Corona City Council
August 6, 2025

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.4-5 Biological Resources

SUMMARY OF FINDINGS FOR BIOLOGICAL RESOURCES
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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August 2023 2.4-6 Biological Resources
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MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.5-1 Cultural Resources

2.5 Cultural Resources
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Cause a substantial adverse change in the significance of a historical resource pursuant to Section 15064.5?
b. Cause a substantial adverse change in the significance of an archaeological resource pursuant to Section
15064.5?
c. Disturb any human remains, including those interred
outside of dedicated cemeteries?

ENVIRONMENTAL ANALYSIS
a) Cause a substantial adverse change in the significance of a historical resource pursuant to Section 15064.5?
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND determined the project site is not known to contain any historical resources. However, because cultural resources are known to occur in the project area, there is the potential that unknown cultural resources could exist and be encountered during construction. To avoid impacts to unknown cultural resources, Mitigation Measures CR-16, CR-17, and CR-18, described below, were recommended. With implementation of Mitigation Measures CR-16, CR-17, and CR-18, potential impacts were determined to be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential to cause a substantial adverse change in the significance of a historical resource pursuant to CEQA Guidelines Section 15064.5. The areas where the Proposed Project Modifications would be implemented have been rough graded and no historic resources were encountered. It would be highly unlikely that implementation of the Proposed Project Modifications would encounter unknown historic resources. However, on the side of caution and in the remote event unknown historic resources are encountered, Mitigation Measures CR-16, CR-17, and CR-18 are recommended. With implementation of Mitigation Measures CR-16, CR-17, and CR-18, potential impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to unknown historical resources.

Mitigation Measures:

CR-16: The landowner shall relinquish ownership of all cultural resources, including sacred items, burial goods and all archaeological artifacts that are found on the project area to the appropriate Tribe for proper treatment and disposition.

CR-17: All sacred sites, should they be encountered within the project area, shall be avoided and preserved as the preferred mitigation, if feasible.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.5-2 Cultural Resources
CR-18: If inadvertent discoveries of subsurface archaeological/cultural resources are discovered during grading, the Developer shall retain a qualified archaeologist to assess the significance of such resources. Pursuant to California Public Resources Code Section 21083.2(b) avoidance is the preferred method of preservation for archaeological resources. The archaeologist shall be responsible for determining the significance of the cultural resource and mitigation for such resources. The archaeologist shall make the determination based on the provisions of the California Environmental Quality Act with respect to archaeological resources and shall take into account the religious beliefs, customs, and practices of the Tribe(s). If large fossil specimens are encountered during additional grading, the applicant shall immediately cease operation and retain a qualified and trained paleontologist.
b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to Section 15064.5?
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND determined the project site is not known to contain any known archaeological resources. However, because cultural resources are known to occur in the project area, there is some potential that unknown cultural resources could exist and be encountered during construction. To avoid impacts to unknown archaeological resources, Mitigation Measures 16, 17 and 18 are recommended. With implementation Mitigation Measures CR-16, CR-17, and CR-18, potential impacts would be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential to cause a substantial adverse change in the significance of an archaeological resource pursuant to CEQA Guidelines Section 15064.5. As identified previously, no archaeological resources were encountered during rough grading activities on the project site, including the areas where the Proposed Project Modifications would be implemented. It would be highly unlikely that implementation of the Proposed Project Modifications would encounter unknown archaeological resources. However, on the side of caution and in the remote event unknown archaeological resources are encountered, Mitigation Measures CR-16, CR-17, and CR-18 are recommended. With implementation of Mitigation Measures CR-16, CR-17, and CR-18, potential impacts to unknown archaeological resources would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to unknown archaeological resources.

Mitigation Measures: Mitigation Measures CR-16, CR-17 and CR-18 are required. c) Disturb any human remains, including those interred outside of dedicated cemeteries? Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND determined the project site did not contain any sacred burial grounds or formal cemeteries. However, because cultural resources are known to occur in the project area, there could be the potential that unknown burial grounds could exist and be encountered during construction. To avoid potential impacts to unknown burial grounds that could exist within the project site, Mitigation Measure CR-15 was required. With implementation of Mitigation Measure CR-15, potential impacts were determined to be less than significant.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.5-3 Cultural Resources
Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential to disturb any human remains, including those interred outside of dedicated cemeteries. During rough grading of the project site including the areas where the Proposed Project Modifications would be implemented, no human remains or burial grounds were encountered. It would be highly unlikely that implementation of the Proposed Project Modifications would encounter human remains. However, on the side of caution and in the remote event unknown human remains are encountered, Mitigation Measures CR-15 is recommended. With implementation of Mitigation Measure CR-15, potential impacts to unknown human remains would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to unknown human remains and burial grounds.

Mitigation Measure
CR-15: If human remains are encountered, California Health and Safety Code Section 7050.5 states that no further disturbance shall occur until the Riverside County Coroner has made the necessary findings as to origin. Further, pursuant to California Public Resources Code Section 5097.98(b) remains shall be left in place and free from disturbance until a final decision as to the treatment and disposition has been made. If the Riverside County Coroner determines the remains to be Native American, the Native American Heritage Commission must be contacted within 24 hours. The Native American Heritage Commission must then immediately identify the “most likely descendant(s)” of receiving notification of discovery. The most likely descendant(s) shall then make recommendations within 48 hours and engage in consultations concerning the treatment of the remains as provided in Public Resources Code 5097.98.

SUMMARY OF FINDINGS FOR CULTURAL RESOURCES
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.5-4 Cultural Resources
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MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.6-1 Energy

2.6 Energy
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary
consumption of energy resources, during project
construction or operation?
b. Conflict with or obstruct a state or local plan for
renewable energy or energy efficiency?

ENVIRONMENTAL ANALYSIS
a) Result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation?
Previously Approved MND Finding: The 2019 amendments and additions to the CEQA Checklist includes an Energy Section that analyzes the Proposed Project Modifications energy consumption in order to avoid or reduce inefficient, wasteful, or unnecessary consumption of energy. The previously approved IS/MND was prepared before 2019 and did not evaluate the consumption of energy.

Addendum Finding Less Than Significant Impact: Implementation of the Proposed Project Modifications would not result in a potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources during project construction or operation.

The construction and operation of the project would require the commitment of energy resources.

The project site has been previously graded including the area where the Proposed Project Modifications would be implemented. Therefore, no additional energy commitments associated with rough grading would be required. Any final grading for the Proposed Project Modifications would have been included in the overall energy commitments for the project. The Proposed Project Modifications would not increase the number of approved residential units on the project site. Therefore, there would be no additional operation energy commitments associated with implementation of the Proposed Project Modifications. Potential impacts associated with the project resulting in wasteful, inefficient, or unnecessary consumption of energy resources would be less than significant. b) Conflict with or obstruct a state or local plan for renewable energy or energy efficiency? Previously Approved MND Finding: The 2019 amendments and additions to the CEQA Checklist includes an Energy Section that analyzes if a project would conflict with or obstruct a state or local plan for renewable energy or energy efficiency. The previously approved IS/MND did not evaluate local plans for renewable energy or energy efficiency.

Addendum Finding Less Than Significant Impact: The City of Corona Climate Action Plan Update, adopted in 2019, contains applicable goals and policies related to energy. The goals and policies that are appliable to the project with the Proposed Project Modifications are shown in Table 2.6-1,

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.6-2 Energy
Proposed Project Compliance with Applicable Climate Action Plan Update Energy Policies, along with the project’s consistency.

Table 2.6-1
Proposed Project Compliance with Applicable Climate Action Plan Update Energy Policies General Plan Goal or Policy Proposed Project Implementation Actions Goal 1: Increase Energy Efficiency in Existing Residential Units.

Consistent. During construction, water and energy
conservation measures would be implemented in
accordance Title 24 Energy Efficiency Standards.

Goal 2: Increase Energy Efficiency in New Residential
Units.

Consistent. During construction, water and energy
conservation measures would be implemented in
accordance Title 24 Energy Efficiency Standards.

Goal 5: Increase Energy Efficiency through Water
Efficiency.

Consistent. During construction, water and energy
conservation measures would be implemented in
accordance Title 24 Energy Efficiency Standards.

Goal 6: Decrease Energy Demand through Reducing
Urban Heat Island Effect per Title 24 Requirements.

Consistent. During construction, water and energy
conservation measures would be implemented in
accordance Title 24 Energy Efficiency Standards.

Source: VCS Environmental; March 23, 2021.

As shown in Table 2.6-1, the project with the Proposed Project Modifications would be consistent with all applicable energy-related policies from the City of Corona General Plan. Therefore, the Proposed Project Modifications would not conflict with or obstruct a state or local plan for renewable energy or energy efficiency. Impacts would be less than significant.

SUMMARY OF FINDINGS FOR ENERGY
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects.
• No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts.
• No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.7-1 Geology and Soils

2.7 Geology and Soils
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Directly or indirectly cause potential substantial
adverse effects, including the risk of loss, injury, or death involving:

1) Rupture of a known earthquake fault, as
delineated on the most recent Alquist-Priolo
Earthquake Fault Zoning Map issued by the
State Geologist for the area or based on other
substantial evidence of a known fault? Refer to
Division of Mines and Geology Special
Publication 42.
2) Strong seismic ground shaking?
3) Seismic-related ground failure, including
liquefaction?
4) Landslides?
b. Result in substantial soil erosion or the loss of topsoil? c. Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the
project, and potentially result in on-or off-site
landslide, lateral spreading, subsidence, liquefaction
or collapse?
d. Be located on expansive soil, as defined in Table 18-1- B of the Uniform Building Code (1994), creating
substantial direct or indirect risks to life or property? e. Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal
systems where sewers are not available for the
disposal of waste water?
f. Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?

ENVIRONMENTAL ANALYSIS
a) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving:
1) Rupture of a known earthquake fault, as delineated on the most recent AlquistPriolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.7-2 Geology and Soils
Previously Approved MND Finding No Impact: The previously approved IS/MND determined that there were no Alquist-Priolo Fault Zones on the project site and there would be minimal potential for ground rupture impacts.

Addendum Finding No Impact: The Proposed Project Modifications would not increase the potential for the rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map. The Proposed Project Modifications would occur on the same project site and like the original project, there would be minimal potential for ground rupture impacts. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of ground rupture impacts. 2) Strong seismic ground shaking?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the project site is located within a seismically active area that could be subject to seismic ground shaking impacts. The previously approved project determined that with compliance with the California Building Code, the potential for strong seismic shaking impacts would be less than significant.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase potential seismic shaking impacts. The Proposed Project Modifications would be implemented within the same project site and would be subject to the same level of risks for potential seismic shaking impacts. However, because the Proposed Project Modifications do not involve the construction of a recreation center structure, there would be less risks for potential seismic shaking that could adversely impact property or people.

Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in a lower level of seismic shaking risk impacts.
3) Seismic-related ground failure, including liquefaction? Previously Approved MND Finding Less Than Significant Impact: Geotechnical studies prepared for the project site identified groundwater levels within the project area are 100 feet or more below ground surface and there would be low potential for liquefaction impacts. The previously approved IS/MND determined that potential liquefaction impacts would be less than significant.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential for liquefaction impacts. The Proposed Project Modifications would be implemented on the same project site and would be subject to the same low-level risk for potential liquefaction impacts. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of liquefaction impacts.
4) Landslides?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined that the potential for landslide impacts would be less than significant.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential for landslide impacts. The areas where the Proposed Project

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.7-3 Geology and Soils
Modifications would be implemented are relatively flat. The potential for landslide impacts would be low and the implementation of the Proposed Project Modifications would not create any potential landslide hazards. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of landslide impacts. b) Result in substantial soil erosion or the loss of topsoil? Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the construction activities for the project would uncover soils and increase the potential for soil erosion impacts. The previously adopted IS/MND identified the project would be required to comply with the City of Corona grading regulations which would require measures to control erosion.

With compliance with grading regulations, potential erosion impacts were determined to be less than significant.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential for erosion impacts. Earthwork activities associated with implementation of the Proposed Project Modifications would be required to comply with the City of Corona grading regulations which would require measures to control erosion. Compliance with grading regulations, potential erosion impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of potential erosion impacts.
c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on-or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse?
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND and geotechnical report prepared for the original project determined the project was geotechnically feasible with the incorporation of geotechnical design recommendations. To ensure the geotechnical design recommendations were implemented, Mitigation Measure GEO-2 was required. With implementation of Mitigation Measure GEO-2, potential impacts associated with being located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, would be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase potential impacts associated with being located on a geologic unit or soil that is unstable, or that would become unstable, as a result of the project. Any earthwork activities associated with implementation of the Proposed Project Modifications would be required to comply with geotechnical design recommendations provided in the project geotechnical report. With implementation of Mitigation Measure GEO-2, potential impacts associated with being located on a geologic unit or soil that is unstable, or that would become unstable as a result of the Proposed Project Modifications, would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of geologic stability impacts.

Mitigation Measures:

GEO-2: During earthwork construction, the applicant shall adhere to the grading recommendations presented in the Preliminary Geotechnical Investigation prepared by Geocon Inland Empire Inc. (2006).

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.7-4 Geology and Soils
d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial direct or indirect risks to life or property? Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously adopted IS/MND and supporting project geotechnical report determined the project was geotechnically feasible with the incorporation of geotechnical design recommendations presented in the report. With implementation of Mitigation Measure GEO-2, potential expansive soil impacts were determined to be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential for adverse soil expansive impacts. Any earthwork activities associated with implementation of the Proposed Project Modifications would be required to comply with geotechnical design recommendations provided in the project geotechnical report. With implementation of Mitigation Measure GEO-2, potential expansive soil impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of expansive soil impacts.

Mitigation Measures: Mitigation Measure GEO-2 is required. e) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater?
Previously Approved MND Finding No Impact: The previously adopted IS/MND identified the project would not include the use of septic tanks or alternative waste disposal systems.

Addendum Finding No Impact: Similar to the original project, the Proposed Project Modifications do not include the use of septic tanks or alternative waste disposal systems. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts.
f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND determined there would be low potential for the discovery of known paleontological resources. To avoid impacts to unknown paleontological resources that might be present, the previously approved IS/MND identifies Mitigation Measures GEO-19, GEO-20, and GEO21 which establishes requirements for the collection and salvaging of paleontological resources in the event unknown paleontological resources are encountered. With implementation of Mitigation Measures GEO-19, GEO-20, and GEO-21, potential impacts to paleontological resources were determined to be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential to directly, or indirectly, destroy a unique paleontological resource or a site or a unique geologic feature. No paleontological resources were encountered during the rough grading activities on the project site including the areas where the Proposed Project Modifications would be implemented. It would be highly unlikely the implementation of the Proposed Project Modifications would encounter unknown paleontological resources. However, on the side of caution and in the remote event unknown paleontological resources are encountered,

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.7-5 Geology and Soils
Mitigation Measures GEO-19, GEO-20, and GEO-21 are recommended. With implementation of Mitigation Measures GEO-19, GEO-20, and GEO-21, potential impacts to unknown paleontological resources would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to unknown paleontological resources.

Mitigation Measures:

GEO-19: The paleontologist shall salvage all fossils in the area and provide additional field staff in accordance with modern paleontological techniques.

GEO-20: All fossils collected during the project will be prepared to a reasonable point of identification. Excess sediment or matrix will be removed from the specimens to reduce the bulk and cost of storage. Itemized catalogs of all material collected and identified will be provided to the museum repository along with the specimens.

GEO-21: A report prepared by the archaeologist documenting the results of the monitoring and salvage activities and the significance of the fossils shall be prepared.

SUMMARY OF FINDINGS FOR GEOLOGY AND SOILS
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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August 2023 2.7-6 Geology and Soils
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Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.8-1 Greenhouse Gas Emissions

2.8 Greenhouse Gas Emissions
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the
environment?
b. Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of
greenhouse gases?

ENVIRONMENTAL ANALYSIS
a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment?
Previously Approved MND Finding Less Than Significant Impact: The previously adopted IS/MND estimated the construction of the project would generate 438 annual metric tons of greenhouse gas emissions and the operation of the project would generate 1,955 annual metric tons of greenhouse gas emissions. The construction and operation of the project would not exceed the City’s threshold of 3,000 annual metric tons and less than significant greenhouse gas emission impacts would occur.

Addendum Finding Less Than Significant Impact: Implementation of the Proposed Project Modifications would not generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment. The Proposed Project Modifications would not increase the number of dwelling units or increase the amount of vehicle trips beyond the amount provided in the previously approved project. Therefore, there would be no increase in long-term greenhouse gas emissions compared to the original project. Additionally, the overall grading for the project included the area where the open space park area would be located. Therefore, compared to the previously approved project, there would be no increase in construction related greenhouse gas emissions.

Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of greenhouse gas emission impacts. b) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases?
Previously Approved MND Finding Less Than Significant Impact: The previously prepared IS/MND determined the project would not conflict with the City of Corona Climate Action Plan.

Addendum Finding Less Than Significant Impact: Implementation of the Proposed Project Modifications would not conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases. The Proposed Project Modifications would not increase greenhouse gas emissions above the City threshold of 3,000 annual metric tons, and therefore would be consistent with the City of Corona Climate Action Plan. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.8-2 Greenhouse Gas Emissions
impacts regarding potential conflicts with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases.

SUMMARY OF FINDINGS FOR GREENHOUSE GAS EMISSIONS
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.9-1 Hazards and Hazardous Materials

2.9 Hazards and Hazardous Materials
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Create a significant hazard to the public or the
environment through the routine transport, use, or
disposal of hazardous materials?
b. 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?
c. Emit hazardous emissions or handle hazardous or
acutely hazardous materials, substances, or waste
within one-quarter mile of an existing or proposed
school?
d. Be located on a site which is included on a list of
hazardous materials sites compiled pursuant to
Government Code Section 65962.5 and, as a result,
would it create a significant hazard to the public or the environment?
e. 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?
f. Impair implementation of or physically interfere with an adopted emergency response plan or emergency
evacuation plan?
g. Expose people or structures, either directly or
indirectly, to a significant risk of loss, injury or death involving wildland fires?

ENVIRONMENTAL ANALYSIS
a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the project would result in less than significant impacts regarding the transport, use and disposal of hazardous materials.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential for significant impacts regarding the transport, use and disposal of hazardous materials. The construction operations associated with the Proposed Project Modifications could involve the handling of incidental amounts of hazardous substances, such as fuels and oil. Additionally,

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.9-2 Hazards and Hazardous Materials
long-term maintenance activities of the open space could involve the use of pesticides. To avoid public exposure to hazardous materials, implementation of the Proposed Project Modifications would be required to comply with local, state, and federal laws and regulations regarding the handling and storage of hazardous materials. Compliance with local, state, and federal laws and regulations would reduce the potential impact of creating a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials to less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts in regard to the potential to create a hazard to the public or environment associated with the transport, use and disposal of hazardous materials. b) 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?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the project would result in less than significant impacts in regard to accidental release of hazardous materials into the environment.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential for the release of hazardous materials into the environment. Construction operations associated with the Proposed Project Modifications would involve the handling of incidental amounts of hazardous materials, such as fuels, oils, and solvents. To minimize the inadvertent release of hazardous materials into the environment, the Proposed Project Modifications would be required to comply with local, state, and federal laws and regulations and implement Best Management Practices. Compliance with local, state, and federal laws and regulations in conjunction with implementation of Best Management Practices would reduce the potential impact for inadvertent release of hazardous materials into the environment to less than significant. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts associated with the accidental release of hazardous materials into the environment. c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? Previously Approved MND Finding No Impact: The closest school near the project location is El Centro Middle School, approximately 1.60 miles from the site. The previously approved IS/MND determined the original project would not emit hazardous emissions within 0.25 miles of an existing or proposed school.

Addendum Finding No Impact: The Proposed Project Modifications would not increase the potential hazard emission impacts within 0.25 miles of a school site. The Proposed Project Modifications would occur in the same general area approximately 1.6 miles from the school site. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts associated with hazardous emissions within 0.25 miles of a school site. d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined that the original project site was not included on a list of hazardous material sites.

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Addendum Finding No Impact: The Proposed Project Modifications would not occur on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5. The Proposed Project Modifications would occur in the same general area and would not be included on a list of hazardous material sites. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impact. e) 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?
Previously Approved MND Finding No Impact: The closest airport to the project site would be the Riverside Municipal Airport, which is located approximately 8.3 miles to the northeast. The project site is not within an Airport Influence Area.

Addendum Finding No Impact: The Proposed Project Modifications would not increase potential airport related hazards or excessive noise impacts. The Proposed Project Modifications would occur in the same general area and would not be within an Airport Influence Area. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impact.
f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the construction and operation of the original project would not impair the implementation of emergency response plans or evacuation plans.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase impacts associated with conflicts with adopted emergency plans. The Proposed Project Modifications would not increase the population in the City and the number of residents to be potentially evacuated in the event of an emergency. Additionally, the proposed circulation access would allow adequate emergency access. The construction activities for the Proposed Project Modifications would not involve any activities that would physically impair or interfere with emergency response plans for the project site. During construction, there could be the potential for temporary lane closures to allow for utility connections and traffic improvements. The temporary lane closures would be for a short period of time and would not interfere with emergency response plans.

Additionally, the construction activities for the project would be coordinated with the City, which would identify if traffic controls are needed to maintain emergency response plans. With compliance with City traffic control requirements, potential construction impacts with emergency response plans would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impact in regard to potential conflicts with emergency response plans or evacuation plans for the area.

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g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project site was not in a Fire Hazard Area and would not expose people or structures to significant wildland fire risks.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential to expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fire. According to Figure PS-11 of the City of Corona General Plan Safety Element, portions of the project site are adjacent to areas considered High Fire Hazard Area. The Monteolivo Project was initially graded with the approval of the City to provide fuel modification measures on the adjacent, offsite Sherborn Property. The City now requires that all fuel modification programs be conducted onsite. Therefore, the project plans were modified to square off Lots 17-21 to remove the common area behind these homes and incorporate a radiant heat wall behind Lots 16-29. Additionally, the CC&R’s would include a prohibition of the installation of combustible materials in the 30-foot zone width adjacent to the heat wall within Lots 16-29. With implementation of the fuel modification measures, potential impacts exposing people to death or injury or structures to property loss would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of fire hazard impacts.

SUMMARY OF FINDINGS FOR HAZARDS AND HAZARDOUS MATERIALS In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.10 Hydrology and Water Quality
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Violate any water quality standards or waste
discharge requirements or otherwise substantially
degrade surface or ground water quality?
b. Substantially decrease groundwater supplies or
interfere substantially with groundwater recharge
such that the project may impede sustainable
groundwater management of the basin?
c. 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:

1) Result in substantial erosion or siltation on- or
off-site?
2) Substantially increase the rate or amount of
surface runoff in a manner which would result in
flooding on- or off-site?
3) 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?
4) Impede or redirect flood flows?
d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation?
e) Conflict with or obstruct implementation of a water
quality control plan or sustainable groundwater
management plan?

ENVIRONMENTAL ANALYSIS
a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality?
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND determined the project, with implementation of Mitigation Measure BIO-10, would not conflict with the Regional Water Quality Control Board water quality standards.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential to violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality. The Proposed Project Modifications would not increase the amounts of impervious surfaces on the project site or increase rates of surface water runoff that were evaluated for the original project. The project

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would be required to prepare a Storm Water Pollution Prevention Plan (SWPPP) to avoid degraded surface water runoff being conveyed into downstream water bodies. The Proposed Project Modifications would implement Best Management Practices to manage water quality. Additionally, the project has prepared a Water Quality Management Plan which would manage long-term surface water runoff by capturing and infiltrating stormwater runoff. The Proposed Project Modifications includes a bio-treatment basin that would capture and treat stormwater runoff and ensure that longterm operation of storm water impacts would be less than significant. With Implementation of Mitigation Measure BIO-10, short-term construction and long-term water quality impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of water quality impacts.

Mitigation Measures:

BIO-10: A Water Quality Management Plan and SWPPP shall be prepared and implement BMPs (Best Management Practices) that will prevent habitat degradation caused by runoff within the adjacent conservation area and pollutants from vehicles and paved surfaces are organic compounds, metals, and oil/grease; from pet waste are bacteria/virus pathogens; and from landscaping are sediment, nutrients, oxygen-demanding substances, and herbicides/pesticides.
b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would not interfere with groundwater recharge and would have a less than significant impact on groundwater supplies.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential to substantially decrease groundwater supplies or interfere substantially with groundwater recharge. The Proposed Project Modifications would not involve the extraction of groundwater or involve any activities that would interfere with groundwater recharge. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impact to groundwater supplies.
c) 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:
1) Result in substantial erosion or siltation on- or off-site? Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated: The previously approved IS/MND determined with implementation of Mitigation Measure BIO-10, substantial erosion, or siltation onsite or offsite would not result in substantial erosion onsite or offsite.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase potential erosion and siltation impacts onsite or offsite. The Proposed Project Modifications would prepare and implement a Stormwater Pollution Prevention Plan (SWPPP) that would reduce potential erosion impacts.

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With implementation of Mitigation Measure BIO-10, potential erosion and siltation impacts would be reduced to a less than significant level. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of potential erosion and siltation impacts.

Mitigation Measures: Mitigation Measure BIO-10 is required. 2) Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would not increase the risk for flooding.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential to substantially increase the amounts of impervious surfaces and associated rate of surface water runoff that would have the potential to flood onsite or offsite properties. The Proposed Project Modifications would not increase the amounts of impervious surfaces on the project site or increase rates of surface water runoff that could result in onsite or offsite flooding impacts. Potential onsite and offsite flood impacts associated with increased surface water runoff would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of potential surface water runoff flooding impacts. 3) 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?
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated: The previously approved IS/MND determined with implementation of Mitigation Measure BIO-10, the project would not exceed the capacity of existing stormwater drainage systems and would not provide a substantial new source of polluted surface water runoff.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The Proposed Project Modifications would not increase the potential to 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. The Proposed Project Modifications includes the construction of a bio-treatment basin that treats surface water runoff and ensures that the project would not exceed capacity of existing stormwater drainage systems or provide a substantial new source of polluted surface water runoff to downstream receiving water bodies. With implementation of Mitigation Measure BIO-10, potential storm water management and water quality impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would not result in the same level of potential surface water runoff and water quality impacts.

Mitigation Measures: Mitigation Measure BIO-10 is required.

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4) Impede or redirect flood flows?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the project site is not within a flood hazard area and the project would have no impact on the redirection of flood flows.

Addendum Finding No Impact: The Proposed Project Modifications would not increase the potential to impede or redirect flood flows. The Proposed Project Modifications would occur in the same general area and would not be subject to flood hazards and would not involve the construction of any structures that redirected flood flows. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts in regard to redirecting flood flows. d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation?
Previously Approved MND Finding No Impact: The previously prepared IS/MND determined the original project was not located within a flood hazard area, tsunami run up area or seiche zone.

Addendum Finding No Impact: The Proposed Project Modifications would not result in or increase the potential for flood hazard, tsunami, or seiche zones, or risk release of pollutants due to project inundation. The Proposed Project Modifications would occur in the same general area and are not subject to flood hazards, tsunami run up area or seiche zones. Compared to the previously approved IS/MND, implementation of the Proposed Project Modifications would result in the same level of potential flood hazard impacts.
e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan?
Previously Approved MND Finding Less Than Significant Impact: The previously prepared IS/MND determined the original project would not conflict with the Santa Ana Region Water Quality Control Board. The California Sustainable Groundwater Management Act (SGMA) was passed in 2014. The previously adopted IS/MND was prepared before 2014 and did not evaluate consistency with SGMA.

Addendum Finding Less Than Significant Impact: As identified previously, implementation of the Proposed Project Modifications would not result in any conflicts with the Santa Ana Region Water Quality Control Basin Plan water quality standards. Additionally, the Proposed Project Modifications would not involve any activities that would reduce underground water supplies nor have an adverse effect on the sustainability of groundwater supplies. Potential impacts would be less than significant.

Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of potential impacts.

SUMMARY OF FINDINGS FOR HYDROLOGY AND WATER QUALITY
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed.

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• No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.11 Land Use and Planning
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Physically divide 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?

ENVIRONMENTAL ANALYSIS
a) Physically divide an established community?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would not divide an established community and would have less than significant impacts.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential to physically divide an established community. The Proposed Project Modifications would not create a barrier between existing neighborhoods or prevent access to existing neighborhoods that would result in adverse land use compatibility impacts. Additionally, the project would not redirect traffic through existing neighborhoods. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to established communities.
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?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would not conflict with land use planning programs or policies that are relevant to the project site.

Addendum Finding No Impact: The Proposed Project Modifications would not increase the potential to 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. The Proposed Project Modifications do not involve any changes or activities that would conflict with the City of Corona General Plan or other relevant land use planning programs and policies. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to established communities.

SUMMARY OF FINDINGS FOR LAND USE AND PLANNING
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:

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• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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August 2023 2.12-1 Mineral Resources

2.12 Mineral Resources
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Result in the loss of availability of a known mineral resource that would be of 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?

ENVIRONMENTAL ANALYSIS
a) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state?
Previously Approved MND Finding No Impact: The previously adopted IS/MND determined the project site does not contain mineral resources and that implementation of the project would not result in the loss of mineral resources that would have value to the region.

Addendum Finding No Impact: The Proposed Project Modifications would not increase the potential to result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state. The Proposed Project Modifications would occur in the same project area.

Like the original project, implementation of the Proposed Project Modifications would not result in the loss of mineral resources that have value to the region. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to mineral resources of regional value.
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? Previously Approved MND Finding No Impact: The previously approved IS/MND determined the project site does not contain mineral resources and implementation of the project would not result in the loss of mineral resources that have local importance value.

Addendum Finding No Impact: The Proposed Project Modifications would not increase the potential to 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 Proposed Project Modifications would occur in the same project area. Like the original project, implementation of the Proposed Project Modifications would not result in the loss of mineral resources that would have value of local importance. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impact to mineral resources of local importance.

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SUMMARY OF FINDINGS FOR MINERAL RESOURCES
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.13 Noise
Would the project result in:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
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?
b. Generation of excessive groundborne vibration or
groundborne noise levels?
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?

ENVIRONMENTAL ANALYSIS
Background

NOISE LEVELS
Noise level (or volume) is generally measured in decibels (dB) using the A-weighted sound pressure level (dBA). The A-weighted scale is an adjustment to the actual sound pressure levels to be consistent with that of human hearing response, which is most sensitive to frequencies around 4,000 Hertz (about the highest note on a piano) and less sensitive to low frequencies (below 100 Hertz). Sound pressure level is measured on a logarithmic scale with the 0 dB level based on the lowest detectable sound pressure level that people can perceive (an audible sound that is not zero sound pressure level). Based on the logarithmic scale, a doubling of sound energy is equivalent to an increase of three dBA, and a sound that is 10 dBA less than the ambient sound level has no effect on ambient noise. Because of the nature of the human ear, a sound must be about 10 dBA greater than the reference sound to be judged as twice as loud. In general, the healthy human ear is most sensitive to sounds between 1,000 Hz and 5,000 Hz, (A-weighted scale) and it perceives a sound within that range as being more intense than a sound with a higher or lower frequency with the same magnitude. For purposes of this report, as well as with most environmental documents, the A-scale weighting is typically reported in terms of Aweighted decibel (dBA). Typically, the human ear can barely perceive the change in noise level of 3 dB.

A change in 5 dB is readily perceptible, and a change in 10 dB is perceived as being twice or half as loud. As previously discussed, a doubling of sound energy results in a 3 dB increase in sound, which means that a doubling of sound energy (e.g., doubling the volume of traffic on a highway), would result in a barely perceptible change in sound level.

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SOUND ATTENUATION
From the noise source to the receiver, noise changes both in level and frequency spectrum. The most obvious is the decrease in the level of noise as the distance from the source increases. The manner in which the noise level reduces with distance depends on whether the source is a point or line source as well as ground absorption, atmospheric effects and refraction, and shielding by natural and manmade features. Sound from point sources, such as air conditioning condensers, radiate uniformly outward as it travels away from the source in a spherical pattern. The noise drop-off rate associated with this geometric spreading is 6 dBA per each doubling of the distance (dBA/DD) between source and receiver. Transportation noise sources such as roadways are typically analyzed as line sources, since at any given moment the receiver may be impacted by noise from multiple vehicles at various locations along the roadway. Because of the geometry of a line source, the noise drop-off rate associated with the geometric spreading of a line source is 3 dBA/DD.

The sound drop-off rate is highly dependent on the conditions of the land between the noise source and the receiver. To account for this ground-effect attenuation (absorption), two types of site conditions are commonly used in traffic noise models, soft-site and hard-site conditions. Soft-site conditions account for the sound propagation loss over natural surfaces such as normal earth and ground vegetation. For point sources, a drop-off rate of 7.5 dBA/DD is typically observed over soft ground with landscaping, as compared with a 6.0 dBA/DD drop-off rate over hard ground such as asphalt, concrete, stone and very hard packed earth. For line sources a 4.5 dBA/DD is typically observed for soft-site conditions compared to the 3.0 dBA/DD drop-off rate for hard-site conditions. Caltrans research has shown that the use of soft-site conditions is more appropriate for the application of the Federal Highway Administration (FHWA) traffic noise prediction model used in this analysis.

Additionally, noise levels may also be reduced by intervening structures; generally, a single row of buildings between the receptor and the noise source reduces the noise level by about five dBA, while a solid wall or berm reduces noise levels by approximately seven dBA. The manner in which older homes in California were constructed (approximately 30 years old or older) generally provides a reduction of exterior-to-interior noise levels of about 20 to 25 dBA with closed windows. The exteriorto-interior reduction of newer residential units and office buildings constructed to California Energy Code standards is generally 30 dBA or more (Harris, Miller, Miller and Hanson, 2006).

Existing Setting
The project is currently undeveloped and surrounded by residential uses to the west and south. I-15 is located approximately 0.20 miles from the site. Existing traffic noise levels from the existing residential uses are minimal. Additionally, because of intervening topography and structures between the project site and I-15, traffic noise along I-15 is not discernable.

Other sources of noise are offsite from the FST North Plant Aggregate Mining and Vulcan Materials surface mining operations. Both facilities use a combination of heavy equipment, drilling and blasting to fracture rock material. Generally, the material is loaded on trucks and transported to a processing area or by conveyor for rock crushing. The material is crushed, screened, and conveyed to stockpiles.

The materials are further segregated into stockpiles, loaded onto highway trucks to transport to customers. Potential sources of noise affecting the project site would include blasting, operation of heavy construction equipment, rock crushing, and truck hauling of excavated materials. As shown in Figure 2.13-1, Intervening Topographic Feature Photographs, situated between Vulcan Materials surface mining operations and the Monteolivo Community is an existing topographic feature ranging

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in elevation from 82 feet to a high of 97 feet in elevation. Between FST North Plant and Aggregate Mining and the Monteolivo community the existing topographic feature ranges from 236 feet and 350 feet. Topographic features absorb sound waves which reduce noise levels up to 10dB when separated by line of site and a continuous barrier.

Regulatory Framework
A decibel (dB) is a unit of measurement that indicates the relative intensity of a sound. The zero point on the dB scale is based on the lowest sound level that a healthy, unimpaired human ear can detect.

Changes of three dB or fewer are only perceptible in laboratory environments. An increase of 10 dB represents a 10-fold increase in acoustic energy, while 20 dB is 100 times more intense, and 30 dB is 1,000 times more intense. Each 10 dB increase in sound level is perceived as approximately a doubling of loudness.

FEDERAL REGULATIONS-FEDERAL OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION The most relevant federal agency to the Proposed Project Modifications would be the Occupational Safety and Health Administration (OSHA), which limits noise exposure of workers to 90 dB or less over eight hours or 105 dB or less over one hour.

STATE OFFICE OF NOISE CONTROL STANDARDS
The California Office of Noise Control has set long-term land use compatibility noise standards for different types of land uses and has encouraged local jurisdictions to adopt them. According to the State Land Use/Noise Compatibility Guideline, office and manufacturing land uses are compatible in locations with noise levels ranging from 65 dB to 85 dB.

LOCAL NOISE REGULATIONS
City of Corona Exterior Noise Ordinance
The City of Corona Noise Ordinance establishes noise level standards to help minimize the effect of noise on sensitive land uses. Sensitive land uses include single family residential, multiple family residential, churches, hospitals and similar health care institutions, convalescent homes, libraries, and school classroom areas. The Noise Ordinance identifies two separate types of noise sources:
transportation and stationery.

Transportation Noise Sources
Transportation related noise sources include freeways, airports, and railroads. The noise metrics used for this noise type is the Community Noise Equivalent Level (CNEL) which is a 24-hour time weighted average noise level. The noise standard for sensitive land uses from transportation related noise sources is shown in Table 2.13-1, Noise Standards.

Table 2.13-1
Noise Standards
Land Use
Max Exterior
Noise Level
7 AM to 10 PM
Max Exterior
Noise Level
10 PM to 7 AM
Max Interior
Noise Level
7 AM to 10 PM
Max Interior
Noise Level
10 PM to 7 AM
Single-Family Residential 55 dBA 50 dBA 45 dBA 35 dBA
Other Sensitive Land Uses 55 dBA 50 dBA 45 dBA 35 dBA

Location No. 1: View from Sherborn Street in front of FST North Plant Aggregate Mining looking west towards the project site.

Location No. 3: View from Sherborn Street in front of Vulcan Materials looking west towards the project site.

Location No. 2: View from Sherborn Street in front of FST North Plant Aggregate Mining looking southeast.

Location No. 4: View from Sherborn Street in front of Vulcan Materials looking southeast towards the project site.

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Figure 2.13-1
Intervening Topographic Feature Photographs

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Stationary Noise Sources
The other type of noise standard is for stationary noise sources, such as construction noise. The noise metric used for stationary sources is defined as noise levels that cannot be exceeded for certain percentages of time.

Per Section 17.84.040(C)(2)(d) of the City of Corona Municipal Code, Exterior Noise, it is unlawful for any person, entity, or operation at any location within the incorporated area of the City to create any noise, or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such person, which causes the noise level when measured on any other property to exceed:
• The noise standard for a cumulative period of more than 30 minutes in any hour (equivalent to L50).
• The noise standard plus 5 dB for a cumulative period of more than 15 minutes in any hour (L25).
• The noise standard plus 10 dB for a cumulative period of more than five minutes in any hour (L8).
• The noise standard plus 15 dB for a cumulative period of more than one minute in any hour (L2).
• The noise standard plus 20 dB for any period of time (Lmax).

In the event the ambient noise level exceeds any of the first four noise limit categories above, the cumulative period applicable to the category shall be increased to reflect the ambient noise level. In the event the ambient noise level exceeds the fifth noise category, the maximum allowable noise level under said category shall be increased to reflect the maximum ambient noise level.

Interior Noise
It shall be unlawful for any person at any location within the incorporated area of the city to create any noise or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such a person which causes the noise level when measured within any other residential dwelling unit or sensitive land use to exceed:

1. The noise standard for a cumulative period of more than five minutes in any hour;

2. The noise standard plus 5 dB for a cumulative period of more than one minute in any hour; or

3. The noise standard plus 10 dB, or the maximum measured ambient, for any period of time.

City of Corona Exemptions to Noise Ordinance Standards
According to the Noise Ordinance, construction is prohibited between the hours of 8:00 PM to 7:00 AM Monday through Saturday and 6:00 PM to 10:00 AM on Sundays and federal holidays.

City of Corona Vibration Standard
It shall be unlawful for any person to create, maintain or cause any ground vibration which is perceptible without instruments at any point on any affected property adjoining the property on which

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the vibration source is located. For the purposes of this section, the perception threshold shall be presumed to be more than 0.05 inches per second.

PROJECT IMPACTS
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? Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would not result in adverse construction noise impacts or long-term operational noise impacts that would exceed local noise standards.

Addendum Finding Less Than Significant Impact: Implementation of the Proposed Project Modifications would not generate substantial temporary or a 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. The following analysis evaluates construction noise impacts, long-term operational noise impacts associated with implementation of the Proposed Project Modifications and offsite noise and vibration impacts.

CONSTRUCTION NOISE IMPACTS
The project site, including the residential lots and the area where the open space park area is proposed, has been previously rough graded. The rough grading activities would be the most intrusive source of construction noise impacts. The grading activities for the project were evaluated in the previously adopted IS/MND and were determined to be less than significant. Implementation of the Proposed Project Modifications would not create higher construction noise levels above the noise levels that were evaluated in the adopted IS/MND. Compared to the previously approved IS/MND, implementation of the Proposed Project Modifications would result in the same level of construction noise impacts.

TRAFFIC NOISE IMPACTS
Potential operation traffic noise impacts generated by the project were determined to be less than significant. The Proposed Project Modifications would not increase the amount of approved residential dwelling units. There would be no additional traffic trips generated by the project and no increase in mobile source impacts and because the project site would be gated and only accessible to residents there would be no increase in traffic noise impacts from offsite land uses. The primary access for the project site is a stop-controlled full access driveway at Laurel Canyon Way. The project would also provide a secondary access road through the southern portion of the Monteolivo site which would create a stop-controlled driveway on State Street that aligns with Bel Air Street for project residents only with a private gate which is not open to the public. There would be no cut through off site traffic that would increase mobile source noise impacts. The proposed project is forecast to generate a total of approximately 971 daily vehicle trips, including 73 vehicle trips during the morning peak hour and 97 vehicle trips during the evening peak hour. Traffic noise impacts were evaluated in the adopted IS/MND and determined to be less than significant. Noise levels from the volume of project traffic would not exceed transportation noise standards shown in table and potential impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of long-term operational noise impacts.

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OFFSITE NOISE IMPACTS
The project site is within the vicinity of two surface mining operations. Potential sources of noise affecting the project site would include blasting, operation of heavy construction equipment, and truck hauling of excavated materials. The Proposed Project Modifications include replacing a community recreation center with an open space park area. According to the City’s Noise Ordinance, open space area would not be considered a sensitive land use. The recreation center and open space park area would be utilized by the public and would be considered a sensitive receptor. Onsite blasting construction has occurred on the project site and was evaluated in the adopted IS/MND and determined to be less than significant. The proposed project modifications would not require any additional blasting. The adopted IS/MND did not evaluate compatibility of eh project with nearby surface mining operations. The following analysis evaluates the noise and vibration impacts from surface mining operations on the Monteolivo community.

Blasting Activities
Blasting activities are typically performed consistent with a blasting plan that specifies the blasting location, material used, depth of the charges and related factors that would minimize impulse noise.

By limiting the amount of charge in each hole, and detonating each charge successively with a time delay, the blasting contractor can limit the total energy released at any single time, which in turn reduces the airborne noise and energy associated with each individual detonated charge. The blasting of rocks would result in a temporary single event increase in noise levels, rather than a continuous noise source. A typical sound level for blasting, measured at 50 feet from the source, would be approximately 94 dBA. At each double of distance from the noise source, the noise level would be reduced by 6 dBA.

The project site would be subject to offsite noise sources from the FST North Plant Aggregate Mining and Vulcan Materials Surface Mining Operations. Both facilities use a combination of heavy equipment, drilling, and blasting to fracture rock material. The FST North Plant Aggregate Mining is 2,543 feet (.48 Mile) to the closest residential use and 3,496 feet (.66 Mile) to the proposed open space area. Vulcan Materials Surface Mining Operations is located 2,843 feet (.53 Mile) from the closest residential use and 3,379 feet (.63 Mile) from the proposed open space area. Table 2.13-2, Estimated Blasting Noise Levels to Closest Residential Use, and Table 2.13-3, Estimated Blasting Noise Levels Open Space Area, identifies the estimated noise levels from a single event blasting at the closest residential lot and the proposed open space area.

Table 2.13-2
Estimated Blasting Noise Levels to Closest Residential Use Noise Source Distance to Closest
Residential Lot Estimated Noise Level
Vulcan Materials Surface Mining Operations Lot 29 - 2,843 feet 62 dB FST North Plant Aggregate Mining Lot 39 - 2,543 feet 62 dB

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Table 2.13-3
Estimated Blasting Noise Levels Open Space Area
Noise Source Distance to Proposed
Open Space Area Estimated Noise Level
Vulcan Materials Surface Mining Operations 3,379 feet 59 dB FST North Plant Aggregate Mining 3,496 feet 59 dB
The blasting noise source would be overhead. There would be some noise absorption from the intervening topographic. Without consideration of the intervening slope, the estimated noise level at the open space area from a blasting event would be approximately 62 dB from both blasting operations.

The project site is currently vacant, and the existing ambient noise level would be much lower compared to what the ambient noise level would be after the site is developed with residential uses.

Assuming that the ambient noise level would meet the City’s daytime outdoor noise standard of 55dB, when the blasting operations would be occurring the noise level would be 7dB over the noise standard and would be noticeable but not intrusive. Estimated noise levels at the open space area would be 4dB over the ambient and would barely be discernable. The blasting impact would be considered a single noise event and would be over in seconds. Per Section 17.84.040(C)(2)(d) of the City of Corona Municipal Code, stationary noise impact cannot exceed the noise standard plus 20 dB for any period of time (Lmax). The existing blasting effects would be well below the threshold and would have less than significant noise impact.

Portable Rock Crusher
A portable crushing/processing facility is typically used onsite to crush and re-use existing rock material. Crushing operations would begin with a front-end loader picking up material and dumping the material into a primary crusher. The material would then be crushed, screened, and stacked in product piles. Electric power would most likely be provided by a diesel engine generator. Based on noise measurements that have been conducted for portable crushing operations (Ldn Consulting 2011), the crushing activity would generate a 3-hour average noise level of approximately 80 dBA at a distance of 100 feet from the combination of a jaw crusher and cone crusher. The rock crusher would be considered a continuous event. Table 2.13-4, Estimated Rock Crushing Noise Levels to Closest Residential Use, and Table 2.13-5, Estimated Rock Crushing Noise Levels Open Space Area, identifies the estimated noise levels to the closest residential use and proposed open space from rock crushing activities.

Table 2.13-4
Estimated Rock Crushing Noise Levels to Closest Residential Use Noise Source Distance to Closest
Residential Lot Estimated Noise Level
Vulcan Materials Surface Mining Operations Lot 29 - 2,843 feet 53 dB FST North Plant Aggregate Mining Lot 39 - 2,543 feet 53 dB

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Table 2.13-5
Estimated Rock Crushing Noise Levels Open Space Area
Noise Source Distance to Proposed
Open Space Area Estimated Noise Level
Vulcan Materials Surface Mining Operations 3,379 feet 50 dB FST North Plant Aggregate Mining 3,496 feet 50 dB
The estimated noise level at the closest residential use would be 53 dB and 50 dB at the open space area which would be below the City’s exterior noise standard of 55 dBA. With consideration of the topographic feature between the project site the estimated noise level would be approximately 43 dBA at the closest residential use and 40 dB at the open space area.

Heavy Construction Equipment Noise
Surface mining operations would involve the use of heavy construction equipment. The highest noise generating piece of construction equipment operating would be a bulldozer measured at 82 dB at 50 feet. Table 2.13-6, Estimated Noise Levels of Heavy Construction Equipment to Closest Residential Use, and Table 2.13-7, Estimated Noise Levels of Heavy Construction Equipment Open Space Area, identifies the estimated noise levels to the closest residential use and proposed open space from operation of heavy construction equipment activities. The estimated noise level at the closest residential use would be 49 dB and 46 dB at the open space area which would be below the City’s exterior noise standard of 55 dBA. With consideration of the topographic feature between the project site the estimated noise level would be approximately 39 dBA at the closest residential use and 36 dB at the open space area.

Table 2.13-6
Estimated Noise Levels of Heavy Construction Equipment to Closest Residential Use Noise Source Distance to Closest
Residential Lot Estimated Noise Level
Vulcan Materials Surface Mining Operations Lot 29 - 2,843 feet 49 dB FST North Plant Aggregate Mining Lot 39 - 2,543 feet 49 dB Table 2.13-7
Estimated Noise Levels of Heavy Construction Equipment Open Space Area Noise Source Distance to Proposed
Open Space Area Estimated Noise Level
Vulcan Materials Surface Mining Operations 3,379 feet 46 dB FST North Plant Aggregate Mining 3,496 feet 46 dB
Truck Hauling Noise
Materials removed from sand mining operations would be loaded onto large highway trucks to transport to customers. Truck hauling access for Vulcan Materials would occur along Sherborn Street.

Table 2.13-8, Estimated Truck Hauling Noise Levels to Closest Residential Use, and Table 2.13-9,

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Estimated Truck Hauling Noise Levels Open Space Area, identifies the estimated noise levels to the closest residential use and proposed open space from truck hauling noise. The estimated noise level at the closest residential use would be 59 dB and 53 dB at the open space area. With consideration of the topographic feature between the project site the estimated noise level would be approximately 49 dBA at the closest residential use and 53 dB at the open space area. Both are well below the City’s daytime noise standard.

Table 2.13-8
Estimated Truck Hauling Noise Levels to Closest Residential Use Noise Source Distance to Closest
Residential Lot Estimated Noise Level
Sherborn Street 1,500 feet 59 dB
Table 2.13-9
Estimated Truck Hauling Noise Levels Open Space Area
Noise Source Distance to Proposed
Open Space Area Estimated Noise Level
Sherborn Street 3,000 feet 53 dB
Offsite Noise Source Summary
The most noticeable noises activity from the surface mining operations would be from blasting activities. The noise levels would be within the allowable range of noise levels. The noise level would be discernable but would be infrequent and occur for only a second and would not be intrusive to the livelihood of residents. The noise generated from rock crushing, heavy construction equipment and truck hauling activities would be of sufficient distance of the residential and the proposed open space area and with the intervening topography, would result in noise levels that would not exceed the City’s exterior noise standard. Implementation of the Proposed Project Modifications would not expose sensitive receptors to increased offsite noise impacts that would result in significant noise impacts.

Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of offsite noise impacts. b) Generation of excessive groundborne vibration or groundborne noise levels?

BACKGROUND
Vibration impacts would mostly occur from the operation of equipment. Common sources of vibration impact from construction activities include blasting, pile-driving and the operation of heavy earthmoving equipment. Sensitive receptors for vibration include structures, especially older masonry structures, people and vibration sensitive equipment.

There are several different methods that are used to quantify vibration amplitude such as the maximum instantaneous peak in the vibrations velocity, which is known as the peak particle velocity (PPV). Presently, there is not a local threshold that quantifies the level at which excessive groundborne vibration occurs. Caltrans issued the Transportation- and Construction-Induced Vibration Guidance Manual in 2004. This manual provides practical guidance to Caltrans engineers, planners, and

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consultants who must address vibration issues associated with the construction, operation, and maintenance of Caltrans projects. This manual is also used as a reference point by many lead agencies and CEQA practitioners throughout California, as it provides numeric thresholds for vibration impacts.

Thresholds are established for vibration, which found that the human response becomes distinctly perceptible at the 0.25 inch per second PPV. The manual identifies that potential damage could occur at the 1.0 inch per second PPV threshold to residential structures and the 2.0 inch per second PPV threshold for potential damage to industrial and commercial structures.

Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would not result in adverse vibration impacts.

Addendum Finding Less Than Significant Impact: Construction activity can result in varying degrees of ground vibration, depending on the equipment used on the site.

CONSTRUCTION VIBRATION IMPACTS
The project site including the open space park area is proposed has been previously rough graded. The rough grading activities would be the most intrusive source of construction vibration impacts. The grading activities for the project were evaluated in the previously adopted IS/MND and were determined to be less than significant. Implementation of the Proposed Project Modifications would not create higher construction vibration impacts above levels that were evaluated in the previously adopted IS/MND. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of construction vibration impacts.

OPERATIONAL VIBRATION IMPACTS
Long-term operational vibration impacts associated with the project were determined to be less than significant. The Proposed Project Modifications would not include any activities that would increase operational vibration impacts above those evaluated in the previously adopted IS/MND. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of long-term operational vibration impacts.

OFFSITE VIBRATION IMPACTS
Surface mining operations occurring in the vicinity could be a potential source for vibration impacts.

The activity that would have the greatest potential for significant vibration impacts would be from blasting. The magnitude of the vibration varies depending on the type and characteristics of the explosive, amount of charge, the method of explosion, the size of the free surface, the distance between the explosives and the measuring point, the geological condition, and other factors. Graph

2.13-1, Volcanic Rock Construction Blasting Vibration Data, provides a sampling of volcanic rock blasting activities at different distances and the associated vibration level. As shown in Graph 2.13-1, the 1.0 inch per second PPV threshold for damage to residential structures would occur at distance below 1,000 feet. The FST North Plant Aggregate Mining is 2,543 feet (0.48 miles) to the closest residential use and 3,496 feet (0.66 miles) to the proposed open space area. Vulcan Materials Surface Mining Operations is located 2,843 feet (0.53 miles) from the closest residential use and 3,379 feet (0.63 miles) from the proposed open space area.

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Graph 2.13-1
Volcanic Rock Construction Blasting Vibration Data
Source: Vibrationdamage.com; accessed on January 15, 2021.

According to the City of Corona Noise Ordinance, it shall be unlawful for any person to create, maintain or cause any ground vibration which is perceptible without instruments at any point on any affected property adjoining the property on which the vibration source is located. For the purposes of this section, the perception threshold shall be presumed to be more than 0.05 inches per second.

To exceed City of Corona Vibration standard of 0.05 PPV, the closest sensitive receptor would need to be as close as 900 feet to the blasting noise. The nearest residential uses are 2,543 feet away from the closest surface mining operation, therefore potential vibration impacts on residential uses would be less than significant; refer to Table 2.13-10, Estimated Vibration Levels of Heavy Construction Equipment to Closest Residential Use. Additionally, the proposed open space area is located approximately 3,379 feet from the closest surface mining operation, therefore potential vibration impacts would be less than significant; refer to Table 2.13-11, Estimated Vibration Levels of Heavy Construction Equipment Open Space Area. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of vibration impacts.

Table 2.13-10
Estimated Vibration Levels of Heavy Construction Equipment to Closest Residential Use Vibration Source Distance to Closest
Residential Lot Estimated Vibration Level
Vulcan Materials Surface Mining Operations Lot 29- 2,843 feet Less than 0.05 PPV FST North Plant Aggregate Mining Lot 39- 2,543 feet Less than 0.05 PPV

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Table 2.13-11
Estimated Vibration Levels of Heavy Construction Equipment Open Space Area Vibration Source Distance to Proposed
Open Space Area Estimated Vibration Level
Vulcan Materials Surface Mining Operations 3,379 feet Less than 0.05 PPV FST North Plant Aggregate Mining 3,496 feet Less than 0.05 PPV 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?
Previously Approved MND Finding Less Than Significant Impact: The previously adopted IS/MND determined the original project would not be subject to excessive aircraft noise impacts.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would occur in the same general area and are not subject to excessive aircraft noise impacts. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of aircraft noise impacts.

SUMMARY OF FINDINGS FOR NOISE
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.14 Population and Housing
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. 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)?
b. Displace substantial numbers of existing people or
housing, necessitating the construction of
replacement housing elsewhere?

ENVIRONMENTAL ANALYSIS
a) 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)?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would have a less than significant impact regarding unplanned population growth.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential to induce a substantial unplanned population growth in an area, either directly or indirectly. The Proposed Project Modifications would not increase the number of proposed residential units on the project site. The Proposed Project Modifications would not facilitate additional growth within the project area beyond what is planned for in the City’s General Plan. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of unplanned population growth impacts.
b) Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined the original project would not displace existing residential use that would require the construction of replacement housing.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase the potential to displace a substantial number of existing people or housing, necessitating the construction of replacement housing elsewhere. The Proposed Project Modifications would provide private gated circulation through the project and would replace the previously proposed recreation center with an open space park area. The Proposed Project Modifications would not displace existing people or housing that requires the construction of replacement housing. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts to existing people and housing and the need for replacement housing.

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SUMMARY OF FINDINGS FOR POPULATION AND HOUSING
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.15 Public Services
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
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:

1) Fire protection?
2) Police protection?
3) Schools?
4) Parks?
5) Other public facilities?

ENVIRONMENTAL ANALYSIS
a) Would the project 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:
1) Fire protection?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would have no impact on fire protection.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for fire protection service beyond the level of demand generated from the project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts to fire protection. 2) Police protection?
Previous MND Finding No Impact: The previously approved IS/MND determined the project would have no impact on police protection.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase demand for police protection beyond the level of demand generated from the

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project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts to police protection. 3) Schools?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would have no impact on schools.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for schools beyond the level of demand generated from the original project. Compared to the adopted IS/MND original project, the Proposed Project Modifications would result in the same level of impacts to schools.
4) Parks?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would have no impact on parks.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for parks beyond the level of demand generated from the original project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts to parks.
5) Other public facilities?
Previously Approved MND Finding: The previously approved IS/MND determined the original project would have no impact on other public facilities.

Addendum Finding: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for other public facilities beyond the level of demand generated from the original project. Compared to the adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts to other public facilities.

SUMMARY OF FINDINGS FOR PUBLIC SERVICES
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.16 Recreation
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Increase the use of existing neighborhood and
regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
b. Include recreational facilities or require the
construction or expansion of recreational facilities
which might have an adverse physical effect on the
environment?

ENVIRONMENTAL ANALYSIS
a) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
Previously Approved MND Finding: The previously approved IS/MND did not evaluate potential impacts to recreation facilities.

Addendum Finding Less Than Significant Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for recreation facilities. The Proposed Project Modifications would replace the proposed recreation center with an equivalent amount of open space for passive and active recreation. Therefore, there would not be any onsite loss of recreation facilities. Implementation of the Proposed Project Modifications would not increase the demand for new recreation facilities nor increase the use of existing recreation facilities.
b) Include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? Previously Approved MND Finding: The previously approved IS/MND did not evaluate potential impacts to recreation facilities.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would replace the proposed recreation center with an equivalent amount of open space for passive and active recreation and would not have an adverse impact on the environment.

SUMMARY OF FINDINGS FOR RECREATION
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed.

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• No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

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2.17 Transportation
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Conflict with a program plan, ordinance or policy
addressing the circulation system, including transit,
roadway, bicycle and pedestrian facilities?
b. Conflict or be inconsistent with CEQA Guidelines
Section 15064.3, subdivision (b)?
c. Substantially increase hazards due to a geometric
design feature (e.g., sharp curves or dangerous
intersections) or incompatible uses (e.g., farm
equipment)?
d. Result in inadequate emergency access?

ENVIRONMENTAL ANALYSIS
The following analysis is based on the Traffic Analysis Report that was conducted by Ganddini Group, Inc., on June 13, 2023. The analysis is presented in Appendix C, Traffic Analysis Report.

Setting
The project site is located east of Interstate 15 (I-15) between Laurel Canyon Way and State Street in the City of Corona. The northern portion of the project site, which is located within the City of Corona, is proposed to be developed with 103 dwelling units of single-family detached housing. The southern portion of the project site, which is located within the County of Riverside, is not being processed at this time. For the purpose of this traffic analysis, the southern portion would be considered as a future phase of the overall site in the cumulative traffic conditions that could be potentially developed with 38 dwelling units of single-family detached housing.

STUDY AREA INTERSECTIONS
Based on the study intersections identified in the approved scoping agreement, the study area consists of the following study intersections within the County of Riverside, Caltrans and City of Corona jurisdictions; refer to Figure 2.17-1, Project Study Intersection Locations, and Table 2.17-1, Study Area Intersections.

Table 2.17-1
Study Area Intersections
Study Intersections Jurisdiction

1. Rimpau Avenue (NS) at Magnolia Avenue (EW) City of Corona

2. Rimpau Avenue (NS) at California Avenue (EW) City of Corona

3. Rimpau Avenue (NS) at Olympic Drive (EW) City of Corona

4. Rimpau Avenue (NS) at Old Temescal Road (EW) City of Corona

5. California Avenue (NS) at Old Temescal Road (EW) City of Corona

6. Compton Avenue (NS) at Old Temescal Road (EW) City of Corona

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-2 Transportation
Study Intersections Jurisdiction

7. Laurel Canyon Way (NS) at Project Driveway (EW) City of Corona

8. State Street (NS) at Bel Air Street/Project Driveway (EW) County of Riverside

9. State Street (NS) at Ontario Avenue (EW) County of Riverside

10. I-15 Southbound Ramps (NS) at Ontario Avenue (EW) Caltrans

11. I-15 Northbound Ramps (NS) at Ontario Avenue (EW) Caltrans

12. California Avenue (NS) at Ontario Avenue (EW) City of Corona

13. El Sobrante Road (NS) at Magnolia Avenue (EW) City of Corona

14. I-15 Southbound Ramps (NS) at Magnolia Avenue (EW) Caltrans

15. I-15 Northbound Ramps (NS) at Magnolia Avenue (EW) Caltrans

16. Compton Avenue at Ontario Avenue City of Corona
Notes: (NS) = north-south roadway; (EW) = east-west roadway Source: Ganddini Group, Inc., Monte Olivo (Northern Portion) Traffic Analysis, June 13, 2023.

STUDY AREA ROADWAY LINKS
Based on the study intersections identified in the approved scoping agreement, the study area consists of the following study roadway links:
• Compton Avenue, north of Old Temescal Road
• Compton Avenue, Old Temescal Road to Ontario Avenue
• State Street, Bel Air Street to Ontario Avenue
• Old Temescal Road, Rimpau Avenue to California Avenue • Old Temescal Road, California Avenue to Compton Avenue • Old Temescal Road, Compton Avenue to Bel Air Street
• Ontario Avenue, California Avenue to Compton Avenue
• Ontario Avenue, I-15 Northbound Ramps to State Street • Rimpau Avenue, Magnolia Avenue to California Avenue
• Rimpau Avenue, California Avenue to Olympic Drive
• Rimpau Avenue, Olympic Drive to Old Temescal Road
• Magnolia Avenue, Rimpau Avenue to El Sobrante Road
Regional access to the project site is provided by I-15 located just south of the project site. Key roadways providing local circulation include Rimpau Avenue, California Avenue, Compton Avenue, Old Temescal Road, Laurel Canyon Way, Ontario Avenue and State Street. Figure 2.17-2, Existing Lane Geometry and Intersection Traffic Controls, identifies the lane geometry and intersection traffic controls for Existing conditions based on a field survey of the study area.

EXISTING ROADWAY VOLUMES
The Existing 2022 average daily traffic volumes within the study area are shown in Figure 2.17-3, Existing Average Daily Traffic Volumes. As part of the analysis, some 2017 traffic volumes provided by the City of Corona have been factored up to Year 2022 conditions with an annual growth rate of 2% over 5 years or a total growth factor of 10%. For locations where 24-hour roadway link traffic counts were not available, the Existing average daily traffic volumes have been factored from peak hour intersection turning movement volumes. The peak hour to daily volume factor was derived based on a comparison of the existing evening peak hour intersection turning movement volumes with sample 24-hour roadway segment volume counts collected in the study area. This is a conservative estimate and may overestimate the average daily traffic volumes.

Site
Study Intersection
Legend
#
Community Gate
Study Roadway Segment

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 OLD TEMESCAL RD
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-1
Project Study Intersection Locations
Source: Ganddini Group, Inc.; June 13, 2023.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
1 Rimpau Ave (NS)/
Magnolia Ave (EW)
2 Rimpau Ave (NS)/
California Ave (EW)
3 Rimpau Ave (NS)/
Olympic Dr (EW)
4 Rimpau Ave (NS)/
Old Temescal Rd (EW)
5 California Ave (NS)/
Old Temescal Rd (EW)
6 Compton Ave (NS)/
Old Temescal Rd (EW)
7 Laurel Canyon Way (NS)/
Project Dwy (EW)
8 State St (NS)/
Bel Air St/Project Dwy (EW)
9 State St (NS)/
Ontario Ave (EW)
10 I-15 SB Ramps (NS)/
Ontario Ave (EW)
I-15 NB Ramps (NS)/
Ontario Ave (EW)
12 California Ave (NS)/
Ontario Ave (EW)
RTO
d
d
d
d
d
d
AWS
AWS
d
d
AWS
STOP
d
d
STOP
STOP
11 YIELD
d
Traffic Signal
All Way Stop
Stop Sign
#-Lane Divided Roadway
#-Lane Undivided Roadway
Existing Lane
Right Turn Overlap
De Facto Right Turn Lane
Yield Sign
Legend
#D
#U
RTO
d
AWS
STOP
YIELD
Speed Limit Sign
El Sobrante Rd (NS)/
Magnolia Ave (EW)
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW)
13 RTO
4U
4U
4U
4D
2D
6D
6D
6D
2U
2U
2U
6D
6D
6D
5D
4D
3D
2D
2D
2U
2D
2U
2U 2U
2U 2U
2U
2U
2U
2U
2U
2U
2U
2U
2U
2U
2U
4D
4D
2U
4D
35 MPH
35 MPH
35 MPH
25 MPH
F
F Free Right Turn Lane
Compton Ave (NS)/
Ontario Ave (EW)
16 STOP
F
16 OLD TEMESCAL RD
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-2
Existing Lane Geometry and Intersection Traffic Controls Source: Ganddini Group, Inc.; June 13, 2023.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST
RIMPA
U
A
VE

OLYMPIC DR
C

AL FI O
R
N
AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O
MPT
O
N
A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15

1.7 7.0

13.6 13.5 7.6

16.8 21.8

10.6 0.1 16.1

18.7 35.6

42.0 15.5

32.5 0.7

15.1 26.0

39.9 44.5

33.3 36.5

5.6 4.2 3.0

4.5 5.3 3.1

1.3 0.7
Vehicles Per Day (1,000's)
Legend
##
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-3
Existing Average Daily Traffic Volumes
Source: Ganddini Group, Inc.; June 13, 2023.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-6 Transportation
Existing peak hour traffic conditions are based upon morning peak period and evening peak period intersection turning movement counts that were obtained in November 2022 and April 2023 during typical weekday conditions. The weekday morning peak period was counted between 7:00 AM and 9:00 AM and the weekday evening peak period was counted between 4:00 PM and 6:00 PM. The actual peak hour within the peak period is the four consecutive 15-minute periods with the highest total volume when all movements are added together. Thus, the weekday evening peak hour at one intersection may be 4:45 PM to 5:45 PM if those four consecutive 15-minute periods have the highest combined volume. Figure 2.17-4, Existing AM Peak Hour Intersection Turning Movement Volumes, and Figure 2.17-5, Existing PM Peak Hour Intersection Turning Movement Volumes, show the Existing morning peak hour and evening peak hour intersection turning movement volumes.

EXISTING LEVEL OF SERVICE
The intersection Levels of Service for Existing conditions have been calculated and are shown in Table

2.17-2, Existing Intersection Level of Service. As shown in Table 2.17-2, the study intersections currently operate within acceptable Levels of Service (LOS) during the peak hours for Existing conditions, except for State Street/Ontario Avenue – #9 that is projected to operate at deficient Levels of Service (E or F).

Additionally, a traffic signal appears to currently be warranted at State Street/Ontario Avenue – #9 intersection based upon the California Manual on Uniform Traffic Control Devices (2014), peak hour volume warrant (Warrant 3), for Existing conditions.

Table 2.17-2
Existing Intersection Level of Service
Intersection AM
Peak Hour LOS
PM
Peak Hour LOS

1. Rimpau Avenue at Magnolia Avenue C C

2. Rimpau Avenue at California Avenue A B

3. Rimpau Avenue at Olympic Drive B B

4. Rimpau Avenue at Old Temescal Road C B

5. California Avenue at Old Temescal Road B B

6. Compton Avenue at Old Temescal Road A A

8. State Street at Bel Air Street/Project Driveway A A

9. State Street at Ontario Avenue D E

10. I-15 SB Ramps at Ontario Avenue C B

11. 1-15 NB Ramps at Ontario Avenue B B

12. California Avenue at Ontario Avenue C C

13. El Sobrante Rd at Magnolia Avenue D D

14. I-15 SB Ramps at Magnolia Avenue C D

15. I-15 NB Ramps at Magnolia Avenue B B

16. Compton Avenue at Ontario Avenue C B
Source: Ganddini Group, Inc., Monte Olivo (Northern Portion) Traffic Analysis, June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW) 101 271
481
42269115
88 825
104
542
1084
69 2
Rimpau Ave (NS)/
California Ave (EW)69211 872
1 181
3 Rimpau Ave (NS)/
Olympic Dr (EW) 31 420
17 175517181
223
14 119
70 36
59 4
Rimpau Ave (NS)/
Old Temescal Rd (EW) 34 40147 108 323 106
78 109
38 35
86 92
5 California Ave (NS)/
Old Temescal Rd (EW) 81 22721
57912
35 78
117
17 75
69 6
Compton Ave (NS)/
Old Temescal Rd (EW) 216 10813
080
7 11
60 10
18 7
7 Laurel Canyon Way (NS)/
Project Dwy (EW)24
0 350
0 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
290
0120
0 0
2 0
0 0
9 State St (NS)/
Ontario Ave (EW)
501
75019
47 388
2 1
960
12 10
I-15 SB Ramps (NS)/
Ontario Ave (EW)
9382262
950
467
29 1345
11 I-15 NB Ramps (NS)/
Ontario Ave (EW) 3542
33 618
539
1046
270
12 California Ave (NS)/
Ontario Ave (EW) 107 199
103
5876186
185
753
63 236
952
290
13 El Sobrante Rd (NS)/
Magnolia Ave (EW) 1518
106
10236118
59 1286
41 96
1612
178
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
11330460
1331
179
327
757
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW) 262
471
929
860
822
323
16 Compton Ave (NS)/
Ontario Ave (EW)
323
134
1137
58 277
1508
572
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-4
Existing AM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW) 127 355
615
40321202
73 885
72 455
945
101
2 Rimpau Ave (NS)/
California Ave (EW)6366 793
13 366
3 Rimpau Ave (NS)/
Olympic Dr (EW) 32 488
10 71626109
64 8
26 9
13 128
4 Rimpau Ave (NS)/
Old Temescal Rd (EW) 23 27745 52448 99
26 122
43 33
101
115
5 California Ave (NS)/
Old Temescal Rd (EW) 118 19126 25156 17
16 77
169
57 74
44 6
Compton Ave (NS)/
Old Temescal Rd (EW) 1008512 1925
1 13
21 65
5 21
1 7
Laurel Canyon Way (NS)/
Project Dwy (EW)34
0 270
0 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
190
2120
0 0
3 0
0 0
9 State St (NS)/
Ontario Ave (EW)
400
59037
41 936
5 0
528
14 10
I-15 SB Ramps (NS)/
Ontario Ave (EW)
6742401
1094
428
23 840
11 I-15 NB Ramps (NS)/
Ontario Ave (EW) 3542
35 549
1032
421
278
12 California Ave (NS)/
Ontario Ave (EW) 201 205
139
118209360
249
799
163
315
568
119
13 El Sobrante Rd (NS)/
Magnolia Ave (EW) 7028
192
12544159
84 1542
75 118
1395
186
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
12270378
1624
180
333
634
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW) 148
376
985
1044
829
555
16 Compton Ave (NS)/
Ontario Ave (EW)
259
216
1292
75 275
883
258
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-5
Existing PM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-9 Transportation

METHODOLOGY AND PERFORMANCE STANDARDS
This section discusses the analysis methodologies used to assess transportation facility performance as adopted by the respective jurisdictional agencies.

Intersection Delay Analysis Methodology
The technique used to assess the performance of intersections within the traffic analysis is known as the intersection delay methodology based on the procedures contained in the Highway Capacity Manual (Transportation Research Board, 6th Edition). The methodology considers the traffic volume and distribution of movements, traffic composition, geometric characteristics, and signalization details to calculate the average control delay per vehicle and corresponding LOS. Control delay is defined as the portion of delay attributed to the intersection traffic control (such as a traffic signal or stop sign) and includes initial deceleration, queue move-up time, stopped delay, and final acceleration delay. The intersection control delay is then correlated to LOS based on the following thresholds shown in Table

2.17-3, Level of Service.

Table 2.17-3
Level of Service
Level of Service
Intersection Control Delay (Seconds/Vehicle)
Signalized Intersection Unsignalized Intersection
A ≤ 10.0 ≤ 10.0
B > 10.0 to ≤ 20.0 > 10.0 to ≤ 15.0
C > 20.0 to ≤ 35.0 > 15.0 to ≤ 25.0
D > 35.0 to ≤ 55.0 > 25.0 to ≤ 35.0
E > 55.0 to ≤ 80.0 > 35.0 to ≤ 50.0
F > 80.0 > 50.0
Source: Ganddini Group, Inc., Monte Olivo (Northern Portion) Traffic Analysis, June 13, 2023.

LOS is used to qualitatively describe the performance of a roadway facility, ranging from LOS A (freeflow conditions) to LOS F (extreme congestion and system failure); refer to Figure 2.17-6, Traffic Levels of Service. At intersections with traffic signals or all way stop control, the LOS is determined by the average control delay for the overall intersection. At intersections with cross street stop control (i.e., one- or two-way stop control), the LOS is determined by the average control delay for the worst individual movement (or movements sharing a single lane).

Roadway Link Capacity Analysis
The road link capacity analysis is assessed based on the theoretical 24-hour average daily traffic (ADT) capacity for roadways in terms of volume over capacity ratios. The roadway link daily traffic capacity is shown as the maximum allowed under “Estimated 24 Hour Traffic (ADT)” in the “City of Corona Street Design Table” for a particular street classification. In accordance with the City’s General Plan, Riverside County roadways located with the City’s Sphere of Influence shall be maintained at LOS “C” or better per the “Riverside County Level of Service Criteria”.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-6
Traffic Levels of Service
Source: Stantec Consulting Services Inc.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-11 Transportation
Performance Standards
City of Corona. The City of Corona has established LOS D as the minimum acceptable LOS.

County of Riverside. The definition of an intersection deficiency has been obtained from the County of Riverside General Plan. The County General Plan states that peak hour intersection operations of LOS C or better are generally acceptable along all County maintained roads and conventional state highways. As an exception, LOS D may be allowed in Community Development areas, only at intersections of any combination of Secondary Highways, Major Highways, Arterial Highways, Urban Arterial Highways, Expressways, convention state highways, or freeway ramp intersections.

California Department of Transportation (Caltrans). As stated in the Guide for the Preparation of Traffic Impact Studies (State of California, 2002), the “California Department of Transportation endeavors to maintain a target LOS at the transition between LOS “C” and LOS “D” on State highway facilities”.

Caltrans acknowledges this may not always be feasible and recommends consultation with Caltrans to determine the appropriate target LOS. For consistency with local requirements, this analysis defines LOS D as the minimum acceptable LOS for State Highway facilities.

PROJECT IMPACTS
a) Conflict with a program plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated:

The previously approved IS/MND determined that all study area intersections and roadway segments would operate at acceptable levels of service except for the intersection of Compton Avenue at Old Temescal Road and Rimpau Avenue at Old Temescal Road. Mitigation Measures T-4 and T-5 were recommended which required improvements to both intersections. With the incorporation of Mitigation Measures T-4 and T-5, the previously adopted IS/MND determined potential traffic impacts would be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The proposed Project Modifications would not conflict with a program plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities.

VEHICULAR CIRCULATION SYSTEM
The identification of deficient operations is a requirement of the California Environmental Quality Act.

The County General Plan and Circulation Element have been adopted in accordance with the California Environmental Quality Act requirements, and any roadway improvements within the County of Riverside that are consistent with these documents are not considered deficient, so long as the project contributes its “fair share” funding for improvements. A traffic deficiency is considered significant if the project both: (i) contributes measurable traffic to and (ii) substantially and adversely changes the LOS at any offsite location projected to experience deficient operations (LOS E or F) under foreseeable cumulative conditions, where feasible improvements consistent with the County General Plan cannot be constructed.

The following scenarios are analyzed during typical weekday morning and evening peak hour conditions:

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-12 Transportation
• Existing Conditions
• Existing Plus Project Conditions
• Opening Year (2025) With Project Conditions
Proposed Project Circulation System
The northern portion of the project site, which is located within the City of Corona, is proposed to be developed with 103 dwelling units of single-family detached housing. The southern portion of the project site, which is located within the County of Riverside, is being processed separately from this portion. For the purpose of this analysis, the southern portion would be considered as a future phase of the overall site in the cumulative traffic conditions that could be potentially developed with 38 dwelling units of single-family detached housing.

The primary access for the project site is a stop-controlled full access driveway at Laurel Canyon Way with a private gate. The project would also provide a secondary access road through the southern portion of the Monteolivo site which would create a stop-controlled driveway on State Street that aligns with Bel Air Street for project residents only with a private gate which is not open to the public.

Project Trip Generation
Trip generation rates were determined for daily trips, morning peak hour inbound and outbound trips, and evening peak hour inbound and outbound trips for the proposed land uses. Table 2.17-4, Trip Generation, shows the project trip generation based upon trip generation rates obtained from the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition, 2021. Trip generation rates were determined for daily trips, morning peak hour inbound and outbound trips, and evening peak hour inbound and outbound trips for the proposed land uses. The number of trips forecast to be generated by the proposed project are determined by multiplying the trip generation rates by the land use quantities.

Table 2.17-4
Trip Generation
Land Use DU
AM Peak PM Peak Weekday
Daily In Out Total In Out Total
Phase 1 (Northern Portion)
Single-Family Detached Housing 103 19 54 73 61 36 97 971 Phase 2 (Southern Portion)
Single-Family Detached Housing 38 7 20 27 22 13 35 358
Note: DU-Dwelling Units
Source: Ganddini Group, Inc., Monte Olivo (Northern Portion) Traffic Analysis, June 13, 2023.

As shown in Table 2.17-4, the proposed project is forecast to generate a total of approximately 971 daily vehicle trips, including 73 vehicle trips during the morning peak hour and 97 vehicle trips during the evening peak hour.

PROJECT TRIP DISTRIBUTION AND ASSIGNMENT
The forecast directional outbound and inbound distribution patterns for the project generated trips is shown in Figure 2.17-7, Project Trip Generation. The project trip distribution patterns are based on the review of existing volume data, surrounding land uses, designated truck routes, and the local and

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-13 Transportation
regional roadway facilities in the project vicinity. Based on the identified project trip generation and distributions, project average daily traffic volumes have been calculated and shown on Figure 2.17-8, Project Average Daily Traffic Volumes. Project morning and evening peak hour intersection turning movement volumes expected from the project are depicted on Figure 2.17-9, Project AM Peak Hour Intersection Turning Movement Volumes, and Figure 2.17-10, Project PM Peak Hour Intersection Turning Movement Volumes.

PROJECT DESIGN FEATURES
This analysis assumes the following improvements would be constructed by the project to provide project site access:

PDF-T-1: At the project driveway at Laurel Canyon Way (Intersection No. 7) • Install a westbound stop sign with a private gate.
• Provide a westbound shared left-right lane.

PDF-T-2: At the project driveway at State Street (Intersection No. 8 – Opposite Bel Air Street) • Install a westbound stop sign with private gate.
• Provide a westbound shared left-right lane.

The primary access for the Monteolivo community would be a stop-controlled full access driveway at Laurel Canyon Way with a private gate. The project would also provide a secondary access road through the southern portion of the Monteolivo community which would create a stop-controlled driveway on State Street that aligns with Bel Air Street for project residents only with a private gate and would not be open to the public.

FUTURE CUMULATIVE TRAFFIC TRIPS
Ambient Growth Rate
To account for ambient growth on roadways, existing 2022 roadway volumes were increased by a growth rate of two percent (2%) per year over three years for Opening Year (2025) conditions. This equates to a total growth factor of approximately six percent (6%). The ambient growth rate was conservatively applied to all movements at the study intersections.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15
15%
40%
20%
5%
5%
10%
5%
20%
5%
60%
60%
5% 15%
3%
2%
10%
20%
5%
5%
10%
5%
5%
Percent To/From Project
Legend
10%
45%
15%
30%
5%
10%
5%
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-7
Project Trip Generation
Source: Ganddini Group, Inc.; June 13, 2023.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15

0.6 0.1

0.1 0.1

0.1 0.2
NOM

0.2 0.4

0.2 0.2 0.1

0.1 0.1

0.1 0.1

0.1 0.1

0.1 0.1
NOM 0.1 0.4

0.4 Vehicles Per Day (1,000's)
Legend
##

0.1 MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-8
Project Average Daily Traffic Volumes
Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW)
336
010
0 0
1 2
0 0
2 Rimpau Ave (NS)/
California Ave (EW)
30 1
0 9
3 Rimpau Ave (NS)/
Olympic Dr (EW)
030
010
0 0
0 0
0 0
4 Rimpau Ave (NS)/
Old Temescal Rd (EW)
001
001
0 0
0 2
1 3
5 California Ave (NS)/
Old Temescal Rd (EW)
002
003
0 2
0 4
6 9
6 Compton Ave (NS)/
Old Temescal Rd (EW)
002
000
0 7
0 5
19 0
7 Laurel Canyon Way (NS)/
Project Dwy (EW)
09 00
24 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
00 12
000
0 0
0 30
0 0
9 State St (NS)/
Ontario Ave (EW)
000
2208
9 0
0 0
0 3
10 I-15 SB Ramps (NS)/
Ontario Ave (EW)
004
2 2
7 6
11 I-15 NB Ramps (NS)/
Ontario Ave (EW)
103
0 6
11 11
12 California Ave (NS)/
Ontario Ave (EW)
011
022
0 1
0 2
3 1
13 El Sobrante Rd (NS)/
Magnolia Ave (EW)
000
000
0 6
0 0
2 0
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
100
6 0
0 1
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW)
3 0
0 3
1 0
16 Compton Ave (NS)/
Ontario Ave (EW)
0 0 4
0 0
6 0
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-9
Project AM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW)
224
030
0 0
3 6
0 0
2 Rimpau Ave (NS)/
California Ave (EW)
20 3
0 6
3 Rimpau Ave (NS)/
Olympic Dr (EW)
020
030
0 0
0 0
0 0
4 Rimpau Ave (NS)/
Old Temescal Rd (EW)
002
003
0 1
0 1
1 2
5 California Ave (NS)/
Old Temescal Rd (EW)
005
009
0 6
0 3
4 6
6 Compton Ave (NS)/
Old Temescal Rd (EW)
006
000
0 20
0 4
13 0
7 Laurel Canyon Way (NS)/
Project Dwy (EW)
0 26
00 17
0 8
State St (NS)/
Bel Air St/Project Dwy (EW)
00 35
000
0 0
0 20
0 0
9 State St (NS)/
Ontario Ave (EW)
000
1505
26 0
0 0
0 9
10 I-15 SB Ramps (NS)/
Ontario Ave (EW)
0012
5 2
5 6
11 I-15 NB Ramps (NS)/
Ontario Ave (EW)
309
0 17
8 7
12 California Ave (NS)/
Ontario Ave (EW)
022
012
0 3
0 1
2 3
13 El Sobrante Rd (NS)/
Magnolia Ave (EW)
000
000
0 4
0 0
6 0
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
300
4 0
0 3
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW)
2 0
0 2
3 0
16 Compton Ave (NS)/
Ontario Ave (EW)
0 0 6
0 0
6 0
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-10
Project PM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-18 Transportation
Other Development
To account for trips generated by future development, trips generated by pending or approved other development projects in the City of Corona and County of Riverside were added to the study area. The development projects include single-family residential, multi-family residential and commercial land uses. A listing of the other development projects considered in the analysis is provided in Section 5 of the Traffic Analysis Report. The southern portion of the project site, which is located within the County of Riverside, is being processed separately from this portion. For the purpose of this analysis, the southern portion would be considered as a future phase of the overall site in the cumulative traffic conditions that could be potentially developed with 38 dwelling units of single-family detached housing. Figure 2.17-11, Cumulative Project (Monteolivo – Southern Portion) Trip Distribution, shows the trip distribution patterns for the southern portion of the Monteolivo project. Figure 2.17-12, Other Development Average Daily Traffic Volumes, shows the forecast average daily traffic volumes for the other development. Figure 2.17-13, Other Development AM Peak Hour Intersection Turning Movement Volumes, and Figure 2.17-14, Other Development PM Peak Hour Intersection Turning Movement Volumes, show the forecast morning and evening peak hour intersection turning movement volumes for trips generated by other developments.

OPERATIONAL ANALYSIS
Existing Plus Project Condition
The intersection Levels of Service for Existing Plus Project conditions are shown in Table 2.17-5, Existing Plus Project Intersection Levels of Service. Existing Plus Project average daily traffic volumes are shown on Figure 2.17-15, Existing Plus Project Average Daily Traffic Volumes. Existing Plus Project morning and evening peak hour intersection turning movement volumes are shown on Figure 2.17-16, Existing Plus Project AM Peak Hour Intersection Turning Movement Volumes, and Figure 2.17-17, Existing Plus Project PM Peak Hour Intersection Turning Movement Volumes.

Table 2.17-5
Existing Plus Project Intersection Levels of Service
Intersection
AM
Without
Project
AM
With
Project
PM
Without
Project
PM
With
Project

1. Rimpau Avenue at Magnolia Avenue C C C C

2. Rimpau Avenue at California Avenue A A B B

3. Rimpau Avenue at Olympic Drive B C B B

4. Rimpau Avenue at Old Temescal Road C E B B

5. California Avenue at Old Temescal Road B C B B

6. Compton Avenue at Old Temescal Road A C A A

7. Laurel Canyon Way at Project Driveway A A A A

8. State Street at Bel Air Street A A A A

9. State Street at Ontario Avenue
• Traffic Signal
D
-
D
A
E
-
E
A

10. I-15 SB Ramps at Ontario Avenue C C B B

11. 1-15 NB Ramps at Ontario Avenue B B B B

12. California Avenue at Ontario Avenue C C C C

13. El Sobrante Rd. at Magnolia Avenue D D D D

14. I-15 SB Ramps at Magnolia Avenue C C D D

15. I-15 NB Ramps at Magnolia Avenue B B B B

16. Compton Avenue at Ontario Avenue C C B B
Source: Ganddini Group, Inc., Monte Olivo (Northern Portion) Traffic Analysis, June 13, 2023.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15
15%
20%
25%
5%
5%
20%
20%
10%
80%
80%
3% 15%
2%
5%
18%
5%
8%
5%
5%
Percent To/From Project
Legend
10%
65%
Southern portion of
the overall Monte
Olivo project site (38
DU) will be processed
through County of
Riverside, and it will
be included as Phase
2 in the Cumulative
traffic conditions
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-11
Cumulative Project (Monteolivo – Southern Portion) Trip Distribution Source: Ganddini Group, Inc.; June 13, 2023.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15

0.3 NOM

0.2 0.1

0.2 0.2

0.2 0.1

0.9 0.3

0.3 0.3

0.5 0.2

1.1 1.3

1.3 3.3

2.3 NOM
NOM NOM 0.1

0.1 Vehicles Per Day (1,000's)
Legend
##
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-12
Other Development Average Daily Traffic Volumes
Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
1 Rimpau Ave (NS)/
Magnolia Ave (EW)
233
022
0 89
1 2
25 2
2 Rimpau Ave (NS)/
California Ave (EW)
50 4
0 3
3 Rimpau Ave (NS)/
Olympic Dr (EW)
050
040
0 0
0 0
0 0
4 Rimpau Ave (NS)/
Old Temescal Rd (EW)
040
040
0 0
0 0
0 1
5 California Ave (NS)/
Old Temescal Rd (EW)
000
001
0 0
0 0
1 3
6 Compton Ave (NS)/
Old Temescal Rd (EW)
000
000
0 1
0 0
4 0
7 Laurel Canyon Way (NS)/
Project Dwy (EW)
01 00
4 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
005
000
0 0
0 16
0 0
9 State St (NS)/
Ontario Ave (EW)
000
1503
6 2
0 0
2 1
10 I-15 SB Ramps (NS)/
Ontario Ave (EW)
1012
7 2
10 9
11 I-15 NB Ramps (NS)/
Ontario Ave (EW)
209
2 17
17 13
12 California Ave (NS)/
Ontario Ave (EW)
301
000
0 8
5 2
7 1
13 El Sobrante Rd (NS)/
Magnolia Ave (EW)
000
000
0 94
0 0
29 0
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
1099
93 1
25 28
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW)
0 99
191
1 53
25 16
Compton Ave (NS)/
Ontario Ave (EW)
0 0 9
0 0
10 0
16 MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-13
Other Development AM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
1 Rimpau Ave (NS)/
Magnolia Ave (EW)
145
044
0 28
2 5
85 4
2 Rimpau Ave (NS)/
California Ave (EW)
70 8
0 3
3 Rimpau Ave (NS)/
Olympic Dr (EW)
070
080
0 0
0 0
0 0
4 Rimpau Ave (NS)/
Old Temescal Rd (EW)
070
071
0 0
0 0
0 0
5 California Ave (NS)/
Old Temescal Rd (EW)
000
003
0 1
0 0
0 3
6 Compton Ave (NS)/
Old Temescal Rd (EW)
000
000
0 4
0 0
3 0
7 Laurel Canyon Way (NS)/
Project Dwy (EW)
04 00
3 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
00 17
000
0 0
0 10
0 0
9 State St (NS)/
Ontario Ave (EW)
000
902
16 3
0 0
3 3
10 I-15 SB Ramps (NS)/
Ontario Ave (EW)
2017
10 2
11 11
11 I-15 NB Ramps (NS)/
Ontario Ave (EW)
30 13
1 26
19 13
12 California Ave (NS)/
Ontario Ave (EW) 10
02 001
0 9
10 1
11 1
13 El Sobrante Rd (NS)/
Magnolia Ave (EW)
000
000
0 37
0 0
94 0
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
2028
37 0
90 92
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW)
1 28
64 1
181
90 16
Compton Ave (NS)/
Ontario Ave (EW)
0 0 12
0 0
13 0
16 MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-14
Other Development PM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15

2.3 7.1

13.7 13.6 7.7

16.9 22.0

10.6 0.1 16.3

19.1 35.8

42.2 15.6

32.6 0.7

15.2 26.1

40.0 44.6

33.4 36.6

5.7 4.2 3.0

4.5 5.4 3.5

1.3 1.1
Vehicles Per Day (1,000's)
Legend
##
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-15
Existing Plus Project Average Daily Traffic Volumes
Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW) 104 274
487
42270115
88 825
105
544
1084
69 2
Rimpau Ave (NS)/
California Ave (EW)69511 873
1 190
3 Rimpau Ave (NS)/
Olympic Dr (EW) 31 423
17 175518181
223
14 119
70 36
59 4
Rimpau Ave (NS)/
Old Temescal Rd (EW) 34 40148 108 323 107
78 109
38 37
87 95
5 California Ave (NS)/
Old Temescal Rd (EW) 81 22723
57915
35 80
117
21 81
78 6
Compton Ave (NS)/
Old Temescal Rd (EW) 216 10815
080
7 18
60 15
37 7
7 Laurel Canyon Way (NS)/
Project Dwy (EW)24
9 350
24 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
29 12
0120
0 0
2 30
0 0
9 State St (NS)/
Ontario Ave (EW)
501
97027
56 388
2 1
960
15 10
I-15 SB Ramps (NS)/
Ontario Ave (EW)
9382266
952
469
36 1351
11 I-15 NB Ramps (NS)/
Ontario Ave (EW) 3552
36 618
545
1057
281
12 California Ave (NS)/
Ontario Ave (EW) 107 200
104
5878188
185
754
63 238
955
291
13 El Sobrante Rd (NS)/
Magnolia Ave (EW) 1518
106
10236118
59 1292
41 96
1614
178
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
11340460
1337
179
327
758
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW) 262
471
932
863
823
323
16 Compton Ave (NS)/
Ontario Ave (EW)
323
134
1141
58 277
1514
572
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-16
Existing Plus Project AM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW) 129 357
619
40324202
73 885
75 461
945
101
2 Rimpau Ave (NS)/
California Ave (EW)6386 796
13 372
3 Rimpau Ave (NS)/
Olympic Dr (EW) 32 490
10 71629109
64 8
26 9
13 128
4 Rimpau Ave (NS)/
Old Temescal Rd (EW) 23 27747 52448 102
26 123
43 34
102
117
5 California Ave (NS)/
Old Temescal Rd (EW) 118 19131 25156 26
16 83
169
60 78
50 6
Compton Ave (NS)/
Old Temescal Rd (EW) 1008518 1925
1 13
41 65
9 34
1 7
Laurel Canyon Way (NS)/
Project Dwy (EW)34
26 270
17 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
19 35
2120
0 0
3 20
0 0
9 State St (NS)/
Ontario Ave (EW)
400
74042
67 936
5 0
528
23 10
I-15 SB Ramps (NS)/
Ontario Ave (EW)
6742413
1099
430
28 846
11 I-15 NB Ramps (NS)/
Ontario Ave (EW) 3572
44 549
1049
429
285
12 California Ave (NS)/
Ontario Ave (EW) 201 207
141
118210362
249
802
163
316
570
122
13 El Sobrante Rd (NS)/
Magnolia Ave (EW) 7028
192
12544159
84 1546
75 118
1401
186
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
12300378
1628
180
333
637
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW) 148
376
987
1046
832
555
16 Compton Ave (NS)/
Ontario Ave (EW)
259
216
1298
75 275
889
258
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-17
Existing Plus Project PM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-26 Transportation
As shown in Table 2.17-5, the study intersections are forecast to operate within acceptable LOS (D or better) during the peak hours for Existing Plus Project conditions, except for the following study intersection that is projected to operate at deficient Levels of Service:
• State Street/Ontario Avenue – #9 (PM peak hour)
To mitigate the deficient intersections for Existing Plus Project conditions, the following improvements are required:
• State Street/Ontario Avenue – #9: Install a traffic signal.

Opening Year (2025) With Project
The intersection Levels of Service for Opening Year (2025) With Project conditions are shown in Table

2.17-6, Opening Year (2023) With Project Intersection Levels of Service. Opening Year (2025) With Project average daily traffic volumes are shown on Figure 2.17-18, Opening Year (2025) With Project Average Daily Traffic Volumes. Opening Year (2025) With Project morning and evening peak hour intersection turning movement volumes are shown on Figure 2.17-19, Opening Year (2025) With Project AM Peak Hour Intersection Turning Movement Volumes and Figure 2.17-20, Opening Year (2025) With Project PM Peak Hour Intersection Turning Movement Volumes.

Table 2.17-6
Opening Year (2025) With Project Intersection Levels of Service Intersection
AM
Without
Project
AM
With
Project
PM
Without
Project
PM
With
Project

1. Rimpau Avenue at Magnolia Avenue C C C D

2. Rimpau Avenue at California Avenue A A B B

3. Rimpau Avenue at Olympic Drive C C B B

4. Rimpau Avenue at Old Temescal Road C C C C

5. California Avenue at Old Temescal Road B B B B

6. Compton Avenue at Old Temescal Road B B A A

7. Laurel Canyon Way at Project Driveway A A A A

8. State Street at Bel Air Street A A A A

9. State Street at Ontario Avenue
• Traffic Signal
D
-
E
A
F
-
F
A

10. I-15 SB Ramps at Ontario Avenue C C B B

11. 1-15 NB Ramps at Ontario Avenue B B B B

12. California Avenue at Ontario Avenue C C C C

13. El Sobrante Rd. at Magnolia Avenue D D D D

14. I-15 SB Ramps at Magnolia Avenue C C D D

15. I-15 NB Ramps at Magnolia Avenue B B B B

16. Compton Avenue at Ontario Avenue C C C C
Source: Ganddini Group, Inc., Monte Olivo (Northern Portion) Traffic Analysis, June 13, 2023.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-27 Transportation
As shown in Table 2.12-17, the study intersections are projected to operate within acceptable LOS (D or better) during the peak hours for Opening Year (2025) With Project conditions, except for the following study intersection that is forecast to continue operating at deficient LOS (E or F):
• State Street/Ontario Avenue – #9 (AM & PM peak hours) The following improvement is needed to address the deficient intersections for Opening Year (2025) With Project conditions:
• State Street/Ontario Avenue – #9: Install a traffic signal.

Since this is a degradation of LOS for the already deficient intersection operations under Existing conditions, the project applicant is responsible for its fair share of fees to an applicable program for the recommended improvements. The intersection of State Street at Ontario Avenue currently satisfies the traffic signal warrant based on Existing conditions. Figure 2.17-21, Recommended Intersection Improvements, shows the recommended intersection improvements.

ROADWAY SEGMENT ANALYSIS
The road link capacity analysis is assessed based on the theoretical 24-hour average daily traffic (ADT) capacity for roadways in terms of volume over capacity ratios. The project traffic report identifies that for Opening Year (2025) With Project conditions the study roadway links are projected to function at LOS “C” or better, except for the following roadway links which would operate at LOS “D” with existing roadway width:
• Rimpau Avenue, from Magnolia Avenue to California Avenue • Magnolia Avenue, from El Sobrante Road to I-15 Southbound Ramps • Ontario Avenue, from Compton Avenue to I-15 Southbound Ramps Since the City of Corona would be improving and widening Ontario Avenue from California Avenue to State Street, no additional improvements are recommended for Ontario Avenue. The study intersections along Rimpau Avenue and Magnolia Avenue are projected to operate at an acceptable LOS “D” or better; therefore, no additional improvements are recommended for Rimpau Avenue and Magnolia Avenue.

BICYCLE FACILITIES
The proposed project would construct sidewalks on local streets to facilitate pedestrian circulation.

The City of Corona bike paths are illustrated in Figure 2.17-22, City of Corona General Plan Bike Routes.

As shown in Figure 2.17-22,there are no designated bikeways near the project site. Therefore, the construction and operation would not conflict with existing or planned pedestrian or bikeway circulation systems.

TRANSIT SERVICE
The Riverside Transit Agency (RTA) and Metro Klink Rail Service provide transit facilities for the City of Corona. Figure 2.17-23, City of Corona General Plan Transit Routes, shows existing public transit facilities and routes in the project vicinity. As shown in Figure 2.17-23 there are no transit facilities near the project site. Therefore, the construction and operation would not conflict with existing or planned transit facilities.

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD

MARLIN WAY

SMERBER RD

POPPY ST
15 15

2.1 7.4

14.4 14.5 8.1

18.0 23.1

11.4 0.1 17.2

20.7 38.0

44.8 16.7

35.0 0.7

16.2 28.6

43.5 48.4

38.6 41.0

6.0 4.5 3.2

4.8 5.6 3.4

1.4 0.8
Vehicles Per Day (1,000's)
Legend
##
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-18
Opening Year (2025) With Project Average Daily Traffic Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW) 109 290
513
45287124
93 964
111
577
1174
75 2
Rimpau Ave (NS)/
California Ave (EW)73912 928
1 195
3 Rimpau Ave (NS)/
Olympic Dr (EW) 33 450
18 186552192
236
15 126
74 38
63 4
Rimpau Ave (NS)/
Old Temescal Rd (EW) 36 42950 114 346 112
83 116
40 37
91 99
5 California Ave (NS)/
Old Temescal Rd (EW) 86 24122
58414
37 83
124
18 81
76 6
Compton Ave (NS)/
Old Temescal Rd (EW) 229 11414
080
7 13
64 11
23 7
7 Laurel Canyon Way (NS)/
Project Dwy (EW)25
1 370
4 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
2 10
5 0130
0 0
2 16
0 0
9 State St (NS)/
Ontario Ave (EW)
501
95023
56 413
2 1
1020
14 10
I-15 SB Ramps (NS)/
Ontario Ave (EW)
9952290
1014
497
41 1435
11 I-15 NB Ramps (NS)/
Ontario Ave (EW) 3772
44 657
588
1126
299
12 California Ave (NS)/
Ontario Ave (EW) 116 211
110
6181197
196
806
72 252
1016
308
13 El Sobrante Rd (NS)/
Magnolia Ave (EW) 1619
112
10838125
63 1457
43 102
1738
189
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
12020587
1504
191
372
830
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW) 278
598
1176
913
924
367
16 Compton Ave (NS)/
Ontario Ave (EW)
342
142
1214
61 294
1608
606
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-19
Opening Year (2025) With Project AM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Study Intersection
Legend
#

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

OLD TEMESCAL RD

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
16 1
Rimpau Ave (NS)/
Magnolia Ave (EW) 136 380
657
42344218
77 966
78 487
1087
111
2 Rimpau Ave (NS)/
California Ave (EW)6816 849
14 391
3 Rimpau Ave (NS)/
Olympic Dr (EW) 34 524
11 75672116
68 8
28 10
14 136
4 Rimpau Ave (NS)/
Old Temescal Rd (EW) 24 30148 55482 106
28 129
46 35
107
122
5 California Ave (NS)/
Old Temescal Rd (EW) 125 20228 27165 21
17 83
179
60 78
50 6
Compton Ave (NS)/
Old Temescal Rd (EW) 1069013 2027
1 14
26 69
5 25
1 7
Laurel Canyon Way (NS)/
Project Dwy (EW)36
4 290
3 0
8 State St (NS)/
Bel Air St/Project Dwy (EW)
1 1017
2130
0 0
3 10
0 0
9 State St (NS)/
Ontario Ave (EW)
400
72041
59 995
5 0
563
18 10
I-15 SB Ramps (NS)/
Ontario Ave (EW)
7162442
1170
456
35 901
11 I-15 NB Ramps (NS)/
Ontario Ave (EW) 3782
50 583
1120
465
308
12 California Ave (NS)/
Ontario Ave (EW) 223 217
149
125222383
264
856
183
335
613
127
13 El Sobrante Rd (NS)/
Magnolia Ave (EW) 7430
204
13347169
89 1672
80 125
1573
197
14 I-15 SB Ramps (NS)/
Magnolia Ave (EW)
13030429
1758
191
443
764
15 I-15 NB Ramps (NS)/
Magnolia Ave (EW) 158
427
1108
1108
1060
678
16 Compton Ave (NS)/
Ontario Ave (EW)
275
229
1382
80 292
949
273
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-20
Opening Year (2025) With Project PM Peak Hour Intersection Turning Movement Volumes Source: Ganddini Group, Inc.; June 13, 2023.

Site

MAGNOLIA AVE
LAU
REL
CANYON
WAY
BEL
AIR
ST

RIMPAU A
VE

OLYMPIC DR
C

AL FI O

RN AI AVE
Site

ONTARIO AVE
C
O

MPTON A
VE

STATE ST
EL

SOBRANTE
RD
1 13
14 15
2 3
4 5 6
7 8
9 12
10 11

MARLIN WAY

SMERBER RD

POPPY ST
15 15
Study Intersection
Legend
#
Community Gate
Study Roadway Segment
9 State St (NS)/
Ontario Ave (EW)
Existing Travel Lane
New Travel Lane
New Traffic Signal
16 OLD TEMESCAL RD
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-21
Recommended Intersection Improvements
Source: Ganddini Group, Inc.; June 13, 2023.

Site
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-22
City of Corona General Plan Bike Routes
Source: City of Corona; 2017.

Site
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-23
City of Corona General Plan Transit Routes
Source: City of Corona and Riverside Transportation Agency; 2019.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-34 Transportation
Mitigation Measures:

TRANS-1: Prior to map recordation, the project shall constrict or if the signal is constructed, provide a fair share payment for the installation of the traffic signal at the intersection of State Street/Ontario Avenue.
b) Conflict or be inconsistent with CEQA Guidelines Section 15064.3, subdivision (b)? Previously Approved MND Finding: The previously approved IS/MND was adopted prior to inclusion of Section 15064.3 in the CEQA Guidelines. Therefore, no Vehicle Miles Traveled (VMT) analysis was prepared.

Addendum Finding Less Than Significant Impact: The Vehicle Miles Traveled (VMT) analysis has been assessed based on the City of Corona guidelines. Using the Western Riverside Council of Governments (WRCOG) VMT Screening Tool, the project site is located within a low VMT generating Traffic Analysis Zone (TAZ) based on total VMT (28.13 VMT/SP) and Residential Home-Based VMT (14.3 VMP/PC). Appendix H of the Traffic Analysis Report shows the VMT screening results for the project site. Per the City of Corona guidelines, it is presumed to be less than significant VMT impact for projects located in low VMT generating model TAZ. These TAZs generate total daily VMT/SP that is less than the baseline level for the City/jurisdiction.

Per the secondary screening step, the proposed project land use is consistent to the City of Corona General Plan land use destination of Estate Residential (ER) of 1 to 3 dwelling units (DU) per acre. The project site is approximately 61.6 acres with 103 DU, which is 1.8 DU per acre. The proposed project site is also located within one-half mile of a bus stop and within one mile of employment and shopping destinations. Based on the screening steps, the project is anticipated to generate less than significant VMT impact and no additional improvements are recommended. c) Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined that traffic hazards that could be associated with the project were less than significant.

Addendum Finding Less Than Significant Impact: The construction and operation of the proposed project would occur on the project site and would not involve any construction or long-term operational activities on a public roadway that would increase traffic hazards.

There were some traffic safety concerns raised by local residents near the neighborhoods along State Street. Therefore, this section evaluates the following safety concerns along State Street:
• Speed limit signage and vehicular speeds
• Sight distance at project driveway
• Crash history
• Lane width reduction
• Street lighting

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-35 Transportation

SPEED LIMIT SIGNAGE AND VEHICULAR SPEED
State Street has a posted speed limit of 35 miles per hour (mph). There are currently three (3) speed limit signs posted along State Street at the following locations as previously shown in Figure 2.17-2, Existing Lane Geometry and Intersection Traffic Controls:
• Northbound direction south of Poppy Street
• Southbound direction south of Bel Air Street
• Southbound direction south of Marlin Way
A speed survey was conducted on October 25, 2022 on State Street between Smerber Road and Poppy Street (refer to Appendix I of the Traffic Analysis Report). The speed survey shows that the 85thpercentile speed on State Street is 39 miles per hour (mph). Based on the California Manual on Uniform Traffic Control Devices (CA MUTCD) guidelines, the speed limit should be rounded to the nearest 5 mph increment of the 85th-percentile speed, which would be 40 mph in this case. However, for cases in which the nearest 5 mph increment of the 85th-percentile speed would require a rounding up, then the speed limit may be rounded down to the nearest 5 mph increment below the 85th percentile speed if no further reduction is used. Therefore, the current posted speed limit of 35 mph is considered appropriate and reasonable.

Currently, there is a speed limit sign on the southbound direction south of Marlin Way while the remainder 2,500 feet of State Street from Marlin Way toward the south has no other speed limit sign.

Since the southbound direction of State Street is going downhill where vehicles tend to travel at higher speeds, it is recommended that an additional speed limit sign be installed on the southbound direction south of Smerber Road to warn the motorists to slow down and adhere to the appropriate speed.

Another option is to replace the existing speed limit sign on the southbound direction south of Marlin Way with a radar speed sign which is more visible and illuminated. This location of State Street is near the vertical crest of State Street and has a steeper grade than other segments.

SIGHT DISTANCE AT PROJECT DRIVEWAY
The sight distance analysis for the project driveway on State Street is shown in Figure 2.17-24, Sight Distance Analysis for the Project Driveway on State Street. The sight distance is evaluated based on sight distance guidelines specified in the American Association of State Highway and Transportation Officials (AASHTO) A Policy on Geometric Design of Highways and Street (7th Edition, 2018) [“AASHTO Greenbook”]. As shown in Figure 2.17-24, adequate sight distances can be provided as long as any landscaping near the northeast and southeast corners of the curb returns at the driveway on State Street does not obstruct drivers’ views. A design speed of 40 miles per hour was used based on the results of the radar speed survey (85th-percentile speed of 39 miles per hour). Based on the sight distance formulas, an intersection sight distance of 441 feet is desirable with a minimum stopping sight distance of 300 feet.

CRASH HISTORY
Based on the crash history records from the County of Riverside, there are no recent vehicular crashes along State Street from the project site to Ontario Avenue. Since State Street appears to be relatively safe with no recent vehicular crashes, there should be no major safety concerns regarding sight distance and speed factors.

PE=874.5
PE=877.0
PE=908.0 PE=895.0
PE=900.0
PE=880.0
019
PE
37 38
PE=853.7
PE=846.5
36 PE=844.0
1 2
3 28 29
30 Intersection Sight Distance
Driver's Eye (10 foot setback from curbline
extension and 3 feet right of centerline)
Legend
Stopping Sight Distance
Restricted Use Area
Major Road Design Speed (Vm = 40 MPH)
Stopping Sight Distance = 300 Feet
Corner Sight Distance (CSD) = 1.47 x Vm xTg
Time Gap For Cars ( Tg = 6.5sec. Right Turn and 7.5sec. Left Turn) CSD Right = 382 Feet
CSD Left = 441 Feet
Scale: 1" = 100'
50 100
382'
441'
300'
300'
MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
Figure 2.17-24
Sight Distance Analysis for the Project Driveway on State Street Source: Source: Ganddini Group, Inc.; January 26, 2023.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-37 Transportation

LANE WIDTH REDUCTION
The approximate widths of the existing pavement and travel lanes along State Street are listed below:
• Ontario Avenue to Poppy Street: 38 to 42 feet (Travel lanes are 19 to 21 feet) • Poppy Street to Smerber Road : 40 to 42 feet (Travel lanes are 19 to 23 feet) • Smerber Road to Marlin Way : 42 feet (Travel lanes are 19 to 21 feet) • Marlin Way to Bel Air Street: 42 feet (Travel lanes are 19 to 21 feet) The travel lane widths along State Street are between 19 feet and 23 feet which are wider than a typical travel lane that is usually between 12 and 14 feet. A wider travel lane usually results in higher vehicle speed while a narrow travel lane would likely encourage motorists to slow down. Even though lane width reduction is an effective tool to reduce vehicular speed in most cases, it is unnecessary to implement lane reduction on State Street because vehicular speed does not appear to be a safety issue due to the lack of recent vehicular crashes and there is adequate sight distance for the proposed project driveway. Other speed reduction strategies such as installing additional speed limit signs and radar speed signs should be considered prior to lane width reduction.

STREET LIGHTING
There are no street lights on State Street except for a short 400-foot segment where there are street lights on the west side of State Street from Ontario Avenue to the northern boundary of the shopping center located west of State Street. Therefore, it is dark along most of State Street during the evenings.

The County may consider installing new street lighting that would improve nighttime visibility, however, this may result in increased vehicular speeds on State Street at night.

Mitigation Measures:

TRANS-2: The following circulation improvements are recommended to enhance safe vehicle within the project area:
• Prior to issuance of first Certificate of Occupancy, Laurel Canyon Way, adjacent to the project boundary, shall be constructed at its ultimate half-section width, including landscaping and parkway improvements in conjunction with development per City standards.
• Prior to issuance of the first Certificate of Occupancy, the project shall provide a secondary access road through the southern portion of the site which would create a stop-controlled secondary access driveway at State Street for project residents only.
• All roadway design, traffic signing and striping, and traffic control improvements relating to the proposed project should be constructed in accordance with applicable engineering standards and to the satisfaction of the City of Corona and applicable portions to the County of Riverside.
• Prior to issuance of first Certificate of Occupancy, site-adjacent roadways shall be constructed or repaired at their ultimate half-section width, including landscaping and parkway improvements in conjunction with development, or as otherwise required by the City of Corona.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.17-38 Transportation
• Onsite traffic signing and stripping plans shall be submitted to City of Corona for approval in conjunction with detailed construction plans for the project. • The final grading, landscaping, and street improvement plans should demonstrate that sight distance standards are met in accordance with applicable City of Corona, County of Riverside and California Department of Transportation sight distance standards.
• The northeast and southeast corners of the project site access driveway at State Street shall be limited to low growing ground cover and/or hardscape to ensure that overgrown landscape would not obstruct driver views along State Street. The final Improvement Plans for the State Street project driveway access shall be approved by the City of Corona and County of Riverside. d) Result in inadequate emergency access?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND determined that potential emergency impacts would be less than significant.

Addendum Finding Less Than Significant Impact: The Proposed Project Modifications would not increase impacts associated with conflicts with adopted emergency plans. The Proposed Project Modifications to provide proposed circulation access would not impede adequate emergency access to areas offsite from the project. Temporary construction activities associated with the project could result in temporary partial lane closures to access the project site. The project would be required to coordinate with the City of Corona to ensure adequate emergency access is maintained at all times.

With compliance with the City of Corona Traffic Control requirements, potential emergency access impacts would be less than significant. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of potential traffic hazard impacts.

SUMMARY OF FINDINGS FOR TRANSPORTATION
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.18-1 Tribal Cultural Resources

2.18 Tribal Cultural Resources
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public
Resources Code Section 21074 as either a site,
feature, place, cultural landscape that is
geographically defined in terms of the size and scope
of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that
is:

1) Listed or eligible for listing in the California
Register of Historical Resources, or in a local
register of historical resources as defined in
Public Resources Code Section 5020.1(k), or
2) A resource determined by the lead agency, in its
discretion and supported by substantial
evidence, to be significant pursuant to criteria set
forth in subdivision (c) of Public Resources Code
Section 5024.1. In applying the criteria set forth
in subdivision (c) of Public Resource Code Section
5024.1, the lead agency shall consider the
significance of the resource to a California Native
American tribe.

ENVIRONMENTAL ANALYSIS

PROJECT IMPACTS
a) Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code Section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is:
1) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code Section 5020.1(k)?
2) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1. In applying the criteria set forth in subdivision (c) of Public Resource Code Section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.18-2 Tribal Cultural Resources
Previously Approved MND Finding Less Than Significant Impact With Mitigation Incorporated: The previously approved IS/MND evaluated impacts to tribal resources as part of the evaluation of potential impacts to cultural resources and determined potential impacts to be less than significant.

Addendum Finding Less Than Significant Impact With Mitigation Incorporated: The area where the Proposed Project Modifications would be implemented has been rough graded and no Native American cultural resources were encountered. It would be highly unlikely that implementation of the Proposed Project Modifications would encounter unknown cultural resources. On the side of caution and in the remote event unknown Native American cultural resources are encountered, Mitigation Measures CR-16, CR-17 and CR-18, described in Section

1.0, Introduction, are recommended. With implementation of Mitigation Measures CR-16, CR17, and CR-18 potential impacts to unknown Native American cultural resources would be less than significant. Compared to the previous adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of impacts to unknown Native American cultural resources.

Mitigation Measures: Mitigation Measures CR-16, CR-17 and CR-18 are required.

SUMMARY OF FINDINGS FOR TRIBAL CULTURAL RESOURCES
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.19-1 Utilities and Service Systems

2.19 Utilities and Service Systems
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Require or result in the relocation or construction of new or expanded water, or wastewater treatment or
storm water drainage, electric power, natural gas, or
telecommunications facilities, the construction or
relocation of which could cause significant
environmental effects?
b. Have sufficient water supplies available to serve the project and reasonably foreseeable future
development during normal, dry and multiple dry
years?
c. Result in a determination by the wastewater
treatment provider which serves or may serve the
project that it has adequate capacity to serve the
project’s projected demand in addition to the
provider’s existing commitments?
d. Generate solid waste in excess of State or local
standards, or in excess of the capacity of local
infrastructure, or otherwise impair the attainment of
solid waste reduction goals?
e. Comply with federal, state, and local management
and reduction statutes and regulations related to
solid waste?

ENVIRONMENTAL ANALYSIS
a) Require or result in the relocation or construction of new or expanded water, or wastewater treatment or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would have no impact on utility services.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not require the relocation or construction of new or expanded utility services beyond what was required for the original project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.19-2 Utilities and Service Systems
b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would have no adverse impacts on utility services.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for water supplies to serve the project and the foreseeable future development during normal, dry, and multiple dry years beyond the level of demand generated from the original project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts.
c) Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would have no adverse impacts on utility services.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would not increase the number of residential units approved for the project and would not increase the demand for wastewater treatment beyond the level of demand generated from the original project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts.
d) Generate solid waste in excess of State or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would not generate solid waste in excess of State or local standards.

Addendum Finding No Impact: Implementation of the Proposed Project Modifications would retain the same dwelling unit count and would not increase in demand for solid waste disposal services beyond the level of demand for the original project. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts. e) Comply with federal, state, and local management and reduction statutes and regulations related to solid waste?
Previously Approved MND Finding No Impact: The previously approved IS/MND determined the original project would not conflict with federal, state, and local management and reduction statutes and regulations related to solid waste.

Addendum Finding No Impact: Like the original project, any solid waste generated by the Proposed Project Modifications would be hauled from the site, diverted, and recycled, in accordance with the California Integrated Waste Management Act and other local management and reduction statutes related to solid waste. Compared to the previously adopted IS/MND, the Proposed Project Modifications would result in the same level of impacts.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.19-3 Utilities and Service Systems

SUMMARY OF FINDINGS FOR UTILITIES AND SERVICE SYSTEMS
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.19-4 Utilities and Service Systems
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MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.20-1 Wildfire

2.20 Wildfire
If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Substantially impair an adopted emergency response
plan or emergency evacuation plan?
b. Due to slope, prevailing winds, and other factors,
exacerbate wildfire risks, and thereby expose project
occupants to, pollutant concentrations from a wildfire
or the uncontrolled spread of a wildfire?
c. Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency
water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment?
d. Expose people or structures to significant risks,
including downslope or downstream flooding or
landslides, as a result of runoff, post-fire slope
instability, or drainage changes?

ENVIRONMENTAL ANALYSIS
A wildland fire is a non-structural fire that occurs in vegetative fuels. Wildland fires can occur in undeveloped areas and spread to urban areas where the landscape and structures are not designed and maintained to be ignition resistant. The potential for wildland fires represents a hazard where development is adjacent to open space or designated Fire Hazard Safety Zones. Subsequent to approval of the previously approved MND, the California Department of Forestry and Fire Protection Fire Severity Zone Maps have been updated. According to the California Department of Forestry and Fire Protection, portions of the project site are adjacent to Moderate Fire Hazard and State Responsibility areas.
a) Substantially impair an adopted emergency response plan or emergency evacuation plan?
Previously Approved MND No Impact: The previously adopted IS/MND determined the original project site was not in a Fire Hazard Area and would not expose people or structures to significant wildland fire risks or impair an adopted emergency response plan or emergency evacuation plan.

Addendum Finding No Impact: In the event an emergency response plan or evaluation plan is required to be implemented, the City of Corona Police Department would be in charge of evacuating neighborhoods in the event of a fire that threatens homes. These evacuations would be decided within the Incident Command Structure in consultation with the fire department, other law enforcement, public works, and local government liaisons in order to establish when and where they would occur.

In the event of an emergency, residents would be directed to specific evacuation routes to avoid conflicts with emergency response plans. With implementation of the Incident Command Structure, the proposed project would not substantially impair an adopted emergency response plan or emergency

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.20-2 Wildfire
evacuation plans and potential impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of fire hazard impacts.
b) Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and thereby expose project occupants to, pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire?
Previously Approved MND Finding No Impact: The previously adopted IS/MND determined the original project site was not in a Fire Hazard Area.

Addendum Finding No Impact: Topography influences the movement of air and the direction of a fire course. Additionally, wind events magnify the risks of wildfire and would have the potential to expose inhabitants to elevated pollutant concentrations. To minimize project contiguity to wildland slope areas that could act as conduit for wildland fire, the project plans have been modified to square off Lots 17-21 to remove the common area behind homes and incorporate a radiant heat wall behind Lots 16-29. Additionally, the CC&R’s would include a prohibition of the installation of combustible materials in the 30-foot zone width adjacent to the heat wall within Lots 16-29. Additionally, the proposed project would have surrounding roadways and driveways which would also act as fire breaks. Therefore, the proposed project would not exacerbate wildfire risks, and thereby expose project occupants to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire and potential impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of fire hazard impacts.
c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment? Previously Approved MND Finding No Impact: The previously adopted IS/MND determined the original project site was not in a Fire Hazard Area and would not expose people or structures to significant wildland fire risks.

Addendum Finding No Impact: The project was initially graded which included the removal of all vegetation. The proposed fuel modification program would remove common area vegetation behind homes, provide radiant heat walls and prohibit the installation of combustible materials in a 30-foot zone. Implementation of these fuel modification measures would not result in any adverse temporary impacts or ongoing impacts to the environment. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of fire hazard impacts.
d) Expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes?
Previously Approved MND Finding No Impact: The previously adopted IS/MND determined the original project site was not in a Fire Hazard Area and would not expose people or structures to significant wildland fire risks.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.20-3 Wildfire
Addendum Finding No Impact: Landslides, including mud and debris flows can be triggered by erosion and downslope runoff caused by rain following a fire. The project site is not in an area that is subject to landslides or downstream flooding that would increase the risk for post-fire slope instability, or drainage change impacts and potential impacts would be less than significant. Compared to the previously adopted IS/MND, implementation of the Proposed Project Modifications would result in the same level of fire hazard impacts.

SUMMARY OF FINDINGS FOR WILDFIRE
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.20-4 Wildfire
This page intentionally left blank.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.21-1 Mandatory Findings of Significance

2.21 Mandatory Findings of Significance
Would the project:

New
Potentially
Significant
Impact
New
Mitigation
is Required
No New
Impact/
No Impact
Reduced
Impact
a. Have the potential to substantially degrade the
quality of the environment, substantially reduce the
habitat of a fish or wildlife species, cause a fish or
wildlife population to drop below self-sustaining
levels, threaten to eliminate a plant or animal
community, substantially reduce the number or
restrict the range of a rare or endangered plant or
animal or eliminate important examples of the major
periods of California history or prehistory?
b. Have impacts that are individually limited, but
cumulatively considerable? (“Cumulatively
considerable” means that the incremental effects of a
project are considerable when viewed in connection
with the effects of past projects, the effects of other current projects, and the effects of probable future
projects)?
c. Have environmental effects which will cause
substantial adverse effects on human beings, either
directly or indirectly?

ENVIRONMENTAL ANALYSIS
a) Have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND identified that the original project would have less than significant impacts in regard to the potential for the project to degrade the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory.

Addendum Finding Less Than Significant Impact: Implementation of the Proposed Project Modifications would not change the biological analysis and conclusions included in the previously adopted IS/MND. Additionally, the Proposed Project Modifications would not result in additional significant impacts to cultural resources. No new impacts or intensification of previously identified impacts would occur with implementation of the Proposed Project Modifications.

MONTEOLIVO PROJECT TENTATIVE TRACT MAP 37895
Initial Study/Mitigated Negative Declaration Addendum
August 2023 2.21-2 Mandatory Findings of Significance
b) Have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)? Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND identified the original project would not have adverse cumulative impacts.

Addendum Finding Less Than Significant Impact: Although the Proposed Project Modifications would provide a new private gated access driveway at Laurel Canyon Way and would replace the previously planned recreation center with open space park area, the general configuration of the subdivision and the overall number of dwelling units remains the same. Since the most intense shortterm construction impacts entailing rough grading within the original project boundaries have already occurred, the construction impacts associated with the Proposed Project Modifications are substantially less. For this reason, no new or greater cumulative impacts would occur from the Proposed Project Modifications. Since there is no change in land use or intensity of development, the long-term operational significant impacts associated with the Proposed Project Modifications would remain consistent with the cumulative analysis provided in the previously approved IS/MND and there would be no changes to the analysis or conclusions regarding cumulative impacts. c) Have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly?
Previously Approved MND Finding Less Than Significant Impact: The previously approved IS/MND identified that the original project would not have substantial adverse impacts on human beings.

Addendum Finding Less Than Significant Impact: The changes associated with the Proposed Project Modifications are minor. No new impacts or more severe impacts to human beings, either directly or indirectly, would occur as a result of the implementation of the Proposed Project Modifications.

SUMMARY OF MANDATORY FINDINGS OF SIGNIFICANCE
In accordance with the analysis above, and pursuant to Sections 15162 and 15164 of the State CEQA Guidelines, the City of Corona has determined that:
• The Proposed Project Modifications do not result in substantial changes that would require major revisions to the previously adopted IS/MND due to new or substantially more severe significant environmental effects than previously analyzed. • No substantial changes in circumstances have occurred that would result in new or more severe significant environmental impacts than previously analyzed. • No new information of substantial importance as described in Section 15162 (a)(3) has been identified that would require major revisions to the analysis or conclusions presented in the previously adopted IS/MND.

Link to Addendum Mitigated Negative Declaration:

Microsoft Word - Monteolivo Addendum ISMND_20230815

TTM 37895
MND Addendum | Mitigation Monitoring Plan
TENTATIVE TRACT MAP 37895

MITIGATION MONITORING AND REPORTING PROGRAM
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date

GEOLOGIC
GEO-1 Prior to construction, loose and perched boulders shall be removed from the face of the slope.

Condition of
Approval
Field Verification During Grading &
Construction
Activities
Planning &
Development
Dept,
Development
Services Division
GEO-2 During earthwork construction, the applicant shall adhere to the grading recommendations presented in
the Preliminary Geotechnical Investigation prepared
by Geocon Inland Empire Inc. (2006).

Condition of
Approval
Field Verification During Grading &
Construction
Activities
Planning &
Development
Dept,
Development
Services Division
GEO-19 The paleontologist shall salvage all fossils in the area and provide additional field staff in accordance with
modern paleontological techniques.

Condition of
Approval
Field Verification During Grading &
Construction
Activities
Planning &
Development
Dept, Planning
Division
GEO-20 All fossils collected during the project will be prepared to a reasonable point of identification. Excess
sediment or matrix will be removed from the
specimens to reduce the bulk and cost of storage.

Itemized catalogs of all material collected and
identified will be provided to the museum repository
along with the specimens.

Condition of
Approval
Submittal of
documentation
During Grading &
Construction
Activities
Planning &
Development
Dept, Planning
Division

TTM 37895
MND Addendum | Mitigation Monitoring Plan
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date
GEO-21 A report prepared by the archeologist documenting the results of the monitoring and salvage activities and the significance of the fossils shall be prepared.

Condition of
Approval
Submittal of
report
Upon completion
of grading
activities.

Planning &
Development
Dept, Planning
Division

AIR QUALITY
AIR-3 During site preparation and grading activities, the applicant or its contractor shall control airborne dust and PM10/PM2.5 by watering all active areas at least
three times per day, as dictated by local soil and wind conditions. If visible emissions of fugitive dust persist beyond a distance of 200 feet from the boundary of
the construction site, all feasible measures shall be
implemented to eliminate potential nuisance
conditions at offsite receptors.

Condition of
Approval
Field Verification During Grading &
Construction
Activities
Planning &
Development
Dept,
Development
Services Division

TRANSPORTATION
TRANS-1
*NEW*
Prior to map recordation, the project shall constrict or if the signal is constructed, provide a fair share
payment for the installation of the traffic signal at the intersection of State Street/Ontario Avenue.

Condition of
Approval
Field Verification Prior to map
recordation
Public Works
Dept, Traffic
Division
TRANS-2
*NEW*
The following circulation improvements are
recommended to enhance safe vehicle within the
project area:
• Prior to issuance of first Certificate of
Occupancy, Laurel Canyon Way, adjacent to
the project boundary, shall be constructed at its
ultimate half-section width, including
landscaping and parkway improvements in
conjunction with development per City
standards.
• Prior to map recordation, the applicant shall
obtain approval of a secondary access road
Condition of
Approval
Field Verification
• Prior to
issuance of first
Certificate of
Occupancy
• Prior to map
recordation
Public Works
Dept, Traffic
Division

TTM 37895
MND Addendum | Mitigation Monitoring Plan
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date
(Shadow Valley Drive) from the County of
Riverside.
• Prior to issuance of a building permit, the
project shall provide a secondary access road
(Shadow Valley Drive) through the southern
portion of the site which would create a stopcontrolled secondary access driveway at State Street for project residents only.
• All roadway design, traffic signing and striping,
and traffic control improvements relating to the
proposed project should be constructed in
accordance with applicable engineering
standards and to the satisfaction of the City of
Corona and applicable portions to the County of
Riverside.
• Prior to issuance of first Certificate of
Occupancy, site-adjacent roadways shall be
constructed or repaired at their ultimate halfsection width, including landscaping and parkway improvements in conjunction with
development, or as otherwise required by the
City of Corona.
• Onsite traffic signing and stripping plans shall
be submitted to City of Corona for approval in
conjunction with detailed construction plans for
the project.
• The final grading, landscaping, and street
improvement plans should demonstrate that
sight distance standards are met in accordance
with applicable City of Corona, County of
Riverside and California Department of
Transportation sight distance standards.
• Prior to
issuance of a
building permit
• Prior to
issuance of first
Certificate of
Occupancy
• Prior to
issuance of first
Certificate of
Occupancy
• Prior to the
construction of
the streets
•Prior to
issuance of a
building permit

TTM 37895
MND Addendum | Mitigation Monitoring Plan
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date
• The northeast and southeast corners of the
project site access driveway at State Street
shall be limited to low growing ground cover
and/or hardscape to ensure that overgrown
landscape would not obstruct driver views
along State Street. The final Improvement
Plans for the State Street project driveway
access shall be approved by the City of Corona
and County of Riverside.
•Prior to
issuance of a
building permit
T-4 Prior to the issuance of the first Certificate of
Occupancy, the northbound shared left/through/right
turn lane of Compton Avenue at Old Temescal Road
shall be widened and/or restriped to provide an
exclusive left-turn lane and a shared through-right turn lane.

Condition of
Approval
Field Verification
T-5 Prior to the recordation of TTM 36533, the applicant shall pay the fair share cost of 9.55 percent towards
the construction of a two-phased signal traffic signal at the intersection of Rimpau Avenue at Old Temescal
Road. In addition, the northbound shared left-through
lane shall be restriped to provide an exclusive left-turn lane and the southbound shared left-through lane
shall be restriped to provide an exclusive left turn lane.

Condition of
Approval
Field Verification

BIOLOGICAL RESOURCES
BIO-6 A pre-construction survey for avian nests within seven (7) days of vegetation clearance or grading of the
project site, if grading permits are to be issued during the nesting season, March 1st through September 1st.

Condition of
Approval
At time of plan
check
BIO-7 If passerine birds are found to be nesting, a 250-foot buffer is required around the nesting site, in which the vegetation cannot be disturbed. In the event that the
nest is for a raptor, the buffer shall be expanded to
Condition of
Approval
At time of plan
check

TTM 37895
MND Addendum | Mitigation Monitoring Plan
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date
500-feet. If multiple nests are found, grading and
grubbing of the project site shall be postponed.

BIO-8 A qualified biologist shall closely monitor the project site and nests until it is determined that the nests are no longer active.

Condition of
Approval
At time of plan
check
BIO-9 Prior to the issuance of a grading permit, applicable Section 404 permit from the U.S. Army Corps of
Engineers and a Streambed Alteration Permit
pursuant to Fish and Wildlife Code 1602, and Section
401 Water Quality Certification from the Regional
Water Quality shall be obtained.

Condition of
Approval
At time of plan
check
BIO-10 A Water Quality Management Plan and SWPPP shall
be prepared and implement BMPs (Best Management
Practices) that will prevent habitat degradation caused by runoff within the adjacent conservation area and
pollutants from vehicles and paved surfaces are
organic compounds, metals, and oil/grease; from pet
waste are bacteria/virus pathogens; and from
landscaping are sediment, nutrients, oxygendemanding substances, and herbicides/pesticides.

Condition of
Approval
At time of plan
check
BIO-11 Any lighting used within proximity of the conservation area will be shielded and directed away from the
conservation area.

Condition of
Approval
At time of plan
check
BIO-12 Landscape plans prepared for the project shall not include invasive species identified in MSHCP Table 6-

2. Condition of
Approval
At time of plan
check
BIO-13 The proposed project shall incorporate barriers, as necessary, to minimize unauthorized public access,
domestic animal predation, illegal trespass, and
dumping in the MSHCP Conservation Area. Such
barriers may include native landscaping,
Condition of
Approval
At time of plan
check

TTM 37895
MND Addendum | Mitigation Monitoring Plan
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date
rocks/boulders, fencing, walls, signage, and/or other
appropriate mechanisms.

BIO-14 Manufactured slopes associated with proposed site development shall not extend into the MSHCP
Conservation Area.

Condition of
Approval
At time of plan
check

CULTURAL RESOURCES
CR-15 If human remains are encountered, California Health and Safety Code Section 7050.5 states that no further
disturbance shall occur until the Riverside County
Coroner has made the necessary findings as to origin.

Further, pursuant to California Public Resources Code
Section 5097.98(b) remains shall be left in place and
free from disturbance until a final decision as to the
treatment and disposition has been made. If the
Riverside County Coroner determines the remains to
be Native American, the Native American Heritage
Commission must be contacted within 24 hours. The
Native American Heritage Commission must then
immediately identify the “most likely descendant(s)”
of receiving notification of discovery. The most likely descendant(s) shall then make recommendations
within 48 hours and engage in consultations
concerning the treatment of the remains as provided
in Public Resources Code 5097.98.

Condition of
Approval
Field Verification
CR-16 The landowner shall relinquish ownership of all
cultural resources, including sacred items, burial
goods and all archaeological artifacts that are found
on the project area to the appropriate Tribe for proper treatment and disposition.

Condition of
Approval
Field Verification
CR-17 All sacred sites, should they be encountered within the project area, shall be avoided and preserved as the
preferred mitigation, if feasible.

Condition of
Approval
Field Verification

TTM 37895
MND Addendum | Mitigation Monitoring Plan
No. Mitigation Measures Implementation
Action
Method of
Verification
Timing of
Verification
Responsible
Person
Verification
Date
CR-18 If inadvertent discoveries of subsurface
archaeological/cultural resources are discovered
during grading, the Developer shall retain a qualified
archaeologist to assess the significance of such
resources. Pursuant to California Public Resources
Code Section 21083.2(b) avoidance is the preferred
method of preservation for archaeological resources.

The archaeologist shall be responsible for determining
the significance of the cultural resource and mitigation for such resources. The archaeologist shall make the
determination based on the provisions of the
California Environmental Quality Act with respect to
archaeological resources and shall take into account
the religious beliefs, customs, and practices of the
Tribe(s). If large fossil specimens are encountered
during additional grading, the applicant shall
immediately cease operation and retain a qualified
and trained paleontologist.

Condition of
Approval
Field Verification

DRAFT MINUTES - June 23, 2025
City of Corona - Planning & Housing Commission Page 1
City of Corona
Planning & Housing Commission Minutes
Monday, June 23, 2025, 6:00 p.m.

Council Chambers
400 S. Vicentia Avenue
Corona, CA 92882
Commission Present: Matt Woody, Marie Vernon, Craig Siqueland, Sarah Longwell, Karen Alexander
_____________________________________________________________________

1. PLEDGE OF ALLEGIANCE
Commissioner Vernon led the Pledge of Allegiance.

2. CALL TO ORDER
Chair Longwell called the meeting to order.

3. MEETING MINUTES

3.1 MINUTES - May 28, 2025
These minutes were approved.

Moved by: Karen Alexander
Seconded by: Marie Vernon
Aye (5): Matt Woody, Marie Vernon, Craig Siqueland, Sarah Longwell, and Karen Alexander
Motion APPROVED (5 to 0)

4. COMMUNICATIONS FROM THE PUBLIC
None.

5. CONSENT CALENDAR
None.

6. PUBLIC HEARINGS

6.1 TTM 37895 (CONTINUED)
Sandra Vanian, Planning Manager, reviewed the staff report and exhibits for TTM 37895.

DRAFT MINUTES - June 23, 2025
City of Corona - Planning & Housing Commission Page 2
Peter Carlson of Carlson Strategic Land Solutions, representative for the applicant, addressed the Commission to provide a summary of the public outreach conducted for the project. Mr. Carlson reviewed the current site conditions, the traffic study and future plans to correct outstanding issues; and he commented on the City's Regional Housing Needs Allocation (RHNA) and the City's Housing Element related projects.

Commissioners had various questions and comments regarding the project's relation to the adjacent Riverside County project, street striping, lighting, and traffic calming measures. Staff provided clarification.

Kevin Tsang, Division Manager for the Riverside County Transportation Department, provided clarification on comments related to the County side of the proposed site plan.

Joanne Coletta, Planning and Development Director, provided comments on City areas annexed from Riverside County.

Chair Longwell opened the public hearing.

Elissa Barela, resident, spoke in opposition of the project's traffic plans.

Julie Trapp, resident, spoke in opposition of this project, and commented on the history of the proposed development.

Chris Salazar, resident, spoke in opposition of this project, and commented on the history of the proposed development.

Joe Morgan, resident, provided comments on the project's relation to the adjacent proposed County project.

Jim Gore, representing Vulcan Materials Company, expressed an intent to work with applicant to address concerns related to their proximity to the project site.

Sallie Ruiz, resident, spoke in opposition of this project, noting safety concerns on Old Temescal Canyon Road.

Shahab Khair, resident, spoke in opposition of this project, noting traffic concerns on Old Temescal Canyon Road.

Dale Worthington, resident, expressed traffic concerns on State Street, and provided an alternative.

Sanika Joshi, resident, expressed concerns with increased traffic and a lack of public outreach by applicant.

Chris McHenry, resident, spoke in opposition of this project, noting traffic concerns.

Sarah Mostafa, resident, spoke in favor of the proposed safety measures and of opening a second egress for the existing neighborhoods.

Chair Longwell closed the public hearing.

The Commission discussed the speakers' concerns and considered additional input provided by staff and the applicant, as well comments provided by Mr.

Tsang. Discussion focused on traffic related safety issues, and the Commission

DRAFT MINUTES - June 23, 2025
City of Corona - Planning & Housing Commission Page 3
reached a consensus that the application as presented should be denied. The Commission thanked staff for their hard work and audience for their participation.

Moved by: Matt Woody
Seconded by: Karen Alexander
That the Planning and Housing Commission DENY approval of TTM 37895.

Aye (5): Matt Woody, Marie Vernon, Craig Siqueland, Sarah Longwell, and Karen Alexander
Motion APPROVED (5 to 0)

7. WRITTEN COMMUNICATIONS
None.

8. ADMINISTRATIVE REPORTS
None.

9. COMMISSIONERS' REPORTS AND COMMENTS

10. FUTURE AGENDA ITEMS
Future agenda items are yet to be determined.

11. ADJOURNMENT
Chair Longwell adjourned the meeting at 8:29 p.m. to the Planning and Housing Commission meeting of Monday, July 7, 2025, commencing at 6:00 p.m. in the City Hall Council Chambers.

2801 T STREET
SACRAMENTO, CA 95816
TEL 916.382.4377
FAX 916.382.4380
WWW. HTHGLAW. COM
July 30, 2025

VIA ELECTRONIC MAIL ONLY
Mayor Jim Steiner
City of Corona
400 South Vicentia Avenue
Corona, CA 92882
[email protected]
Re: Appeal; TTM 37895
Dear Mayor Steiner and Honorable Members of the City Council, On behalf of Vulcan Materials Company (“Vulcan”) and AVMGH Corona (“AVMGH”), we write concerning the above-referenced appeal (“Appeal”), scheduled for public hearing on August 6, 2025. The Appeal seeks the City Council’s approval to tentatively subdivide 103 single family residential lots on

61.6 acres located on the west and east sides of Laurel Canyon Way, south of Sherborn Street and north of Shadow Valley Drive (“Project”).

The Project site is located immediately west of Vulcan’s Corona Quarry. Vulcan leases certain lands from AVMGH for operation of the quarry’s processing plants. Together, Vulcan’s fee owned and leased lands constitute the “Quarry.” Vulcan and its predecessors have operated that Quarry as a regionally important aggregate and construction materials source since the 1940s. The Quarry has certain vested operating rights under both the federal and state constitutions, and as further articulated by Development Agreement #2014-0256761, SMP12-001M, and associated reclamation plan. These rights include, but are not limited to, the following:
• The right to engage in surface mining operations on more than 260 acres; • The right to extract more than 400 million tons of material from the Quarry site; • The right to produce up to 5 million tons of aggregate annually; • The right to produce asphaltic and ready-mix concrete; • The right to transport, process, store, and loadout by truck and rail aggregate and other construction materials;
• The right to drill, blast, excavate, doze, and use of other similar methods to recover mineral resources from the Quarry site;
• The right to operate 24 hours per day, seven days per week, including Quarry blasting between 12:00 PM and 4:00 PM, Monday through Friday; and

Mayor Jim Steiner
Appeal, TTM 37895
July 30, 2025
2 • The right to engage in all ancillary and related uses to operate a surface mining operation and construction materials production and sale facility.

While the current entitlements allow for Quarry operations to continue until 2112, constitutionally protected vested mining rights allow for Quarry operations to continue until the complete recovery of mineral reserves. (See Hansen Bros. Enters. v. Bd. of Supervisors (1996) 12 Cal. 4th 533.) In addition, there are a number of other industrial uses, including additional mining and construction materials facilities within the Temescal Valley immediately surrounding the Project site that provide significant quantities of construction materials to the western Riverside County market.

The Project site will be located less than ½ mile away from these industrial uses. Vulcan and AVMGH are in favor of development. The Project must, however, include protections for existing industrial uses. To that end, Vulcan and other operators met with the Project Applicant on multiple occasions following the City Planning and Housing Commission’s recommendation to deny the Project.

The parties discussed potential solutions, through conditions of approval, recorded notices, and other items, which would reduce complaints and unwarranted investigations undertaken by the City.

Unfortunately, the parties could not reach agreement on a solution that would adequately ensure ongoing land use compatibility. Accordingly, Vulcan and AVMGH must respectfully oppose the Project.

We thank you for your consideration of this letter. If you have any questions, please do not hesitate to contact me at (916) 228-4221 or by email at [email protected].

Very truly yours,

HARRISON, TEMBLADOR, HUNGERFORD & GUERNSEY
By
Adam Guernsey, Esq.
cc: [Via Email]
Vice Mayor Jacque Casillas
Council Member Tony Daddario
Council Member Tom Richins
Council Member Wes Speake
Council Member Chad Willardson
Joanne Coletta, Planning & Development Director
Sandra Vanian, Senior Planner
Jim Gore, Vulcan Materials Company

Mayor Jim Steiner
Appeal, TTM 37895
July 30, 2025
3 Bruce Hohn, AVMGH Corona
Mark D. Harrison, Esq., Harrison Temblador Hungerford & Guernsey LLP

ROCK • SAND • BASE MATERIALS

READY MIX CONCRETE
200 S. Main Suite 200 Corona, CA 92882
P.O. Box 1659 Corona, CA 92878-1659
(800) 834-7557 Page 1
July 30, 2025

VIA ELECTRONIC MAIL ONLY
Mayor Jim Steiner
City of Corona
400 South Vicentia Avenue
Corona, CA 92882
[email protected]
Subject: Appeal of Tentative Tract Map 37895
Dear Mayor Steiner and Honorable Members of the City Council, Robertson’s Ready Mix (Robertson’s) is writing regarding the above-referenced appeal (“Appeal”), scheduled for public hearing on August 6, 2025. The Appeal requests the City Council’s approval of Tentative Tract Map 37895 to tentatively subdivide 103 single family residential lots on 61.6 acres located on the west and east sides of Laurel Canyon Way, south of Sherborn Street and north of Shadow Valley Drive (“Project”).

Robertson’s expresses opposition of the Project and recommends the Planning and Housing Commission’s denial of the Project be upheld.

Robertson’s is generally in favor of development and recognizes the need for housing in Southern California. We also believe in development which recognizes and does not infringe on existing uses of adjacent landowners.

Roberston’s again expresses concern that the Project has strong land use incompatibility with pre-existing mining, asphalt production, and ready-mix production uses occurring to the immediate North and Northeast of the proposed project. These operations have existed for decades and have vested rights protected under both state and federal laws. These facilities, including operations run by Robertson’s, provide critical construction materials and resources needed to build and maintain infrastructure in the City of Corona and Riverside County.

We also note that the MOU Agreement with Sherborn LLC (a Robertson’s company) referenced on the Project’s development plans requires the Applicant to “obtain written permission from Sherborn prior to commencing each stage of work, as well as their express approval of conditions.” To date, the Applicant has not obtained Robertson’s written permission.

ROCK • SAND • BASE MATERIALS

READY MIX CONCRETE
200 S. Main Suite 200 Corona, CA 92882
P.O. Box 1659 Corona, CA 92878-1659
(800) 834-7557 Page 2
Robertson’s has met with the Project Applicant following the Planning and Housing Commission’s denial. We discussed potential solutions, through conditions of approval, recorded notices, and other items, which would reduce complaints and unwarranted investigations undertaken by the City. The Project Applicant has not been willing to implement solutions that would insure ongoing land use compatibility with adjacent property owners and their preexisting uses. Therefore, Robertson’s opposes the Project.

We thank you for consideration of this mater and request denial of the Project. Please do not hesitate to contact me to discuss further at (951) 870-1776 or [email protected].

Respectfully,
Bill Taylor
Robertson’s Ready Mix
Resource Development Manager
CC (via e-mail):

Vice Mayor Jacque Casillas Council Member Tony Daddario Council Member Tom Richins
Council Member Wes Speake
Council Member Chad Willardson
Joanne Coletta, Planning & Development Director
Sandra Vanian, Senior Planner

MARIAC\16000.20004\10313212.6
DATE: 08/06/2024
TO: Honorable Mayor and City Council Members
FROM: Public Works Department
2025-317

REQUEST FOR CITY COUNCIL ACTION
SUBJECT:

PUBLIC HEARING FOR RESOLUTION OF NECESSITY TO ACQUIRE, BY EMINENT DOMAIN, A FEE INTEREST IN A PORTION OF PROPERTY AT 3298 SKYLINE DRIVE (APN 112-320-019) FOR THE CONTINUED USE OF SKYLINE DRIVE AND

CONTINUED PUBLIC ACCESS TO THE SKYLINE TRAIL
EXECUTIVE SUMMARY:

This staff report asks the City Council to adopt a resolution declaring the necessity of acquiring, by eminent domain, a fee interest in a portion of property located at 3298 Skyline Drive and identified as Assessor Parcel No. 112-320-019 for continued vehicular, bicycle, and pedestrian public right-of-way purposes.

RECOMMENDED ACTION:

That the City Council:
a. Conduct a public hearing to consider the adoption of a resolution of necessity, including providing all parties interested in the affected property and their attorneys, or their representatives, an opportunity to be heard on the issues relevant to the Resolution of Necessity;
b. Make the following findings as hereinafter described in this report:

MARIAC\16000.20004\10313212.6
i) The public interest and necessity require the proposed Project; ii) The Project is planned or located in a manner that will be most compatible with the greatest public good and the least private injury; iii) The real property to be acquired is necessary for the Project; and iv) The offer of just compensation has been made to the property owner. c. Adopt Resolution No. 2025-091, declaring the necessity of acquisition, by eminent domain, of a fee interest in a portion of real property located at 3298 Skyline Drive, and more particularly described as Assessor Parcel No. 112-320-019, for the continued use of Skyline Drive for vehicular, bicycle and pedestrian public right-ofway purposes and continued bicycle and pedestrian public access to the Skyline Trail.

BACKGROUND & HISTORY:

Skyline Trail has increasingly become a premier destination for hikers, mountain bikers, and trail enthusiasts from all over southern California. The Skyline Trail is the City’s most popular hiking destination and is readily accessible to the public. The area is surrounded by nature and is a gateway for hikers and mountain bikers to access the Cleveland National Forest. A significant portion of the Skyline Trail runs along Skyline Drive and can be accessed from West Foothill Parkway. The name Skyline comes from Corona founder R.B. Taylor, who envisioned a road from Corona to the top of the mountain as far back as the late 1800s and “dedicated” Skyline Drive in 1927 by breaking a bottle of locally grown orange juice.

City records indicate that not only was Skyline Drive dedicated in 1927, the City has actively maintained Skyline Drive for the public benefit for generations (as far back as its current records show). Maps and records indicate that Skyline Drive has connected to Chase Drive since 1962, and there were National Oceanic and Atmospheric Administration Access Road Improvements in 1996. Skyline Drive was paved upon the completion of the Foothill Bridge in 2006. Most visitors to the Skyline area use Skyline Drive for hiking and biking.

In 2020, the Corona City Council announced the purchase of approximately 292 acres of land in the Skyline area. In addition to protecting wilderness areas for future generations and ensuring recreation opportunities for Southern Californians, this purchase ensured that private land ownership would not block access through the Skyline Trail to the Cleveland National Forest. Access to open trail space was vital to the City's investment.

Given the rising interest in the Skyline area and adjacent trails, residents have envisioned Corona as a City of Trails and pushed for the preparation of Corona’s first-ever Trails Master Plan (“TMP”) in 2020. The TMP was approved by the City Council on February 21, 2024, providing a strategic and comprehensive master planning document that guides the development and improvement of the trails system throughout the City of Corona.

The TMP incorporated a Master Plan for the Skyline area of Corona (“Skyline Master Plan”). The Skyline Master Plan focuses on the land owned by the City of Corona, which is comprised of the meadow south of Skyline Drive and the hillside area located between Skyline Drive and Foothill Parkway.

MARIAC\16000.20004\10313212.6
The development of the TMP showed that, in 2023, 73% of total trips to/from the Skyline Drive trailhead occurred between Corona or neighboring cities such as Norco, Eastvale and Riverside. The Skyline Drive trailhead had the highest percentage of activity (56%) during the winter season (January-March), and the majority of trail users (53%) accessed the trailhead during the weekends and in the morning between 6 am and 12 pm. Despite the regional draw of the Skyline Drive trailhead, the majority of the trail users are local residents who live in and around Corona and use the trail multiple times per week.

During outreach for the TMP, community members commented that the Skyline Trail tends to be the most crowded trail in Corona. Many trail users access the Skyline Trailhead by walking or biking down Skyline Drive, a paved roadway that has long been a public right-of-way controlled and maintained by the City of Corona.

Like other popular trailheads in the City of Corona, the Skyline Drive trailhead is established and immovable. As the trail approaches the West Foothill Parkway underpass, it passes along and abuts the eastern property line of real property located at 3298 Skyline Drive, more particularly described as Assessor Parcel No. 112-320-019 (“Property”). The Property consists of 97,574 square feet of land area, or 2.24 acres.

A small sliver of the Property (704 sq. ft.) lies at the very south end of Skyline Drive and extends out into the southern portion of Skyline Drive (“Sliver Parcel”). A true and correct copy of the legal description and depiction of the Sliver Parcel is attached to the Resolution of Necessity as Exhibit A. The Sliver Parcel should have been dedicated to the City many years ago, but for reasons that remain unclear, that never occurred.

The owners of the Property, Donald R. Long and Ann F. Long (“Owners”), have erected barriers on the Sliver Parcel to cut off access to the Skyline Trail from Skyline Drive.

MARIAC\16000.20004\10313212.6
Although multiple generations of Southern California families have enjoyed Skyline Drive as the main route to the Skyline Trailhead, the Owners have intentionally deprived the public of such access by completely blocking this public access by installing barricades in the form of K-rails and other large barriers completely across Skyline Drive, specifically designed to block pedestrian and recreational access. Furthermore, the K-rails have been laced with a white substance believed to be sugar designed to attract bees and wasps.

Not only has trail access been barricaded, but individuals now coming upon the barricades risk bee and wasp stings, which are known to cause, in certain people, allergic reactions, including hives, difficulty breathing, or even anaphylactic shock, which requires immediate medical attention. This has deprived enthusiasts of access to one of the region’s greatest outdoor public spaces and ended nearly 100 years of unimpeded public enjoyment of the Skyline Trail.

Skyline is the City's most popular hiking destination and, before the Owners’ actions, was readily accessible to the public.

The City has engaged in negotiations with the Owners for several years regarding trail access and, most recently, the potential acquisition of the Sliver Parcel; however, the parties have been unable to reach an agreement. The City may continue to negotiate with the Owners to acquire the Sliver Parcel. However, since negotiations with the Owners have stalled, authority is needed now to undertake eminent domain proceedings to acquire the property rights and obtain possession of the Sliver Parcel to ensure continued use of Skyline Drive, which has been a continuing vehicular, bicycle, and pedestrian public right-of-way for many decades, as well as, continued bicycle and pedestrian public access to the Skyline Trail, which has been used for many decades as well (“Project”).

MARIAC\16000.20004\10313212.6
ANALYSIS:

Eminent Domain Law:

The City desires to acquire a fee interest in the Sliver Parcel for purposes of the Project.

The acquisition of the Sliver Parcel will give the City ownership of the full width of the south end of Skyline Drive and preserve continued public access along Skyline Drive, making traversing the Skyline Trail easier and safer. Notably, more than 99.7% of the eastern boundary of the Property and the adjacent parcels abut an already existing public road (Skyline Drive), which is used to access the existing Skyline Trail. The acquisition of the Sliver Parcel would eliminate the isolated sliver of private property that extends into Skyline Drive and the existing flood control channel, while maintaining both resident access for the Owners and public access to the Skyline Trail.

The power of eminent domain is used by the City only as a last resort to obtain interests necessary for projects after 1) negotiations have stalled; or 2) the owner has requested that the City proceed directly to eminent domain for tax or other advantages; or 3) the eminent domain process is necessary to clear title to the property.

Since an agreement has not been reached with the Owners, the eminent domain process is an option the City may pursue to acquire the Sliver Parcel. A litigation guarantee was ordered to determine and confirm that the Owners are the record owners of the Property.

Pursuant to Section 1245.235 of the California Code of Civil Procedures, a notice of this hearing was sent by first class mail on July 18, 2025 to the Owners and stated the City’s intent to consider the adoption of a resolution, the right of the property owners to appear and be heard, and notice that failure to file a written request to appear may result in a waiver of the right to appear and be heard.

The City obtained an appraisal prepared by Benjamin V. Balos, MAI of R.P. Laurain & Associates, Inc. to establish the fair market value of the Sliver Parcel. California’s definition of fair market value is one of the most inclusive definitions in the United States and requires the appraiser to consider the highest and best use of the property and to consider the highest price a willing buyer and seller would agree to. The City’s appraisal must use this definition of fair market value.

An offer of just compensation, pursuant to California Government Code section 7267.2, was made to the Owners for the acquisition of the Sliver Parcel based on the fair market value established by the above-referenced appraisal.

Hearings and Required Findings:

California eminent domain law provides that a public entity may not commence an eminent domain proceeding until its governing body has adopted a Resolution of Necessity, which resolution may only be adopted after each party with an interest in the affected property or the representatives have been given a reasonable opportunity to appear and be heard on the following matters:

MARIAC\16000.20004\10313212.6

1. The public interest and necessity require the proposed project.

2. The project has been planned and located in a manner most compatible with the greatest public good and the least private injury.

3. The real property to be acquired is necessary for the project.

4. The offer of just compensation has been made to the property owner.

The four required findings referenced above are addressed below.

1. The Public Interest and Necessity Require the Proposed Project Approval of the Resolution of Necessity to acquire the Sliver Parcel serves the public interest and is necessary for completion of the Project as it will give the City ownership of the full width of the south end of Skyline Drive and preserve continued public access along Skyline Drive, making accessing and traversing the Skyline Trail easier and safer for residents and visitors alike. The acquisition of the Sliver Parcel will also eliminate the isolated sliver of private property extending into Skyline Drive and the existing flood control channel, while maintaining both resident access for the Owners and public access to the Skyline Trail.

2. The Project is Planned or Located in a Manner That Will be Most Compatible With the Greatest Public Good and the Least Private Injury
The location of Skyline Drive and the Skyline Trail are fixed and have existed for decades.

The public has already used the Sliver Parcel for access to the Skyline Trail since at least the completion of the Foothill Bridge in 2006. To move the Project elsewhere would require significant land use policy changes, cause greater impact to property owners and to City residents, and would be effectively cost-prohibitive. The Project has been designed to minimize property impacts and will not impede the Owners’ access to their property along Skyline Drive.

3. The Real Property to be Acquired is Necessary for the Proposed Project The fee interest to be acquired, in the Sliver Parcel, lies in the path of the Project area and City staff has worked with City consultants to ensure that no more property is being acquired from the Property than what is necessary. The Sliver Parcel is required to establish ownership of the full width of the south end of Skyline Drive and eliminate the isolated sliver of private property within Skyline Drive and the existing flood control channel to preserve continued public access to the Skyline Trail along Skyline Drive.

4. The Offer of Just Compensation Has Been Made
As indicated above, an appraisal was prepared by R.P. Laurain & Associates, to establish the fair market value of the fee interest the City is seeking to acquire in the Sliver Parcel.

An offer of just compensation was made to the Owners to purchase the fee interest as established by the approved appraisal and as required by Section 7267.2 of the California Government Code. Although a negotiated settlement may still be possible for the Sliver Parcel, it would be appropriate to commence the procedure to acquire the property through eminent domain to ensure that the City has possession of the real property, which is necessary in order for the City to proceed with the Project.

MARIAC\16000.20004\10313212.6
The assessor parcel number, the party to whom the offer was made, and the date of the offer is provided in the following table:

APN Record Owners Date of
Offer
112-320-019 Donald R. Long and Ann F. Long 10/07/2024
FINANCIAL IMPACT:

There is no financial impact with the approval of the recommended actions. Once an amount is determined, staff will return to the City Council for approval of an appropriation.

ENVIRONMENTAL ANALYSIS:

This action is exempt from environmental review under the California Environmental Quality Act (CEQA), pursuant to Section 15061(b)(3) of the CEQA Guidelines. This section, known as the commonsense exemption, stipulates that CEQA applies only to projects with the potential for significant environmental effects. When it is evident that an activity will not significantly impact the environment, the activity is not subject to CEQA.

This resolution seeks the Council's approval to begin the process to acquire property to ensure that access to the existing Skyline Trail is preserved.

PREPARED BY: JAMIE RAYMOND, CHIEF DEPUTY CITY ATTORNEY
REVIEWED BY: SAVAT KHAMPHOU, PUBLIC WORKS DIRECTOR
ATTACHMENTS:

1. Exhibit 1 – Resolution No. 2025-091

MARIAC\16000.20004\10313212.6
DATE: 08/06/2024
TO: Honorable Mayor and City Council Members
FROM: Public Works Department
2025-317

REQUEST FOR CITY COUNCIL ACTION
SUBJECT:

PUBLIC HEARING FOR RESOLUTION OF NECESSITY TO ACQUIRE, BY EMINENT DOMAIN, A FEE INTEREST IN A PORTION OF PROPERTY AT 3298 SKYLINE DRIVE (APN 112-320-019) FOR THE CONTINUED USE OF SKYLINE DRIVE AND

CONTINUED PUBLIC ACCESS TO THE SKYLINE TRAIL
EXECUTIVE SUMMARY:

This staff report asks the City Council to adopt a resolution declaring the necessity of acquiring, by eminent domain, a fee interest in a portion of property located at 3298 Skyline Drive and identified as Assessor Parcel No. 112-320-019 for continued vehicular, bicycle, and pedestrian public right-of-way purposes.

RECOMMENDED ACTION:

That the City Council:
a. Conduct a public hearing to consider the adoption of a resolution of necessity, including providing all parties interested in the affected property and their attorneys, or their representatives, an opportunity to be heard on the issues relevant to the Resolution of Necessity;
b. Make the following findings as hereinafter described in this report:

MARIAC\16000.20004\10313212.6
i) The public interest and necessity require the proposed Project; ii) The Project is planned or located in a manner that will be most compatible with the greatest public good and the least private injury; iii) The real property to be acquired is necessary for the Project; and iv) The offer of just compensation has been made to the property owner. c. Adopt Resolution No. 2025-091, declaring the necessity of acquisition, by eminent domain, of a fee interest in a portion of real property located at 3298 Skyline Drive, and more particularly described as Assessor Parcel No. 112-320-019, for the continued use of Skyline Drive for vehicular, bicycle and pedestrian public right-ofway purposes and continued bicycle and pedestrian public access to the Skyline Trail.

BACKGROUND & HISTORY:

Skyline Trail has increasingly become a premier destination for hikers, mountain bikers, and trail enthusiasts from all over southern California. The Skyline Trail is the City’s most popular hiking destination and is readily accessible to the public. The area is surrounded by nature and is a gateway for hikers and mountain bikers to access the Cleveland National Forest. A significant portion of the Skyline Trail runs along Skyline Drive and can be accessed from West Foothill Parkway. The name Skyline comes from Corona founder R.B. Taylor, who envisioned a road from Corona to the top of the mountain as far back as the late 1800s and “dedicated” Skyline Drive in 1927 by breaking a bottle of locally grown orange juice.

City records indicate that not only was Skyline Drive dedicated in 1927, the City has actively maintained Skyline Drive for the public benefit for generations (as far back as its current records show). Maps and records indicate that Skyline Drive has connected to Chase Drive since 1962, and there were National Oceanic and Atmospheric Administration Access Road Improvements in 1996. Skyline Drive was paved upon the completion of the Foothill Bridge in 2006. Most visitors to the Skyline area use Skyline Drive for hiking and biking.

In 2020, the Corona City Council announced the purchase of approximately 292 acres of land in the Skyline area. In addition to protecting wilderness areas for future generations and ensuring recreation opportunities for Southern Californians, this purchase ensured that private land ownership would not block access through the Skyline Trail to the Cleveland National Forest. Access to open trail space was vital to the City's investment.

Given the rising interest in the Skyline area and adjacent trails, residents have envisioned Corona as a City of Trails and pushed for the preparation of Corona’s first-ever Trails Master Plan (“TMP”) in 2020. The TMP was approved by the City Council on February 21, 2024, providing a strategic and comprehensive master planning document that guides the development and improvement of the trails system throughout the City of Corona.

The TMP incorporated a Master Plan for the Skyline area of Corona (“Skyline Master Plan”). The Skyline Master Plan focuses on the land owned by the City of Corona, which is comprised of the meadow south of Skyline Drive and the hillside area located between Skyline Drive and Foothill Parkway.

MARIAC\16000.20004\10313212.6
The development of the TMP showed that, in 2023, 73% of total trips to/from the Skyline Drive trailhead occurred between Corona or neighboring cities such as Norco, Eastvale and Riverside. The Skyline Drive trailhead had the highest percentage of activity (56%) during the winter season (January-March), and the majority of trail users (53%) accessed the trailhead during the weekends and in the morning between 6 am and 12 pm. Despite the regional draw of the Skyline Drive trailhead, the majority of the trail users are local residents who live in and around Corona and use the trail multiple times per week.

During outreach for the TMP, community members commented that the Skyline Trail tends to be the most crowded trail in Corona. Many trail users access the Skyline Trailhead by walking or biking down Skyline Drive, a paved roadway that has long been a public right-of-way controlled and maintained by the City of Corona.

Like other popular trailheads in the City of Corona, the Skyline Drive trailhead is established and immovable. As the trail approaches the West Foothill Parkway underpass, it passes along and abuts the eastern property line of real property located at 3298 Skyline Drive, more particularly described as Assessor Parcel No. 112-320-019 (“Property”). The Property consists of 97,574 square feet of land area, or 2.24 acres.

A small sliver of the Property (704 sq. ft.) lies at the very south end of Skyline Drive and extends out into the southern portion of Skyline Drive (“Sliver Parcel”). A true and correct copy of the legal description and depiction of the Sliver Parcel is attached to the Resolution of Necessity as Exhibit A. The Sliver Parcel should have been dedicated to the City many years ago, but for reasons that remain unclear, that never occurred.

The owners of the Property, Donald R. Long and Ann F. Long (“Owners”), have erected barriers on the Sliver Parcel to cut off access to the Skyline Trail from Skyline Drive.

MARIAC\16000.20004\10313212.6
Although multiple generations of Southern California families have enjoyed Skyline Drive as the main route to the Skyline Trailhead, the Owners have intentionally deprived the public of such access by completely blocking this public access by installing barricades in the form of K-rails and other large barriers completely across Skyline Drive, specifically designed to block pedestrian and recreational access. Furthermore, the K-rails have been laced with a white substance believed to be sugar designed to attract bees and wasps.

Not only has trail access been barricaded, but individuals now coming upon the barricades risk bee and wasp stings, which are known to cause, in certain people, allergic reactions, including hives, difficulty breathing, or even anaphylactic shock, which requires immediate medical attention. This has deprived enthusiasts of access to one of the region’s greatest outdoor public spaces and ended nearly 100 years of unimpeded public enjoyment of the Skyline Trail.

Skyline is the City's most popular hiking destination and, before the Owners’ actions, was readily accessible to the public.

The City has engaged in negotiations with the Owners for several years regarding trail access and, most recently, the potential acquisition of the Sliver Parcel; however, the parties have been unable to reach an agreement. The City may continue to negotiate with the Owners to acquire the Sliver Parcel. However, since negotiations with the Owners have stalled, authority is needed now to undertake eminent domain proceedings to acquire the property rights and obtain possession of the Sliver Parcel to ensure continued use of Skyline Drive, which has been a continuing vehicular, bicycle, and pedestrian public right-of-way for many decades, as well as, continued bicycle and pedestrian public access to the Skyline Trail, which has been used for many decades as well (“Project”).

MARIAC\16000.20004\10313212.6
ANALYSIS:

Eminent Domain Law:

The City desires to acquire a fee interest in the Sliver Parcel for purposes of the Project.

The acquisition of the Sliver Parcel will give the City ownership of the full width of the south end of Skyline Drive and preserve continued public access along Skyline Drive, making traversing the Skyline Trail easier and safer. Notably, more than 99.7% of the eastern boundary of the Property and the adjacent parcels abut an already existing public road (Skyline Drive), which is used to access the existing Skyline Trail. The acquisition of the Sliver Parcel would eliminate the isolated sliver of private property that extends into Skyline Drive and the existing flood control channel, while maintaining both resident access for the Owners and public access to the Skyline Trail.

The power of eminent domain is used by the City only as a last resort to obtain interests necessary for projects after 1) negotiations have stalled; or 2) the owner has requested that the City proceed directly to eminent domain for tax or other advantages; or 3) the eminent domain process is necessary to clear title to the property.

Since an agreement has not been reached with the Owners, the eminent domain process is an option the City may pursue to acquire the Sliver Parcel. A litigation guarantee was ordered to determine and confirm that the Owners are the record owners of the Property.

Pursuant to Section 1245.235 of the California Code of Civil Procedures, a notice of this hearing was sent by first class mail on July 18, 2025 to the Owners and stated the City’s intent to consider the adoption of a resolution, the right of the property owners to appear and be heard, and notice that failure to file a written request to appear may result in a waiver of the right to appear and be heard.

The City obtained an appraisal prepared by Benjamin V. Balos, MAI of R.P. Laurain & Associates, Inc. to establish the fair market value of the Sliver Parcel. California’s definition of fair market value is one of the most inclusive definitions in the United States and requires the appraiser to consider the highest and best use of the property and to consider the highest price a willing buyer and seller would agree to. The City’s appraisal must use this definition of fair market value.

An offer of just compensation, pursuant to California Government Code section 7267.2, was made to the Owners for the acquisition of the Sliver Parcel based on the fair market value established by the above-referenced appraisal.

Hearings and Required Findings:

California eminent domain law provides that a public entity may not commence an eminent domain proceeding until its governing body has adopted a Resolution of Necessity, which resolution may only be adopted after each party with an interest in the affected property or the representatives have been given a reasonable opportunity to appear and be heard on the following matters:

MARIAC\16000.20004\10313212.6

1. The public interest and necessity require the proposed project.

2. The project has been planned and located in a manner most compatible with the greatest public good and the least private injury.

3. The real property to be acquired is necessary for the project.

4. The offer of just compensation has been made to the property owner.

The four required findings referenced above are addressed below.

1. The Public Interest and Necessity Require the Proposed Project Approval of the Resolution of Necessity to acquire the Sliver Parcel serves the public interest and is necessary for completion of the Project as it will give the City ownership of the full width of the south end of Skyline Drive and preserve continued public access along Skyline Drive, making accessing and traversing the Skyline Trail easier and safer for residents and visitors alike. The acquisition of the Sliver Parcel will also eliminate the isolated sliver of private property extending into Skyline Drive and the existing flood control channel, while maintaining both resident access for the Owners and public access to the Skyline Trail.

2. The Project is Planned or Located in a Manner That Will be Most Compatible With the Greatest Public Good and the Least Private Injury
The location of Skyline Drive and the Skyline Trail are fixed and have existed for decades.

The public has already used the Sliver Parcel for access to the Skyline Trail since at least the completion of the Foothill Bridge in 2006. To move the Project elsewhere would require significant land use policy changes, cause greater impact to property owners and to City residents, and would be effectively cost-prohibitive. The Project has been designed to minimize property impacts and will not impede the Owners’ access to their property along Skyline Drive.

3. The Real Property to be Acquired is Necessary for the Proposed Project The fee interest to be acquired, in the Sliver Parcel, lies in the path of the Project area and City staff has worked with City consultants to ensure that no more property is being acquired from the Property than what is necessary. The Sliver Parcel is required to establish ownership of the full width of the south end of Skyline Drive and eliminate the isolated sliver of private property within Skyline Drive and the existing flood control channel to preserve continued public access to the Skyline Trail along Skyline Drive.

4. The Offer of Just Compensation Has Been Made
As indicated above, an appraisal was prepared by R.P. Laurain & Associates, to establish the fair market value of the fee interest the City is seeking to acquire in the Sliver Parcel.

An offer of just compensation was made to the Owners to purchase the fee interest as established by the approved appraisal and as required by Section 7267.2 of the California Government Code. Although a negotiated settlement may still be possible for the Sliver Parcel, it would be appropriate to commence the procedure to acquire the property through eminent domain to ensure that the City has possession of the real property, which is necessary in order for the City to proceed with the Project.

MARIAC\16000.20004\10313212.6
The assessor parcel number, the party to whom the offer was made, and the date of the offer is provided in the following table:

APN Record Owners Date of
Offer
112-320-019 Donald R. Long and Ann F. Long 10/07/2024
FINANCIAL IMPACT:

There is no financial impact with the approval of the recommended actions. Once an amount is determined, staff will return to the City Council for approval of an appropriation.

ENVIRONMENTAL ANALYSIS:

This action is exempt from environmental review under the California Environmental Quality Act (CEQA), pursuant to Section 15061(b)(3) of the CEQA Guidelines. This section, known as the commonsense exemption, stipulates that CEQA applies only to projects with the potential for significant environmental effects. When it is evident that an activity will not significantly impact the environment, the activity is not subject to CEQA.

This resolution seeks the Council's approval to begin the process to acquire property to ensure that access to the existing Skyline Trail is preserved.

PREPARED BY: JAMIE RAYMOND, CHIEF DEPUTY CITY ATTORNEY
REVIEWED BY: SAVAT KHAMPHOU, PUBLIC WORKS DIRECTOR
ATTACHMENTS:

1. Exhibit 1 – Resolution No. 2025-091

JAMIER\16000.20004\10313233.1
RESOLUTION NO. 2025-091

RESOLUTION OF NECESSITY OF THE CITY COUNCIL OF THE

CITY OF CORONA FOR THE ACQUISITION, BY EMINENT

DOMAIN, OF A FEE INTEREST IN A PORTION OF CERTAIN
REAL PROPERTY LOCATED AT 3298 SKYLINE DRIVE, IN THE
CITY OF CORONA, RIVERSIDE, COUNTY, CALIFORNIA 92882

AND MORE PARTICULARLY DESCRIBED AS ASSESSOR
PARCEL NO. 112-320-019 FOR THE CONTINUED USE OF

SKYLINE DRIVE AS WELL AS FOR CONTINUED BICYCLE AND

PEDESTRIAN PUBLIC ACCESS TO THE SKYLINE TRAIL
WHEREAS, the City of Corona (“City”) proposes to acquire a fee interest in a portion of certain real property located at 3298 Skyline Drive, in the City of Corona, Riverside County, California, 92882, more particularly identified as Assessor Parcel No. 112-320-019 for the continued use of Skyline Drive, which has been a continuing vehicular, bicycle and pedestrian public right-of-way for many decades, as well as for continued bicycle and pedestrian public access to the Skyline Trail, which has been used for many decades as well, in the City of Corona, Riverside County, California (“Project”), pursuant to the authority granted to it by Sections 37350.5 of the California Government Code and sections 1240.010, 1240.020 and 1240.030 of the California Code of Civil Procedure; and
WHEREAS, pursuant to Section 1245.235 of the California Code of Civil Procedure, the City scheduled a public hearing for August 6, 2025 at 6:00 p.m., at the Corona City Hall, located at 400 South Vicentia Avenue, Corona, California, and gave to each person whose property is to be acquired and whose name and address appears on the last equalized county assessment roll, notice and a reasonable opportunity to appear at said hearing and be heard on the matters referred to in Section 1240.030 of the California Code of Civil Procedure; and WHEREAS, said hearing has been held by the City and each person whose property is to be acquired by eminent domain was afforded the opportunity to be heard on said matters; and WHEREAS, the City may now adopt a resolution of necessity pursuant to Section 1240.040 of the California Code of Civil Procedure.

NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF CORONA, CALIFORNIA, AS FOLLOWS:

SECTION 1. Compliance with California Code of Civil Procedure and California Environmental Quality Act. There has been compliance by the City with the requirements of Section 1245.235 of the California Code of Civil Procedure and the California Environmental Quality Act.

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SECTION 2. Public Use. The public use for which the real property interest is to be acquired is for public right-of-way purposes and the continued use of Skyline Drive, which has been a continuing vehicular, bicycle and pedestrian public right-of-way for many decades, as well as for continued bicycle and pedestrian public access to the Skyline Trail, which has been used for many decades as well, in the City of Corona, Riverside County, California. Section 37350.5 of the California Government Code authorizes the City to acquire by eminent domain real property necessary for such purposes.

SECTION 3. Description of Property. Attached and marked as Exhibit “A” are the legal definition, legal description and depiction of the real property to be acquired by the City, which describes the general location and extent of the property to be acquired with sufficient detail for reasonable identification.

SECTION 4. Findings. The City hereby finds and determines each of the following:
(a) The public interest and necessity require the proposed Project; (b) The proposed Project is planned or located in the manner that will be most compatible with the greatest public good and least private injury; (c) The fee interest described in Exhibit “A” is necessary for the proposed Project;
(d) The offer required by section 7267.2 of the California Government Code was made.

SECTION 5. Use Not Unreasonably Interfering with Existing Public Use. Some or all of the real property to be acquired may be subject to easements and rights-of-way appropriated to existing public uses. The legal descriptions of these easements and rights-of-way are on file with the City and describe the general location and extent of the easements and rights-of-way with sufficient detail for reasonable identification. In the event the herein described use or uses will not unreasonably interfere with or impair the continuance of the public use as it now exists or may reasonably be expected to exist in the future, counsel for the City is authorized to acquire the easement interest subject to such existing public uses pursuant to section 1240.510 of the California Code of Civil Procedure.

SECTION 6. More Necessary Public Use. Some or all of the real property to be acquired may be subject to easements and rights-of-way appropriated to existing public uses. To the extent that the herein described use or uses will unreasonably interfere with or impair the continuance of the public use as it now exists or may reasonably be expected to exist in the future, the City finds and determines that the herein described use or uses are more necessary than said existing public use. Counsel for the City is authorized to acquire the real property appropriated to such existing public uses pursuant to section 1240.610 of the California Code of Civil Procedure. Staff is further authorized to make such improvements to the real property being acquired that it determines is reasonably necessary to mitigate any adverse impact upon the existing public use.

SECTION 7. Further Activities. Counsel for the City is hereby authorized to file legal proceedings necessary to acquire the hereinabove described real property in the name of and on

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behalf of the City by eminent domain, and counsel is authorized to institute and prosecute such legal proceedings as may be required in connection therewith. Legal counsel is further authorized to take such steps as may be authorized and required by law, and to make such security deposits as may be required by order of court, to permit the City to take possession of and use said real property at the earliest possible time. Counsel is further authorized to correct any errors or to make or agree to non-material changes in the legal description of the real property that are deemed necessary for the conduct of the condemnation action or other proceedings or transactions required to acquire the subject real property. Counsel is further authorized to take any steps necessary to legally reduce the extent of the interests or property to be acquired where necessary and as requested by the City.

SECTION 8. Effective Date. The Mayor shall sign this Resolution and the City Clerk shall attest thereto, and this Resolution shall take effect and be in force on the date of its adoption.

PASSED, APPROVED AND ADOPTED this 6th day August, 2025.

Mayor of the City of Corona, California
ATTEST:

City Clerk of the City of Corona, California

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CERTIFICATION
I, Sylvia Edwards, City Clerk of the City of Corona, do hereby certify that the foregoing Resolution was regularly passed and adopted by the City Council of the City of Corona, California, at a regular meeting thereof held on the 6th day of August, 2025 by the following vote:

AYES:

NOES:

ABSENT:

ABSTAIN:

IN WITNESS WHEREOF, I have hereunto set my hand and affixed the official seal of the City of Corona, California, this 6th day of August, 2025.

City Clerk of the City of Corona
(SEAL)

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EXHIBIT “A”

LEGAL DEFINITION, LEGAL DESCRIPTION AND DEPICTION OF

PROPERTY TO BE ACQUIRED
[SEE ATTACHED THREE (3) PAGES]

EXHIBIT A

LEGAL DEFINITION
City of Corona
Skyline Trail Project
As to Assessor Parcel Number 112-320-019
“Fee,” also known as fee simple or fee simple absolute, grants to the City of Corona absolute ownership in the property to be acquired.

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EXHIBIT “A”

LEGAL DESCRIPTION OF SUBJECT PROPERTY

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EXHIBIT “B”

DEPICTION OF SUBJECT PROPERTY

DATE: 08/06/2025
TO: Honorable Mayor and City Council Members
FROM: Office of Economic Development

REQUEST FOR CITY COUNCIL ACTION
SUBJECT:

PROFESSIONAL SERVICES AGREEMENT WITH THE CORONA CHAMBER OF

COMMERCE FOR BUSINESS PROMOTION, MARKETING, AND RETENTION

SERVICES
EXECUTIVE SUMMARY:

This staff report asks the City Council to consider approving the proposed agreement between the City and the Corona Chamber of Commerce for Business Promotion, Marketing, and Retention Services for a total value of $67,250, with $60,000 in monetary services and an in-kind match of $7,250.

RECOMMENDED ACTION:

That the City Council authorize the City Manager, or their designee, to enter into a Professional Services Agreement with the Corona Chamber of Commerce for Business Promotion, Marketing, and Retention Services.

BACKGROUND & HISTORY:

The Office of Economic Development partners with various local, regional, state, and federal agencies to enhance the City’s business offerings and resources to more than 12,000 businesses operating in Corona. Through these partnerships, the City leverages resources to address various business and community needs. These partnerships position the City to offer a variety of programs, services, grants, and technical assistance to aid business growth and resiliency in Corona.

For many years, the City and the Corona Chamber of Commerce (“the Chamber”) have entered into a Professional Services Agreement (Agreement) for business

promotion, marketing, and retention services. The Chamber serves as a unique strategic partner to the City, offering access to hard-to-reach and curated business audiences that support broader economic development goals. Through the Agreement, the Chamber provides support for initiatives that are aligned with shared goals of the City and the Chamber.

ANALYSIS:

For Fiscal Year 2026, the Chamber proposed an expanded range of services and sponsorships totaling $142,500. With the adopted FY26 City budget for this agreement as a guide, Staff reviewed the FY 2026 Chamber proposal for offerings that provided the greatest benefit to residents, were most in alignment with City strategic objectives, and cumulatively fit within the adopted FY26 budget.

For ease of comparison, staff prepared the table below outlining the Chamber’s FY 2026 proposal with FY 2026 recommended expenditures:

Item FY 25
Approved
Contract
FY 26
Chamber
Proposal
FY 26
Recommend?
Rationale
Executive
Partner
Marketing
Support
$18,000 $18,000 $18,000 Staff recommend the customized marketing partnership to increase City visibility through
print, digital, and promotional outreach. This
includes enhanced support for the Shop Dine
Corona campaign, dedicated advertising in
Chamber publications, and opportunities to copromote City programs, services, and events.

The partnership also conveys Chamber
membership benefits to Council and Staff for
events and programming.

Business
Workshops
$20,000
(4x)
$40,000
(8x)
$10,000
(2x)
Staff recommend offering two business
workshops (at $5,000 each) through the
Chamber. Staff has sufficient capacity to support
the coordination and delivery of additional
workshops in-house if needed.

New Business
Welcome
Reception
$4,000 $4,000 $4,000 City staff recommend partnering with the Chamber to host an annual in-person New
Business Welcome Reception. This initiative
aligns with the City of Corona’s Strategic Plan to
support business retention, expansion, and
community engagement.

Manufacturing
Tours &
Industry Visits
$10,000 $10,000 $10,000 City staff recommend allocating $10,000 for the Chamber to lead all coordination for this effort,
which includes a minimum of (5) manufacturing
tours per year and up to (2) major industry
events focused on Corona’s target industry
sectors. This initiative supports the City of
Corona’s Strategic Plan to strengthen key
industries and promote economic development.

Good Morning
Corona
events
$6,250 $10,000
(10)
$5,000
(up to 5)
City staff recommend allocating $5,000 to
sponsor (up to 5) Good Morning Corona events
in partnership with the Chamber.

Taste of
Corona
$5,000 - $5,000 City staff recommend allocating $5000 of the budget to sponsoring the annual Taste of
Corona event. This opportunity is not listed in
the Chamber’s proposal but is included based
on Council’s FY25 sponsorship of the event.

Executive
Leadership
Roundtable
$3,500 - $3,000 Staff recommend sending two City
representatives to attend the Executive
Leadership Roundtable to engage with
participants. Having staff participate in the
program helps build bridges of trust and
understanding between the city and the
community.

Host Local
Gov ELR Day
$3,000 (in
kind)
$3,000 (in
kind)
City staff recommend providing in-kind support,
including staff time valued at approximately
$3,000, to host the Executive Leadership
Roundtable (ELR) Group for Local Government
Day. This contribution aligns with the City of
Corona’s Strategic Plan to promote public sector
collaboration and leadership development.

Business
Expo (InKind)
$1,250 (in
kind)
- $1,250 (in
kind)
Staff recommend providing in-kind support,
including facility rental and staff time to host this
event at the Circle City Center or a comparable
City venue. This contribution, valued at
approximately $1,250, aligns with the City of
Corona’s Strategic Plan to support business
engagement and economic development.

Chamber
Working
Group
Meetings (InKind)
$3,000 (in
kind)
- $3,000 (in
kind)
City staff recommend providing in-kind support,
including facility rental and staff time, for midweek Chamber Working Group meetings at a mutually agreeable City facility. This contribution
aligns with the City of Corona’s Strategic Plan to
foster collaboration and stakeholder
engagement.

Community &
Business
Surveys
- $15,000 $5,000 Staff recommend partnering with the Chamber to conduct one Community & Business Survey,
utilizing the City’s advanced surveying
capability, to assess needs and connect with the
larger business community. This targeted
outreach aligns with the City’s economic
development priorities.

Economic
Forecast
Event
- $7,500 - Staff do not recommend sponsoring this event given the high cost and availability of other
means to obtain this information.

Innovation
Month
- $20,000 - Staff do not recommend sponsoring this event because it does not clearly align with the City's
strategic goals, and the cost would exceed the
allocated budget.

World Trade
Conference
- $6,000 - Staff do not recommend sponsoring this event because it does not clearly align with the City's
strategic goals, and the cost would exceed the
allocated budget.

Women’s
Leadership
Conference
- $5,000 - Staff do not recommend sponsoring this event because the cost would exceed the allocated
budget. Staff would be agreeable to provide inkind support.

Custom
Introductions
& Onboarding
for ED Staff
- $15,000 - Staff has the internal capacity to facilitate connections with business owners and
executives.

Downtown
Initiatives
- $10,000 - Staff has the internal capacity to facilitate business engagement about the Downtown.

TOTAL $66,750
$7,250 (in
kind)
$142,500 $60,000
$7,250 (in
kind)
This specific combination of recommendations is curated to best support business promotion, marketing, and retention activities that align with the City of Corona’s Strategic Plan and contribute to a thriving local economy. These represent staff’s assessment of the highest and best use of the budgeted funds for this agreement.

The City of Corona’s Economic Development Department is currently fully staffed with the capacity and expertise necessary to carry out the objectives outlined the City’s strategic plans. The recommended agreement with the Chamber will help augment these efforts with the business community.

FINANCIAL IMPACT:

Funding for the recommended action is available in the Economic Development Department’s operating budget within General Fund 110. The department has budgeted $60,000 for this agreement. Any expenditures exceeding this amount will require an additional allocation from the General Fund.

ENVIRONMENTAL ANALYSIS:

This action is exempt pursuant to Section 15061(b)(3) of the Guidelines for California Environmental Quality Act (CEQA), which states that a project is exempt from CEQA if the activity is covered by the commonsense exemption that CEQA applies only to projects that have the potential for causing a significant effect on the environment.

Where it can be seen with certainty that there is no possibility that the activity in question may have a significant effect on the environment, the activity is not subject to CEQA. This action simply recommends Council provide direction on a formalized agreement between the City and Chamber for business promotion, marketing, and retention services and there is no possibility that this action will have a significant effect on the environment