The ordinance was intended to ensure that: (1) subsequent beneficial uses of mined and reclaimed land are promoted and the land is returned to a usable condition; (2) groundwater supply, recreation, watershed, wildlife, range and forage, and aesthetic enjoyment are given appropriate consideration in the planning process; and 3) the production and conservation of mineral resources are encouraged. The ordinance addresses: surface mining permits and reclamation plans, minimum site performance standards, annual inspections and financial security, and enforcement. The municipal code requires a Mineral Resource Overlay on all lands identified for mineral resource protection in Corona and its sphere of influence. As required by state law, the City adopted required local regulations pursuant Ordinance No. 2386, which was certified by the State Mining and Geology Board in 1999.

4.12.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City of Corona, significant agricultural and forest resources impacts would occur if the proposed Project or any Project-related component would:

Threshold MIN-1 Result in the loss of availability of a known mineral resource that would be a value to the region and the residents of the state?

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Threshold MIN-2 Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan?

METHODOLOGY
Potential impacts to mineral resources associated with the Modified Project were evaluated by examining the location of known, mapped, existing mineral resources and evaluating the Modified Project’s effect on such resources.

4.12.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior EIR?
Would the Modified
Project be
implemented under
changed
circumstances
resulting in new or
more severe impacts
requiring revisions to
the Prior EIR?
Is there new
information that
would result in
new or more severe
impacts from the
Modified Project
requiring revisions
to the Prior EIR?
Would the
Modified Project
result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

MIN-1 Result in the loss of
availability of a
known mineral
resource that would
be a value to the
region and the
residents of the
state?
MIN -2 Result in the loss of
availability of a
locally important
mineral resource
recovery site
delineated on a
local general plan,
specific plan or
other land use plan?

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IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
Impact MIN-1: Result in the loss of availability of a known mineral resource that would be a value to the region and the residents of the state? Impact MIN-2: Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The City’s General Plan Figure ER-8 maps locations of industrial minerals within the City’s SOI, showing the southern portion of the GRRSP Planning Area partially covered by an MRZ3a area, indicative of areas containing known mineral occurrences of undetermined mineral resource significance. General Plan Figure ER-9 maps the location of aggregate resources within the City’s SOI, showing none of the GRRSP Planning Area is mapped as an aggregate zone. General Plan Figure ER-10 maps the location of areas of regional mineral significance within the City’s SOI, showing none of the GRRSP Planning Area is mapped as an area of regional mineral significance. The southern portion of the GRRSP Planning Area that is mapped as MRZ-3b is part proposed PA 6, planned for Open Space General and dedication to the RCA for inclusion in the habitat reserve assembly in accordance with the WR-MSHCP.

For these reasons, the Modified Project would not result in the loss of or availability of a locally or regionally significant mineral resource resulting in a less than significant impact requiring no mitigation. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

4.12.8 CUMULATIVE IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Less Than Significant Impact/No Changes or No New Information Requiring Preparation of an EIR.

As discussed under Impact MIN-1 and MIN-2, the Modified Project would not result in the loss of or availability of a locally or regionally significant mineral resource. Consistency with the City’s General Plan goals regarding mineral resource protection and adherence to the Municipal Code’s obligatory requirements regarding mineral resource protection, all development projects within the City will ensure mineral resources are adequately protected.

Therefore, the Modified Project’s effect on mineral resources are cumulatively less than significant. The Modified Project’s cumulative impacts associated with mineral resources are

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consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged.

4.12.9 MITIGATION MEASURES IDENTIFIED IN PRIOR EIR APPLICABLE TO

MODIFIED PROJECT
No mitigation measures were included in the 2001 EIR.

4.12.10 NEW MITIGATION MEASURES APPLICABLE TO MODIFIED PROJECT No mitigation measures are required.

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4.13 NOISE

4.13.1 INTRODUCTION
This section provides a summary of applicable impacts and mitigation measures from the 2001 EIR, an overview of existing noise conditions within the GRRSP Planning Area and surrounding region, a summary of applicable regulations, and analyses of potential noise impacts from implementation of the Modified Project in comparison to the Approved Project.

The Public Scoping Meeting comments from Bruce Fields, Jeanmarie Martinez, and Craig Reiter were received pertaining to this topic. The NOP comment letters from California Department of Fish and Wildlife, Don Osborne were received pertaining to this topic.

This section of the Draft SEIR is based in part on the Green River Ranch Specific Plan Amendment, SP00-001 Amendment No.1, Noise and Vibration Analysis (Noise Study), June 4, 2024, Urban Crossroads (Appendix L).

4.13.2 SUMMARY OF IMPACTS AND MITIGATION MEASURES FROM THE 2001 EIR
The 2001 EIR determined the Approved Project would result in no impact related to mineral resources as follows.
a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? Construction Traffic Noise
The 2001 EIR analyzed traffic noise impacts associated with construction of the GRRSP.

During construction of each phase of development, transport of construction equipment/materials to the construction site and worker commutes would incrementally increase noise levels on access roads leading to the site. Although there would be relatively high single event noise exposures (up to 87 dBA Lmax at 50 feet from passing trucks), when averaged over a longer period of time such as one hour or eight hours, the effect in long-term ambient noise levels would be less than 3.0 dBA which is the audible change that humans perceive. The 2001 EIR concluded short-term construction noise impacts associated with worker commute and equipment transport would not result in significant adverse impacts on noise-sensitive receptors along the access routes leading to the Approved Project, and no mitigation was identified.

On-Site Construction Noise
The 2001 EIR analyzed on-site noise impacts associated with construction of the GRRSP.

During construction of the Mixed Use (MU) area in PA 1 and Estate Residential (ER) area in

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PA 6 of the Approved Project, noise levels from grading and other construction activities were determined to reach up to 79 dBA at the closest residential homes within 200 feet of the PA 1 and 6 boundaries located east of the Approved Project site for very limited time periods during construction. The short-term noise levels at these homes would exceed the exterior noise standard for residential uses and was concluded to be a significant impact requiring mitigation.

The 2001 EIR introduced Mitigation Measures MMs 4.4.1A thru MM 4.4.1C to reduce the level of noise and associated impact. Even with implementation of these mitigation measure, the 2001 EIR determined the impact would remain significant and unavoidable to the residences within 200 feet of eastern southern property line during grading.

Operational Traffic Noise
The 2001 EIR analyzed traffic noise impacts associated with operations of the GRRSP, concluding such noise impacts on nearby sensitive uses would be less than significant.

However, the 2001 EIR determined the Approved Project’s ER dwelling units would be exposed to noise levels exceeding standards. Mitigation Measures MMs 4.4.2A and 4.4.2B was introduced to mitigate these impacts to less than significant. The environment’s impacts on a proposed project are “reverse CEQA” and therefore not an impact from a proposed project on the environment. For this reason, it can be concluded operational traffic noise impacts from the approved Project would be less than significant with no mitigation required.

On-Site Operational Noise
The 2001 EIR analyzed on-site noise impacts associated with operations of the GRRSP.

Operational on-site noise impacts would be generated by stationary sources at the planned MU and GC commercial, retail, and industrial uses in PAs 1, 2, 3, 4, 5, and 7 of the Approved Project. The planned on-site commercial and industrial uses would generate noise from loading/unloading activities and other activities at the parking lot. These activities are point sources of noise that could affect noise sensitive receptors adjacent to the commercial and industrial uses within the Approved Project. The 2001 EIR concluded no significant operational noise impacts would occur from on-site stationary sources. b) Generation of excessive groundborne vibration or groundborne noise levels? The 2001 EIR did not analyze potential impacts associated with the Approved Project’s groundborne vibration or groundborne noise impacts.
c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels?
The 2001 EIR analyzed potential affects on air traffic movements, and concluded no impact would occur because no air corridors exist on, or in the vicinity of the Approved Project site.

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4.13.3 ENVIRONMENTAL SETTING
Ambient noise in the GRRSP Planning Area is dominated by traffic noise from SR-91 and Green River Road. To describe the existing noise environment, noise levels were measured at nearby sensitive receiver locations surrounding the Modified Project site. Table 4.13-1 identifies the hourly daytime (7:00 a.m. to 10:00 p.m.), nighttime (10:00 p.m. to 7:00 a.m.), and Community Noise Equivalent Level (CNEL) noise levels at each noise level measurement location.

Table 4.13-1: 24-Hour Ambient Noise Level Measurements
Location Description
Energy Average
Noise Level
(dBA Leq)1 CNEL
Daytime Nighttime
L1
Located north of the Project site on
Prado Road near existing single-family
residential home at 4567 Pennyroyal
Drive.

68.6 69.2 75.8
L2
Located east of the Project site on
Dominguez Ranch Road near existing
single-family residential home at 1230
Dominguez Ranch Road.

63.1 61.1 68.2
L3
Located west of the Project site on San
Viscaya Circle near existing singlefamily residential home at 4311 San Viscaya Circle.

52.1 47.5 55.2
L4
Located west of the Project site on
Green River Road by James Dawson
indoor lodging at 19800 Lords
Canyon.

68.3 64.5 71.9
L5
Located northwest of the Project stie
on Crestridge Drive near existing
single-family residential home at 4717
Green River Road.

64.7 61.1 69.0
1 Energy (logarithmic) average levels. The long-term 24-hour measurement worksheets are included in Appendix W. "Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m.

4.13.4 PROJECT DESIGN FEATURES (PDF)
No Project Design Features are proposed for the Modified Project.

4.13.5 EXISTING REGULATIONS, PLANS, PROGRAMS, AND POLICIES

FEDERAL REGULATIONS
There are no federal regulations related to noise that apply to the Modified Project.

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STATE REGULATIONS
California regulates freeway noise, sets standards for sound transmission, provides occupational noise control criteria, identifies noise standards, and provides guidance for local land use compatibility. State law requires that each county and city adopt a General Plan that includes a Noise Element which is to be prepared per guidelines adopted by the Governor’s Office of Planning and Research (OPR). The purpose of the Noise Element is to limit the exposure of the community to excessive noise levels. In addition, CEQA requires that all known environmental effects of a project be analyzed, including environmental noise impacts.

REGIONAL REGULATIONS
There are no regional regulations related to noise that apply to the Modified Project.

LOCAL REGULATIONS
City of Corona General Plan Noise Element
The City of Corona has adopted a General Plan Noise Element to control and abate environmental noise, and to protect the citizens of the City of Corona from excessive exposure to noise. The Noise Element specifies the maximum allowable exterior noise levels for new developments impacted by transportation noise sources such as arterial roads, freeways, airports and railroads. In addition, the Noise Element identifies several polices to minimize the impacts of excessive noise levels throughout the community and establishes noise level requirements for all land uses. To protect City of Corona residents from excessive noise, the Noise Element contains the following four goals:
• Goal N-1: Protect residents, visitors, and noise-sensitive land uses from the adverse human health and environmental impacts created by excessive noise levels from transportation sources by requiring proactive mitigation. • Goal N-2: Prevent and mitigate the adverse impacts of excessive ambient noise exposure on residents, employees, visitors, and noise-sensitive land uses. • Goal N-3: Discourage the spillover or encroachment of unacceptable noise levels from mixed use, commercial, and industrial land uses on to noise sensitive land uses. • Goal N-4: Minimize noise impacts created by railroad transit and airport operations and flight patterns on residential areas and other “noise sensitive” land use areas.

The noise criteria identified in the Noise Element, Table N-1: Noise Levels and Land Use Compatibility Guidelines, are guidelines to evaluate the land use compatibility of transportation related noise. The compatibility criteria shown on General Plan Noise Element provides the City with a planning tool to gauge the compatibility of land uses relative to

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existing and future exterior noise levels. The Noise Levels and Land Use Compatibility Guidelines describes categories of compatibility and not specific noise standards.

Noise Levels and Land Use Compatibility
The proposed GRRSPA contains BPI and GC land uses that are considered clearly compatible with unmitigated exterior noise levels of less than 70 dBA CNEL, normally compatible with unmitigated exterior noise levels above 80 dBA CNEL. Although specific development plans are proposed for the BPI Development but not proposed for the other GC and ER of the GRRSP, the noise sensitive ER land uses are considered clearly compatible with unmitigated exterior noise levels of less than 60 dBA CNEL, normally compatible with unmitigated exterior noise levels above 70 dBA CNEL and clearly incompatible with unmitigated exterior noise levels above 70 dBA CNEL. For normally compatible land use, new construction should be undertaken only after detailed analysis of the noise reduction requirements and needed noise insulation features are determined. Conventional construction, with windows closed and fresh air supply or air conditioning, will normally suffice. For normally incompatible land use, new construction or development should generally be discouraged. If new construction or development does proceed, a detailed analysis of noise reduction requirements must be made and needed noise insulation features included in the design. For clearly incompatible land use, new construction or development should generally not be undertaken.

Land Use Noise Standards
The General Plan Noise Element specifies the maximum noise levels allowable for new developments impacted by transportation noise sources such as arterial roads, freeways, airports and railroads. For noise-sensitive residential land uses, Noise Element Table N-2:

Interior and Exterior Noise Standards indicates that the exterior noise levels shall not exceed 65 dBA CNEL and interior noise levels of 45 dBA CNEL. The 65 dBA CNEL exterior noise standards typically apply to outdoor areas where people congregate. The City does not identify any exterior noise standards for the proposed BPI Development or planned GC uses.

Operational Noise Standards
To analyze noise impacts originating from the GRRSPA, operational source noise such as loading dock activity, truck movements, roof-top air conditioning units, gas station activity, drive-thru activity, and trash enclosure activity, car wash tunnels and car wash vacuums are typically evaluated against standards established under a City’s Municipal Code. Municipal Code, Section 17.84.040 Noise, provides noise control guidelines for determining and mitigating non-transportation or stationary-source noise impacts from operations at private properties. The Municipal Code defines Stationary Noise Source Standards in Section

17.84.040[C][2], Table 1, for different land uses. For noise-sensitive residential properties, the Municipal Code identifies operational noise level limits for the daytime (7:00 a.m. to 10:00 p.m.) hours of 55 dBA L50 and 50 dBA L50 during the nighttime (10:00 p.m. to 7:00 a.m.)

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hours. These standards shall apply for a cumulative period of 30 minutes in any hour, as well as plus 5 dBA cannot be exceeded for a cumulative period of more than 15 minutes in any hour, or the standard plus 10 dBA for a cumulative period of more than 5 minutes in any hour, or the standard plus 15 dBA for a cumulative period of more than 1 minute in any hour, or the standard plus 20 dBA for any period of time.

4.13.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City of Corona, significant agricultural and forest resources impacts would occur if the proposed Project or any Project-related component would:

Threshold N-1 Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies?
Threshold N-2 Generation of excessive groundborne vibration or groundborne noise levels?
Threshold N-3 For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels?

METHODOLOGY
Potential noise impacts associated with the Modified Project were evaluated using the significance criteria summarized in Tables 4.13-2 and 4.13.3 as follows.

Table 4.13-2: Significance Criteria Summary
Analysis Receiving
Land Use Condition(s) Significant Criteria
Daytime Nighttime
Off-Site
Traffic
Noise
Sensitive1
if ambient is < 60 dBA CNEL ≥ 5 dBA CNEL Project increase if ambient is 60 - 65 dBA CNEL ≥ 3 dBA CNEL Project increase if ambient is > 65 dBA CNEL ≥ ≥ 1.5 dBA CNEL Project increase Non-NoiseSensitive2 if ambient is > 70 dBA CNEL ≥ ≥ 3 dBA CNEL Project increase On-Site
Traffic
Residential3 Exterior Noise Level 65 dBA CNEL
Interior Noise Level 45 dBA CNEL
Operational
NoiseSensitiveExterior Noise Level Standards4 See Table 4.13-3 if ambient is < 60 dBA Leq1 ≥ 5 dBA Leq Project increase

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Table 4.13-2: Significance Criteria Summary
Analysis Receiving
Land Use Condition(s) Significant Criteria
Daytime Nighttime
if ambient is 60-65 dBA Leq1 ≥ 3 dBA Leq Project increase if ambient is > 65 dBA Leq1 ≥ 1.5 dBA Leq Project increase Non-NoiseSensitive2If ambient is > 70 dBA CNEL ≥ 3 dBA Leq Project increase Construction
NoiseSensitiveProhibited between the hours of 8:00 p.m. to 7:00 a.m., Monday through Saturday and 6:00 p.m. to 10:00 a.m. on Sundays and federal holidays.5 Noise Level Threshold6 80 dBA Leq 70 dBA Leq
Vibration Level Threshold7 0.05 in/sec RMS
1 FICON, 1992.
2 City of Corona General Plan Noise Element (Table N-1) 3 City of Corona General Plan Noise Element Table N-2 Interior and Exterior Noise Standards. 4 City of Corona Municipal Code, Section 17.84.040 Noise[C][2] (Appendix 3.1). 5 City of Corona Municipal Code, Section 17.84.040[D][2] Noise (Appendix 3.1). 6 Federal Transit Administration, Transit Noise and Vibration Impact Assessment Manual, 2018. 7 City of Corona Municipal Code, Section 17.84.050 Vibration (Appendix 3.1). "Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m.; "RMS" = root-mean-square Table 4.13-3: Operational Noise Standards
Jurisdiction Land Use Time
Period
Exterior Noise Level Standards (dBA Leq)2
L50
(30
mins)
L25
(15 mins)
L8
(5 mins)
L2
(1 min)
Lmax
(anytime)
City of
Corona1
Residential Daytime 55 60 65 70 75
Nighttime 50 55 60 65 70
Commercial Daytime 65 70 75 80 85
Nighttime 60 65 70 75 80
Industrial Daytime 75 80 85 90 95
Nighttime 70 75 80 85 90
1 City of Corona Municipal Code, Section 17.84.040 Noise (Appendix 3.1). 2 The percent noise level is the level exceeded "n" percent of the time during the measurement period. L50 is the noise level exceeded 50% of the time.
"Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m.

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4.13.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior
EIR?
Would the
Modified Project be
implemented under
changed
circumstances
resulting in new or
more severe
impacts requiring
revisions to the
Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the
Modified Project
requiring
revisions to the
Prior EIR?
Would the
Modified
Project result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

N-1 Generation of a substantial
temporary or permanent
increase in ambient noise
levels in the vicinity of the
project in excess of
standards established in the
local general plan or noise
ordinance, or applicable
standards of other agencies?
N-2 Generation of excessive
groundborne vibration or
groundborne noise levels?
N-3 For a project located within
the vicinity of a private
airstrip or an airport land
use plan or, where such a
plan has not been adopted,
within two miles of a public
airport or public use airport,
would the project expose
people residing or working
in the project area to
excessive noise levels?

IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
Impact N-1: Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

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Construction Noise
Noise generated by during construction of each phase of the Modified Project will include a combination of trucks, power tools, concrete mixers, and portable generators that when combined can reach high levels. The number and mix of construction equipment are expected to occur in the following stages of construction: demolition; site preparation; grading; building construction; paving; and architectural coating. As shown in Table 4.13-2, Municipal Code Section 17.84.040[D][2] states that construction noise is prohibited between the hours of 8:00 p.m. to 7:00 a.m., Monday through Saturday and 6:00 p.m. to 10:00 a.m. on Sundays and federal holidays to prevent high levels of construction noise from impacting noise-sensitive land uses.

The Noise Study evaluated potential construction noise impacts by adding construction noise estimated for each stage of construction to existing noise levels measured at receiver locations in the northern and eastern edges of the GRRSP boundary. Using typical construction equipment noise levels and the CadnaA noise prediction model, construction noise levels were calculated and associated impacts were identified assuming multiple pieces of equipment were in operations simultaneously at the nearest sensitive receiver locations. To assess the upper end of potential noise levels and therefore avoid under estimating potential impacts, the construction noise analysis used the highest noise level impacts when the equipment with the highest reference noise level was operating at the closest point from the edge of construction to each receiver location. Based on these conservative assumptions, the construction noise levels were determined to range from 46.6 to 69.9 dBA Leq, and the highest construction levels were determined to range from 56.7 to 69.9 dBA Leq at the nearest receiver location R1 located north of proposed PA 4, north of SR-91 and Prado Road, near existing single-family residences on Pennyroyal Drive. The Noise Study determined a construction-related daytime noise level threshold of 80 dBA Leq is a reasonable threshold to assess the daytime construction noise level impacts. Based on the highest construction noise level of 69.9 dBA Leq calculated at receiver location R1, daytime construction noise would satisfy the daytime 80 dBA Leq significance threshold during construction of all phases of the GRRSP (Modified Project). Therefore, construction noise impacts are considered less than significant at all receiver locations and no mitigation is required.

Although a noise variance from the City of Corona is required, nighttime concrete pouring activities may occur as a part of construction activities to reduce concrete mixer truck delivery times during off peak traffic periods and to take advantage of naturally occurring lower nighttime air temperatures. These activities are typically limited to the actual building area.

Since the nighttime concrete pours may take place outside the permitted hours of construction, the Project Applicant or Contractor would be required to obtain prior authorization for nighttime work from the City and receipt of a Noise Variance application pursuant to

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Municipal Code Section 17.84.040(H). The noise variance would need to be approved prior to the issuance of a grading or building permit associated with the nighttime work.

The Noise Study estimated noise levels during concrete pour activities (paving) and determined noise levels would range from 43.4 to 62.5 dBA Leq at the nearest sensitive receiver locations. Based on a nighttime noise level significance threshold of 70 dBA Leq, the Noise Study concluded noise levels during nighttime concrete pour activities would satisfy the nighttime construction noise level significance threshold. Therefore, the unmitigated nighttime concrete pour noise level impacts are considered less than significant and no mitigation is required.

For these reasons, the Modified Project would not result in a construction noise impact during construction of all phases of the GRRSP’s development and no mitigation is required.

Therefore, no new or substantially greater construction noise impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Operational Traffic Noise
Off-site transportation noise level impacts were determined based estimating roadway noise levels using traffic volumes from the GRRSPA Traffic Study for each phase of the proposed GRRSPA and for existing, opening year, and future horizon year scenarios. Noise contours were developed measured in CNEL from the center of the roadway for the 70, 65, and 60 dBA CNEL noise levels. A summary of the noise levels for each scenario with buildout of the GRRSP follows.

Existing Plus Project Buildout Traffic Noise Level Impacts: An analysis of existing traffic noise levels plus traffic noise generated by the entire GRRSP was provided to fully analyze project level impacts attributable to the Modified Project. Although there are no development plans included as part of the Modified Project for the GC (PA 4) and ER (PA 5), the buildout condition was provided for informational purposes and is not expected to occur.

Existing with Project Buildout traffic noise levels were estimated to range from 66.2 to 73.2 dBA CNEL. The noise level increase attributable to the Modified Project was determined to range from 0.2 to 0.8 dBA CNEL. Based on the significance criteria for off-site traffic noise presented in Table 4.13-2, land uses adjacent to the study area roadway segments would experience less than significant noise level increases on receiving land uses due to projectrelated traffic. For these reasons, the Modified Project would not result in an operational traffic noise impact in the existing condition with all phases of the GRRSP’s development and no mitigation is required.

Opening Year Cumulative Plus Project Buildout Traffic Noise Level Impacts: Opening Year Cumulative with Project Buildout traffic noise levels were estimated to range from 66.4 to 72.0 dBA CNEL. The noise level increase attributable to the Modified Project was determined to

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range from 0.2 to 1.7 dBA CNEL. Based on the significance criteria for off-site traffic noise presented in Table 4.13-2, land uses adjacent to the study area roadway segments would experience less than significant noise level increases on receiving land uses due to projectrelated traffic. For these reasons, the Modified Project would not result in an operational traffic noise impact in the opening year cumulative scenario with all phases of the GRRSP’s development and no mitigation is required.

Future Horizon Year Plus Project Buildout Traffic Noise Level Impacts: Future Horizon Year with Project Buildout traffic noise levels were estimated to range from 66.4 to 72.4 dBA CNEL. The noise level increase attributable to the Modified Project was determined to range from 0.2 to 1.6 dBA CNEL. Based on the significance criteria for off-site traffic noise presented in Table 4.13-2, land uses adjacent to the study area roadway segments would experience less than significant noise level increases on receiving land uses due to projectrelated traffic. For these reasons, the Modified Project would not result in an operational traffic noise impact in the future horizon year scenario with all phases of the GRRSP’s development and no mitigation is required.

Therefore, no new or substantially greater operational traffic noise impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

On-Site Operational Noise
The Noise Study evaluated potential stationary-source operational noise impacts at the nearest receiver locations resulting from the operation of the proposed GRRSPA. Because there are no development details for the proposed GC uses in PA 4, the underlying uses permitted or conditionally permitted in the proposed GRRSPA for the GC land use designation by were used to estimate operational noise levels from this area of the GRRSP.

To estimate operational commercial noise, several commercial noise sources were assumed throughout the GC area in PA 4 to ensure potential noise from the potential GC are addressed.

At the time the Noise Study was prepared, future tenants of the Modified Project including the BPI Development were unknown. Therefore, the operational noise analysis defined noise level impacts associated with the expected typical of daytime and nighttime activities associated with the range of land uses that could occur in each of the GRRSP PAs. It was assumed the GC land uses would operate during normal business hours and the BPI Development would operate 24 hours per day, seven days per week. The BPI industrial and warehouse operations would primarily be conducted within the enclosed buildings, except for traffic movement, parking, as well as loading and unloading of trucks at designated loading bays. The GC and BPI on-site project-related noise sources could include a wide range of noise sources.

Operational noise levels from these types of activities were used to estimate expected noise levels resulting from development and operation of the Modified Project. The reference noise

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level measurements represent typical noises from a range of operational activities including:
loading dock activity, truck movements, roof-top air conditioning units, gas station activity, parking lot vehicle movements, drive-thru activity, trash enclosure activity, car wash tunnels and car wash vacuums. The projected noise levels assume a worst-case noise condition in which these noise activities were in operation continuously, although these sources of noise will likely vary throughout the day.

Noise level measurements were collected from existing noise activity locations to obtain reference noise levels. The resulting referenced noise levels used in the analysis of operational noise impacts are as follows:
• Loading Dock Activity: Reference noise level measurements were taken in the center of loading docks, and represent multiple concurrent noise sources resulting in a combined noise level of 65.7 dBA Leq at a uniform distance of 50 feet. • Truck Movements: Truck movements reference noise level measurement were taken over a 15-minute period and represent multiple noise sources producing a reference noise level of 58.0 dBA Leq at 50 feet.
• Roof-Top Air Conditioning Units: The noise level measurements collected represent a single mechanical roof-top air conditioning unit, a Lennox SCA120 series 10-ton model packaged air conditioning unit. At the uniform reference distance of 50 feet, the reference noise level is 57.2 dBA Leq.
• Gas Station Activity: A noise level measurement was collected at a gas station that included six cars fueling at once, car doors closing, engines starting, fuel pump running, TV sounds, and background car pass-by events within a 3-minute period. At 50 feet from the gas station, a reference noise level of 48.2 dBA Leq was measured. • Parking Lot Vehicle Movements: A 29-hour reference noise level measurement was collected in the center of warehouse distribution center staff parking lot of a. At 50 feet from the center, the parking lot produced a reference noise level of 56.1 dBA Leq. • Drive-Thru Activity. A noise level measurement was collected at drive-thru with speakerphones and vehicle activity. The noise sources included in the reference noise level measurement consisted of voices of the employees over the speakerphone, customers’ voices ordering food, car engines idling, car radios playing music, and cars queuing in the drive-thru lane. At 50 feet from the speakerphone, a reference noise level of 51.5 dBA Leq was measured.
• Trash Enclosure Activity: The measured reference noise level at the uniform 50-foot reference distance is 57.3 dBA Leq for the trash enclosure activity. The reference trash enclosure activity included two metal gates opening and closing, metal scraping against

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concrete floors, dumpster movement on metal wheels, trash dropping into the metal dumpster, and background parking lot vehicle movements. • Car Wash Tunnel: A reference noise level measurement was collected at a car wash to define typical noise from air blowers used in a car wash tunnel. A reference noise level of 74.3 dBA Leq was measured at a uniform distance of 50 feet. The reference noise level measurement includes an exposed five-unit air blower system with background pressure washer noise. The air dryers within were assumed to be operating continuously during the peak operating conditions. The car wash tunnel would be limited to daytime hours only.
• Car Wash Vacuum: A reference noise level measurement was collected at an express car wash, representing up to four vacuums operating simultaneously. At a uniform reference distance of 50 feet, the vacuum reference noise level was 54.6 dBA Leq. The car wash vacuum would be limited to the daytime hours only.

Using the reference noise levels described above, operations of the GC and BPI Development land uses would include noise from loading dock activity, truck movements, roof-top air conditioning units, gas station activity, drive-thru activity, trash enclosure activity, car wash tunnels and car wash vacuums. Based on the reference noise levels and their location within the GRRSP Planning Area, project-related noise level increases would be experienced at each of the sensitive receiver locations. Operational noise levels during the daytime hours of 7:00 a.m. to 10:00 p.m. were estimated to range from 32.3 to 53.6 dBA Leq. Operational noise levels during the nighttime hours of 10:00 p.m. to 7:00 a.m. were estimated to range from 30.6 to

49.6 dBA Leq.

Evaluation of project-only operational noise levels for compliance with the City’s exterior noise level thresholds was conducted. As concluded in the Noise Study, the operational noise levels associated with full development of the GRRSPA described above would meet the City’s 55 dBA Leq daytime and 50 dBA Leq nighttime exterior noise level standards at all the nearest receiver locations. Therefore, the operational noise impacts are considered less than significant and no mitigation is required.

Project operational noise level increases at the nearest receiver locations were compared to ambient conditions to evaluate the change in noise attributable to the Modified Project. The difference between the combined Project and ambient noise levels defines the Project noise level increase to the ambient noise environment. The Modified Project would generate operational noise level increases ranging from 0.0 to 4.2 dBA at the nearest receiver locations.

Project-related operational noise level increases will satisfy the operational noise level increase significance criteria presented on Table 4.13-2. Therefore, the incremental increase in noise to the ambient environment attributable to the proposed Modified Project is considered less than significant and no mitigation is required.

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As summarized previously, the 2001 EIR determined construction noise impacts from the Approved Project would remain significant and unavoidable to the residences within 200 feet of eastern/southern property line during grading even with implementation of mitigation. As detailed above, construction noise impacts attributable to the Modified Project were determined to be less than significant and no mitigation is required. Therefore, no new or substantially greater construction noise impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

Impact N-2: Generation of excessive groundborne vibration or groundborne noise levels?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

Groundborne vibration and noise generated during the operational phase of a typical development project are barely perceptible beyond the boundary of a given project and rarely produce a nuisance to neighboring land uses. For this reason, the Noise Study analyzed potential construction vibration impacts associated with construction of the Modified Project.

Construction can result in varying degrees of ground vibration depending on the construction equipment and vehicles used, construction methods employed, distance to the affected location, and soil type. It is expected that ground-borne vibration from the Modified Project’s construction activities would cause only intermittent, localized intrusion. Estimated construction equipment vibration estimated during construction of the Modified Project were calculated for the nearest receiver locations. At distances ranging from 246 feet to 986 feet from typical construction activities at the Modified Project site boundary, construction vibration levels were estimated to range from 0.0000 to 0.003 in/sec RMS at the nearest receiver locations. These vibration levels would not exceed the City’s maximum acceptable vibration standard of 0.05 in/sec (RMS). Further, impacts at the site of the closest sensitive receiver are unlikely to be sustained during the entire construction period but will occur rather only during the times that heavy construction equipment is operating proximate to the Project site perimeter and construction would be restricted to daytime hours consistent with City requirements thereby eliminating potential vibration impact during nighttime hours. Vibration impacts associated with construction of the Modified Project are considered to be less than significant and no mitigation is required.

Therefore, no new or substantially greater construction groundborne vibration impact would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

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Mitigation Measure
No mitigation measures are required.

Impact N-3: For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The nearest airport to the GRRSP Planning Area is Corona Municipal Airport, located approximately three miles to the northeast. Since the Project is located more than two miles away from the nearest airport, potential impacts associated with exposure of people residing or working within the Modified Project area to excessive aircraft noise levels is considered less than significant and no mitigation is required.

Mitigation Measure
No mitigation measures are required.

4.13.8 CUMULATIVE IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Less Than Significant Impact/No Changes or No New Information Requiring Preparation of an EIR.

The cumulative projects in the vicinity of the Modified Project are all located more than 1,000 feet away from the GRRSP Planning Area, and therefore would not contribute substantially to cumulative noise and vibration impacts at receptors near the proposed GRRSP during shortterm construction or long-term operational activities. Noise naturally attenuates at 6 dB every doubling of distance of the reference noise source. Most construction equipment has a reference noise source of 50 feet. Therefore, at 500 feet noise will have naturally attenuated over 20 dB, which also does not account for other natural attenuation such as topography, vegetation, or other structures. As a result, the Modified Project’s potential to contribute to any noise or vibration- related cumulative impacts would be considered less than significant.

4.13.9 MITIGATION MEASURES IDENTIFIED IN PRIOR EIR APPLICABLE TO

MODIFIED PROJECT
The 2001 EIR determined the Approved Project would result in a significant impact from construction noise and introduced Mitigation Measures MMs 4.4.1A thru MM 4.4.1C to reduce the level of noise and associated impact. Even with implementation of these mitigation

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measure, the 2001 EIR determined the impact would remain significant and unavoidable to the residences within 200 feet of eastern/southern property line during grading. As detailed above in section 4.13.7, construction noise impacts attributable to the Modified Project were determined to be less than significant and no mitigation is required including the previous mitigation measures identified in the 2001 EIR for the Approved Project.

4.13.10 NEW MITIGATION MEASURES APPLICABLE TO MODIFIED PROJECT No mitigation measures are required.

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4.14 POPULATION AND HOUSING

4.14.1 INTRODUCTION
This section provides a summary of applicable impacts and mitigation measures from the 2001 EIR, an overview of existing population and housing conditions within the GRRSP Planning Area and surrounding region, a summary of applicable regulations, and analyses of potential changes in population and housing impacts from implementation of the Modified Project in comparison to the Approved Project. No Scoping Meeting comments or NOP comment letters were received pertaining to this topic.

4.14.2 SUMMARY OF IMPACTS AND MITIGATION MEASURES FROM THE 2001 EIR
The 2001 EIR determined the Approved Project would result in less than significant impacts population and housing as follows.
a) Exceed population projections?
The 2001 EIR noted the 1999 City population was estimated at 117,292 residents and projections from the Southern California Association of Governments (SCAG) estimated the population would reach 154,085 by the year 2020. Based on the City’s average household size of 3.07 persons/dwelling unit (DUS), the 32 ER DUs proposed as part of the Approved Project would increase the population by 98 persons (or 0.08 percent). The 2001 EIR determined this increase would not exceed either Corona’s or SCAG's projections, resulting in no impact related to local or regional population projections.
b) Induce substantial growth?
The 2001 EIR noted the Approved Project would create new short-term jobs during construction and such construction would utilize construction personnel from the local labor force, thus limiting the demand for housing by these workers. Upon completion, the 2001 EIR noted the commercial development planned as part of the Approved Project would result in an increase in part-time and full-time employment in the area and these workers would most likely be from the local area resulting in continued growth and development in the immediate area.

Any required infrastructure improvements would be paid for on a fair-share basis by the new development that benefits from these facilities. The 2001 EIR noted the prior General Plan land use designations underlying the Approved Project at that time consisted of Light Industry and Agriculture/Rural Residential, indicating the City’s intent to allow development to occur.

Therefore, the 2001 EIR concluded the Approved Project would not be expected to serve as an inducement for new development in the area beyond that predicted in the City’s General Plan and growth-related impacts would be less than significant.

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c) Displace housing?
The 2001 EIR noted the Approved Project site did not contain any existing housing that constitutes a community or neighborhood. A number of trailers were identified that were being used at that time for housing, and that these would be removed as part of project construction.

In addition, the St. James Christian Orthodox Monastery was noted as occupying a portion of the Approved Project site. The 2001 EIR concluded the removal of the trailers and monastery structures would not significantly impact housing or housing options in the City or vicinity.

4.14.3 ENVIRONMENTAL SETTING
Population
The City’s 2024 population is estimated to be 156,615 according to State Department of Finance (DOF) estimates released in May 2024.1 This is less than the population estimate from SCAG as shown below in Table 4.14-1. Table 4.14-1 also presents future population estimates for the City plus 2020 and future population estimates for California.

Table 4.14-1: City of Corona Population, Households, and Employment Projections
Adopted City of Corona Forecasts
Year
2020
Year
2030
Year
2035
Year
2045
Population 166,904 174,061 177,702 185,073
Households 47,358 49,407 50,437 52,444
Employment 81,271 8,695,427 84,480 92,776
Housing
The City’s 2024 housing is estimated to be 50,915 units according to State Department of Finance (DOF) estimates released in May 2024.

4.14.4 PROJECT DESIGN FEATURES (PDF)
No Project Design Features are proposed for the Modified Project. 1 Report E1 & E1-H, Population and Housing Estimates for Cities, Counties, and the State — January 1, 2023 and 2024, State of California Department of Finance, May 2024.

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4.14.5 EXISTING REGULATIONS, PLANS, PROGRAMS, AND POLICIES

FEDERAL REGULATIONS
There are no federal regulations related to population and housing that apply to the Modified Project.

STATE REGULATIONS
Housing Element Law and Regional Housing Needs Assessment California planning and zoning law requires cities and counties to adopt a general plan to plan for and guide future growth within their jurisdiction. This plan is required to include a housing element that identifies housing needs for all economic segments of the local community, and provides opportunities for housing development to meet that need. The California Housing and Community Development Department (HCD) estimates the relative share of California’s projected population growth that would occur in each county based on DOF population projections and historical growth trends. This data is compiled by HCD in a Regional Housing Needs Assessment (RHNA) for each region of California. The HCD provides the RHNA to the regional council of governments or appropriate county agency and the council assigns a share of the regional housing need to each of its cities and counties. The process of assigning shares gives cities and counties the opportunity to comment on the proposed allocations. The HCD oversees the process to ensure that the council of governments distributes its share of the state’s projected housing need.

California housing element laws require that each city and county identify and analyze existing and projected housing needs within its jurisdiction and prepare goals, policies, and programs to further the development, improvement, and preservation of housing for all economic segments of the community commensurate with local housing needs.

REGIONAL REGULATIONS
Regional Transportation Plan/Sustainable Community Strategy SCAG adopted the 2020–2045 RTP/SCS, “Connect SoCal,” in 2020 which builds upon and expands land use and transportation strategies established over several planning cycles to increase mobility options and achieve a more sustainable growth pattern. The long-range visioning plan balances future mobility and housing needs with goals for the environment, the regional economy, social equity and environmental justice, and public health.

LOCAL REGULATIONS
City of Corona General Plan
The Corona General Plan was prepared to comply with California’s planning and zoning law mandating each city adopt a comprehensive, long-range, internally consistent plan for its future

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development. The General Plan also addresses the provision of services needed and desired by the community to support its ultimate development. The General Plan addresses the eight required elements including land use, housing, circulation, conservation and open space (as environmental resources), noise, safety, and environmental justice plus elective elements community design, historic resources, parks and recreation, infrastructure/utilities, public safety, and healthy community. The Housing Element was prepared in accordance with State requirements and was most recently updated in 2022.

The following are relevant policies of the Corona General Plan which may reduce potential population and housing impacts as a result of implementation of the Modified Project.

Housing Element
Housing Production
• H-1.1: Continue to support public and private sector nonprofit and for-profit organizations in their efforts to construct, acquire, and improve housing to provide access to affordable housing to lower and moderate-income households. • H-1.2: Promote specific plans and zoning amendments that provide a variety of housing types and densities based on the suitability of the land, including the availability of infrastructure, the provision of adequate City services and recognition of environmental constraints.
• H-1.3: Provide sites for residential development so that scarcity of land does not unduly increase the cost or decrease the availability of housing for all segments of the community.
• H-1.4: Support the development of sustainable projects that reduce demand for water and energy resources, reduce commute times and operational costs, and provide for transit-oriented development.
• H-1.5: Create or expand zoning designations and commensurate development standards to encourage flexibility in permitted land use types that respond to changing market forces and provided opportunities for higher density residential development, mixed use residential/commercial development, and transit oriented residential development in appropriate areas of the City.

Special Housing Needs
• H-2.1: Encourage the development of rental units with three or more bedrooms to provide affordable housing for large families.
• H-2.2: Work with nonprofit agencies and private sector developers to encourage development of senior housing.

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• H-2.3: Encourage the production of assisted living facilities (single story houses and apartments) for the disabled and the elderly.
• H-2.4: Provide emergency shelter with transitional support for City residents, including disadvantaged groups.
• H-2.5: Encourage the upgrade and conversion of older motels to single-roomoccupancy housing.

Economic Development
Economic Base
• ED-1.1: Encourage a variety of industries to locate in Corona, including commercial/professional office uses, specialized medical services, manufacturing, and “clean,” high technology industries that provide high-skill/high-wage job opportunities.
• ED-1.2: Encourage the expansion of existing businesses in Corona if possible and extend efforts at business retention.
• ED-1.3: Utilize Specific Plans to define flexible growth areas that allow for the transition of heavy industrial to research and development to mixed-use and office uses, while allowing some viable heavy industrial areas to remain industrial. • ED-1.4: Encourage the growth of manufacturing companies and allied supporting businesses in Corona by providing education and resources to support their efforts to export products globally.
• ED-1.5: Facilitate the retention and expansion of existing jobs-generating industries within existing and planned industrial areas to allow such industries to remain in Corona.
• ED-1.6: Periodically monitor the market for retail commercial and office development, assessing the adequacy of existing sites to accommodate and capability of existing buildings to be adaptively re-used for community-desired commercial uses and adjust applicable codes and ordinances, as necessary.
• ED-1.7: Recruit the development of new industries and businesses that build upon Corona’s existing diversifying industrial base, transportation infrastructure, increasing demand for professional and medical services, and its proximity to key regional business centers.
• ED-1.8: Discourage the development of industrial uses that are land extensive, generate few job opportunities, contribute little revenue for the City, and foreclose the

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opportunity to maximize economic opportunities remaining on limited vacant and underutilized land.

Labor Force
• ED-2.1: Promote development of a highly skilled labor force within high-wage emerging industries such as research and development, high technology manufacturing and office-oriented occupations.
• ED-2.2: Promote professional development programs and vocational training to enhance the quality of the area’s labor force, and assist them in obtaining new employment opportunities.
• ED-2.3: Encourage growth of the specialty medical services industry which would allow for new employment opportunities and encourage the placement of skilled students within Corona. Increased medical specialties would also eliminate some traffic exiting daily to other counties for these services.
• ED-2.4: Continue to build a sustainable Labor Force by building Partnerships with local education partners like the Corona-Norco Unified School District, Norco College, and Riverside Community College.
• ED-2.5: Target the recruitment of businesses that provide high-paying jobs commensurate with the skills of Corona’s residents.

4.14.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City of Corona, significant housing and population impacts would occur if the proposed Project or any Projectrelated component would:

Threshold POP-1 Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)?
Threshold POP-2 Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere?

METHODOLOGY
Potential population and planning impacts were evaluated by analyzing potential growth inducement and housing displacement associated with the Modified Project.

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4.14.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified
Project result
in new or
more severe
impacts
requiring
revisions to
the Prior
EIR?
Would the Modified
Project be
implemented under
changed
circumstances
resulting in new or
more severe impacts
requiring revisions
to the Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the
Modified Project
requiring
revisions to the
Prior EIR?
Would the
Modified Project
result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

POP-1 Induce substantial
unplanned population
growth in an area, either
directly (for example, by
proposing new homes
and businesses) or
indirectly (for example,
through extension of
roads or other
infrastructure)?
POP-2 Displace substantial
numbers of existing
people or housing,
necessitating the
construction of
replacement housing
elsewhere?

IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
Impact POP-1: Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The Modified Project would result in up to 32 Estate Residential (ER) residences directly adding to the City’s population. In addition, the Modified Project would potentially add to the population indirectly with development of the 746,167 sf Business Park Industrial (BPI) Development and 19,600 sf of general commercial (GC) uses. The 32 ER homes would accommodate approximately 113 residents (32 dwellings x 3.52 persons/household based on the data presented in Table 4.14-1). The 746,167 sf BPI Development would produce approximately 995 employees (746,167 sf x one employee per 750 of building area). The

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19,600 sf of GC use would produce approximately 130 employees (19,600 sf x one employee per 750 of building area). Combined, the BPI and GC uses would generate 1,125 total employees. Even if 25% of the employees and their households were to move to the City, the resulting growth in population would be approximately 1,104 people (113 ER residents + 991 BPI/GC residents (1,125 emps x 3.52 residents/household x 0.25). Compared to the City’s 2024 estimated population from DOF of 156,615, the additional 1,104 residents would represent a less than one-tenth of one percent increase in population. This increase would not be considered substantial population growth and would not induce substantial unplanned population, resulting in less than significant and no mitigation is required. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

Impact POP-2: Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere?? Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The Modified Project does not contain any existing housing that constitutes a community or neighborhood. Two residences are located in the lower elevations of PAs 1, 2, and 3 and remnants of the former horse boarding facilities are scattered around PAs 1, 2, and 3. These and all structures would be demolished and removed as part of Project construction. In addition, the St. James Christian Orthodox Monastery has been abandoned and would be demolished and removed. For these reasons, the Modified Project would not significantly displace existing people or housing and would not impact housing or housing options in the City or vicinity. Therefore, no new or substantially greater impacts would occur with implementation of the Modified Project when compared to those identified in the 2001 EIR for the Approved Project.

Mitigation Measure
No mitigation measures are required.

4.14.8 CUMULATIVE IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Less Than Significant Impact/No Changes or No New Information Requiring Preparation of an EIR.

As discussed under impact POP-1 and POP-2, the Modified Project would not result in growth inducement or displacement of people or housing. The Modified Project is located at the

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western edge of the City and areas further to the west are unlikely to develop, and therefore development of the Modified Project and associated infrastructure connections would not induce growth by removing an impediment to growth. The Modified Project’s cumulative impacts associated with population and housing are consistent with the impacts identified in the 2001 EIR and the level of impact (less than significant) remains unchanged.

4.14.9 MITIGATION MEASURES IDENTIFIED IN PRIOR EIR APPLICABLE TO

MODIFIED PROJECT
No mitigation measures were included in the 2001 EIR.

4.14.10 NEW MITIGATION MEASURES APPLICABLE TO MODIFIED PROJECT No mitigation measures are required.

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4.15 PUBLIC SERVICES

4.15.1 INTRODUCTION
This section provides a summary of applicable impacts and mitigation measures from the 2001 EIR, an overview of existing public services conditions within the GRRSP Planning Area and surrounding region, a summary of applicable regulations, and analyses of potential changes in impacts to public services, specifically, fire protection, police protection, school services, and library services from implementation of the Modified Project in comparison to the Approved Project. Mitigation measures are recommended as necessary to reduce significant air quality impacts. Public Scoping Meeting comments were received from Don Osborne, Adam Ruiz were received pertaining to this topic. Jeffrey Meissner, Bruce Fields, Jeanmarie Martinez, Francesca Da Sacco, Craig Reiter were received pertaining to this topic.

Park services are addressed in Section 5.16, Recreation and public and private utilities and services, including water, wastewater, and solid waste services and systems, are addressed in Section 5.19, Utilities and Service Systems.

4.15.2 SUMMARY OF IMPACTS AND MITIGATION MEASURES FROM THE 2001 EIR
The Approved Project impact analysis related to public services as presented in the 2001 EIR as well as any mitigation measures identified to reduce significant impacts are summarized as follows:
a) Fire?
As stated in the 2001 EIR, inadequate fire response time to urban fires and wildfires within the Approved Project may produce a risk of hazard to occupants and structures located in the GRRSP. However, the Approved Project was determined to be adequately served by Station #5. Station #5 is located approximately 1 mile east of the Approved Project and can respond within the City’s five-minute service criteria. In addition, the 2001 EIR implemented mitigation measure MM 4.5.3.1A of which required the Approved Project’s water mains and water systems to be sized to provide sufficient water to meet the fire fighting requirements within the GRRSP Planning Area. The 2001 EIR determined with mitigation, potential impacts related to provisions of adequate water supplies and pressures to adequately serve the fire fighting requirements within the Approved Project will be reduced to less than significant.

As such, the 2001 EIR determined impacts from the risk of fire protection to be less than significant with implementation of mitigation.

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b) Police?
As stated in the 2001 EIR, the Approved Project could result in an increase in demand for police services as the annexation and development of the Approved Project will expand the area Corona Police Department is required to patrol. The 2001 EIR also stated after construction and occupancy of the Approved Project, theft, robbery, and burglary could become crimes occurring on property within the GRRSP Planning Area. However, the 2001 EIR, determined incremental increase in Corona Police Department’s response time is considered to be a less than significant impact.
c) Schools?
The 2001 EIR determined the Approved Project was designed to accommodate up to 32 home sites and based on Corona-Norco Unified School District standards, the Approved Project would add 24 children to the District’s student population. As such, the Approved Project, prior to the issuance of building permits, the developer will pay all fees in accordance with State and District regulations. Therefore, the 2001 EIR determined payment of these fees will reduce any impact to school facilities to less than significant. d) Parks & recreation facilities
e) Other governmental services.

The 2001 determined implementation of the Approved Project will incrementally increase demands for government services not addressed in items a thru c above (such as recreation facilities, libraries and social services) as the Approved Project’s increase was not anticipated to be significant.

4.15.3 ENVIRONMENTAL SETTING
The Modified Project site located within the western portion of the City of Corona bounded by undeveloped land on the north, partially developed land to the east, the 91 Freeway to the west, and undeveloped land to the south. Further to the south, is the Cleveland National Forest. The Open Space and Estate Residential portions of the Modified Project are located within the foothills of the Santa Ana Mountains. The BPI development portion of the Modified Project is located at the base of these foothills.

The Modified Project area is within a Local Responsibility Area (LRA) designated as a Very High Fire Hazard Severity Area (FHSZ).

Fire Protection
The City is served by the Corona Fire Department (CFD) of which operates seven fire stations in addition to the CFD Headquarters. The CFD staff consists of 244 firefighters and 107 sworn fire personnel. The Modified Project site is within the response area of CFD, Fire Station 5

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located at 1200 West Canyon Crest Drive, Fire Station 5 is located 1 mile east of the GRRSP Planning Area along Green River Road.

Police Protection
The City of Corona Police Department will provide service for the Specific Plan area upon annexation into the City. The project site is the closest to Zone 4, which is the entire west end of the City. The substation located within this zone is located in the Edwards Cinema center at the 1600 block of West 6th Street and Avenida Del Vista, approximately 5 miles from the proposed project site. The substation offices are used by patrol officers for returning calls to residents and business owners and also as a report-writing station. The Corona Police Department suggests that any matter needing police attention is brought forward through the main station, located at the corner of West 6th Street and Buena Vista Avenue. The main station is located approximately 9 miles from the proposed project site. Currently, there are 144 sworn officers and 63 support staff in the Corona Police Department.

Schools
The Corona-Norco Unified School District (CNUSD) serves most adults and youth in Corona, which includes K-12 education, alternative education, and adult education. There are 34 schools that serve more than 33,000 students in the community. Corona has 14 private schools—Montessori schools, alternative education, and religious.

The GRRSP Planning Area is located within the CNUSD, and the nearest existing school, Prado View Elementary School, is located approximately 1.5 miles to the east of the site.

Recreation
Please see Section 4.16 Recreation, for a thorough discussion of the Modified Project’s impacts associated with parks.

Other Public Facilities
The Corona Public Library (CPL) is located at 605 South Main Street, and is a 62,000-squarefoot facility. The CPL serves the City of Corona and circulates over 500,000 items each year.

The CPL’s services have expanded to include U.S. Passport Services, notary, online tutoring, test proctoring, small business consulting, and Fair Housing assistance. The CPL hosted more than 629 programs, tours and class visits with 23,522 attendees and contains the W.D. Addison Heritage Room which covers all periods of time, and includes photographs, rare books, newspapers, citrus labels, manuscripts, oral histories, artefacts, and other items available for the public to view.

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4.15.4 EXISTING REGULATIONS, PLANS, PROGRAMS, AND POLICIES

INTERNATIONAL REGULATIONS
International Fire Code
The International Fire Code (IFC) is a model code for regulating minimum fire-safety requirements for new and existing buildings, facilities, storage, and processes. The IFC includes general and specialized technical fire and life-safety regulations, with topics addressing fire-department access, fire hydrants, automatic sprinkler systems, fire alarm systems, fire and explosion hazards safety, use and storage of hazardous materials, protection of emergency responders, industrial processes, and various other topics. The IFC is issued by the International Code Council, which is an international organization of building officials.

FEDERAL REGULATIONS
There are no federal regulations that apply to the Modified Project.

STATE REGULATIONS
California Fire Code
The California Fire Code (CFC; California Code of Regulations, Title 24, Part 9) is based on the 2015 IFC and includes amendments from the State of California fully integrated into the code. The California Fire Code contains fire safety-related building standards that are referenced in other parts of Title 24 of the California Code of Regulations. The CFC is updated once every three years. The 2019 CFC will go into effect on January 1, 2020.

California Health and Safety Code
Sections 13000 et seq. of the California Health and Safety Code include fire regulations for building standards (also in the California Building Code), fire protection and notification systems, fire protection devices such as extinguishers and smoke alarms, high-rise building and childcare facility standards, and fire suppression training.

REGIONAL REGULATIONS
CAL FIRE, County of Riverside Unit Strategic Plan
The California Strategic Plan is implemented through individual “unit plans” that are prepared for different regions of the state. CAL FIRE has adopted a Riverside Unit Fire Plan that covers Riverside County which sets forth the agency’s priorities for prevention, protection, and suppression of wildfires. The overall goal of the Riverside County Unit Fire Plan is to reduce total costs and losses from wildland fire in the unit by protecting assets at risk through focused pre-fire management prescriptions increasing initial attack success.

Riverside County Local Agency Formation Commission

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Municipal Service reviews were added to the Local Agency Formation Commission’s (LAFCO) mandate with the passage of the Cortese-Knox-Hertzberg Local Government Reorganization Act of 2000. A service review is a comprehensive study designed to better inform LAFCO, local agencies, and the community about the provision of municipal services.

Service reviews attempt to capture and analyze information about the governance structures and efficiencies of service providers and to identify opportunities for greater coordination and cooperation between providers. The service review is a prerequisite to a Sphere of Influence update and may also lead a LAFCO to take other actions under its authority.

LOCAL REGULATIONS
Corona Standards of Coverage Study and Fire Strategic Plan The Corona Fire Department sets its vision, mission, business operations, and guiding principles by means of a strategic plan so that the members of the organization can envision its future and develop the necessary procedures and operations to achieve that future. The strategic plan assists the department in preparing annual fiscal year budgets, master plans, and other required, related activities. Although the planning period is eight years, the plan is assessed annually to update service levels, performance, and other needed functions that may change during the course of a year.

Corona Local Hazard Mitigation Plan
The City of Corona has prepared a local hazard mitigation plan (LHMP) to identify the City’s hazards, review and assess past disasters, estimate the probability of future events, and set goals to reduce or eliminate longterm risks to people and property from natural and humanmade hazards. Of the 23 hazards evaluated, earthquakes were rated the highest risk, and wildfires were rated the second highest. The LHMP has goals and mitigation programs to address each of the 23 hazards.

Corona Emergency Operations Plan
The City of Corona has prepared an Emergency Operations Plan (EOP) to address the City’s planned response to natural disasters, technological incidents, and national security emergencies. The EOP does not address normal day-to-day emergencies or the wellestablished and routine procedures used in coping with such emergencies. The EOP’s operational concepts focus on potential large-scale disasters that can generate unique situations requiring unusual emergency responses. The EOP’s emergency management goals are:

1. Provide effective life safety measures and reduce property losses.

2. Provide for the rapid resumption of impacted businesses and community services.

3. Provide accurate documentation and records required for cost recovery efforts.

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City of Corona Municipal Code
Fire Code
As identified in Section 15.12.020 of Chapter 15.12, Fire Code, of the Corona Municipal Code, the CFC and portions of the 2015 IFC have been adopted as the City of Corona Fire Code.

Fire Facilities Fees
Chapter 16.23 of the CMC establishes development impact fees for new developments located citywide or within the Temescal Canyon Area Plan.

Chapter 3.36 of the CMC, Fire Facilities Fee, establishes a fire facilities fee to fund the provision of fire provision services to property located within the urban/wildland interface (i.e., the Cleveland National Forest). This chapter also establishes a method of financing fire facilities required to serve properties within this special high fire area.

Chapter 16.22 of the CMC, Temescal Canyon Public Safety Fee, establishes a fee to offset the increased costs for police and fire protection services and facilities in the Temescal Canyon area.
• CMC Section 16.22.000, Temescal Canyon Public Safety Facility – Findings, states that the City Council finds that the development of residential, commercial, and industrial property in the Temescal Canyon area will create an increase in calls for police and fire protection services which will result in new equipment and facilities to house additional police and fire personnel and equipment to maintain current levels of service and response times within the Temescal Canyon Area. • CMC Section 16.22.005, Temescal Canyon Area Radio Communications Tower – Findings, states that the development of residential, commercial, and industrial property in the Temescal Canyon area will create an increase in calls for police and fire protection services, thus resulting in new equipment and facilities to upgrade emergency communications for police and fire services and related equipment needed to maintain current levels of service and response times within the Temescal Canyon area of the City. This section establishes the Temescal Canyon Area Radio Communications Tower and Facilities Fee to fund the acquisition and construction costs of the Temescal Canyon Area Radio Communications Tower, and funding to maintain police and fire protection services to the Temescal Canyon area. • CMC Section 16.23.040, Fire Facilities, Vehicles, and Equipment – Findings, sets the fees for development in the Temescal Canyon area that must be paid to accommodate for the increase in calls for fire protection services and new equipment and facilities.

The Community Facilities District No. 2016-1 (Public Services) (CFD No. 2016-1) is a citywide assessment district subject to certain zones. CFD 2016-1 was formed in 2016 to assist in the financing of the annual costs of providing police, fire protection, and paramedic services.

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New residential development is required to annex into CFD 2016-1 to assist in the on-going funding of these public services due to the demand placed by development.

City of Corona 2020–2040 General Plan
Land Use Element
Policy LU-1.4 Accommodate the types, densities, and mix of land uses that can be adequately supported by transportation and utility infrastructure (water, sewer, etc.) and public services (schools, parks, libraries, etc.)
Policy LU-4.5 Manage the timing of development and allow development to occur only when public infrastructure and services needed to support that development are available, will be provided concurrently, or are committed to be provided within a reasonable time frame.

Policy LU-9.10 Require that new residential development pay its fair share of the cost of capital improvements, public facilities, and services needed to serve that development.

Ensure that funding mechanisms for landscape maintenance and improvement are required for each.

Policy LU-22.3 Require that existing and proposed development within proposed annexation areas generate sufficient tax or other revenue base to compensate for their fair share of community services that are provided by the City of Corona.

Policy LU-22.4 Require that infrastructure and service improvements for proposed annexation areas do not create an undue burden on existing City of Corona infrastructure and services.

Policy LU-22.5 Encourage that, if an area annexes to the City of Corona, a community facilities district or similar financing district shall be established to fund the provision and maintenance of sewers, streets, and other public improvements and services.

Policy LU-22.10 Collaborate with local, county, and regional governmental agencies to provide water, sewer, public safety, fire response, and other appropriate municipal services; coordinate emergency response services through mutual and automatic aid agreements.

Housing Element
Policy H-1.2 Promote specific plans that provide a variety of housing types and densities based on the suitability of the land, including the availability of infrastructure, the provision of adequate City services and recognition of environmental constraints.

Policy H-3.3 Provide public services and improvements that enhance and create neighborhood stability.

Public Safety Element
Policy PS-7.1 Require larger developments to incorporate site design features that help ensure maximum visibility and security for entrances, pathways, streets and sidewalks, corridors, public and private open space, and parking lots and structures.

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Policy PS-7.2 Require the incorporation of appropriate lighting that provides adequate exterior illumination around commercial, business park, public spaces, parking lots, and multifamily structures.

Policy PS-7.3 Work with traffic engineers to develop methods through design, enforcement, and engineering to reduce the volume and severity of vehicle, pedestrian, and bicycling accidents citywide and around sensitive land uses such as schools, apartments, and other highly traveled uses.

Policy PS-7.4 Enhance public awareness and participation in crime prevention by encouraging changes to be made through crime prevention by design (vegetation selection and maintenance, motion sensors, lighting, etc.) and establishing and participating with police in neighborhood safety and crime prevention programs (e.g. neighborhood watch).

Policy PS-7.5 Require large-scale retail developments to incorporate video surveillance security systems within their facilities and grounds to monitor open public spaces and, where appropriate and feasible, provide office space for police facilities.

Policy PS-7.6 Provide opportunities for police department review and input regarding appropriate methods to mitigate the impacts of land use permits that have functions and characteristics that may impose a higher than normal level of security and police protection.

Policy PS-7.7 Provide appropriate security measures around sensitive essential public facilities, such as water, reclaimed water, radio towers, and other facilities required for use for public health and safety purposes.

Policy PS-8.7 Adhere to and periodically update fire department strategic plans, policies and procedures, and other internal standards to continuously meet service level requirements and priorities, including department response times.

Policy PS-8.8 Ensure that revenues are collected from new development, existing developments, and other land uses in an amount that is commensurate with their respective impact on overall city fire operations.

Policy PS-9.3 Ensure that roadway, bridge and driveway standards are adequate and appropriately maintained to allow safe access to premises where emergencies take place and safe evacuations wherever needed.

Policy PS-9.4 Maintain safe and accessible evacuation routes throughout the community; take precautions and ensure backup or mitigations for routes crossing high hazard areas (e.g., flood, seismic, high fire, etc.).

Policy PS-10.1 Locate, when feasible, new essential public facilities outside of high fire risk areas; if not feasible, require construction and other methods to harden and minimize damage for existing/planned facilities in such areas.

Policy PS-10.2 Require all improved and new homes, structures, and facilities in the very high fire hazard severity zones to adhere to additional fire safe design standards consistent with state law and local practice.

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Policy PS-10.3 Require all improved and new developments to be thoroughly reviewed for their impact on safety and the provision of fire protection services as part of the development review process.

Policy PS-10.4 Require new and rehabilitated homes and structures to meet or exceed City fire prevention standards and state law, including building access, construction design, sprinklers, and others as required by Corona Fire.

Policy PS-10.5 Require all new commercial, industrial, institutional, multiple-unit housing, mixed-use, and one- and two-family dwelling developments to install fire protection systems and encourage the use of automatic sprinkler systems where not required by local codes and ordinances.

Policy PS-10.6 Require fuel modification plans and vegetation clearance standards for development in VHFHSZs to protect structures from wildfire, protect wildlands from structure fires, and provide safe access routes for the community and firefighters.

Policy PS-10.7 Condition approval of parcel maps and tentative maps in VHFHSZs based on meeting or exceeding the SRA Fire Safe Regulations and the fire hazard reduction around buildings and structures regulations.

Policy PS-10.8 Coordinate with the Department of Water and Power to ensure that adequate water supply and flows are available for firefighting; where inadequate, ensure provision of off-site water supply and transport.

Policy PS-10.9 Continue to require visible premise identification and signage per Corona’s Premise Identification Guideline that meet or exceed SRA and CFC requirements.

Emergency Management
Policy PS-11.1 Adhere to the Standard Emergency Management System (SEMS) and the National Incident Management System (NIMS) to coordinate effective response to emergencies and disasters.

Policy PS-11.2 Maintain emergency and hazard mitigation plans; update and define roles of city departments and other partnering agencies in the event of an emergency or disaster, ensuring interagency coordination and collaboration with the Operational Area (SEMS).

Policy PS-11.4 Maintain Structure Protection Plans and other pre-planning activities and plans to remain prepared for emergencies throughout the community.

Policy PS-11.5 Ensure that the Emergency Operations Plan and Standard Operating Procedures provide for efficient and orderly notification and evacuation on a citywide basis.

Ensure they address accessibility issues and mass notification capabilities utilizing our city, county, state, and federal communication systems.

Policy PS-11.9 Ensure all local, state, and federal mandates are adhered to should the City proclaim a local emergency and request any state and/or federal funding.

Policy PS-10.11 Ensure all local, state, and federal mandates are adhered to should the City proclaim a local emergency and request any state and/or federal funding.

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Healthy Community
Policy HC-1.5 Consider the potential impacts of decisions related to land use, food access, active living, safe and sanitary housing, public facilities and services, and other factors that may affect the health of Corona.

Policy HC-5.2 Assess the development impact fees required for new developments as necessary to ensure that appropriate levels of public facilities, services, and amenities are provided and that the demand from such development does not detract from current areas.

4.15.5 PROJECT DESIGN FEATURES
No Project Design Features are proposed for the Modified Project.

4.15.6 THRESHOLDS OF SIGNIFICANCE
Based on the relevant CEQA Guidelines as currently implemented by the City of Corona, significant public services impacts would occur if the proposed Project or any Project-related component would:

Threshold PUB-1 a) Result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services:
i) Fire Protection?
Threshold PUB-2 ii) Police Protection
Threshold PUB-3 iii) Schools
Threshold PUB-4 iv) Parks
Threshold PUB-5 v) Other Public Facilities

METHODOLOGY
The following discussion analyzes potential impacts to public services based on the specific service ratios, response times, or infrastructure requirements of each public service.

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4.15.7 ENVIRONMENTAL IMPACTS ASSOCIATED WITH THE MODIFIED

PROJECT
Impacts
Would the
Modified Project
result in new or
more severe
impacts
requiring
revisions to the
Prior EIR?
Would the
Modified Project
be implemented
under changed
circumstances
resulting in new
or more severe
impacts
requiring
revisions to the
Prior EIR?
Is there new
information that
would result in
new or more
severe impacts
from the
Modified Project
requiring
revisions to the
Prior EIR?
Would the
Modified Project
result in
eliminated,
reduced, or no
changes to
impacts and no
changes to the
Prior EIR are
required?
Would the project:

PUB-1 a) Result in substantial
adverse physical impacts
associated with the
provision of new or
physically altered
governmental facilities,
need for new or
physically altered
governmental facilities,
the construction of which
could cause significant
environmental impacts, in
order to maintain
acceptable service ratios,
response times, or other
performance objectives
for any of the public
services:
i) Fire Protection?
PUB-2 ii) Police Protection?
PUB-3 iii) Schools?
PUB-4 iv) Parks?
PUB-5 iv) Other Public Facilities?

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IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT
IMPACT PUB-1 a) Result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services:
i) Fire Protection?
Eliminated, Reduced, or No Changes to Impacts and No Changes to the Prior EIR are Required.

The Modified Project would result in up to 32 Estate Residential (ER) residences directly adding to the City’s population. In addition, the Modified Project would potentially add to the population indirectly with development of the 746,167 square feet (sf) Business Park Industrial (BPI) Development and 19,600 sf of general commercial (GC) uses. As discussed in Section

4.14, Population and Housing, the 32 ER homes would accommodate approximately 113 residents (32 dwellings x 3.52 persons/household based on the data presented in Table 4.14- 1), the 746,167 sf BPI Development would produce approximately 995 employees (746,167 sf x one employee per 750 of building area), and the 19,600 sf of GC use would produce approximately 130 employees (19,600 sf x one employee per 750 of building area). When combined, the BPI and GC uses would generate 1,125 total employees. Even if 25% of the employees and their households were to move to the City, the resulting growth in population would be approximately 1,104 people (113 ER residents + 991 BPI/GC residents (1,125 emps x 3.52 residents/household x 0.25). Compared to the City’s 2024 estimated population from DOF of 156,615, the additional 1,104 residents would represent a less than one-tenth of one percent increase in population. As determined in Section, 4.14, Population and housing, this increase would not be considered substantial population growth and would not induce substantial unplanned population.

The City’s General Plan EIR determined future facilities and infrastructure could be required to accommodate General Plan build-out. However, as discussed previously under Section 4.14, Population and Housing, Project buildout would generate a similar number of residents and would likely attract existing residents from the City. Moreover, future single-family homes of the Modified Project would be constructed within the smaller PA 5 footprint of 20.39 acres which is 77.81 acres smaller than the Approved Project’s PA 6 of 98.2 acres. Therefore, the Modified Project’s homes would be constructed in a more accessible configuration when compared to the Approved Project.