Corona City Council
March 19, 2025

RESOLUTION NO. 2025-014

RESOLUTION OF THE CITY COUNCIL OF THE CITY OF

CORONA, CALIFORNIA, TENTATIVELY APPROVING AN
AMENDMENT TO THE CITY’S GENERAL PLAN TO

REVISE THE CITYWIDE ROADWAY PLAN WITHIN THE

CIRCULATION ELEMENT TO CHANGE THE ROADWAY

CLASSIFICATION FOR A PORTION OF WEST ONTARIO
AVENUE FROM MAJOR ARTERIAL 4 LANE TO MAJOR
ARTERIAL 6 LANE AND TO REVISE THE PUBLIC SAFETY

ELEMENT TO UPDATE THE DEFINITION AND
DESCRIPTION OF THE CITY’S LOCAL HAZARD
MITIGATION PLAN, AS PART OF THE CYCLE 2 OF

GENERAL PLAN AMENDMENTS FOR CALENDAR YEAR
2025 (GPA2024-0002).

WHEREAS, on February 10, 2025, the Planning and Housing Commission of the City of Corona (“Planning Commission”) conducted a duly noticed public hearing and recommended that the City Council of the City of Corona (“City Council”) approve GPA2024- 0002 as part of the General Plan Amendments for Cycle 2 for calendar year 2025 to: (1) revise the Citywide Roadway Plan within the Circulation Element to change the roadway classification for a portion of West Ontario Avenue from “Major Arterial 4 Lane” to “Major Arterial 6 Lane” (“Circulation Element Amendment”); and (2) to revise the Public Safety Element to update the definition and description of the City’s adopted Local Hazard Mitigation Plan (“Public Safety Element Amendment”) (Circulation Element Amendment and Public Safety Element Amendment collectively referred to herein as the “General Plan Amendment”); and WHEREAS, on June 3, 2020, the City Council of the City of Corona (“City”) adopted Resolution No. 2020-036 certifying a Final Environmental Impact Report for the Corona General Plan Technical Update (SCH # 2018081039) (“General Plan EIR”), made findings of fact and adopted a Statement of Overriding Considerations and a Mitigation Monitoring and Reporting Program; and
WHEREAS, in accordance with the requirements of the California Environmental Quality Act (Pub. Res. Code Section 21000 et seq.), together with the State Guidelines (14 Cal.

Code Regs. Section 15000 et seq.) and local guidelines implementing said Act (collectively, “CEQA”), the City prepared an environmental evaluation to analyze the potential environmental impacts associated with the Circulation Element Amendment and determine whether such impacts were adequately addressed in the General Plan EIR. The evaluation indicated that the Circulation Element Amendment will not result in impacts beyond what was previously analyzed in the General Plan EIR, will not require additional mitigation measures not otherwise included in the General Plan EIR because the Circulation Element Amendment will not have new or substantially more severe significant environmental impacts and none of the conditions described in CEQA Guidelines Section 15162 calling for the preparation of a subsequent EIR has occurred. Therefore, 2 the City prepared an addendum to the General Plan EIR (“Addendum”), attached hereto as Exhibit “A” and incorporated herein by reference; and
WHEREAS, the Planning Commission based its recommendation to adopt the General Plan Amendment on the findings set forth below; and WHEREAS, on March 19, 2025, the City Council held a duly noticed public hearing at which all persons wishing to testify in connection with the General Plan Amendment were heard and the General Plan Amendment was comprehensively reviewed; and

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

SECTION 1. CEQA Findings for Circulation Element Amendment. The City Council has reviewed and considered the information contained in the Addendum and all written and oral evidence received and presented concerning the Circulation Element Amendment. Based on the entire record before it and all written and oral evidence received and presented, the City Council has determined that the Addendum constitutes an adequate, accurate, objective, and complete review of the Circulation Element Amendment and finds that no additional environmental review is required based on the reasons set forth below:

A. No substantial changes are proposed by the Circulation Element Amendment that will require major revisions of the General Plan EIR due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects.

B. No substantial changes have occurred with respect to the circumstances under which the Circulation Element Amendment will be undertaken which will require major revisions to the General Plan EIR due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects.

C. No new information of substantial importance has been found that shows any of the following:

1. The Circulation Element Amendment will have one or more significant effects not discussed in the General Plan EIR;

2. Significant effects previously examined will be substantially more severe than shown in the General Plan EIR;

3. Mitigation measures previously found to be infeasible would in fact be feasible and would substantially reduce one or more significant effects of the Circulation Element Amendment; or
3 4. Mitigation measures which are considerably different from those analyzed in the General Plan EIR would substantially reduce one or more significant effects on the environment.

SECTION 2. CEQA Findings for Public Safety Element Amendment. As the decision-making body for the Public Safety Element Amendment, the City Council finds that this action is exempt pursuant to Section 15061(b)(3) of the Guidelines for the California Environmental Quality Act (CEQA), which states that a project is exempt from CEQA if the activity is covered by the common sense 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. The approval of the Public Safety Element Amendment simply makes legislative changes to the General Plan to make it consistent with state and federal law. As such, there is no possibility that the Public Safety Element Amendment will have a significant effect on the environment. Therefore, no environmental analysis is required and the City Clerk is directed to file a Notice of Exemption with the County of Riverside.

SECTION 3. Adoption of Addendum to General Plan EIR. The City Council hereby approves and adopts the Addendum to the General Plan EIR prepared for the Circulation Element Amendment.

SECTION 4. General Plan Amendment Findings. Based on the entire administrative record before the City Council, including all written and oral evidence presented to the City Council, the City Council hereby makes and adopts the following findings:

A. The General Plan Amendment is in the public interest and would not be detrimental to public health, safety and welfare for the following reasons:
(i) The proposed Circulation Element Amendment would
facilitate implementation of the West Ontario Avenue Widening Project by amending the Citywide Roadway Plan within Circulation Element of the General Plan. While the requested amendment would only amend an exhibit within the Circulation Element and does not, in and of itself, propose any new development, it will facilitate the West Ontario Avenue Widening Project, which would, among other things, serve to alleviate an existing traffic bottleneck, thereby improving the safety and flow of traffic through the City.
(ii) The proposed Public Safety Element Amendment would update language describing the City’s adopted Local Hazard Mitigation Plan, which will bring the General Plan into compliance with federal law (the Stafford Act) and state law (Assembly Bill 2140) and thereby make the City eligible for both federal and state funding intended to address the public health, safety and welfare following natural or human-caused disasters.

B. The General Plan Amendment is internally consistent with the elements of the General Plan, including the goals and polices stated therein, for the following reasons:
4 (i) The Circulation Element Amendment implements the City’s West Ontario Avenue Widening Project to improve the flow of traffic through the City, improve or complete missing roadside infrastructure, and create continuity in the design of vehicular and pedestrian infrastructure. This is consistent with General Plan Circulation Element Goal CE-2, which is to move people, goods and resources throughout Corona in a manner that is supportive of the land use in a safe and efficient circulation system and that reduces regional cut-through traffic in the City.
(ii) The Public Safety Element Amendment is consistent with General Plan Public Safety Goal PS-3, because it ensures that the health, safety, and general welfare of residents and visitors of the City of Corona, including the overall health of the natural environment, is provided through enforcement of a valid Local Hazard Mitigation Plan that complies with federal and state law.
(iii) The Public Safety Element Amendment is consistent with General Plan Public Safety Goal PS-11, because it identifies effective emergency responses to disasters through the Local Hazard Mitigation Plan intended to limit the loss of life, curtail property damage and social dislocation, enhance emergency preparedness through community education and self-help programs, and minimize damages and injuries. (iv) The Public Safety Element Amendment is consistent with General Plan Public Safety Policy PS-11.2, because it seeks to maintain emergency and hazard mitigation plans; update and define roles of city departments and other partnering agencies in the event of an emergency or disaster, thus ensuring interagency coordination and collaboration with the Operational Area.
(v) The Public Safety Element Amendment is consistent with General Plan Public Safety Policy PS-11.10, because it implements amendments to the City’s Local Hazard Mitigation Plan resulting from the City’s participation in the review and update of the Riverside County Operational Area Multi-Jurisdictional Local Hazard Mitigation Plan every five years in coordination with all participating jurisdictions and Riverside County Emergency Management Department.

SECTION 5. Tentative Approval of General Plan Amendment GPA2024-0002.

The General Plan Amendment (GPA2024-0004) is hereby tentatively approved and the General Plan shall be amended as shown in Exhibit “B” attached hereto, subject to final approval of the General Plan Amendments for Cycle 2 of calendar year 2025.

SECTION 6. Final Approval. The General Plan Amendment GPA2024-0002 shall become effective upon final approval of the General Plan Amendments for Cycle 2 of calendar year 2025.

SECTION 7. Custodian of Records. The documents and materials that constitute the record of proceedings on which the findings set forth in this Resolution have been based are 5 located at City of Corona City Hall, 400 S. Vicentia Avenue, Corona, California 92882. The custodian for these records is Joanne Coletta, Planning and Development Director.

SECTION 8. This Resolution shall take effect immediately upon its adoption.

PASSED, APPROVED AND ADOPTED this 19th day of March, 2025.

Mayor of the City of Corona, California
ATTEST:
__
City Clerk of the City of Corona, California
6 CERTIFICATION
I, Sylvia Edwards, City Clerk of the City of Corona, California, do hereby certify that the foregoing Resolution was regularly introduced and adopted by the City Council of the City of Corona, California, at a regular meeting thereof held on the 19th day of March, 2025, by the following vote:

AYES:

NOES:

ABSENT:

ABSTAINED:

IN WITNESS THEREOF, I have hereunto set my hand and affixed the official seal of the City of Corona, California, this 19th day of March, 2025.

City Clerk of the City of Corona, California
[SEAL]
7 EXHIBIT “A”

GENERAL PLAN EIR ADDENDUM
GPA2022-0002
(SEE ATTACHED 293 PAGES)
August 2024 | Addendum to the Corona General Plan Technical Update EIR State Clearinghouse No. 2018081039

WEST ONTARIO AVENUE WIDENING PROJECT
City of Corona
Prepared for:

City of Corona
400 South Vicentia Avenue,
Corona, California 92882
951.736.2262
Prepared by:

PlaceWorks
Contact: Mark Teague, AICP, Managing Principal
3 MacArthur Place, Suite 1100
Santa Ana, California 92707
714.966.9220
[email protected]
www.placeworks.com

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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Table of Contents
August 2024 Page i
Section Page

1. ADDENDUM TO THE CERTIFIED GENERAL PLAN EIR ............................................................. 3

1.1 BACKGROUND, PURPOSE, AND SCOPE.................................................................................................. 3

1.2 ENVIRONMENTAL SETTING....................................................................................................................... 3

1.3 PROJECT DESCRIPTION................................................................................................................................. 5

1.4 PREVIOUS ENVIRONMENTAL DOCUMENTATION........................................................................ 13

1.5 REGULATORY SETTING .............................................................................................................................. 15

2. FINDINGS...................................................................................................................................... 18

3. REFERENCES............................................................................................................................... 21 List of Figures
Figure Page
Figure 1 Regional and Local Location............................................................................................................... 4 Figure 2 Ontario Road Overlay & Construction Area ................................................................................... 6 Figure 3 Aerial Photograph................................................................................................................................. 9 Figure 4 Project Site Photographs...................................................................................................................10 Figure 5 Surrounding Area Photographs........................................................................................................11 Figure 6 Existing and Proposed Roadway Plan.............................................................................................12 List of Tables
Table Page
Table 1 General Plan EIR Significant and Unavoidable Impacts and Impacts of the Proposed Project................................................................................................................................. 14

APPENDICES
Appendix A Corona General Plan EIR MMRP
Appendix B Biological Technical Report and MSHCP Consistency Analysis Appendix C Archaeological Resources and Architectural History Report Appendix D VMT Assessment Memorandum

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Page ii PlaceWorks
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August 2024 Page 3

1. Addendum to the Certified General Plan EIR

1.1 BACKGROUND, PURPOSE, AND SCOPE
This document is an addendum to the Corona General Plan Technical Update Environmental Impact Report (General Plan EIR, EIR), certified on June 3, 2020 (State Clearinghouse Number 2018081039). The addendum demonstrates that the analysis in the General Plan EIR adequately addresses the potential physical impacts associated with the West Ontario Avenue Widening Project (proposed project) and that none of the conditions exist as described in the California Environmental Quality Act (CEQA) Guidelines, Section 15162, that would require preparation of a subsequent EIR or negative declaration.

This addendum relies on the environmental analysis in the General Plan EIR. In accordance with CEQA Guidelines Sections 15148 and 15150, this addendum incorporates the 2020 General Plan EIR (and its constituent parts) by reference. All documents incorporated by reference are available for review on the City’s website:
https://www.coronaca.gov/government/departments-divisions/planning-division/general-plan-update or in person at the City of Corona Planning Division at 400 South Vicentia Avenue, Corona, California, 92882.

1.2 ENVIRONMENTAL SETTING

1.2.1 Project Location
The City of Corona is in the northwestern portion of Riverside County, near the convergence of Los Angeles, Orange, and Riverside Counties, 45 miles southeast of the City of Los Angeles. The City is bordered by the City of Norco to the north, the City of Riverside to the east, and Riverside County to the west and south. The Cleveland National Forest, to the south/southwest, and the Prado Basin, to northeast, border the City.

1.2.2 Project Site
The project site consists of West Ontario Avenue, from the intersection of Via Pacifica to approximately 265 feet before the intersection of Taylor Avenue, and South Lincoln Avenue from the intersection of West Ontario Avenue to Millbrook Road; the project site consists of approximately 20.13 acres. Figure 1, Regional and Local Location, shows the location of the project site in its regional and local contexts.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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1. Addendum to the Certified General Plan EIR

Figure 1 Regional and Local Location

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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1.2.3 Existing and Surrounding Land Uses
The project site is a four-lane roadway; a vacant parcel within the project site is at the intersection of South Lincoln Avenue and Othello Lane. The project site is surrounded by developed uses, predominantly residential uses, as well as commercial, recreational, and institutional uses. Figure 3, Aerial Photograph, shows the existing and surrounding uses from an aerial view, and Figure 4, Project Site Photographs, and Figure 5, Surrounding Area Photographs, show the existing and surrounding uses.

1.3 PROJECT DESCRIPTION

1.3.1 Proposed Project
General Plan Amendment
The focus of the proposed project is to widen West Ontario Avenue from a four-lane roadway to a six-lane roadway to accommodate existing and future traffic; this requires a General Plan Amendment to reflect the change in roadway classification. Figure 6, Existing and Proposed Roadway Plan, shows the existing and proposed roadway classification for the project site.

Construction
The proposed project would construct raised landscaped median islands on West Ontario Avenue from South Main Street to South Lincoln Avenue, as designated in the South Corona Community Facilities Plan. Additionally, the proposed project would complete all missing civil improvements, such as curb and gutter, parkways, sidewalks, driveway approaches, streetlights, catch basins, retaining walls as needed, and utility relocations, on the south side of West Ontario between South Lincoln Avenue and Conejo Street and the east side of South Lincoln Avenue between West Ontario Avenue and Othello Lane. The proposed project would modify the existing signals at the intersections of West Ontario Avenue and South Lincoln Avenue and West Ontario Avenue and Oak Avenue to align with the ultimate street improvements and lane configurations.

Other proposed improvements include constructing a signalized intersection at South Lincoln Avenue and Othello Lane and provide fiberoptic communications to the existing Traffic Management System hub cabinet at West Ontario Avenue and South Lincoln Avenue, constructing ADA-compliant curb ramps at intersections within the project site, extending the existing 8-inch polyvinyl chloride (PVC) reclaimed water main line from the intersection of West Ontario Avenue and South Lincoln Avenue to West Ontario Avenue and South Vicentia Avenue, converting the existing landscape meters from potable water to reclaimed water, constructing sewer laterals for the properties that would be directly affected by the proposed project between South Lincoln Avenue and Conejo Street from West Ontario Avenue to the right-of-way limit on the south side of West Ontario Avenue, and resurfacing West Ontario Avenue and restriping lane configurations to reflect the proposed improvements. Moreover, the property at 2201 South Lincoln Avenue would be modified to accommodate the widening of West Ontario Avenue, however, no residents would be displaced.

Construction is anticipated to last 9 months and will involve the use of equipment such as dump trucks, excavator, trenching machine, bulldozer, heavy roller, jack hammers, cement truck and pumps, roller and asphalt

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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1. Addendum to the Certified General Plan EIR

grinder. Approximately 1,200 cubic yards of material will be exported. Excavation is anticipated to a depth of 4-8 feet in some areas to enable the installation of utilities. Overall, however, the excavation is not expected to go below 3-4 feet along the construction widening route. Section 15.36.130 Time of Grading Work, in the City’s Municipal Code limits the time and days of construction to “7:00 a.m. and 8:00 p.m. Monday through Saturday, excluding holidays, and from 10:00 a.m. to 6:00 p.m. on Sundays and holidays.” The construction project will remove 30 trees that will be addressed in accordance with the Section 12.22 Community Urban Forest and Landscape Guidelines. The trees will either be replaced within the construction area, or in parks as directed by the City’s arborist.

In addition to the construction project, the City intends to grind and overlay a portion of Ontario Avenue from Oak Avenue through the intersection of Via Pacifica as part of the City’s road maintenance program. (See Figure 2 Ontario Avenue Overlay) While this aspect of the project may occur at the same time as the construction, it may also be delayed based on funding.

1.3.2 Modifications to the Certified EIR
The following text is modified to indicate changes to the certified EIR using underline for revised or new language or strikeout for deletions.

Add the following after the third bullet on page 5.17-1 of the certified EIR.  October 23, 2023, Ontario Avenue Widening Vehicle Miles Traveled (VMT) Analysis Memorandum.

The last bullet on page 5.17-7 of the certified EIR is amended as follows:
 West Ontario Avenue is classified as a two-lane collector from Paseo Grande to Mangular Avenue and is classified as a four-lane major arterial from Mangular Avenue to Oak Avenue South Main Street. From Oak Figure 2: Portion of W.

Ontario Avenue between
Oak Avenue and Via
Pacifica. Improvements
include grind and overlay, and possibly sidewalk
and/or access improvement at the intersections.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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Avenue to South Main Street, the road is classified as a six-lane arterial. The road continues as a six-lane arterial to I-15 however the name changes to East Ontario Avenue after the intersection at South Main Street. At From South Main Street to I-15, the road name changes to East Ontario Avenue and is classified as a six-lane major arterial. The roadway is a major east-west corridor that provides access to the neighboring City of El Cerrito and connects to I-15.

Cumulative Analysis
The City of Corona has adopted a threshold of a no net increase in VMT compared to the current General Plan as the cumulative impact criteria. Since the Current General Plan and proposed General Plan Update have the same land use assumptions, the only differences in the scenarios are the road diet on 6th Street, which reduces the number of lanes on 6th Street from four to two in the proposed project.

Table 5.17-9, Cumulative VMT/SP Analysis, identifies that the project would result in a slight (0.03 0.01 percent) increase in VMT/SP compared to the current General Plan. The traffic modeling is revised to reflect the Riverside Transportation Model (RIVCOM) that was updated following certification of this EIR. The previous table used the Corona General Plan Model with cumulative year 2040, the new table uses the RIVCOM information that has a future year 2045. More recent traffic data, and updated regional traffic model with slightly different functionality, and a future year 5 years after certification that accounts for 5 additional years of growth, results in the revised Table 5.17-9. The results of the modeling estimates indicate that vehicles are selecting a slightly longer path of travel given the lane reduction in capacity on 6th Street.

The relatively small increase in VMT is consistent with the relatively small decrease in lane miles (the 1.75 lane mile reduction on 6th Street is 0.3 percent of the total lane miles within the model in the City of Corona and

0.002 percent of the total lane miles in the SCAG region). These results are contrary to the theory of induced travel which has found a significant relationship with increasing highway capacity corresponding to increases in VMT. It follows that a reduction in capacity should yield a reduction in VMT for the region. Given the geographic scale of the SCAG region in the CGPM, it is unlikely that the model is sensitive enough to account for effects of induced travel to be accurately reflected in these VMT estimates. The increase in VMT forecasted is within the model standard error and is likely negligible. However, cumulative impacts are conservatively considered significant because the model results show an increase compared to the current General Plan.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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1. Addendum to the Certified General Plan EIR

Boundary Pop. Employ.

Service
Population
Existing General Plan
Ontario Avenue Amendment (6 Lanes) Change in VMT
Total VMT VMT/SP Total VMT VMT/SP
Total
VMT
VMT/
SP
City of Corona 182,465 91,326 273,791 11,112,259 40.59 11,110,454 40.58 -1,805 -0.01 SOI 45,108 9,608 54,716 2,011,187 36.76 2,010,737 36.75 -451 -0.01 Total City+SOI 227,573 100,934 328,507 13,123,446 39.95 13,121,191 39.94 -2,256 -0.01 Source: Fehr and Peers 2024h
Table 5.17-9 Cumulative VMT/SP Analysis
Scenario
Current General Plan Project Change
Total VMT
Existing
VMT/SP Total VMT
Project
VMT/SP Total VMT VMT/SP
City of Corona 8,672,884 32.3 8,674,797 32.3 1,913 <0.1 SOI 2,701,420 33.8 2,702,890 33.8 1,470 <0.1
Total City + SOI 11,362,777 32.6 11,366,074 32.6 3,297 <0.1 Source: Fehr and Peers 2019b

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Figure 3 Aerial Photograph

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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1. Addendum to the Certified General Plan EIR

Figure 4 Project Site Photographs

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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Figure 5 Surrounding Area Photographs

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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Figure 6 Existing and Proposed Roadway Plan

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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1.4 PREVIOUS ENVIRONMENTAL DOCUMENTATION
The 2020 General Plan EIR found that with the implementation of policies from the General Plan, mitigation measures, and compliance with regulations, there would be less than significant impacts related to aesthetics, biological resources, energy, geology and soils, hazards and hazardous materials, hydrology and water quality, population and housing, public services, recreation, tribal cultural resources, utilities and service systems, and wildlife.

Table 1, General Plan EIR Significant and Unavoidable Impacts and Impacts of the Proposed Project, lists the significant and unavoidable impact determinations of the General Plan EIR and compares the resulting impacts of the proposed project to those determinations. The General Plan EIR determined that implementation of the General Plan would result in significant and unavoidable impacts to agriculture and forestry resources, air quality, cultural resources, greenhouse gas emissions, land use and planning, mineral resources, noise, transportation.

As described below, the proposed project would be within the scope of analysis of the General Plan Update identified in the 2020 Certified EIR. The proposed project would incorporate all applicable mitigation measures for significant and unavoidable impacts and would not create a new significant impact or a substantial increase in the severity of previously identified effects.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

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Table 1 General Plan EIR Significant and Unavoidable Impacts and Impacts of the Proposed Project Environmental Topic
Significant and Unavoidable Impact Determination Resulting Impact of the Proposed Project Agriculture and Forest Resources Impact 5.2-1: Development of the proposed project would convert Farmland to non-agricultural use.

Impact 5.2-2: Development of the proposed
project in the SOI would convert Williamson
Act contract land to non-agricultural use.

The project site is within the City boundaries and is developed and surrounded by developed uses. As shown Figure 5.2-1, Agricultural Resources, of the 2020 General Plan EIR, there is no land designated as Prime Farmland, Unique Farmland, or Farmland of Statewide Importance within the project site. Therefore, the proposed project would not impact agricultural lands. The proposed project would have no impacts on forestlands because there are no lands that qualify as forest or timberland.

Air Quality Impact 5.3-1: The additional population
growth forecasted for the General Plan Update and the associated emissions would not be consistent with the assumptions of
the Air Quality Management Plan.

Impact 5.3-2: Construction activities associated with future development that would be accommodated under the General Plan
Update could generate short-term emissions in exceedance of SCAQMD’s threshold criteria.

Impact 5.3-3: Implementation of the General Plan Update would generate long-term emissions in exceedance of SCAQMD’s
threshold criteria.

Impact 5.3-4: Operation of industrial and
warehousing land uses accommodated under the General Plan Update could expose sensitive receptors to substantial toxic air
contaminant concentrations.

Impact 5.3-5: Development and operation
of land uses accommodated by the General
Plan Update could generate emissions that
exceed the LSTs and expose sensitive receptors to substantial criteria air pollutant concentrations.

The proposed project would accommodate future growth within the City.

The physical changes as a result of the proposed project would generate construction-related emissions of criteria air pollutants and precursors. The proposed project would not include industrial or warehouse projects; the proposed project includes roadway improvements. The proposed project could result in exposure of sensitive receptors due to construction-related toxic air contaminants. However, construction activities would occur throughout the project site and would not be focused in one location; therefore, no one receptor would be exposed to pollutant levels for long periods of time; construction would be temporary. Impacts of the proposed project would be similar to those of other roadway improvements analyzed under the EIR.

Cultural Resources Impact 5.5-1: Buildout of the City of Corona General Plan could impact historic resources.

As detailed in Section 2, Findings, of this addendum, the roadways within the project site and the residence at 2201 South Lincoln Avenue are not considered historic resources. Therefore, the proposed project would not impact historic resources within the project site.

Greenhouse Gas Emissions Impact 5.8-1: Implementation of the proposed General Plan Update would result in a decrease in GHG emissions in horizon
year 2040 from existing baseline and is projected to meet the GHG reduction target established under SB 32, but may not meet the long-term GHG reduction goal under
Executive Order S-03-05.

The proposed project would accommodate future growth in the City.

While construction activities would generate greenhouse gas emissions, construction would be temporary and similar to those of other roadway improvements analyzed under the EIR.

Land Use and Planning Impact 5.11-2: Implementation of the proposed General Plan Update could conflict with the Corona Municipal Airport ALCUP.

The project site is not within the Corona Municipal Airport influence area boundary as shown in Figure 5.9-2, Corona Municipal Airport Compatibility Factors, of the EIR; therefore, the proposed project would not conflict with the Corona Municipal Airport ALCUP.

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1.5 REGULATORY SETTING
According to CEQA Guidelines Section 15164(a), an addendum shall be prepared if some changes or additions to a previously adopted EIR are necessary, but none of the conditions in Sections 15162(a)(1) to (3) calling for the preparation of subsequent EIR have occurred. As stated in CEQA Guidelines Section 15162 (Subsequent EIRs and Negative Declarations):

When an EIR has been certified or negative declaration adopted for a project, no subsequent EIR shall be prepared for that project unless the lead agency determines, on the basis of substantial evidence in the light of the whole record, one or more of the following:
(1) Substantial changes are proposed in the project which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; The proposed project would not make any changes to the land use designation(s) or development assumptions analyzed in the General Plan EIR. Table 1 of this addendum lists the significant impacts identified in the General Plan EIR, and indicates that the impacts of the proposed project would be similar to those analyzed in the General Plan EIR.

Table 1 General Plan EIR Significant and Unavoidable Impacts and Impacts of the Proposed Project Environmental Topic
Significant and Unavoidable Impact Determination Resulting Impact of the Proposed Project Mineral Resources Impact 5.12-1: Project implementation would not result in the loss of availability of
known mineral resource.

The project site is within MRZ-3, as shown in Figure 5.12-1, Mineral Resources Construction Aggregate, of the EIR. MRZ-3 is a zone where the significance of mineral deposits cannot be determined by the available data. The project site and surrounding uses are developed. Therefore, the proposed project would not impact mineral resources.

Noise Impact 5.13-1: Construction activities associated with buildout of the proposed project would result in a temporary increase noise
levels at sensitive receptors.

The proposed project could result in noise exposure at sensitive receptors due to construction activities. However, construction activities would occur throughout the project site and would not be focused in one location; therefore, no one receptor would be exposed to construction noise for long periods of time; construction would be temporary. Impacts of the proposed project would be similar to those of other roadway improvements analyzed under the EIR.

Transportation Impact 5.17-2: Project-related trip generation in combination with existing and proposed cumulative development would result in designated road and/or highways exceeding the Congestion Management
Agency service standards.

Impact 5.17-3: Project-related trip generation in combination with existing and proposed cumulative development would exceed the City’s VMT threshold and would be inconsistent with CEQA Guidelines §
15064.3, subdivision (b).

The proposed project would accommodate future growth in the City. As detailed in Section 2, Findings, of this addendum, the proposed project would result in an increase in VMT of 0.05 percent which is not considered substantial. Therefore, the proposed project would result in similar impacts to those analyzed in the EIR.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

PROJECT

CITY OF CORONA

1. Addendum to the Certified General Plan EIR

(2) Substantial changes occur with respect to the circumstances under which the project is undertaken which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; or The General Plan EIR was certified in 2020, and while development has occurred since certification, the project site is in a developed area of the City. All development that has occurred has been consistent with the certified General Plan. The proposed project would widen West Ontario Avenue and construct associated improvements in order to accommodate future growth in the City. There have been no significant changes in the environment, or severity of the impacts identified in the General Plan EIR and in Table 1 of this addendum. (3) New information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified as complete or negative declaration was adopted, shows any of the following:
(a) The project will have one or more significant effects not discussed in the previous EIR or negative declaration;
(b) Significant effects previously examined will be substantially more severe than shown in the previous EIR;
(c) Mitigation measures or alternatives previously found not to be feasible would in fact be feasible and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measure or alternative; or (d) Mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant effects on the environment, but the project proponents decline to adopt the mitigation measure or alternative.

The project proposes to widen West Ontario Avenue and construct associated improvements, but would not change the land use designations in the project site. The proposed project would require a General Plan Amendment to reflect the change in roadway classification. Therefore, the development yield estimates contained in Table 3-4 of the General Plan remain intact. As all impacts remain as evaluated in the EIR, there is no need for additional mitigation measures.

As the proposed project would not change land use designations or development capacity beyond what was analyzed in the General Plan EIR, it will not trigger any of the conditions in Sections 15162(a)(1) to (3).

The following analysis provides the substantial evidence required by Section 15164(e) to support the finding that a subsequent EIR is not required and an addendum to the General Plan EIR is the appropriate environmental document to address changes to the proposed project.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

PROJECT

CITY OF CORONA

1. Addendum to the Certified General Plan EIR
August 2024 Page 17
As stated in CEQA Guidelines Section 15164, addendum to an EIR:
(a) The lead agency or responsible agency shall prepare an addendum to a previously certified EIR if some changes or additions are necessary but none of the conditions described in Section 15162 calling for preparation of a subsequent EIR have occurred. (b) An addendum to an adopted negative declaration may be prepared if only minor technical changes or additions are necessary or none of the conditions described in Section 15162 calling for the preparation of a subsequent EIR or negative declaration have occurred. (c) An addendum need not be circulated for public review but can be included in or attached to the final EIR or adopted negative declaration.
(d) The decision-making body shall consider the addendum with the final EIR or adopted negative declaration prior to making a decision on the project. (e) A brief explanation of the decision not to prepare a subsequent EIR pursuant to Section 15162 should be included in an addendum to an EIR, the lead agency's findings on the project, or elsewhere in the record. The explanation must be supported by substantial evidence.

As demonstrated in this addendum, the proposed project would not result in impacts that differ from the General Plan EIR and would not trigger the need for preparation of a subsequent or supplemental EIR under the criteria in Sections 15162(a) and 15163(a). The impacts of the proposed project are within the levels and types of environmental impacts disclosed in the General Plan EIR.

Since this addendum does not identify new or substantially greater significant impacts, circulation for public review and comment is not necessary (CEQA Guidelines Section 15164[c]). However, the Corona City Council will consider this addendum at a public meeting prior to the approval of the proposed project (CEQA Guidelines Section 15164[d]). If the Corona City Council approves this addendum, it shall be required to make findings by way of a resolution, including a finding that this addendum provides the basis and substantial evidence for the decision not to prepare a subsequent or supplemental EIR (CEQA Guidelines Section 15164[e]).

August 2024 Page 18

2. Findings
The General Plan contains policies related to land use; housing; community design; historic resources; economic development; parks, recreation, cultural arts, and education; circulation; infrastructure and utilities; public safety; noise; healthy community; and environmental resources. The General Plan EIR included mitigation measures (see Appendix A of this addendum, Corona General Plan EIR MMRP) for the following topics: air quality, biological resources, cultural resources, geology and soils, greenhouse gas emissions, mineral resources, noise, transportation, and tribal cultural resources. The General Plan policies and the City’s existing engineering standards apply to all roadway projects in the General Plan Area, including the project site, and would continue to do so after approval of the proposed project. The discussion in this addendum confirms that the proposed project has been evaluated for significant impacts pursuant to CEQA.

The following identifies the standards in CEQA Guidelines Section 15162 as they relate to the proposed project.

1. No substantial changes are proposed in the project which would require major revisions of the EIR due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects.

The proposed project would widen West Ontario Avenue and construct associated improvements in the project site. The General Plan identifies West Ontario Avenue as a four-lane major arterial roadway, and the proposed project would change this classification to an arterial six-lane major arterial roadway. As demonstrated below, the proposed project does not change the conclusions of the EIR and would not require revisions to the General Plan EIR due to new significant environmental effects or a substantial increase in the severity of previously identified significant effects.

Biological Resources
A biological resources assessment was prepared for the proposed project which determined that no impacts to special-status plant species would occur. While the project site is developed, and there is a low potential for crotch bumble bee, due to its status as a Candidate for state listing and presence of suitable habitat, mitigation would be required (see Mitigation Measure BIO-1 through Mitigation Measure BIO-4 of Appendix A) to reduce impacts to less than significant. Additionally, impacts to bat species classified as Species of Special Concern (SSC) or maternity colonies of non-SSC could occur, and therefore mitigation would be required (see Mitigation Measure BIO-1 through Mitigation Measure BIO-4 of Appendix A) to reduce impacts to less than significant. As the proposed project may impact nesting habitat for nesting bird and raptors, mitigation would be required (see Mitigation Measure BIO-2 through Mitigation Measure BIO-4, and Mitigation Measure BIO-7) to reduce impacts to less than significant.

Given that the project site consists of urban/developed and disturbed land covers, no impacts to sensitive natural communities are anticipated to result from the development of the proposed project (ECORP 2024a). Two aquatic features that are potentially jurisdictional to the U.S. Army Corp of Engineers, Regional

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2. Findings
August 2024 Page 19
Water Quality Control Board, and/or California Department of Fish and Wildlife occur within the project site. Should impacts to these features be necessary, a formal aquatic resources delineation would be conducted to determine if it is subject to the jurisdiction of these agencies, and coordination would be required.

Additionally, preparation of a Determination of Biologically Equivalent or Superior Preservation would be required to satisfy the Multiple Species Habitat Conservation Plan (MSHCP) requirements for impacts to riverine areas within the project site if impacts are unavoidable. The proposed project would implement Mitigation Measure BIO-5 to reduce impacts (see Appendix A).

The project site is developed and surrounded by developed uses with frequent roadway disturbances. As such, no migratory wildlife corridors were identified within the project site and no impacts are expected to occur (ECORP 2024a). Additionally, the project site is located within the planning area for the MSHCP, but is outside of any cell groups, criteria cells, and subunit designations. In accordance with the MSHCP, the proposed project would prepare a Determination of Biologically Equivalent or Superior Preservation and implement Mitigation Measure BIO-5 (see Appendix A) to reduce impacts to the aquatic features in the project site. The project site is not within a Narrow Endemic Plant Species Survey Area and Urban/Wildland Interface, in accordance with MSHCP Section 6.1.3, Section 6.1.4, respectively. A small portion of the project site is within a burrowing owl survey area as designated by the MSHCP; however, according to the field reconnaissance survey for potential burrowing owl habitat, neither the area designated as a burrowing owl survey area nor the remainder of the project site offers suitable habitat for burrowing owl (ECORP 2024a). Therefore, in accordance with Section 6.3.2 of the MSHCP, no further surveys are required.

The proposed project would not result in substantially more severe or new significant impacts pertaining to biological resources, and upon compliance with the MSCHP, state and federal regulations, and implementation of the mitigation measures from the General Plan EIR, impacts would be less than significant.

Cultural Resources
According to the Archaeological Resources and Architectural History Report, five historic built environment resources were identified within the project site, including the residential property at 2201 South Lincoln Avenue. These resources were evaluated for their significance, and it was determined that none of them are considered historical resources for the purposes of CEQA. No direct or indirect impacts to historical resources were identified. While the project site has been previously disturbed, and any subsurface archaeological deposits would have been discovered during construction, there is always a possibility that subsurface cultural resources may be present (ECORP 2024b). Implementation of Mitigation Measure CUL-5 (see Appendix A) would reduce potential impacts to archaeological resources to less than significant.

The proposed project would not result in substantially more severe or new significant impacts pertaining to cultural resources, and upon compliance with state and federal regulations, and implementation of the Mitigation Measure CUL-5 from the General Plan EIR, impacts would be less than significant.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

PROJECT

CITY OF CORONA

2. Findings

Vehicle Miles Traveled
Using the same method of analysis as the General Plan EIR, the VMT slightly decreases. This is because the project removes an existing bottleneck along Ontario, which makes travel for residents more convenient, slightly reducing trip lengths as they no longer need to avoid this segment. While the small project adds incrementally to the overall roadway network and could increase VMT regionally, including regional through trips that cut through Corona, the regional VMT trips are not included in the General Plan EIR analysis. As such, the proposed project reduces overall VMT as reported in the General Plan EIR, and therefore there are no new or increased impacts.

2. There is no new information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified as complete demonstrating that the project will have one or more significant effects not discussed in the previous EIR.

As shown in Table 1 and discussed above, the proposed project would not result in new or substantially more significant impacts than what was analyzed in the 2020 General Plan EIR. Additionally, the policies and mitigation measures identified in the General Plan EIR (see Appendix A of this addendum) would continue to apply to all development in the City, including the proposed project, and would have the same mitigating effects as disclosed in the General Plan EIR. Given the recent certification of the General Plan EIR and the proposed project’s consistency with the General Plan land uses, there is no new information that was not known and could not have been known at the time the General Plan EIR was certified demonstrating that the proposed project would have one or more significant effects not discussed in the previous EIR. Impacts would be the same as those disclosed in the certified General Plan EIR.

3. There is no new information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified as complete demonstrating that mitigation measures or alternatives previously found not to be feasible would in fact be feasible and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measure or alternative.

As shown in Table 1 and discussed above, the proposed project would not result in new or substantially more significant impacts than what was analyzed in the 2020 General Plan EIR. The proposed project would not result in changes to the City’s adopted land use plan. However, a General Plan Amendment would be required to reflect the change in roadway classification from a four-lane major arterial to a sixlane major arterial. All policies and mitigation measures identified in the General Plan EIR would continue to apply to all development in the City, including the proposed project, and would have the same mitigating effect as disclosed in the General Plan EIR. The proposed project would not change the assumptions described in the General Plan EIR, and therefore would not substantially change the conclusions of the EIR or require new mitigation measures.

4. There is no new information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified as complete demonstrating that mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant

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2. Findings
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effects on the environment, but the project proponents decline to adopt the mitigation measure or alternative.

The proposed project does not create new impacts or the need for additional mitigation measures. The proposed project would widen West Ontario Avenue and construct associated improvements, and does not propose any land use changes. As such, the resulting impacts would be similar as those disclosed in the General Plan EIR. Therefore, no new mitigation measures or alternatives to the proposed project would be required.

3. References
ECORP Consulting, Inc. (ECORP). 2024a, February. Biological Technical Report and MSHCP Consistency Analysis. Appendix B.
_____. 2024b, February. Archaeological Resources and Architectural History Report. Appendix C.

Fehr and Peers. 2023, October 23. Ontario Avenue Widening Vehicle Miles Traveled (VMT) Analysis Memorandum. Appendix D.

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

PROJECT

CITY OF CORONA
Appendix

Appendix A. Corona General Plan EIR MMRP
March 2020 | Mitigation Monitoring and Reporting Program State Clearinghouse No. 2018081039

CORONA GENERAL PLAN

TECHNICAL UPDATE
for City of Corona
Prepared for:

City of Corona
Contact: Joanne Coletta, Community Development Director 400 S. Vicentia Avenue
Corona, California 92882
951.736.2434
Prepared by:

PlaceWorks
Contact: Nicole Vermilion, Principal
3 MacArthur Place, Suite 1100
Santa Ana, California 92707
714.966.9220
[email protected]
www.placeworks.com
\

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA
Table of Contents
March 2020 Page i
Section Page

1. INTRODUCTION.............................................................................................................................. 1

1.1 PURPOSE OF MITIGATION MONITORING AND REPORTING PROGRAM............................ 1

1.2 PROJECT LOCATION ....................................................................................................................................... 1

1.3 PROJECT DESCRIPTION................................................................................................................................. 2

1.4 ENVIRONMENTAL IMPACTS........................................................................................................................ 2

2. MITIGATION MONITORING REQUIREMENTS.............................................................................. 5

2.1 CATEGORIZED MITIGATION MEASURES/MATRIX......................................................................... 5

3. REPORT PREPARATION ............................................................................................................. 31

3.1 LIST OF PREPARERS....................................................................................................................................... 31

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA
Table of Contents
Page ii PlaceWorks
List of Tables
Table Page
Table 1 Mitigation Monitoring Requirements................................................................................................ 7 March 2020 Page 1

1. Introduction

1.1 PURPOSE OF MITIGATION MONITORING AND REPORTING

PROGRAM
This Mitigation Monitoring and Reporting Program (MMRP) has been developed to provide a vehicle by which to monitor mitigation measures and conditions of approval outlined in the Draft Environmental Impact Report (DEIR), State Clearinghouse No. 2018081039. The Mitigation Monitoring and Reporting Program has been prepared in conformance with Section 21081.6 of the Public Resources Code and Corona Monitoring Requirements. Section 21081.6 states:
(a) When making findings required by paragraph (1) of subdivision (a) of Section 21081 or when adopting a mitigated negative declaration pursuant to paragraph (2) of subdivision (c) of Section 21080, the following requirements shall apply:
(1) The public agency shall adopt a reporting or monitoring program for the changes made to the project or conditions of project approval, adopted in order to mitigate or avoid significant effects on the environment. The reporting or monitoring program shall be designed to ensure compliance during project implementation. For those changes which have been required or incorporated into the project at the request of a responsible agency or a public agency having jurisdiction by law over natural resources affected by the project, that agency shall, if so requested by the lead or responsible agency, prepare and submit a proposed reporting or monitoring program.
(2) The lead agency shall specify the location and custodian of the documents or other material which constitute the record of proceedings upon which its decision is based.

1.2 PROJECT LOCATION
The City of Corona is located in the northwestern portion of Riverside County, near the convergence of Los Angeles, Orange, and Riverside Counties, 45 miles southeast of the City of Los Angeles. Corona is located in a valley, framed by mountains and the Prado Basin. Original settlements focused development in an area within and adjacent to Grand Boulevard. The City is bordered by the City of Norco to the north, the City of Riverside to the east, and Riverside County to the west and south. The Cleveland National Forest to the south/southwest and the Prado Basin to northeast border the City; these natural areas are barriers to the future outward growth of Corona.

Two geographical areas are within the “planning area” covered by the Corona General Plan, the City’s corporate limits (City) and its Sphere of Influence (SOI). As defined by the City and the Riverside County Local Agency Formation Commission, the SOI represents the logical service area of the city. Corona includes 39 square miles,

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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1. Introduction

plus an additional 32 square miles within its SOI. The SOI includes three geographically distinct areas to the west, east, and south of Corona’s incorporated borders:
 The West Sphere encompasses the Prado Basin, Coronita, and the Foothill area.  The East Sphere includes the areas of Home Gardens, Eagle Valley East, and El Cerrito.  Temescal Canyon makes up the South Sphere.

1.3 PROJECT DESCRIPTION
The proposed General Plan is an interim technical update of the current General Plan, with the exception of the latest updated Housing Element. The update includes the following chapters with individual elements that address all the required topics in state law:
 Land Use Element
 Housing Element
 Community Design Element
 Historic Resources Element
 Economic Development Element
 Parks, Recreation, Cultural Arts, & Education Element  Circulation Element
 Infrastructure and Utilities Element
 Public Safety Element
 Noise Element
 Healthy Community Element
 Environmental Resources Element
The General Plan Update would result in a potential buildout total of 70,939 housing units, 241,928 residents, 82,191,657 nonresidential square feet, and 106,474 jobs in the City and sphere of influence (SOI). Compared to existing conditions, the proposed project would result in an increase of 11,511 units, 39,298 residents, 26,476,352 nonresidential square feet, and 31,156 jobs in the City and its SOI.

The City of Corona is also proposing to update the City’s Climate Action Plan (CAP). The CAP identifies greenhouse gas (GHG) reduction measures that allow the City to continue reductions consistent with the State’s interim emissions reduction goal of lowering emissions 40 percent below 1990 levels by 2030 under Senate Bill 32 (SB 32) and long-term goal of 80 percent below 1990 levels by 2050 under Executive Order S-03-05.

1.4 ENVIRONMENTAL IMPACTS

1.4.1 Impacts Considered No Impact or Less Than Significant The EIR identified various thresholds from the CEQA Guidelines among a number of environmental categories that would not significantly impact the proposed project as identified in Chapter 5, Environmental

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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March 2020 Page 3
Analysis, and therefore, did not require mitigation. Impacts to the following environmental resources were found to be less than significant or no impact:
 Aesthetics
 Energy
 Hazards and Hazardous Materials
 Hydrology and Water Quality
 Land Use and Planning
 Population and Housing
 Public Services
 Recreation
 Utilities and Service Systems
 Wildlife

1.4.2 Potentially Significant Adverse Impacts That Can Be Mitigated, Avoided, or Substantially Lessened
The EIR concluded that the proposed project could result in one or more potentially significant impacts in the following topic areas:
 Biological Resources
 Geology and Soils
 Tribal Cultural Resources
However, the EIR also found that these impacts would be reduced, avoided, or substantially lessened through the implementation of mitigation measures, which are listed in Table 1.

1.4.3 Unavoidable Significant Adverse Impacts
The following impacts would remain significant and unavoidable after implementation of required mitigation, as identified in the EIR:
 Air Quality
 Agricultural and Forestry Resources
 Cultural Resources
 Greenhouse Gas Emissions
 Mineral Resources
 Noise
 Transportation

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2. Mitigation Monitoring Requirements

2.1 CATEGORIZED MITIGATION MEASURES/MATRIX
Project-specific mitigation measures have been categorized in matrix format, as shown in Table 1, Mitigation Monitoring Requirements. The matrix identifies the environmental factor, specific mitigation measures, schedule, and responsible monitor. The mitigation matrix will serve as the basis for scheduling the implementation of, and compliance with, all mitigation measures.

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)

AIR QUALITY
AQ-1 Prior to discretionary approval by the City of Corona for development projects subject to CEQA (California Environmental Quality Act) review (i.e., non-exempt projects), project applicants shall prepare and submit a technical assessment evaluating potential project construction-related air quality impacts to the City of Corona Community Development Department for review and approval. The evaluation shall be prepared in conformance with South Coast Air Quality Management District (SCAQMD) methodology for assessing air quality impacts. If constructionrelated criteria air pollutants are determined to have the potential to exceed the SCAQMD-adopted thresholds of significance, the City of Corona shall require that applicants for new development projects incorporate mitigation measures to reduce air pollutant emissions during construction activities. These identified measures shall be incorporated into all appropriate construction documents (e.g., construction management plans) submitted to the City and shall be verified by the City’s Planning Division.

Mitigation measures to reduce construction-related emissions could include, but are not limited to:
• Requiring fugitive-dust control measures that exceed
SCAQMD’s Rule 403, such as:
­ Use of nontoxic soil stabilizers to reduce wind erosion. ­ Applying water every four hours to active soil-disturbing activities.
­ Tarping and/or maintaining a minimum of 24 inches of
freeboard on trucks hauling dirt, sand, soil, or other loose materials.
• Using construction equipment rated by the United States Environmental Protection Agency as having Tier 3 (model year 2006 or newer) or Tier 4 (model year 2008 or newer) emission limits, applicable for engines between 50 and 750 horsepower.
• Technical Assessment:

Project Applicant and
City of Corona Planning
Division (technical
assessment);
• Construction
Measures: Construction
Contractor
• Technical Assessment:

Prior to Project Approval
• Construction Measures:

During Construction
Activities
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
• Ensuring that construction equipment is properly serviced and maintained to the manufacturer’s standards.
• Limiting nonessential idling of construction equipment to no more than five consecutive minutes.
• Limiting onsite vehicle travel speeds on unpaved roads to 15 miles per hour.
• Installing wheel washers for all exiting trucks or wash off all trucks and equipment leaving the project area.
• Using Super-Compliant VOC paints for coating of architectural surfaces whenever possible. A list of Super-Compliant
architectural coating manufactures can be found on the
SCAQMD’s website at http://www.aqmd.gov/docs/defaultsource/planning/architectural-coatings/super-compliant-manflist.pdf?sfvrsn=71.

AQ-2 • Prior to discretionary approval by the City of Corona for development projects subject to CEQA (California
Environmental Quality Act) review (i.e., non-exempt projects), project applicants shall prepare and submit a technical assessment evaluating potential project operation phaserelated air quality impacts to the City of Corona Community Development Department for review and approval. The
evaluation shall be prepared in conformance with South Coast Air Quality Management District (SCAQMD) methodology in assessing air quality impacts. If operation-related air pollutants are determined to have the potential to exceed the SCAQMDadopted thresholds of significance, the City of Corona Community Development Department shall require that
applicants for new development projects incorporate
mitigation measures to reduce air pollutant emissions during operational activities. The identified measures shall be included as part of the conditions of approval. Possible Technical Assessment:

Project Applicant and City
of Corona Planning
Division
Prior to Discretionary
Approval
City of Corona Community
Development Department

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2. Mitigation Monitoring Requirements
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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
mitigation measures to reduce long-term emissions could include, but are not limited to the following:
• For site-specific development that requires refrigerated vehicles, the construction documents shall demonstrate an adequate number of electrical service connections at loading docks for plug-in of the anticipated number of refrigerated trailers to reduce idling time and emissions.
• Applicants for manufacturing and light industrial uses shall consider energy storage and combined heat and power in
appropriate applications to optimize renewable energy
generation systems and avoid peak energy use.
• Site-specific developments with truck delivery and loading areas and truck parking spaces shall include signage as a reminder to limit idling of vehicles while parked for
loading/unloading in accordance with California Air Resources Board Rule 2845 (13 CCR Chapter 10 § 2485).
• Provide changing/shower facilities as specified in Section A5.106.4.3 of the CALGreen Code (Nonresidential Voluntary Measures).
• Provide bicycle parking facilities per Section A4.106.9 (Residential Voluntary Measures) of the CALGreen Code.
• Provide preferential parking spaces for low-emitting, fuelefficient, and carpool/van vehicles per Section A5.106.5.1 of the CALGreen Code (Nonresidential Voluntary Measures).
• Provide facilities to support electric charging stations per Section A5.106.5.3 (Nonresidential Voluntary Measures) and Section A5.106.8.2 (Residential Voluntary Measures) of the CALGreen Code.
• Applicant-provided appliances shall be Energy Star-certified appliances or appliances of equivalent energy efficiency (e.g., dishwashers, refrigerators, clothes washers, and dryers).

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
Installation of Energy Star-certified or equivalent appliances shall be verified by Building & Safety during plan check. • Applicants for future development projects along existing and planned transit routes shall coordinate with the City of Corona and Riverside Transit to ensure that bus pad and shelter improvements are incorporated, as appropriate.

AQ-3 Prior to discretionary approval by the City of Corona, project applicants for new industrial or warehousing development projects that 1) have the potential to generate 100 or more diesel truck trips per day or have 40 or more trucks with operating diesel-powered transport refrigeration units, and 2) are within 1,000 feet of a sensitive land use (e.g., residential, schools, hospitals, or nursing homes), as measured from the property line of the project to the property line of the nearest sensitive use, shall submit a health risk assessment (HRA) to the City of Corona Community Development Department for review and approval.

The HRA shall be prepared in accordance with policies and procedures of the state Office of Environmental Health Hazard Assessment and the South Coast Air Quality Management
District. If the HRA shows that the incremental cancer risk and/or noncancer hazard index exceed the respective thresholds, as established by the SCAQMD at the time a project is considered, the project applicant will be required to identify and demonstrate that best available control technologies for toxics (T-BACTs), including appropriate enforcement mechanisms, are capable of reducing potential cancer and noncancer risks to an acceptable level. T-BACTs may include, but are not limited to, restricting idling onsite or electrifying warehousing docks to reduce diesel particulate matter, or requiring use of newer equipment and/or vehicles. T-BACTs identified in the HRA shall be identified as mitigation measures in the environmental document and/or incorporated into the site plan.

Project Applicant and City
of Corona Planning
Division
Prior to Project Approval City of Corona Community
Development Department

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
AQ-4 Prior to discretionary approval by the City of Corona, if it is determined that a development project has the potential to emit nuisance odors beyond the property line, an odor management plan shall be prepared by the project applicant and submitted to the City of Corona Community Development Department for review and approval. Facilities that have the potential to generate nuisance odors include, but are not limited to:
• Wastewater treatment plants
• Composting, green waste, or recycling facilities
• Fiberglass manufacturing facilities
• Painting/coating operations
• Large-capacity coffee roasters
• Food-processing facilities
The odor management plan shall demonstrate compliance with the South Coast Air Quality Management District’s Rule 402 for nuisance odors. The Odor Management Plan shall identify the best available control technologies for toxics (T-BACTs) that will be utilized to reduce potential odors to acceptable levels, including appropriate enforcement mechanisms. T-BACTs may include but are not limited to scrubbers (i.e., air pollution control devices) at the industrial facility. T-BACTs identified in the odor management plan shall be identified as mitigation measures in the environmental document prepared for the development project and/or incorporated into the project’s site plan.

Project Applicant and City
of Corona Planning
Division
Prior to Project Approval City of Corona Community
Development Department

BIOLOGICAL RESOURCES
BIO-1 Applicants for future development projects shall include a biological resources survey. The biological resources survey shall be conducted by a qualified biologist. The biological resources survey shall include, but not be limited to:
• An analysis of available literature and biological databases, such as the California Natural Diversity Database, to
Project Applicant in
consultation with a
Qualified Biologist and City
of Corona Planning
Division
Prior to Project Approval City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
determine sensitive biological resources that have been reported historically from the proposed development project vicinity.
• A review of current land use and land ownership within the proposed development project vicinity.
• An assessment and mapping of vegetation communities
present within the proposed development project vicinity. • An evaluation of potential local and regional wildlife movement corridors.
• A general assessment of potential jurisdictional areas, including wetlands and riparian habitats.

Habitat Assessment. If the proposed development project site supports vegetation communities that may provide habitat for plant or wildlife species, a focused habitat assessment shall be conducted by a qualified biologist to determine the potential for special status plant and/or animal species to occur within or adjacent to the proposed development project area. Adjoining properties should also be surveyed where direct or indirect project effects, such as those from fuel modification or herbicide application, could potentially extend off-site. If feasible, the habitat assessment should be conducted during nondrought years. Vegetation communities should be classified and mapped to the alliance or association level using classification methods and membership rules according to A Manual of California Vegetation, 2nd edition (2009).

Focused Surveys. If one or more special status species has the potential to occur within the proposed development project area, focused species surveys shall be conducted to determine the presence/absence of these species to adequately evaluate potential direct and/or indirect impacts to these species. The focused survey shall record the location and boundary of special

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2. Mitigation Monitoring Requirements
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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
status species by use of global positioning system (GPS). The number of individuals in each special status plant population shall be provided as counted (if population is small) or estimated (if population is large). If applicable, information about the percentage of individuals in each life stage, such as seedlings vs. reproductive individuals, should be provided. If feasible, images of the target species and representative habitats should be included to support information and descriptions.

Preconstruction Surveys. If construction activities are not initiated immediately after focused surveys have been
completed, additional preconstruction special status species surveys may be required to ensure impacts are avoided or minimized to the extent feasible. If preconstruction activities are required, a qualified biologist would perform these surveys as required for each special status species that is known to occur or has a potential to occur within or adjacent to the proposed development project area.

Biological Resources Report. The results of the biological survey for proposed development projects with no significant impacts may be presented in a biological survey letter report.

For proposed development projects with significant impacts that require mitigation to reduce the impacts to below a level of significance, the results of the biological survey shall be presented in a biological technical report.

BIO-2 If sensitive biological resources are identified within or adjacent to the proposed development project area, the construction limits shall be clearly flagged to ensure impacts to sensitive biological resources are avoided or minimized to the extent feasible. Prior to implementing construction activities, a qualified biologist shall verify that the flagging clearly delineates the construction limits and sensitive resources to be avoided.

Qualified Biologist in
coordination with the
Construction Contractor
Prior to Construction
Activities
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
BIO-3 If sensitive biological resources are known to occur within or adjacent to the proposed development project area, a projectspecific contractor training program shall be developed and implemented to educate project contractors on the sensitive biological resources within and adjacent to the proposed development project area and measures being implemented to avoid and/or minimize impacts to these species. A qualified biologist shall develop and implement the contractor training program.

Qualified Biologist in
coordination with the
Construction Contractor
Prior to Construction
Activities
City of Corona Community
Development Department
BIO-4 If sensitive biological resources are present within or adjacent to the proposed development project area and impacts may occur from implementation of construction activities, a qualified biological monitor may be required during a portion or all of the construction activities to ensure impacts to the sensitive biological resources are avoided or minimized to the extent feasible. The specific biological monitoring requirements shall be evaluated on a project-by-project basis. The qualified biological monitor shall be approved by the City on a project-byproject basis based on applicable experience with the sensitive biological resources that may be impacted.

Qualified Biologist in
coordination with the
Construction Contractor
and the City of Corona
Planning Division
During Construction Activities City of Corona Community Development Department
BIO-5 The City of Corona shall require applicants of development project that have the potential to affect jurisdictional resources to contract with a qualified biologist to conduct a jurisdictional delineation following the methods outlined in the 1987 USACE Wetland Delineation Manual and the Regional Supplement to the USACE Wetland Delineation Manual: Arid West Region
(USACE 2008) to map the extent of wetlands and nonwetland waters, determine jurisdiction, and assess potential impacts.

The results of the delineation shall be presented in a wetland delineation report and shall be incorporated into the CEQA document(s) required for approval and permitting of the proposed development project.
• Jurisdictional
Delineation: Project
Applicant in
consultation with a
Qualified Biologist
• Permits: Qualified
Biologist in consultation
with the regulatory
authorities
• Jurisdictional Delineation:

Prior to Project Approval
• Permits: Prior to Issuance
of a Grading Permit
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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2. Mitigation Monitoring Requirements
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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
Applicants of development projects that have the potential to impact jurisdictional features, as identified in the wetland delineation letter report, shall obtain permits and authorizations from the Army Corps of Engineers, California Department of Fish and Wildlife, and/or Santa Ana Regional Water Quality Control Board. The regulatory agency authorization(s) would include impact avoidance and minimization measures as well as mitigation measures for unavoidable impacts. Specific
avoidance, minimization, and mitigation measures for impacts to jurisdictional resources shall be determined through discussions with the regulatory agencies during the proposed development project permitting process and may include monetary
contributions to a mitigation bank or habitat creation, restoration, or enhancement.

BIO-6 The City of Corona shall require a habitat connectivity/wildlife corridor evaluation for future development projects that may impact existing connectivity areas and wildlife linkages identified in Figure 5.4-7, Potential Wildlife Movement Corridors, of the Draft EIR, which includes the Bedford Wash to Lake Mathews Estelle Mountain Reserve Corridor. The results of the evaluation shall be incorporated into the project’s biological report required under Mitigation Measure BIO-1. The evaluation shall also identify project design features that would reduce potential impacts and maintain habitat and wildlife movement. To this end, the City shall incorporate the following measures, to the extent practicable, for projects impacting wildlife movement corridors:
• Conduct a habitat connectivity/wildlife corridor evaluation for future development projects.
• Adhere to low density zoning standards.
• Encourage clustering of development.
• Avoid known sensitive biological resources.

Project Applicant in
consultation with a
Qualified Biologist and the
City of Corona Planning
Division
Prior to Project Approval City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
• Provide shielded lighting adjacent to sensitive habitat areas. • Encourage development plans that maximize wildlife
movement.
• Provide buffers between development and wetland/riparian areas.
• Protect wetland/riparian areas through regulatory agency permitting process.
• Encourage wildlife-passable fence designs (e.g., 3-strand barbless wire fence) on property boundaries.
• Encourage preservation of native habitat on the undeveloped remainder of developed parcels.
• Minimize road/driveway development to help prevent loss of habitat due to roadkill and habitat loss.
• Use native, drought-resistant plant species in landscape design.
• Encourage participation in local/regional recreational trail design efforts.

BIO-7 The City of Corona shall require applicants for future development projects to contract with a qualified biologist to conduct a preconstruction general nesting bird survey within all suitable nesting habitats that may be impacted by active construction during general avian breeding season (February 1 through August 31). The preconstruction surveys shall be conducted no more than 7 days prior to initiation of construction.

If no active avian nests are identified within the proposed development project area or within a 300-foot buffer of the proposed development project area, no further mitigation is necessary. If active nests of avian species covered by the Fish and Game Code are detected within the proposed development project area or within a 300-foot buffer of the proposed Qualified Biologist in
coordination with the
Construction Contactor
Prior to Construction
Activities and During
Construction Activities
City of Corona Community
Development Department

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
development project area, construction shall be halted until the young have fledged, until a qualified biologist has determined the nest is inactive, or until appropriate mitigation measures that respond to the specific situation have been developed and implemented in consultation with the regulatory agencies. Based on the discretion of the qualified biologist, the 300-foot buffer may be expanded as appropriate to the species.

CULTURAL RESOURCES
CUL-1 Prior to any construction activities that may affect historical resources (i.e., structures 45 years or older), a historical resources assessment shall be performed by an architectural historian or historian who meets the Secretary of the Interior’s Professionally Qualified Standards (PQS) in architectural history or history. This shall include a records search to determine if any resources that may be potentially affected by the project have been previously recorded, evaluated, and/or designated in the National Register of Historic Places (NRHP), California Register of Historic Resources (CRHR), or Corona Register of Historic Resources. Following the records search, the qualified architectural historian or historian shall conduct a
reconnaissance-level and/or intensive-level survey in
accordance with the California Office of Historic Preservation (OHP) guidelines to identify any previously unrecorded potential historical resources that may be potentially affected by the proposed project. Pursuant to the definition of a historical resource under CEQA, potential historical resources shall be evaluated under a developed historic context.

Project Applicant in
coordination with an
Architectural Historian or
Historian
Prior to Project Approval City of Corona Community
Development Department
CUL-2 To ensure that projects requiring the relocation, rehabilitation, or alteration of a historical resource not impair its significance, the Secretary of the Interior’s Standards for the Treatments of Historic Properties shall be used to the maximum extent possible. The application of the standards shall be overseen by a qualified architectural historian or historic architect meeting the PQS. Prior to any construction activities that may affect the Project Applicant in
coordination with an
Architectural Historian or
Historian
Prior to Construction
Activities
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
historical resource, a report identifying and specifying the treatment of character-defining features and construction activities shall be provided to the City of Corona.

CUL-3 If a proposed project would result in the demolition or significant alteration of a historical resource, it cannot be mitigated to a less than significant level. However, recordation of the resource prior to construction activities will assist in reducing adverse impacts to the resource to the greatest extent possible. Recordation shall take the form of Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER), or Historic American Landscape Survey (HALS) documentation, and shall be performed by an architectural historian or historian who meets the PQS. Documentation shall include an
architectural and historical narrative; medium- or large-format black and white photographs, negatives, and prints; and supplementary information such as building plans and
elevations, and/or historic photographs. Documentation shall be reproduced on archival paper and placed in appropriate local, state, or federal institutions. The specific scope and details of documentation would be developed at the project level.

Project Applicant in
coordination with an
Architectural Historian or
Historian
Prior to Issuance of a
Demolition Permit
City of Corona Community
Development Department
CUL-4 If cultural resources that are eligible for listing to the NRHP, CRHR, or Corona Register of Historic Resources are identified within or adjacent to the proposed development, the
construction limits shall be clearly flagged to assure impacts to eligible cultural resources are avoided or minimized to the extent feasible. Prior to implementing construction activities, a qualified archaeologist shall verify that the flagging clearly delineates the construction limits and eligible resources to be avoided. Since the location of some eligible cultural resources is confidential, these resources will be flagged as environmentally sensitive areas (ESA).

Qualified Archaeologist in
coordination with the
Construction Contractor
Prior to Construction
Activities
City of Corona Community
Development Department
CUL-5 To determine the archaeological sensitivity for discretionary projects within the City, an archaeological resources
assessment shall be performed under the supervision of an • Technical Assessment:

Qualified Archaeologist
in coordination with the
• Technical Assessment:

Prior to Project Approval
City of Corona Community
Development Department

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
archaeologist that meets the Secretary of the Interior’s Professionally Qualified Standards (PQS) in either prehistoric or historic archaeology. The assessments shall include a California Historical Resources Information System (CHRIS) records search and a search of the Sacred Lands File (SLF) maintained by the Native American Heritage Commission (NAHC). The
records searches shall determine if the proposed project has been previously surveyed for archaeological resources, identify and characterize the results of previous cultural resource surveys, and disclose any cultural resources that have been recorded and/or evaluated. A Phase I pedestrian survey shall be undertaken in areas that are undeveloped to locate any surface cultural materials.
a. If potentially significant archaeological resources are identified through an archaeological resources
assessment, and impacts to these resources cannot be
avoided, a Phase II Testing and Evaluation investigation shall be performed by an archaeologist who meets the
PQS prior to any construction-related ground-disturbing activities to determine significance. If resources determined significant or unique through Phase II testing, and site avoidance is not possible, appropriate site-specific
mitigation measures shall be established and undertaken.

These might include a Phase III data recovery program that would be implemented by a qualified archaeologist and
shall be performed in accordance with the Office of Historic Preservation’s Archaeological Resource Management
Reports (ARMR): Recommended Contents and Format
(1990) and Guidelines for Archaeological Research
Designs (1991).
b. If the archaeological assessment did not identify potentially significant archaeological resources within the proposed General Plan area but indicated the area to be highly
sensitive for archaeological resources, a qualified
archaeologist shall monitor all ground-disturbing
Project Applicant and
the City of Corona
Planning Division
• Construction Measures:

Qualified Archaeologist
in coordination with the
Construction Contractor
• Construction Measures:

Prior to and During
Construction Activities

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
construction and pre-construction activities in areas with previously undisturbed soil. The archaeologist shall inform all construction personnel prior to construction activities of the proper procedures in the event of an archaeological discovery. The training shall be held in conjunction with the project’s initial on-site safety meeting, and shall explain the importance and legal basis for the protection of significant archaeological resources. In the event that archaeological resources (artifacts or features) are exposed during
ground-disturbing activities, construction activities in the immediate vicinity of the discovery shall be halted while the resources are evaluated for significance by an
archaeologist who meets the PQS. If the discovery proves to be significant, it shall be curated with a recognized scientific or educational repository.
c. If the archaeological assessment did not identify potentially significant archaeological resources, but indicates the area to be of medium sensitivity for archaeological resources, an archaeologist who meets the PQS shall be retained on an on-call basis. The archaeologist shall inform all
construction personnel prior to construction activities about the proper procedures in the event of an archaeological discovery. The training shall be held in conjunction with the project’s initial on-site safety meeting, and shall explain the importance and legal basis for the protection of significant archaeological resources. In the event that archaeological resources (artifacts or features) are exposed during
ground-disturbing activities, construction activities in the immediate vicinity of the discovery shall be halted while the on-call archaeologist is contacted. If the discovery proves to be significant, it shall be curated with a recognized scientific or educational repository.

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)

GEOLOGY AND SOILS
GEO-1 High and Low-to-High Sensitivity. In areas designated as having “high” or “low-to-high” sensitivity for paleontological resources, the project applicant shall be required to submit a Paleontological Resources Monitoring and Mitigation Plan (PRMMP). The PRMMP shall be prepared by a Qualified
Paleontologist meeting the standards of Society of Vertebrate Paleontology (2010). The plan shall address specifics of monitoring and mitigation based on the project area and project’s construction plan, and shall take into account updated geologic mapping, geotechnical data, updated paleontological records searches, and changes to the regulatory framework at the time of analysis. The PRMMP shall be submitted to the City of Corona’s Community Development Department prior to
approval of a grading permit.

Qualified Paleontologist in
coordination with the
Project Applicant and the
City of Corona Planning
Division
Prior to Approval of a
Grading Permit
City of Corona Community
Development Department
GEO-2 High Sensitivity. Projects involving ground disturbances in previously undisturbed areas mapped as having “high”
paleontological sensitivity shall be monitored by a qualified paleontological monitor on a full-time basis, under the supervision of the Qualified Paleontologist. Monitoring shall include inspection of exposed sedimentary units during active excavations within sensitive geologic sediments. The monitor shall have authority to temporarily divert activity away from exposed fossils to evaluate the significance of the find and, if the fossils are determined to be significant, professionally and efficiently recover the fossil specimens and collect associated data. The paleontological monitor shall use field data forms to record pertinent location and geologic data, measure
stratigraphic sections (if applicable), and collect appropriate sediment samples from any fossil localities.

Qualified Paleontologist in
coordination with the
Construction Contractor
Prior to and During GroundDisturbing ActivitiesCity of Corona Community Development Department
GEO-3 Low-to-High Sensitivity. Projects involving ground disturbance in previously undisturbed areas mapped with “low-to-high” paleontological sensitivity shall require monitoring if construction activity exceeds the depth of the low-sensitivity surficial Qualified Paleontologist in
coordination with the
Construction Contractor
Prior to and During GroundDisturbing ActivitiesCity of Corona Community Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
sediments. The underlying sediments may have high sensitivity; therefore, work in those units shall require paleontological monitoring, as designated by the Qualified Paleontologist in the Paleontological Resources Monitoring and Mitigation Plan (PRMMP).

GEO-4 Low Sensitivity. Projects involving ground disturbance in previously undisturbed areas mapped as having “low”
paleontological sensitivity shall incorporate worker training to make construction workers aware that, although paleontological sensitivity is low, fossils might still be encountered. The Qualified Paleontologist shall oversee this training as well as remain on call in the event fossils are found.

Qualified Paleontologist in
coordination with the
Construction Contractor
Prior to and During GroundDisturbing ActivitiesCity of Corona Community Development Department
GEO-5 Unknown Sensitivity. Projects involving ground disturbance in previously undisturbed areas mapped as having “unknown” paleontological sensitivity shall retain a Qualified Paleontologist to conduct a field survey of the project area to determine the sensitivity of the geologic units, after which the relevant mitigation measures (GEO-1 through GEO-4) shall be applied.

Qualified Paleontologist in
coordination with the
Project Applicant and the
City of Corona Planning
Division
Prior to Project Approval City of Corona Community
Development Department
GEO-6 All Projects. In the event of any fossil discovery, regardless of depth or geologic formation, construction work shall halt within a 50-foot radius of the find until its significance can be determined by a Qualified Paleontologist. Significant fossils shall be recovered, prepared to the point of curation, identified by qualified experts, listed in a database to facilitate analysis, and deposited in a designated paleontological curation facility in accordance with the standards of the Society of Vertebrate Paleontology (2010). The most likely repository is the Natural History Museum of Los Angeles County (NHMLA). The
repository shall be identified, and a curatorial arrangement shall be signed, prior to collection of the fossils.

Qualified Paleontologist in
coordination with the
Construction Contractor
During Ground Disturbing
Activities
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)

GREENHOUSE GAS EMISSIONS
GHG-1 The City of Corona shall update the Climate Action Plan (CAP) every five years to ensure the City is monitoring the plan’s progress toward achieving the City’s greenhouse gas (GHG) reduction target and to require amendment if the plan is not achieving specified level. The update shall consider a
trajectory consistent with the GHG emissions reduction goal established under Executive Order S-03-05 for year 2050 and the latest applicable statewide legislative GHG emission reduction that may be in effect at the time of the CAP update (e.g., Senate Bill 32 for year 2030). The CAP update shall include the following:
• GHG inventories of existing and forecast year GHG levels. • Tools and strategies for reducing GHG emissions to ensure a trajectory with the long-term GHG reduction goal of
Executive Order S-03-05.
• Plan implementation guidance that includes, at minimum, the following components consistent with the proposed
CAP:
­ Administration and Staffing
­ Finance and Budgeting
­ Timelines for Measure Implementation
­ Community Outreach and Education
­ Monitoring, Reporting, and Adaptive Management
­ Tracking Tools
City of Corona Planning
Division
Every Five Years City of Corona Community
Development Department

MINERAL RESOURCES
MIN-1 Prior to project approval for proposed development of properties classified as either regionally significant
construction aggregate MRZ-2 or industrial minerals MRZ-2a, a mineral resource evaluation shall be conducted to
determine the significance and economic viability of mining the resource. If development of a property would preclude Project Applicant in
coordination with the City
of Corona Planning
Division
Prior to Project Approval City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
future extraction of a significant mineral resource, in accordance with CEQA, the City shall make the appropriate findings and adopt a Statement of Overriding Considerations prior to permitting development of the property.

MIN-2 Prior to approval of any project on lands classified as either regionally significant construction aggregate MRZ-2 or
industrial mineral MRZ-2a, a report shall be prepared that analyzes the project’s value in relation to the mineral values found onsite. The analysis shall consider the importance of construction aggregate mineral resource onsite to the market region as a whole, and not just the importance of the
resources found within the City and SOI. The report shall be submitted to the City, such that the City has adequate
information to develop a statement of reasons for permitting the proposed land use to the California Department of
Conservation, State Mining and Geology Board, for
subsequent review, in accordance with SMARA, Article 2, Section 2762 and 2763 for areas designated of regional
significance
Project Applicant in
coordination with the City
of Corona Planning
Division and the State
Mining and Geology Board
Prior to Project Approval City of Corona Community
Development Department
NOISE
N-1 Construction contractors shall implement the following measures for construction activities conducted in the City.

Construction plans submitted to the City shall identify these measures on demolition, grading, and construction plans submitted to the City. The City Corona Public Works
Department shall verify that grading, demolition, and/or construction plans submitted to the City include these
notations prior to issuance of demolition, grading and/or building permits.
• During the active construction period, equipment and
trucks used for project construction shall utilize the best available noise control techniques (e.g., improved
mufflers, intake silencers, ducts, engine enclosures, and Project Applicant in
coordination with the
Construction Contractor
and the City of Corona
Public Works Department
Prior to Approval of
Demolition/Grading/Building
Permits and During
Construction Activities
City of Corona Public
Works Department

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
acoustically attenuating shields or shrouds), wherever
feasible.
• Impact tools (e.g., jack hammers and hoe rams) shall be hydraulic- or electric-powered wherever feasible. Where the use of pneumatic tools is unavoidable, an exhaust
muffler on the compressed air exhaust shall be used
along with external noise jackets on the tools.
• Stationary equipment such as generators and air
compressors shall be located as far as feasible from
noise-sensitive uses.
• Stockpiling shall be located as far as feasible from noisesensitive receptors. • Construction traffic shall be limited—to the extent
feasible—to approved haul routes established by the
City.
• Prior to the start of construction activities, a sign shall be posted at the entrance(s) to the job site, clearly visible to the public, that includes permitted construction days and hours, as well as the contact information of the City’s and contractor’s authorized representatives that are assigned to respond in the event of a noise or vibration complaint.

If the authorized contractor’s representative receives a complaint, they shall investigate, take appropriate
corrective action, and report the action to the City.
• Signs shall be posted at the job site entrance(s), within the on-site construction zones, and along queueing lanes (if any) to reinforce the prohibition of unnecessary engine idling. All other equipment shall be turned off if not in use for more than 5 minutes.
• During the entire active construction period and to the extent feasible, the use of noise-producing signals,

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
including horns, whistles, alarms, and bells, shall be for safety warning purposes only. The construction manager
shall be responsible for adjusting alarms based on the
background noise level, or to utilize human spotters
when feasible and in compliance with all safety
requirements and laws.
• When construction noise is predicted to exceed
established noise standards and when the anticipated
construction duration is two years or more, contractors shall erect temporary noise barriers, where feasible.

N-2 Prior to issuance of a building permit for a project requiring pile driving during construction within 135 feet of fragile structures such as historical resources, 100 feet of
nonengineered timber and masonry buildings (e.g., most
residential buildings), or within 75 feet of engineered concrete and masonry (no plaster), or a vibratory roller within 25 feet of any structure, the project applicant shall prepare a noise and vibration analysis to assess and
mitigate potential noise and vibration impacts related to these activities. This noise and vibration analysis shall be conducted by a qualified and experienced acoustical
consultant or engineer. The vibration levels shall not exceed Federal Transit Administration (FTA) architectural damage thresholds (e.g., 0.12 in/sec PPV for fragile or historical resources, 0.2 in/sec PPV for non-engineered timber and masonry buildings, and 0.3 in/sec PPV for engineered
concrete and masonry), or the City threshold of 0.05 in/sec RMS (94 VdB). If vibration levels would exceed this
threshold, alternative uses such static rollers and drilling piles as opposed to pile driving shall be used.

Project Applicant in
coordination with the
Construction Contractor
and the City of Corona
Public Works Department
Prior to Issuance of a
Building Permit
City of Corona Public
Works Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

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Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)

TRANSPORTATION
T-1 The City shall consider the following implementation programs to reduce citywide VMT:
• VMT exchange program. VMT generators can select from a pre-approved list of mitigation projects that may be located within the same jurisdiction or possibly from a larger area. The intent is to match the project’s needed VMT reduction with a specific mitigation project of matching size and to provide evidence that the VMT reduction will reasonably occur.
• VMT Mitigation Bank. A mitigation bank is intended to serve as an entity or organization that pools fees from development projects across multiple jurisdictions to spend on larger scale mitigation projects. This concept differs from the more conventional impact fee program approach described above in that the fees are directed to a few larger projects that have the potential for a more significant reduction in VMT and the program is regional in nature.

City of Corona Public
Works Department
On-going City of Corona Public
Works Department

TRIBAL CULTURAL RESOURCES
TCR-1 Tribal Cultural Resources Monitoring. The project archaeologist, in consultation with interested tribes, the developer and the City of Corona, shall develop an Archaeological Monitoring Plan (AMP) to address the details, timing and responsibility of archaeological and cultural activities that will occur on the project site. Details in the AMP shall include:

1. Project-related ground disturbance (including, but not limited to, brush clearing, grading, trenching, etc.) and development scheduling;

2. The development of a rotating or simultaneous schedule in coordination with the developer and the project archeologist for designated Native American Tribal Monitors from the consulting tribes during grading, excavation and ground disturbing activities on the site: including the scheduling, safety requirements, duties, scope of work, and Native
• AMP: Qualified
Archaeologist in
coordination with the
Project Applicant and
the City of Corona
Planning Division
• Tribal Monitoring:

Construction Contractor
in coordination with
Native American Tribal
Monitor
• AMP: Prior to Issuance of
a Grading Permit
• Tribal Monitoring: 30-days
Prior to Issuance of a
Grading Permit and During
Ground Disturbing
Activities
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
American Tribal Monitors’ authority to stop and redirect grading activities in coordination with all project
archaeologists (if the tribes cannot come to an agreement on the rotating or simultaneous schedule of tribal monitoring, the Native American Heritage Commission shall designate the schedule for the onsite Native American Tribal Monitor for the proposed project);

3. The protocols and stipulations that the developer, City, Tribes and project archaeologist will follow in the event of inadvertent cultural resources discoveries, including any newly
discovered cultural resource deposits that shall be subject to a cultural resources evaluation.

At least 30-days prior to application for a grading permit and before any brush clearance, grading, excavation and/or ground disturbing activities on the site take place, the future developer shall retain a tribal cultural monitor to monitor all grounddisturbing activities in an effort to identify any unknown archaeological resources.

Pursuant to the AMP, a tribal monitor from the consulting tribe (e.g., Pechanga Band of Luiseño Indians, Soboba Band of Luiseño Indians, or Gabrieleño Band of Mission Indians – Kizh Nation) shall be present during the initial grading activities. If tribal resources are found during grubbing activities, the tribal monitoring shall be present during site grading activities.

TCR-2 Treatment and Disposition of Cultural Resources. In the event that Native American cultural resources are inadvertently discovered during the course of any ground disturbing activities, including but not limited to brush clearance, grading, trenching, etc. grading for the proposed project, the following procedures will be carried out for treatment and disposition of the discoveries:

Qualified Archaeologist in
coordination with the
Project Applicant and the
applicable Native American
Tribe
During Ground Disturbing
Activities
City of Corona Community
Development Department

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements
March 2020 Page 29
Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)

1. Temporary Curation and Storage: During the course of construction, all discovered resources shall be temporarily curated in a secure location onsite or at the offices of the project archaeologist. The removal of any artifacts from the project site will need to be thoroughly inventoried with tribal monitor oversite of the process; and

2. Treatment and Final Disposition: The landowner(s) shall relinquish ownership of all cultural resources, including sacred items, burial goods, and all archaeological artifacts and nonhuman remains as part of the required mitigation for impacts to cultural resources. The applicant shall relinquish the artifacts through one or more of the following methods and provide the City of Corona with evidence of same:
a. Accommodate the process for onsite reburial of the
discovered items with the consulting Native American
tribes or bands. This shall include measures and
provisions to protect the future reburial area from any future impacts. Reburial shall not occur until all
cataloguing, basic analysis, and other analyses as
recommended by the project archaeologist and approved
by consulting tribes and basic recordation have been
completed; all documentation should be at a level of
standard professional practice to allow the writing of a report of professional quality;
b. A curation agreement with an appropriate qualified
repository within San Bernardino County that meets
federal standards per 36 CFR Part 79 and therefore
would be professionally curated and made available to
other archaeologists/researchers for further study. The collections and associated records shall be transferred, including title, to an appropriate curation facility within San Bernardino County, to be accompanied by payment
of the fees necessary for permanent curation;
c. For purposes of conflict resolution, if more than one Native American tribe or band is involved with the project

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

2. Mitigation Monitoring Requirements

Table 1 Mitigation Monitoring Requirements
Mitigation Measure
Responsibility for
Implementation Timing
Responsibility for
Monitoring
Monitor
(Signature Required)
(Date of Compliance)
and cannot come to an agreement as to the disposition of cultural materials, they shall be curated at the San
Bernardino County Museum by default;
d. At the completion of grading, excavation and ground
disturbing activities on the site, a Phase IV Monitoring Report shall be submitted to the City documenting
monitoring activities conducted by the project
archaeologist and Native Tribal Monitors within 60 days of completion of grading. This report shall document the
impacts to the known resources on the property; describe how each mitigation measure was fulfilled; document the type of cultural resources recovered and the disposition of such resources; provide evidence of the required cultural sensitivity training for the construction staff held during the required pre-grade meeting; and, in a confidential
appendix, include the daily/weekly monitoring notes from the archaeologist. All reports produced will be submitted to the City, County Museum, and consulting tribes.

TCR-3 During construction activities, the project applicant shall allow additional archaeological monitors of Native American tribes to access the project site on a volunteer basis to monitor grading and excavation activities.

Qualified Archaeologist in
coordination with the
Project Applicant and
Native American Tribal
Monitor
During Construction Activities City of Corona Community Development Department
March 2020 Page 31

3. Report Preparation

3.1 LIST OF PREPARERS
City of Corona
Joanne Coletta, Community Development Director
PlaceWorks
Nicole Vermilion, Principal
Jasmine A. Osman, Project Planner

CORONA GENERAL PLAN TECHNICAL UPDATE MITIGATION MONITORING AND REPORTING PROGRAM

CITY OF CORONA

3. Report Preparation

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ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

PROJECT

CITY OF CORONA
Appendix
August 2024 Page 23
Appendix B. Biological Technical Report and
MSHCP Consistency Analysis
Biological Technical Report and MSHCP
Consistency Analysis
for the
Ontario Avenue Widening at Lincoln Avenue
Project
Riverside County, California
Assessor’s Parcel Numbers: 109-382-023 through -033, 109-390-005, 109- 391-001 through -008, 109-413-001, 109-422-010 through -014, 109-423- 007 through -010, 110-513-001 through -006, 110-513-021, -022, 110-521- 016 through -025, 112-242-032, 113-020-009, -015, -016, -018, 113-131- 001, 113-140-001, -005, -006, -008, -010, -015, -016, -017, -018, -020, -021, -025, -026, 113-290-005 through -009, -013, -014, 113-420-003, -010, -011, 113-432-001, 113-491-006 through -016
Prepared For:

PlaceWorks, Inc.
3 MacArthur Place, Suite 1100
Santa Ana, California 92707
Prepared By:
2861 Pullman Street
Santa Ana, California 92705
July 2024
Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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CONTENTS

1.0 INTRODUCTION ...................................................................................................................................................................1

1.1 Project Location...................................................................................................................................................1

1.2 Background and Project Description ..........................................................................................................4

2.0 SPECIAL-STATUS SPECIES REGULATIONS ..................................................................................................................5

2.1 Federal Regulations............................................................................................................................................5

2.1.1 The Federal Endangered Species Act.........................................................................................5

2.1.2 Bald and Golden Eagle Protection Act.......................................................................................6

2.1.3 Migratory Bird Treaty Act................................................................................................................6

2.1.4 Federal Clean Water Act ..................................................................................................................6

2.2 State and Local Regulations............................................................................................................................7

2.2.1 California Endangered Species Act..............................................................................................7

2.2.2 Fully Protected Species ....................................................................................................................7

2.2.3 Native Plant Protection Act............................................................................................................8

2.2.4 Porter-Cologne Water Quality Control Act..............................................................................8

2.2.5 California Fish and Game Code ....................................................................................................8

2.2.6 Western Riverside County Multiple Species Habitat Conservation Plan................... 10

2.2.7 California Environmental Quality Act Significance Criteria............................................ 10

3.0 METHODS ............................................................................................................................................................................ 11

3.1 Literature Review.............................................................................................................................................. 11

3.2 U.S. Fish and Wildlife Service Designated Critical Habitat............................................................... 13

3.3 Western Riverside County Multiple Species Habitat Conservation Plan Consistency Analysis ................................................................................................................................................................ 13

3.4 Field Survey ........................................................................................................................................................ 13

3.4.1 Biological Reconnaissance Survey ............................................................................................ 13

3.5 Preliminary Aquatic Resources Delineation........................................................................................... 14

4.0 RESULTS ................................................................................................................................................................................ 14

4.1 Literature Review.............................................................................................................................................. 14

4.1.1 Special-Status Plants and Wildlife............................................................................................. 14

4.2 U.S. Fish and Wildlife Service Designated Critical Habitat............................................................... 15

4.3 Biological Reconnaissance Survey............................................................................................................. 15

4.3.1 Property Characteristics ................................................................................................................ 15

4.3.2 Vegetation Communities and Land Cover Types................................................................ 16

4.3.3 Disturbed ............................................................................................................................................ 19

4.3.4 Urban/Developed............................................................................................................................ 19 Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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4.3.5 Plants Observed ............................................................................................................................... 19

4.3.6 Wildlife Observed ............................................................................................................................ 19

4.3.7 Potential for Special-Status Species to Occur on the Project Site ............................... 20

4.3.8 Potential for Special-Status Wildlife to Occur on the Project Site ............................... 24

4.4 Bats, Raptors, and Migratory Birds ............................................................................................................ 29

4.5 Aquatic Resources ............................................................................................................................................ 29

4.6 Wildlife Movement Corridors, Linkages, and Significant Ecological Areas ............................... 32

5.0 IMPACT ANALYSIS ............................................................................................................................................................ 32

5.1 Special-Status Species .................................................................................................................................... 32

5.2 Sensitive Natural Communities .................................................................................................................. 34

5.3 State or Federally Protected Wetlands and Waters of the U.S. ...................................................... 34

5.4 Wildlife Corridors and Nursery Sites ........................................................................................................ 35

5.5 Habitat Conservation Plans and Natural Community Conservation Plans ................................ 35

5.5.1 Riparian/Riverine Areas, Vernal Pools, and Fairy Shrimp Species (MSHCP Section

6.1.2) ..................................................................................................................................................... 35

5.5.2 Narrow Endemic Plant Species (MSHCP Section 6.1.3) .................................................... 36

5.5.3 Urban/Wildlands Interface Guidelines (MSHCP Section 6.1.4) ...................................... 37

5.5.4 Burrowing Owl Habitat Assessment (MSHCP Section 6.3.2) .......................................... 37

5.5.5 Additional Surveys (MSHCP Section 6.3.2) ............................................................................ 37

6.0 MITIGATION MEASURES ................................................................................................................................................ 37

6.1 Additional Recommendations..................................................................................................................... 41

7.0 CERTIFICATION .................................................................................................................................................................. 42

8.0 REFERENCES ........................................................................................................................................................................ 43

LIST OF FIGURES
Figure 1. Project Vicinity .................................................................................................................................................................... 2 Figure 2. Project Location.................................................................................................................................................................. 3 Figure 3. Natural Resources Conservation Service Soil Types ......................................................................................... 17 Figure 4. Vegetation Communities and Land Cover Types ............................................................................................... 18 Figure 5. Potentially Jurisdictional Aquatic Resources ........................................................................................................ 31

LIST OF TABLES
Table 1. Weather Conditions During the Survey ................................................................................................................... 15 Table 2. California Rare Plant Rank Status Designations .................................................................................................... 20 Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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LIST OF APPENDICES
Appendix A – Potential for Occurrence of Sensitive Plant Species Appendix B – Potential for Occurrence of Sensitive Wildlife Species Appendix C – Representative Site Photographs
Appendix D – Plant Species Observed
Appendix E – Wildlife Species Observed

LIST OF ACRONYMS AND ABBREVIATIONS
Term Description
ARD Aquatic Resources Delineation
BMP Best Management Practice
Caltrans California Department of Transportation
CBB Crotch bumble bee
CCR California Code of Regulations
CDFW California Department of Fish and Wildlife
CEQA California Environmental Quality Act
CFR Code of Federal Regulations
CNDDB California Natural Diversity Database
CNPS California Native Plant Society
CNPSEI California Native Plant Society Electronic Inventory CRPR California Rare Plant Rank
CWA Clean Water Act
DBESP Determination of Biologically Equivalent or Superior Preservation ESA Endangered Species Act
FHWA Federal Highway Administration
GPS Global Positioning System
HCP Habitat Conservation Plan
IA Implementing Agreement
m meters
MBTA Migratory Bird Treaty Act
MCV Manual of California Vegetation
MM Mitigation Measure
MSHCP Multiple Species Habitat Conservation Plan
MSL Mean Sea Level
NEPA National Environmental Policy Act
NEPSSA Narrow Endemic Plant Species Survey Area
NPPA Native Plant Protection Act
NRCS National Resources Conservation Service
NWI National Wetlands Inventory
NWPR Navigable Waters Protection Rule
Procedures State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State
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Term Description
Project Ontario Avenue Widening at Lincoln Avenue Project PVC Polyvinyl chloride
RCA Regional Conservation Authority
RCHCA Riverside County Habitat Conservation Agency
RCTLMA Riverside County Transportation and Land Management Agency ROW Right of way
RWQCB Regional Water Quality Control Board
SAA Streambed Alteration Agreement
SKR Stephens’ kangaroo rat
SSC Species of Special Concern
TNW Traditionally Navigable Waters
USACE U.S. Army Corps of Engineers
USC U.S. Code
USEPA U.S. Environmental Protection Agency
USFWS U.S. Fish and Wildlife Service
USGS U.S. Geological Survey
WRCBMP Western Riverside County Biological Monitoring Program Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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1.0 INTRODUCTION
On behalf of the City of Corona, PlaceWorks, Inc. retained ECORP Consulting, Inc. to provide California Environmental Quality Act (CEQA) services for the proposed Ontario Avenue Widening at Lincoln Avenue Project (Project) located in the City of Corona in Riverside County, California. ECORP biologists conducted a reconnaissance-level biological survey of the Project Site to document the existing biological resources, to assess the habitat for its potential to support sensitive plant and wildlife species, and to determine whether Project-related impacts would occur to sensitive biological resources, as required under CEQA.

ECORP conducted the biological surveys in accordance with the Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP). The MSHCP provides information on plant and wildlife species of concern to the County of Riverside and outlines goals for their conservation. Information on the MSHCP can be found at www.rctlma.org (Riverside County Transportation and Land Management Agency [RCTLMA] 2024). The purpose of this study is to comply with the requirements of the MSHCP and identify any biological resources that may require mitigation prior to impacts from development. The Project will be subject to county, state, and federal regulations regarding compliance with the federal Endangered Species Act (ESA), California ESA, Migratory Bird Treaty Act (MBTA), and California Fish and Game Code.

1.1 Project Location
The Project Site consists of an approximately 20.13-acre area comprised of Assessor’s Parcel Numbers:
109-382-023 through -033, 109-390-005, 109-391-001 through -008, 109-413-001, 109-422-010 through -014, 109-423-007 through -010, 110-513-001 through -006, 110-513-021, -022, 110-521-016 through - 025, 112-242-032, 113-020-009, -015, -016, -018, 113-131-001, 113-140-001, -005, -006, -008, -010, -015, -016, -017, -018, -020, -021, -025, -026, 113-290-005 through -009, -013, -014, 113-420-003, -010, -011, 113-432-001, and 113-491-006 through -016. The Project Site is located in the City of Corona, south of State Route 91, in Riverside County (Figures 1 and 2). The Project Site is located east of Via Pacifica, west of Taylor Avenue, and north of Highgrove Street. The Project is located within the Unincorporated La Sierra (Yorba) Land Grant and is depicted on the U. S. Geological Survey (USGS) Corona South 7.5-minute topographic map quadrangle. Elevation at the Project Site ranges from 871 to 900 feet (approximately 265 to 274 meters) above Mean Sea Level (MSL; Google Earth 2024). The Project Site shown in Figure 2 is slightly larger than needed to encompass all potential activities and needs for the Project.

Long Beach
Los Angeles
138
2 18
Angeles
National Forest
Victorville
2 15
605
Pala
Reservation
Camp
Pendleton
Marine Corps
Base
Chino Hills
State Park
San Bernardino
National Forest
Murrieta
Rancho Santa
Margarita
Redlands
Yucaipa
Laguna Niguel
Highland
San Clemente
Perris
Riverside
Oceanside
Ontario Pomona
Rancho
Cucamonga
Corona
Huntington Beach
El Monte
Santa Ana
Anaheim
San Francisco
Los Angeles
California
Nevada Utah
Arizona
Oregon Idaho
Map Date: 1/2/2024
Sources: ESRI
Location: N:\2023\2023-213 Ontario Avenue Widening at Lincoln Ave\MAPS\Location_Vicinity\Ontario Ave LnV.aprx - Ontario Vicinity (mwilliams - 1/2/2024) Project Location
I
0 5 10
Mile s
2023-213 Ontario Avenue Widening at Lincoln Ave
Figure 1. Project Vicinity
Map Date: 1/18/2024
Sources: ESRI, USGS
Location: N:\2023\2023-213 Ontario Avenue Widening at Lincoln Ave\MAPS\Location_Vicinity\Ontario Ave LnV.aprx - Ontario LnV (trotellini - 2/1/2024) Corona South, CA [1994 (p.r. 1997), NAD
27]
CA 7.5-minute Topographic Quadrangle
US Geological Survey.

Riverside County, California
Unincorporated La Sierra (Yorba) Land Grant
Latitude (NAD83): 33.85771836°
Longitude (NAD83): -117.58489922°
Watershed: Santa Ana (18070203)
I
0 1,000 2,000
Scale in Feet
2023-213 Ontario Avenue Widening at Lincoln Ave
Figure 2. Project Location
Project Site - 20.13 acres
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1.2 Background and Project Description
Ontario Avenue is an East/West major arterial roadway spanning nearly the limits of the City of Corona. In the section of roadway between Buena Vista Avenue and the Interstate 15, Ontario Avenue has been widened to the ultimate plan of six lanes, with three lanes of vehicular travel in each direction with raised median islands. However, between Lincoln Avenue and Buena Vista Avenue, Ontario Avenue is a Major Arterial 4 Lane Roadway for which the south side of Ontario Avenue between Lincoln Avenue and Conejo Street has not been improved. This section of Ontario Avenue lacks the consistency of the civil improvements constructed in the adjacent roadway sections. In addition, Lincoln Avenue between Ontario Avenue and Othello Lane contains neither sidewalks nor streetlights on the East side of the street, which are present in all adjacent sections of Lincoln Avenue. Furthermore, the current South Corona Community Facilities Plan designates raised landscaped median islands on Ontario Avenue between Lincoln Avenue and South Vicentia Avenue and a signalized intersection at Othello Lane and Lincoln Avenue, and is also designated in the City’s Traffic Signal Master Plan.

With this Project, the City aims to accomplish the following tasks:

1. Widen the roadway on Ontario Avenue to the ultimate right of way (ROW) between Lincoln Avenue and Conejo Street providing three lanes of vehicular travel and bike lanes in each direction maintaining a continuous and homogeneous corridor on Ontario Avenue east of Oak Avenue. Ontario Avenue shall be maintained with three lanes of vehicular travel and a bike lane in each direction between Oak Avenue and Taylor Avenue.

2. Construct raised landscaped median islands along Ontario Avenue between Oak Avenue and South Vicentia Avenue per the South Corona Community Facilities Plan.

3. Complete all missing civil improvements on the south side of Ontario Avenue between Lincoln Avenue and Conejo Street including curb and gutter, parkways, sidewalks, driveway approaches, driveways, streetlights, catch basins, and utility relocations.

4. Complete all missing civil improvements on the east side of Lincoln Avenue between Ontario Avenue and Othello Lane including curb and gutter, parkways, sidewalks, driveway approaches, streetlights, and utility relocations.

5. Modify the existing traffic signals at the intersections of Ontario Avenue/Lincoln Avenue and Ontario Avenue/Oak Avenue to align with the ultimate street improvements and lane configurations.

6. Construct signalized intersection at the intersection of Lincoln Avenue/Othello Lane and provide fiberoptic communications to the existing Traffic Management System hub cabinet at Lincoln/Ontario.

7. Construct American with Disabilities Act compliant curb ramps at intersections within the Project limits.

8. Extend the existing 8-inch polyvinyl chloride (PVC) reclaimed water main line on Ontario Avenue from the Ontario Avenue/Lincoln Avenue intersection to the Ontario Avenue/South Vicentia Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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Avenue intersection to feed the irrigation system for the proposed and existing median islands.

Convert the existing City of Corona owned landscape meter at 882 Ontario Avenue at the Southeast Corner of Ontario/South Buena Vista Avenue from potable water to reclaimed water.

9. Provide an analysis and cost to benefit ratio to extend the existing 8-inch reclaimed water main past the proposed end point at the intersection of Ontario Avenue/South Vicentia Avenue to the intersection of Ontario Avenue/Main Street and convert the existing City of Corona owned landscape meters from potable water to reclaimed water.

10. Construct sewer laterals for the directly affected properties between Lincoln Avenue and Conejo Street from the existing 10-inch vitrified clay pipe sewer main on Ontario Avenue to the ROW limit on the south side of Ontario Avenue.

11. Resurface Ontario Avenue and restripe lane configurations to be homogenous with the improved sections of Ontario within the Project limits and any adjacent areas required. The limits anticipated are on Ontario Avenue from Via Pacifica to Taylor Avenue and on Lincoln Avenue from Othello Lane to Ontario Avenue.

2.0 SPECIAL-STATUS SPECIES REGULATIONS
ECORP biologists conducted the biological reconnaissance survey to identify potential constraints to Project development and ensure compliance with state and federal regulations regarding listed, protected, and sensitive species. The regulations are detailed in this section.

2.1 Federal Regulations

2.1.1 The Federal Endangered Species Act
The federal ESA protects plants and animals that are listed as endangered or threatened by the U.S. Fish and Wildlife Service (USFWS) and the National Marine Fisheries Service. Section 9 of the ESA prohibits the taking of endangered wildlife, where taking is defined as “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, collect, or attempt to engage in such conduct” (50 Code of Federal Regulations [CFR] 17.3).

For plants, this statute governs removing, possessing, maliciously damaging, or destroying any endangered plant on federal land and removing, cutting, digging up, damaging, or destroying any endangered plant on non-federal land in knowing violation of state law (16 U.S. Code [USC] 1538). Under Section 7 of the ESA, federal agencies are required to consult with the USFWS if their actions, including permit approvals or funding, could adversely affect a listed (or proposed) species (including plants) or its critical habitat. Through consultation and the issuance of a biological opinion, the USFWS may issue an incidental take statement allowing take of the species that is incidental to an otherwise authorized activity provided the activity will not jeopardize the continued existence of the species. Section 10 of the ESA provides for issuance of incidental take permits where no other federal actions are necessary provided a Habitat Conservation Plan (HCP) is developed.

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2.1.2 Bald and Golden Eagle Protection Act
The Bald and Golden Eagle Protection Act was enacted in 1940 and prohibits anyone, without a permit, from taking bald or golden eagles including their parts, nests, or eggs. Take is defined as pursue, shoot, shoot at, poison, wound, kill, capture, trap, collect, molest, or disturb. In addition to these protections, the Bald and Golden Eagle Protection Act provides protection for nesting sites. Nesting sites are protected not only when active but also when previously used. These nests are protected in the case that an eagle may return to the same nesting site.

2.1.3 Migratory Bird Treaty Act
The federal MBTA implements international treaties between the U.S. and other nations devised to protect migratory birds, any of their parts, eggs, and nests from activities such as hunting, pursuing, capturing, killing, selling, and shipping, unless expressly authorized in the regulations or by permit. As authorized by the MBTA, the USFWS issues permits to qualified applicants for the following types of activities: falconry, raptor propagation, scientific collecting, special purposes (rehabilitation, education, migratory game bird propagation, and salvage), take of depredating birds, taxidermy, and waterfowl sale and disposal. The regulations governing migratory bird permits can be found in 50 CFR Part 13, General Permit Procedures and 50 CFR Part 21, Migratory Bird Permits. The State of California has incorporated the protection of birds of prey in Sections 3800, 3513, and 3503.5 of the California Fish and Game Code.

2.1.4 Federal Clean Water Act
The U.S. Army Corps of Engineers (USACE) regulates the discharge of dredged or fill material into Waters of the U.S. under Section 404 of the CWA. Discharges of fill material is defined as the addition of fill material into Waters of the U.S., including, but not limited to the following:
 Placement of fill necessary for the construction of any structure, or impoundment requiring rock, sand, dirt, or other material for its construction;  site development fills for recreational, industrial, commercial, residential, and other uses;  causeways or road fills; and
 fill for intake and outfall pipes, and subaqueous utility lines [33 Code of Federal Regulations Section 328.2(f)].

In addition, Section 401 of the Clean Water Act (CWA; 33 USC 1341) requires any applicant for a federal license or permit to conduct any activity that may result in a discharge of a pollutant into Waters of the U.S. to obtain a certification that the discharge will comply with the applicable effluent limitations and water quality standards.

Substantial impacts to wetland and non-wetland Waters of the U.S. (over 0.5 acre of impact) may require an individual permit. Projects that only minimally affect Waters of the U.S. (less than 0.5 acre of impact) may meet the conditions of one of the existing Nationwide Permits. A Water Quality Certification or waiver pursuant to Section 401 of the CWA is required for Section 404 permit actions. In California, this Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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certification or waiver is typically issued by the Regional Water Quality Control Board (RWQCB). However, in the case of tribal lands that are held in trust, this certification or waiver is issued by the USACE.

2.2 State and Local Regulations

2.2.1 California Endangered Species Act
The California ESA generally parallels the main provisions of the ESA but, unlike its federal counterpart, the California ESA applies the take prohibitions to species proposed for listing (called candidates by the state). Section 2080 of the California Fish and Game Code prohibits the taking, possession, purchase, sale, and import or export of endangered, threatened, or candidate species, unless otherwise authorized by permit or in the regulations. Take is defined in Section 86 of the California Fish and Game Code as “hunt, pursue, catch, capture, or kill, or attempt to hunt, pursue, catch, capture, or kill.” The California ESA allows for take incidental to otherwise lawful development projects. State lead agencies are required to consult with California Department of Fish and Wildlife (CDFW) to ensure that any action they undertake is not likely to jeopardize the continued existence of any endangered or threatened species or result in destruction or adverse modification of essential habitat.

2.2.2 Fully Protected Species
The State of California first began to designate species as fully protected prior to the creation of the federal and California ESAs. Lists of fully protected species were initially developed to provide protection to those animals that were rare or faced possible extinction, and included fish, amphibians and reptiles, birds, and mammals. Most fully protected species have since been listed as threatened or endangered under federal and/or California ESAs. Previously, the regulations that implement the Fully Protected Species Statute (California Fish and Game Code § 4700) provide that fully protected species may not be taken or possessed at any time. However, as of July 10, 2023, Senate Bill 147 (SB147) was signed into law, authorizing CDFW to issue take permits under the California ESA for fully protected species for qualifying projects through 2033. As stated in section 2081.15 of SB147, qualifying projects include:
 A maintenance, repair, or improvement project to the State Water Project, including existing infrastructure, undertaken by the Department of Water Resources.  A maintenance, repair, or improvement project to critical regional or local water agency infrastructure.
 A transportation project, including any associated habitat connectivity and wildlife crossing project, undertaken by a state, regional, or local agency that does not increase highway or street capacity for automobile or truck travel.
 A wind project and any appurtenant infrastructure improvement, and any associated electric transmission project carrying electric power from a facility that is located in the state to a point of junction with any California based balancing authority.

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 A solar photovoltaic project and any appurtenant infrastructure improvement, and any associated electric transmission project carrying electric power from a facility that is located in the state to a point of junction with any California-based balancing authority.

Under the bill American peregrine falcon (Falco peregrinus anatum), brown pelican (Pelecanus occidentalis), and thicktail chub (Gila crassicauda) are no longer considered fully protected species.

2.2.3 Native Plant Protection Act
The Native Plant Protection Act (NPPA) of 1977 (California Fish and Game Code Sections 1900-1913) was created with the intent to “preserve, protect and enhance rare and endangered plants in this State.” The NPPA is administered by CDFW. The California Fish and Wildlife Commission has the authority to designate native plants as endangered or rare and to protect endangered and rare plants from take. The California ESA of 1984 (California Fish and Game Code Section 2050-2116) provided further protection for rare and endangered plant species, but the NPPA remains part of the California Fish and Game Code.

2.2.4 Porter-Cologne Water Quality Control Act
The Porter-Cologne Water Quality Control Act requires “any person discharging waste, or proposing to discharge waste, within any region that could affect the Waters of the State to file a report of discharge” with the RWQCB through State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State (Procedures) (California Code of Regulations [CCR], title 23, Section 3855) (State Water Resources Control Board 2021). Waters of the State is defined as any surface water or groundwater, including saline waters, within the boundaries of the State (California Water Code Section 13050[e]). Pollution is defined as an alteration of the quality of the Waters of the State by waste to a degree that unreasonably affects its beneficial uses (California Water Code Section 13050) and includes filling in Waters of the State. Note that CCR, title 23, Section 3855 applies only to individual water quality certifications, but the new Procedures extend the application of Section 3855 to individual waste discharge requirements for discharges of dredged or fill material to Waters of the State and waivers thereof.

A permit for impacts to Waters of the State would likely be required under the CWA and/or PorterCologne Water Quality Control Act. To determine whether a project should be regulated pursuant to the Porter-Cologne Water Quality Control Act, the RWQCB considers whether project activities could affect the quality of Waters of the State.

2.2.5 California Fish and Game Code

2.2.5.1 Streambed Alteration Agreement
Pursuant to Section 1602 of the California Fish and Game Code, a Streambed Alteration Agreement (SAA) application must be submitted for “any activity that may substantially divert or obstruct the natural flow or substantially change the bed, channel, or bank of any river, stream, or lake” (CDFW 2023a). In Title 14 of the CCR, Section 1.72, the CDFW defines a stream (including creeks and rivers) as “a body of water that flows at least periodically or intermittently through a bed or channel having banks and supports fish or Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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other aquatic life. This includes watercourses having a surface or subsurface flow that supports or has supported riparian vegetation.” In Chapter 9, Section 2785 of the California Fish and Game Code, riparian habitat is defined as “lands which contain habitat which grows close to, and which depends upon soil moisture from a nearby freshwater source.”
The CDFW’s jurisdiction includes drainages with a definable bed, bank, or channel and areas associated with a drainage channel that support intermittent, perennial, or subsurface flows; supports fish or other aquatic life; or supports riparian or hydrophytic vegetation. It also includes areas that have a hydrologic source.

The CDFW will determine if the proposed actions will result in diversion, obstruction, or change of the natural flow, bed, channel, or bank of any river, stream, or lake that supports fish or wildlife. If warranted, the CDFW will issue an SAA that includes measures to protect affected fish and wildlife resources; this SAA is the final proposal agreed upon by the CDFW and the applicant.

2.2.5.2 Migratory Birds
The CDFW enforces the protection of nongame native birds in Sections 3503, 3503.5, and 3800 of the California Fish and Game Code. Section 3513 of the California Fish and Game Code prohibits the possession or take of birds listed under the MBTA. These sections mandate the protection of California nongame native birds’ nests and also make it unlawful to take these birds. All raptor species are protected from take pursuant to California Fish and Game Code Section 3503.5 and are also protected at the federal level by the MBTA of 1918 (USFWS 1918).

2.2.5.3 Bats and Roosting Bats
Bats in California are currently protected by the California Fish and Game Code, Sections 86, 1600, 2000, 2014, 3007, and 4150; California Public Resources Code, Division 14, Section 21000 et seq.; CCR, Title 14 including, but not limited to Section 251.1, CEQA regulations (Section 15000 et seq.), Section 15380 – Endangered, Rare, or Threatened Species, Section 15382 – Significant Effect on the Environment, and Appendix O; and California Department of Transportation (Caltrans) Environmental Policy, Caltrans Environmental Procedures, Federal Highway Administration (FHWA) Environmental Policy, and FHWA Environmental Procedures.

Regulations of particular relevance to this Project include Title 14, Section 251.1 of the CCR, which prohibits harassment (defined in that section as an intentional act that disrupts an animal’s normal behavior patterns, including breeding, feeding, or sheltering) of nongame mammals (e.g., bats), and California Fish and Game Code Section 4150, which prohibits take or possession of all nongame mammals or parts thereof. Any activities resulting in bat mortality (e.g., the destruction of an occupied bat roost that results in the death of bats), disturbance that causes the loss of a maternity colony of bats (resulting in the death of young), or various modes of nonlethal pursuit or capture may be considered take as defined in Section 86 of the California Fish and Game Code. In addition, impacts to bat maternity colonies, which are considered native wildlife nursery sites, could be considered significant under CEQA.

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2.2.6 Western Riverside County Multiple Species Habitat Conservation Plan The Western Riverside County MSHCP is a comprehensive, multi-jurisdictional HCP focusing on conservation of species and their associated habitats in western Riverside County. The MSHCP identifies 146 species, referred to as Covered Species, for which the federal and California ESAs take authorization has been granted to signatories to the plan as long as they comply with its requirements. Of the 146 Covered Species within the MSHCP, 118 are considered to be adequately conserved. The remaining 28 Covered Species will be considered to be adequately conserved when certain landmark conservation requirements are met during the course of future development. The goal of the MSHCP is to maintain the biological and ecological diversity within a rapidly urbanizing region while also improving the future economic development in the county by providing an efficient, streamlined regulatory process through which development can proceed in an efficient way.

The approval of the MSHCP and execution of the Implementing Agreement (IA) by the wildlife agencies allows signatories of the IA to issue take authorizations for all species covered by the MSHCP, including state- and federally listed species, as well as other identified sensitive species and/or their habitats. Each city of local jurisdiction will impose a Development Mitigation Fee for projects within their jurisdiction.

With payment of the mitigation fee to the county and compliance with the survey requirements of the MSHCP where required, full mitigation in compliance with CEQA, National Environmental Policy Act (NEPA), the California ESA, and the federal ESA will be granted. The Development Mitigation Fee varies according to project size and project description and is dependent on development density (Riverside County Ordinance No. 810.2). Payment of the mitigation fee and compliance with the requirements of Section 6.0 of the MSHCP are intended to provide full mitigation under CEQA, NEPA, and the California and federal ESAs for impacts to the species and habitats covered by the MSHCP, pursuant to agreements with USFWS, CDFW, and/or any other appropriate participating regulatory agencies as set forth in the IA for the MSHCP.

2.2.7 California Environmental Quality Act Significance Criteria Section 15064.7 of the CEQA Guidelines encourages local agencies to develop and publish the thresholds that the agency uses in determining the significance of environmental effects caused by projects under its review. However, agencies may also rely upon the guidance provided by the expanded Initial Study checklist contained in Appendix G of the CEQA Guidelines. Appendix G provides examples of impacts that would normally be considered significant. Based on these examples, impacts to biological resources would normally be considered significant if a project would:
 have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by CDFW or USFWS;
 have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by CDFW or USFWS; Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 have a substantial adverse effect on state- or federally protected wetlands (including, but not limited to, marsh, vernal pool, and coastal) through direct removal, filling, hydrological interruption, or other means;
 interfere substantially with the movement of any native resident or migratory fish or wildlife species, or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites;
 conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance; and
 conflict with the provisions of an adopted HCP, Natural Community Conservation Plan, or other approved local, regional, or state HCP.

An evaluation of whether an impact on biological resources would be substantial must consider both the resource itself and how that resource fits into a regional or local context. Substantial impacts would be those that would diminish, or result in the loss of, an important biological resource, or those that would obviously conflict with local, state, or federal resource conservation plans, goals, or regulations. Impacts are sometimes locally important but not significant according to CEQA. The reason for this is that although the impacts would result in an adverse alteration of existing conditions, they would not substantially diminish, or result in the permanent loss of an important resource on a population-wide or region-wide basis.

3.0 METHODS

3.1 Literature Review
ECORP biologists performed a literature review using the CDFW’s California Natural Diversity Database (CNDDB; CDFW 2023b), the California Native Plant Society’s (CNPS) Electronic Inventory (CNPSEI; CNPS 2023a), the USFWS Carlsbad Office Species Occurrence Data (USFWS 2023a), and the MSHCP biological monitoring program data (CDFW 2023c) prior to conducting the biological reconnaissance survey to determine the special-status plant and wildlife species that have been documented in the vicinity of the Project Site. ECORP searched CNDDB and CNPSEI records within the Project Site boundaries as depicted on USGS 7.5-minute Corona South topographic quadrangle, plus the following surrounding eight topographic quadrangles: Prado Dam, Corona North, Riverside West, Black Star Canyon, Lake Mathews, El Toro, Santiago Peak, and Alberhill. The CNDDB and CNPSEI contain records of reported occurrences of federally or state-listed endangered, threatened, proposed endangered or threatened species, CDFW Species of Special Concern (SSC), and/or other special-status species or habitat that may occur within or in the vicinity of the Project. Additional information was gathered from the following sources and includes, but is not limited to the following:
 State and Federally Listed Endangered and Threatened Animals of California (CDFW 2023d);  Special Animals List (CDFW 2023e);
 The Jepson Manual: Vascular Plants of California (Baldwin et al. 2012); Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 A Manual of California Vegetation, 2nd Edition (MCV, Sawyer et al. 2009);  A Manual of California Vegetation, Online Edition (CNPS 2023b); and  various online websites (e.g., CalFlora 2023; eBird 2024; NatureServe 2023).

ECORP generated a list of special-status plant and animal species that have potential to occur within the Project Site using this information and observations in the field. For the purposes of this assessment, special-status species are defined as plants or animals that:
 have been designated as either rare, threatened, or endangered by CDFW, CNPS, or the USFWS, and/or are protected under either the federal or California ESAs;  are candidate species being considered or proposed for listing under these same acts;  are fully protected by the California Fish and Game Code, Sections 3511, 4700, 5050, or 5515;  are of expressed concern to resource and regulatory agencies or local jurisdictions; and/or  are covered species under the MSHCP but are not considered adequately conserved.

Special-status species reported for the region in the literature review or for which suitable habitat occurs on the site were assessed for their potential to occur within the Project Site based on the following guidelines:
 Present: The species was observed on the site during a site visit or focused survey.  High: Habitat (including soils and elevation factors) for the species occurs within the Project Site and a known occurrence has recently been recorded (within the last 20 years) within 5 miles of the area.
 Moderate: Habitat (including soils and elevation factors) for the species occurs within the Project Site and a documented observation occurs within the database search, but not within 5 miles of the area; a historic documented observation (more than 20 years old) was recorded within 5 miles of the Project Site; or a recently documented observation occurs within 5 miles of the area and marginal or limited amounts of habitat occurs in the Project Site.  Low: Limited or marginal habitat for the species occurs within the Project Site and a recently documented observation occurs within the database search, but not within 5 miles of the area; a historic documented observation (more than 20 years old) was recorded within 5 miles of the Project Site; or suitable habitat strongly associated with the species occurs on site, but no records or only historic records were found within the database search.  Presumed Absent: Species was not observed during a site visit or focused surveys conducted in accordance with protocol guidelines at an appropriate time for identification; habitat (including soils and elevation factors) does not exist on site; or the known geographic range of the species does not include the Project Site.

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Note that location information on some special-status species may be of questionable accuracy or unavailable. Therefore, for survey purposes, the environmental factors associated with a species’ occurrence requirements may be considered sufficient reason to give a species a positive potential for occurrence. In addition, just because a record of a species does not exist in the databases does not mean it does not occur. In many cases, records may not be present in the databases because an area has not been surveyed for that species.

3.2 U.S. Fish and Wildlife Service Designated Critical Habitat Biologists reviewed the USFWS online service for information regarding Threatened and Endangered Species Final Critical Habitat designation within California to determine if the Project is within any species’ designated Critical Habitat (USFWS 2023b).

3.3 Western Riverside County Multiple Species Habitat Conservation Plan Consistency Analysis
ECORP reviewed data regarding the Project Site to determine consistency with the MSHCP. Biologists also queried the Western Riverside County Regional Conservation Authority (RCA) MSHCP Information Map to determine requirements for habitat assessment(s), potential focused survey(s), or other issues related to biological resources that could exist on the Project Site (RCA 2024).

Section 6.0 of the MSHCP requires that an assessment of the Project Site be completed to identify any potential Project-related effects on biological resources, including burrowing owl (Athene cunicularia), riparian/riverine areas, vernal pools, and fairy shrimp (Branchinecta spp.), if applicable. In addition, the MSHCP requires that an Urban/Wildlands Interface analysis be conducted to address the indirect effects associated with locating proposed development in the proximity of MSHCP Conservation Areas.

3.4 Field Survey

3.4.1 Biological Reconnaissance Survey
ECORP biologists conducted the biological reconnaissance survey by walking the entire Project Site and surrounding areas within a 500-foot buffer, where accessible, to identify the vegetation communities and wildlife habitats on the Project Site. The biologists documented the plant and wildlife species present on the Project Site and assessed the condition of the Project Site for the potential to provide habitat for special-status plant and wildlife species. They recorded data on a Global Positioning System (GPS) unit, field notebooks, and/or maps and took photographs during the survey to provide visual representation of the various vegetation communities and site conditions within the Project Site. The Project Site was also examined to assess its potential to facilitate wildlife movement or function as a movement corridor for wildlife moving throughout the region.

ECORP conducted vegetation mapping of the communities and habitats present within the Project Site and the 500-foot buffer to confirm the presence and quality of habitat found onsite. Biologists used the A Manual of California Vegetation, Online Edition (CNPS 2023b) to classify vegetation communities. Any deviations from standard vegetation classifications were made on best professional judgment when areas Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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did not fit into a specific habitat description provided by the MCV. Biologists mapped vegetation communities using field observations and aerial imagery.

Plant and wildlife species, including any special-status species that were observed during the survey, were recorded. Plant nomenclature follows that of The Jepson Manual: Vascular Plants of California (Baldwin et al. 2012). Wildlife nomenclature follows Society for the Study of Amphibians and Reptiles (2017), Checklist of North American Birds (Chesser et al. 2023), and the Revised Checklist of North American Mammals North of Mexico (Bradley et al. 2014).

In instances where a special-status species was observed, ECORP recorded the date, species, location and habitat, and GPS coordinates. The locations of special-status species observations were recorded using a handheld GPS in North American Datum 1983, Universal Transverse Mercator coordinates, Zone 11S.

3.5 Preliminary Aquatic Resources Delineation
A formal Aquatic Resources Delineation (ARD) was not conducted as a part of the biological reconnaissance survey; however, ECORP conducted a desktop review to identify potential streams and hydric soils in the Project Site and 500-foot buffer. This entailed examination of the National Resources Conservation Service (NRCS) Soil Mapper (2023), National Wetlands Inventory (NWI) mapping (USFWS 2023c), USGS The National Map and National Hydrography Dataset (USGS 2023), aerial photography, and the USGS topographic mapping of the Project Site to aid in identifying potential biological constraints to the Project due to jurisdictional streams or features. The desktop review identifies aquatic features within the Project alignment that could be considered aquatic resources jurisdictional to the State of California or USACE. If any aquatic resources were identified in or around the Project Site during the desktop review, they were observed and documented during the field survey.

4.0 RESULTS
The results of the literature review and field surveys, including site characteristics, vegetation communities, plants, wildlife, special-status species, and special-status habitats (including any potential wildlife corridors) are summarized in this section.

4.1 Literature Review

4.1.1 Special-Status Plants and Wildlife
ECORP conducted the CNDDB and CNPSEI searches on December 1 and 5, 2023. The database searches identified 70 special-status plant species and 65 special-status wildlife species that could occur on and/or near the Project Site. A list was generated from the results of the literature review, and the Project Site was evaluated for suitable habitat that could support any of the special-status plant or wildlife species on the list. Appendix A contains a list of the special-status plant species with potential to occur on and/or near the Project Site, and Appendix B contains a list of the special-status wildlife species with potential to occur on and/or near the Project Site.

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4.2 U.S. Fish and Wildlife Service Designated Critical Habitat The Project Site and adjacent 500-foot buffer is not located within any USFWS-designated Critical Habitat.

The nearest designated Critical Habitat is located in the foothills at the base of the Santa Ana Mountains, approximately 1 mile southwest of the Project Site and is associated with coastal California gnatcatcher (Polioptila californica californica; USFWS 2023b). The next two closest Critical Habitat areas are both located along the Santa Ana River and are designated for least Bell’s vireo (Vireo bellii pusillus), approximately 2.4 miles northwest of the Project Site, and for Santa Ana sucker (Catostomus santaanae), approximately 3.2 miles northwest of the Project Site (USFWS 2023b).

4.3 Biological Reconnaissance Survey
The biological reconnaissance survey was conducted on December 6, 2023 by ECORP biologists Alexandra Dorough, Daniel Jaques, and Taylor Dee. Summarized below are the results of the biological reconnaissance survey, including site characteristics, plants and vegetation communities, wildlife, specialstatus species, and special-status habitats (including any potential wildlife corridors). Weather conditions during the survey are summarized in Table 1.

Table 1. Weather Conditions During the Survey
Date
Time Temperature (˚F) Cloud Cover (%) Wind Speed
(mph)
Start End Start End Start End Start End
12/6/2023 0645 0930 53 64 5 5 0-1 0-1
Note: °F = Degrees Fahrenheit; mph = miles per hour

4.3.1 Property Characteristics
The Project Site occurs primarily within the existing paved public ROW. An undeveloped lot is located in the southern portion of the Project Site, and portions of several residential lots occur toward the center of the Project Site. The 500-foot buffer primarily contains residential development with a community park in the western portion and multiple churches and a power substation in the southern portion, south of Ontario Avenue. A drainage channel is present in the eastern part of the Project Site adjacent to Oak Avenue. The drainage channel enters the Project Site from the south and runs underneath Ontario Avenue via a box culvert, leaving the Project Site to the north. Disturbances observed on the Project Site include development with nonnative and ornamental vegetation associated with landscaping, West Ontario Avenue which is a busy highly trafficked road, and ground and vegetation disturbance (i.e., tilling, tree trimming, and landscaping).

According to NRCS Web Soil data, five soil types are documented within the Project Site and 500-foot buffer (NRCS 2023; Figure 3): Arbuckle gravelly loam, 2 to 9 percent slopes, dry, MLRA 19 (AlC); Arbuckle gravelly clay loam, 2 to 8 percent slopes (AmC); Cortina gravelly coarse sandy loam, 2 to 8 percent slopes (CnC); Garretson gravelly very fine sandy loam, 2 to 8 percent slopes (GdC); and Perkins gravelly loam, 2 to Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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10 percent slopes, low precipitation, MLRA 19 (PgB). None of these soil types are hydric or contain hydric components (NRCS 2023). The Project Site shown in Figure 3 is slightly larger than needed to encompass all potential activities and needs for the Project.

4.3.2 Vegetation Communities and Land Cover Types
ECORP mapped and classified vegetation communities and land cover types within the Project Site and the 500-foot buffer using the MCV (CNPS 2023b). No vegetation communities were identified within the Project Site and 500-foot buffer. However, two land cover types are present within the Project Site:
disturbed and urban/developed. The Project’s 500-foot buffer consists of urban/developed land cover.

Each of these land cover types are described below and depicted on Figure 4. The Project Site shown in Figure 4 is slightly larger than needed to encompass all potential activities and needs for the Project.

Border Ave
M
angular Av
e
C e
ntennial Way
Newton Dr
Mangular Park
Kroonen Dr
Via Pacific
a
Fir St
Tulip St
Via Santiago
Turquoise
Dr
Nic
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Dr
Citron St
Hibis
cus St
Eureka St
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W Citron St
Fairm
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Cannes Dr
Via
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Hearthside Dr
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Millbrook Rd
Waterfall Ln
Stephanie Dr
Bridgeport Rd
Pajero Dr
Old Hickory Rd
Alee Cir
Brockton Dr
Lavendar Way
Eure
ka St
Ontario Park
Benjamin
Franklin
Elementary
School
S
Lincoln Ave
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Florence St
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Cruz
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Stillwater Rd
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Lorna St
W Crestview St
Burr St
W Hacienda Dr
Alta Vista Ave
W Rancho Rd
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Letha Raney
Intermediate
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Bismark St
Othello Ln
Montoya Dr
W Monterey Rd
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Esther Dr
Capistrano St
Cortez Dr
Cordoza St
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Horatio Ave
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Park
Vicentia
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School
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Vista
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Taylor Av
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Briarhaven
L
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Cadiz St
Citrus Way
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witchb
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Harbor St
Derby St
Foothill
Elementary
School
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W Citron St
W Crestview St
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v
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a
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Pueblo Rd
W Monterey Rd
W Mission Rd
Montoya Dr
W Ontario Ave
Town & Country
Shopping
Center
Citrus Way
F
aith
St
G D C
P G B
G D C
G D C
A L C
A M C
C N C
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Location: N:\2023\2023-213 Ontario Avenue Widening at Lincoln Ave\MAPS\Soils_and_Geology\Ontario Ave Soils.aprx - Soils Tabloid Landscape (2021) (trotellini - 2/1/2024) 0 700
Scale in Feet
Map Date: 1/3/2024
Sources: Maxar (2022), ESRI
Natural Resources Conservation Service (NRCS)
Soil Survey Geographic (SSURGO) Database for
Riverside County, CA
2023-213 Ontario Road Widening at Lincoln Avenue
Figure 3. Natural Resources Conservation
Service Soil Types
Map Features
Project Site
Project Buffer - 500 ft
Soils Designation - Soils Description
AlC - Arbuckle gravelly loam, 2 to 9 percent
slopes, dry, MLRA 19
AmC - Arbuckle gravelly clay loam, 2 to 8
percent slopes
CnC - Cortina gravelly coarse sandy loam, 2 to 8
percent slopes
GdC - Garretson gravelly very fine sandy loam, 2
to 8 percent slopes
PgB - Perkins gravelly loam, 2 to 10 percent
slopes, low precipitation, MLRA 19
Newton Dr
Mangular Park
Kroonen Dr
Fir St
Nic
e
Dr
Hibis
cus
St
E
ure
k
a
St
M
a
n
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Cannes Dr
Via
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M
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H
erita
g
e
Dr
Hearthside Dr
Orc
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L
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O
a
k
Av
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Hibis
c
u
s
St
Millbrook Rd
Waterfall L
n
Stephanie Dr
Bridgeport Rd
Pajero Dr
Old Hickory Rd
Alee Cir
Brockton Dr
Lavendar Way
Eure
ka
St
W Ontario Ave
Ontario Park
Benjamin
Franklin
Elementary
School
Shady Mill Rd
Stillwater Rd
S
Vic
entia
Av
e
W Citron St
W Hacienda Dr
Alta Vista Ave
Lincoln Park
Letha Raney
Intermediate
Westpark Ln
S
Lin
c
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Av
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Alsace Dr
C
ota
Av
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Bismark St
Othello Ln
Montoya Dr
W Monterey Rd
S
Vic
e
ntia
Av
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C
o
n
ejo
St
Esther Dr
Capistrano St
Cortez Dr
Cordoz a St
Macbeth A
ve
Horatio Ave
D
a
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Dr
Galisteo St
S
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n
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St
Gro
ve A
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Solano St
S
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S
Lin
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W Ontario Ave
Buena Vista
Park
Vicentia
Elementary
School
Cadiz St
Gro
v
e
Av
e
Chicago St
Harbor St
Foothill
Elementary
School
W Citron St
T
a
ylor Av
e
W Hacienda Dr
Pueblo Rd
W Monterey Rd
W Mission Rd
Montoya Dr
W Ontario Ave
2023-213 Ontario Avenue Widening at Lincoln Avenue
Map Date: 1/19/2024
Sources: Maxar (2022), ESRI Figure 4. Vegetation Communities and Land Cover Types
Location: N:\2023\2023-213 Ontario Avenue Widening at Lincoln Ave\MAPS\Vegetation_and_LandCover\Ontario Ave Veg.aprx - Tabloid Landscape Full Data Frame (2021) - TITLE RIGHT (mwilliams - 1/19/2024) I
0 500
Scale in Feet
Map Contents
Project Site
Project Buffer - 500 ft
Vegetation Communities and Land
Cover Types
Urban/Developed
Disturbed
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4.3.3 Disturbed
Disturbed land includes areas that are mostly devoid of vegetation and have been heavily influenced by human actions such as grading, trash dumping, equipment staging, and off-highway vehicle use, but lack development. Disturbed land is not a vegetation classification, but rather a land cover type and is not restricted by elevation. Disturbed areas may be actively maintained to be free of vegetation or have been compacted or disced to such a degree that native and nonnative vegetation is very sparse. The areas mapped as disturbed are largely devoid of vegetation but contain sparse nonnative weedy and ruderal vegetation. This land cover type occurs within the Project Site in a single lot east of Lincoln Avenue. Plants present in this land cover type within the Project Site include nonnative weedy species such as ripgut brome (Bromus diandrus), field bindweed (Convolvulus arvensis), cheeseweed mallow (Malva parviflora), silverleaf nightshade (Solanum elaeagnifolium), and California fan palm (Washingtonia robusta).

4.3.4 Urban/Developed
Developed lands are those that are heavily affected by human use including landscaping, residential homes, commercial or industrial buildings and associated infrastructure, and transportation corridors.

Urban/developed areas do not constitute a vegetation classification, but rather a land cover type. Areas mapped as urban/developed have been constructed upon or otherwise physically altered to an extent that natural vegetation communities are no longer supported. On the Project Site and within the 500-foot buffer, portions of the developed areas contain strips of ornamental and landscaped vegetation; however, this land cover type also consists of paved roadways, residential development, and parking lots. The majority of the Project Site and 500-foot buffer is mapped as urban/developed. Ornamental landscaped plants observed during the biological survey include lawn grass (Festuca sp.), English ivy (Hedera helix), Indian hawthorn (Rhaphiolepis indica), yellow trumpet bush (Tecoma stans), and various ornamental trees.

4.3.5 Plants Observed
Plant species observed during the survey were generally characteristic of disturbed urban areas. Native plants observed include white alder (Alnus rhombifolia), toyon (Heteromeles arbutifolia), Fremont’s cottonwood (Populus fremontii), and coast live oak (Quercus agrifolia). Nonnative plant species observed include wild oat (Avena sp.), orchid tree (Bauhinia purpurea), carrotwood (Cupaniopsis anacardioides), sweetgum (Liquidambar styraciflua), queen palm (Syagrus romanzoffiana), and other various nonnative ornamental plant species. A full list of plant species observed on the Project Site and in the 500-foot buffer is included in Appendix D.

4.3.6 Wildlife Observed
Wildlife species observed and detected on the Project Site or within the 500-foot buffer during the biological reconnaissance survey were generally characteristic of urban environments. Fifteen bird species were observed including Anna’s hummingbird (Calypte anna), American crow (Corvus brachyrhynchos), house finch (Haemorhous mexicanus), and black phoebe (Sayornis nigricans). One mammal species was observed during the survey: pocket gopher (Thomomys sp.). A complete list of wildlife species observed during the survey is included as Appendix E.

Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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4.3.7 Potential for Special-Status Species to Occur on the Project Site The literature review and database searches identified 70 special-status plant species and 65 specialstatus wildlife species that occur on or near the Project Site. However, due to the urban setting and the high level of disturbance at the Project Site, many of the species are presumed absent.

4.3.7.1 Special-Status Plants
There were 70 special-status plant species that appeared in the literature review and database searches for the Project Site (CDFW 2023b; CNPS 2023a). Of those, 17 are federally and/or state-listed and 55 are covered by the MSHCP. Biologists generated a list from the results of the literature review, and the Project was evaluated for suitable habitat that could support any of the special-status plant species on the list. Of the 70 special-status plants identified in the literature review, all 70 species are presumed absent from the Project Site. A table outlining each species, their designations, and the potential for these species to occur on the Project Site can be found in Appendix A.

The results of the literature review were limited to plant species occurring within a nine-quadrangle search of the Project Site. For the purposes of this study, plant species with a CNPS Rare Plant Rank of 1A were eliminated from the analysis because they are presumed to be extirpated from California. Additionally, plant species with a CNPS Rare Plant Rank of 3 or 4 were eliminated from the analysis because these rankings are considered a review list and a watch list, respectively, and if present these Rank 3 and 4 species are not expected to occur in high density. One exception to this is for Rank 3 and 4 species that are covered by the Western Riverside MSHCP and are not considered to be adequately conserved. Plant species that met this criteria were included within the generated list for review. Additionally, plant species were included if they do not have a federal or state listing and do not have a CNPS rank but are covered by the Western Riverside MSHCP and are not considered to be adequately conserved. Descriptions of the CNPS designations can be found in Table 2.

Table 2. California Rare Plant Rank Status Designations List Designation Meaning
1A Plants Presumed Extirpated in California and Either Rare or Extinct Elsewhere 1B Plants Rare, Threatened, or Endangered in California and Elsewhere 2A Plants Presumed Extirpated in California, But Common Elsewhere 2B Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere 3 Plants about which we need more information; a review list 4 Plants of limited distribution; a watch list
List 1B, 2, and 4 extension meanings:
.1 Seriously threatened in California (over 80% of occurrences threatened/high degree and immediacy of threat)
Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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Table 2. California Rare Plant Rank Status Designations List Designation Meaning
.2 Moderately threatened in California (20-80% occurrences threatened/moderate degree and immediacy of threat)
.3 Not very threatened in California (less than 20 percent of occurrences threatened/low degree and immediacy of threat or no current threats known) Note: According to CNPS (Skinner and Pavlik 1994), plants on Lists 1B and 2 meet definitions for listing as threatened or endangered under Section 1901, Chapter 10 of the California Fish and Game Code (California Department of Fish and Game 1984). This interpretation is inconsistent with other definitions.

CRPR = California Rare Plant Rank

4.3.7.2 Plant Species Presumed Absent
A total of 70 plant species were presumed absent due to lack of suitable habitat (including elevation and soils) on the Project Site or because the Project is located outside of the known range for the species.  Chaparral sand-verbena (Abronia villosa var. aurita), California Rare Plant Rank (CRPR) 1B.1;  Yucaipa onion (Allium marvinii), CRPR 1B.2, MSHCP Covered;  Munz’s onion (Allium munzii), federally listed (endangered), state listed (threatened), CRPR 1B.1, MSHCP Covered;
 San Diego ambrosia (Ambrosia pumila), federally listed (endangered), CRPR 1B.1, MSHCP Covered;
 Rainbow manzanita (Arctostaphylos rainbowensis), CRPR 1B.1, MSHCP Covered;  Braunton’s milk-vetch (Astragalus brauntonii), federally listed (endangered), CRPR 1B.1, MSHCP Covered;
 Jaeger’s milk-vetch (Astragalus pachypus var. jaegeri), CRPR 1B.1, MSHCP Covered;  San Jacinto Valley crownscale (Atriplex coronata var. notatior), federally listed (endangered), CRPR 1B.1, MSHCP Covered;
 Coulter’s saltbush (Atriplex coulteri), CRPR 1B.2, MSHCP Covered;  Parish’s brittlescale (Atriplex parishii), CRPR 1B.1, MSHCP Covered;  Davidson's saltscale (Atriplex serenana var. davidsonii), CRPR 1B.2, MSHCP Covered;  Malibu baccharis (Baccharis malibuensis), CRPR 1B.1, MSHCP Covered;  Nevin’s barberry (Berberis nevinii), federally listed (endangered), state listed (endangered), CRPR 1B.1, MSHCP Covered;
 Johnston’s rockcress (Boechera johnstonii), CRPR 1B.2, MSHCP Covered; Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 Thread-leaved brodiaea (Brodiaea filifolia), federally listed (threatened), state listed (endangered), CRPR 1B.1, MSHCP Covered;
 Orcutt’s brodiaea (Brodiaea orcutti), CRPR 1B.1, MSHCP Covered;  Round-leaved filaree (California macrophylla), MSHCP Covered;  San Jacinto mariposa lily (Calochortus palmeri var. munzii), CRPR 1B.2, MSHCP Covered;  Plummer’s mariposa lily (Calochortus plummerae), CRPR 4.2, MSHCP Covered;  Intermediate mariposa lily (Calochortus weedii var. intermedius), CRPR 1B.2, MSHCP Covered;  Vail Lake ceanothus (Ceanothus ophiochilus), federally listed (threatened), state listed (endangered), CRPR 1B.1, MSHCP Covered;
 Smooth tarplant (Centromadia pungens ssp. laevis), CRPR 1B.1, MSHCP Covered;  Peninsular spineflower (Chorizanthe leptotheca), CRPR 4.2, MSHCP Covered;  San Fernando Valley spineflower (Chorizanthe parryi var. fernandina), state listed (endangered), CRPR 1B.1;
 Parry’s spineflower (Chorizanthe parryi var. parryi), CRPR 1B.1, MSHCP Covered;  Long-spined spineflower (Chorizanthe polygonoides var. longispina), CRPR 1B.2, MSHCP Covered;
 San Miguel savory (Clinopodium chandleri), CRPR 1B.2, MSHCP Covered;  Summer holly (Comarostaphylis diversifolia ssp. diversifolia), CRPR 1B.2;  Mojave tarplant (Deinandra mohavensis), state listed (endangered), CRPR 1B.3, MSHCP Covered;
 Cleveland’s bush monkeyflower (Diplacus clevelandii), CRPR 4.2, MSHCP Covered;  Slender-horned spineflower (Dodecahema leptoceras), federally listed (endangered), state listed (endangered), CRPR 1B.1, MSHCP Covered;
 Santa Monica dudleya (Dudleya cymosa ssp. ovatifolia), federally listed (threatened), CRPR 1B.1;
 Many-stemmed dudleya (Dudleya multicaulis), CRPR 1B.2, MSHCP Covered;  Sticky dudleya (Dudleya viscida), CRPR 1B.2, MSHCP Covered;  Santa Ana River woollystar (Eriastrum densifolium ssp. sanctorum), federally listed (endangered), state listed (endangered), CRPR 1B.1, MSHCP Covered;  San Diego button-celery (Eryngium aristulatum var. parishii), federally listed (endangered), state listed (endangered), CRPR 1B.1, MSHCP Covered;
Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 San Jacinto Mountains bedstraw (Galium angustifolium ssp. jacinticum), CRPR 1B.3, MSHCP Covered;
 Alvin Meadow bedstraw (Galium californicum ssp. primum), CRPR 1B.2, MSHCP Covered;  Tecate cypress (Hesperocyparis forbesii), CRPR 1B.1;
 Gowen cypress (Hesperocyparis goveniana), federally listed (threatened), CRPR 1B.2;  Shaggy-haired alumroot (Heuchera hirsutissima), CRPR 1B.3, MSHCP Covered;  Graceful tarplant (Holocarpha virgata ssp. elongata), CRPR 4.2, MSHCP Covered;  Mesa horkelia (Horkelia cuneata var. puberula), CRPR 1B.1;  Beautiful hulsea (Hulsea vestita ssp. callicarpha), CRPR 4.2, MSHCP Covered;  Coulter’s goldfields (Lasthenia glabrata ssp. coulteri), CRPR 1B.1, MSHCP Covered;  Heart-leaved pitcher sage (Lepechinia cardiophylla), CRPR 1B.2, MSHCP Covered;  Ocellated Humboldt lily (Lilium humboldtii ssp. ocellatum), CRPR 4.2, MSHCP Covered;  Lemon lily (Lilium parryi), CRPR 1B.2, MSHCP Covered;  Parish’s meadowfoam (Limnanthes alba ssp. parishii), state listed (endangered), CRPR 1B.2, MSHCP Covered;
 Small-flowered microseris (Microseris douglasii ssp. playtcarpha), CRPR 4.2, MSHCP Covered;  Hall’s monardella (Monardella macrantha ssp. hallii), CRPR 1B.3, MSHCP Covered;  California muhly (Muhlenbergia californica), CRPR 4.3, MSHCP Covered;  Mud nama (Nama stenocarpa), CRPR 2B.2, MSHCP Covered;  Spreading navarretia (Navarretia fossalis), federally listed (threatened), CRPR 1B.1, MSHCP Covered;
 Prostrate navarretia (Navarretia prostrata), CRPR 1B.2, MSHCP Covered;  Chaparral nolina (Nolina cismontana), CRPR 1B.2;
 California Orcutt grass (Orcuttia californica), federally listed (endangered), state listed (endangered), CRPR 1B.1, MSHCP Covered;
 California beardtongue (Penstemon californicus), CRPR 1B.2, MSHCP Covered;  Allen’s pentachaeta (Pentachaeta aurea ssp. allenii), CRPR 1B.1;  Brand’s star phacelia (Phacelia stellaris), CRPR 1B.1, MSHCP Covered;  Fish’s milkwort (Polygala cornuta var. fishiae), CRPR 4.3, MSHCP Covered; Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 Cliff cinquefoil (Potentilla rimicola), CRPR 2B.3, MSHCP Covered;  White rabbit-tobacco (Pseudognaphalium leucocephalum), CRPR 2B.2, MSHCP Covered;  Coulter’s matilija poppy (Romneya coulteri), CRPR 4.2, MSHCP Covered;  Chaparral ragwort (Senecio aphanactis), CRPR 2B.2;
 Hammitt’s clay-cress (Sibaropsis hammittii), CRPR 1B.2, MSHCP Covered;  Salt spring checkerbloom (Sidalcea neomexicana), CRPR 2B.2;  San Bernardino aster (Symphyotrichum defoliatum), CRPR 1B.2;  California screw moss (Tortula californica), CRPR 1B.2; and  Wright’s trichocoronis (Trichocoronis wrightii var. wrightii), CRPR 2B.1, MSHCP Covered.

4.3.8 Potential for Special-Status Wildlife to Occur on the Project Site There were 65 special-status wildlife species that appeared in the literature review and database searches for the Project Site. Of those, 22 are federally and/or state listed, two are fully protected outside the ESA, one is a candidate for federal listing, two are proposed for federal listing, two are candidates for state listing, and 47 are covered by the MSHCP. Of the 65 special-status wildlife species identified in the literature review, one has a moderate potential to occur, five have a low potential to occur, and the remaining 59 species are presumed absent from the Project Site. The urban, developed nature of the Project Site, the lack of native vegetation, the presence of anthropogenic influences on the Project Site, and the lack of suitable habitat likely reduce the potential for occurrence of many of these species. A complete list of the 59 special-status wildlife species, with details regarding habitat requirements and potential for occurrence designations, is included as Appendix B.

4.3.8.1 Wildlife Species with a Moderate Potential to Occur The following species were found to have a moderate potential to occur on the Project Site, as indicated by one or more of the following:
 habitat for the species occurs onsite and a known occurrence has been reported in the database, but not within 5 miles of the site;
 habitat for the species occurs onsite and a historic documented observation (i.e., more than 20 years old) was recorded within 5 miles of the Project Site; or  a recently documented observation occurs within 5 miles of the site and marginal or limited amounts of habitat occurs onsite.

Lincoln’s Sparrow (Melospiza lincolnii)
Lincoln’s sparrow is an MSHCP-Covered Species. This bird is a winter visitor to the lowland of Southern California and is a rare breeder in higher elevations (4,000 to 9,000 feet above MSL) of the San Gabriel, Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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San Bernardino, and San Jacinto Mountains. Lincoln’s sparrow breeds in lush and brushy montane wet meadows with thickets of small willows (Salix spp.), other riparian shrubs, and tall grasses. Wintering and migratory areas for this species include lowland shrub and scrub habitats including chaparral, coastal sage scrub, grassland, freshwater marsh, peninsular juniper woodland, riparian scrub, oak woodland and forest, and Riversidean alluvial fan sage scrub. The diet of this species consists of a variety of seeds, insects, millipedes, and other small invertebrates. Although there is no suitable nesting habitat present on the Project Site, the Project Site contains marginally suitable wintering and foraging habitat in the disturbed lot present at the corner of South Lincoln Avenue and Othello Lane. There is also marginally suitable wintering and foraging habitat present in the ornamental vegetation within the urban landscaped areas within the Project Site and the 500-foot buffer. Although no CNDDB records were identified during the database search, multiple recent records of the species were identified within 5 miles of the Project Site in eBird and the Western Riverside County Biological Monitoring Program (WRCBMP). The closest WRCBMP record was documented in November 2019 approximately 3 miles northwest of the Project Site (CDFW 2023c). The closest eBird records were multiple occurrences on April 2021 at the Skyline Drive Trailhead approximately 1 mile southeast of the Project Site, and multiple observations from December 2021 and November 2020 at Mountain Gate Park approximately 1 mile south of the Project Site (eBird 2024). This species has a moderate potential to occur as a winter visitor in the Project Site based on the marginally suitable habitat present and recent records within 5 miles.

4.3.8.2 Wildlife Species with a Low Potential to Occur
The following species was found to have a low potential to occur on the Project Site, as indicated by one or more of the following:
 Limited or marginal habitat for the species occurs within the Project Site and a recently documented observation occurs within the database search, but not within 5 miles of the area;
 Limited or marginal habitat for the species occurs within the Project Site and a historic documented observation (more than 20 years old) was recorded within 5 miles of the Project Site; or
 Suitable habitat strongly associated with the species occurs onsite, but no records or only historic records were found within the database search.

Crotch Bumble Bee (Bombus crotchii)
Crotch bumble bee is a Candidate for listing under the California ESA. This species occurs between San Diego and Redding, California, within a variety of habitats including open grasslands, shrublands, chaparral, and within some desert habitats and urban settings (CDFW 2022). Crotch bumble bee is most easily distinguished from other Bombus species by their distinct hair coloration; queen and worker bees have black hair on their faces with yellow on the top of the head, the front part of the thorax is yellow with some black hairs between and below the wings and at the back of the thorax, the first tergal on the abdomen is black, the second tergal is usually yellow, the third tergal is black anteriorly and red posteriorly, and the fourth and fifth tergals are either entirely red or black (The Xerces Society 2018).

Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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Crotch bumble bees require suitable nesting sites, nectar and pollen sources throughout their colony period (i.e., spring, summer, fall), and overwintering sites for queens. Nests are often underground in abandoned holes that were utilized by ground squirrels, mice, rats, and birds. Nectar sources most commonly used by this species include those from the family Fabaceae, Apocynaceae, Asteraceae, Lamiaceae, and Boraginaceae (The Xerces Society 2018). Limited nesting habitat occurs on the Project Site in the disturbed lot, located at the corner of South Lincoln Avenue and Othello Lane, where small mammal burrows are present. The ornamental vegetation present in the urban/developed areas of the Project Site provides foraging habitat for the species. The literature review documented only historic CNDDB records of the species within 5 miles of the Project Site (CDFW 2023b). However, one recent record (Occ #423) was documented approximately 9 miles northwest of the Project Site at Chino Hills State Park in July 2020.

The closest CNDDB record (Occ #197) was recorded in March 1933 in Corona, approximately 0.3 miles north of the Project Site. No Bumble Bee Watch records were identified within 5 miles of the Project Site (The Xerces Society 2023). The closest Bumble Bee Watch records were eight individuals documented on August 2023 at Walnut Reservoir in Anaheim approximately 8.8 miles west of the Project Site. Based on the limited nesting and suitable foraging habitat present within the Project Site, historic records within 5 miles, and recent records greater than 5 miles away, Crotch bumble bee was determined to have a low potential to occur on the Project Site.

Additional wildlife species with a low potential to occur:
 Pallid bat (Antrozous pallidus), CDFW SSC;
 Western mastiff bat (Eumops perotis californicus), CDFW SSC;  Western yellow bat (Lasiurus xanthinus), CDFW SSC; and  Pocketed free-tailed bat (Nyctinomops femorosaccus), CDFW SSC.

4.3.8.3 Wildlife Species Presumed Absent
These species were not present at the site during the site visit and/or habitat was not present or suitable.

For some species, there were historic or recent sightings; however, due to the lack of suitable habitat within the Project Site, these species are presumed absent:
 Vernal pool fairy shrimp (Branchinecta lynchi), federally listed (threatened), MSHCP Covered;  San Diego fairy shrimp (Branchinecta sandiegonensis), federally listed (endangered);  Monarch butterfly (Danaus plexippus pop. 1), Candidate for federal listing;  Quino checkerspot butterfly (Euphydryas editha quino), federally listed (endangered), MSHCP Covered;
 Santa Rosa Plateau fairy shrimp (Linderiella santarosae), MSHCP Covered;  Delhi Sands flower-loving fly (Rhaphiomidas terminatus abdominalis), federally listed (endangered), MSHCP Covered;
Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 Riverside fairy shrimp (Streptocephalus woottoni), federally listed (endangered), MSHCP Covered;
 Santa Ana sucker (Catostomus santaanae), federally listed (threatened), MSHCP Covered;  Arroyo chub (Gila orcutti), CDFW SSC, MSHCP Covered;
 Steelhead – southern California DPS (Oncorhynchus mykiss irideus pop. 10), federally listed (endangered), candidate for state listing;
 Santa Ana speckled dace (Rhinichthys osculus ssp. pop. 8), CDFW SSC;  Arroyo toad (Anaxyrus californicus), federally listed (endangered), CDFW SSC, MSHCP Covered;
 California red-legged frog (Rana draytonii), federally listed (threatened), CDFW SSC, MSHCP Covered;
 Southern mountain yellow-legged frog (Rana muscosa), federally listed (endangered), state listed (endangered), MSHCP Covered;
 Western spadefoot (Spea hammondii), proposed for federal listing, CDFW SSC, MSHCP Covered;
 Coast Range newt (Taricha torosa), CDFW SSC, MSHCP Covered;  San Diegan legless lizard (Anniella stebbinsi), CDFW SSC;  California glossy snake (Arizona elegans occidentalis), CDFW SSC;  Coastal whiptail (Aspidoscelis tigris stejnegeri), CDFW SSC, MSHCP Covered;  Southern rubber boa (Charina umbratica), state listed (threatened), MSHCP Covered;  San Diego banded gecko (Coleonyx variegatus abbotti), CDFW SSC, MSHCP Covered;  Red-diamond rattlesnake (Crotalus ruber), CDFW SSC, MSHCP Covered;  Western pond turtle (Emys marmorata), proposed for federal listing, CDFW SSC, MSHCP Covered;
 California mountain kingsnake (Lampropeltis zonata [parvirubra]), San Bernardino population, MSHCP Covered;
 California mountain kingsnake (Lampropeltis zonata [pulchra]), San Diego population, MSHCP Covered;
 Blainville’s horned lizard (Phrynosoma blainvillii), CDFW SSC, MSHCP Covered;  Coast patch-nosed snake (Salvadora hexalepis virgultea), CDFW SSC;  Southern sagebrush lizard (Sceloporus graciosus vandeburgianus), MSHCP Covered; Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 Two-striped gartersnake (Thamnophis hammondii), CDFW SSC;  Northern goshawk (Accipiter gentilis), CDFW SSC, MSHCP Covered;  Tricolored blackbird (Agelaius tricolor), state listed (threatened), CDFW SSC, MSHCP Covered;  Grasshopper sparrow (Ammodramus savannarum), CDFW SSC, MSHCP Covered;  Long-eared owl (Asio otus), CDFW SSC;
 Burrowing owl (Athene cunicularia), CDFW SSC, MSHCP Covered;  Golden eagle (Aquila chrysaetos), Bald and Golden Eagle Protection Act, CDFW Fully Protected, MSHCP Covered;
 Swainson's hawk (Buteo swainsoni), state listed (threatened), MSHCP Covered;  Mountain plover (Charadrius montanus), CDFW SSC, MSHCP Covered;  Western snowy plover (Charadrius nivosus nivosus), federally listed (threatened), CDFW SSC;  Western yellow-billed cuckoo (Coccyzus americanus occidentalis), federally listed (threatened), state listed (endangered), MSHCP Covered;
 Yellow rail (Coturnicops noveboracensis), CDFW SSC;
 Black swift (Cypseloides niger), CDFW SSC, MSHCP Covered;  White-tailed kite (Elanus leucurus), CDFW Fully Protected, MSHCP Covered;  Southwestern willow flycatcher (Empidonax traillii extimus), federally listed (endangered), state listed (endangered), MSHCP Proposed Species;
 Bald eagle (Haliaeetus leucocephalus), Bald and Golden Eagle Protection Act, federally delisted, state listed (endangered), CDFW Fully Protected, MSHCP Covered;  Yellow-breasted chat (Icteria virens), CDFW SSC, MSHCP Covered;  Loggerhead shrike (Lanius ludovicianus), CDFW SSC, MSHCP Covered;  California black rail (Laterallus jamaicensis coturniculus), state listed (threatened), CDFW Fully Protected;
 Coastal California gnatcatcher (Polioptila californica californica), federally listed (threatened), CDFW SSC, MSHCP Covered;
 Purple martin (Progne subis), CDFW SSC, MSHCP Covered;  Yellow warbler (Setophaga petechia), CDFW SSC, MSHCP Covered;  Williamson’s sapsucker (Sphyrapicus thyroideus), MSHCP Covered;  California spotted owl (Strix occidentalis occidentalis), CDFW SSC, MSHCP Covered; Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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 Least Bell's vireo (Vireo bellii pusillus), federally listed (endangered), state listed (endangered), MSHCP Covered;
 Northwestern San Diego pocket mouse (Chaetodipus fallax fallax), CDFW SSC, MSHCP Covered;
 San Bernardino kangaroo rat (Dipodomys merriami parvus), federally listed (endangered), state listed (endangered), CDFW SSC, MSHCP Covered;
 Stephens’ kangaroo rat (Dipodomys stephensi), federally listed (threatened), state listed (threatened), MSHCP Covered;
 San Bernardino flying squirrel (Glaucomys oregonensis californicus), CDFW SSC, MSHCP Covered;
 Southern grasshopper mouse (Onychomys torridus ramona), CDFW SSC; and  Los Angeles pocket mouse (Perognathus longimembris brevinasus), CDFW SSC, MSHCP Covered.

4.4 Bats, Raptors, and Migratory Birds
Potential nesting habitat for migratory birds and raptors protected by the MBTA and California Fish and Game Code was present on and adjacent to the Project Site in some of the larger trees and shrubs.

Additionally, the open areas and ground could be suitable for some ground-nesting species (e.g., mourning dove [Zenaida macroura]), killdeer [Charadrius vociferus]). Raptors typically breed from January 15 through August 31, and songbirds and other passerines generally nest from February 1 through September 30. There is potential for nesting to occur within the Project Site and in adjacent habitat within the 500-foot buffer due to the presence of suitable nesting habitat in the form of structures (i.e., buildings, utility poles), trees and shrubs throughout the urban/developed areas, and disturbed lot.

Potential roosting habitat for bat species protected under CEQA and the California Fish and Game Code was present on and adjacent to the Project Site. Potentially suitable habitat for roosting was present within and adjacent to the Project Site primarily in the form of untrimmed frond skirts of palm trees located within and adjacent to the Project Site as well as in the form of other large trees such as Fremont’s cottonwood. Additionally, potentially suitable habitat for roosting bats is present on the Project Site in the form of residential buildings and crevices in the box culvert underneath Ontario Avenue.

Bats common to California can roost within human-made structures such as culverts and buildings, as well as in tree foliage and cavities. No bats or bat sign (e.g., staining, guano) were detected during the biological reconnaissance survey. However, the box culvert located underneath Ontario Avenue was inaccessible at the time of the biological survey for the biologists to inspect for bats or bat sign.

4.5 Aquatic Resources
The desktop review of the NRCS identified five soil units, or types, within the Project Site, none of which are considered a hydric soil or have hydric components. The desktop review of the NWI and USGS Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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National Map revealed two potentially jurisdictional aquatic features within the Project Site (USFWS 2023c; USGS 2023). Both of these features are shown on Figure 5. The Project Site shown in Figure 5 is slightly larger than needed to encompass all potential activities and needs for the Project. The first feature appears to cross the Project Site and appears to run parallel to Lincoln Avenue (USGS 2023). This first feature is not visible on aerial imagery, was not visible during the biological survey, and was likely piped underground when initial development of the area occurred. The second feature is the drainage channel located in the eastern part of the Project Site adjacent to Oak Avenue. This drainage channel is a concrete-lined channel that lacks vegetation and runs in a south-to-north fashion and runs underneath Ontario Avenue via a box culvert. The biologists observed a very small amount of water flowing through this channel at the time of the biological survey. Although a desktop review of aquatic resources was performed, no formal delineation of aquatic resources was conducted.

Kroonen Dr
Via
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Fir St
Tulip St
Turquoise D
Nice Dr
Citron St
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Ma
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W Citron St
Cannes Dr
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Hibiscu
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Millbrook Rd
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Stephanie Dr
Bridgeport Rd
Pajero Dr
Old Hickory Rd
Alee Cir
Brockton Dr
Lavendar Way
Eure
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W Ontario Ave
Ontario Park
Benjamin
Franklin
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Douglas Way
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Stillwater Rd
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Lorna St
W Hacienda Dr
Alta Vista Ave
W Rancho Rd
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Lincoln Park
Letha Raney
Intermediate
Westpark Ln
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Othello Ln
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W Monterey Rd
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Esther Dr
Capistrano St
Cortez Dr
Cordoz a St
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Horatio Ave
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Sena St
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W Ontario Ave
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Vicentia
Elementary
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Highgrove St
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Cadiz St
Grove Ave
Chicago St
Harbor St
Derby St
Foothill
Elementary
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Taylor
Ave
W Hacienda Dr
W Monterey Rd
W Mission Rd
Montoya Dr
W Ontario Ave
Citrus Way
0 600
I
Scale in Feet
Location: N:\2023\2023-213 Ontario Avenue Widening at Lincoln Ave\MAPS\Watershed_and_Hydro_Analysis\Ontario Ave Water Jurisdiction.aprx - WaterJurisdiction (trotellini - 2/1/2024) Figure 5. Potentially Jurisdictional Aquatic
Resources
Map Date: 1/2/2024
Sources: ESRI, Maxar (2022), USGS, National Hydrology Dataset 2023-213 Ontario Road Widening at Lincoln Avenue
Map Contents
Project Site
Project Buffer - 500 ft
Potential Jurisdictional Resources
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4.6 Wildlife Movement Corridors, Linkages, and Significant Ecological Areas
The concept of habitat corridors addresses the linkage between large blocks of habitat that allow the safe movement of mammals and other wildlife species between habitat areas. The definition of a corridor varies, but corridors may include such areas as greenbelts, refuge systems, underpasses, and biogeographic land bridges. In general, a corridor is described as a linear habitat, embedded in a dissimilar matrix, which connects two or more large blocks of habitat.

Wildlife movement corridors are critical for the survivorship of ecological systems for several reasons.

Corridors can connect water, food, and cover sources, spatially linking these three resources with wildlife in different areas. In addition, wildlife movement between habitat areas provides for the potential of genetic exchange between wildlife species populations, thereby maintaining genetic variability and adaptability to maximize the success of wildlife responses to changing environmental conditions. This is especially critical for small populations subject to loss of variability from genetic drift and effects of inbreeding. Naturally, the nature of corridor use and wildlife movement patterns varies greatly among species.

ECORP assessed the Project Site for its ability to function as a wildlife corridor. Most of the Project Site occurs within the existing paved public ROW. The Project Site is surrounded by residential development to the north, south, east, and west and is surrounded by highly trafficked roadways that reduce movement of wildlife to the Project Site including Via Pacifica, Ontario Avenue, Lincoln Avenue, South Buena Vista Avenue, and Taylor Avenue. The Project Site is situated approximately 1 mile east of the Santa Ana Mountains and despite the presence of nearby roadways and residential development, the Project Site could play a role in local wildlife dispersal and foraging. Common wildlife species including coyote (Canis latrans), Virginia opossum (Didelphis virginiana), striped skunk (Mephitis mephitis), and common raccoon (Procyon lotor) could travel through the Project Site and neighboring developed areas.

However, the Project Site provides limited connectivity between large areas of open space on a local or regional scale. The Project Site’s value as a corridor is lessened by the presence of residential development on all sides, highly trafficked paved roadways, and anthropogenic factors. Less than significant impacts to wildlife corridors are expected to occur from the Proposed Project.

5.0 IMPACT ANALYSIS

5.1 Special-Status Species
The majority of the Project Site was classified as urban/developed land cover with one smaller area consisting of disturbed land. In addition, the entire 500-foot buffer consists of urban/developed land cover. Disturbances observed on the Project Site and the 500-foot buffer were mainly associated with development and anthropogenic disturbance including nonnative and ornamental vegetation, highly trafficked roadways, landscaping, and tilling of undeveloped land. This impact analysis takes the highly developed nature of the Project Site into account when considering potential impacts that may occur anywhere within the Project Site boundaries to special-status species.

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Of the 70 special-status plant species identified in the literature search, all 70 species were determined to be presumed absent from the Project Site. Furthermore, the Project Site is neither located in a Criteria Area nor a MSHCP-designated Narrow Endemic Plant Species Survey Area. No impacts to special-status plant or Criteria/Narrow Endemic plant species are expected to occur as a result of the Proposed Project.

Of the 65 special-status wildlife species identified in the literature search, one has a moderate potential to occur and five have a low potential to occur. The remaining 59 species are presumed absent from the Project Site.

Lincoln’s sparrow was determined to have a moderate potential for wintering on the Project Site; however, was presumed absent from nesting within the Project Site and 500-foot buffer. Lincoln’s sparrow is a MSHCP Covered species that is not adequately conserved. Direct impacts to migrating and wintering Lincoln’s sparrow may occur in the form of injury or mortality by moving vehicles and equipment. Indirect impacts could occur as a result of Project construction in the form of increased human and vehicular activity, noise, dust, ground vibrations, nighttime lighting, and habitat degradation. However, if this species were to be present within the Project Site; they would likely occur in low numbers due to anthropogenic disturbances and lack of connectivity on the Project and Project-related impacts would not contribute to the overall decline of populations of this species. Therefore, no impacts to Lincoln’s sparrow are anticipated to result from this Project.

Crotch bumble bee was determined to have a low potential to occur on the Project Site. Foraging habitat occurs throughout the majority of the Project Site. Limited nesting habitat is present on the Project Site in the disturbed lot where small mammal burrows are present. Direct impacts to Crotch bumble bee could occur in the form of injury or mortality due to vehicle or equipment strikes or entombment inside of nesting locations (i.e., burrows) that are graded over during construction. Indirect impacts may occur in the form of loss of habitat, increased human activity, noise, dust, and ground vibrations. Due to the status of this species as a Candidate for state listing and the presence of suitable habitat, impacts to Crotch bumble bee would be less than significant with the implementation of Mitigation Measure BIO-1 and BIO5.

Four bat species, all CDFW SSC species, have a low potential to occur on the Project Site: pallid bat, western mastiff bat, western yellow bat, and pocketed free-tailed bat. Suitable roosting habitat in the form of residential buildings and crevices in the box culvert located underneath Ontario Avenue is present for pallid bat. The buildings present on the Project Site and within the 500-foot buffer also offer suitable roosting habitat for western mastiff bat and pocketed free-tailed bat. Large California and Mexican fan palm trees with large unkept frond skirts were present within the Project Site that offer suitable roosting habitat for western yellow bat. Title 14, Section 251.1 of the CCR prohibits harassment (defined in that section as an intentional act that disrupts an animal’s normal behavior patterns, including breeding, feeding, or sheltering) of nongame mammals (i.e., bats), and California Fish and Game Code Section 4150 prohibits take or possession of all nongame mammals or parts thereof. Any activities resulting in bat mortality (i.e., the destruction of an occupied bat roost that results in the death of bats), disturbance that causes the loss of a maternity colony of bats (resulting in the death of young), or various modes of nonlethal pursuit or capture may be considered take as defined in Section 86 of the California Fish and Game Code. Impacts to maternity roosting sites of any native bat species, regardless of status, may be Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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considered a significant impact to a native wildlife nursery site under CEQA. In order to avoid potentially significant impacts to bats classified as SSC or to maternity colonies of non-SSC bats, MM BIO-2 and BIO5 are recommended.

The buildings and other anthropogenic structures as well as ornamental shrubs and trees located on and immediately adjacent to the Project Site could provide nesting habitat for nesting birds and raptors protected by the MBTA and California Fish and Game Code. Furthermore, the disturbed lot within the Project Site could provide nesting habitat for ground-nesting bird species. If construction of the Proposed Project occurs during the bird breeding season (typically January 15 through August 31 for raptors and February 1 through September 30 for the majority of migratory bird species), ground-disturbing construction activities could directly affect birds protected by the MBTA and their nests through the removal of habitat on the Project Site, and indirectly through increased noise, vibrations, and increased human activity. Impacts to nesting birds would be less than significant with the implementation of MM BIO-3 and BIO-5.

5.2 Sensitive Natural Communities
The Project Site consists of urban/developed and disturbed land covers. Neither of these land cover types are considered sensitive natural communities. Therefore, no impacts to sensitive natural communities are anticipated to result from the development of this Project.

5.3 State or Federally Protected Wetlands and Waters of the U.S.

Two aquatic features that are potentially jurisdictional to USACE, RWQCB, and/or CDFW occur within the Project Site (Figure 5). One feature was likely piped underground when initial development of the area occurred. The second feature is a concrete-lined channel that runs underneath Ontario Avenue via a box culvert. Direct impacts to aquatic resources could include any grading, trenching, excavation, or placement of temporary or permanent fill within a regulated feature. Indirect impacts include erosion and runoff into aquatic features. Should impacts to either of these aquatic resources be necessary, a formal aquatic resources delineation should be conducted to determine if it is subject to the jurisdiction of the USACE, RWQCB, and/or CDFW. If jurisdictional features are identified on the Project Site, coordination with the regulatory agencies (USACE, RWQCB, and/or CDFW) regarding regulatory permitting will be required. Additionally, preparation of a Determination of Biologically Equivalent or Superior Preservation (DBESP) will be required to satisfy MSHCP requirements for impacts to the riverine areas within the Project Site if impacts are unavoidable.

Regulatory permitting described above could require compensatory mitigation through the permit process. That mitigation could take the form of payment of an in-lieu fee, participation in a mitigation banking program, or some form of onsite or offsite restoration. The exact details of mitigation, such as type, location, and mitigation ratio, would be determined through the permit process with the regulatory agencies. Implementation of regulatory permitting and compensatory mitigation, if required, will reduce impacts to wetlands and Waters of the U.S. to a level that is less than significant.

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5.4 Wildlife Corridors and Nursery Sites
The majority of the Project Site is located within and adjacent to areas containing development and existing high-levels of anthropogenic disturbances. The Project Site is surrounded by highly trafficked roadways that could deter large wildlife from moving into the Project Site. Additionally, the Project Site’s value in providing wildlife movement opportunities is reduced by the fact that it is bordered by residential development to the north, west, south, and east. No migratory wildlife corridors were identified within the Project Site. No impacts resulting from the Project are expected to occur to wildlife corridors.

Potential for maternity roosting sites for bat species are present on the Project Site in the form of palm trees with large frond skirts, buildings, and a box culvert. The presence of maternity roosting sites would need to be confirmed during the maternity season through appropriate focused bat survey efforts. If present, the maternity roosting sites would be considered native wildlife nursery sites. Impacts to nursery sites would be less than significant with the implementation of MM BIO-2.

5.5 Habitat Conservation Plans and Natural Community Conservation Plans
The Project Site is located within the planning area for the MSHCP, but outside of any Cell Groups, Criteria Cells, and Subunit designations. The Project Site is located within a designated survey area for burrowing owl. Section 6.0 of the MSHCP requires assessment of the potential effects from the Project on biological resources including riparian/riverine areas, vernal pools, fairy shrimp, burrowing owl, and Narrow Endemic Plant Species. In addition, the MSHCP requires an Urban/Wildlands Interface analysis be conducted in order to address the indirect effects associated with locating proposed development in proximity of MSHCP Conservation Areas. These resources were assessed during the reconnaissance survey and are discussed below in relation to the Project.

The Proposed Project consists of roadway expansion of Ontario Avenue, providing three lanes of vehicular travel and bike lanes, resurfacing and restriping of the roadway, construction of raised landscaped median islands, and other associated roadway upgrades. In addition, the existing 8-inch PVC reclaimed water main line will be extended and sewer laterals will be constructed. Because development of the Project Site is a covered activity within the MSHCP, it is an allowable use that has been contemplated within the MSHCP.

However, projects that are covered still need to comply with MSHCP requirements.

5.5.1 Riparian/Riverine Areas, Vernal Pools, and Fairy Shrimp Species (MSHCP Section

6.1.2)
In accordance with Section 6.1.2 of the MSHCP, the biological reconnaissance survey included an assessment for riparian and riverine communities, vernal pools, and fairy shrimp. The MSHCP defines riparian/riverine area as “lands which contain habitat dominated by trees, shrubs, persistent emergent vegetation, or emergent mosses and lichens, which occur close to or that depend upon soil moisture from a nearby fresh water source, or areas with freshwater flow during all or a portion of the year.” The Project Site consists primarily of developed land. Where soils were present, they consisted primarily of gravelly loam and were compacted or anthropogenically altered from their natural state. The Project Site Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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lacks clay soils. No riparian habitat was identified within the Project Site. No vernal pool habitat or suitable habitat for fairy shrimp were documented during the biological reconnaissance survey.

A formal ARD was not conducted for the Project Site. However, the desktop review identified two aquatic resources within the Project Site. The first aquatic feature was not observed during the biological survey and is not visible on aerial imagery. This feature was likely piped underground when initial development of the area occurred. The second feature, a concrete-lined drainage channel, was visible during the biological survey.

Although the concrete-lined drainage channel lacked vegetation, it provides potentially suitable roosting habitat for one special-status species, pallid bat, as well as non-special-status bat species. While the drainage channel is concrete-lined and lacks vegetation, it provides suitable habitat for special-status wildlife species and can also be utilized by bird and raptor species protected under the MBTA. Direct impacts to species that utilize this area could occur in the form of habitat loss, mortality, injury, and/or nest failure. Indirect impacts in the form of habitat degradation, increased human activity, noise, dust, nighttime lighting, and/or ground vibrations may also occur.

If impacts to these two aquatic features is unavoidable, consultation with the agencies regarding regulatory permitting will be required. Preparation of a DBESP will also be required to satisfy MSHCP requirements. Note that a DBESP is required under the MSHCP regardless of agency jurisdiction of aquatic resources because the DBESP also addresses habitat for special-status species. If Project-related impacts to riparian/riverine areas occur, implementation of MM BIO-4would reduce these impacts to a level that is less than significant.

The MSHCP defines vernal pools as:
seasonal wetlands that occur in depression areas that have wetlands indicators of all three parameters (soils, vegetation, and hydrology) during the wetter portion of the growing season but normally lack wetlands indicators of hydrology and/or vegetation during the drier portion of the growing season.

Based on the literature review, field survey observations, and Google Earth imagery, the site appears to have been developed for at least 20 years. During the biological reconnaissance survey, there were no indications of the presence of vernal pools. No fairy shrimp species are expected to be within the Project Site. ECORP determined that fairy shrimp species have no potential to occur due to a lack of clay soils, developed nature of the Project Site, and no recent records in CNDDB within 5 miles of the Project Site.

No additional surveys are required due to a lack of suitable habitat. The Project is consistent with Section

6.1.2 of the MSHCP.

5.5.2 Narrow Endemic Plant Species (MSHCP Section 6.1.3) ECORP reviewed the RCA MSHCP Information Map to determine whether the Project Site is located within a Narrow Endemic Plant Species Survey Area (NEPSSA), in accordance with Section 6.1.3 of the MSHCP.

The Project Site is not located within a NEPSSA or a Criteria Area. Therefore, no focused surveys for narrow endemic plant species are warranted, and the Project is consistent with Section 6.1.3 of the MSHCP.

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5.5.3 Urban/Wildlands Interface Guidelines (MSHCP Section 6.1.4) The requirements for Urban/Wildlands Interface for the management of edge factors do not apply to the Project Site because the Project Site is not situated adjacent to any wildlands or MSHCP-designated Conservation Areas. Therefore, the Project is consistent with Section 6.1.4 of the MSHCP.

5.5.4 Burrowing Owl Habitat Assessment (MSHCP Section 6.3.2) A small portion of the Project Site is within a burrowing owl survey area as designated by the MSHCP and is subject to the MSHCP burrowing owl survey requirements. This small portion is located within the disturbed land cover, located at the corner of South Lincoln Avenue and Othello Lane, and is mapped on Figure 4. ECORP assessed the entire Project Site and a 500-foot buffer during the reconnaissance survey for potential burrowing owl habitat. The habitat assessment was performed in accordance with the MSHCP Burrowing Owl Survey Instructions (RCTLMA 2006).

Neither the area designated as a burrowing owl survey area nor the remainder of the Project Site offers suitable habitat for burrowing owl. The disturbed lot comprising the designated burrowing owl survey area is surrounded by development and is unsuitable for burrowing owl. This disturbed area would not support wintering or breeding activities due to the lack of suitable habitat. Despite the presence of several very small rodent burrows, the disturbed lot lacked an abundant prey source and large enough burrows to provide suitable habitat for burrowing owl. The few burrows observed were too small to support burrowing owl and evidence of regular ground disturbance (i.e., tilling) was evident. In addition to the lack of suitable habitat, the small size of the disturbed lot, urban setting, and location within the species’ range likely precludes the species from occurring in the Project Site and 500-foot buffer. Finally, no burrowing owls, occupied burrows (i.e., burrows containing whitewash, pellets, feathers, bones of prey), or owl sign (e.g., whitewash, pellets, feathers, prey remains) were observed during the burrowing owl habitat assessment. Therefore, no further surveys are required for burrowing owl, and the Project is consistent with Section 6.3.2 of the MSHCP.

5.5.5 Additional Surveys (MSHCP Section 6.3.2)
ECORP reviewed the RCA MSHCP Information Map to determine if the Project Site was located within any other MSHCP-designated survey areas beyond burrowing owl. The Information Map revealed that the Project Site is not located within amphibian species, criteria area species, or mammalian species survey areas. Therefore, no further habitat assessments or surveys are required for amphibian species, criteria area species, or mammalian species.

6.0 MITIGATION MEASURES
The following mitigation measures would reduce impacts to sensitive biological resources to a less than significant level.

BIO-1 Preconstruction Surveys for Crotch bumble bee: If the Crotch bumble bee is no longer a Candidate or formally Listed species under the California ESA at the time ground- Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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disturbing activities occur, then no additional protection measures are proposed for the species.

If the Crotch bumble bee is legally protected under the California ESA as a Candidate or Listed species at the time ground-disturbing activities are scheduled to begin, preconstruction surveys shall be conducted in accordance with CDFW’s Survey Considerations for California ESA Candidate Bumble Bee Species (CDFW 2023d) the season immediately prior to project implementation. A minimum of three Crotch bumble bee preconstruction surveys shall be conducted at 2- to 4-week intervals during the colony active period (April through August) when Crotch bumble bees are most likely to be detected.

Non-lethal, photo voucher surveys shall be completed by a biologist who holds a Memorandum of Understanding to capture and handle Crotch bumble bee (if nesting and chilling protocol is to be utilized) or by a CDFW-approved biologist experienced in identifying native bumble bee species (if surveys are restricted to visual surveys that will provide high-resolution photo documentation for species verification). The surveyor shall walk through all areas of suitable habitat focusing on areas with floral resources. Surveys shall be completed at a minimum of 1 person-hour of searching per 3 acres of suitable habitat during suitable weather conditions (sustained winds less than 8 miles per hour, mostly sunny to full sun, temperatures between 65 and 90 degrees Fahrenheit) at an appropriate time of day for detection (at least one hour after sunrise and at least 2 hours before sunset, though ideally between 9:00 a.m. and 1:00 p.m.).

If Crotch bumble bees are detected, CDFW shall be notified by the designated biologist as further coordination may be required to avoid or mitigate certain impacts. At a minimum, two nesting surveys shall be conducted with focus on detecting active nesting colonies within one week and 24-hours immediately prior to ground disturbing activities that are scheduled to occur during the flight season (February through October). If an active Crotch bumble bee nest is detected, an appropriate no disturbance buffer zone (including foraging resources and flight corridors essential for supporting the colony) shall be established around the nest to reduce the risk of disturbance or accidental take and the designated biologist shall coordinate with CDFW to determine if an Incidental Take Permit under Section 2081 of the California ESA will be required. Nest avoidance buffers may be removed at the completion of the flight season and/or once the qualified biologist deems the nesting colony is no longer active and CDFW has provided concurrence of that determination. If no nests are found but the species is present, a full-time qualified biological monitor shall be present during vegetation or ground disturbing activities that are scheduled to occur during the queen flight period (February through March), colony active period (March through September), and/or gyne flight period (September through October). Because bumble bees move nest sites each year, two preconstruction nesting surveys shall be required during each subsequent year of construction, regardless of the previous year’s findings, whenever vegetation and ground disturbing activities are scheduled to occur during the flight season if nesting and foraging habitat is still present or has re-established.

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BIO-2: Bat Habitat Assessment and Management Plan: Prior to the initiation of Project activities, a qualified biologist will conduct a bat habitat assessment for suitable bat roosting habitat. The habitat assessment should be conducted at least 1 year prior to the initiation of construction activities. If no suitable roosting habitat is identified, no further measures are necessary. If suitable roosting habitat and/or signs of bat use are identified during the assessment, the roosting habitat should be avoided to the extent possible. If the bat habitat assessment surveys reveal potential bat roosting habitat within the Project, a Bat Management Plan that will include specific avoidance and minimization measures to reduce impacts to roosting bats shall be prepared and consultation with CDFW initiated prior to the commencement of construction activities. The Project-specific Bat Management Plan may include any of the following as necessary and appropriate to the findings of the habitat assessment: emergence and/or preconstruction surveys for roosting bats including acoustic monitoring, roost removal timing and methodology, no-disturbance buffers, passive exclusion of bats, and/or species-specific replacement mitigation habitat.

BIO-3 Preconstruction Nesting Birds Surveys: To the greatest extent practicable, grounddisturbing activities, including vegetation removal and building demolition, shall be conducted outside of the nesting bird season (approximately September 16 through January 31) to avoid direct and indirect impacts to nesting birds. This will avoid violations of the MBTA and California Fish and Game Code §§ 3503, 3503.5 and 3513. If Project-related activities cannot avoid the nesting bird season, then preconstruction surveys and biological monitoring during Project activities will be necessary to avoid impacts to nesting birds.

Preconstruction surveys shall be conducted for nesting birds including special-status species.

Surveys will be conducted by a qualified bird biologist who is knowledgeable of the bird species occurring in the region and is experienced surveying for and identifying the common and special-status bird species with potential to occur. Surveys will be conducted in all areas of suitable habitat within the Project Site and an appropriately sized buffer where Projectrelated activities have potential to impact nesting birds during the breeding season. The survey shall be completed no more than three days prior to initial ground disturbance during the nesting bird season. Due to the size of the Project, multiple preconstruction nesting bird surveys may need to be conducted to account for different Project activities commencing in various areas of the Project or to account for any lapse in Project activities during the breeding season. The nesting bird survey shall include the Project Site and adjacent areas where Project activities have the potential to affect active nests, either directly or indirectly due to construction activity or noise. If no nesting birds are observed during the survey, site preparation and construction activities may begin. If an active nest is identified, the biologist shall establish an appropriately sized non-disturbance buffer around the nest using flagging or staking until nesting has been completed. The width of the non-disturbance buffer will be determined by the Project biologist. Typically, this is a minimum of 300 feet for passerine species from the nest site in all directions (500 feet is typically recommended by CDFW for raptors and listed species), until the juveniles have fledged and left the nest site and there Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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has been no evidence of a second attempt at nesting. Construction activities, including vegetation removal activities, shall not occur within any non-disturbance buffer zones until the nest is deemed inactive by the qualified bird biologist.

BIO-4 Aquatic Resources and Best Management Practices (BMPs): The Project Site crosses over two channels that are potentially jurisdictional to the USACE, Santa Ana RWQCB, and CDFW. If these channels cannot be avoided by Project activities and are to be impacted (e.g., altered or filled) in any way by the Project, coordination and regulatory permitting with the aforementioned agencies will be necessary and a DBESP should be prepared due to impacts to a riverine feature per the MSHCP. Therefore, all channels and potentially jurisdictional features should be avoided by the Project, through use of the following BMPs:
 All ground-based equipment and vehicles will stay on designated, existing dirt roads within the Project boundaries.
 A Stormwater Pollution Prevention Plan that established BMPs to deal with stormwater runoff will be prepared and followed in order to minimize soil erosion and avoid any stormwater runoff into jurisdictional features.  All staging of construction materials will be located within the Project boundaries and outside of jurisdictional features.
 An erosion control plan will be developed to prevent road maintenance and Projectrelated, road use-generated erosion from entering channels.  Schedule operations and use of the access roads for when rain, runoff, or wet soils, are less likely. Follow seasonal restrictions in the wet weather operation section of the erosion control plan.
 Service and refueling areas will be established at least 100 meters away from wet areas and surface flow.
 All construction activities will remain at least 25 feet away from any jurisdictional features.
 Live vegetation located in and near jurisdictional features will not be thinned, modified, or pruned.

BIO-5 Biological Monitoring: Prior to the start of construction, a Worker Environmental Awareness Program (WEAP) shall be developed. A qualified biologist with experience with the sensitive biological resources in the region will provide WEAP training to all personnel working in the Project area (either temporarily or permanently) prior to the start of Project activities. The WEAP would include, but will not be limited to, discussions of the sensitive biological resources associated with the Project with a specific focus on aquatic resources, Crotch bumble bee, nesting birds, and special-status bat species with potential to occur within the Project Site.

A qualified biologist familiar with species that have potential to occur on the Project Site shall be present to monitor all ground-disturbing and vegetation-removal activities and structure demolition activities conducted for the Project, regardless of the time of year these Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

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activities are conducted. The qualified biologist shall be experienced with identification of sensitive and common biological resources in the region including aquatic resources, Crotch bumble bee, roosting bats, and nesting birds. The monitor will be responsible for working with The City of Corona and their contractor to ensure that impacts to special-status species and sensitive biological resources are avoided to the greatest extent possible. Biological monitoring shall take place until the construction is completed or at the discretion of the Project biologist based on expected Project activities. In general, the timing and frequency of biological monitoring will be implemented at the discretion of the Project biologist.

Construction activities should not occur within any non-disturbance buffer zones established around environmentally sensitive areas as established by the Project biologist. If specialstatus species, including Crotch bumble bee, are detected during biological monitoring activities and Project-related impacts to the species are unavoidable, then consultation with the USFWS and/or CDFW may need to be conducted to develop and implement a mitigation plan that will avoid and offset impacts to these species or obtain take authorization under the federal and California ESAs before Project activities can continue. Mitigation measures may consist of seasonal work restrictions or additional biological monitoring activities after initial ground-disturbing activities are complete.

6.1 Additional Recommendations
The MSHCP provides additional measures in the Construction Guidelines under Section 7.5.3 and in Standard Best Management Practices provided in Volume I, Appendix C of the plan. These measures include the following:
 Clearly marking or flagging work area boundaries.
 To ensure that vegetation and wildlife habitat outside of the designated work areas are not impacted by Project-related activities, the City of Corona should ensure that all vehicles and equipment are parked on either pavement, existing roads, and/or previously disturbed areas.  Prohibiting domestic animals from being in the Project Area during Project activities.  All general trash, food-related trash items (e.g., wrappers, cans, bottles, food scraps, cigarettes) should be stored in closed containers and/or removed from the site each day.  Firearms should not be allowed onsite, unless either approved by the City of Corona for security personnel or authorized pursuant to a CDFW license.  Cap all construction pipes, culverts, or similar structures with a diameter of 4 inches or greater while stored onsite or when not in use.
 Restrict use of rodenticides and herbicides on the Project to prevent primary or secondary poisoning of wildlife including burrowing owl and other raptors and the depletion of prey populations on which they depend. All uses of such compounds should observe label and other restrictions mandated by the U.S. Environmental Protection Agency, California Department of Food and Agriculture, and other state and federal legislation. If rodent control Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
42 July 2024
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must be conducted, zinc phosphide should be used because of a proven lower risk to burrowing owl.

7.0 CERTIFICATION
I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this biological evaluation, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Field work conducted for this assessment was performed by me or under my direct supervision. I certify that I have not signed a non-disclosure or consultant confidentiality agreement with the project applicant or the applicant’s representative and that I have no financial interest in the project.

Signed: Date: February 2024
Taylor Dee
Senior Biologist
Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
43 July 2024
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8.0 REFERENCES
Baldwin, B.G., D.H Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken, editors. 2012. The Jepson Manual; Vascular Plants of California, Second Edition. University of California Press, Berkeley, California. 1,519 pp. + app.

Bradley, R.D., L.K. Ammerman, R.J. Baker, L.C. Bradley, J.A Cook, R.C. Dowler, C. Jones, D. J. Schmidly, F.B.

Stangl, Jr., R.A. Van Den Bussche, B. Wursig. 2014. Revised Checklist of North American Mammals North of Mexico. Museum of Texas Tech University.

CalFlora: Information on California plants for education, research and conservation. [Web application]. 2023. Berkeley, California: The CalFlora Database [a non-profit organization]. Available from:
http://www.calflora.org.

California Department of Fish and Wildlife (CDFW). 2023a. Environmental Review and Permitting. Available online: https://wildlife.ca.gov/Conservation/Environmental-Review. _____. 2023b. California Native Diversity Database. RareFind 5 [computer program]. Sacramento (CA): State of California, the Resources Agency, Department of Fish and Wildlife. Available from:
https://wildlife.ca.gov/Data/CNDDB/Maps-and-Data.
_____. 2023c. Western Riverside County Regional Conservation Authority, Multiple Species Habitat Conservation Plan. Species Occurrence Data 2005-2018 (Manager’s Version). Biological Monitoring Program Database. Accessed here: https://map.dfg.ca.gov/metadata/ds0989.html _____. 2023d. State and Federally Listed Endangered and Threatened Animals of California. State of California, Natural Resources Agency, Department of Fish and Wildlife, Biogeographic Data Branch, California Natural Diversity Database (CNDDB).
_____. 2023e. Special animals list. Sacramento (CA): State of California, the Resources Agency, Department of Fish and Wildlife.
_____. 2022. CDFW Seeks Public Comment Related to Crotch’s Bumble Bee, Franklin’s Bumble Bee, Suckley’s Bumble Bee, and Western Bumble Bee. Available from:
https://wildlife.ca.gov/News/cdfw-seeks-public-comment-related-to-crotchs-bumble-beefranklins-bumble-bee-suckleys-cuckoo-bumble-bee-and-western-bumble-bee#gsc.tab=0.

California Department of Fish and Game (CDFG). 1984. California Endangered Species Act. Fish and Game Code Section 2050-2085.

California Native Plant Society (CNPS). 2023a. Inventory of Rare and Endangered Plants (online edition, v7- 08c). Rare Plant Scientific Advisory Committee. California Native Plant Society. Sacramento, CA.

Available at: http://www.cnps.org/inventory.
_____. 2023b. A Manual of California Vegetation, Online Edition. California Native Plant Society, Sacramento, CA. https://vegetation.cnps.org/.

Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
44 July 2024
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Chesser, R.T., K.J. Burns, C. Cicero, J.L. Dunn, A.W. Kratter, I.J. Lovette, P.C. Rasmussen, J.V. Remsen, Jr., D.F.

Stotz, and K. Winker. 2023. Check-list of North American Birds (online), 7th edition with 64th Supplement. American Ornithological Society. http://checklist.aou.org/taxa. eBird. 2024. eBird: An online database of bird distribution and abundance [web application]. eBird, Cornell Lab of Ornithology, Ithaca, New York. Available: http://www.ebird.org. Accessed January 10, 2023.

Google Earth. 2024. Version 7.3.6.9345. Corona 33.857667°, -117.581829°. [Online] Available at:
http://www.google.com/earth/index.html.

Natural Resources Conservation Service (NRCS). 2023. "Web Soil Survey" from http://websoilsurvey.nrcs.usda.gov.

NatureServe. 2023. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available:
https://explorer.natureserve.org/. Accessed: January 2023.

Regional Conservation Authority (RCA). 2024. RCA MSHCP Information Tool. Available from:
https://www.wrc-rca.org/rcamaps/
Riverside County Transportation and Land Management Agency (RCTLMA). 2024. Western Riverside County Multiple Species Habitat Conservation Plan. Available from:
http://rctlma.org/Portals/0/mshcp/volume1/index.html
Sawyer, J.O., T. Keeler-Wolf, and J.M. Evens. 2009. A Manual of California Vegetation, 2nd ed. California Native Plant Society, Sacramento, CA.

Skinner, M.W., and Pavlik (eds.). 1994. Inventory of Rare and Endangered Vascular Plants of California; Fifth Edition. California Native Plant Society, Sacramento, California.

Society for the Study of Amphibians and Reptiles. 2017. Scientific and Standard English Names of Amphibians and Reptiles of North American North of Mexico, With Comments Regarding Confidence in our Understanding. Eighth Edition. Committee on Standard English and Scientific Names.

State Water Resources Control Board (SWRCB). 2021. State Policy for Water Quality Control: State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State.

Adopted April 2, 2020, and revised April 6, 2021.

The Xerces Society, Wildlife Preservation Canada, York University, University of Ottawa, The Montreal Insectarium, The London Natural History Museum, BeeSpotter. 2023. Data accessed from Bumble Bee Watch, a collaborative website to track and conserve North America’s bumble bees. Available from http://www.bumblebeewatch.org/app/#/bees/lists. Accessed January 19, 2024. _____. 2018. A Petition to the State of California Fish and Game Commission to List the Crotch Bumble Bee (Bombus crotchii), Franklin’s Bumble Bee (Bombus franklini), Suckley cuckoo Bumble Bee (Bombus suckleyi), and Western Bumble Bee (Bombus occidentalis occidentalis) as Endangered under the Biological Technical Report and MSHCP Consistency Analysis ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
45 July 2024
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California Endangered Species Act. Available from: https://xerces.org/sites/default/files/2019- 10/CESA-petition-Bombus-Oct2018.pdf.

U.S. Fish and Wildlife Service (USFWS). 2023a. California Fish and Wildlife Office Occurrence Data.

Available at: https://www.fws.gov/media/gis-species-occurrence-data-0. _____. 2023b. Critical Habitat for Threatened and Endangered Species. Available from:
https://ecos.fws.gov/ecp/report/table/critical-habitat.html. _____. 2023c. "National Wetlands Inventory" from https://www.fws.gov/wetlands/data/Mapper.html.

Accessed December 5, 2023.
_____. 1918. Migratory Bird Treaty Act of 1918. Section 16 of the U.S. Code (703-712), as amended 1989.

U.S. Geological Survey (USGS). 2023. "The National Map" from https://apps.nationalmap.gov/viewer/.

Accessed December 2023.

LIST OF APPENDICES
Appendix A – Potential for Occurrence of Sensitive Plant Species Appendix B – Potential for Occurrence of Sensitive Wildlife Species Appendix C – Representative Site Photographs
Appendix D – Plant Species Observed
Appendix E – Wildlife Species Observed

APPENDIX A
Potential for Occurrence of Sensitive Plant Species
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-1 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
Abronia villosa var.
aurita
chaparral sandverbena
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
none
(Jan) Mar-Sep
75-1600
Occurs in chaparral, coastal
scrub, and desert dune
habitats. Often found in
sandy soil.

Presumed Absent: While
sandy loam soils are
present in a small portion
of the Project Site, that
area is largely disturbed,
and no suitable habitat is
present. Additionally, only
historic records exist
within 5 miles of the
Project Site.

Allium marvinii
Yucaipa onion
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-May
760-1065
Occurs in openings of
chaparral in clay soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Allium munzii
Munz' onion
Fed:

Ca:

CRPR:

MSHCP:

END
THR
1B.1
COV
Mar-May
297-1070
Occurs in chaparral,
cismontane woodland,
coastal scrub, pinyon and
juniper woodland, and
valley and foothill
grassland in mesic clay
soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Ambrosia pumila
San Diego ambrosia
Fed:

Ca:

CRPR:

MSHCP:

END
none
1B.1
COV
Apr-Oct
20-415
Occurs in chaparral, coastal
scrub, valley and foothill
grassland, and vernal
pools. Found in sandy loam
or clay soils, often in
disturbed areas and
sometimes in alkaline
areas.

Presumed Absent: While
marginally suitable
disturbed habitat is
present in a small portion
of the Project Site, there
are no records of the
species within 5 miles of
the Site.

Arctostaphylos
rainbowensis
rainbow manzanita
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Dec-Mar
205-670
Occurs in chaparral habitat. Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Astragalus
brauntonii
Braunton's milkvetch
Fed:

Ca:

CRPR:

MSHCP:

END
none
1B.1
none
Jan-Aug
5-640
Occurs in chaparral, coastal
scrub, and valley and
foothill grassland habitats.

Sometimes found in
recently burned or
disturbed areas. Usually
found in sandstone soils
with carbonate layers.

Presumed Absent: One
recent record (Occ. #4)
was documented
approximately 4.7 miles
west of the Project Site in
the nearby undeveloped
canyons (CDFW 2023).

However, no suitable
habitat is present in the
Project Site.

Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-2 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
Astragalus
pachypus var.
jaegeri
Jaeger's milk-vetch
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Dec-Jun
365-975
Occurs in chaparral,
cismontane woodland,
coastal scrub, and valley
and foothill grassland
habitats. Sometimes found
in sandy or rocky soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Atriplex coronata
var. notatior
San Jacinto Valley
crownscale
Fed:

Ca:

CRPR:

MSHCP:

END
none
1B.1
COV
Apr-Aug
139-500
Occurs in alkaline soils of
playas, vernal pools, and in
mesic valley and foothill
grasslands.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Atriplex coulteri
Coulter's saltbush
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
none
Mar-Oct
3-460
Occurs in coastal bluff
scrub, coastal dunes,
coastal scrub, and valley
and foothill grassland.

Found sometimes in
alkaline and clay soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Atriplex parishii
Parish's brittlescale
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Jun-Oct
25-1900
Occurs in chenopod scrub,
playas, and vernal pools in
alkaline soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Atriplex serenana
var. davidsonii
Davidson's saltscale
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-Oct
10-200
Occurs in coastal bluff
scrub and coastal scrub in
alkaline soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Baccharis
malibuensis
Malibu baccharis
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Aug
150-305
Occurs in chaparral,
cismontane woodland,
coastal scrub and riparian
woodland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Berberis nevinii
Nevin's barberry
Fed:

CA:

CRPR:

MSHCP:

END
END
1B.1
COV
(Feb) Mar-Jun
70-825
Occurs in chaparral,
cismontane woodland,
coastal scrub, and riparian
woodland. Sometimes
found in sandy or gravelly
soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-3 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
Boechera
johnstonii
Johnston's rockcress
Fed:

CA:

CRPR:

MSHCP:
none
none
1B.2
COV
Feb-Jun
1350-2150
Occurs in clay soils of
chaparral and lower
montane coniferous forest.

Often found on eroded
clay.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Brodiaea filifolia
thread-leaved
brodiaea
Fed:

Ca:

CRPR:

MSHCP:

THR
END
1B.1
COV
Mar-Jun
24-1120
Occurs in cismontane
woodland, coastal scrub,
playas, valley and foothill
grassland, vernal pools,
and in openings of
chaparral. Often found in
clay soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Brodiaea orcuttii
Orcutt's brodiaea
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
May-Jul
30-1692
Occurs in closed-cone
coniferous forest,
chaparral, cismontane
woodland, meadows and
seeps, valley and foothill
grassland, and vernal pools
in mesic, clay, and
sometimes serpentinite
soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

California
macrophylla
round-leaved filaree
Fed:

Ca:

CRPR:

MSHCP:
none
none
none
COV
Mar-Jul
15-1200
Occurs in clay soils and
openings of cismontane
woodland, foothill
woodland, valley grassland,
and scrub habitats.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no records of
the species within 5 miles
of the Site.

Calochortus
palmeri var. munzii
San Jacinto
mariposa lily
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-Jul
855-2200
Occurs in chaparral, lower
montane coniferous forest,
and meadows and seeps.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Calochortus
plummerae
Plummer's mariposa
lily
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
May-Jul
100-1700
Occurs in chaparral,
cismontane woodland,
coastal scrub, lower
montane coniferous forest,
and valley and foothill
grassland in granitic, rocky
soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Calochortus weedii
var. intermedius
intermediate
mariposa-lily
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
May-Jul
105-855
Occurs in chaparral, coastal
scrub, and valley and
foothill grassland in rocky,
calcareous soils.

Presumed Absent: While
recent records for the
species exist in the nearby
undeveloped canyons, no
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-4 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
suitable habitat is present
on the Project Site.

Ceanothus
ophiochilus
Vail Lake ceanothus
Fed:

Ca:

CRPR:

MSHCP:

THR
END
1B.1
COV
Feb-Mar
580-1065
Occurs in chaparral in
gabbroic or pyroxenite-rich
outcrops.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Centromadia
pungens ssp. laevis
smooth tarplant
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Apr-Sep
0-640
Occurs in chenopod scrub,
meadows and seeps,
playas, riparian woodlands,
and valley and foothill
grassland habitats. Often
found in alkaline soil.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Chorizanthe
leptotheca
peninsular
spineflower
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
May-Aug
300-1900
Occurs in granitic soils of
chaparral, coastal scrub,
and lower montane
coniferous forests in
alluvial fan habitats.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Chorizanthe parryi
var. fernandina
San Fernando Valley
spineflower
Fed:

Ca:

CRPR:

MSHCP:
none
END
1B.1
none
Apr-Jul
150-1220
Occurs in sandy soils of
coastal scrub and valley
and foothill grassland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Chorizanthe parryi
var. parryi
Parry's spineflower
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Apr-Jun
275-1220
Occurs in openings of
chaparral, cismontane
woodland, coastal scrub,
and valley and foothill
grassland habitat.

Sometimes found in sandy
or rocky soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Chorizanthe
polygonoides var.
longispina
long-spined
spineflower
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-Jul
30-1530
Occurs in chaparral, coastal
scrub, meadows and seeps,
valley and foothill
grasslands, and vernal pool
habitats. Often found in
clay soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Clinopodium
chandleri
San Miguel savory
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Mar-Jul
120-1075
Occurs in metavolcanic
soils of chaparral,
cismontane woodland,
coastal scrub, riparian
woodland, and valley and
foothill grassland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-5 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
Sometimes found in rocky
or gabbroic soils.

Comarostaphylis
diversifolia ssp.
diversifolia
summer holly
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
none
Apr-Jun
30-790
Occurs in chaparral or
cismontane woodland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Deinandra
mohavensis
Mojave tarplant
Fed:

Ca:

CRPR:

MSHCP:
none
END
1B.3
COV
(Jan-May) JunOct
640-1600
Occurs in chaparral, coastal
scrub, and riparian scrub in
mesic soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Diplacus
clevelandii
Cleveland's bush
monkeyflower
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
Apr-Jul
450-2000
Occurs in chaparral,
cismontane woodland, and
lower montane coniferous
forest.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Dodecahema
leptoceras
slender-horned
spineflower
Fed:

Ca:

CRPR:

MSHCP:

END
END
1B.1
COV
Apr-Jun
200-760
Occurs in sandy soils of
chaparral, cismontane
woodland, and alluvial fan
coastal scrub.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Dudleya cymosa
ssp. ovatifolia
Santa Monica
dudleya
Fed:

Ca:

CRPR:

MSHCP:

THR
none
1B.1
none
Mar-Jun
150-1675
Occurs in rocky soils of
chaparral and coastal scrub
in rocky soils. Sometimes
found in sedimentary or
volcanic soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Dudleya
multicaulis
many-stemmed
dudleya
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-Jul
15-790
Occurs in chaparral, coastal
scrub, and valley and
foothill grassland habitats.

Often found in clay soils.

Presumed Absent: One
recent record (Occ. #191)
was documented
approximately 3.2 miles
west of the Project Site in
the nearby undeveloped
canyons (CDFW 2023).

However, no suitable
habitat is present in the
Project Site.

Dudleya viscida
sticky dudleya
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
May-Jun
10-550
Occurs in coastal bluff
scrub, chaparral,
cismontane woodland, and
coastal scrub in rocky soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-6 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
records of the species
within 5 miles of the Site.

Eriastrum
densifolium ssp.
sanctorum
Santa Ana River
woollystar
Fed:

Ca:

CRPR:

MSHCP:

END
END
1B.1
COV
Apr-Sep
91-610
Occurs in chaparral and
alluvial fan coastal scrub.

Sometimes found in sandy
or gravelly soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Eryngium
aristulatum var.
parishii
San Diego buttoncelery
Fed:

Ca:

CRPR:

MSHCP:

END
END
1B.1
COV
Apr-Jun
20-620
Occurs in coastal scrub,
valley and foothill
grassland, and vernal pools
in mesic soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Galium
angustifolium ssp.
jacinticum
San Jacinto
Mountains bedstraw
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.3
COV
Jun-Aug
1350-2100
Occurs in lower montane
coniferous forest.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Galium
californicum ssp.
primum
Alvin Meadow
bedstraw
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
May-Jul
1350-1700
Occurs in chaparral and
lower montane coniferous
forest in granitic, sandy
soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Hesperocyparis
forbesii
Tecate cypress
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
none
N/A
80-1500
Occurs in clay soils of
closed-cone coniferous
forests and chaparral.

Sometimes found in
gabbroic or metavolcanic
soils.

Presumed Absent: While
recent records for the
species exist in the nearby
undeveloped canyons, no
suitable habitat is present
on the Project Site.

Hesperocyparis
goveniana
Gowen cypress
Fed:

Ca:

CRPR:

MSHCP:

THR
none
1B.2
none
N/A
30-300
Occurs in maritime
chaparral and closed-cone
coniferous forests.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Heuchera
hirsutissima
shaggy-haired
alumroot
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.3
COV
(May) Jun-Jul
1520-3500
Occurs in subalpine
coniferous forest and
upper montane coniferous
forest in rocky, granitic
soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-7 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
Holocarpha virgata
ssp. elongata
graceful tarplant
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
May-Nov
60-1100
Occurs in chaparral,
cismontane woodland,
coastal sage scrub, and
valley and foothill
grassland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Horkelia cuneata
var. puberula
mesa horkelia
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
none
Feb-Jul (Sep)
70-810
Occurs in cismontane
woodland, coastal scrub,
and maritime chaparral.

Sometimes found in sandy
or gravelly soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Hulsea vestita ssp.
callicarpha
beautiful hulsea
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
May-Oct
915-3050
Occurs in granitic soils of
chaparral and lower
montane coniferous forest.

Sometimes found in rocky
or gravelly soils.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Lasthenia glabrata
ssp. coulteri
Coulter’s goldfields
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Feb-Jun
1-1220
Occurs in playas, vernal
pools, and in coastal salt
marshes and swamps.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Lepechinia
cardiophylla
heart-leaved pitcher
sage
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-Jul
520-1370
Occurs in closed-cone
coniferous forest,
chaparral, and cismontane
woodland.

Presumed Absent: While
recent records for the
species exist in the nearby
undeveloped canyons, no
suitable habitat is present
on the Project Site.

Lilium humboldtii
ssp. ocellatum
ocellated Humboldt
lily
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
Mar-Jul (Aug)
30-1800
Occurs in openings of
chaparral, cismontane
woodland, coastal scrub,
lower montane coniferous
forest, and riparian
woodland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Lilium parryi
Lemon lily
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Jul-Aug
1220-2745
Occurs in mesic soils of
lower and upper montane
coniferous forests,
meadows and seeps, and
riparian forests.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Limnanthes alba
ssp. parishii
Parish's
meadowfoam
Fed:

Ca:

CRPR:

MSHCP:
none
END
1B.2
COV
Apr-Jun
600-2000
Occurs in vernally mesic
soils in lower montane
coniferous forests,
Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-8 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
meadows and seeps, and
vernal pools.
suitable habitat is present
on site.

Microseris
douglasii ssp.
platycarpha
small-flowered
microseris
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
Mar-May
15-1070
Occurs in clay soils of
cismontane woodland,
coastal scrub, valley and
foothill grassland, and
vernal pools.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Monardella
macrantha ssp.
hallii
Hall's monardella
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.3
COV
Jun-Oct
730-2195
Occurs in broadleafed
upland forest, cismontane
woodland, chapparal, lower
montane coniferous forest,
and valley and foothill
grassland.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Muhlenbergia
californica
California muhly
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.3 COV
Jun-Sep
100-2000
Occurs in mesic soils of
chaparral, coastal scrub,
lower montane coniferous
forest, and in meadows,
seeps, and along
streambanks.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Nama stenocarpa
mud nama
Fed:

Ca:

CRPR:

MSHCP:
none
none
2B.2
COV
Jan-Jul
5-500
Occurs in marshes and
swamps and along lake
margins and riverbanks.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Navarretia fossalis
spreading navarretia
Fed:

Ca:

CRPR:

MSHCP:

THR
none
1B.1
COV
Apr-Jun
30-655
Occurs in chenopod scrub,
playas, vernal pools, and in
shallow freshwater marshes
and swamps.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Navarretia
prostrata
prostrate navarretia
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Apr-Jul
3-1210
Occurs in mesic soils of
coastal scrub, meadows
and seeps, vernal pools,
and in alkaline valley and
foothill grassland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Nolina cismontana
chaparral nolina
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
none
(Mar) May-Jul
140-1,275
Occurs in chaparral and
coastal scrub. Sometimes
occurs in gabbroic or
sandstone soils.

Presumed Absent: One
recent record (Occ. #56)
was documented
approximately 1.1 miles
southwest of the Project
Site in the nearby
undeveloped canyons
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-9 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
(CDFW 2023). However,
no suitable habitat is
present in the Project Site.

Orcuttia californica
California Orcutt
grass
Fed:

Ca:

CRPR:

MSHCP:

END
END
1B.1
COV
Apr-Aug
15-660
Occurs in vernal pools,
freshwater wetlands, valley
grassland, and other
wetland-riparian habitats.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Penstemon
californicus
California
beardtongue
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
May-Jun (Aug)
1170-2300
Occurs in sandy soils of
chaparral, lower montane
coniferous forest, and
pinyon and juniper
woodland.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Pentachaeta aurea
ssp. allenii
Allen's pentachaeta
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
none
Mar-Jun
75-520
Occurs in valley and foothill
grassland and in openings
of coastal scrub.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Phacelia stellaris
Brand's star phacelia
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.1
COV
Mar-Jun
1-400
Occurs in coastal dunes
and coastal scrub.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Polygala cornuta
var. fishiae
Fish's milkwort
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.3 COV
May-Aug
90-1270
Occurs in chaparral,
cismontane woodland, and
riparian woodland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Potentilla rimicola
cliff cinquefoil
Fed:

Ca:

CRPR:

MSHCP:
none
none
2B.3
COV
Jul-Sep
2400-2800
Occurs in granitic and
rocky soils of subalpine
coniferous forest and
upper montane coniferous
forest.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Pseudognaphalium
leucocephalum
white rabbittobacco
Fed:

Ca:

CRPR:

MSHCP:
none
none
2B.2
none
(Jul) Aug-Nov
(Dec)
0-2100
Occurs in sandy or gravelly
soils of chaparral,
cismontane woodland,
Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-10 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
coastal scrub, and riparian
woodland.
records of the species
within 5 miles of the Site.

Romneya coulteri
Coulter's matilija
poppy
Fed:

Ca:

CRPR:

MSHCP:
none
none

4.2 COV
Mar-Jul (Aug)
20-1200
Occurs in chaparral and
coastal scrub. Often found
in burned areas.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Senecio aphanactis
chaparral ragwort
Fed:

Ca:

CRPR:

MSHCP:
none
none
2B.2
none
Jan-Apr (May)
15-800
Occurs in chaparral,
cismontane woodland, and
coastal scrub. Sometimes
found in alkaline soils.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Sibaropsis
hammittii
Hammitt's clay-cress
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
COV
Mar-Apr
720-1065
Occurs in clay soils of valley
and foothill grassland, and
in openings of chaparral.

Presumed Absent: The
Project Site is outside of
the elevational range for
the species and no
suitable habitat is present
on site.

Sidalcea
neomexicana
salt spring
checkerbloom
Fed:

Ca:

CRPR:

MSHCP:
none
none
2B.2
none
Mar-Jun
15-1530
Occurs in alkaline, mesic
soils of chaparral, coastal
scrub, lower montane
coniferous forest,
Mojavean desert scrub, and
playas.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Symphyotrichum
defoliatum
San Bernardino aster
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
none
Jul-Nov
2-2040
Occurs in meadows and
seeps, marshes, and
swamps, coastal scrub,
cismontane woodland,
lower montane coniferous
forest, and vernally mesic
valley and foothill
grassland. Often found in
disturbed areas and near
ditches, streams,
streambanks, and springs.

Presumed Absent: While
marginally suitable
disturbed habitat is
present in a small portion
of the Project Site, there
are no records of the
species within 5 miles of
the Site.

Tortula californica
California screw
moss
Fed:

Ca:

CRPR:

MSHCP:
none
none
1B.2
none
N/A
10-1460
Occurs in sandy soils of
chenopod scrub and valley
and foothill grassland.

Presumed Absent: No
suitable habitat is present
on the Project Site and
there are no recent
records of the species
within 5 miles of the Site.

Trichocoronis
wrightii var.
wrightii
Fed:

Ca:
none
none
May-Sep
5-435
Occurs in alkaline soils of
meadows and seeps,
marshes and swamps,
Presumed Absent: No
suitable habitat is present
on the Project Site and
Appendix A – Plant Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
A-11 February 2024
2023-213
Scientific Name
Common Name Status
Bloom Period
& Elevation
(meters) Habitat Requirements Potential for Occurrence
Wright's
trichocoronis
CRPR:

MSHCP:
2B.1
COV
riparian forests, and vernal
pools.
there are no recent
records of the species
within 5 miles of the Site.

Status Codes:

Federal Designations: State designations: CRPR Ranking
(Federal Endangered Species Act,
USFWS)
END: federally listed, endangered
THR: federally listed, threatened
(California Endangered Species Act,
CDFG)
END: state-listed, endangered
THR: state-listed, threatened
CAN: Candidate for state listing
FP: Fully Protected Species
SSC: Species of Special Concern
1A: Presumed extinct
1B: Rare, threatened, or endangered in
California and elsewhere
2B: Rare, threatened, or endangered in
California, but more common
elsewhere
3: Review list of plants requiring more
study
4: Plants of limited distribution watch
list
Other Designations
COV: Covered under the Western Riverside MSHCP
CRPR Threat Code

0.1: Seriously threatened in California

0.2: Fairly threatened in California

0.3: Not very threatened in California
Source: California Natural Diversity Data Base (CNDDB) California Native Plant Society Electronic Inventory (CNPSEI) Corona South, Prado Dam, Corona North, Riverside West, Black Star Canyon, Lake Mathews, El Toro, Santiago Peak, and Alberhill 7.5-minute quads.

APPENDIX B
Potential for Occurrence of Sensitive Wildlife Species
Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-1 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Invertebrates
Bombus crotchii
Crotch bumble bee
Fed:

CA:

MSHCP:
none
CAN
none
Found in coastal California east to
the Sierra-Cascade crest and
south into Mexico. Occurs in open
grassland and scrub habitats.

Prefers a diet consisting of certain
plant species including
milkweeds, dusty maidens,
lupines, medics, phacelias, sages,
clarkias, poppies, and wild
buckwheats. Nests are often
located underground in
abandoned rodent nests, or
above ground in tufts of grass,
old bird nests, rock piles, or
cavities in dead trees.

Low. Limited nesting habitat
was present in the Project Site,
in the disturbed lot where
small mammal burrows were
present. Ornamental
vegetation in the
urban/developed areas of the
Project Site provide foraging
habitat for the species. Only
historic CNDDB records exist
within 5 miles of Project Site;
however, 1 recent record (Occ
#423) was documented
approximately 9 miles
northwest of the Project Site at
Chino Hills State Park in July
2020. The closest CNDDB
record (Occ #197) was
recorded in March 1933 in
Corona, approximately 0.3
miles north of the Project Site.

No Bumble Bee Watch records
were identified within 5 miles
of the Project Site. The closest
Bumble Bee Watch records
were 8 individuals documented
on August 2023 at Walnut
Reservoir in Anaheim
approximately 8.8 miles west
of the Project Site.

Branchinecta lynchi
vernal pool fairy shrimp
Fed:

CA:

MSHCP:

THR
none
COV
Vernal pools and ephemeral
wetlands. Typically occurs in small
and shallow pools with mud or
grassy bottoms.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Branchinecta
sandiegoensis
San Diego fairy shrimp
Fed:

CA:

MSHCP:

END
none
none
Restricted to vernal and shallow
ephemeral basins in Orange and
San Diego Counties.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Danaus plexippus
pop. 1
monarch butterfly
(overwintering
population)
Fed:

CA:

MSHCP:

FC
none
none
Roosts in wind-protected tree
groves (Coastal California conifer,
Eucalyptus) from Northern
Mendocino to Baja California.

Presumed Absent. No
suitable overwintering habitat
is present on the Project Site.

Several lone standing
eucalyptus trees were present
in the buffer; however, they are
not wind protected and no
tree grove habitat was present
Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-2 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence within the Project Site or 500-ft
buffer.

Euphydryas editha
quino
Quino checkerspot
butterfly
Fed:

CA:

MSHCP:

END
none
COV
Occurs in sunny openings within
chaparral and coastal sage scrub
in parts of Riverside and San
Diego counties. Occurs on hills
and mesas along the coast.

Requires high densities of food
plants Plantago erecta, P.
insularis, and Orthocarpus
purpurescens.

Presumed Absent. No
suitable habitat was present
within the Project Site or 500-
foot buffer.

Linderiella santarosae
Santa Rosa Plateau fairy
shrimp
Fed:

CA:

MSHCP:
none
none
COV
Occurs in cool-water vernal pools
that are formed from Southern
Basalt Flows.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Rhaphiomidas
terminatus
abdominalis
Delhi Sands flowerloving fly
Fed:

CA:

MSHCP:

END
none
COV
Dune habitat, with fine sandy
Delhi soils.

Presumed Absent. No
suitable habitat is present on
the Project Site, and the
Project Site is outside the
known range for the species.

Streptocephalus
woottoni
Riverside fairy shrimp
Fed:

CA:

MSHCP:

END
none
COV
Occurs in vernal pools, tectonic
swales, and earth slump basins in
western Riverside, Orange, and
San Diego counties in grassland
and coastal sage scrub.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Fishes
Catostomus
santaanae
Santa Ana sucker
Fed:

CA:

MSHCP:

THR
none
COV
Pools and runs of creeks and
small to medium rivers with cool,
shallow, clear, and unpolluted
water.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Gila orcutti
arroyo chub
Fed:

CA:

MSHCP:
none
SSC
COV
Creeks, streams, and rivers with
areas of slow-moving water with
sand or mud bottoms. Ranges
from San Diego to San Luis
Obispo county. Requires deep
pools, ponds, or slough-like areas
and vegetation for spawning.

Presumed Absent. No
suitable is present on the
Project Site or 500-foot buffer.

Oncorhynchus mykiss
irideus pop. 10
steelhead – southern
California DPS
Fed:

CA:

MSHCP:

END
CAN
none
Typically occurs in slow water
steams or rivers.

Presumed Absent. No
suitable habitat is present on
the Project Site.

Rhinichthys osculus
ssp. 8
Fed:

CA:

MSHCP:
none
SSC
none
Permanent flowing creeks and
streams with shallow gravel and
cobble riffles.

Presumed Absent. No
suitable habitat is present on
Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-3 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Santa Ana speckled
dace
the Project Site or 500-foot
buffer.

Amphibians
Anaxyrus californicus
arroyo toad
Fed:

CA:

MSHCP:

END
SSC
COV
Sandy banks of rivers, arroyos,
and streams with shallow sandy
pools. Also found in riparian
woodlands or uplands adjacent to
arroyos.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Rana draytonii
California red-legged
frog
Fed:

CA:

MSHCP:

THR
SSC
COV
Found near water features such as
ponds or streams in humid
forests, grasslands, coastal scrub,
and woodlands.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Rana muscosa
southern mountain
yellow-legged frog
Fed:

CA:

MSHCP:

END
END
COV
Ponds, streams, lakes, and
isolated pools in southern Sierra
Nevada Mountains and rocky
streams within narrow canyons
and the chapparral belt in
Southern California mountains.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Spea hammondii
western spadefoot
Fed:

CA:

MSHCP:

PT
SSC
COV
Open areas with sandy soils in a
wide range of habitats including
lowlands to foothills, coastal sage
scrub, chaparral, mixed
woodlands, sandy washes, river
floodplains, alluvial fans, playas,
and grasslands. Vernal pools are
essential for breeding and egglaying. The species is almost completely terrestrial, entering
water only to breed.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Taricha torosa
coast range newt
Fed:

CA:

MSHCP:
none
SSC
COV
Mesic upland areas including
grasslands, forests, and
woodlands. Burrows in soil or
wood debris.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Reptiles
Anniella stebbinsi
(formerly A. pulchra)
San Diegan legless
lizard
Fed:

CA:

MSHCP:
none
SSC
none
Coastal sand dunes, and variety of
interior habitats including sandy
washes and alluvial fans. Occurs
in moist warm loose soil with
plant cover and sparsely
vegetated beach dunes, pine-oak
woodlands, desert scrub,
chaparral, and stream terraces
with sycamores, cottonwoods, or
oaks.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-4 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Arizona elegans
occidentalis
California glossy snake
Fed:

CA:

MSHCP:
none
SSC
none
Most common in desert habitats
but also found in arid scrub, rocky
washes, grasslands, low elevation
coastal scrub, valley-foothill
hardwood, and chaparral. Prefers
washes and sandy areas with
patchy brush and rocks. Perennial
plants necessary in habitat for
food source.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Aspidoscelis tigris
stejnegeri
coastal whiptail
Fed:

CA:

MSHCP:
none
SSC
COV
Arid habitats including chaparral,
woodlands, and dry riparian
areas.

Presumed Absent. No
suitable habitat is present on
the Project Site.

Charina umbratica
southern rubber boa
Fed:

CA:

MSHCP:
none
THR
COV
Under rocks, woody debris, or in
crevices in conifer or conifermixed semi-open forests and woodlands, patchy
chaparral/shrublands, and
meadows.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Coleonyx variegatus
abbotti
San Diego banded
gecko
Fed:

CA:

MSHCP:
none
SSC
COV
Rocky areas in coastal sage scrub
and chaparral.

Presumed Absent. No
suitable habitat was Present
within the Project Site or 500-
foot buffer.

Crotalus ruber
red-diamond
rattlesnake
Fed:

CA:

MSHCP:
none
SSC
COV
Found in coastal chaparral, arid
scrub, rocky grassland, oak and
pine woodlands, desert mountain
slopes and rocky desert flats. Diet
consists of birds, lizards, and
small mammals including ground
squirrels, wood rats, and rabbits.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Emys marmorata
[Actinemys pallida]
western pond turtle
Fed:

CA:

MSHCP:

PT
SSC
COV
Occurs in aquatic, artificial flowing
waters, south coast flowing
waters, south coast standing
waters, and wetland habitats.

Needs basking sites (logs, rocks,
and exposed banks) and suitable
(sandy banks or grassy open
fields) upland habitat up to 0.5
km from water for egg-laying.

Presumed Absent. No
suitable habitat is present
within the Project Site or 500-
foot buffer.

Lampropeltis zonata
(parvirubra)
California mountain
kingsnake
(San Bernardino
population)
Fed:

CA:

MSHCP:
none
none
COV
Sun-exposed areas with woody
debris and rocky outcrops in
coastal sage scrub, chaparral,
manzanita, riparian woodlands,
oak-pine woodlands, and confier
forests. Occurs in the mountains
of Southern California including
San Bernardino, San Jacinto, and
San Gabriel.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-5 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Lampropeltis zonata
(pulchra)
California mountain
kingsnake
(San Diego population)
Fed:

CA:

MSHCP:
none
none
COV
Sun-exposed areas with woody
debris and rocky outcrops in
coastal sage scrub, chaparral,
manzanita, riparian woodlands,
oak-pine woodlands, and confier
forests. Occurs in the Santa Ana
and Santa Monica mountains,
Hollywood Hills, and central San
Diego County peninsular ranges.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Phrynosoma blainvillii
Blainville’s horned lizard
Fed:

CA:

MSHCP:
none
SSC
COV
Occurs in chaparral, cismontane
woodland, coastal bluff scrub,
coastal scrub, desert wash, pinon
& juniper woodlands, riparian
scrub, riparian woodland, and
valley & foothill grassland
habitats. As well as open areas of
valleys, foothills & semiarid
mountains. Requires open areas
for sunning, bushes to provide
cover, and loose soil for burial.

Diet consists mainly of ants and
also small invertebrates. Most
commonly found in lowlands
along sandy washes with
scattered low bushes.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Salvadora hexalepis
virgultea
coast patch-nosed
snake
Fed:

CA:

MSHCP:
none
SSC
none
Coastal scrub and semi-arid
brushy areas and chaparral in
canyons, rocky hillsides, and
plains. Brushy or shrubby
vegetation in coastal Southern
California. Require small mammal
burrows for refuge and
overwintering sites. Diet consists
mostly of lizards, along with small
mammals.

Presumed Absent. No
suitable habitat or small
burrows are present on the
Project Site or 500-foot buffer.

Sceloporus graciosus
vandenburgianus
southern sagebrush
lizard
Fed:

CA:

MSHCP:
none
none
COV
Occurs in shrublands like
chaparral, manzanita, ceanothus,
open pine, and Douglas Fir
forests within the mountains.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Thamnophis
hammondii
two-striped gartersnake
Fed:

CA:

MSHCP:
none
SSC
none
Occur along aquatic habitats such
as pools, creeks, and riparian
areas usually near chaparral, rocky
areas, brushland, oak woodland,
and conifer forests. Found in
Presumed Absent. No
suitable habitat was present
within the Project Site or 500-
foot buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-6 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence coastal California from vicinity of
Salinas to northwest Baja
California. From sea to about
7,000 ft elevation. Hunts in water.

Birds
Accipiter gentilis
northern goshawk
(nesting)
Fed:

CA:

MSHCP:
none
SSC
COV
Nesting occurs in mature, oldgrowth forests with more than 60% closed canopy; breeding has
been documented within San
Bernardino Mountains and San
Jacinto Mountains between 6,560
and 8,860 feet. Often found
nesting in ponderosa pines and
near gaps in the canopy. Prefer
nesting sites near a source of
water. Foraging occurs in forests,
along riparian corridors, and in
open habitat such as sagebrush
steppes.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Agelaius tricolor
tricolored blackbird
(nesting colony)
Fed:

CA:

MSHCP:
none

THR/SSC
COV
Occurs in freshwater marsh with
marshes with dense cattails,
bulrushes, sedges, and tule,
swamp, and wetland habitats.

Largely endemic to California.

Highly colonial species, most
numerous in Central Valley &
vicinity. Requires open water,
protected nesting substrate, and
foraging area with insect prey
within a few kilometers of the
colony. Forages in open habitat
such as cultivated fields and
pastures.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Ammodramus
savannarum
grasshopper sparrow
Fed:

CA:

MSHCP:
none
SSC
COV
Grasslands and prairies of
moderate height with clusters of
scattered shrubs among patches
of bare ground.

Presumed Absent. No suitable
grassland or prairie habitat is
present within the Project Site
or 500-foot buffer. The
disturbed lot along Lincoln
Avenue was unsuitable due to
the high level of disturbance
including a prevalence of lowgrowing nonnative species and evidence of ground
disturbance (i.e., tilling).

Asio otus
long-eared owl
Fed:

CA:

MSHCP:
none
SSC
none
Occurs in cismontane woodland,
Great Basin scrub, riparian forest,
riparian woodland, upper
Presumed Absent. No
suitable habitat is present
Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-7 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence montane coniferous forest, and
dense deciduous and evergreen
forests habitats near water. Found
in riparian bottomlands within tall
willows and cottonwoods. Also
found in belts of live oak
paralleling stream courses.

Require adjacent open land,
productive of mice and the
presence of old nests of crows,
hawks, or magpies for breeding.
within the Project Site or 500-
foot buffer.

Athene cunicularia
burrowing owl
(burrow & some
wintering sites)
Fed:

CA:

MSHCP:
none
SSC
COV
Open, dry annual or perennial
grasslands, deserts, plains, and
scrublands characterized by lowgrowing vegetation. Occurs in coastal prairie, coastal scrub,
Great Basin grassland, Great Basin
scrub, Mojavean desert scrub,
Sonoran desert scrub, and valley
& foothill grassland habitats.

Subterranean nester, dependent
upon burrowing mammals, most
notably, the California ground
squirrel. Also found in vacant lots
and airports.

Presumed Absent. No
suitable habitat is present on
the Project Site. The disturbed
lot, which was surrounded by
development, was unsuitable
for this species and would not
support wintering or breeding
activities due to the lack of
habitat and insufficient small
mammals to provide shelter
sites and prey. In addition to
the lack of habitat, the small
size of the disturbed lot and
urban setting likely precludes
the species from occurring in
the Project Site and buffer.

Aquila chrysaetos
golden eagle
(nesting & wintering)
Fed:

CA:

MSHCP:

PRO
FP
COV
Occurs in open and semi-open
habitats such as grasslands,
prairies, sagebrush, savannah or
sparse woodlands, and barren
hills or mountainous areas. This
species typically avoids
developed areas and stretches of
thick forests. Found primarily in
mountainous areas up to 12,000
feet in elevation. Nesting occurs
on cliff edges or in large trees
such as Eucalyptus or oak in
grassland, chaparral, shrubland,
forest, and other vegetated areas.

Presumed Absent. No
suitable nesting or wintering
habitat is present within the
Project Site. Trees in the
Project Site and buffer were
not large enough to provide
suitable nesting habitat.

Additionally, the location of
the Project Site in a
urban/developed setting likely
precludes the species from
nesting or foraging in the
Project Site and buffer.

Buteo swainsoni
Swainson’s hawk
(nesting)
Fed:

CA:

MSHCP:
none
THR
COV
Occurs in Great Basin grassland,
riparian forest, riparian woodland,
open pine-oak woodland,
savannah, agricultural fields, and
valley & foothill grassland
habitats. Breeds in grasslands
with scattered trees, juniper-sage
flats, riparian areas, savannahs, &
Presumed Absent. The Project
Site is just outside of the
current known breeding range
for this species. Although oaks
and cottonwoods were
mapped in the buffer and
Project Site, no suitable
foraging habitat, in the form of
Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-8 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence agricultural or ranch lands with
groves or lines of trees. Nests in
solitary bush or tree, or in small
groves. Nesting trees can include
willow, black locust, oak, aspen,
cottonwood, and conifers.

Requires adjacent suitable
foraging areas such as grasslands
or alfalfa/grain fields supporting
rodent populations.
grasslands or alfalfa/grain
fields, was present within the
Project Site or buffer.

Charadrius montanus
mountain plover
(wintering)
Fed:

CA:

MSHCP:
none
SSC
COV
Nesting occurs in shortgrass
prairie with blue grama, buffalo
grass, and western wheat grass
being the dominant species; or in
grassy semidesert habitats with
saltbush, sage, prickly pear, and
yucca. Utilize playas and vernal
pool, grassland, and some
agriculture habitats during the
winter within western Riverside
County.

Presumed Absent. No
suitable wintering habitat is
present on the Project Site or
500-foot buffer.

Charadrius nivosus
nivosus
western snowy plover
(nesting)
Fed:

CA:

MSHCP:

THR
SSC
none
Sandy beaches, salt pond levees
& shores of large alkali lakes.

Needs sandy, gravelly or friable
soils for nesting. Known protected
population in the Tiajuana
Estuary.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Coccyzus americanus
occidentalis
western yellow-billed
cuckoo
(nesting)
Fed:

CA:

MSHCP:

THR
END
COV
Occurs in riparian forest habitat.

Nests along broad (≥ 5 hectares)
patches of multi-layered riparian
woodland, often dominated by
willows and cottonwoods of lower
flood bottoms of larger river
systems.

Presumed Absent. No
suitable habitat was present
within the Project Site or 500-
foot buffer.

Coturnicops
noveboracensis
yellow rail
Fed:

CA:

MSHCP:
none
SSC
none
Occurs in grassy freshwater
marshlands and meadows. Not
found in deeper areas with tall
vegetation, such as cattail
marshes.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Cypseloides niger
black swift
(nesting)
Fed:

CA:

MSHCP:
none
SSC
COV
Open sky over mountains, forests,
or coastal cliffs. Nests in crevices
or ledges of steep cliffs near
streams or mountainous
waterfalls or along the coast.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-9 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Elanus leucurus
white-tailed kite
(nesting)
Fed:

CA:

MSHCP:
none
FP
COV
Open habitat in lowlands
including savanna, open
woodlands, marshes, and
agricultural fields. Nests in trees,
riparian scrub areas, oak
woodlands, and other similar
habitats.

Presumed Absent. No
suitable is present on the
Project Site or 500-foot buffer.

Empidonax traillii
extimus
southwestern willow
flycatcher
(nesting)
Fed:

CA:

MSHCP:

END
END
COV
Occurs in riparian woodland,
particularly with willow thickets,
habitat in Southern California.

Nests in densest areas of riparian
tree and shrub communities, and
trees with low-density canopies
associated with rivers, swamps,
and other wetlands, including
lakes and reservoirs. Nests are
often in nonnative tamarisk
(Tamarisk spp.) and native willow
(Salix spp.), typically in vegetation
stands of 4-7 m in height.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Haliaeetus
leucocephalus
bald eagle
(nesting & wintering)
Fed:

CA:

MSHCP:

DL/PRO
END/FP
COV
General habitat includes Forested
areas, and sometimes dry open
uplands, along the coast or near
large open bodies of water
including lakes. Breeding habitat
most commonly includes areas
close to coastal areas, bays, rivers,
lakes, reservoirs, or other bodies
of water that reflect the general
availability of primary food
sources including fish, waterfowl,
or seabirds. Nests in tall trees or
on cliffs or pinnacles near open
water.

Presumed Absent. No
suitable habitat was present
within the Project Site or 500-
foot buffer.

Icteria virens
yellow-breasted chat
(nesting)
Fed:

CA:

MSHCP:
none
SSC
COV
Occurs in riparian forest, riparian
scrub, and riparian woodland
habitats. Nests in low, dense
riparian, consisting of willow,
blackberry, wild grape along
streams or at the edges of ponds
or swamps. Forages and nests
within 10 ft of ground.

Presumed Absent. No
suitable habitat was present
within the Project Site or 500-
foot buffer.

Lanius ludovicianus
loggerhead shrike
(nesting)
Fed:

CA:

MSHCP:
none
SSC
COV
Open country, with scattered
shrubs and trees or other perches
for hunting; includes agricultural
fields, deserts, grasslands,
savanna, and chaparral.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-10 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Laterallus jamaicensis
coturniculus
California black rail
Fed:

CA:

MSHCP:
none

THR, FP
none
Occurs in wetland, marsh, wet
meadows, and swamp habitats
with flat shorelines. Also, occurs
in coastal and estuarine
saltmarshes especially dominated
by pickleweed and matted salt
grass. Needs water depths of
about 1 inch that do not fluctuate
during the year and dense
vegetation for nesting habitat.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Melospiza lincolnii
Lincoln’s sparrow
Fed:

CA:

MSHCP:
none
none
COV
Winter visitor to lowland of
Southern California and a rare
breeder in higher elevations
(4,000-9,000 feet) of San Gabriel,
San Bernardino, and San Jacinto
Mountains. Breeds in lush and
brushy montane wet meadows
with corn lilies or small willows.

Wintering and migratory areas
include lowland shrub and scrub
habitats (chaparral, coastal sage
scrub, grassland, freshwater
marsh, peninsular juniper
woodland, riparian scrub, oak
woodland and forest, and
Riversidean alluvial fan sage
scrub).

Moderate - wintering /
Presumed Absent - nesting.

Marginal suitable wintering
and foraging habitat is present
in the disturbed lot and
ornamental vegetation in the
urban/landscaped areas within
the Project Site and buffer. No
suitable nesting habitat is
present on the Project Site.

Multiple recent records were
identified within 5 miles of the
Project site in eBird and the
Western Riverside County
Biological Monitoring Program
(WRCBMP). The closest
WRCBMP record was
documented in November
2019 approximately 3 miles
northwest of the Project Site.

The closest eBird records were
multiple occurrences on April
2021 at the Skyline Drive
Trailhead, approximately 1 mile
southeast of the Project Site
and multiple observations
from December 2021 and
November 2020 at Mountain
Gate Park approximately 1 mile
south of the Project Site. No
CNDDB records were identified
during the database search.

Polioptila californica
californica
coastal California
gnatcatcher
Fed:

CA:

MSHCP:

THR
SSC
COV
Dry coastal slopes, washes, and
mesas with areas of low
vegetation and coastal sage scrub
including California sagebrush,
California buckwheat, salvia, and
prickly pear cactus. Moves about
actively in shrubs and low trees to
Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-11 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence forage. Generally found at
elevations below 3,000 ft.

Progne subis
purple martin
(nesting)
Fed:

CA:

MSHCP:
none
SSC
COV
Open and semi-open country
near water, includes urban areas
and agricultural lands. Nests in
tree cavities and sometimes rock
crevices.

Presumed Absent. No
suitable nesting habitat is
present on the Project Site or
500-foot buffer.

Setophaga petechia*
yellow warbler
(nesting)
*formerly Dendroica
petechia brewsteri
Fed:

CA:

MSHCP:
none
SSC
COV
In southern California, this species
breeds in lowland and foothill
riparian woodlands dominated by
cottonwoods, alders, or willows
and other small trees and shrubs
typical of low, open-canopy
riparian woodland. During
migration, they occur in lowland
and foothill woodland habitats
such as desert oases, riparian
woodlands, oak woodlands,
mixed deciduous-coniferous
woodlands, suburban and urban
gardens and parks, groves of
exotic trees, farmyard windbreaks,
and orchards (Small 1994).

Frequently found nesting and
foraging in willow shrubs and
thickets, and in other riparian
plants including cottonwoods,
sycamores, ash, and alders. Diet
consists primarily of insects.

Presumed Absent. No
suitable nesting habitat is
present on the Project Site or
500-foot buffer.

Sphyrapicus
thyroideus
Williamson’s sapsucker
Fed:

CA:

MSHCP:
none
none
COV
Nesting occurs in coniferous and
mixed conifer-deciduous forests.

Common tree species used
include Douglas fir, white fir,
ponderosa pine, lodgepole pine,
and Jeffrey pine, typically found
between 4,920 and 10,500 ft amsl,
with breeding generally occurring
above 5,200 feet. During winter,
uses lowland woodlands and
forests especially with conifers.

Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Strix occidentalis
occidentalis
California spotted owl
Fed:

CA:

MSHCP:
none
SSC
COV
Occurs in mixed montane
evergreen and coniferous forests
and montane oak woodlands.

Uses mature forests with a
canopy characterized as dense,
multi-layered, diverse, and with a
high closure. Often prefers black
oaks in the understory. Nesting
Presumed Absent. No
suitable nesting or foraging
habitat is present on the
Project Site or 500-foot buffer.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-12 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence occurs in well-shaded, steep and
narrow canyons often with
canyon live oaks.

Vireo bellii pusillus
least Bell's vireo
(nesting)
Fed:

CA:

MSHCP:

END
END
COV
Occurs in dense riparian forest,
riparian scrub, and riparian
woodland habitats between 2,000
feet and 4,270 feet. Summer
resident of Southern California in
low riparian vegetation in the
vicinity of water or in dry river
bottoms, below 2,000 ft. Breeds in
low riparian vegetation with a
dense understory and stratified
canopy along water or dry
intermittent streams often
composed of southern willow
scrub, cottonwood forest, mule
fat scrub, alluvial woodland, coast
live oak riparian forest, and
arroyo willow riparian forest.

Nests placed along margins of
bushes or on twigs projecting
into pathways, usually willow,
mule fat, and mesquite. Forages
in adjacent upland habitats.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Mammals
Antrozous pallidus
pallid bat
Fed:

CA:

MSHCP:
none
SSC
none
Occurs in mountainous areas
chaparral, coastal scrub, desert
wash, Great Basin grassland,
Great Basin scrub, Mojavean
desert scrub, riparian woodland,
Sonoran desert scrub, upper
montane coniferous forest, valley
& foothill grassland, and arid
grassland habitats near water,
rocky outcrops and open
woodlands. Most commonly
found in open, dry habitats with
rocky areas for roosting.

Frequently roosts in rock crevices,
caves, mines, buildings, bridges,
and in live trees and snags that
have holes and cavities or
crevices formed by exfoliating
bark. Very sensitive to
disturbance of roosting sites.

Low. Suitable roosting habitat
was present in the Project Site
and 500-foot buffer in the
form of residential buildings,
crevices in the concrete box
channel underneath Ontario
Avenue. Two CNDDB records
were identified during the
literature review; however,
both (Occ #16 and 47) are
historic and documented more
than 5 miles from the Project
Site. The closest record (Occ
#16) was an observation from
1993 of an individual foraging
in Blind Canyon, located
approximately 7.3 miles
southwest of the Project Site.

Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-13 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence Chaetodipus fallax
fallax
northwestern San Diego
pocket mouse
Fed:

CA:

MSHCP:
none
SSC
COV
Coastal scrub, chaparral,
sagebrush, and grasslands in
western San Diego county.

Presumed Absent. No
suitable habitat is present on
the Project Site or within the
500-foot buffer.

Dipodomys merriami
parvus
San Bernardino
kangaroo rat
Fed:

CA:

MSHCP:

END

END, SSC
COV
Gentle slopes of alluvial fans,
alluvial sage scrub, on flood
plains, along washes, and on
adjacent upland areas with soils
containing sand, loam, and gravel
deposited by rivers and streams.

Can also be found in sandy soils
that are wind deposited. Found in
alluvial sage scrub, coastal sage
scrub, and chaparral vegetation.

Presumed Absent. No
suitable is present on the
Project Site or within the 500-
foot buffer.

Dipodomys stephensi
Stephens' kangaroo rat
Fed:

CA:

MSHCP:

THR
THR
COV
Annual grasslands, coastal sage
scrub with sparsely spaced
vegetation, loose friable soils, and
flat or slightly rolling terrain.

Prefer open habitats with less
than 50% protective cover.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Eumops perotis
californicus
western mastiff bat
Fed:

CA:

MSHCP:
none
SSC
none
Roosts high above ground in rock
and cliff crevices, shallow caves,
and rarely in buildings. Occurs in
arid and semiarid regions
including rocky canyon habitats.

Low. Limited suitable roosting
habitat was present within the
Project Site and 500-foot
buffer in buildings. Multiple
CNDDB occurrences were
identified; however, none were
recent or within 5 miles. The
closest record (Occ# 211) was
documented in 1997
approximately 5.3 miles east of
the Project Site.

Glaucomys sabrinus
californicus
San Bernardino flying
squirrel
Fed:

CA:

MSHCP:
none
SSC
COV
Occur in broadleaved upland
forest and lower montane
coniferous forest
Presumed Absent. No
suitable is present on the
Project Site or within the 500-
foot buffer.

Lasiurus xanthinus
western yellow bat
Fed:

CA:

MSHCP:
none
SSC
none
Found in valley foothill riparian,
riparian woodland in arid regions,
desert riparian, desert wash, and
palm oasis habitats, oak or
pinyon-juniper woodlands, and
human developed areas. Roosts
in trees, particularly palms with
intact dead frond skirts. Has also
been found roosting in
Low. Limited suitable foraging
and roosting habitat was
present within the Project Site
and 500-foot buffer in the
form of California and Mexican
fan palm trees. Three CNDDB
occurrences were identified;
however, all were historical.

The closest and most record
was of two specimen
Appendix B – Wildlife Potential for Occurrence
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
B-14 February 2024
2023-213
Scientific Name
Common Name Status Habitat Requirements Potential for Occurrence cottonwood trees. Forages over
water and among trees.
collections from 1999 and
located approximately 0.3 mile
north of the Project Site.

Nyctinomops
femorosaccus
pocketed free-tailed bat
Fed:

CA:

MSHCP:
none
SSC
none
Roosts in crevices of outcrops and
cliffs, shallow caves, and
buildings. Found along rugged
canyons, high cliffs, and semiarid
rock outcroppings.

Low. Limited suitable roosting
habitat was present within
buildings in the Project Site
and 500-foot buffer. Multiple
CNDDB occurrences were
identified; however, all were
historic. The closest record
(Occ# 18) was documented in
1986 approximately 0.3 mile
east of the Project Site.

Onychomys torridus
ramona
southern grasshopper
mouse
Fed:

CA:

MSHCP:
none
SSC
none
Low, semi-open, and open scrub
habitats with flat, sandy valley
floors. Habitats include coastal
and mixed chaparral, coastal sage
scrub, riparian scrub, low
sagebrush, and grasslands with
interspaced shrubs.

Presumed Absent. No
suitable is present on the
Project Site or the 500-foot
buffer.

Perognathus
longimembris
brevinasus
Los Angeles pocket
mouse
Fed:

CA:

MSHCP:
none
SSC
COV
Habitats with sandy and fine soils,
including grasslands, coastal sage
scrub, and alluvial sage scrub.

Presumed Absent. No
suitable habitat is present on
the Project Site or 500-foot
buffer.

Status Codes:

Federal Designations:
(Federal Endangered Species Act, U.S.

Fish and Wildlife Service)
END: Federally-listed, Endangered
THR: Federally-listed, Threatened
PT: Federally Proposed Threatened
FC: Federal Candidate Species
DL: Federally-delisted
PRO: Bald and Golden Eagle Protection
Act
State Designations:
(California Endangered Species Act,
CDFW)
END: State-listed, Endangered
THR: State-listed, Threatened
CAN: Candidate for state listing
SSC: Species of Special Concern
FP: Fully Protected Species
Other Designations
COV: Covered species under
the Western Riverside MSHCP
Source: California Natural Diversity Data Base (CNDDB) Riverside West, Prado Dam, Santiago Peak, El Toro, Alberhill, Black Star Canyon, Corona South, Lake Mathews, and Corona North 7.5-minute quads.

APPENDIX C
Representative Site Photographs
Appendix C – Representative Site Photographs
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
C-1 February 2024
2023-213
Photo 1: Developed residential area north of and along West Ontario Avenue and west of Taylor Avenue, facing southwest.

Photo 2: Developed residential area south of and along West Ontario Avenue and between Oak Avenue and South Lincoln Avenue; facing southeast.

Appendix C – Representative Site Photographs
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
C-2 February 2024
2023-213
Photo 3: Developed residential area between South Lincoln Avenue and Glenhaven Drive, and south of West Ontario Avenue, facing west.

Photo 4: Ornamental trees at Ontario Park in developed residential area within the 500-foot buffer north of the Project Site; facing east.

Appendix C – Representative Site Photographs
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
C-3 February 2024
2023-213
Photo 5: Disturbed lot, with evidence of tilling, located east of South Lincoln Avenue; facing north.

Photo 6: Large ornamental trees in residential development located within the Project Site, near APN 113140025, and located south of West Ontario Avenue; facing south.

Appendix C – Representative Site Photographs
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
C-4 February 2024
2023-213
Photo 7: California fan palm with dead frond skirt located in Project Site, south of West Ontario Avenue, near APNs 113140006 and 113140008, and between South Lincoln Avenue and Glenhaven Drive, facing south.

Photo 8: Mexican fan palms with minimal dead frond skirts located within Project Site, south of West Ontario Avenue near APN 113140005 and between South Lincoln Avenue and Glenhaven Drive, facing south.

Appendix C – Representative Site Photographs
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
C-5 February 2024
2023-213
Photo 9: Fan palm with dead frond skirt located adjacent to the Project Site, south of West Ontario Avenue and west of South Buena Vista Avenue, facing north.

Photo 10: Mexican fan palms with large dead frond skirts located north of the Project Site in the 500-foot buffer between Conejo Street and South Beuna Vista Avenue, facing north.

Appendix C – Representative Site Photographs
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
C-6 February 2024
2023-213
Photo 11: Concrete box culvert in concrete-lined drainage channel located within the Project Site, under West Ontario Avenue and west of Oak Avenue, facing south.

Photo 12: Concrete-lined drainage channel that intersects the Project site, under West Ontario Avenue and west of Oak Avenue, facing north.

APPENDIX D
Plant Species Observed
Appendix D – List of Plant Species Observed
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
D-1 February 2024
2023-213

SCEINTIFIC NAME COMMON NAME

VASCULAR PLANTS

GYMNOSPERMS
Cupressaceae Cypress Family
Cupressus sempervirens* Italian cypress
Cycadaceae Cycad Family
Cycas revoluta* Sago palm
Pinaceae Pine Family
Pinus halepensis* Aleppo pine
Podocarpacaceae Plumpine Family
Podocarpus sp.* Plum pine

ANGIOSPERMS (EUDICOTS)
Aceraceae Maple Family
Acer palmatum* Japanese maple
Aizoaceae Ice plant Family
Carpobrotus edulis* Iceplant
Amaranthaceae Amaranth Family
Amaranthus albus* Prostrate pigweed
Anacardiaceae Cashew Family
Schinus mole* Peruvian peppertree
Apocynaceae Dogbane Family
Plumeria rubra* Plumeria
Araliaceae Ginseng Family
Hedera canariensis* Canary island ivy
Hedera helix* English ivy
Arecaceae Palm Family
Syagrus romanzoffiana* Queen palm
Asteraceae Sunflower Family
Lactuca serriola* Prickly lettuce
Betulaceae Birch Family
Alnus rhombifolia White alder
Bignoniaceae Trumpet vine Family
Chilopsis linearis x Catalpa bignonioides1*. Chitalpa1.

Jacaranda mimosifolia* Blue jacaranda
Tecoma capensis* Cape honeysuckle
Tecoma stans* Yellow trumpet bush
Bombaceae Silk-floss tree Family
Chlorisia speciosa* Silk-floss tree
Appendix D – List of Plant Species Observed
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
D-2 February 2024
2023-213

SCEINTIFIC NAME COMMON NAME
Brassicaceae Mustard Family
Brassica sp.* Mustard
Raphanus raphanistrum* Wild radish
Sisymbrium irio* London rocket
Chenopodiaceae Goosefoot Family
Atriplex semibaccata* Australian saltbush
Chenopodium album* Common lambs quarters
Salsola tragus* Russian thistle
Convolvulaceae Morning Glory Family
Convolvulus arvensis* Field bindweed
Crassulaceae Stonecrop Family
Crassula ovata* Jade plant
Euphorbiaceae Spurge Family
Euphorbia tirucalli* Firestick
Ricinus communis* Castor bean
Fagaceae Oak Famiy
Quercus agrifolia Coast live oak
Quercus sp. Oak
Fabaceae Pea Famiy
Bauhinia purpurea* Orchid tree
Geraniaceae Geranium Family
Erodium cicutarium* Redstem filaree
Pelargonium sp.* Geranium
Hamamelidaceae Witch-hazel Family
Liquidambar styraciflua* Sweetgum
Lamiaceae Mint Family
Rosmarinus officinalis* Rosemary
Salvia leucantha* Mexican sage
Westringia fruticosa* Coastal rosemary
Lauraceae Laurel Family
Cinnamomum camphora* Camphor tree
Magnoliaceae Magnolia Family
Magnolia sp.* Magnolia
Malvaceae Mallow Family
Hibiscus rosa sinensis* Chinese hibiscus
Malva parviflora* Cheeseweed mallow
Appendix D – List of Plant Species Observed
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
D-3 February 2024
2023-213

SCEINTIFIC NAME COMMON NAME
Moraceae Mulberry Family
Ficus benjamina* Weeping fig
Ficus carica* Common fig
Myrtaceae Myrtle Family
Agonis flexuosa* Australian peppermint willow
Callistemon citrinus* Crimson bottlebrush
Eucalyptus sideroxylon* Red ironbark eucalyptus
Nyctaginaceae Four o’clock Family
Agonis flexuosa* Australian peppermint willow
Oleaceae Olive Family
Fraxinus sp. Ash
Olea europaea* Common olive
Platanaceae Plane-tree Family
Platanus occidentalis* American sycamore
Plantaginaceae Plantain Family
Plantago major* Broadleaf plantain
Plumbaginaceae Plumbago Family
Plumbago capensis* Cape plumbago
Portulacaceae Purslane Family
Portulacaria afra* Elephant bush
Rosaceae Rose Family
Heteromeles arbutifolia Toyon
Pyrus calleryana* Bradford pear
Rhaphiolepis indica* Indian hawthorn
Rutaceae Rue Family
Citrus sp.* Citrus
Citrus x tangerina Tangerine
Salicaceae Willow Family
Populus fremontii Fremont’s cottonwood
Sapindaceae Lychee Family
Cupaniopsis anacardioides* Carrotwood
Koelreuteria bipinnata* Chinese flametree
Scrophulariaceae Figwort Family
Myoporum parvifolium* Creeping myoporum
Solanaceae Nightshade Family
Solanum elaeagnifolium* Silverleaf nightshade
Sterculiaceae Peon Family
Brachychiton populneus* Australian bottle tree
Appendix D – List of Plant Species Observed
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
D-4 February 2024
2023-213

SCEINTIFIC NAME COMMON NAME
Ulmaceae Elm Family
Ulmus parvifolia* Chinese elm

ANGIOSPERMS (MONOCOTS)
Alliaceae Onion Family
Tulbaghia violacea* Society garlic
Arecaceae Palm Family
Syagrus romanzoffiana* Queen palm
Washingtonia filifera California fan palm
Washingtonia robusta* Mexican fan palm
Asparagaceae Asparagus Family
Agave americana* Century plant
Agave attenuata* Foxtail agave
Dracaena marginata* Dragon tree
Yucca aloifolia* Aloe yucca
Asphodelaceae Aloe Family
Dianella sp.* Flax lily
Iridaceae Iris Family
Dietes iridioides* African iris
Poaceae Grass Family
Avena sp.* Wild oat
Bromus diandrus* Ripgut brome
Cynodon dactylon* Bermuda grass
Festuca sp.* Lawn grass
Strelitziaceae Bird of Paradise Family
Strelitzia nicolai* Giant white bird of paradise
*Nonnative species

1. This is a horticultural hybrid between native Chilopsis linearis, Desert willow, and other Bignoniaceae species Caltalpa bignonioides, Southern catalpa, and doesn’t naturally occur in the wild.

APPENDIX E
Wildlife Species Observed
Appendix E – List of Wildlife Species Observed
ECORP Consulting, Inc.

Ontario Avenue Widening at Lincoln Avenue Project
E-1 February 2024
2023-213

SCIENTIFIC NAME COMMON NAME

AVES BIRDS
Aegithalidae Bushtits
Psaltriparus minimus Bushtit
Columbidae Pigeons and Doves
Patagioenas fasciata Band-tailed pigeon
Streptopelia decaocto* Eurasian collared-dove
Zenaida macroura Mourning dove
Corvidae Jays and Crows
Corvus brachyrhynchos American crow
Fringillidae Finches
Haemorhous mexicanus House finch
Spinus psaltria Lesser goldfinch
Mimidae Mockingbirds and Thrashers
Mimus polyglottos Northern mockingbird
Passerellidae New World Sparrows
Chondestes grammacus Lark sparrow
Regulidae Kinglets
Corthylio calendula Ruby-crowned kinglet
Sturnidae Starlings
Sturnus vulgaris* European starling
Trochilidae Hummingbirds
Calypte anna Anna’s hummingbird
Troglodytidae Wrens
Thryomanes bewickii Bewick’s wren
Tyrannidae Tyrant Flycatchers
Sayornis nigricans Black phoebe
Sayornis saya Say’s phoebe

MAMMALIA MAMMALS
Geomyidae Pocket Gophers
Thomomys sp. pocket gopher species
*Nonnative species

ADDENDUM TO THE CORONA GENERAL PLAN TECHNICAL UPDATE EIR FOR THE WEST ONTARIO AVENUE WIDENING

PROJECT

CITY OF CORONA
Appendix